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Comparing Coro/Coro/State.xs (file contents):
Revision 1.226 by root, Fri Apr 4 20:07:35 2008 UTC vs.
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 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
77/* 5.8.8 */ 93/* 5.8.8 */
78#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
80#endif 96#endif
81#ifndef newSV 97#ifndef newSV
82# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
83#endif 99#endif
84 100
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.8.7 */ 101/* 5.8.7 */
91#ifndef SvRV_set 102#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
93#endif 104#endif
94 105
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 117#endif
107 118
108/* 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
109 * portable way as possible. */ 120 * portable way as possible. */
110#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
111#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
112 126
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 128
115#if __GNUC__ >= 3 129#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
119#else 133#else
120# define attribute(x) 134# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
123#endif 137#endif
124 138
125#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
127 141
128#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
129 143
130#include "CoroAPI.h" 144#include "CoroAPI.h"
131 145
132#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 147# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 150#endif
140 151
141/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
142struct io_state 153struct io_state
143{ 154{
155 AV *res;
144 int errorno; 156 int errorno;
145 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
146 int laststatval; 158 int laststatval;
147 Stat_t statcache; 159 Stat_t statcache;
148}; 160};
149 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 168static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
156 171
157static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 174static SV *rv_diehook;
160static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
162 177
163/* async_pool helper stuff */ 178/* async_pool helper stuff */
164static SV *sv_pool_rss; 179static SV *sv_pool_rss;
165static SV *sv_pool_size; 180static SV *sv_pool_size;
166static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
167 185
168static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
170 188
171enum { 189enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 196};
179 197
180/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 199typedef struct coro_cctx
200{
182 struct coro_cctx *next; 201 struct coro_cctx *next;
183 202
184 /* the stack */ 203 /* the stack */
185 void *sptr; 204 void *sptr;
186 size_t ssize; 205 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 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 */
191 JMPENV *top_env; 210 JMPENV *top_env;
192 coro_context cctx; 211 coro_context cctx;
193 212
213 U32 gen;
194#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
195 int valgrind_id; 215 int valgrind_id;
196#endif 216#endif
197 unsigned char flags; 217 unsigned char flags;
198} coro_cctx; 218} coro_cctx;
… …
203 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 225};
206 226
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 228typedef struct
229{
209 SV *defsv; 230 SV *defsv;
210 AV *defav; 231 AV *defav;
211 SV *errsv; 232 SV *errsv;
212 SV *irsgv; 233 SV *irsgv;
213#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
217 238
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 240
220/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
221struct coro { 242struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 244 coro_cctx *cctx;
224 245
225 /* process data */ 246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 248 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
228 250
229 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
233 256
234 /* statistics */ 257 /* statistics */
235 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
236 259
237 /* coro process data */ 260 /* coro process data */
… …
245 struct coro *next, *prev; 268 struct coro *next, *prev;
246}; 269};
247 270
248typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
250 275
251/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
252 277
253#define PRIO_MAX 3 278#define PRIO_MAX 3
254#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 282#define PRIO_IDLE -3
258#define PRIO_MIN -4 283#define PRIO_MIN -4
259 284
260/* for Coro.pm */ 285/* for Coro.pm */
261static SV *coro_current; 286static SV *coro_current;
287static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready;
264static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
265 291
266/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
267 293
268static SV * 294static SV *
269coro_get_sv (pTHX_ const char *name, int create) 295coro_get_sv (pTHX_ const char *name, int create)
270{ 296{
271#if PERL_VERSION_ATLEAST (5,9,0) 297#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 299 get_sv (name, create);
274#endif 300#endif
275 return get_sv (name, create); 301 return get_sv (name, create);
276} 302}
277 303
278static AV * 304static AV *
279coro_get_av (pTHX_ const char *name, int create) 305coro_get_av (pTHX_ const char *name, int create)
280{ 306{
281#if PERL_VERSION_ATLEAST (5,9,0) 307#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 309 get_av (name, create);
284#endif 310#endif
285 return get_av (name, create); 311 return get_av (name, create);
286} 312}
287 313
288static HV * 314static HV *
289coro_get_hv (pTHX_ const char *name, int create) 315coro_get_hv (pTHX_ const char *name, int create)
290{ 316{
291#if PERL_VERSION_ATLEAST (5,9,0) 317#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 319 get_hv (name, create);
294#endif 320#endif
295 return get_hv (name, create); 321 return get_hv (name, create);
296} 322}
… …
301 AV *padlist = CvPADLIST (cv); 327 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 328 AV *newpadlist, *newpad;
303 329
304 newpadlist = newAV (); 330 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 331 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 334#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 336#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 338 --AvFILLp (padlist);
313 339
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 341 av_store (newpadlist, 1, (SV *)newpad);
316 342
317 return newpadlist; 343 return newpadlist;
318} 344}
319 345
… …
349 375
350 /* casting is fun. */ 376 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 378 free_padlist (aTHX_ padlist);
353 379
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381
354 return 0; 382 return 0;
355} 383}
356 384
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 386#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
360static MGVTBL coro_cv_vtbl = { 388static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 389 0, 0, 0, 0,
362 coro_cv_free 390 coro_cv_free
363}; 391};
364 392
365#define CORO_MAGIC(sv,type) \ 393#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 394 expect_true (SvMAGIC (sv)) \
367 ? SvMAGIC (sv)->mg_type == type \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \ 396 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \ 397 : mg_find (sv, type) \
370 : 0 398 : 0
371 399
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374 402
375static struct coro * 403INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
377{ 405{
378 HV *stash; 406 HV *stash;
379 MAGIC *mg; 407 MAGIC *mg;
380 408
… …
395 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
397} 425}
398 426
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
400 441
401/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
402static void 443static void
403get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
404{ 445{
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 451 else
411 { 452 {
412#if CORO_PREFER_PERL_FUNCTIONS 453#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 454 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 456 CV *cp = Perl_cv_clone (cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 457 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 458 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 459 SvREFCNT_dec (cp);
418#else 460#else
… …
470 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
471 } 513 }
472 514
473 PUTBACK; 515 PUTBACK;
474 } 516 }
517
518 slf_frame = c->slf_frame;
475} 519}
476 520
477static void 521static void
478save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
479{ 523{
524 c->slf_frame = slf_frame;
525
480 { 526 {
481 dSP; 527 dSP;
482 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
502 548
503 if (expect_true (CvDEPTH (cv))) 549 if (expect_true (CvDEPTH (cv)))
504 { 550 {
505 EXTEND (SP, 3); 551 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
509 555
510 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
512 } 558 }
… …
551 #undef VAR 597 #undef VAR
552 } 598 }
553} 599}
554 600
555/* 601/*
556 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
560 */ 606 */
561#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
592 638
593 New(54,PL_savestack,24,ANY); 639 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 641 PL_savestack_max = 24;
596 642
597#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 646 PL_retstack_max = 4;
601#endif 647#endif
602} 648}
… …
604 650
605/* 651/*
606 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
607 */ 653 */
608static void 654static void
609coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
610{ 656{
611 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
613 659
614 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
625 671
626 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 673 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 675 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 677 Safefree (PL_retstack);
632#endif 678#endif
633} 679}
634 680
635static size_t 681static size_t
… …
651 #undef VAR 697 #undef VAR
652 } 698 }
653 else 699 else
654 slot = coro->slot; 700 slot = coro->slot;
655 701
702 if (slot)
703 {
656 rss += sizeof (slot->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
663 711
664#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
666#endif 714#endif
715 }
667 } 716 }
668 717
669 return rss; 718 return rss;
670} 719}
671 720
672/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
673 722
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
676 733
677/* 734/*
678 * This overrides the default magic get method of %SIG elements. 735 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 737 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 745{
689 const char *s = MgPV_nolen_const (mg); 746 const char *s = MgPV_nolen_const (mg);
690 747
691 if (*s == '_') 748 if (*s == '_')
692 { 749 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 750 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
695 } 760 }
696 761
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 787}
699 788
700static int 789static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 791{
… …
712 if (svp) 801 if (svp)
713 { 802 {
714 SV *old = *svp; 803 SV *old = *svp;
715 *svp = newSVsv (sv); 804 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 805 SvREFCNT_dec (old);
717 return; 806 return 0;
718 } 807 }
719 } 808 }
720 809
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
722} 824}
723 825
724static void 826static void
725coro_setup (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
726{ 828{
… …
736 PL_curpm = 0; 838 PL_curpm = 0;
737 PL_curpad = 0; 839 PL_curpad = 0;
738 PL_localizing = 0; 840 PL_localizing = 0;
739 PL_dirty = 0; 841 PL_dirty = 0;
740 PL_restartop = 0; 842 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0;
845#endif
741 846
742 /* recreate the die/warn hooks */ 847 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 850
746 GvSV (PL_defgv) = newSV (0); 851 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 852 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 853 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv)); 855 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 857
753 { 858 {
754 dSP; 859 dSP;
755 LOGOP myop; 860 UNOP myop;
756 861
757 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 863 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
760 865
761 PUSHMARK (SP); 866 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 871 SPAGAIN;
767 } 872 }
768 873
769 /* this newly created coroutine might be run on an existing cctx which most 874 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
772 * so we ENTER here for symmetry
773 */ 876 */
774 ENTER; 877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
775} 879}
776 880
777static void 881static void
778coro_destroy (pTHX_ struct coro *coro) 882coro_destruct (pTHX_ struct coro *coro)
779{ 883{
780 if (!IN_DESTRUCT) 884 if (!IN_DESTRUCT)
781 { 885 {
782 /* restore all saved variables and stuff */ 886 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 887 LEAVE_SCOPE (0);
… …
805 SvREFCNT_dec (PL_warnhook); 909 SvREFCNT_dec (PL_warnhook);
806 910
807 SvREFCNT_dec (coro->saved_deffh); 911 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 912 SvREFCNT_dec (coro->throw);
809 913
810 coro_destroy_stacks (aTHX); 914 coro_destruct_stacks (aTHX);
811} 915}
812 916
813static void 917INLINE void
814free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
815{ 919{
816 if (expect_true (coro_mortal)) 920 if (expect_true (coro_mortal))
817 { 921 {
818 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
… …
823static int 927static int
824runops_trace (pTHX) 928runops_trace (pTHX)
825{ 929{
826 COP *oldcop = 0; 930 COP *oldcop = 0;
827 int oldcxix = -2; 931 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
830 934
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 { 936 {
833 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 956 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 957 : bot;
854 958
855 av_extend (av, top - bot); 959 av_extend (av, top - bot);
856 while (bot < top) 960 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 961 av_push (av, SvREFCNT_inc_NN (*bot++));
858 962
859 PL_runops = RUNOPS_DEFAULT; 963 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 964 ENTER;
861 SAVETMPS; 965 SAVETMPS;
862 EXTEND (SP, 3); 966 EXTEND (SP, 3);
… …
942 1046
943 TAINT_NOT; 1047 TAINT_NOT;
944 return 0; 1048 return 0;
945} 1049}
946 1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
1056}
1057
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
948/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
950static void NOINLINE 1062static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1064{
953 dSP; 1065 dSP;
954 LOGOP myop; 1066 UNOP myop;
955 1067
956 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
957 1069
958 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
960 1072
961 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
962 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964 1076
965 PUSHMARK (SP); 1077 PUSHMARK (SP);
966 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969 PUTBACK; 1081 PUTBACK;
970 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972 SPAGAIN; 1084 SPAGAIN;
973} 1085}
974 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
975/* 1094/*
976 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
977 */ 1096 */
978static void 1097static void
979cctx_run (void *arg) 1098cctx_run (void *arg)
980{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
981 dTHX; 1106 dTHX;
982 1107
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
984 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
985
986 /* we now skip the entersub that lead to transfer() */
987 PL_op = PL_op->op_next; 1110 /* PL_nop = PL_nop->op_next */
988 1111
989 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
995 1121
996 /* 1122 /*
997 * If perl-run returns we assume exit() was being called or the coro 1123 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug) 1124 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the 1125 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
1002 */ 1128 */
1003 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
1005} 1132}
1006 1133
1007static coro_cctx * 1134static coro_cctx *
1008cctx_new () 1135cctx_new ()
1009{ 1136{
1010 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1166 void *stack_start;
1012 size_t stack_size; 1167 size_t stack_size;
1013 1168
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1169#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1173
1023 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
1024 { 1175 {
1025# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1178 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
1031 } 1182 }
1032 else 1183 else
1033#endif 1184#endif
1034 { 1185 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
1037 1188
1038 if (!cctx->sptr) 1189 if (!cctx->sptr)
1039 { 1190 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
1042 } 1193 }
1043 1194
1044 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
1046 } 1197 }
1047 1198
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1204
1051 return cctx; 1205 return cctx;
1052} 1206}
1053 1207
… …
1056{ 1210{
1057 if (!cctx) 1211 if (!cctx)
1058 return; 1212 return;
1059 1213
1060 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
1061 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
1062#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1222 #endif
1065 1223
1066#if HAVE_MMAP 1224#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
1069 else 1227 else
1070#endif 1228#endif
1071 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
1072 1231
1073 Safefree (cctx); 1232 Safefree (cctx);
1074} 1233}
1075 1234
1076/* wether this cctx should be destructed */ 1235/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1237
1079static coro_cctx * 1238static coro_cctx *
1080cctx_get (pTHX) 1239cctx_get (pTHX)
1081{ 1240{
1082 while (expect_true (cctx_first)) 1241 while (expect_true (cctx_first))
… …
1089 return cctx; 1248 return cctx;
1090 1249
1091 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
1092 } 1251 }
1093 1252
1094 return cctx_new (); 1253 return cctx_new_run ();
1095} 1254}
1096 1255
1097static void 1256static void
1098cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
1099{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
1100 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1263 {
1103 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1265 cctx_first = first->next;
1105 --cctx_idle; 1266 --cctx_idle;
1106 1267
… …
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1280{
1120 if (expect_true (prev != next)) 1281 if (expect_true (prev != next))
1121 { 1282 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1123 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1124 1285
1125 if (expect_false (next->flags & CF_RUNNING)) 1286 if (expect_false (next->flags & CF_RUNNING))
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1127 1288
1128 if (expect_false (next->flags & CF_DESTROYED)) 1289 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1130 1291
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1292#if !PERL_VERSION_ATLEAST (5,10,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING) 1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif
1139 } 1296 }
1140} 1297}
1141 1298
1142/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
1143static void NOINLINE 1300static void NOINLINE
1144transfer (pTHX_ struct coro *prev, struct coro *next) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1302{
1146 dSTACKLEVEL; 1303 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1304
1149 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1306 if (expect_false (!next))
1151 { 1307 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1153 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1154 } 1310 }
1155 else if (expect_true (prev != next)) 1311 else if (expect_true (prev != next))
1156 { 1312 {
1157 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
1158 1314
1159 if (expect_false (prev->flags & CF_NEW)) 1315 if (expect_false (prev->flags & CF_NEW))
1160 { 1316 {
1161 /* create a new empty context */ 1317 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1165 } 1321 }
1166 1322
1167 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1168 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1169
1170 LOCK;
1171 1325
1172 /* first get rid of the old state */ 1326 /* first get rid of the old state */
1173 save_perl (aTHX_ prev); 1327 save_perl (aTHX_ prev);
1174 1328
1175 if (expect_false (next->flags & CF_NEW)) 1329 if (expect_false (next->flags & CF_NEW))
… …
1182 else 1336 else
1183 load_perl (aTHX_ next); 1337 load_perl (aTHX_ next);
1184 1338
1185 prev__cctx = prev->cctx; 1339 prev__cctx = prev->cctx;
1186 1340
1187 /* possibly "free" the cctx */ 1341 /* possibly untie and reuse the cctx */
1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1342 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel
1344 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx
1346 ))
1189 { 1347 {
1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1192 1350
1193 prev->cctx = 0; 1351 prev->cctx = 0;
1194 1352
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1203 1361
1204 ++next->usecount; 1362 ++next->usecount;
1205 1363
1206 if (expect_true (!next->cctx)) 1364 if (expect_true (!next->cctx))
1207 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1208
1209 has_throw = !!next->throw;
1210 1366
1211 if (expect_false (prev__cctx != next->cctx)) 1367 if (expect_false (prev__cctx != next->cctx))
1212 { 1368 {
1213 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1214 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1216 } 1372 }
1217 1373
1218 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
1233 } 1375 }
1234} 1376}
1235 1377
1236struct transfer_args
1237{
1238 struct coro *prev, *next;
1239};
1240
1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243 1380
1244/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
1245 1382
1246static int 1383static int
1247coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1248{ 1385{
1249 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1250 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1251 1391
1252 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1253 1393
1254 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1255 { 1395 {
1256 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1257 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1258 LOCK;
1259 --coro_nready; 1398 --coro_nready;
1260 UNLOCK;
1261 } 1399 }
1262 else 1400 else
1263 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1264 1402
1265 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1266 { 1404 {
1267 struct coro temp; 1405 struct coro temp;
1268 1406
1269 if (coro->flags & CF_RUNNING) 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1270 croak ("FATAL: tried to destroy currently running coroutine");
1271 1408
1272 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1273 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1274 1411
1275 coro_destroy (aTHX_ coro); 1412 coro_destruct (aTHX_ coro);
1276 1413
1277 load_perl (aTHX_ &temp); 1414 load_perl (aTHX_ &temp);
1278 1415
1279 coro->slot = 0; 1416 coro->slot = 0;
1280 } 1417 }
… …
1326# define MGf_DUP 0 1463# define MGf_DUP 0
1327#endif 1464#endif
1328}; 1465};
1329 1466
1330static void 1467static void
1331prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1332{ 1469{
1333 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1334 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1335 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1336} 1473}
1337 1474
1338static void 1475static void
1339api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1340{ 1477{
1341 dTHX;
1342 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1343 1479
1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1345 TRANSFER (ta); 1481 TRANSFER (ta, 1);
1346} 1482}
1347 1483
1348/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1349 1485
1350static void 1486INLINE void
1351coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1352{ 1488{
1353 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1354} 1490}
1355 1491
1356static SV * 1492INLINE SV *
1357coro_deq (pTHX) 1493coro_deq (pTHX)
1358{ 1494{
1359 int prio; 1495 int prio;
1360 1496
1361 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1364 1500
1365 return 0; 1501 return 0;
1366} 1502}
1367 1503
1368static int 1504static int
1369api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1370{ 1506{
1371 dTHX;
1372 struct coro *coro; 1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1373 1510
1374 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
1375 coro_sv = SvRV (coro_sv); 1512 coro_sv = SvRV (coro_sv);
1376 1513
1377 coro = SvSTATE (coro_sv); 1514 coro = SvSTATE (coro_sv);
… …
1379 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1380 return 0; 1517 return 0;
1381 1518
1382 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1383 1520
1384 LOCK; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1385 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro);
1386 ++coro_nready; 1525 ++coro_nready;
1387 UNLOCK; 1526
1527 if (sv_hook)
1528 {
1529 dSP;
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1388 1545
1389 return 1; 1546 return 1;
1390} 1547}
1391 1548
1392static int 1549static int
1393api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1394{ 1551{
1395 dTHX;
1396 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397} 1553}
1398 1554
1399static void 1555INLINE void
1400prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1401{ 1557{
1402 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1403 1559
1404 for (;;) 1560 for (;;)
1405 { 1561 {
1406 LOCK;
1407 next_sv = coro_deq (aTHX); 1562 next_sv = coro_deq (aTHX);
1408 1563
1409 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1410 if (expect_false (!next_sv)) 1565 if (expect_false (!next_sv))
1411 { 1566 {
1412 dSP; 1567 dSP;
1413 UNLOCK;
1414 1568
1415 ENTER; 1569 ENTER;
1416 SAVETMPS; 1570 SAVETMPS;
1417 1571
1418 PUSHMARK (SP); 1572 PUSHMARK (SP);
… …
1423 FREETMPS; 1577 FREETMPS;
1424 LEAVE; 1578 LEAVE;
1425 continue; 1579 continue;
1426 } 1580 }
1427 1581
1428 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1429 1583
1430 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1431 if (expect_false (ta->next->flags & CF_DESTROYED)) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1432 { 1586 {
1433 UNLOCK;
1434 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1435 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1436 continue; 1589 continue;
1437 } 1590 }
1438 1591
1439 --coro_nready; 1592 --coro_nready;
1440 UNLOCK;
1441 break; 1593 break;
1442 } 1594 }
1443 1595
1444 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1445 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1446 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1447 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1448 assert (ta->next->flags & CF_READY); 1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1449 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1451 1603
1452 LOCK;
1453 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1454 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1455 UNLOCK;
1456} 1606}
1457 1607
1458static void 1608INLINE void
1459prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1460{ 1610{
1461 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1462 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1463} 1613}
1464 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1465static int 1638static int
1466prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1467{ 1640{
1468 if (coro_nready) 1641 struct coro_transfer_args ta;
1469 { 1642
1470 SV *prev = SvRV (coro_current);
1471 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1472 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1473 return 1; 1648 return 1;
1474 } 1649 }
1475 else 1650 else
1476 return 0; 1651 return 0;
1477} 1652}
1478 1653
1479static void
1480api_schedule (void)
1481{
1482 dTHX;
1483 struct transfer_args ta;
1484
1485 prepare_schedule (aTHX_ &ta);
1486 TRANSFER (ta);
1487}
1488
1489static int 1654static int
1490api_cede (void) 1655api_cede_notself (pTHX)
1491{ 1656{
1492 dTHX; 1657 if (coro_nready)
1658 {
1493 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1494 1660
1495 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1496
1497 if (expect_true (ta.prev != ta.next))
1498 {
1499 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1500 return 1; 1663 return 1;
1501 } 1664 }
1502 else 1665 else
1503 return 0; 1666 return 0;
1504} 1667}
1505 1668
1506static int 1669static void
1507api_cede_notself (void)
1508{
1509 dTHX;
1510 struct transfer_args ta;
1511
1512 if (prepare_cede_notself (aTHX_ &ta))
1513 {
1514 TRANSFER (ta);
1515 return 1;
1516 }
1517 else
1518 return 0;
1519}
1520
1521static void
1522api_trace (SV *coro_sv, int flags) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1523{ 1671{
1524 dTHX;
1525 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1526 1673
1527 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1528 { 1675 {
1529 if (!coro->cctx) 1676 if (!coro->cctx)
1530 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1531 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1533 1680
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 } 1682 }
1536 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1537 { 1684 {
… …
1542 else 1689 else
1543 coro->slot->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1544 } 1691 }
1545} 1692}
1546 1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede (aTHX);
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769/*****************************************************************************/
1770
1771static const CV *slf_cv; /* for quick consistency check */
1772
1773static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774static SV *slf_arg0;
1775static SV *slf_arg1;
1776static SV *slf_arg2;
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 dSP;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
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 PUTBACK;
1903
1904 /* now call the init function, which needs to set up slf_frame */
1905 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908 /* pop args */
1909 SP = PL_stack_base + POPMARK;
1910
1911 PUTBACK;
1912 }
1913
1914 /* now that we have a slf_frame, interpret it! */
1915 /* we use a callback system not to make the code needlessly */
1916 /* complicated, but so we can run multiple perl coros from one cctx */
1917
1918 do
1919 {
1920 struct coro_transfer_args ta;
1921
1922 slf_frame.prepare (aTHX_ &ta);
1923 TRANSFER (ta, 0);
1924
1925 checkmark = PL_stack_sp - PL_stack_base;
1926 }
1927 while (slf_frame.check (aTHX_ &slf_frame));
1928
1929 {
1930 dSP;
1931 SV **bot = PL_stack_base + checkmark;
1932 int gimme = GIMME_V;
1933
1934 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936 /* make sure we put something on the stack in scalar context */
1937 if (gimme == G_SCALAR)
1938 {
1939 if (sp == bot)
1940 XPUSHs (&PL_sv_undef);
1941
1942 SP = bot + 1;
1943 }
1944
1945 PUTBACK;
1946 }
1947
1948 {
1949 struct coro *coro = SvSTATE_current;
1950
1951 if (expect_false (coro->throw))
1952 {
1953 SV *exception = sv_2mortal (coro->throw);
1954
1955 coro->throw = 0;
1956 sv_setsv (ERRSV, exception);
1957 croak (0);
1958 }
1959 }
1960
1961 return NORMAL;
1962}
1963
1964static void
1965api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
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 if (items > 3)
1974 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976 CvFLAGS (cv) |= CVf_SLF;
1977 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978 slf_cv = cv;
1979
1980 /* we patch the op, and then re-run the whole call */
1981 /* we have to put the same argument on the stack for this to work */
1982 /* and this will be done by pp_restore */
1983 slf_restore.op_next = (OP *)&slf_restore;
1984 slf_restore.op_type = OP_CUSTOM;
1985 slf_restore.op_ppaddr = pp_restore;
1986 slf_restore.op_first = PL_op;
1987
1988 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992 PL_op->op_ppaddr = pp_slf;
1993
1994 PL_op = (OP *)&slf_restore;
1995}
1996
1997/*****************************************************************************/
1998
1999static void
2000coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001{
2002 SV *count_sv = AvARRAY (av)[0];
2003 IV count = SvIVX (count_sv);
2004
2005 count += adjust;
2006 SvIVX (count_sv) = count;
2007
2008 /* now wake up as many waiters as are expected to lock */
2009 while (count > 0 && AvFILLp (av) > 0)
2010 {
2011 SV *cb;
2012
2013 /* swap first two elements so we can shift a waiter */
2014 AvARRAY (av)[0] = AvARRAY (av)[1];
2015 AvARRAY (av)[1] = count_sv;
2016 cb = av_shift (av);
2017
2018 if (SvOBJECT (cb))
2019 api_ready (aTHX_ cb);
2020 else
2021 croak ("callbacks not yet supported");
2022
2023 SvREFCNT_dec (cb);
2024
2025 --count;
2026 }
2027}
2028
2029static void
2030coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2031{
2032 /* call $sem->adjust (0) to possibly wake up some other waiters */
2033 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2034}
2035
2036static int
2037slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2038{
2039 AV *av = (AV *)frame->data;
2040 SV *count_sv = AvARRAY (av)[0];
2041
2042 if (SvIVX (count_sv) > 0)
2043 {
2044 SvSTATE_current->on_destroy = 0;
2045 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2046 return 0;
2047 }
2048 else
2049 {
2050 int i;
2051 /* if we were woken up but can't down, we look through the whole */
2052 /* waiters list and only add us if we aren't in there already */
2053 /* this avoids some degenerate memory usage cases */
2054
2055 for (i = 1; i <= AvFILLp (av); ++i)
2056 if (AvARRAY (av)[i] == SvRV (coro_current))
2057 return 1;
2058
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 return 1;
2061 }
2062}
2063
2064static void
2065slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 AV *av = (AV *)SvRV (arg [0]);
2068
2069 if (SvIVX (AvARRAY (av)[0]) > 0)
2070 {
2071 frame->data = (void *)av;
2072 frame->prepare = prepare_nop;
2073 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074 }
2075 else
2076 {
2077 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078
2079 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080 frame->prepare = prepare_schedule;
2081
2082 /* to avoid race conditions when a woken-up coro gets terminated */
2083 /* we arrange for a temporary on_destroy that calls adjust (0) */
2084 assert (!SvSTATE_current->on_destroy);//D
2085 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086 }
2087
2088 frame->check = slf_check_semaphore_down;
2089
2090}
2091
2092/*****************************************************************************/
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{
2102 CV *cv = (CV *)NEWSV (0, 0);
2103
2104 sv_upgrade ((SV *)cv, SVt_PVCV);
2105
2106 CvANON_on (cv);
2107 CvISXSUB_on (cv);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110
2111 return newRV_noinc ((SV *)cv);
2112}
2113
2114/*****************************************************************************/
2115
1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2116MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548 2117
1549PROTOTYPES: DISABLE 2118PROTOTYPES: DISABLE
1550 2119
1551BOOT: 2120BOOT:
1552{ 2121{
1553#ifdef USE_ITHREADS 2122#ifdef USE_ITHREADS
1554 MUTEX_INIT (&coro_mutex); 2123# if CORO_PTHREAD
2124 coro_thx = PERL_GET_CONTEXT;
2125# endif
1555#endif 2126#endif
1556 BOOT_PAGESIZE; 2127 BOOT_PAGESIZE;
1557 2128
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2129 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2130 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560 2131
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2132 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2133 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2134 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565 2135
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2136 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2137 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2138 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569 2139
… …
1578 main_top_env = PL_top_env; 2148 main_top_env = PL_top_env;
1579 2149
1580 while (main_top_env->je_prev) 2150 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev; 2151 main_top_env = main_top_env->je_prev;
1582 2152
2153 {
2154 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155
2156 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157 hv_store_ent (PL_custom_op_names, slf,
2158 newSVpv ("coro_slf", 0), 0);
2159
2160 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161 hv_store_ent (PL_custom_op_descs, slf,
2162 newSVpv ("coro schedule like function", 0), 0);
2163 }
2164
1583 coroapi.ver = CORO_API_VERSION; 2165 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION; 2166 coroapi.rev = CORO_API_REVISION;
2167
1585 coroapi.transfer = api_transfer; 2168 coroapi.transfer = api_transfer;
2169
2170 coroapi.sv_state = SvSTATE_;
2171 coroapi.execute_slf = api_execute_slf;
2172 coroapi.prepare_nop = prepare_nop;
2173 coroapi.prepare_schedule = prepare_schedule;
2174 coroapi.prepare_cede = prepare_cede;
2175 coroapi.prepare_cede_notself = prepare_cede_notself;
2176
2177 {
2178 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2179
2180 if (!svp) croak ("Time::HiRes is required");
2181 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2182
2183 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2184 }
1586 2185
1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2186 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588} 2187}
1589 2188
1590SV * 2189SV *
… …
1614 av_push (coro->args, newSVsv (ST (i))); 2213 av_push (coro->args, newSVsv (ST (i)));
1615} 2214}
1616 OUTPUT: 2215 OUTPUT:
1617 RETVAL 2216 RETVAL
1618 2217
1619# these not obviously related functions are all rolled into the same xs
1620# function to increase chances that they all will call transfer with the same
1621# stack offset
1622void 2218void
1623_set_stacklevel (...) 2219_set_stacklevel (...)
1624 ALIAS: 2220 CODE:
1625 Coro::State::transfer = 1 2221 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1626 Coro::schedule = 2
1627 Coro::cede = 3
1628 Coro::cede_notself = 4
1629 CODE:
1630{
1631 struct transfer_args ta;
1632 2222
1633 PUTBACK; 2223void
1634 switch (ix) 2224transfer (...)
1635 { 2225 PROTOTYPE: $$
1636 case 0: 2226 CODE:
1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2227 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1638 ta.next = 0;
1639 break;
1640
1641 case 1:
1642 if (items != 2)
1643 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644
1645 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1646 break;
1647
1648 case 2:
1649 prepare_schedule (aTHX_ &ta);
1650 break;
1651
1652 case 3:
1653 prepare_cede (aTHX_ &ta);
1654 break;
1655
1656 case 4:
1657 if (!prepare_cede_notself (aTHX_ &ta))
1658 XSRETURN_EMPTY;
1659
1660 break;
1661 }
1662 SPAGAIN;
1663
1664 BARRIER;
1665 PUTBACK;
1666 TRANSFER (ta);
1667 SPAGAIN; /* might be the sp of a different coroutine now */
1668 /* be extra careful not to ever do anything after TRANSFER */
1669}
1670 2228
1671bool 2229bool
1672_destroy (SV *coro_sv) 2230_destroy (SV *coro_sv)
1673 CODE: 2231 CODE:
1674 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2232 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675 OUTPUT: 2233 OUTPUT:
1676 RETVAL 2234 RETVAL
1677 2235
1678void 2236void
1679_exit (code) 2237_exit (int code)
1680 int code
1681 PROTOTYPE: $ 2238 PROTOTYPE: $
1682 CODE: 2239 CODE:
1683 _exit (code); 2240 _exit (code);
1684 2241
1685int 2242int
1686cctx_stacksize (int new_stacksize = 0) 2243cctx_stacksize (int new_stacksize = 0)
2244 PROTOTYPE: ;$
1687 CODE: 2245 CODE:
1688 RETVAL = coro_stacksize; 2246 RETVAL = cctx_stacksize;
1689 if (new_stacksize) 2247 if (new_stacksize)
2248 {
1690 coro_stacksize = new_stacksize; 2249 cctx_stacksize = new_stacksize;
2250 ++cctx_gen;
2251 }
1691 OUTPUT: 2252 OUTPUT:
1692 RETVAL 2253 RETVAL
1693 2254
1694int 2255int
2256cctx_max_idle (int max_idle = 0)
2257 PROTOTYPE: ;$
2258 CODE:
2259 RETVAL = cctx_max_idle;
2260 if (max_idle > 1)
2261 cctx_max_idle = max_idle;
2262 OUTPUT:
2263 RETVAL
2264
2265int
1695cctx_count () 2266cctx_count ()
2267 PROTOTYPE:
1696 CODE: 2268 CODE:
1697 RETVAL = cctx_count; 2269 RETVAL = cctx_count;
1698 OUTPUT: 2270 OUTPUT:
1699 RETVAL 2271 RETVAL
1700 2272
1701int 2273int
1702cctx_idle () 2274cctx_idle ()
2275 PROTOTYPE:
1703 CODE: 2276 CODE:
1704 RETVAL = cctx_idle; 2277 RETVAL = cctx_idle;
1705 OUTPUT: 2278 OUTPUT:
1706 RETVAL 2279 RETVAL
1707 2280
1708void 2281void
1709list () 2282list ()
2283 PROTOTYPE:
1710 PPCODE: 2284 PPCODE:
1711{ 2285{
1712 struct coro *coro; 2286 struct coro *coro;
1713 for (coro = coro_first; coro; coro = coro->next) 2287 for (coro = coro_first; coro; coro = coro->next)
1714 if (coro->hv) 2288 if (coro->hv)
… …
1719call (Coro::State coro, SV *coderef) 2293call (Coro::State coro, SV *coderef)
1720 ALIAS: 2294 ALIAS:
1721 eval = 1 2295 eval = 1
1722 CODE: 2296 CODE:
1723{ 2297{
1724 if (coro->mainstack) 2298 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1725 { 2299 {
1726 struct coro temp; 2300 struct coro temp;
1727 2301
1728 if (!(coro->flags & CF_RUNNING)) 2302 if (!(coro->flags & CF_RUNNING))
1729 { 2303 {
… …
1773 RETVAL = boolSV (coro->flags & ix); 2347 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT: 2348 OUTPUT:
1775 RETVAL 2349 RETVAL
1776 2350
1777void 2351void
2352throw (Coro::State self, SV *throw = &PL_sv_undef)
2353 PROTOTYPE: $;$
2354 CODE:
2355 SvREFCNT_dec (self->throw);
2356 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2357
2358void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2359api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360 PROTOTYPE: $;$
2361 C_ARGS: aTHX_ coro, flags
1779 2362
1780SV * 2363SV *
1781has_stack (Coro::State coro) 2364has_cctx (Coro::State coro)
1782 PROTOTYPE: $ 2365 PROTOTYPE: $
1783 CODE: 2366 CODE:
1784 RETVAL = boolSV (!!coro->cctx); 2367 RETVAL = boolSV (!!coro->cctx);
1785 OUTPUT: 2368 OUTPUT:
1786 RETVAL 2369 RETVAL
… …
1791 CODE: 2374 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2375 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT: 2376 OUTPUT:
1794 RETVAL 2377 RETVAL
1795 2378
1796IV 2379UV
1797rss (Coro::State coro) 2380rss (Coro::State coro)
1798 PROTOTYPE: $ 2381 PROTOTYPE: $
1799 ALIAS: 2382 ALIAS:
1800 usecount = 1 2383 usecount = 1
1801 CODE: 2384 CODE:
… …
1807 OUTPUT: 2390 OUTPUT:
1808 RETVAL 2391 RETVAL
1809 2392
1810void 2393void
1811force_cctx () 2394force_cctx ()
2395 PROTOTYPE:
1812 CODE: 2396 CODE:
1813 struct coro *coro = SvSTATE (coro_current);
1814 coro->cctx->idle_sp = 0; 2397 SvSTATE_current->cctx->idle_sp = 0;
2398
2399void
2400swap_defsv (Coro::State self)
2401 PROTOTYPE: $
2402 ALIAS:
2403 swap_defav = 1
2404 CODE:
2405 if (!self->slot)
2406 croak ("cannot swap state with coroutine that has no saved state,");
2407 else
2408 {
2409 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2410 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411
2412 SV *tmp = *src; *src = *dst; *dst = tmp;
2413 }
1815 2414
1816MODULE = Coro::State PACKAGE = Coro 2415MODULE = Coro::State PACKAGE = Coro
1817 2416
1818BOOT: 2417BOOT:
1819{ 2418{
1820 int i; 2419 int i;
1821 2420
2421 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1822 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2422 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1823 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2423 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1824 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1825 2424
1826 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2425 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1827 SvREADONLY_on (coro_current); 2426 SvREADONLY_on (coro_current);
1828 2427
1829 coro_stash = gv_stashpv ("Coro", TRUE); 2428 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1837 2436
1838 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2437 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1839 coro_ready[i] = newAV (); 2438 coro_ready[i] = newAV ();
1840 2439
1841 { 2440 {
1842 SV *sv = perl_get_sv ("Coro::API", TRUE); 2441 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1843 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1844 2442
1845 coroapi.schedule = api_schedule; 2443 coroapi.schedule = api_schedule;
1846 coroapi.cede = api_cede; 2444 coroapi.cede = api_cede;
1847 coroapi.cede_notself = api_cede_notself; 2445 coroapi.cede_notself = api_cede_notself;
1848 coroapi.ready = api_ready; 2446 coroapi.ready = api_ready;
1849 coroapi.is_ready = api_is_ready; 2447 coroapi.is_ready = api_is_ready;
1850 coroapi.nready = &coro_nready; 2448 coroapi.nready = coro_nready;
1851 coroapi.current = coro_current; 2449 coroapi.current = coro_current;
1852 2450
1853 GCoroAPI = &coroapi; 2451 GCoroAPI = &coroapi;
1854 sv_setiv (sv, (IV)&coroapi); 2452 sv_setiv (sv, (IV)&coroapi);
1855 SvREADONLY_on (sv); 2453 SvREADONLY_on (sv);
1856 } 2454 }
1857} 2455}
2456
2457void
2458schedule (...)
2459 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2461
2462void
2463cede (...)
2464 CODE:
2465 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2466
2467void
2468cede_notself (...)
2469 CODE:
2470 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1858 2471
1859void 2472void
1860_set_current (SV *current) 2473_set_current (SV *current)
1861 PROTOTYPE: $ 2474 PROTOTYPE: $
1862 CODE: 2475 CODE:
1863 SvREFCNT_dec (SvRV (coro_current)); 2476 SvREFCNT_dec (SvRV (coro_current));
1864 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2477 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2478
2479void
2480_set_readyhook (SV *hook)
2481 PROTOTYPE: $
2482 CODE:
2483 SvREFCNT_dec (coro_readyhook);
2484 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1865 2485
1866int 2486int
1867prio (Coro::State coro, int newprio = 0) 2487prio (Coro::State coro, int newprio = 0)
2488 PROTOTYPE: $;$
1868 ALIAS: 2489 ALIAS:
1869 nice = 1 2490 nice = 1
1870 CODE: 2491 CODE:
1871{ 2492{
1872 RETVAL = coro->prio; 2493 RETVAL = coro->prio;
… …
1887 2508
1888SV * 2509SV *
1889ready (SV *self) 2510ready (SV *self)
1890 PROTOTYPE: $ 2511 PROTOTYPE: $
1891 CODE: 2512 CODE:
1892 RETVAL = boolSV (api_ready (self)); 2513 RETVAL = boolSV (api_ready (aTHX_ self));
1893 OUTPUT: 2514 OUTPUT:
1894 RETVAL 2515 RETVAL
1895 2516
1896int 2517int
1897nready (...) 2518nready (...)
… …
1899 CODE: 2520 CODE:
1900 RETVAL = coro_nready; 2521 RETVAL = coro_nready;
1901 OUTPUT: 2522 OUTPUT:
1902 RETVAL 2523 RETVAL
1903 2524
1904void
1905throw (Coro::State self, SV *throw = &PL_sv_undef)
1906 PROTOTYPE: $;$
1907 CODE:
1908 SvREFCNT_dec (self->throw);
1909 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1910
1911void
1912swap_defsv (Coro::State self)
1913 PROTOTYPE: $
1914 ALIAS:
1915 swap_defav = 1
1916 CODE:
1917 if (!self->slot)
1918 croak ("cannot swap state with coroutine that has no saved state");
1919 else
1920 {
1921 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1922 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1923
1924 SV *tmp = *src; *src = *dst; *dst = tmp;
1925 }
1926
1927# for async_pool speedup 2525# for async_pool speedup
1928void 2526void
1929_pool_1 (SV *cb) 2527_pool_1 (SV *cb)
1930 CODE: 2528 CODE:
1931{ 2529{
1932 struct coro *coro = SvSTATE (coro_current);
1933 HV *hv = (HV *)SvRV (coro_current); 2530 HV *hv = (HV *)SvRV (coro_current);
2531 struct coro *coro = SvSTATE_hv ((SV *)hv);
1934 AV *defav = GvAV (PL_defgv); 2532 AV *defav = GvAV (PL_defgv);
1935 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2533 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1936 AV *invoke_av; 2534 AV *invoke_av;
1937 int i, len; 2535 int i, len;
1938 2536
1939 if (!invoke) 2537 if (!invoke)
1940 { 2538 {
1941 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2539 SV *old = PL_diehook;
2540 PL_diehook = 0;
2541 SvREFCNT_dec (old);
1942 croak ("\3async_pool terminate\2\n"); 2542 croak ("\3async_pool terminate\2\n");
1943 } 2543 }
1944 2544
1945 SvREFCNT_dec (coro->saved_deffh); 2545 SvREFCNT_dec (coro->saved_deffh);
1946 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2546 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1947 2547
1948 hv_store (hv, "desc", sizeof ("desc") - 1, 2548 hv_store (hv, "desc", sizeof ("desc") - 1,
1949 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2549 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1950 2550
1951 invoke_av = (AV *)SvRV (invoke); 2551 invoke_av = (AV *)SvRV (invoke);
… …
1955 2555
1956 if (len > 0) 2556 if (len > 0)
1957 { 2557 {
1958 av_fill (defav, len - 1); 2558 av_fill (defav, len - 1);
1959 for (i = 0; i < len; ++i) 2559 for (i = 0; i < len; ++i)
1960 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2560 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1961 } 2561 }
1962
1963 SvREFCNT_dec (invoke);
1964} 2562}
1965 2563
1966void 2564void
1967_pool_2 (SV *cb) 2565_pool_2 (SV *cb)
1968 CODE: 2566 CODE:
1969{ 2567{
1970 struct coro *coro = SvSTATE (coro_current); 2568 struct coro *coro = SvSTATE_current;
1971 2569
1972 sv_setsv (cb, &PL_sv_undef); 2570 sv_setsv (cb, &PL_sv_undef);
1973 2571
1974 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2572 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1975 coro->saved_deffh = 0; 2573 coro->saved_deffh = 0;
1976 2574
1977 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2575 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1978 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2576 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1979 { 2577 {
1980 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2578 SV *old = PL_diehook;
2579 PL_diehook = 0;
2580 SvREFCNT_dec (old);
1981 croak ("\3async_pool terminate\2\n"); 2581 croak ("\3async_pool terminate\2\n");
1982 } 2582 }
1983 2583
1984 av_clear (GvAV (PL_defgv)); 2584 av_clear (GvAV (PL_defgv));
1985 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2585 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1986 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2586 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1987 2587
1988 coro->prio = 0; 2588 coro->prio = 0;
1989 2589
1990 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2590 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1991 api_trace (coro_current, 0); 2591 api_trace (aTHX_ coro_current, 0);
1992 2592
1993 av_push (av_async_pool, newSVsv (coro_current)); 2593 av_push (av_async_pool, newSVsv (coro_current));
1994} 2594}
1995 2595
1996 2596
1997MODULE = Coro::State PACKAGE = Coro::AIO 2597MODULE = Coro::State PACKAGE = Coro::AIO
1998 2598
1999SV * 2599void
2000_get_state () 2600_get_state (SV *self)
2601 PROTOTYPE: $
2001 CODE: 2602 PPCODE:
2002{ 2603{
2003 struct io_state *data; 2604 AV *defav = GvAV (PL_defgv);
2004 2605 AV *av = newAV ();
2606 int i;
2005 RETVAL = newSV (sizeof (struct io_state)); 2607 SV *data_sv = newSV (sizeof (struct io_state));
2006 data = (struct io_state *)SvPVX (RETVAL); 2608 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2007 SvCUR_set (RETVAL, sizeof (struct io_state)); 2609 SvCUR_set (data_sv, sizeof (struct io_state));
2008 SvPOK_only (RETVAL); 2610 SvPOK_only (data_sv);
2009 2611
2010 data->errorno = errno; 2612 data->errorno = errno;
2011 data->laststype = PL_laststype; 2613 data->laststype = PL_laststype;
2012 data->laststatval = PL_laststatval; 2614 data->laststatval = PL_laststatval;
2013 data->statcache = PL_statcache; 2615 data->statcache = PL_statcache;
2616
2617 av_extend (av, AvFILLp (defav) + 1 + 1);
2618
2619 for (i = 0; i <= AvFILLp (defav); ++i)
2620 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2621
2622 av_push (av, data_sv);
2623
2624 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626 api_ready (aTHX_ self);
2014} 2627}
2015 OUTPUT:
2016 RETVAL
2017 2628
2018void 2629void
2019_set_state (char *data_) 2630_set_state (SV *state)
2020 PROTOTYPE: $ 2631 PROTOTYPE: $
2021 CODE: 2632 PPCODE:
2022{ 2633{
2023 struct io_state *data = (void *)data_; 2634 AV *av = (AV *)SvRV (state);
2635 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636 int i;
2024 2637
2025 errno = data->errorno; 2638 errno = data->errorno;
2026 PL_laststype = data->laststype; 2639 PL_laststype = data->laststype;
2027 PL_laststatval = data->laststatval; 2640 PL_laststatval = data->laststatval;
2028 PL_statcache = data->statcache; 2641 PL_statcache = data->statcache;
2029}
2030 2642
2643 EXTEND (SP, AvFILLp (av));
2644 for (i = 0; i < AvFILLp (av); ++i)
2645 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646}
2647
2648
2649MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651BOOT:
2652 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654void
2655_schedule (...)
2656 CODE:
2657{
2658 static int incede;
2659
2660 api_cede_notself (aTHX);
2661
2662 ++incede;
2663 while (coro_nready >= incede && api_cede (aTHX))
2664 ;
2665
2666 sv_setsv (sv_activity, &PL_sv_undef);
2667 if (coro_nready >= incede)
2668 {
2669 PUSHMARK (SP);
2670 PUTBACK;
2671 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2672 SPAGAIN;
2673 }
2674
2675 --incede;
2676}
2677
2678
2679MODULE = Coro::State PACKAGE = PerlIO::cede
2680
2681BOOT:
2682 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683
2684MODULE = Coro::State PACKAGE = Coro::Semaphore
2685
2686SV *
2687new (SV *klass, SV *count_ = 0)
2688 CODE:
2689{
2690 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2691 AV *av = newAV ();
2692 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2693 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2694}
2695 OUTPUT:
2696 RETVAL
2697
2698SV *
2699count (SV *self)
2700 CODE:
2701 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2702 OUTPUT:
2703 RETVAL
2704
2705void
2706up (SV *self, int adjust = 1)
2707 ALIAS:
2708 adjust = 1
2709 CODE:
2710 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711
2712void
2713down (SV *self)
2714 CODE:
2715 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2716
2717void
2718try (SV *self)
2719 PPCODE:
2720{
2721 AV *av = (AV *)SvRV (self);
2722 SV *count_sv = AvARRAY (av)[0];
2723 IV count = SvIVX (count_sv);
2724
2725 if (count > 0)
2726 {
2727 --count;
2728 SvIVX (count_sv) = count;
2729 XSRETURN_YES;
2730 }
2731 else
2732 XSRETURN_NO;
2733}
2734
2735void
2736waiters (SV *self)
2737 CODE:
2738{
2739 AV *av = (AV *)SvRV (self);
2740
2741 if (GIMME_V == G_SCALAR)
2742 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2743 else
2744 {
2745 int i;
2746 EXTEND (SP, AvFILLp (av) + 1 - 1);
2747 for (i = 1; i <= AvFILLp (av); ++i)
2748 PUSHs (newSVsv (AvARRAY (av)[i]));
2749 }
2750}
2751

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