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Comparing Coro/Coro/State.xs (file contents):
Revision 1.222 by root, Sun Jan 20 10:22:07 2008 UTC vs.
Revision 1.294 by root, Tue Nov 18 08:31:03 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
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
77/* 5.8.7 */ 104/* 5.8.7 */
78#ifndef SvRV_set 105#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 107#endif
81 108
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
92#endif 111#endif
93 112
94#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 120#endif
102 121
103/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
105#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
106#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
107 131
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 133
110#if __GNUC__ >= 3 134#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
114#else 138#else
115# define attribute(x) 139# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
118#endif 142#endif
119 143
120#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
122 146
123#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
124 148
125#include "CoroAPI.h" 149#include "CoroAPI.h"
126 150
127#ifdef USE_ITHREADS 151#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 152# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 153static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 154# endif
155#endif
135 156
136/* helper storage struct for Coro::AIO */ 157static double (*nvtime)(); /* so why doesn't it take void? */
137struct io_state
138{
139 int errorno;
140 I32 laststype;
141 int laststatval;
142 Stat_t statcache;
143};
144 158
159/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX);
162
163static U32 cctx_gen;
145static size_t coro_stacksize = CORO_STACKSIZE; 164static size_t cctx_stacksize = CORO_STACKSIZE;
146static struct CoroAPI coroapi; 165static struct CoroAPI coroapi;
147static AV *main_mainstack; /* used to differentiate between $main and others */ 166static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env; 167static JMPENV *main_top_env;
149static HV *coro_state_stash, *coro_stash; 168static HV *coro_state_stash, *coro_stash;
150static volatile SV *coro_mortal; /* will be freed after next transfer */ 169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
151 170
152static GV *irsgv; /* $/ */ 171static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */ 172static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook; 173static SV *rv_diehook;
155static SV *rv_warnhook; 174static SV *rv_warnhook;
… …
157 176
158/* async_pool helper stuff */ 177/* async_pool helper stuff */
159static SV *sv_pool_rss; 178static SV *sv_pool_rss;
160static SV *sv_pool_size; 179static SV *sv_pool_size;
161static AV *av_async_pool; 180static AV *av_async_pool;
181
182/* Coro::AnyEvent */
183static SV *sv_activity;
162 184
163static struct coro_cctx *cctx_first; 185static struct coro_cctx *cctx_first;
164static int cctx_count, cctx_idle; 186static int cctx_count, cctx_idle;
165 187
166enum { 188enum {
… …
171 CC_TRACE_LINE = 0x10, /* trace each statement */ 193 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 194 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173}; 195};
174 196
175/* this is a structure representing a c-level coroutine */ 197/* this is a structure representing a c-level coroutine */
176typedef struct coro_cctx { 198typedef struct coro_cctx
199{
177 struct coro_cctx *next; 200 struct coro_cctx *next;
178 201
179 /* the stack */ 202 /* the stack */
180 void *sptr; 203 void *sptr;
181 size_t ssize; 204 size_t ssize;
… …
184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
186 JMPENV *top_env; 209 JMPENV *top_env;
187 coro_context cctx; 210 coro_context cctx;
188 211
212 U32 gen;
189#if CORO_USE_VALGRIND 213#if CORO_USE_VALGRIND
190 int valgrind_id; 214 int valgrind_id;
191#endif 215#endif
192 unsigned char flags; 216 unsigned char flags;
193} coro_cctx; 217} coro_cctx;
… …
198 CF_NEW = 0x0004, /* has never been switched to */ 222 CF_NEW = 0x0004, /* has never been switched to */
199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200}; 224};
201 225
202/* the structure where most of the perl state is stored, overlaid on the cxstack */ 226/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct { 227typedef struct
228{
204 SV *defsv; 229 SV *defsv;
205 AV *defav; 230 AV *defav;
206 SV *errsv; 231 SV *errsv;
207 SV *irsgv; 232 SV *irsgv;
208#define VAR(name,type) type name; 233#define VAR(name,type) type name;
… …
212 237
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214 239
215/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
216struct coro { 241struct coro {
217 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the C coroutine allocated to this perl coroutine, if any */
218 coro_cctx *cctx; 243 coro_cctx *cctx;
219 244
220 /* process data */ 245 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */
221 AV *mainstack; 247 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
223 249
224 AV *args; /* data associated with this coroutine (initial args) */ 250 AV *args; /* data associated with this coroutine (initial args) */
225 int refcnt; /* coroutines are refcounted, yes */ 251 int refcnt; /* coroutines are refcounted, yes */
226 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
228 255
229 /* statistics */ 256 /* statistics */
230 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
231 258
232 /* coro process data */ 259 /* coro process data */
… …
240 struct coro *next, *prev; 267 struct coro *next, *prev;
241}; 268};
242 269
243typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
244typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
245 278
246/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
247 280
248#define PRIO_MAX 3 281#define PRIO_MAX 3
249#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
252#define PRIO_IDLE -3 285#define PRIO_IDLE -3
253#define PRIO_MIN -4 286#define PRIO_MIN -4
254 287
255/* for Coro.pm */ 288/* for Coro.pm */
256static SV *coro_current; 289static SV *coro_current;
290static SV *coro_readyhook;
257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258static int coro_nready;
259static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
260 294
261/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
262 296
263static SV * 297static SV *
264coro_get_sv (pTHX_ const char *name, int create) 298coro_get_sv (pTHX_ const char *name, int create)
265{ 299{
266#if PERL_VERSION_ATLEAST (5,9,0) 300#if PERL_VERSION_ATLEAST (5,10,0)
267 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
268 get_sv (name, create); 302 get_sv (name, create);
269#endif 303#endif
270 return get_sv (name, create); 304 return get_sv (name, create);
271} 305}
272 306
273static AV * 307static AV *
274coro_get_av (pTHX_ const char *name, int create) 308coro_get_av (pTHX_ const char *name, int create)
275{ 309{
276#if PERL_VERSION_ATLEAST (5,9,0) 310#if PERL_VERSION_ATLEAST (5,10,0)
277 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
278 get_av (name, create); 312 get_av (name, create);
279#endif 313#endif
280 return get_av (name, create); 314 return get_av (name, create);
281} 315}
282 316
283static HV * 317static HV *
284coro_get_hv (pTHX_ const char *name, int create) 318coro_get_hv (pTHX_ const char *name, int create)
285{ 319{
286#if PERL_VERSION_ATLEAST (5,9,0) 320#if PERL_VERSION_ATLEAST (5,10,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_hv (name, create); 322 get_hv (name, create);
289#endif 323#endif
290 return get_hv (name, create); 324 return get_hv (name, create);
291} 325}
… …
296 AV *padlist = CvPADLIST (cv); 330 AV *padlist = CvPADLIST (cv);
297 AV *newpadlist, *newpad; 331 AV *newpadlist, *newpad;
298 332
299 newpadlist = newAV (); 333 newpadlist = newAV ();
300 AvREAL_off (newpadlist); 334 AvREAL_off (newpadlist);
301#if PERL_VERSION_ATLEAST (5,9,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
302 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303#else 337#else
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305#endif 339#endif
306 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307 --AvFILLp (padlist); 341 --AvFILLp (padlist);
308 342
309 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310 av_store (newpadlist, 1, (SV *)newpad); 344 av_store (newpadlist, 1, (SV *)newpad);
311 345
312 return newpadlist; 346 return newpadlist;
313} 347}
314 348
… …
344 378
345 /* casting is fun. */ 379 /* casting is fun. */
346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347 free_padlist (aTHX_ padlist); 381 free_padlist (aTHX_ padlist);
348 382
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384
349 return 0; 385 return 0;
350} 386}
351 387
352#define CORO_MAGIC_type_cv PERL_MAGIC_ext 388#define CORO_MAGIC_type_cv 26
353#define CORO_MAGIC_type_state PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
354 390
355static MGVTBL coro_cv_vtbl = { 391static MGVTBL coro_cv_vtbl = {
356 0, 0, 0, 0, 392 0, 0, 0, 0,
357 coro_cv_free 393 coro_cv_free
358}; 394};
359 395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
360#define CORO_MAGIC(sv,type) \ 401#define CORO_MAGIC(sv, type) \
361 SvMAGIC (sv) \ 402 (expect_true (SvMAGIC (sv)) \
362 ? SvMAGIC (sv)->mg_type == type \ 403 ? CORO_MAGIC_NN (sv, type) \
363 ? SvMAGIC (sv) \
364 : mg_find (sv, type) \
365 : 0 404 : 0)
366 405
367#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
368#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
369 408
370static struct coro * 409INLINE struct coro *
371SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
372{ 411{
373 HV *stash; 412 HV *stash;
374 MAGIC *mg; 413 MAGIC *mg;
375 414
… …
390 mg = CORO_MAGIC_state (coro); 429 mg = CORO_MAGIC_state (coro);
391 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
392} 431}
393 432
394#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
395 438
396/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
397static void 440static void
398get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
399{ 442{
… …
403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405 else 448 else
406 { 449 {
407#if CORO_PREFER_PERL_FUNCTIONS 450#if CORO_PREFER_PERL_FUNCTIONS
408 /* this is probably cleaner, but also slower? */ 451 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */
409 CV *cp = Perl_cv_clone (cv); 453 CV *cp = Perl_cv_clone (cv);
410 CvPADLIST (cv) = CvPADLIST (cp); 454 CvPADLIST (cv) = CvPADLIST (cp);
411 CvPADLIST (cp) = 0; 455 CvPADLIST (cp) = 0;
412 SvREFCNT_dec (cp); 456 SvREFCNT_dec (cp);
413#else 457#else
… …
465 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
466 } 510 }
467 511
468 PUTBACK; 512 PUTBACK;
469 } 513 }
514
515 slf_frame = c->slf_frame;
516 coro_throw = c->throw;
470} 517}
471 518
472static void 519static void
473save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
474{ 521{
522 c->throw = coro_throw;
523 c->slf_frame = slf_frame;
524
475 { 525 {
476 dSP; 526 dSP;
477 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
478 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
479 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
497 547
498 if (expect_true (CvDEPTH (cv))) 548 if (expect_true (CvDEPTH (cv)))
499 { 549 {
500 EXTEND (SP, 3); 550 EXTEND (SP, 3);
501 PUSHs ((SV *)CvPADLIST (cv)); 551 PUSHs ((SV *)CvPADLIST (cv));
502 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503 PUSHs ((SV *)cv); 553 PUSHs ((SV *)cv);
504 554
505 CvDEPTH (cv) = 0; 555 CvDEPTH (cv) = 0;
506 get_padlist (aTHX_ cv); 556 get_padlist (aTHX_ cv);
507 } 557 }
… …
546 #undef VAR 596 #undef VAR
547 } 597 }
548} 598}
549 599
550/* 600/*
551 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
552 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
553 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
554 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
555 */ 605 */
556#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
… …
587 637
588 New(54,PL_savestack,24,ANY); 638 New(54,PL_savestack,24,ANY);
589 PL_savestack_ix = 0; 639 PL_savestack_ix = 0;
590 PL_savestack_max = 24; 640 PL_savestack_max = 24;
591 641
592#if !PERL_VERSION_ATLEAST (5,9,0) 642#if !PERL_VERSION_ATLEAST (5,10,0)
593 New(54,PL_retstack,4,OP*); 643 New(54,PL_retstack,4,OP*);
594 PL_retstack_ix = 0; 644 PL_retstack_ix = 0;
595 PL_retstack_max = 4; 645 PL_retstack_max = 4;
596#endif 646#endif
597} 647}
… …
599 649
600/* 650/*
601 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
602 */ 652 */
603static void 653static void
604coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
605{ 655{
606 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
607 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
608 658
609 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
620 670
621 Safefree (PL_tmps_stack); 671 Safefree (PL_tmps_stack);
622 Safefree (PL_markstack); 672 Safefree (PL_markstack);
623 Safefree (PL_scopestack); 673 Safefree (PL_scopestack);
624 Safefree (PL_savestack); 674 Safefree (PL_savestack);
625#if !PERL_VERSION_ATLEAST (5,9,0) 675#if !PERL_VERSION_ATLEAST (5,10,0)
626 Safefree (PL_retstack); 676 Safefree (PL_retstack);
627#endif 677#endif
628} 678}
629 679
630static size_t 680static size_t
… …
646 #undef VAR 696 #undef VAR
647 } 697 }
648 else 698 else
649 slot = coro->slot; 699 slot = coro->slot;
650 700
701 if (slot)
702 {
651 rss += sizeof (slot->curstackinfo); 703 rss += sizeof (slot->curstackinfo);
652 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
654 rss += slot->tmps_max * sizeof (SV *); 706 rss += slot->tmps_max * sizeof (SV *);
655 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656 rss += slot->scopestack_max * sizeof (I32); 708 rss += slot->scopestack_max * sizeof (I32);
657 rss += slot->savestack_max * sizeof (ANY); 709 rss += slot->savestack_max * sizeof (ANY);
658 710
659#if !PERL_VERSION_ATLEAST (5,9,0) 711#if !PERL_VERSION_ATLEAST (5,10,0)
660 rss += slot->retstack_max * sizeof (OP *); 712 rss += slot->retstack_max * sizeof (OP *);
661#endif 713#endif
714 }
662 } 715 }
663 716
664 return rss; 717 return rss;
665} 718}
666 719
667/** coroutine stack handling ************************************************/ 720/** coroutine stack handling ************************************************/
668 721
669static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 722static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
670static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
725
726/* apparently < 5.8.8 */
727#ifndef MgPV_nolen_const
728#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
729 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
730 (const char*)(mg)->mg_ptr)
731#endif
671 732
672/* 733/*
673 * This overrides the default magic get method of %SIG elements. 734 * This overrides the default magic get method of %SIG elements.
674 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
675 * and instead of tryign to save and restore the hash elements, we just provide 736 * and instead of tryign to save and restore the hash elements, we just provide
… …
683{ 744{
684 const char *s = MgPV_nolen_const (mg); 745 const char *s = MgPV_nolen_const (mg);
685 746
686 if (*s == '_') 747 if (*s == '_')
687 { 748 {
688 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 749 SV **svp = 0;
689 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 750
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753
754 if (svp)
755 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
757 return 0;
758 }
690 } 759 }
691 760
692 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762}
763
764static int
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{
767 const char *s = MgPV_nolen_const (mg);
768
769 if (*s == '_')
770 {
771 SV **svp = 0;
772
773 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
774 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
775
776 if (svp)
777 {
778 SV *old = *svp;
779 *svp = 0;
780 SvREFCNT_dec (old);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
693} 786}
694 787
695static int 788static int
696coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
697{ 790{
… …
707 if (svp) 800 if (svp)
708 { 801 {
709 SV *old = *svp; 802 SV *old = *svp;
710 *svp = newSVsv (sv); 803 *svp = newSVsv (sv);
711 SvREFCNT_dec (old); 804 SvREFCNT_dec (old);
712 return; 805 return 0;
713 } 806 }
714 } 807 }
715 808
716 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
717} 810}
718 811
719static void 812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
720coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
721{ 829{
722 /* 830 /*
723 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
724 */ 832 */
… …
731 PL_curpm = 0; 839 PL_curpm = 0;
732 PL_curpad = 0; 840 PL_curpad = 0;
733 PL_localizing = 0; 841 PL_localizing = 0;
734 PL_dirty = 0; 842 PL_dirty = 0;
735 PL_restartop = 0; 843 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0;
846#endif
736 847
737 /* recreate the die/warn hooks */ 848 /* recreate the die/warn hooks */
738 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
739 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
740 851
741 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
742 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
743 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
744 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
745 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
746 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
747 858
748 { 859 {
749 dSP; 860 dSP;
750 LOGOP myop; 861 UNOP myop;
751 862
752 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
753 myop.op_next = Nullop; 864 myop.op_next = Nullop;
754 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
755 866
756 PUSHMARK (SP); 867 PUSHMARK (SP);
757 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
758 PUTBACK; 869 PUTBACK;
… …
760 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
761 SPAGAIN; 872 SPAGAIN;
762 } 873 }
763 874
764 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
765 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
766 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
767 * so we ENTER here for symmetry
768 */ 877 */
769 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
770} 879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
771 880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 coro_throw = coro->throw;
891}
892
772static void 893static void
773coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
774{ 895{
775 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
776 { 897 {
777 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
778 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
798 919
799 SvREFCNT_dec (PL_diehook); 920 SvREFCNT_dec (PL_diehook);
800 SvREFCNT_dec (PL_warnhook); 921 SvREFCNT_dec (PL_warnhook);
801 922
802 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
803 SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (coro_throw);
804 925
805 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
806} 927}
807 928
808static void 929INLINE void
809free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
810{ 931{
811 if (expect_true (coro_mortal)) 932 if (expect_true (coro_mortal))
812 { 933 {
813 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
… …
818static int 939static int
819runops_trace (pTHX) 940runops_trace (pTHX)
820{ 941{
821 COP *oldcop = 0; 942 COP *oldcop = 0;
822 int oldcxix = -2; 943 int oldcxix = -2;
823 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
824 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
825 946
826 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
827 { 948 {
828 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
847 : cx->blk_gimme == G_SCALAR ? bot + 1 968 : cx->blk_gimme == G_SCALAR ? bot + 1
848 : bot; 969 : bot;
849 970
850 av_extend (av, top - bot); 971 av_extend (av, top - bot);
851 while (bot < top) 972 while (bot < top)
852 av_push (av, SvREFCNT_inc (*bot++)); 973 av_push (av, SvREFCNT_inc_NN (*bot++));
853 974
854 PL_runops = RUNOPS_DEFAULT; 975 PL_runops = RUNOPS_DEFAULT;
855 ENTER; 976 ENTER;
856 SAVETMPS; 977 SAVETMPS;
857 EXTEND (SP, 3); 978 EXTEND (SP, 3);
… …
895 SAVETMPS; 1016 SAVETMPS;
896 EXTEND (SP, 3); 1017 EXTEND (SP, 3);
897 PUSHMARK (SP); 1018 PUSHMARK (SP);
898 PUSHs (&PL_sv_yes); 1019 PUSHs (&PL_sv_yes);
899 PUSHs (fullname); 1020 PUSHs (fullname);
900 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
901 PUTBACK; 1022 PUTBACK;
902 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
903 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
904 SPAGAIN; 1025 SPAGAIN;
905 FREETMPS; 1026 FREETMPS;
… …
937 1058
938 TAINT_NOT; 1059 TAINT_NOT;
939 return 0; 1060 return 0;
940} 1061}
941 1062
942/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
943/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
944/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
945static void NOINLINE 1082static void NOINLINE
946cctx_prepare (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
947{ 1084{
948 dSP;
949 LOGOP myop;
950
951 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
952 1086
953 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
954 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
955 1089
956 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
957 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
958 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
959 1094
960 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
961 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
962 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
963 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
964 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
965 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
966 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
967 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
968} 1108}
969 1109
970/* 1110/*
971 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
972 */ 1112 */
973static void 1113static void
974cctx_run (void *arg) 1114cctx_run (void *arg)
975{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
976 dTHX; 1122 dTHX;
977 1123
978 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
979 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
980
981 /* we now skip the entersub that lead to transfer() */
982 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
983 1127
984 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
985 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
986 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
987 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
988 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
989 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
990 1137
991 /* 1138 /*
992 * If perl-run returns we assume exit() was being called or the coro 1139 * If perl-run returns we assume exit() was being called or the coro
993 * fell off the end, which seems to be the only valid (non-bug) 1140 * fell off the end, which seems to be the only valid (non-bug)
994 * reason for perl_run to return. We try to exit by jumping to the 1141 * reason for perl_run to return. We try to exit by jumping to the
995 * bootstrap-time "top" top_env, as we cannot restore the "main" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
996 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
997 */ 1144 */
998 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
999 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
1000} 1148}
1001 1149
1002static coro_cctx * 1150static coro_cctx *
1003cctx_new () 1151cctx_new ()
1004{ 1152{
1005 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
1006 void *stack_start; 1182 void *stack_start;
1007 size_t stack_size; 1183 size_t stack_size;
1008 1184
1009 ++cctx_count;
1010
1011 Newz (0, cctx, 1, coro_cctx);
1012
1013#if HAVE_MMAP 1185#if HAVE_MMAP
1014 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1015 /* mmap supposedly does allocate-on-write for us */ 1187 /* mmap supposedly does allocate-on-write for us */
1016 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1017 1189
1018 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
1019 { 1191 {
1020# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
1021 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1022# endif 1194 #endif
1023 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1024 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1025 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
1026 } 1198 }
1027 else 1199 else
1028#endif 1200#endif
1029 { 1201 {
1030 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1031 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
1032 1204
1033 if (!cctx->sptr) 1205 if (!cctx->sptr)
1034 { 1206 {
1035 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1036 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
1037 } 1209 }
1038 1210
1039 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
1040 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
1041 } 1213 }
1042 1214
1043 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1044 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1045 1220
1046 return cctx; 1221 return cctx;
1047} 1222}
1048 1223
… …
1051{ 1226{
1052 if (!cctx) 1227 if (!cctx)
1053 return; 1228 return;
1054 1229
1055 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
1056 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
1057#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
1058 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1059#endif 1238 #endif
1060 1239
1061#if HAVE_MMAP 1240#if HAVE_MMAP
1062 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
1063 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
1064 else 1243 else
1065#endif 1244#endif
1066 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
1067 1247
1068 Safefree (cctx); 1248 Safefree (cctx);
1069} 1249}
1070 1250
1071/* wether this cctx should be destructed */ 1251/* wether this cctx should be destructed */
1072#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1073 1253
1074static coro_cctx * 1254static coro_cctx *
1075cctx_get (pTHX) 1255cctx_get (pTHX)
1076{ 1256{
1077 while (expect_true (cctx_first)) 1257 while (expect_true (cctx_first))
… …
1084 return cctx; 1264 return cctx;
1085 1265
1086 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
1087 } 1267 }
1088 1268
1089 return cctx_new (); 1269 return cctx_new_run ();
1090} 1270}
1091 1271
1092static void 1272static void
1093cctx_put (coro_cctx *cctx) 1273cctx_put (coro_cctx *cctx)
1094{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
1095 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
1096 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
1097 { 1279 {
1098 coro_cctx *first = cctx_first; 1280 coro_cctx *first = cctx_first;
1099 cctx_first = first->next; 1281 cctx_first = first->next;
1100 --cctx_idle; 1282 --cctx_idle;
1101 1283
… …
1110/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
1111 1293
1112static void 1294static void
1113transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
1114{ 1296{
1297 /* TODO: throwing up here is considered harmful */
1298
1115 if (expect_true (prev != next)) 1299 if (expect_true (prev != next))
1116 { 1300 {
1117 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1118 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1119 1303
1120 if (expect_false (next->flags & CF_RUNNING)) 1304 if (expect_false (next->flags & CF_RUNNING))
1121 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1122 1306
1123 if (expect_false (next->flags & CF_DESTROYED)) 1307 if (expect_false (next->flags & CF_DESTROYED))
1124 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1125 1309
1126 if (
1127#if PERL_VERSION_ATLEAST (5,9,0) 1310#if !PERL_VERSION_ATLEAST (5,10,0)
1128 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1129#else
1130 expect_false (PL_lex_state != LEX_NOTPARSING) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1131#endif
1132 )
1133 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif
1134 } 1314 }
1135} 1315}
1136 1316
1137/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
1138static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
1139transfer (pTHX_ struct coro *prev, struct coro *next) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1140{ 1320{
1141 dSTACKLEVEL; 1321 dSTACKLEVEL;
1142 static volatile int has_throw;
1143 1322
1144 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
1145 if (expect_false (!next)) 1324 if (expect_false (!next))
1146 { 1325 {
1147 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1151 { 1330 {
1152 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1153 1332
1154 if (expect_false (prev->flags & CF_NEW)) 1333 if (expect_false (prev->flags & CF_NEW))
1155 { 1334 {
1156 /* create a new empty context */ 1335 /* create a new empty/source context */
1157 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1158 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1159 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1160 } 1339 }
1161 1340
1162 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1163 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1164
1165 LOCK;
1166 1343
1167 /* first get rid of the old state */ 1344 /* first get rid of the old state */
1168 save_perl (aTHX_ prev); 1345 save_perl (aTHX_ prev);
1169 1346
1170 if (expect_false (next->flags & CF_NEW)) 1347 if (expect_false (next->flags & CF_NEW))
… …
1177 else 1354 else
1178 load_perl (aTHX_ next); 1355 load_perl (aTHX_ next);
1179 1356
1180 prev__cctx = prev->cctx; 1357 prev__cctx = prev->cctx;
1181 1358
1182 /* possibly "free" the cctx */ 1359 /* possibly untie and reuse the cctx */
1183 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1360 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE)
1363 && !force_cctx
1364 ))
1184 { 1365 {
1185 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1186 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1187 1368
1188 prev->cctx = 0; 1369 prev->cctx = 0;
1189 1370
1190 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1191 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1198 1379
1199 ++next->usecount; 1380 ++next->usecount;
1200 1381
1201 if (expect_true (!next->cctx)) 1382 if (expect_true (!next->cctx))
1202 next->cctx = cctx_get (aTHX); 1383 next->cctx = cctx_get (aTHX);
1203
1204 has_throw = !!next->throw;
1205 1384
1206 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1207 { 1386 {
1208 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1209 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1210 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1211 } 1390 }
1212 1391
1213 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1214 UNLOCK;
1215
1216 if (expect_false (has_throw))
1217 {
1218 struct coro *coro = SvSTATE (coro_current);
1219
1220 if (coro->throw)
1221 {
1222 SV *exception = coro->throw;
1223 coro->throw = 0;
1224 sv_setsv (ERRSV, exception);
1225 croak (0);
1226 }
1227 }
1228 } 1393 }
1229} 1394}
1230 1395
1231struct transfer_args
1232{
1233 struct coro *prev, *next;
1234};
1235
1236#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1237#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1238 1398
1239/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1240 1400
1241static int 1401static int
1242coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1243{ 1403{
1244 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1245 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1246 1409
1247 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1248 1411
1249 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1250 { 1413 {
1251 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1252 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1253 LOCK;
1254 --coro_nready; 1416 --coro_nready;
1255 UNLOCK;
1256 } 1417 }
1257 else 1418 else
1258 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1259 1420
1260 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1261 { 1422 {
1262 struct coro temp; 1423 struct coro temp;
1263 1424
1264 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1265 croak ("FATAL: tried to destroy currently running coroutine");
1266 1426
1267 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1268 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1269 1429
1270 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1271 1431
1272 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1273 1433
1274 coro->slot = 0; 1434 coro->slot = 0;
1275 } 1435 }
… …
1321# define MGf_DUP 0 1481# define MGf_DUP 0
1322#endif 1482#endif
1323}; 1483};
1324 1484
1325static void 1485static void
1326prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1327{ 1487{
1328 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1329 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1330 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1331} 1491}
1332 1492
1333static void 1493static void
1334api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1335{ 1495{
1336 dTHX;
1337 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1338 1497
1339 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1340 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1341} 1500}
1342 1501
1343/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1344 1503
1345static void 1504INLINE void
1346coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1347{ 1506{
1348 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1349} 1508}
1350 1509
1351static SV * 1510INLINE SV *
1352coro_deq (pTHX) 1511coro_deq (pTHX)
1353{ 1512{
1354 int prio; 1513 int prio;
1355 1514
1356 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1359 1518
1360 return 0; 1519 return 0;
1361} 1520}
1362 1521
1363static int 1522static int
1364api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1365{ 1524{
1366 dTHX;
1367 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1368 1528
1369 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1370 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1371 1531
1372 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1374 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1375 return 0; 1535 return 0;
1376 1536
1377 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1378 1538
1379 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1380 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1381 ++coro_nready; 1543 ++coro_nready;
1382 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1383 1562
1384 return 1; 1563 return 1;
1385} 1564}
1386 1565
1387static int 1566static int
1388api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1389{ 1568{
1390 dTHX;
1391 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1392} 1570}
1393 1571
1394static void 1572INLINE void
1395prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1396{ 1574{
1397 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1398 1576
1399 for (;;) 1577 for (;;)
1400 { 1578 {
1401 LOCK;
1402 next_sv = coro_deq (aTHX); 1579 next_sv = coro_deq (aTHX);
1403 1580
1404 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1405 if (expect_false (!next_sv)) 1582 if (expect_false (!next_sv))
1406 { 1583 {
1407 dSP; 1584 dSP;
1408 UNLOCK;
1409 1585
1410 ENTER; 1586 ENTER;
1411 SAVETMPS; 1587 SAVETMPS;
1412 1588
1413 PUSHMARK (SP); 1589 PUSHMARK (SP);
1414 PUTBACK; 1590 PUTBACK;
1415 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1416 SPAGAIN;
1417 1592
1418 FREETMPS; 1593 FREETMPS;
1419 LEAVE; 1594 LEAVE;
1420 continue; 1595 continue;
1421 } 1596 }
1422 1597
1423 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1424 1599
1425 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1426 if (expect_false (ta->next->flags & CF_DESTROYED)) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1427 { 1602 {
1428 UNLOCK;
1429 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1430 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1431 continue; 1605 continue;
1432 } 1606 }
1433 1607
1434 --coro_nready; 1608 --coro_nready;
1435 UNLOCK;
1436 break; 1609 break;
1437 } 1610 }
1438 1611
1439 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1440 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1441 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1442 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1443 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1444 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1445 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1446 1619
1447 LOCK;
1448 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1449 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1450 UNLOCK;
1451} 1622}
1452 1623
1453static void 1624INLINE void
1454prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1455{ 1626{
1456 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1457 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1458} 1629}
1459 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1460static int 1654static int
1461prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1462{ 1656{
1463 if (coro_nready) 1657 struct coro_transfer_args ta;
1464 { 1658
1465 SV *prev = SvRV (coro_current);
1466 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1467 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1468 return 1; 1664 return 1;
1469 } 1665 }
1470 else 1666 else
1471 return 0; 1667 return 0;
1472} 1668}
1473 1669
1474static void
1475api_schedule (void)
1476{
1477 dTHX;
1478 struct transfer_args ta;
1479
1480 prepare_schedule (aTHX_ &ta);
1481 TRANSFER (ta);
1482}
1483
1484static int 1670static int
1485api_cede (void) 1671api_cede_notself (pTHX)
1486{ 1672{
1487 dTHX; 1673 if (coro_nready)
1674 {
1488 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1489 1676
1490 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1491
1492 if (expect_true (ta.prev != ta.next))
1493 {
1494 TRANSFER (ta); 1678 TRANSFER (ta, 1);
1495 return 1; 1679 return 1;
1496 } 1680 }
1497 else 1681 else
1498 return 0; 1682 return 0;
1499} 1683}
1500 1684
1501static int 1685static void
1502api_cede_notself (void)
1503{
1504 dTHX;
1505 struct transfer_args ta;
1506
1507 if (prepare_cede_notself (aTHX_ &ta))
1508 {
1509 TRANSFER (ta);
1510 return 1;
1511 }
1512 else
1513 return 0;
1514}
1515
1516static void
1517api_trace (SV *coro_sv, int flags) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1518{ 1687{
1519 dTHX;
1520 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1521 1689
1522 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1523 { 1691 {
1524 if (!coro->cctx) 1692 if (!coro->cctx)
1525 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1526 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1527 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1528 1696
1529 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1530 } 1698 }
1531 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1532 { 1700 {
… …
1537 else 1705 else
1538 coro->slot->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1539 } 1707 }
1540} 1708}
1541 1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1740static void
1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1742{
1743 SV **arg = (SV **)slf_frame.data;
1744
1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1746}
1747
1748static void
1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1750{
1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 /* make sure we put something on the stack in scalar context */
1846 if (GIMME_V == G_SCALAR)
1847 {
1848 dSP;
1849 SV **bot = PL_stack_base + checkmark;
1850
1851 if (sp == bot) /* too few, push undef */
1852 bot [1] = &PL_sv_undef;
1853 else if (sp != bot + 1) /* too many, take last one */
1854 bot [1] = *sp;
1855
1856 SP = bot + 1;
1857
1858 PUTBACK;
1859 }
1860
1861 /* exception handling */
1862 if (expect_false (coro_throw))
1863 {
1864 SV *exception = sv_2mortal (coro_throw);
1865
1866 coro_throw = 0;
1867 sv_setsv (ERRSV, exception);
1868 croak (0);
1869 }
1870
1871 return NORMAL;
1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1923
1924/*****************************************************************************/
1925/* PerlIO::cede */
1926
1927typedef struct
1928{
1929 PerlIOBuf base;
1930 NV next, every;
1931} PerlIOCede;
1932
1933static IV
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every;
1940
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942}
1943
1944static SV *
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948
1949 return newSVnv (self->every);
1950}
1951
1952static IV
1953PerlIOCede_flush (pTHX_ PerlIO *f)
1954{
1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1956 double now = nvtime ();
1957
1958 if (now >= self->next)
1959 {
1960 api_cede (aTHX);
1961 self->next = now + self->every;
1962 }
1963
1964 return PerlIOBuf_flush (aTHX_ f);
1965}
1966
1967static PerlIO_funcs PerlIO_cede =
1968{
1969 sizeof(PerlIO_funcs),
1970 "cede",
1971 sizeof(PerlIOCede),
1972 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1973 PerlIOCede_pushed,
1974 PerlIOBuf_popped,
1975 PerlIOBuf_open,
1976 PerlIOBase_binmode,
1977 PerlIOCede_getarg,
1978 PerlIOBase_fileno,
1979 PerlIOBuf_dup,
1980 PerlIOBuf_read,
1981 PerlIOBuf_unread,
1982 PerlIOBuf_write,
1983 PerlIOBuf_seek,
1984 PerlIOBuf_tell,
1985 PerlIOBuf_close,
1986 PerlIOCede_flush,
1987 PerlIOBuf_fill,
1988 PerlIOBase_eof,
1989 PerlIOBase_error,
1990 PerlIOBase_clearerr,
1991 PerlIOBase_setlinebuf,
1992 PerlIOBuf_get_base,
1993 PerlIOBuf_bufsiz,
1994 PerlIOBuf_get_ptr,
1995 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt,
1997};
1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{
2005 SV *count_sv = AvARRAY (av)[0];
2006 IV count = SvIVX (count_sv);
2007
2008 count += adjust;
2009 SvIVX (count_sv) = count;
2010
2011 /* now wake up as many waiters as are expected to lock */
2012 while (count > 0 && AvFILLp (av) > 0)
2013 {
2014 SV *cb;
2015
2016 /* swap first two elements so we can shift a waiter */
2017 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av);
2020
2021 if (SvOBJECT (cb))
2022 api_ready (aTHX_ cb);
2023 else
2024 croak ("callbacks not yet supported");
2025
2026 SvREFCNT_dec (cb);
2027
2028 --count;
2029 }
2030}
2031
2032static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2034{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037}
2038
2039static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2041{
2042 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0];
2044
2045 if (SvIVX (count_sv) > 0)
2046 {
2047 SvSTATE_current->on_destroy = 0;
2048 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2049 return 0;
2050 }
2051 else
2052 {
2053 int i;
2054 /* if we were woken up but can't down, we look through the whole */
2055 /* waiters list and only add us if we aren't in there already */
2056 /* this avoids some degenerate memory usage cases */
2057
2058 for (i = 1; i <= AvFILLp (av); ++i)
2059 if (AvARRAY (av)[i] == SvRV (coro_current))
2060 return 1;
2061
2062 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2063 return 1;
2064 }
2065}
2066
2067static void
2068slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 AV *av = (AV *)SvRV (arg [0]);
2071
2072 if (SvIVX (AvARRAY (av)[0]) > 0)
2073 {
2074 frame->data = (void *)av;
2075 frame->prepare = prepare_nop;
2076 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2077 }
2078 else
2079 {
2080 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2081
2082 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2083 frame->prepare = prepare_schedule;
2084
2085 /* to avoid race conditions when a woken-up coro gets terminated */
2086 /* we arrange for a temporary on_destroy that calls adjust (0) */
2087 assert (!SvSTATE_current->on_destroy);//D
2088 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2089 }
2090
2091 frame->check = slf_check_semaphore_down;
2092
2093}
2094
2095/*****************************************************************************/
2096/* gensub: simple closure generation utility */
2097
2098#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2099
2100/* create a closure from XS, returns a code reference */
2101/* the arg can be accessed via GENSUB_ARG from the callback */
2102/* the callback must use dXSARGS/XSRETURN */
2103static SV *
2104gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2105{
2106 CV *cv = (CV *)newSV (0);
2107
2108 sv_upgrade ((SV *)cv, SVt_PVCV);
2109
2110 CvANON_on (cv);
2111 CvISXSUB_on (cv);
2112 CvXSUB (cv) = xsub;
2113 GENSUB_ARG = arg;
2114
2115 return newRV_noinc ((SV *)cv);
2116}
2117
2118/*****************************************************************************/
2119/* Coro::AIO */
2120
2121#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2122
2123/* helper storage struct */
2124struct io_state
2125{
2126 int errorno;
2127 I32 laststype; /* U16 in 5.10.0 */
2128 int laststatval;
2129 Stat_t statcache;
2130};
2131
2132static void
2133coro_aio_callback (pTHX_ CV *cv)
2134{
2135 dXSARGS;
2136 AV *state = (AV *)GENSUB_ARG;
2137 SV *coro = av_pop (state);
2138 SV *data_sv = newSV (sizeof (struct io_state));
2139
2140 av_extend (state, items);
2141
2142 sv_upgrade (data_sv, SVt_PV);
2143 SvCUR_set (data_sv, sizeof (struct io_state));
2144 SvPOK_only (data_sv);
2145
2146 {
2147 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2148
2149 data->errorno = errno;
2150 data->laststype = PL_laststype;
2151 data->laststatval = PL_laststatval;
2152 data->statcache = PL_statcache;
2153 }
2154
2155 /* now build the result vector out of all the parameters and the data_sv */
2156 {
2157 int i;
2158
2159 for (i = 0; i < items; ++i)
2160 av_push (state, SvREFCNT_inc_NN (ST (i)));
2161 }
2162
2163 av_push (state, data_sv);
2164
2165 api_ready (aTHX_ coro);
2166 SvREFCNT_dec (coro);
2167 SvREFCNT_dec ((AV *)state);
2168}
2169
2170static int
2171slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2172{
2173 AV *state = (AV *)frame->data;
2174
2175 /* one element that is an RV? repeat! */
2176 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2177 return 1;
2178
2179 /* restore status */
2180 {
2181 SV *data_sv = av_pop (state);
2182 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2183
2184 errno = data->errorno;
2185 PL_laststype = data->laststype;
2186 PL_laststatval = data->laststatval;
2187 PL_statcache = data->statcache;
2188
2189 SvREFCNT_dec (data_sv);
2190 }
2191
2192 /* push result values */
2193 {
2194 dSP;
2195 int i;
2196
2197 EXTEND (SP, AvFILLp (state) + 1);
2198 for (i = 0; i <= AvFILLp (state); ++i)
2199 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2200
2201 PUTBACK;
2202 }
2203
2204 return 0;
2205}
2206
2207static void
2208slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2211 SV *coro_hv = SvRV (coro_current);
2212 struct coro *coro = SvSTATE_hv (coro_hv);
2213
2214 /* put our coroutine id on the state arg */
2215 av_push (state, SvREFCNT_inc_NN (coro_hv));
2216
2217 /* first see whether we have a non-zero priority and set it as AIO prio */
2218 if (coro->prio)
2219 {
2220 dSP;
2221
2222 static SV *prio_cv;
2223 static SV *prio_sv;
2224
2225 if (expect_false (!prio_cv))
2226 {
2227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2228 prio_sv = newSViv (0);
2229 }
2230
2231 PUSHMARK (SP);
2232 sv_setiv (prio_sv, coro->prio);
2233 XPUSHs (prio_sv);
2234
2235 PUTBACK;
2236 call_sv (prio_cv, G_VOID | G_DISCARD);
2237 }
2238
2239 /* now call the original request */
2240 {
2241 dSP;
2242 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2243 int i;
2244
2245 PUSHMARK (SP);
2246
2247 /* first push all args to the stack */
2248 EXTEND (SP, items + 1);
2249
2250 for (i = 0; i < items; ++i)
2251 PUSHs (arg [i]);
2252
2253 /* now push the callback closure */
2254 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2255
2256 /* now call the AIO function - we assume our request is uncancelable */
2257 PUTBACK;
2258 call_sv ((SV *)req, G_VOID | G_DISCARD);
2259 }
2260
2261 /* now that the requets is going, we loop toll we have a result */
2262 frame->data = (void *)state;
2263 frame->prepare = prepare_schedule;
2264 frame->check = slf_check_aio_req;
2265}
2266
2267static void
2268coro_aio_req_xs (pTHX_ CV *cv)
2269{
2270 dXSARGS;
2271
2272 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2273
2274 XSRETURN_EMPTY;
2275}
2276
2277/*****************************************************************************/
2278
1542MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2279MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1543 2280
1544PROTOTYPES: DISABLE 2281PROTOTYPES: DISABLE
1545 2282
1546BOOT: 2283BOOT:
1547{ 2284{
1548#ifdef USE_ITHREADS 2285#ifdef USE_ITHREADS
1549 MUTEX_INIT (&coro_mutex); 2286# if CORO_PTHREAD
2287 coro_thx = PERL_GET_CONTEXT;
2288# endif
1550#endif 2289#endif
1551 BOOT_PAGESIZE; 2290 BOOT_PAGESIZE;
1552 2291
1553 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2292 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1554 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2293 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1555 2294
1556 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2295 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1557 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2296 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1558 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2297 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1559 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1560 2298
1561 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2299 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1562 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2300 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1563 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2301 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1564 2302
… …
1573 main_top_env = PL_top_env; 2311 main_top_env = PL_top_env;
1574 2312
1575 while (main_top_env->je_prev) 2313 while (main_top_env->je_prev)
1576 main_top_env = main_top_env->je_prev; 2314 main_top_env = main_top_env->je_prev;
1577 2315
2316 {
2317 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2318
2319 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2320 hv_store_ent (PL_custom_op_names, slf,
2321 newSVpv ("coro_slf", 0), 0);
2322
2323 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2324 hv_store_ent (PL_custom_op_descs, slf,
2325 newSVpv ("coro schedule like function", 0), 0);
2326 }
2327
1578 coroapi.ver = CORO_API_VERSION; 2328 coroapi.ver = CORO_API_VERSION;
1579 coroapi.rev = CORO_API_REVISION; 2329 coroapi.rev = CORO_API_REVISION;
2330
1580 coroapi.transfer = api_transfer; 2331 coroapi.transfer = api_transfer;
2332
2333 coroapi.sv_state = SvSTATE_;
2334 coroapi.execute_slf = api_execute_slf;
2335 coroapi.prepare_nop = prepare_nop;
2336 coroapi.prepare_schedule = prepare_schedule;
2337 coroapi.prepare_cede = prepare_cede;
2338 coroapi.prepare_cede_notself = prepare_cede_notself;
2339
2340 {
2341 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2342
2343 if (!svp) croak ("Time::HiRes is required");
2344 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2345
2346 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2347 }
1581 2348
1582 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2349 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1583} 2350}
1584 2351
1585SV * 2352SV *
… …
1609 av_push (coro->args, newSVsv (ST (i))); 2376 av_push (coro->args, newSVsv (ST (i)));
1610} 2377}
1611 OUTPUT: 2378 OUTPUT:
1612 RETVAL 2379 RETVAL
1613 2380
1614# these not obviously related functions are all rolled into the same xs
1615# function to increase chances that they all will call transfer with the same
1616# stack offset
1617void 2381void
1618_set_stacklevel (...) 2382transfer (...)
1619 ALIAS: 2383 PROTOTYPE: $$
1620 Coro::State::transfer = 1 2384 CODE:
1621 Coro::schedule = 2 2385 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1622 Coro::cede = 3
1623 Coro::cede_notself = 4
1624 CODE:
1625{
1626 struct transfer_args ta;
1627
1628 PUTBACK;
1629 switch (ix)
1630 {
1631 case 0:
1632 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1633 ta.next = 0;
1634 break;
1635
1636 case 1:
1637 if (items != 2)
1638 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1639
1640 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1641 break;
1642
1643 case 2:
1644 prepare_schedule (aTHX_ &ta);
1645 break;
1646
1647 case 3:
1648 prepare_cede (aTHX_ &ta);
1649 break;
1650
1651 case 4:
1652 if (!prepare_cede_notself (aTHX_ &ta))
1653 XSRETURN_EMPTY;
1654
1655 break;
1656 }
1657 SPAGAIN;
1658
1659 BARRIER;
1660 PUTBACK;
1661 TRANSFER (ta);
1662 SPAGAIN; /* might be the sp of a different coroutine now */
1663 /* be extra careful not to ever do anything after TRANSFER */
1664}
1665 2386
1666bool 2387bool
1667_destroy (SV *coro_sv) 2388_destroy (SV *coro_sv)
1668 CODE: 2389 CODE:
1669 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2390 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1670 OUTPUT: 2391 OUTPUT:
1671 RETVAL 2392 RETVAL
1672 2393
1673void 2394void
1674_exit (code) 2395_exit (int code)
1675 int code
1676 PROTOTYPE: $ 2396 PROTOTYPE: $
1677 CODE: 2397 CODE:
1678 _exit (code); 2398 _exit (code);
1679 2399
1680int 2400int
1681cctx_stacksize (int new_stacksize = 0) 2401cctx_stacksize (int new_stacksize = 0)
2402 PROTOTYPE: ;$
1682 CODE: 2403 CODE:
1683 RETVAL = coro_stacksize; 2404 RETVAL = cctx_stacksize;
1684 if (new_stacksize) 2405 if (new_stacksize)
2406 {
1685 coro_stacksize = new_stacksize; 2407 cctx_stacksize = new_stacksize;
2408 ++cctx_gen;
2409 }
1686 OUTPUT: 2410 OUTPUT:
1687 RETVAL 2411 RETVAL
1688 2412
1689int 2413int
2414cctx_max_idle (int max_idle = 0)
2415 PROTOTYPE: ;$
2416 CODE:
2417 RETVAL = cctx_max_idle;
2418 if (max_idle > 1)
2419 cctx_max_idle = max_idle;
2420 OUTPUT:
2421 RETVAL
2422
2423int
1690cctx_count () 2424cctx_count ()
2425 PROTOTYPE:
1691 CODE: 2426 CODE:
1692 RETVAL = cctx_count; 2427 RETVAL = cctx_count;
1693 OUTPUT: 2428 OUTPUT:
1694 RETVAL 2429 RETVAL
1695 2430
1696int 2431int
1697cctx_idle () 2432cctx_idle ()
2433 PROTOTYPE:
1698 CODE: 2434 CODE:
1699 RETVAL = cctx_idle; 2435 RETVAL = cctx_idle;
1700 OUTPUT: 2436 OUTPUT:
1701 RETVAL 2437 RETVAL
1702 2438
1703void 2439void
1704list () 2440list ()
2441 PROTOTYPE:
1705 PPCODE: 2442 PPCODE:
1706{ 2443{
1707 struct coro *coro; 2444 struct coro *coro;
1708 for (coro = coro_first; coro; coro = coro->next) 2445 for (coro = coro_first; coro; coro = coro->next)
1709 if (coro->hv) 2446 if (coro->hv)
… …
1714call (Coro::State coro, SV *coderef) 2451call (Coro::State coro, SV *coderef)
1715 ALIAS: 2452 ALIAS:
1716 eval = 1 2453 eval = 1
1717 CODE: 2454 CODE:
1718{ 2455{
1719 if (coro->mainstack) 2456 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1720 { 2457 {
1721 struct coro temp; 2458 struct coro temp;
1722 2459
1723 if (!(coro->flags & CF_RUNNING)) 2460 if (!(coro->flags & CF_RUNNING))
1724 { 2461 {
… …
1768 RETVAL = boolSV (coro->flags & ix); 2505 RETVAL = boolSV (coro->flags & ix);
1769 OUTPUT: 2506 OUTPUT:
1770 RETVAL 2507 RETVAL
1771 2508
1772void 2509void
2510throw (Coro::State self, SV *throw = &PL_sv_undef)
2511 PROTOTYPE: $;$
2512 CODE:
2513{
2514 struct coro *current = SvSTATE_current;
2515 SV **throwp = self == current ? &coro_throw : &self->throw;
2516 SvREFCNT_dec (*throwp);
2517 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2518}
2519
2520void
1773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2521api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2522 PROTOTYPE: $;$
2523 C_ARGS: aTHX_ coro, flags
1774 2524
1775SV * 2525SV *
1776has_stack (Coro::State coro) 2526has_cctx (Coro::State coro)
1777 PROTOTYPE: $ 2527 PROTOTYPE: $
1778 CODE: 2528 CODE:
1779 RETVAL = boolSV (!!coro->cctx); 2529 RETVAL = boolSV (!!coro->cctx);
1780 OUTPUT: 2530 OUTPUT:
1781 RETVAL 2531 RETVAL
… …
1786 CODE: 2536 CODE:
1787 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2537 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1788 OUTPUT: 2538 OUTPUT:
1789 RETVAL 2539 RETVAL
1790 2540
1791IV 2541UV
1792rss (Coro::State coro) 2542rss (Coro::State coro)
1793 PROTOTYPE: $ 2543 PROTOTYPE: $
1794 ALIAS: 2544 ALIAS:
1795 usecount = 1 2545 usecount = 1
1796 CODE: 2546 CODE:
… …
1800 case 1: RETVAL = coro->usecount; break; 2550 case 1: RETVAL = coro->usecount; break;
1801 } 2551 }
1802 OUTPUT: 2552 OUTPUT:
1803 RETVAL 2553 RETVAL
1804 2554
2555void
2556force_cctx ()
2557 PROTOTYPE:
2558 CODE:
2559 SvSTATE_current->cctx->idle_sp = 0;
2560
2561void
2562swap_defsv (Coro::State self)
2563 PROTOTYPE: $
2564 ALIAS:
2565 swap_defav = 1
2566 CODE:
2567 if (!self->slot)
2568 croak ("cannot swap state with coroutine that has no saved state,");
2569 else
2570 {
2571 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2572 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2573
2574 SV *tmp = *src; *src = *dst; *dst = tmp;
2575 }
2576
1805 2577
1806MODULE = Coro::State PACKAGE = Coro 2578MODULE = Coro::State PACKAGE = Coro
1807 2579
1808BOOT: 2580BOOT:
1809{ 2581{
1810 int i; 2582 int i;
1811 2583
2584 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1812 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2585 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1813 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2586 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1815 2587
1816 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2588 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1817 SvREADONLY_on (coro_current); 2589 SvREADONLY_on (coro_current);
1818 2590
1819 coro_stash = gv_stashpv ("Coro", TRUE); 2591 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1827 2599
1828 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2600 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1829 coro_ready[i] = newAV (); 2601 coro_ready[i] = newAV ();
1830 2602
1831 { 2603 {
1832 SV *sv = perl_get_sv ("Coro::API", TRUE); 2604 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1833 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1834 2605
1835 coroapi.schedule = api_schedule; 2606 coroapi.schedule = api_schedule;
1836 coroapi.cede = api_cede; 2607 coroapi.cede = api_cede;
1837 coroapi.cede_notself = api_cede_notself; 2608 coroapi.cede_notself = api_cede_notself;
1838 coroapi.ready = api_ready; 2609 coroapi.ready = api_ready;
1839 coroapi.is_ready = api_is_ready; 2610 coroapi.is_ready = api_is_ready;
1840 coroapi.nready = &coro_nready; 2611 coroapi.nready = coro_nready;
1841 coroapi.current = coro_current; 2612 coroapi.current = coro_current;
1842 2613
1843 GCoroAPI = &coroapi; 2614 GCoroAPI = &coroapi;
1844 sv_setiv (sv, (IV)&coroapi); 2615 sv_setiv (sv, (IV)&coroapi);
1845 SvREADONLY_on (sv); 2616 SvREADONLY_on (sv);
1846 } 2617 }
1847} 2618}
2619
2620void
2621schedule (...)
2622 CODE:
2623 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2624
2625void
2626cede (...)
2627 CODE:
2628 CORO_EXECUTE_SLF_XS (slf_init_cede);
2629
2630void
2631cede_notself (...)
2632 CODE:
2633 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1848 2634
1849void 2635void
1850_set_current (SV *current) 2636_set_current (SV *current)
1851 PROTOTYPE: $ 2637 PROTOTYPE: $
1852 CODE: 2638 CODE:
1853 SvREFCNT_dec (SvRV (coro_current)); 2639 SvREFCNT_dec (SvRV (coro_current));
1854 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2640 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2641
2642void
2643_set_readyhook (SV *hook)
2644 PROTOTYPE: $
2645 CODE:
2646 SvREFCNT_dec (coro_readyhook);
2647 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1855 2648
1856int 2649int
1857prio (Coro::State coro, int newprio = 0) 2650prio (Coro::State coro, int newprio = 0)
2651 PROTOTYPE: $;$
1858 ALIAS: 2652 ALIAS:
1859 nice = 1 2653 nice = 1
1860 CODE: 2654 CODE:
1861{ 2655{
1862 RETVAL = coro->prio; 2656 RETVAL = coro->prio;
… …
1877 2671
1878SV * 2672SV *
1879ready (SV *self) 2673ready (SV *self)
1880 PROTOTYPE: $ 2674 PROTOTYPE: $
1881 CODE: 2675 CODE:
1882 RETVAL = boolSV (api_ready (self)); 2676 RETVAL = boolSV (api_ready (aTHX_ self));
1883 OUTPUT: 2677 OUTPUT:
1884 RETVAL 2678 RETVAL
1885 2679
1886int 2680int
1887nready (...) 2681nready (...)
… …
1889 CODE: 2683 CODE:
1890 RETVAL = coro_nready; 2684 RETVAL = coro_nready;
1891 OUTPUT: 2685 OUTPUT:
1892 RETVAL 2686 RETVAL
1893 2687
1894void
1895throw (Coro::State self, SV *throw = &PL_sv_undef)
1896 PROTOTYPE: $;$
1897 CODE:
1898 SvREFCNT_dec (self->throw);
1899 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1900
1901# for async_pool speedup 2688# for async_pool speedup
1902void 2689void
1903_pool_1 (SV *cb) 2690_pool_1 (SV *cb)
1904 CODE: 2691 CODE:
1905{ 2692{
1906 struct coro *coro = SvSTATE (coro_current);
1907 HV *hv = (HV *)SvRV (coro_current); 2693 HV *hv = (HV *)SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv ((SV *)hv);
1908 AV *defav = GvAV (PL_defgv); 2695 AV *defav = GvAV (PL_defgv);
1909 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2696 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1910 AV *invoke_av; 2697 AV *invoke_av;
1911 int i, len; 2698 int i, len;
1912 2699
1913 if (!invoke) 2700 if (!invoke)
1914 { 2701 {
1915 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2702 SV *old = PL_diehook;
2703 PL_diehook = 0;
2704 SvREFCNT_dec (old);
1916 croak ("\3async_pool terminate\2\n"); 2705 croak ("\3async_pool terminate\2\n");
1917 } 2706 }
1918 2707
1919 SvREFCNT_dec (coro->saved_deffh); 2708 SvREFCNT_dec (coro->saved_deffh);
1920 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2709 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1921 2710
1922 hv_store (hv, "desc", sizeof ("desc") - 1, 2711 hv_store (hv, "desc", sizeof ("desc") - 1,
1923 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2712 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1924 2713
1925 invoke_av = (AV *)SvRV (invoke); 2714 invoke_av = (AV *)SvRV (invoke);
… …
1929 2718
1930 if (len > 0) 2719 if (len > 0)
1931 { 2720 {
1932 av_fill (defav, len - 1); 2721 av_fill (defav, len - 1);
1933 for (i = 0; i < len; ++i) 2722 for (i = 0; i < len; ++i)
1934 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2723 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1935 } 2724 }
1936
1937 SvREFCNT_dec (invoke);
1938} 2725}
1939 2726
1940void 2727void
1941_pool_2 (SV *cb) 2728_pool_2 (SV *cb)
1942 CODE: 2729 CODE:
1943{ 2730{
1944 struct coro *coro = SvSTATE (coro_current); 2731 HV *hv = (HV *)SvRV (coro_current);
2732 struct coro *coro = SvSTATE_hv ((SV *)hv);
1945 2733
1946 sv_setsv (cb, &PL_sv_undef); 2734 sv_setsv (cb, &PL_sv_undef);
1947 2735
1948 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2736 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1949 coro->saved_deffh = 0; 2737 coro->saved_deffh = 0;
1950 2738
1951 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2739 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1952 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2740 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1953 { 2741 {
1954 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2742 SV *old = PL_diehook;
2743 PL_diehook = 0;
2744 SvREFCNT_dec (old);
1955 croak ("\3async_pool terminate\2\n"); 2745 croak ("\3async_pool terminate\2\n");
1956 } 2746 }
1957 2747
1958 av_clear (GvAV (PL_defgv)); 2748 av_clear (GvAV (PL_defgv));
1959 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2749 hv_store (hv, "desc", sizeof ("desc") - 1,
1960 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2750 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1961 2751
1962 coro->prio = 0; 2752 coro->prio = 0;
1963 2753
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2754 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (coro_current, 0); 2755 api_trace (aTHX_ coro_current, 0);
1966 2756
1967 av_push (av_async_pool, newSVsv (coro_current)); 2757 av_push (av_async_pool, newSVsv (coro_current));
1968} 2758}
1969 2759
1970 2760
2761MODULE = Coro::State PACKAGE = PerlIO::cede
2762
2763BOOT:
2764 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2765
2766
1971MODULE = Coro::State PACKAGE = Coro::AIO 2767MODULE = Coro::State PACKAGE = Coro::Semaphore
1972 2768
1973SV * 2769SV *
1974_get_state () 2770new (SV *klass, SV *count_ = 0)
1975 CODE: 2771 CODE:
1976{ 2772{
1977 struct io_state *data; 2773 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2774 AV *av = newAV ();
2775 SV **ary;
1978 2776
1979 RETVAL = newSV (sizeof (struct io_state)); 2777 /* unfortunately, building manually saves memory */
1980 data = (struct io_state *)SvPVX (RETVAL); 2778 Newx (ary, 2, SV *);
1981 SvCUR_set (RETVAL, sizeof (struct io_state)); 2779 AvALLOC (av) = ary;
1982 SvPOK_only (RETVAL); 2780 AvARRAY (av) = ary;
2781 AvMAX (av) = 1;
2782 AvFILLp (av) = 0;
2783 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
1983 2784
1984 data->errorno = errno; 2785 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
1985 data->laststype = PL_laststype;
1986 data->laststatval = PL_laststatval;
1987 data->statcache = PL_statcache;
1988} 2786}
1989 OUTPUT: 2787 OUTPUT:
1990 RETVAL 2788 RETVAL
1991 2789
2790SV *
2791count (SV *self)
2792 CODE:
2793 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2794 OUTPUT:
2795 RETVAL
2796
1992void 2797void
1993_set_state (char *data_) 2798up (SV *self, int adjust = 1)
1994 PROTOTYPE: $ 2799 ALIAS:
2800 adjust = 1
2801 CODE:
2802 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2803
2804void
2805down (SV *self)
2806 CODE:
2807 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2808
2809void
2810try (SV *self)
2811 PPCODE:
2812{
2813 AV *av = (AV *)SvRV (self);
2814 SV *count_sv = AvARRAY (av)[0];
2815 IV count = SvIVX (count_sv);
2816
2817 if (count > 0)
2818 {
2819 --count;
2820 SvIVX (count_sv) = count;
2821 XSRETURN_YES;
2822 }
2823 else
2824 XSRETURN_NO;
2825}
2826
2827void
2828waiters (SV *self)
2829 CODE:
2830{
2831 AV *av = (AV *)SvRV (self);
2832
2833 if (GIMME_V == G_SCALAR)
2834 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2835 else
2836 {
2837 int i;
2838 EXTEND (SP, AvFILLp (av) + 1 - 1);
2839 for (i = 1; i <= AvFILLp (av); ++i)
2840 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2841 }
2842}
2843
2844
2845MODULE = Coro::State PACKAGE = Coro::AnyEvent
2846
2847BOOT:
2848 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2849
2850void
2851_schedule (...)
1995 CODE: 2852 CODE:
1996{ 2853{
1997 struct io_state *data = (void *)data_; 2854 static int incede;
1998 2855
1999 errno = data->errorno; 2856 api_cede_notself (aTHX);
2000 PL_laststype = data->laststype;
2001 PL_laststatval = data->laststatval;
2002 PL_statcache = data->statcache;
2003}
2004 2857
2858 ++incede;
2859 while (coro_nready >= incede && api_cede (aTHX))
2860 ;
2861
2862 sv_setsv (sv_activity, &PL_sv_undef);
2863 if (coro_nready >= incede)
2864 {
2865 PUSHMARK (SP);
2866 PUTBACK;
2867 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2868 }
2869
2870 --incede;
2871}
2872
2873
2874MODULE = Coro::State PACKAGE = Coro::AIO
2875
2876void
2877_register (char *target, char *proto, SV *req)
2878 CODE:
2879{
2880 HV *st;
2881 GV *gvp;
2882 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2883 /* newXSproto doesn't return the CV on 5.8 */
2884 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2885 sv_setpv ((SV *)slf_cv, proto);
2886 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2887}
2888

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