ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.227 by root, Sat Apr 5 22:29:54 2008 UTC vs.
Revision 1.279 by root, Sun Nov 16 08:59:16 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
147
133static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
136#else 155#else
156
137# define LOCK (void)0 157# define LOCK (void)0
138# define UNLOCK (void)0 158# define UNLOCK (void)0
159
139#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
140 166
141/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
142struct io_state 168struct io_state
143{ 169{
170 AV *res;
144 int errorno; 171 int errorno;
145 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
146 int laststatval; 173 int laststatval;
147 Stat_t statcache; 174 Stat_t statcache;
148}; 175};
149 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 183static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
156 187
157static GV *irsgv; /* $/ */ 188static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 189static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 190static SV *rv_diehook;
160static SV *rv_warnhook; 191static SV *rv_warnhook;
… …
162 193
163/* async_pool helper stuff */ 194/* async_pool helper stuff */
164static SV *sv_pool_rss; 195static SV *sv_pool_rss;
165static SV *sv_pool_size; 196static SV *sv_pool_size;
166static AV *av_async_pool; 197static AV *av_async_pool;
198
199/* Coro::AnyEvent */
200static SV *sv_activity;
167 201
168static struct coro_cctx *cctx_first; 202static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 203static int cctx_count, cctx_idle;
170 204
171enum { 205enum {
… …
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 212};
179 213
180/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 215typedef struct coro_cctx
216{
182 struct coro_cctx *next; 217 struct coro_cctx *next;
183 218
184 /* the stack */ 219 /* the stack */
185 void *sptr; 220 void *sptr;
186 size_t ssize; 221 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 224 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 */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 226 JMPENV *top_env;
192 coro_context cctx; 227 coro_context cctx;
193 228
229 U32 gen;
194#if CORO_USE_VALGRIND 230#if CORO_USE_VALGRIND
195 int valgrind_id; 231 int valgrind_id;
196#endif 232#endif
197 unsigned char flags; 233 unsigned char flags;
198} coro_cctx; 234} coro_cctx;
… …
203 CF_NEW = 0x0004, /* has never been switched to */ 239 CF_NEW = 0x0004, /* has never been switched to */
204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
205}; 241};
206 242
207/* the structure where most of the perl state is stored, overlaid on the cxstack */ 243/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct { 244typedef struct
245{
209 SV *defsv; 246 SV *defsv;
210 AV *defav; 247 AV *defav;
211 SV *errsv; 248 SV *errsv;
212 SV *irsgv; 249 SV *irsgv;
213#define VAR(name,type) type name; 250#define VAR(name,type) type name;
… …
217 254
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219 256
220/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
221struct coro { 258struct coro {
222 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 260 coro_cctx *cctx;
224 261
225 /* process data */ 262 /* process data */
263 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 264 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 265 perl_slots *slot; /* basically the saved sp */
228 266
229 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
… …
245 struct coro *next, *prev; 283 struct coro *next, *prev;
246}; 284};
247 285
248typedef struct coro *Coro__State; 286typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 287typedef struct coro *Coro__State_or_hashref;
288
289static struct CoroSLF slf_frame; /* the current slf frame */
250 290
251/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
252 292
253#define PRIO_MAX 3 293#define PRIO_MAX 3
254#define PRIO_HIGH 1 294#define PRIO_HIGH 1
… …
257#define PRIO_IDLE -3 297#define PRIO_IDLE -3
258#define PRIO_MIN -4 298#define PRIO_MIN -4
259 299
260/* for Coro.pm */ 300/* for Coro.pm */
261static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready;
264static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
265 306
266/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
267 308
268static SV * 309static SV *
269coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
270{ 311{
271#if PERL_VERSION_ATLEAST (5,9,0) 312#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 314 get_sv (name, create);
274#endif 315#endif
275 return get_sv (name, create); 316 return get_sv (name, create);
276} 317}
277 318
278static AV * 319static AV *
279coro_get_av (pTHX_ const char *name, int create) 320coro_get_av (pTHX_ const char *name, int create)
280{ 321{
281#if PERL_VERSION_ATLEAST (5,9,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 324 get_av (name, create);
284#endif 325#endif
285 return get_av (name, create); 326 return get_av (name, create);
286} 327}
287 328
288static HV * 329static HV *
289coro_get_hv (pTHX_ const char *name, int create) 330coro_get_hv (pTHX_ const char *name, int create)
290{ 331{
291#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 334 get_hv (name, create);
294#endif 335#endif
295 return get_hv (name, create); 336 return get_hv (name, create);
296} 337}
… …
301 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
303 344
304 newpadlist = newAV (); 345 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 349#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 351#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 353 --AvFILLp (padlist);
313 354
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
316 357
317 return newpadlist; 358 return newpadlist;
318} 359}
319 360
… …
349 390
350 /* casting is fun. */ 391 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
353 394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396
354 return 0; 397 return 0;
355} 398}
356 399
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
360static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 404 0, 0, 0, 0,
362 coro_cv_free 405 coro_cv_free
363}; 406};
364 407
365#define CORO_MAGIC(sv,type) \ 408#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 409 SvMAGIC (sv) \
367 ? SvMAGIC (sv)->mg_type == type \ 410 ? SvMAGIC (sv)->mg_type == type \
368 ? SvMAGIC (sv) \ 411 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \ 412 : mg_find (sv, type) \
370 : 0 413 : 0
371 414
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 415#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) 416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374 417
375static struct coro * 418INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 419SvSTATE_ (pTHX_ SV *coro)
377{ 420{
378 HV *stash; 421 HV *stash;
379 MAGIC *mg; 422 MAGIC *mg;
380 423
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 453 else
411 { 454 {
412#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
418#else 462#else
… …
470 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
471 } 515 }
472 516
473 PUTBACK; 517 PUTBACK;
474 } 518 }
519
520 slf_frame = c->slf_frame;
475} 521}
476 522
477static void 523static void
478save_perl (pTHX_ Coro__State c) 524save_perl (pTHX_ Coro__State c)
479{ 525{
526 c->slf_frame = slf_frame;
527
480 { 528 {
481 dSP; 529 dSP;
482 I32 cxix = cxstack_ix; 530 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 531 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 532 PERL_SI *top_si = PL_curstackinfo;
… …
502 550
503 if (expect_true (CvDEPTH (cv))) 551 if (expect_true (CvDEPTH (cv)))
504 { 552 {
505 EXTEND (SP, 3); 553 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 554 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 556 PUSHs ((SV *)cv);
509 557
510 CvDEPTH (cv) = 0; 558 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 559 get_padlist (aTHX_ cv);
512 } 560 }
… …
551 #undef VAR 599 #undef VAR
552 } 600 }
553} 601}
554 602
555/* 603/*
556 * allocate various perl stacks. This is an exact copy 604 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 605 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 606 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 607 * not usually need a lot of stackspace.
560 */ 608 */
561#if CORO_PREFER_PERL_FUNCTIONS 609#if CORO_PREFER_PERL_FUNCTIONS
… …
592 640
593 New(54,PL_savestack,24,ANY); 641 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 642 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 643 PL_savestack_max = 24;
596 644
597#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 646 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 647 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 648 PL_retstack_max = 4;
601#endif 649#endif
602} 650}
… …
604 652
605/* 653/*
606 * destroy the stacks, the callchain etc... 654 * destroy the stacks, the callchain etc...
607 */ 655 */
608static void 656static void
609coro_destroy_stacks (pTHX) 657coro_destruct_stacks (pTHX)
610{ 658{
611 while (PL_curstackinfo->si_next) 659 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 660 PL_curstackinfo = PL_curstackinfo->si_next;
613 661
614 while (PL_curstackinfo) 662 while (PL_curstackinfo)
… …
625 673
626 Safefree (PL_tmps_stack); 674 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 675 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 676 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 677 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 678#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 679 Safefree (PL_retstack);
632#endif 680#endif
633} 681}
634 682
635static size_t 683static size_t
… …
651 #undef VAR 699 #undef VAR
652 } 700 }
653 else 701 else
654 slot = coro->slot; 702 slot = coro->slot;
655 703
704 if (slot)
705 {
656 rss += sizeof (slot->curstackinfo); 706 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 709 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 711 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 712 rss += slot->savestack_max * sizeof (ANY);
663 713
664#if !PERL_VERSION_ATLEAST (5,9,0) 714#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 715 rss += slot->retstack_max * sizeof (OP *);
666#endif 716#endif
717 }
667 } 718 }
668 719
669 return rss; 720 return rss;
670} 721}
671 722
672/** coroutine stack handling ************************************************/ 723/** coroutine stack handling ************************************************/
673 724
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 725static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 726static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
727static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
728
729/* apparently < 5.8.8 */
730#ifndef MgPV_nolen_const
731#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
732 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
733 (const char*)(mg)->mg_ptr)
734#endif
676 735
677/* 736/*
678 * This overrides the default magic get method of %SIG elements. 737 * 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 738 * 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 739 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 747{
689 const char *s = MgPV_nolen_const (mg); 748 const char *s = MgPV_nolen_const (mg);
690 749
691 if (*s == '_') 750 if (*s == '_')
692 { 751 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 752 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
760 return 0;
761 }
695 } 762 }
696 763
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = 0;
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 789}
699 790
700static int 791static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 793{
… …
712 if (svp) 803 if (svp)
713 { 804 {
714 SV *old = *svp; 805 SV *old = *svp;
715 *svp = newSVsv (sv); 806 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 807 SvREFCNT_dec (old);
717 return; 808 return 0;
718 } 809 }
719 } 810 }
720 811
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813}
814
815static void
816prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{
818 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta;
820}
821
822static int
823slf_check_nop (pTHX_ struct CoroSLF *frame)
824{
825 return 0;
722} 826}
723 827
724static void 828static void
725coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
726{ 830{
… …
736 PL_curpm = 0; 840 PL_curpm = 0;
737 PL_curpad = 0; 841 PL_curpad = 0;
738 PL_localizing = 0; 842 PL_localizing = 0;
739 PL_dirty = 0; 843 PL_dirty = 0;
740 PL_restartop = 0; 844 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0;
847#endif
741 848
742 /* recreate the die/warn hooks */ 849 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 850 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); 851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 852
746 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 859
753 { 860 {
754 dSP; 861 dSP;
755 LOGOP myop; 862 UNOP myop;
756 863
757 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 865 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
760 867
761 PUSHMARK (SP); 868 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 873 SPAGAIN;
767 } 874 }
768 875
769 /* this newly created coroutine might be run on an existing cctx which most 876 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 877 * 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 */ 878 */
774 ENTER; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
775} 881}
776 882
777static void 883static void
778coro_destroy (pTHX_ struct coro *coro) 884coro_destruct (pTHX_ struct coro *coro)
779{ 885{
780 if (!IN_DESTRUCT) 886 if (!IN_DESTRUCT)
781 { 887 {
782 /* restore all saved variables and stuff */ 888 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 889 LEAVE_SCOPE (0);
… …
805 SvREFCNT_dec (PL_warnhook); 911 SvREFCNT_dec (PL_warnhook);
806 912
807 SvREFCNT_dec (coro->saved_deffh); 913 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 914 SvREFCNT_dec (coro->throw);
809 915
810 coro_destroy_stacks (aTHX); 916 coro_destruct_stacks (aTHX);
811} 917}
812 918
813static void 919INLINE void
814free_coro_mortal (pTHX) 920free_coro_mortal (pTHX)
815{ 921{
816 if (expect_true (coro_mortal)) 922 if (expect_true (coro_mortal))
817 { 923 {
818 SvREFCNT_dec (coro_mortal); 924 SvREFCNT_dec (coro_mortal);
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 958 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 959 : bot;
854 960
855 av_extend (av, top - bot); 961 av_extend (av, top - bot);
856 while (bot < top) 962 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 963 av_push (av, SvREFCNT_inc_NN (*bot++));
858 964
859 PL_runops = RUNOPS_DEFAULT; 965 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 966 ENTER;
861 SAVETMPS; 967 SAVETMPS;
862 EXTEND (SP, 3); 968 EXTEND (SP, 3);
… …
942 1048
943 TAINT_NOT; 1049 TAINT_NOT;
944 return 0; 1050 return 0;
945} 1051}
946 1052
1053static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1055{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0;
1058}
1059
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1060/* 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 */ 1061/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */ 1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
950static void NOINLINE 1064static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1065cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1066{
953 dSP; 1067 dSP;
954 LOGOP myop; 1068 UNOP myop;
955 1069
956 PL_top_env = &PL_start_env; 1070 PL_top_env = &PL_start_env;
957 1071
958 if (cctx->flags & CC_TRACE) 1072 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1073 PL_runops = runops_trace;
960 1074
961 Zero (&myop, 1, LOGOP); 1075 Zero (&myop, 1, UNOP);
962 myop.op_next = PL_op; 1076 myop.op_next = PL_op;
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964 1078
965 PUSHMARK (SP); 1079 PUSHMARK (SP);
966 EXTEND (SP, 2); 1080 EXTEND (SP, 2);
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1081 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969 PUTBACK; 1083 PUTBACK;
970 PL_op = (OP *)&myop; 1084 PL_op = (OP *)&myop;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972 SPAGAIN; 1086 SPAGAIN;
973} 1087}
974 1088
1089/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void
1091transfer_tail (pTHX)
1092{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108}
1109
975/* 1110/*
976 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
977 */ 1112 */
978static void 1113static void
979cctx_run (void *arg) 1114cctx_run (void *arg)
980{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
981 dTHX; 1122 dTHX;
982 1123
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
984 UNLOCK; 1125 /* 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; 1126 /* PL_nop = PL_nop->op_next */
988 1127
989 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX);
1134
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1135 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1136 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1137 perl_run (PL_curinterp);
995 1138
996 /* 1139 /*
997 * If perl-run returns we assume exit() was being called or the coro 1140 * 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) 1141 * 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 1142 * 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" 1143 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1144 * coroutine as Coro has no such concept
1002 */ 1145 */
1003 PL_top_env = main_top_env; 1146 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 }
1005} 1149}
1006 1150
1007static coro_cctx * 1151static coro_cctx *
1008cctx_new () 1152cctx_new ()
1009{ 1153{
1010 coro_cctx *cctx; 1154 coro_cctx *cctx;
1155
1156 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx);
1158
1159 cctx->gen = cctx_gen;
1160 cctx->flags = 0;
1161 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1162
1163 return cctx;
1164}
1165
1166/* create a new cctx only suitable as source */
1167static coro_cctx *
1168cctx_new_empty ()
1169{
1170 coro_cctx *cctx = cctx_new ();
1171
1172 cctx->sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx *
1180cctx_new_run ()
1181{
1182 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1183 void *stack_start;
1012 size_t stack_size; 1184 size_t stack_size;
1013 1185
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1186#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1188 /* 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); 1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1190
1023 if (cctx->sptr != (void *)-1) 1191 if (cctx->sptr != (void *)-1)
1024 { 1192 {
1025# if CORO_STACKGUARD 1193 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1195 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1198 cctx->flags |= CC_MAPPED;
1031 } 1199 }
1032 else 1200 else
1033#endif 1201#endif
1034 { 1202 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1204 New (0, cctx->sptr, cctx_stacksize, long);
1037 1205
1038 if (!cctx->sptr) 1206 if (!cctx->sptr)
1039 { 1207 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1208 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1209 _exit (EXIT_FAILURE);
1042 } 1210 }
1043 1211
1044 stack_start = cctx->sptr; 1212 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1213 stack_size = cctx->ssize;
1046 } 1214 }
1047 1215
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1221
1051 return cctx; 1222 return cctx;
1052} 1223}
1053 1224
… …
1056{ 1227{
1057 if (!cctx) 1228 if (!cctx)
1058 return; 1229 return;
1059 1230
1060 --cctx_count; 1231 --cctx_count;
1232 coro_destroy (&cctx->cctx);
1061 1233
1234 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr)
1236 {
1062#if CORO_USE_VALGRIND 1237 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1239 #endif
1065 1240
1066#if HAVE_MMAP 1241#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1242 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1243 munmap (cctx->sptr, cctx->ssize);
1069 else 1244 else
1070#endif 1245#endif
1071 Safefree (cctx->sptr); 1246 Safefree (cctx->sptr);
1247 }
1072 1248
1073 Safefree (cctx); 1249 Safefree (cctx);
1074} 1250}
1075 1251
1076/* wether this cctx should be destructed */ 1252/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1254
1079static coro_cctx * 1255static coro_cctx *
1080cctx_get (pTHX) 1256cctx_get (pTHX)
1081{ 1257{
1082 while (expect_true (cctx_first)) 1258 while (expect_true (cctx_first))
… …
1089 return cctx; 1265 return cctx;
1090 1266
1091 cctx_destroy (cctx); 1267 cctx_destroy (cctx);
1092 } 1268 }
1093 1269
1094 return cctx_new (); 1270 return cctx_new_run ();
1095} 1271}
1096 1272
1097static void 1273static void
1098cctx_put (coro_cctx *cctx) 1274cctx_put (coro_cctx *cctx)
1099{ 1275{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277
1100 /* free another cctx if overlimit */ 1278 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1279 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1280 {
1103 coro_cctx *first = cctx_first; 1281 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1282 cctx_first = first->next;
1105 --cctx_idle; 1283 --cctx_idle;
1106 1284
… …
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1296transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1297{
1120 if (expect_true (prev != next)) 1298 if (expect_true (prev != next))
1121 { 1299 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1300 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"); 1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1124 1302
1125 if (expect_false (next->flags & CF_RUNNING)) 1303 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"); 1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1127 1305
1128 if (expect_false (next->flags & CF_DESTROYED)) 1306 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"); 1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1130 1308
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1309#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) 1310 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif
1139 } 1313 }
1140} 1314}
1141 1315
1142/* always use the TRANSFER macro */ 1316/* always use the TRANSFER macro */
1143static void NOINLINE 1317static void NOINLINE
1144transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1319{
1146 dSTACKLEVEL; 1320 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1321
1149 /* sometimes transfer is only called to set idle_sp */ 1322 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1323 if (expect_false (!next))
1151 { 1324 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1325 ((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 */ 1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1154 } 1327 }
1155 else if (expect_true (prev != next)) 1328 else if (expect_true (prev != next))
1156 { 1329 {
1157 coro_cctx *prev__cctx; 1330 coro_cctx *prev__cctx;
1158 1331
1159 if (expect_false (prev->flags & CF_NEW)) 1332 if (expect_false (prev->flags & CF_NEW))
1160 { 1333 {
1161 /* create a new empty context */ 1334 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1335 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1336 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1337 prev->flags |= CF_RUNNING;
1165 } 1338 }
1166 1339
1167 prev->flags &= ~CF_RUNNING; 1340 prev->flags &= ~CF_RUNNING;
… …
1182 else 1355 else
1183 load_perl (aTHX_ next); 1356 load_perl (aTHX_ next);
1184 1357
1185 prev__cctx = prev->cctx; 1358 prev__cctx = prev->cctx;
1186 1359
1187 /* possibly "free" the cctx */ 1360 /* possibly untie and reuse the cctx */
1188 if (expect_true ( 1361 if (expect_true (
1189 prev__cctx->idle_sp == STACKLEVEL 1362 prev__cctx->idle_sp == (void *)stacklevel
1190 && !(prev__cctx->flags & CC_TRACE) 1363 && !(prev__cctx->flags & CC_TRACE)
1191 && !force_cctx 1364 && !force_cctx
1192 )) 1365 ))
1193 { 1366 {
1194 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1195 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1196 1369
1197 prev->cctx = 0; 1370 prev->cctx = 0;
1198 1371
1199 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1200 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1208 ++next->usecount; 1381 ++next->usecount;
1209 1382
1210 if (expect_true (!next->cctx)) 1383 if (expect_true (!next->cctx))
1211 next->cctx = cctx_get (aTHX); 1384 next->cctx = cctx_get (aTHX);
1212 1385
1213 has_throw = !!next->throw; 1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1214 1388
1215 if (expect_false (prev__cctx != next->cctx)) 1389 if (expect_false (prev__cctx != next->cctx))
1216 { 1390 {
1217 prev__cctx->top_env = PL_top_env; 1391 prev__cctx->top_env = PL_top_env;
1218 PL_top_env = next->cctx->top_env; 1392 PL_top_env = next->cctx->top_env;
1219 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1220 } 1394 }
1221 1395
1222 free_coro_mortal (aTHX); 1396 transfer_tail (aTHX);
1223 UNLOCK;
1224
1225 if (expect_false (has_throw))
1226 {
1227 struct coro *coro = SvSTATE (coro_current);
1228
1229 if (coro->throw)
1230 {
1231 SV *exception = coro->throw;
1232 coro->throw = 0;
1233 sv_setsv (ERRSV, exception);
1234 croak (0);
1235 }
1236 }
1237 } 1397 }
1238} 1398}
1239
1240struct transfer_args
1241{
1242 struct coro *prev, *next;
1243};
1244 1399
1245#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1246#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1247 1402
1248/** high level stuff ********************************************************/ 1403/** high level stuff ********************************************************/
… …
1268 1423
1269 if (coro->mainstack && coro->mainstack != main_mainstack) 1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1270 { 1425 {
1271 struct coro temp; 1426 struct coro temp;
1272 1427
1273 if (coro->flags & CF_RUNNING) 1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1274 croak ("FATAL: tried to destroy currently running coroutine");
1275 1429
1276 save_perl (aTHX_ &temp); 1430 save_perl (aTHX_ &temp);
1277 load_perl (aTHX_ coro); 1431 load_perl (aTHX_ coro);
1278 1432
1279 coro_destroy (aTHX_ coro); 1433 coro_destruct (aTHX_ coro);
1280 1434
1281 load_perl (aTHX_ &temp); 1435 load_perl (aTHX_ &temp);
1282 1436
1283 coro->slot = 0; 1437 coro->slot = 0;
1284 } 1438 }
… …
1330# define MGf_DUP 0 1484# define MGf_DUP 0
1331#endif 1485#endif
1332}; 1486};
1333 1487
1334static void 1488static void
1335prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1489prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1336{ 1490{
1337 ta->prev = SvSTATE (prev_sv); 1491 ta->prev = SvSTATE (prev_sv);
1338 ta->next = SvSTATE (next_sv); 1492 ta->next = SvSTATE (next_sv);
1339 TRANSFER_CHECK (*ta); 1493 TRANSFER_CHECK (*ta);
1340} 1494}
1341 1495
1342static void 1496static void
1343api_transfer (SV *prev_sv, SV *next_sv) 1497api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1344{ 1498{
1345 dTHX;
1346 struct transfer_args ta; 1499 struct coro_transfer_args ta;
1347 1500
1348 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1349 TRANSFER (ta, 1); 1502 TRANSFER (ta, 1);
1350} 1503}
1351 1504
… …
1368 1521
1369 return 0; 1522 return 0;
1370} 1523}
1371 1524
1372static int 1525static int
1373api_ready (SV *coro_sv) 1526api_ready (pTHX_ SV *coro_sv)
1374{ 1527{
1375 dTHX;
1376 struct coro *coro; 1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1377 1531
1378 if (SvROK (coro_sv)) 1532 if (SvROK (coro_sv))
1379 coro_sv = SvRV (coro_sv); 1533 coro_sv = SvRV (coro_sv);
1380 1534
1381 coro = SvSTATE (coro_sv); 1535 coro = SvSTATE (coro_sv);
… …
1384 return 0; 1538 return 0;
1385 1539
1386 coro->flags |= CF_READY; 1540 coro->flags |= CF_READY;
1387 1541
1388 LOCK; 1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546
1389 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1390 ++coro_nready; 1548 ++coro_nready;
1549
1391 UNLOCK; 1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1392 1570
1393 return 1; 1571 return 1;
1394} 1572}
1395 1573
1396static int 1574static int
1397api_is_ready (SV *coro_sv) 1575api_is_ready (pTHX_ SV *coro_sv)
1398{ 1576{
1399 dTHX;
1400 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1577 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1401} 1578}
1402 1579
1403static void 1580INLINE void
1404prepare_schedule (pTHX_ struct transfer_args *ta) 1581prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1405{ 1582{
1406 SV *prev_sv, *next_sv; 1583 SV *prev_sv, *next_sv;
1407 1584
1408 for (;;) 1585 for (;;)
1409 { 1586 {
… …
1434 /* cannot transfer to destroyed coros, skip and look for next */ 1611 /* cannot transfer to destroyed coros, skip and look for next */
1435 if (expect_false (ta->next->flags & CF_DESTROYED)) 1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1436 { 1613 {
1437 UNLOCK; 1614 UNLOCK;
1438 SvREFCNT_dec (next_sv); 1615 SvREFCNT_dec (next_sv);
1439 /* coro_nready is already taken care of by destroy */ 1616 /* coro_nready has already been taken care of by destroy */
1440 continue; 1617 continue;
1441 } 1618 }
1442 1619
1443 --coro_nready; 1620 --coro_nready;
1444 UNLOCK; 1621 UNLOCK;
… …
1447 1624
1448 /* free this only after the transfer */ 1625 /* free this only after the transfer */
1449 prev_sv = SvRV (coro_current); 1626 prev_sv = SvRV (coro_current);
1450 ta->prev = SvSTATE (prev_sv); 1627 ta->prev = SvSTATE (prev_sv);
1451 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1452 assert (ta->next->flags & CF_READY); 1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1453 ta->next->flags &= ~CF_READY; 1630 ta->next->flags &= ~CF_READY;
1454 SvRV_set (coro_current, next_sv); 1631 SvRV_set (coro_current, next_sv);
1455 1632
1456 LOCK; 1633 LOCK;
1457 free_coro_mortal (aTHX); 1634 free_coro_mortal (aTHX);
1458 coro_mortal = prev_sv; 1635 coro_mortal = prev_sv;
1459 UNLOCK; 1636 UNLOCK;
1460} 1637}
1461 1638
1462static void 1639INLINE void
1463prepare_cede (pTHX_ struct transfer_args *ta) 1640prepare_cede (pTHX_ struct coro_transfer_args *ta)
1464{ 1641{
1465 api_ready (coro_current); 1642 api_ready (aTHX_ coro_current);
1466 prepare_schedule (aTHX_ ta); 1643 prepare_schedule (aTHX_ ta);
1467} 1644}
1468 1645
1646INLINE void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{
1649 SV *prev = SvRV (coro_current);
1650
1651 if (coro_nready)
1652 {
1653 prepare_schedule (aTHX_ ta);
1654 api_ready (aTHX_ prev);
1655 }
1656 else
1657 prepare_nop (aTHX_ ta);
1658}
1659
1660static void
1661api_schedule (pTHX)
1662{
1663 struct coro_transfer_args ta;
1664
1665 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1);
1667}
1668
1469static int 1669static int
1470prepare_cede_notself (pTHX_ struct transfer_args *ta) 1670api_cede (pTHX)
1471{ 1671{
1472 if (coro_nready) 1672 struct coro_transfer_args ta;
1473 { 1673
1474 SV *prev = SvRV (coro_current);
1475 prepare_schedule (aTHX_ ta); 1674 prepare_cede (aTHX_ &ta);
1476 api_ready (prev); 1675
1676 if (expect_true (ta.prev != ta.next))
1677 {
1678 TRANSFER (ta, 1);
1477 return 1; 1679 return 1;
1478 } 1680 }
1479 else 1681 else
1480 return 0; 1682 return 0;
1481} 1683}
1482 1684
1483static void
1484api_schedule (void)
1485{
1486 dTHX;
1487 struct transfer_args ta;
1488
1489 prepare_schedule (aTHX_ &ta);
1490 TRANSFER (ta, 1);
1491}
1492
1493static int 1685static int
1494api_cede (void) 1686api_cede_notself (pTHX)
1495{ 1687{
1496 dTHX; 1688 if (coro_nready)
1689 {
1497 struct transfer_args ta; 1690 struct coro_transfer_args ta;
1498 1691
1499 prepare_cede (aTHX_ &ta); 1692 prepare_cede_notself (aTHX_ &ta);
1500
1501 if (expect_true (ta.prev != ta.next))
1502 {
1503 TRANSFER (ta, 1); 1693 TRANSFER (ta, 1);
1504 return 1; 1694 return 1;
1505 } 1695 }
1506 else 1696 else
1507 return 0; 1697 return 0;
1508} 1698}
1509 1699
1510static int 1700static void
1511api_cede_notself (void)
1512{
1513 dTHX;
1514 struct transfer_args ta;
1515
1516 if (prepare_cede_notself (aTHX_ &ta))
1517 {
1518 TRANSFER (ta, 1);
1519 return 1;
1520 }
1521 else
1522 return 0;
1523}
1524
1525static void
1526api_trace (SV *coro_sv, int flags) 1701api_trace (pTHX_ SV *coro_sv, int flags)
1527{ 1702{
1528 dTHX;
1529 struct coro *coro = SvSTATE (coro_sv); 1703 struct coro *coro = SvSTATE (coro_sv);
1530 1704
1531 if (flags & CC_TRACE) 1705 if (flags & CC_TRACE)
1532 { 1706 {
1533 if (!coro->cctx) 1707 if (!coro->cctx)
1534 coro->cctx = cctx_new (); 1708 coro->cctx = cctx_new_run ();
1535 else if (!(coro->cctx->flags & CC_TRACE)) 1709 else if (!(coro->cctx->flags & CC_TRACE))
1536 croak ("cannot enable tracing on coroutine with custom stack"); 1710 croak ("cannot enable tracing on coroutine with custom stack,");
1537 1711
1538 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1539 } 1713 }
1540 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1541 { 1715 {
… …
1546 else 1720 else
1547 coro->slot->runops = RUNOPS_DEFAULT; 1721 coro->slot->runops = RUNOPS_DEFAULT;
1548 } 1722 }
1549} 1723}
1550 1724
1725/*****************************************************************************/
1726/* PerlIO::cede */
1727
1728typedef struct
1729{
1730 PerlIOBuf base;
1731 NV next, every;
1732} PerlIOCede;
1733
1734static IV
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every;
1741
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743}
1744
1745static SV *
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749
1750 return newSVnv (self->every);
1751}
1752
1753static IV
1754PerlIOCede_flush (pTHX_ PerlIO *f)
1755{
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime ();
1758
1759 if (now >= self->next)
1760 {
1761 api_cede (aTHX);
1762 self->next = now + self->every;
1763 }
1764
1765 return PerlIOBuf_flush (aTHX_ f);
1766}
1767
1768static PerlIO_funcs PerlIO_cede =
1769{
1770 sizeof(PerlIO_funcs),
1771 "cede",
1772 sizeof(PerlIOCede),
1773 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1774 PerlIOCede_pushed,
1775 PerlIOBuf_popped,
1776 PerlIOBuf_open,
1777 PerlIOBase_binmode,
1778 PerlIOCede_getarg,
1779 PerlIOBase_fileno,
1780 PerlIOBuf_dup,
1781 PerlIOBuf_read,
1782 PerlIOBuf_unread,
1783 PerlIOBuf_write,
1784 PerlIOBuf_seek,
1785 PerlIOBuf_tell,
1786 PerlIOBuf_close,
1787 PerlIOCede_flush,
1788 PerlIOBuf_fill,
1789 PerlIOBase_eof,
1790 PerlIOBase_error,
1791 PerlIOBase_clearerr,
1792 PerlIOBase_setlinebuf,
1793 PerlIOBuf_get_base,
1794 PerlIOBuf_bufsiz,
1795 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt,
1798};
1799
1800/*****************************************************************************/
1801
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP *
1813pp_restore (pTHX)
1814{
1815 dSP;
1816
1817 PUSHMARK (SP);
1818
1819 EXTEND (SP, 3);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826}
1827
1828static void
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833
1834static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1836{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1838
1839 frame->prepare = slf_prepare_set_stacklevel;
1840 frame->check = slf_check_nop;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843
1844static void
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 {
1903 /* first iteration */
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908
1909 /* do a quick consistency check on the "function" object, and if it isn't */
1910 /* for us, divert to the real entersub */
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1912 return PL_ppaddr[OP_ENTERSUB](aTHX);
1913
1914 /* pop args */
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 {
1919 /* ampersand-form of call, use @_ instead of stack */
1920 AV *av = GvAV (PL_defgv);
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 }
1924
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, GvCV (gv), arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 {
1955 if (sp == bot)
1956 XPUSHs (&PL_sv_undef);
1957
1958 SP = bot + 1;
1959 }
1960
1961 PUTBACK;
1962 }
1963
1964 return NORMAL;
1965}
1966
1967static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1969{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1971
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998}
1999
2000/*****************************************************************************/
2001
2002static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2004{
2005 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0];
2007
2008 if (SvIVX (count_sv) > 0)
2009 {
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2011 return 0;
2012 }
2013 else
2014 {
2015 int i;
2016 /* if we were woken up but can't down, we look through the whole */
2017 /* waiters list and only add us if we aren't in there already */
2018 /* this avoids some degenerate memory usage cases */
2019
2020 for (i = 1; i <= AvFILLp (av); ++i)
2021 if (AvARRAY (av)[i] == SvRV (coro_current))
2022 return 1;
2023
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1;
2026 }
2027}
2028
2029static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{
2032 AV *av = (AV *)SvRV (arg [0]);
2033
2034 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 {
2036 frame->data = (void *)av;
2037 frame->prepare = prepare_nop;
2038 }
2039 else
2040 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule;
2045 }
2046
2047 frame->check = slf_check_semaphore_down;
2048
2049}
2050
2051/*****************************************************************************/
2052
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2054
2055/* create a closure from XS, returns a code reference */
2056/* the arg can be accessed via GENSUB_ARG from the callback */
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{
2061 CV *cv = (CV *)NEWSV (0, 0);
2062
2063 sv_upgrade ((SV *)cv, SVt_PVCV);
2064
2065 CvANON_on (cv);
2066 CvISXSUB_on (cv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069
2070 return newRV_noinc ((SV *)cv);
2071}
2072
2073/*****************************************************************************/
2074
1551MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1552 2076
1553PROTOTYPES: DISABLE 2077PROTOTYPES: DISABLE
1554 2078
1555BOOT: 2079BOOT:
1556{ 2080{
1557#ifdef USE_ITHREADS 2081#ifdef USE_ITHREADS
1558 MUTEX_INIT (&coro_mutex); 2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT;
2085# endif
1559#endif 2086#endif
1560 BOOT_PAGESIZE; 2087 BOOT_PAGESIZE;
1561 2088
1562 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1563 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1564 2091
1565 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1566 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2093 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1567 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2094 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1568 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1569 2095
1570 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2096 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1571 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2097 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1572 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2098 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1573 2099
… …
1582 main_top_env = PL_top_env; 2108 main_top_env = PL_top_env;
1583 2109
1584 while (main_top_env->je_prev) 2110 while (main_top_env->je_prev)
1585 main_top_env = main_top_env->je_prev; 2111 main_top_env = main_top_env->je_prev;
1586 2112
1587 coroapi.ver = CORO_API_VERSION; 2113 coroapi.ver = CORO_API_VERSION;
1588 coroapi.rev = CORO_API_REVISION; 2114 coroapi.rev = CORO_API_REVISION;
2115
1589 coroapi.transfer = api_transfer; 2116 coroapi.transfer = api_transfer;
2117
2118 coroapi.sv_state = SvSTATE_;
2119 coroapi.execute_slf = api_execute_slf;
2120 coroapi.prepare_nop = prepare_nop;
2121 coroapi.prepare_schedule = prepare_schedule;
2122 coroapi.prepare_cede = prepare_cede;
2123 coroapi.prepare_cede_notself = prepare_cede_notself;
2124
2125 {
2126 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2127
2128 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 }
1590 2133
1591 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1592} 2135}
1593 2136
1594SV * 2137SV *
… …
1618 av_push (coro->args, newSVsv (ST (i))); 2161 av_push (coro->args, newSVsv (ST (i)));
1619} 2162}
1620 OUTPUT: 2163 OUTPUT:
1621 RETVAL 2164 RETVAL
1622 2165
1623# these not obviously related functions are all rolled into the same xs
1624# function to increase chances that they all will call transfer with the same
1625# stack offset
1626void 2166void
1627_set_stacklevel (...) 2167_set_stacklevel (...)
1628 ALIAS: 2168 CODE:
1629 Coro::State::transfer = 1 2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1630 Coro::schedule = 2
1631 Coro::cede = 3
1632 Coro::cede_notself = 4
1633 CODE:
1634{
1635 struct transfer_args ta;
1636 2170
1637 PUTBACK; 2171void
1638 switch (ix) 2172transfer (...)
1639 { 2173 PROTOTYPE: $$
1640 case 0: 2174 CODE:
1641 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1642 ta.next = 0;
1643 break;
1644
1645 case 1:
1646 if (items != 2)
1647 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1648
1649 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1650 break;
1651
1652 case 2:
1653 prepare_schedule (aTHX_ &ta);
1654 break;
1655
1656 case 3:
1657 prepare_cede (aTHX_ &ta);
1658 break;
1659
1660 case 4:
1661 if (!prepare_cede_notself (aTHX_ &ta))
1662 XSRETURN_EMPTY;
1663
1664 break;
1665 }
1666 SPAGAIN;
1667
1668 BARRIER;
1669 PUTBACK;
1670 TRANSFER (ta, 0);
1671 SPAGAIN; /* might be the sp of a different coroutine now */
1672 /* be extra careful not to ever do anything after TRANSFER */
1673}
1674 2176
1675bool 2177bool
1676_destroy (SV *coro_sv) 2178_destroy (SV *coro_sv)
1677 CODE: 2179 CODE:
1678 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1679 OUTPUT: 2181 OUTPUT:
1680 RETVAL 2182 RETVAL
1681 2183
1682void 2184void
1683_exit (code) 2185_exit (int code)
1684 int code
1685 PROTOTYPE: $ 2186 PROTOTYPE: $
1686 CODE: 2187 CODE:
1687 _exit (code); 2188 _exit (code);
1688 2189
1689int 2190int
1690cctx_stacksize (int new_stacksize = 0) 2191cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$
1691 CODE: 2193 CODE:
1692 RETVAL = coro_stacksize; 2194 RETVAL = cctx_stacksize;
1693 if (new_stacksize) 2195 if (new_stacksize)
2196 {
1694 coro_stacksize = new_stacksize; 2197 cctx_stacksize = new_stacksize;
2198 ++cctx_gen;
2199 }
1695 OUTPUT: 2200 OUTPUT:
1696 RETVAL 2201 RETVAL
1697 2202
1698int 2203int
2204cctx_max_idle (int max_idle = 0)
2205 PROTOTYPE: ;$
2206 CODE:
2207 RETVAL = cctx_max_idle;
2208 if (max_idle > 1)
2209 cctx_max_idle = max_idle;
2210 OUTPUT:
2211 RETVAL
2212
2213int
1699cctx_count () 2214cctx_count ()
2215 PROTOTYPE:
1700 CODE: 2216 CODE:
1701 RETVAL = cctx_count; 2217 RETVAL = cctx_count;
1702 OUTPUT: 2218 OUTPUT:
1703 RETVAL 2219 RETVAL
1704 2220
1705int 2221int
1706cctx_idle () 2222cctx_idle ()
2223 PROTOTYPE:
1707 CODE: 2224 CODE:
1708 RETVAL = cctx_idle; 2225 RETVAL = cctx_idle;
1709 OUTPUT: 2226 OUTPUT:
1710 RETVAL 2227 RETVAL
1711 2228
1712void 2229void
1713list () 2230list ()
2231 PROTOTYPE:
1714 PPCODE: 2232 PPCODE:
1715{ 2233{
1716 struct coro *coro; 2234 struct coro *coro;
1717 for (coro = coro_first; coro; coro = coro->next) 2235 for (coro = coro_first; coro; coro = coro->next)
1718 if (coro->hv) 2236 if (coro->hv)
… …
1723call (Coro::State coro, SV *coderef) 2241call (Coro::State coro, SV *coderef)
1724 ALIAS: 2242 ALIAS:
1725 eval = 1 2243 eval = 1
1726 CODE: 2244 CODE:
1727{ 2245{
1728 if (coro->mainstack) 2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1729 { 2247 {
1730 struct coro temp; 2248 struct coro temp;
1731 2249
1732 if (!(coro->flags & CF_RUNNING)) 2250 if (!(coro->flags & CF_RUNNING))
1733 { 2251 {
… …
1777 RETVAL = boolSV (coro->flags & ix); 2295 RETVAL = boolSV (coro->flags & ix);
1778 OUTPUT: 2296 OUTPUT:
1779 RETVAL 2297 RETVAL
1780 2298
1781void 2299void
2300throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$
2302 CODE:
2303 SvREFCNT_dec (self->throw);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2305
2306void
1782api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags
1783 2310
1784SV * 2311SV *
1785has_stack (Coro::State coro) 2312has_cctx (Coro::State coro)
1786 PROTOTYPE: $ 2313 PROTOTYPE: $
1787 CODE: 2314 CODE:
1788 RETVAL = boolSV (!!coro->cctx); 2315 RETVAL = boolSV (!!coro->cctx);
1789 OUTPUT: 2316 OUTPUT:
1790 RETVAL 2317 RETVAL
… …
1795 CODE: 2322 CODE:
1796 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2323 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1797 OUTPUT: 2324 OUTPUT:
1798 RETVAL 2325 RETVAL
1799 2326
1800IV 2327UV
1801rss (Coro::State coro) 2328rss (Coro::State coro)
1802 PROTOTYPE: $ 2329 PROTOTYPE: $
1803 ALIAS: 2330 ALIAS:
1804 usecount = 1 2331 usecount = 1
1805 CODE: 2332 CODE:
… …
1811 OUTPUT: 2338 OUTPUT:
1812 RETVAL 2339 RETVAL
1813 2340
1814void 2341void
1815force_cctx () 2342force_cctx ()
2343 PROTOTYPE:
1816 CODE: 2344 CODE:
1817 struct coro *coro = SvSTATE (coro_current); 2345 struct coro *coro = SvSTATE (coro_current);
1818 coro->cctx->idle_sp = 0; 2346 coro->cctx->idle_sp = 0;
1819 2347
2348void
2349swap_defsv (Coro::State self)
2350 PROTOTYPE: $
2351 ALIAS:
2352 swap_defav = 1
2353 CODE:
2354 if (!self->slot)
2355 croak ("cannot swap state with coroutine that has no saved state,");
2356 else
2357 {
2358 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360
2361 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 }
2363
1820MODULE = Coro::State PACKAGE = Coro 2364MODULE = Coro::State PACKAGE = Coro
1821 2365
1822BOOT: 2366BOOT:
1823{ 2367{
1824 int i; 2368 int i;
1825 2369
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1826 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1827 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1828 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1829 2373
1830 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1831 SvREADONLY_on (coro_current); 2375 SvREADONLY_on (coro_current);
1832 2376
1833 coro_stash = gv_stashpv ("Coro", TRUE); 2377 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1841 2385
1842 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1843 coro_ready[i] = newAV (); 2387 coro_ready[i] = newAV ();
1844 2388
1845 { 2389 {
1846 SV *sv = perl_get_sv ("Coro::API", TRUE); 2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1847 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1848 2391
1849 coroapi.schedule = api_schedule; 2392 coroapi.schedule = api_schedule;
1850 coroapi.cede = api_cede; 2393 coroapi.cede = api_cede;
1851 coroapi.cede_notself = api_cede_notself; 2394 coroapi.cede_notself = api_cede_notself;
1852 coroapi.ready = api_ready; 2395 coroapi.ready = api_ready;
1853 coroapi.is_ready = api_is_ready; 2396 coroapi.is_ready = api_is_ready;
1854 coroapi.nready = &coro_nready; 2397 coroapi.nready = coro_nready;
1855 coroapi.current = coro_current; 2398 coroapi.current = coro_current;
1856 2399
1857 GCoroAPI = &coroapi; 2400 GCoroAPI = &coroapi;
1858 sv_setiv (sv, (IV)&coroapi); 2401 sv_setiv (sv, (IV)&coroapi);
1859 SvREADONLY_on (sv); 2402 SvREADONLY_on (sv);
1860 } 2403 }
1861} 2404}
2405
2406void
2407schedule (...)
2408 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2410
2411void
2412cede (...)
2413 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2415
2416void
2417cede_notself (...)
2418 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1862 2420
1863void 2421void
1864_set_current (SV *current) 2422_set_current (SV *current)
1865 PROTOTYPE: $ 2423 PROTOTYPE: $
1866 CODE: 2424 CODE:
1867 SvREFCNT_dec (SvRV (coro_current)); 2425 SvREFCNT_dec (SvRV (coro_current));
1868 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2426 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2427
2428void
2429_set_readyhook (SV *hook)
2430 PROTOTYPE: $
2431 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
1869 2436
1870int 2437int
1871prio (Coro::State coro, int newprio = 0) 2438prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$
1872 ALIAS: 2440 ALIAS:
1873 nice = 1 2441 nice = 1
1874 CODE: 2442 CODE:
1875{ 2443{
1876 RETVAL = coro->prio; 2444 RETVAL = coro->prio;
… …
1891 2459
1892SV * 2460SV *
1893ready (SV *self) 2461ready (SV *self)
1894 PROTOTYPE: $ 2462 PROTOTYPE: $
1895 CODE: 2463 CODE:
1896 RETVAL = boolSV (api_ready (self)); 2464 RETVAL = boolSV (api_ready (aTHX_ self));
1897 OUTPUT: 2465 OUTPUT:
1898 RETVAL 2466 RETVAL
1899 2467
1900int 2468int
1901nready (...) 2469nready (...)
… …
1903 CODE: 2471 CODE:
1904 RETVAL = coro_nready; 2472 RETVAL = coro_nready;
1905 OUTPUT: 2473 OUTPUT:
1906 RETVAL 2474 RETVAL
1907 2475
1908void
1909throw (Coro::State self, SV *throw = &PL_sv_undef)
1910 PROTOTYPE: $;$
1911 CODE:
1912 SvREFCNT_dec (self->throw);
1913 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1914
1915void
1916swap_defsv (Coro::State self)
1917 PROTOTYPE: $
1918 ALIAS:
1919 swap_defav = 1
1920 CODE:
1921 if (!self->slot)
1922 croak ("cannot swap state with coroutine that has no saved state");
1923 else
1924 {
1925 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1926 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1927
1928 SV *tmp = *src; *src = *dst; *dst = tmp;
1929 }
1930
1931# for async_pool speedup 2476# for async_pool speedup
1932void 2477void
1933_pool_1 (SV *cb) 2478_pool_1 (SV *cb)
1934 CODE: 2479 CODE:
1935{ 2480{
… …
1940 AV *invoke_av; 2485 AV *invoke_av;
1941 int i, len; 2486 int i, len;
1942 2487
1943 if (!invoke) 2488 if (!invoke)
1944 { 2489 {
1945 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
1946 croak ("\3async_pool terminate\2\n"); 2493 croak ("\3async_pool terminate\2\n");
1947 } 2494 }
1948 2495
1949 SvREFCNT_dec (coro->saved_deffh); 2496 SvREFCNT_dec (coro->saved_deffh);
1950 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1951 2498
1952 hv_store (hv, "desc", sizeof ("desc") - 1, 2499 hv_store (hv, "desc", sizeof ("desc") - 1,
1953 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1954 2501
1955 invoke_av = (AV *)SvRV (invoke); 2502 invoke_av = (AV *)SvRV (invoke);
… …
1959 2506
1960 if (len > 0) 2507 if (len > 0)
1961 { 2508 {
1962 av_fill (defav, len - 1); 2509 av_fill (defav, len - 1);
1963 for (i = 0; i < len; ++i) 2510 for (i = 0; i < len; ++i)
1964 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1965 } 2512 }
1966
1967 SvREFCNT_dec (invoke);
1968} 2513}
1969 2514
1970void 2515void
1971_pool_2 (SV *cb) 2516_pool_2 (SV *cb)
1972 CODE: 2517 CODE:
… …
1976 sv_setsv (cb, &PL_sv_undef); 2521 sv_setsv (cb, &PL_sv_undef);
1977 2522
1978 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1979 coro->saved_deffh = 0; 2524 coro->saved_deffh = 0;
1980 2525
1981 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1982 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1983 { 2528 {
1984 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
1985 croak ("\3async_pool terminate\2\n"); 2532 croak ("\3async_pool terminate\2\n");
1986 } 2533 }
1987 2534
1988 av_clear (GvAV (PL_defgv)); 2535 av_clear (GvAV (PL_defgv));
1989 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1990 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1991 2538
1992 coro->prio = 0; 2539 coro->prio = 0;
1993 2540
1994 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1995 api_trace (coro_current, 0); 2542 api_trace (aTHX_ coro_current, 0);
1996 2543
1997 av_push (av_async_pool, newSVsv (coro_current)); 2544 av_push (av_async_pool, newSVsv (coro_current));
1998} 2545}
1999 2546
2000 2547
2001MODULE = Coro::State PACKAGE = Coro::AIO 2548MODULE = Coro::State PACKAGE = Coro::AIO
2002 2549
2003SV * 2550void
2004_get_state () 2551_get_state (SV *self)
2552 PROTOTYPE: $
2005 CODE: 2553 PPCODE:
2006{ 2554{
2007 struct io_state *data; 2555 AV *defav = GvAV (PL_defgv);
2008 2556 AV *av = newAV ();
2557 int i;
2009 RETVAL = newSV (sizeof (struct io_state)); 2558 SV *data_sv = newSV (sizeof (struct io_state));
2010 data = (struct io_state *)SvPVX (RETVAL); 2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2011 SvCUR_set (RETVAL, sizeof (struct io_state)); 2560 SvCUR_set (data_sv, sizeof (struct io_state));
2012 SvPOK_only (RETVAL); 2561 SvPOK_only (data_sv);
2013 2562
2014 data->errorno = errno; 2563 data->errorno = errno;
2015 data->laststype = PL_laststype; 2564 data->laststype = PL_laststype;
2016 data->laststatval = PL_laststatval; 2565 data->laststatval = PL_laststatval;
2017 data->statcache = PL_statcache; 2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2572
2573 av_push (av, data_sv);
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2018} 2578}
2019 OUTPUT:
2020 RETVAL
2021 2579
2022void 2580void
2023_set_state (char *data_) 2581_set_state (SV *state)
2024 PROTOTYPE: $ 2582 PROTOTYPE: $
2025 CODE: 2583 PPCODE:
2026{ 2584{
2027 struct io_state *data = (void *)data_; 2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2028 2588
2029 errno = data->errorno; 2589 errno = data->errorno;
2030 PL_laststype = data->laststype; 2590 PL_laststype = data->laststype;
2031 PL_laststatval = data->laststatval; 2591 PL_laststatval = data->laststatval;
2032 PL_statcache = data->statcache; 2592 PL_statcache = data->statcache;
2033}
2034 2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 {
2620 PUSHMARK (SP);
2621 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2623 SPAGAIN;
2624 }
2625
2626 --incede;
2627}
2628
2629
2630MODULE = Coro::State PACKAGE = PerlIO::cede
2631
2632BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634
2635MODULE = Coro::State PACKAGE = Coro::Semaphore
2636
2637SV *
2638new (SV *klass, SV *count_ = 0)
2639 CODE:
2640{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2642 AV *av = newAV ();
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2645}
2646 OUTPUT:
2647 RETVAL
2648
2649SV *
2650count (SV *self)
2651 CODE:
2652 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2653 OUTPUT:
2654 RETVAL
2655
2656void
2657up (SV *self, int adjust = 1)
2658 ALIAS:
2659 adjust = 1
2660 CODE:
2661{
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687
2688void
2689down (SV *self)
2690 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2692
2693void
2694try (SV *self)
2695 PPCODE:
2696{
2697 AV *av = (AV *)SvRV (self);
2698 SV *count_sv = AvARRAY (av)[0];
2699 IV count = SvIVX (count_sv);
2700
2701 if (count > 0)
2702 {
2703 --count;
2704 SvIVX (count_sv) = count;
2705 XSRETURN_YES;
2706 }
2707 else
2708 XSRETURN_NO;
2709}
2710
2711void
2712waiters (SV *self)
2713 CODE:
2714{
2715 AV *av = (AV *)SvRV (self);
2716
2717 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2719 else
2720 {
2721 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1);
2723 for (i = 1; i <= AvFILLp (av); ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i]));
2725 }
2726}
2727

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines