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Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.314 by root, Thu Nov 20 03:24:39 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106
75/* 5.8.7 */ 107/* 5.8.7 */
76#ifndef SvRV_set 108#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 110#endif
79 111
… …
88/* prefer perl internal functions over our own? */ 120/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 121#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 123#endif
92 124
93/* The next macro should declare a variable stacklevel that contains and approximation 125/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 126 * portable way as possible. */
95 * and should be unique. */ 127#if __GNUC__ >= 4
96#define dSTACKLEVEL int stacklevel 128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
131# define dSTACKLEVEL volatile void *stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
98 134
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 136
101#if __GNUC__ >= 3 137#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
104#else 141#else
105# define attribute(x) 142# define attribute(x)
106# define BARRIER 143# define expect(expr,value) (expr)
144# define INLINE static
107#endif 145#endif
146
147#define expect_false(expr) expect ((expr) != 0, 0)
148#define expect_true(expr) expect ((expr) != 0, 1)
108 149
109#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
110 151
111#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
112 154
113#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
114static perl_mutex coro_mutex; 156# if CORO_PTHREAD
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
117#else
118# define LOCK (void)0
119# define UNLOCK (void)0
120#endif 158# endif
159#endif
121 160
122/* helper storage struct for Coro::AIO */ 161static double (*nvtime)(); /* so why doesn't it take void? */
123struct io_state
124{
125 int errorno;
126 I32 laststype;
127 int laststatval;
128 Stat_t statcache;
129};
130 162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
166
167static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174
175static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook;
178static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */
180
181/* async_pool helper stuff */
182static SV *sv_pool_rss;
183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_new;
189
190/* Coro::AnyEvent */
191static SV *sv_activity;
136 192
137static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 194static int cctx_count, cctx_idle;
139 195
196enum {
197 CC_MAPPED = 0x01,
198 CC_NOREUSE = 0x02, /* throw this away after tracing */
199 CC_TRACE = 0x04,
200 CC_TRACE_SUB = 0x08, /* trace sub calls */
201 CC_TRACE_LINE = 0x10, /* trace each statement */
202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
203};
204
140/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 206typedef struct coro_cctx
207{
142 struct coro_cctx *next; 208 struct coro_cctx *next;
143 209
144 /* the stack */ 210 /* the stack */
145 void *sptr; 211 void *sptr;
146 size_t ssize; 212 size_t ssize;
… …
149 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 215 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
150 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 216 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
151 JMPENV *top_env; 217 JMPENV *top_env;
152 coro_context cctx; 218 coro_context cctx;
153 219
220 U32 gen;
154#if CORO_USE_VALGRIND 221#if CORO_USE_VALGRIND
155 int valgrind_id; 222 int valgrind_id;
156#endif 223#endif
157 char inuse, mapped; 224 unsigned char flags;
158} coro_cctx; 225} coro_cctx;
159 226
160enum { 227enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 228 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 229 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 232};
166 233
167/* this is a structure representing a perl-level coroutine */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
168struct coro { 235typedef struct
169 /* the c coroutine allocated to this perl coroutine, if any */ 236{
170 coro_cctx *cctx; 237 SV *defsv;
171 238 AV *defav;
172 /* data associated with this coroutine (initial args) */ 239 SV *errsv;
173 AV *args; 240 SV *irsgv;
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */
177
178 /* optionally saved, might be zero */
179 AV *defav; /* @_ */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 GV *deffh; /* default filehandle */
183 SV *irssv; /* $/ */
184 SV *irssv_sv; /* real $/ cache */
185
186#define VAR(name,type) type name; 241#define VAR(name,type) type name;
187# include "state.h" 242# include "state.h"
188#undef VAR 243#undef VAR
244} perl_slots;
245
246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
247
248/* this is a structure representing a perl-level coroutine */
249struct coro {
250 /* the C coroutine allocated to this perl coroutine, if any */
251 coro_cctx *cctx;
252
253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
255 AV *mainstack;
256 perl_slots *slot; /* basically the saved sp */
257
258 CV *startcv; /* the CV to execute */
259 AV *args; /* data associated with this coroutine (initial args) */
260 int refcnt; /* coroutines are refcounted, yes */
261 int flags; /* CF_ flags */
262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
264
265 /* statistics */
266 int usecount; /* number of transfers to this coro */
189 267
190 /* coro process data */ 268 /* coro process data */
191 int prio; 269 int prio;
270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
272
273 /* async_pool */
274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
277
278 /* linked list */
279 struct coro *next, *prev;
192}; 280};
193 281
194typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
195typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
196 289
197/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
198 291
199#define PRIO_MAX 3 292#define PRIO_MAX 3
200#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
203#define PRIO_IDLE -3 296#define PRIO_IDLE -3
204#define PRIO_MIN -4 297#define PRIO_MIN -4
205 298
206/* for Coro.pm */ 299/* for Coro.pm */
207static SV *coro_current; 300static SV *coro_current;
301static SV *coro_readyhook;
208static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
209static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first;
305#define coro_nready coroapi.nready
210 306
211/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
346}
212 347
213static AV * 348static AV *
214coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
215{ 350{
216 AV *padlist = CvPADLIST (cv); 351 AV *padlist = CvPADLIST (cv);
217 AV *newpadlist, *newpad; 352 AV *newpadlist, *newpad;
218 353
219 newpadlist = newAV (); 354 newpadlist = newAV ();
220 AvREAL_off (newpadlist); 355 AvREAL_off (newpadlist);
221#if PERL_VERSION_ATLEAST (5,9,0) 356#if PERL_VERSION_ATLEAST (5,10,0)
222 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 357 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
223#else 358#else
224 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 359 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
225#endif 360#endif
226 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 361 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
227 --AvFILLp (padlist); 362 --AvFILLp (padlist);
228 363
229 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 364 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
230 av_store (newpadlist, 1, (SV *)newpad); 365 av_store (newpadlist, 1, (SV *)newpad);
231 366
232 return newpadlist; 367 return newpadlist;
233} 368}
234 369
… …
264 399
265 /* casting is fun. */ 400 /* casting is fun. */
266 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 401 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267 free_padlist (aTHX_ padlist); 402 free_padlist (aTHX_ padlist);
268 403
269 SvREFCNT_dec (av); 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
270 405
271 return 0; 406 return 0;
272} 407}
273 408
409#define CORO_MAGIC_type_cv 26
274#define PERL_MAGIC_coro PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
275 411
276static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 412static MGVTBL coro_cv_vtbl = {
413 0, 0, 0, 0,
414 coro_cv_free
415};
277 416
278#define CORO_MAGIC(cv) \ 417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
279 SvMAGIC (cv) \ 419 ? SvMAGIC (sv) \
280 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 420 : mg_find (sv, type))
281 ? SvMAGIC (cv) \ 421
282 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 422#define CORO_MAGIC(sv, type) \
423 (expect_true (SvMAGIC (sv)) \
424 ? CORO_MAGIC_NN (sv, type) \
283 : 0 425 : 0)
426
427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
429
430INLINE struct coro *
431SvSTATE_ (pTHX_ SV *coro)
432{
433 HV *stash;
434 MAGIC *mg;
435
436 if (SvROK (coro))
437 coro = SvRV (coro);
438
439 if (expect_false (SvTYPE (coro) != SVt_PVHV))
440 croak ("Coro::State object required");
441
442 stash = SvSTASH (coro);
443 if (expect_false (stash != coro_stash && stash != coro_state_stash))
444 {
445 /* very slow, but rare, check */
446 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
447 croak ("Coro::State object required");
448 }
449
450 mg = CORO_MAGIC_state (coro);
451 return (struct coro *)mg->mg_ptr;
452}
453
454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
284 459
285/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
286static void 461static void
287get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
288{ 463{
289 MAGIC *mg = CORO_MAGIC (cv); 464 MAGIC *mg = CORO_MAGIC_cv (cv);
290 AV *av; 465 AV *av;
291 466
292 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 467 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 468 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294 else 469 else
295 { 470 {
296#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
297 /* this is probably cleaner, but also slower? */ 472 /* this is probably cleaner? but also slower! */
473 /* in practise, it seems to be less stable */
298 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
299 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
300 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
301 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
302#else 478#else
303 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
306} 482}
307 483
308static void 484static void
309put_padlist (pTHX_ CV *cv) 485put_padlist (pTHX_ CV *cv)
310{ 486{
311 MAGIC *mg = CORO_MAGIC (cv); 487 MAGIC *mg = CORO_MAGIC_cv (cv);
312 AV *av; 488 AV *av;
313 489
314 if (!mg) 490 if (expect_false (!mg))
315 { 491 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318 mg->mg_virtual = &vtbl_coro;
319 mg->mg_obj = (SV *)newAV ();
320 }
321 492
322 av = (AV *)mg->mg_obj; 493 av = (AV *)mg->mg_obj;
323 494
324 if (AvFILLp (av) >= AvMAX (av)) 495 if (expect_false (AvFILLp (av) >= AvMAX (av)))
325 av_extend (av, AvMAX (av) + 1); 496 av_extend (av, AvMAX (av) + 1);
326 497
327 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 498 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328} 499}
329 500
330/** load & save, init *******************************************************/ 501/** load & save, init *******************************************************/
331 502
332#define SB do {
333#define SE } while (0)
334
335#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336
337static void 503static void
338load_perl (pTHX_ Coro__State c) 504load_perl (pTHX_ Coro__State c)
339{ 505{
506 perl_slots *slot = c->slot;
507 c->slot = 0;
508
509 PL_mainstack = c->mainstack;
510
511 GvSV (PL_defgv) = slot->defsv;
512 GvAV (PL_defgv) = slot->defav;
513 GvSV (PL_errgv) = slot->errsv;
514 GvSV (irsgv) = slot->irsgv;
515
340#define VAR(name,type) PL_ ## name = c->name; 516 #define VAR(name,type) PL_ ## name = slot->name;
341# include "state.h" 517 # include "state.h"
342#undef VAR 518 #undef VAR
343
344 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349 if (c->irssv)
350 {
351 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352 {
353 SvREFCNT_dec (c->irssv);
354 c->irssv = 0;
355 }
356 else
357 {
358 REPLACE_SV (PL_rs, c->irssv);
359 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360 sv_setsv (c->irssv_sv, PL_rs);
361 }
362 }
363 519
364 { 520 {
365 dSP; 521 dSP;
522
366 CV *cv; 523 CV *cv;
367 524
368 /* now do the ugly restore mess */ 525 /* now do the ugly restore mess */
369 while ((cv = (CV *)POPs)) 526 while (expect_true (cv = (CV *)POPs))
370 { 527 {
371 put_padlist (aTHX_ cv); /* mark this padlist as available */ 528 put_padlist (aTHX_ cv); /* mark this padlist as available */
372 CvDEPTH (cv) = PTR2IV (POPs); 529 CvDEPTH (cv) = PTR2IV (POPs);
373 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
374 } 531 }
375 532
376 PUTBACK; 533 PUTBACK;
377 } 534 }
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D 535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
379} 538}
380 539
381static void 540static void
382save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
383{ 542{
384 assert (!PL_comppad || AvARRAY (PL_comppad));//D 543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
385 { 546 {
386 dSP; 547 dSP;
387 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
388 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
389 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
391 /* 552 /*
392 * the worst thing you can imagine happens first - we have to save 553 * the worst thing you can imagine happens first - we have to save
393 * (and reinitialize) all cv's in the whole callchain :( 554 * (and reinitialize) all cv's in the whole callchain :(
394 */ 555 */
395 556
396 EXTEND (SP, 3 + 1);
397 PUSHs (Nullsv); 557 XPUSHs (Nullsv);
398 /* this loop was inspired by pp_caller */ 558 /* this loop was inspired by pp_caller */
399 for (;;) 559 for (;;)
400 { 560 {
401 while (cxix >= 0) 561 while (expect_true (cxix >= 0))
402 { 562 {
403 PERL_CONTEXT *cx = &ccstk[cxix--]; 563 PERL_CONTEXT *cx = &ccstk[cxix--];
404 564
405 if (CxTYPE (cx) == CXt_SUB) 565 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406 { 566 {
407 CV *cv = cx->blk_sub.cv; 567 CV *cv = cx->blk_sub.cv;
408 568
409 if (CvDEPTH (cv)) 569 if (expect_true (CvDEPTH (cv)))
410 { 570 {
411 EXTEND (SP, 3); 571 EXTEND (SP, 3);
412 PUSHs ((SV *)CvPADLIST (cv)); 572 PUSHs ((SV *)CvPADLIST (cv));
413 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 573 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
414 PUSHs ((SV *)cv); 574 PUSHs ((SV *)cv);
415 575
416 CvDEPTH (cv) = 0; 576 CvDEPTH (cv) = 0;
417 get_padlist (aTHX_ cv); 577 get_padlist (aTHX_ cv);
418 } 578 }
419 } 579 }
420 } 580 }
421 581
422 if (top_si->si_type == PERLSI_MAIN) 582 if (expect_true (top_si->si_type == PERLSI_MAIN))
423 break; 583 break;
424 584
425 top_si = top_si->si_prev; 585 top_si = top_si->si_prev;
426 ccstk = top_si->si_cxstack; 586 ccstk = top_si->si_cxstack;
427 cxix = top_si->si_cxix; 587 cxix = top_si->si_cxix;
428 } 588 }
429 589
430 PUTBACK; 590 PUTBACK;
431 } 591 }
432 592
433 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 593 /* allocate some space on the context stack for our purposes */
434 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 594 /* we manually unroll here, as usually 2 slots is enough */
435 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 595 if (SLOT_COUNT >= 1) CXINC;
436 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 596 if (SLOT_COUNT >= 2) CXINC;
437 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 597 if (SLOT_COUNT >= 3) CXINC;
598 {
599 int i;
600 for (i = 3; i < SLOT_COUNT; ++i)
601 CXINC;
602 }
603 cxstack_ix -= SLOT_COUNT; /* undo allocation */
438 604
605 c->mainstack = PL_mainstack;
606
607 {
608 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
609
610 slot->defav = GvAV (PL_defgv);
611 slot->defsv = DEFSV;
612 slot->errsv = ERRSV;
613 slot->irsgv = GvSV (irsgv);
614
439#define VAR(name,type)c->name = PL_ ## name; 615 #define VAR(name,type) slot->name = PL_ ## name;
440# include "state.h" 616 # include "state.h"
441#undef VAR 617 #undef VAR
618 }
442} 619}
443 620
444/* 621/*
445 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
446 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
447 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
448 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
449 */ 626 */
450#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
451# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
452#else 629#else
453static void 630static void
454coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
455{ 632{
456 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 633 PL_curstackinfo = new_stackinfo(32, 8);
457 PL_curstackinfo->si_type = PERLSI_MAIN; 634 PL_curstackinfo->si_type = PERLSI_MAIN;
458 PL_curstack = PL_curstackinfo->si_stack; 635 PL_curstack = PL_curstackinfo->si_stack;
459 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 636 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460 637
461 PL_stack_base = AvARRAY(PL_curstack); 638 PL_stack_base = AvARRAY(PL_curstack);
462 PL_stack_sp = PL_stack_base; 639 PL_stack_sp = PL_stack_base;
463 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 640 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464 641
465 New(50,PL_tmps_stack,128,SV*); 642 New(50,PL_tmps_stack,32,SV*);
466 PL_tmps_floor = -1; 643 PL_tmps_floor = -1;
467 PL_tmps_ix = -1; 644 PL_tmps_ix = -1;
468 PL_tmps_max = 128; 645 PL_tmps_max = 32;
469 646
470 New(54,PL_markstack,32,I32); 647 New(54,PL_markstack,16,I32);
471 PL_markstack_ptr = PL_markstack; 648 PL_markstack_ptr = PL_markstack;
472 PL_markstack_max = PL_markstack + 32; 649 PL_markstack_max = PL_markstack + 16;
473 650
474#ifdef SET_MARK_OFFSET 651#ifdef SET_MARK_OFFSET
475 SET_MARK_OFFSET; 652 SET_MARK_OFFSET;
476#endif 653#endif
477 654
478 New(54,PL_scopestack,32,I32); 655 New(54,PL_scopestack,8,I32);
479 PL_scopestack_ix = 0; 656 PL_scopestack_ix = 0;
480 PL_scopestack_max = 32; 657 PL_scopestack_max = 8;
481 658
482 New(54,PL_savestack,64,ANY); 659 New(54,PL_savestack,24,ANY);
483 PL_savestack_ix = 0; 660 PL_savestack_ix = 0;
484 PL_savestack_max = 64; 661 PL_savestack_max = 24;
485 662
486#if !PERL_VERSION_ATLEAST (5,9,0) 663#if !PERL_VERSION_ATLEAST (5,10,0)
487 New(54,PL_retstack,16,OP*); 664 New(54,PL_retstack,4,OP*);
488 PL_retstack_ix = 0; 665 PL_retstack_ix = 0;
489 PL_retstack_max = 16; 666 PL_retstack_max = 4;
490#endif 667#endif
491} 668}
492#endif 669#endif
493 670
494/* 671/*
495 * destroy the stacks, the callchain etc... 672 * destroy the stacks, the callchain etc...
496 */ 673 */
497static void 674static void
498coro_destroy_stacks (pTHX) 675coro_destruct_stacks (pTHX)
499{ 676{
500 if (!IN_DESTRUCT)
501 {
502 /* restore all saved variables and stuff */
503 LEAVE_SCOPE (0);
504 assert (PL_tmps_floor == -1);
505
506 /* free all temporaries */
507 FREETMPS;
508 assert (PL_tmps_ix == -1);
509
510 /* unwind all extra stacks */
511 POPSTACK_TO (PL_mainstack);
512
513 /* unwind main stack */
514 dounwind (-1);
515 }
516
517 while (PL_curstackinfo->si_next) 677 while (PL_curstackinfo->si_next)
518 PL_curstackinfo = PL_curstackinfo->si_next; 678 PL_curstackinfo = PL_curstackinfo->si_next;
519 679
520 while (PL_curstackinfo) 680 while (PL_curstackinfo)
521 { 681 {
… …
531 691
532 Safefree (PL_tmps_stack); 692 Safefree (PL_tmps_stack);
533 Safefree (PL_markstack); 693 Safefree (PL_markstack);
534 Safefree (PL_scopestack); 694 Safefree (PL_scopestack);
535 Safefree (PL_savestack); 695 Safefree (PL_savestack);
536#if !PERL_VERSION_ATLEAST (5,9,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
537 Safefree (PL_retstack); 697 Safefree (PL_retstack);
538#endif 698#endif
539} 699}
540 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
710static size_t
711coro_rss (pTHX_ struct coro *coro)
712{
713 size_t rss = sizeof (*coro);
714
715 if (coro->mainstack)
716 {
717 if (coro->flags & CF_RUNNING)
718 {
719 #define SYM(sym) PL_ ## sym
720 CORO_RSS;
721 #undef SYM
722 }
723 else
724 {
725 #define SYM(sym) coro->slot->sym
726 CORO_RSS;
727 #undef SYM
728 }
729 }
730
731 return rss;
732}
733
541/** coroutine stack handling ************************************************/ 734/** coroutine stack handling ************************************************/
542 735
736static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
737static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
738static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
739
740/* apparently < 5.8.8 */
741#ifndef MgPV_nolen_const
742#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
743 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
744 (const char*)(mg)->mg_ptr)
745#endif
746
747/*
748 * This overrides the default magic get method of %SIG elements.
749 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
750 * and instead of tryign to save and restore the hash elements, we just provide
751 * readback here.
752 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
753 * not expecting this to actually change the hook. This is a potential problem
754 * when a schedule happens then, but we ignore this.
755 */
543static void 756static int
757coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
758{
759 const char *s = MgPV_nolen_const (mg);
760
761 if (*s == '_')
762 {
763 SV **svp = 0;
764
765 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
766 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
767
768 if (svp)
769 {
770 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
771 return 0;
772 }
773 }
774
775 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
776}
777
778static int
779coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
780{
781 const char *s = MgPV_nolen_const (mg);
782
783 if (*s == '_')
784 {
785 SV **svp = 0;
786
787 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
788 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
789
790 if (svp)
791 {
792 SV *old = *svp;
793 *svp = 0;
794 SvREFCNT_dec (old);
795 return 0;
796 }
797 }
798
799 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
800}
801
802static int
803coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
804{
805 const char *s = MgPV_nolen_const (mg);
806
807 if (*s == '_')
808 {
809 SV **svp = 0;
810
811 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
812 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813
814 if (svp)
815 {
816 SV *old = *svp;
817 *svp = newSVsv (sv);
818 SvREFCNT_dec (old);
819 return 0;
820 }
821 }
822
823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
824}
825
826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
544setup_coro (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
545{ 843{
546 /* 844 /*
547 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
548 */ 846 */
549 coro_init_stacks (aTHX); 847 coro_init_stacks (aTHX);
550 848
849 PL_runops = RUNOPS_DEFAULT;
551 PL_curcop = &PL_compiling; 850 PL_curcop = &PL_compiling;
552 PL_in_eval = EVAL_NULL; 851 PL_in_eval = EVAL_NULL;
553 PL_comppad = 0; 852 PL_comppad = 0;
554 PL_curpm = 0; 853 PL_curpm = 0;
854 PL_curpad = 0;
555 PL_localizing = 0; 855 PL_localizing = 0;
556 PL_dirty = 0; 856 PL_dirty = 0;
557 PL_restartop = 0; 857 PL_restartop = 0;
858#if PERL_VERSION_ATLEAST (5,10,0)
859 PL_parser = 0;
860#endif
861
862 /* recreate the die/warn hooks */
863 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
864 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
865
866 GvSV (PL_defgv) = newSV (0);
867 GvAV (PL_defgv) = coro->args; coro->args = 0;
868 GvSV (PL_errgv) = newSV (0);
869 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
870 PL_rs = newSVsv (GvSV (irsgv));
871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
558 872
559 { 873 {
560 dSP; 874 dSP;
561 LOGOP myop; 875 UNOP myop;
562 876
563 SvREFCNT_dec (GvAV (PL_defgv));
564 GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
567 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
568 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
569 881
570 PUSHMARK (SP); 882 PUSHMARK (SP);
571 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 883 PUSHs ((SV *)coro->startcv);
572 PUTBACK; 884 PUTBACK;
573 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
574 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575 SPAGAIN;
576 } 887 }
577 888
578 ENTER; /* necessary e.g. for dounwind */ 889 /* this newly created coroutine might be run on an existing cctx which most
579} 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
891 */
892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
580 894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
905}
906
581static void 907static void
908coro_destruct (pTHX_ struct coro *coro)
909{
910 if (!IN_DESTRUCT)
911 {
912 /* restore all saved variables and stuff */
913 LEAVE_SCOPE (0);
914 assert (PL_tmps_floor == -1);
915
916 /* free all temporaries */
917 FREETMPS;
918 assert (PL_tmps_ix == -1);
919
920 /* unwind all extra stacks */
921 POPSTACK_TO (PL_mainstack);
922
923 /* unwind main stack */
924 dounwind (-1);
925 }
926
927 SvREFCNT_dec (GvSV (PL_defgv));
928 SvREFCNT_dec (GvAV (PL_defgv));
929 SvREFCNT_dec (GvSV (PL_errgv));
930 SvREFCNT_dec (PL_defoutgv);
931 SvREFCNT_dec (PL_rs);
932 SvREFCNT_dec (GvSV (irsgv));
933
934 SvREFCNT_dec (PL_diehook);
935 SvREFCNT_dec (PL_warnhook);
936
937 SvREFCNT_dec (coro->saved_deffh);
938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
941
942 coro_destruct_stacks (aTHX);
943}
944
945INLINE void
582free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
583{ 947{
584 if (coro_mortal) 948 if (expect_true (coro_mortal))
585 { 949 {
586 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
587 coro_mortal = 0; 951 coro_mortal = 0;
588 } 952 }
589} 953}
590 954
591/* inject a fake call to Coro::State::_cctx_init into the execution */ 955static int
956runops_trace (pTHX)
957{
958 COP *oldcop = 0;
959 int oldcxix = -2;
960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
961 coro_cctx *cctx = coro->cctx;
962
963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
964 {
965 PERL_ASYNC_CHECK ();
966
967 if (cctx->flags & CC_TRACE_ALL)
968 {
969 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
970 {
971 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972 SV **bot, **top;
973 AV *av = newAV (); /* return values */
974 SV **cb;
975 dSP;
976
977 GV *gv = CvGV (cx->blk_sub.cv);
978 SV *fullname = sv_2mortal (newSV (0));
979 if (isGV (gv))
980 gv_efullname3 (fullname, gv, 0);
981
982 bot = PL_stack_base + cx->blk_oldsp + 1;
983 top = cx->blk_gimme == G_ARRAY ? SP + 1
984 : cx->blk_gimme == G_SCALAR ? bot + 1
985 : bot;
986
987 av_extend (av, top - bot);
988 while (bot < top)
989 av_push (av, SvREFCNT_inc_NN (*bot++));
990
991 PL_runops = RUNOPS_DEFAULT;
992 ENTER;
993 SAVETMPS;
994 EXTEND (SP, 3);
995 PUSHMARK (SP);
996 PUSHs (&PL_sv_no);
997 PUSHs (fullname);
998 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
999 PUTBACK;
1000 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1001 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1002 SPAGAIN;
1003 FREETMPS;
1004 LEAVE;
1005 PL_runops = runops_trace;
1006 }
1007
1008 if (oldcop != PL_curcop)
1009 {
1010 oldcop = PL_curcop;
1011
1012 if (PL_curcop != &PL_compiling)
1013 {
1014 SV **cb;
1015
1016 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1017 {
1018 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1019
1020 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1021 {
1022 runops_proc_t old_runops = PL_runops;
1023 dSP;
1024 GV *gv = CvGV (cx->blk_sub.cv);
1025 SV *fullname = sv_2mortal (newSV (0));
1026
1027 if (isGV (gv))
1028 gv_efullname3 (fullname, gv, 0);
1029
1030 PL_runops = RUNOPS_DEFAULT;
1031 ENTER;
1032 SAVETMPS;
1033 EXTEND (SP, 3);
1034 PUSHMARK (SP);
1035 PUSHs (&PL_sv_yes);
1036 PUSHs (fullname);
1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1038 PUTBACK;
1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1041 SPAGAIN;
1042 FREETMPS;
1043 LEAVE;
1044 PL_runops = runops_trace;
1045 }
1046
1047 oldcxix = cxstack_ix;
1048 }
1049
1050 if (cctx->flags & CC_TRACE_LINE)
1051 {
1052 dSP;
1053
1054 PL_runops = RUNOPS_DEFAULT;
1055 ENTER;
1056 SAVETMPS;
1057 EXTEND (SP, 3);
1058 PL_runops = RUNOPS_DEFAULT;
1059 PUSHMARK (SP);
1060 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1061 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1062 PUTBACK;
1063 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1064 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1065 SPAGAIN;
1066 FREETMPS;
1067 LEAVE;
1068 PL_runops = runops_trace;
1069 }
1070 }
1071 }
1072 }
1073 }
1074
1075 TAINT_NOT;
1076 return 0;
1077}
1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1082static void
1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084{
1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1086 ta->next = 0;
1087}
1088
1089static int
1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091{
1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
592static void NOINLINE 1098static void NOINLINE
593prepare_cctx (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
594{ 1100{
595 dSP;
596 LOGOP myop;
597
598 Zero (&myop, 1, LOGOP);
599 myop.op_next = PL_op;
600 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601
602 PUSHMARK (SP);
603 EXTEND (SP, 2);
604 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
605 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
606 PUTBACK;
607 PL_op = (OP *)&myop;
608 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609 SPAGAIN;
610}
611
612static void
613coro_run (void *arg)
614{
615 dTHX;
616
617 /* coro_run is the alternative tail of transfer(), so unlock here. */
618 UNLOCK;
619
620 /*
621 * this is a _very_ stripped down perl interpreter ;)
622 */
623 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
624 1102
1103 if (cctx->flags & CC_TRACE)
1104 PL_runops = runops_trace;
1105
1106 /* we already must be executing an SLF op, there is no other valid way
1107 * that can lead to creation of a new cctx */
1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1110
1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1112 cctx_ssl_cctx = cctx;
1113 cctx_ssl_frame = slf_frame;
1114
1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1116 slf_frame.check = slf_check_set_stacklevel;
1117}
1118
1119/* the tail of transfer: execute stuff we can only do after a transfer */
1120INLINE void
1121transfer_tail (pTHX)
1122{
1123 free_coro_mortal (aTHX);
1124}
1125
1126/*
1127 * this is a _very_ stripped down perl interpreter ;)
1128 */
1129static void
1130cctx_run (void *arg)
1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
1138 dTHX;
1139
1140 /* normally we would need to skip the entersub here */
1141 /* not doing so will re-execute it, which is exactly what we want */
1142 /* PL_nop = PL_nop->op_next */
1143
625 /* inject call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
626 prepare_cctx (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
627 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
628 /* somebody will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
629 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
630 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
631 1157
632 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1158 /*
633 abort (); 1159 * If perl-run returns we assume exit() was being called or the coro
1160 * fell off the end, which seems to be the only valid (non-bug)
1161 * reason for perl_run to return. We try to exit by jumping to the
1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
1163 * coroutine as Coro has no such concept
1164 */
1165 PL_top_env = main_top_env;
1166 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167 }
634} 1168}
635 1169
636static coro_cctx * 1170static coro_cctx *
637cctx_new () 1171cctx_new ()
638{ 1172{
639 coro_cctx *cctx; 1173 coro_cctx *cctx;
1174
1175 ++cctx_count;
1176 New (0, cctx, 1, coro_cctx);
1177
1178 cctx->gen = cctx_gen;
1179 cctx->flags = 0;
1180 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1181
1182 return cctx;
1183}
1184
1185/* create a new cctx only suitable as source */
1186static coro_cctx *
1187cctx_new_empty ()
1188{
1189 coro_cctx *cctx = cctx_new ();
1190
1191 cctx->sptr = 0;
1192 coro_create (&cctx->cctx, 0, 0, 0, 0);
1193
1194 return cctx;
1195}
1196
1197/* create a new cctx suitable as destination/running a perl interpreter */
1198static coro_cctx *
1199cctx_new_run ()
1200{
1201 coro_cctx *cctx = cctx_new ();
640 void *stack_start; 1202 void *stack_start;
641 size_t stack_size; 1203 size_t stack_size;
642 1204
643 ++cctx_count;
644
645 Newz (0, cctx, 1, coro_cctx);
646
647#if HAVE_MMAP 1205#if HAVE_MMAP
648
649 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1206 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
651 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1208 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652 1209
653 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
654 { 1211 {
655# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
656 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657# endif 1214 #endif
658 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
659 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660 cctx->mapped = 1; 1217 cctx->flags |= CC_MAPPED;
661 } 1218 }
662 else 1219 else
663#endif 1220#endif
664 { 1221 {
665 cctx->ssize = coro_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
666 New (0, cctx->sptr, coro_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
667 1224
668 if (!cctx->sptr) 1225 if (!cctx->sptr)
669 { 1226 {
670 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
671 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
672 } 1229 }
673 1230
674 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
675 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
676 } 1233 }
677 1234
678 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1235 #if CORO_USE_VALGRIND
1236 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1237 #endif
1238
679 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1239 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680 1240
681 return cctx; 1241 return cctx;
682} 1242}
683 1243
684static void 1244static void
… …
686{ 1246{
687 if (!cctx) 1247 if (!cctx)
688 return; 1248 return;
689 1249
690 --cctx_count; 1250 --cctx_count;
1251 coro_destroy (&cctx->cctx);
691 1252
1253 /* coro_transfer creates new, empty cctx's */
1254 if (cctx->sptr)
1255 {
692#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
693 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694#endif 1258 #endif
695 1259
696#if HAVE_MMAP 1260#if HAVE_MMAP
697 if (cctx->mapped) 1261 if (cctx->flags & CC_MAPPED)
698 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
699 else 1263 else
700#endif 1264#endif
701 Safefree (cctx->sptr); 1265 Safefree (cctx->sptr);
1266 }
702 1267
703 Safefree (cctx); 1268 Safefree (cctx);
704} 1269}
1270
1271/* wether this cctx should be destructed */
1272#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
705 1273
706static coro_cctx * 1274static coro_cctx *
707cctx_get (pTHX) 1275cctx_get (pTHX)
708{ 1276{
709 while (cctx_first) 1277 while (expect_true (cctx_first))
710 { 1278 {
711 coro_cctx *cctx = cctx_first; 1279 coro_cctx *cctx = cctx_first;
712 cctx_first = cctx->next; 1280 cctx_first = cctx->next;
713 --cctx_idle; 1281 --cctx_idle;
714 1282
715 if (cctx->ssize >= coro_stacksize) 1283 if (expect_true (!CCTX_EXPIRED (cctx)))
716 return cctx; 1284 return cctx;
717 1285
718 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
719 } 1287 }
720 1288
721 PL_op = PL_op->op_next;
722 return cctx_new (); 1289 return cctx_new_run ();
723} 1290}
724 1291
725static void 1292static void
726cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
727{ 1294{
1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1296
728 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
729 if (cctx_idle >= MAX_IDLE_CCTX) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
730 { 1299 {
731 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
732 cctx_first = first->next; 1301 cctx_first = first->next;
733 --cctx_idle; 1302 --cctx_idle;
734 1303
735 assert (!first->inuse);
736 cctx_destroy (first); 1304 cctx_destroy (first);
737 } 1305 }
738 1306
739 ++cctx_idle; 1307 ++cctx_idle;
740 cctx->next = cctx_first; 1308 cctx->next = cctx_first;
741 cctx_first = cctx; 1309 cctx_first = cctx;
742} 1310}
743 1311
744/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
745 1313
746/* never call directly, always through the coro_state_transfer global variable */ 1314static void
747static void NOINLINE
748transfer (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1319 if (expect_true (prev != next))
1320 {
1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1323
1324 if (expect_false (next->flags & CF_RUNNING))
1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1326
1327 if (expect_false (next->flags & CF_DESTROYED))
1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1329
1330#if !PERL_VERSION_ATLEAST (5,10,0)
1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1333#endif
1334 }
1335}
1336
1337/* always use the TRANSFER macro */
1338static void NOINLINE /* noinline so we have a fixed stackframe */
1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
749{ 1340{
750 dSTACKLEVEL; 1341 dSTACKLEVEL;
751 1342
752 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
753 if (!next) 1344 if (expect_false (!next))
754 { 1345 {
755 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757 } 1348 }
758 else if (prev != next) 1349 else if (expect_true (prev != next))
759 { 1350 {
760 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
761 1352
762 if (prev->flags & CF_NEW) 1353 if (expect_false (prev->flags & CF_NEW))
763 { 1354 {
764 /* create a new empty context */ 1355 /* create a new empty/source context */
765 Newz (0, prev->cctx, 1, coro_cctx); 1356 prev->cctx = cctx_new_empty ();
766 prev->cctx->inuse = 1;
767 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
768 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
769 } 1359 }
770 1360
771 /*TODO: must not croak here */
772 if (!prev->flags & CF_RUNNING)
773 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775 if (next->flags & CF_RUNNING)
776 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778 if (next->flags & CF_DESTROYED)
779 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
782 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
783 1363
784 LOCK; 1364 /* first get rid of the old state */
1365 save_perl (aTHX_ prev);
785 1366
786 if (next->flags & CF_NEW) 1367 if (expect_false (next->flags & CF_NEW))
787 { 1368 {
788 /* need to start coroutine */ 1369 /* need to start coroutine */
789 next->flags &= ~CF_NEW; 1370 next->flags &= ~CF_NEW;
790 /* first get rid of the old state */
791 save_perl (aTHX_ prev);
792 /* setup coroutine call */ 1371 /* setup coroutine call */
793 setup_coro (aTHX_ next); 1372 coro_setup (aTHX_ next);
794 /* need a new stack */
795 assert (!next->cctx);
796 } 1373 }
797 else 1374 else
1375 load_perl (aTHX_ next);
1376
1377 prev__cctx = prev->cctx;
1378
1379 /* possibly untie and reuse the cctx */
1380 if (expect_true (
1381 prev__cctx->idle_sp == STACKLEVEL
1382 && !(prev__cctx->flags & CC_TRACE)
1383 && !force_cctx
1384 ))
798 { 1385 {
799 /* coroutine already started */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
800 save_perl (aTHX_ prev); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
801 load_perl (aTHX_ next); 1388
1389 prev->cctx = 0;
1390
1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1392 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1393 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1394 if (!next->cctx)
1395 next->cctx = cctx_get (aTHX);
1396
1397 cctx_put (prev__cctx);
802 } 1398 }
803 1399
804 prev__cctx = prev->cctx; 1400 ++next->usecount;
805 1401
806 /* possibly "free" the cctx */
807 if (prev__cctx->idle_sp == STACKLEVEL)
808 {
809 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
810 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811
812 prev->cctx = 0;
813
814 cctx_put (prev__cctx);
815 prev__cctx->inuse = 0;
816 }
817
818 if (!next->cctx) 1402 if (expect_true (!next->cctx))
819 {
820 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
821 assert (!next->cctx->inuse);
822 next->cctx->inuse = 1;
823 }
824 1404
825 if (prev__cctx != next->cctx) 1405 if (expect_false (prev__cctx != next->cctx))
826 { 1406 {
827 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
828 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
829 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830 } 1410 }
831 1411
832 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
833 UNLOCK;
834 } 1413 }
835} 1414}
836 1415
837struct transfer_args 1416#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
838{
839 struct coro *prev, *next;
840};
841
842#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843 1418
844/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
845 1420
846static int 1421static int
847coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
848{ 1423{
849 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
850 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
851 1429
852 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
853 1431
854 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
855 { 1433 {
856 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
857 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
858 LOCK;
859 --coro_nready; 1436 --coro_nready;
860 UNLOCK;
861 } 1437 }
862 else 1438 else
863 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
864 1440
865 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
866 { 1442 {
867 struct coro temp; 1443 struct coro temp;
868 1444
869 assert (!(coro->flags & CF_RUNNING)); 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
870
871 Zero (&temp, 1, struct coro);
872 temp.save = CORO_SAVE_DEF;
873
874 if (coro->flags & CF_RUNNING)
875 croak ("FATAL: tried to destroy currently running coroutine");
876 1446
877 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
878 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
879 1449
880 coro_destroy_stacks (aTHX); 1450 coro_destruct (aTHX_ coro);
881 1451
882 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1452 load_perl (aTHX_ &temp);
883 1453
884 coro->mainstack = 0; 1454 coro->slot = 0;
885 } 1455 }
886 1456
887 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
888 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1461
1462 if (coro->next) coro->next->prev = coro->prev;
1463 if (coro->prev) coro->prev->next = coro->next;
1464 if (coro == coro_first) coro_first = coro->next;
889 1465
890 return 1; 1466 return 1;
891} 1467}
892 1468
893static int 1469static int
894coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1470coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895{ 1471{
896 struct coro *coro = (struct coro *)mg->mg_ptr; 1472 struct coro *coro = (struct coro *)mg->mg_ptr;
897 mg->mg_ptr = 0; 1473 mg->mg_ptr = 0;
1474
1475 coro->hv = 0;
898 1476
899 if (--coro->refcnt < 0) 1477 if (--coro->refcnt < 0)
900 { 1478 {
901 coro_state_destroy (aTHX_ coro); 1479 coro_state_destroy (aTHX_ coro);
902 Safefree (coro); 1480 Safefree (coro);
… …
924#else 1502#else
925# define MGf_DUP 0 1503# define MGf_DUP 0
926#endif 1504#endif
927}; 1505};
928 1506
929static struct coro *
930SvSTATE_ (pTHX_ SV *coro)
931{
932 HV *stash;
933 MAGIC *mg;
934
935 if (SvROK (coro))
936 coro = SvRV (coro);
937
938 stash = SvSTASH (coro);
939 if (stash != coro_stash && stash != coro_state_stash)
940 {
941 /* very slow, but rare, check */
942 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943 croak ("Coro::State object required");
944 }
945
946 mg = CORO_MAGIC (coro);
947 return (struct coro *)mg->mg_ptr;
948}
949
950#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952static void 1507static void
953prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
954{ 1509{
955 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
956 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1512 TRANSFER_CHECK (*ta);
957} 1513}
958 1514
959static void 1515static void
960api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
961{ 1517{
962 dTHX;
963 struct transfer_args ta; 1518 struct coro_transfer_args ta;
964 1519
965 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966 TRANSFER (ta); 1521 TRANSFER (ta, 1);
967} 1522}
968 1523
969static int 1524/*****************************************************************************/
970api_save (SV *coro_sv, int new_save) 1525/* gensub: simple closure generation utility */
971{
972 dTHX;
973 struct coro *coro = SvSTATE (coro_sv);
974 int old_save = coro->save;
975 1526
976 if (new_save >= 0) 1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
977 coro->save = new_save;
978 1528
979 return old_save; 1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
980} 1545}
981 1546
982/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
983 1548
984static void 1549INLINE void
985coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
986{ 1551{
987 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
988} 1553}
989 1554
990static SV * 1555INLINE SV *
991coro_deq (pTHX_ int min_prio) 1556coro_deq (pTHX)
992{ 1557{
993 int prio = PRIO_MAX - PRIO_MIN; 1558 int prio;
994 1559
995 min_prio -= PRIO_MIN;
996 if (min_prio < 0)
997 min_prio = 0;
998
999 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000 if (AvFILLp (coro_ready [prio]) >= 0) 1561 if (AvFILLp (coro_ready [prio]) >= 0)
1001 return av_shift (coro_ready [prio]); 1562 return av_shift (coro_ready [prio]);
1002 1563
1003 return 0; 1564 return 0;
1004} 1565}
1005 1566
1006static int 1567static int
1007api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1008{ 1569{
1009 dTHX;
1010 struct coro *coro; 1570 struct coro *coro;
1571 SV *sv_hook;
1572 void (*xs_hook)(void);
1011 1573
1012 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
1013 coro_sv = SvRV (coro_sv); 1575 coro_sv = SvRV (coro_sv);
1014 1576
1015 coro = SvSTATE (coro_sv); 1577 coro = SvSTATE (coro_sv);
… …
1017 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1018 return 0; 1580 return 0;
1019 1581
1020 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1021 1583
1022 LOCK; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1023 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1586
1587 coro_enq (aTHX_ coro);
1024 ++coro_nready; 1588 ++coro_nready;
1025 UNLOCK; 1589
1590 if (sv_hook)
1591 {
1592 dSP;
1593
1594 ENTER;
1595 SAVETMPS;
1596
1597 PUSHMARK (SP);
1598 PUTBACK;
1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1600
1601 FREETMPS;
1602 LEAVE;
1603 }
1604
1605 if (xs_hook)
1606 xs_hook ();
1026 1607
1027 return 1; 1608 return 1;
1028} 1609}
1029 1610
1030static int 1611static int
1031api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1032{ 1613{
1033 dTHX;
1034 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1035} 1615}
1036 1616
1037static void 1617INLINE void
1038prepare_schedule (pTHX_ struct transfer_args *ta) 1618prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1039{ 1619{
1040 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1041 1621
1042 for (;;) 1622 for (;;)
1043 { 1623 {
1044 LOCK;
1045 next_sv = coro_deq (aTHX_ PRIO_MIN); 1624 next_sv = coro_deq (aTHX);
1046 1625
1047 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1048 if (!next_sv) 1627 if (expect_false (!next_sv))
1049 { 1628 {
1050 dSP; 1629 dSP;
1051 UNLOCK;
1052 1630
1053 ENTER; 1631 ENTER;
1054 SAVETMPS; 1632 SAVETMPS;
1055 1633
1056 PUSHMARK (SP); 1634 PUSHMARK (SP);
1057 PUTBACK; 1635 PUTBACK;
1058 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1059 1637
1060 FREETMPS; 1638 FREETMPS;
1061 LEAVE; 1639 LEAVE;
1062 continue; 1640 continue;
1063 } 1641 }
1064 1642
1065 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1066 1644
1067 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1068 if (ta->next->flags & CF_DESTROYED) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1069 { 1647 {
1070 UNLOCK;
1071 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1072 /* coro_nready is already taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1073 continue; 1650 continue;
1074 } 1651 }
1075 1652
1076 --coro_nready; 1653 --coro_nready;
1077 UNLOCK;
1078 break; 1654 break;
1079 } 1655 }
1080 1656
1081 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1082 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1659 ta->prev = SvSTATE_hv (prev_sv);
1660 TRANSFER_CHECK (*ta);
1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1662 ta->next->flags &= ~CF_READY;
1083 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1084 ta->prev = SvSTATE (prev_sv);
1085 1664
1086 assert (ta->next->flags & CF_READY);
1087 ta->next->flags &= ~CF_READY;
1088
1089 LOCK;
1090 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1091 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1092 UNLOCK;
1093} 1667}
1094 1668
1095static void 1669INLINE void
1096prepare_cede (pTHX_ struct transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1097{ 1671{
1098 api_ready (coro_current); 1672 api_ready (aTHX_ coro_current);
1099 prepare_schedule (aTHX_ ta); 1673 prepare_schedule (aTHX_ ta);
1100} 1674}
1101 1675
1676INLINE void
1677prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1678{
1679 SV *prev = SvRV (coro_current);
1680
1681 if (coro_nready)
1682 {
1683 prepare_schedule (aTHX_ ta);
1684 api_ready (aTHX_ prev);
1685 }
1686 else
1687 prepare_nop (aTHX_ ta);
1688}
1689
1690static void
1691api_schedule (pTHX)
1692{
1693 struct coro_transfer_args ta;
1694
1695 prepare_schedule (aTHX_ &ta);
1696 TRANSFER (ta, 1);
1697}
1698
1102static int 1699static int
1103prepare_cede_notself (pTHX_ struct transfer_args *ta) 1700api_cede (pTHX)
1104{ 1701{
1105 if (coro_nready) 1702 struct coro_transfer_args ta;
1106 { 1703
1107 SV *prev = SvRV (coro_current);
1108 prepare_schedule (aTHX_ ta); 1704 prepare_cede (aTHX_ &ta);
1109 api_ready (prev); 1705
1706 if (expect_true (ta.prev != ta.next))
1707 {
1708 TRANSFER (ta, 1);
1110 return 1; 1709 return 1;
1111 } 1710 }
1112 else 1711 else
1113 return 0; 1712 return 0;
1114} 1713}
1115 1714
1116static void
1117api_schedule (void)
1118{
1119 dTHX;
1120 struct transfer_args ta;
1121
1122 prepare_schedule (aTHX_ &ta);
1123 TRANSFER (ta);
1124}
1125
1126static int 1715static int
1127api_cede (void) 1716api_cede_notself (pTHX)
1128{ 1717{
1129 dTHX; 1718 if (coro_nready)
1719 {
1130 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1131 1721
1132 prepare_cede (aTHX_ &ta); 1722 prepare_cede_notself (aTHX_ &ta);
1133
1134 if (ta.prev != ta.next)
1135 {
1136 TRANSFER (ta); 1723 TRANSFER (ta, 1);
1137 return 1; 1724 return 1;
1138 } 1725 }
1139 else 1726 else
1140 return 0; 1727 return 0;
1141} 1728}
1142 1729
1730static void
1731api_trace (pTHX_ SV *coro_sv, int flags)
1732{
1733 struct coro *coro = SvSTATE (coro_sv);
1734
1735 if (flags & CC_TRACE)
1736 {
1737 if (!coro->cctx)
1738 coro->cctx = cctx_new_run ();
1739 else if (!(coro->cctx->flags & CC_TRACE))
1740 croak ("cannot enable tracing on coroutine with custom stack,");
1741
1742 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1743 }
1744 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1745 {
1746 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1747
1748 if (coro->flags & CF_RUNNING)
1749 PL_runops = RUNOPS_DEFAULT;
1750 else
1751 coro->slot->runops = RUNOPS_DEFAULT;
1752 }
1753}
1754
1755/*****************************************************************************/
1756/* async pool handler */
1757
1143static int 1758static int
1144api_cede_notself (void) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1145{ 1760{
1146 dTHX; 1761 HV *hv = (HV *)SvRV (coro_current);
1762 struct coro *coro = (struct coro *)frame->data;
1763
1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1887
1888 return 0;
1889}
1890
1891static void
1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 SV *cb;
1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
1147 struct transfer_args ta; 2064 struct coro_transfer_args ta;
1148 2065
1149 if (prepare_cede_notself (aTHX_ &ta)) 2066 slf_frame.prepare (aTHX_ &ta);
1150 {
1151 TRANSFER (ta); 2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
2154
2155/*****************************************************************************/
2156/* PerlIO::cede */
2157
2158typedef struct
2159{
2160 PerlIOBuf base;
2161 NV next, every;
2162} PerlIOCede;
2163
2164static IV
2165PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2166{
2167 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2168
2169 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2170 self->next = nvtime () + self->every;
2171
2172 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2173}
2174
2175static SV *
2176PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2177{
2178 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2179
2180 return newSVnv (self->every);
2181}
2182
2183static IV
2184PerlIOCede_flush (pTHX_ PerlIO *f)
2185{
2186 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2187 double now = nvtime ();
2188
2189 if (now >= self->next)
2190 {
2191 api_cede (aTHX);
2192 self->next = now + self->every;
2193 }
2194
2195 return PerlIOBuf_flush (aTHX_ f);
2196}
2197
2198static PerlIO_funcs PerlIO_cede =
2199{
2200 sizeof(PerlIO_funcs),
2201 "cede",
2202 sizeof(PerlIOCede),
2203 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2204 PerlIOCede_pushed,
2205 PerlIOBuf_popped,
2206 PerlIOBuf_open,
2207 PerlIOBase_binmode,
2208 PerlIOCede_getarg,
2209 PerlIOBase_fileno,
2210 PerlIOBuf_dup,
2211 PerlIOBuf_read,
2212 PerlIOBuf_unread,
2213 PerlIOBuf_write,
2214 PerlIOBuf_seek,
2215 PerlIOBuf_tell,
2216 PerlIOBuf_close,
2217 PerlIOCede_flush,
2218 PerlIOBuf_fill,
2219 PerlIOBase_eof,
2220 PerlIOBase_error,
2221 PerlIOBase_clearerr,
2222 PerlIOBase_setlinebuf,
2223 PerlIOBuf_get_base,
2224 PerlIOBuf_bufsiz,
2225 PerlIOBuf_get_ptr,
2226 PerlIOBuf_get_cnt,
2227 PerlIOBuf_set_ptrcnt,
2228};
2229
2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
2232
2233static SV *
2234coro_waitarray_new (pTHX_ int count)
2235{
2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
2239
2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
2248
2249 return newRV_noinc ((SV *)av);
2250}
2251
2252/* semaphore */
2253
2254static void
2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2256{
2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
2259
2260 count += adjust;
2261 SvIVX (count_sv) = count;
2262
2263 /* now wake up as many waiters as are expected to lock */
2264 while (count > 0 && AvFILLp (av) > 0)
2265 {
2266 SV *cb;
2267
2268 /* swap first two elements so we can shift a waiter */
2269 AvARRAY (av)[0] = AvARRAY (av)[1];
2270 AvARRAY (av)[1] = count_sv;
2271 cb = av_shift (av);
2272
2273 if (SvOBJECT (cb))
2274 {
2275 api_ready (aTHX_ cb);
2276 --count;
2277 }
2278 else if (SvTYPE (cb) == SVt_PVCV)
2279 {
2280 dSP;
2281 PUSHMARK (SP);
2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2285 }
2286
2287 SvREFCNT_dec (cb);
2288 }
2289}
2290
2291static void
2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2293{
2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2296}
2297
2298static int
2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2300{
2301 AV *av = (AV *)frame->data;
2302 SV *count_sv = AvARRAY (av)[0];
2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2307 else if (SvIVX (count_sv) > 0)
2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2316 return 0;
2317 }
2318 else
2319 {
2320 int i;
2321 /* if we were woken up but can't down, we look through the whole */
2322 /* waiters list and only add us if we aren't in there already */
2323 /* this avoids some degenerate memory usage cases */
2324
2325 for (i = 1; i <= AvFILLp (av); ++i)
2326 if (AvARRAY (av)[i] == SvRV (coro_current))
2327 return 1;
2328
2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1152 return 1; 2330 return 1;
1153 } 2331 }
2332}
2333
2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2348{
2349 AV *av = (AV *)SvRV (arg [0]);
2350
2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2352 {
2353 frame->data = (void *)av;
2354 frame->prepare = prepare_nop;
2355 }
1154 else 2356 else
2357 {
2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2359
2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2361 frame->prepare = prepare_schedule;
2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2373 frame->check = slf_check_semaphore_down;
2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
1155 return 0; 2518 return 0;
1156}
1157 2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
2539 dSP;
2540 int i;
2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
2590 PUSHMARK (SP);
2591
2592 /* first push all args to the stack */
2593 EXTEND (SP, items + 1);
2594
2595 for (i = 0; i < items; ++i)
2596 PUSHs (arg [i]);
2597
2598 /* now push the callback closure */
2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2600
2601 /* now call the AIO function - we assume our request is uncancelable */
2602 PUTBACK;
2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
2604 }
2605
2606 /* now that the requets is going, we loop toll we have a result */
2607 frame->data = (void *)state;
2608 frame->prepare = prepare_schedule;
2609 frame->check = slf_check_aio_req;
2610}
2611
2612static void
2613coro_aio_req_xs (pTHX_ CV *cv)
2614{
2615 dXSARGS;
2616
2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2618
2619 XSRETURN_EMPTY;
2620}
2621
2622/*****************************************************************************/
2623
1158MODULE = Coro::State PACKAGE = Coro::State 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159 2625
1160PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
1161 2627
1162BOOT: 2628BOOT:
1163{ 2629{
1164#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
1165 MUTEX_INIT (&coro_mutex); 2631# if CORO_PTHREAD
2632 coro_thx = PERL_GET_CONTEXT;
2633# endif
1166#endif 2634#endif
1167 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
1168 2636
2637 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2638 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2639
2640 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2641 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2642 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2643
2644 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2645 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2646 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2647
1169 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2648 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170 2649
1171 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2650 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 2651 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 2652 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2653 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178 2654
1179 main_mainstack = PL_mainstack; 2655 main_mainstack = PL_mainstack;
2656 main_top_env = PL_top_env;
1180 2657
2658 while (main_top_env->je_prev)
2659 main_top_env = main_top_env->je_prev;
2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2672
1181 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
2674 coroapi.rev = CORO_API_REVISION;
2675
1182 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
2677
2678 coroapi.sv_state = SvSTATE_;
2679 coroapi.execute_slf = api_execute_slf;
2680 coroapi.prepare_nop = prepare_nop;
2681 coroapi.prepare_schedule = prepare_schedule;
2682 coroapi.prepare_cede = prepare_cede;
2683 coroapi.prepare_cede_notself = prepare_cede_notself;
2684
2685 {
2686 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2687
2688 if (!svp) croak ("Time::HiRes is required");
2689 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2690
2691 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2692 }
1183 2693
1184 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185} 2695}
1186 2696
1187SV * 2697SV *
1188new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
1189 CODE: 2701 CODE:
1190{ 2702{
1191 struct coro *coro; 2703 struct coro *coro;
2704 MAGIC *mg;
1192 HV *hv; 2705 HV *hv;
2706 CV *cb;
1193 int i; 2707 int i;
1194 2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
2722
1195 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
1196 coro->args = newAV (); 2724 coro->args = newAV ();
1197 coro->save = CORO_SAVE_DEF;
1198 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
1199 2726
2727 if (coro_first) coro_first->prev = coro;
2728 coro->next = coro_first;
2729 coro_first = coro;
2730
1200 hv = newHV (); 2731 coro->hv = hv = newHV ();
1201 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2733 mg->mg_flags |= MGf_DUP;
1202 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203 2735
2736 if (items > 1)
2737 {
2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
1204 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
1205 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
1206} 2751}
1207 OUTPUT: 2752 OUTPUT:
1208 RETVAL 2753 RETVAL
1209 2754
1210int 2755void
1211save (SV *coro, int new_save = -1) 2756transfer (...)
2757 PROTOTYPE: $$
1212 CODE: 2758 CODE:
1213 RETVAL = api_save (coro, new_save); 2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1214 OUTPUT:
1215 RETVAL
1216
1217int
1218save_also (SV *coro_sv, int save_also)
1219 CODE:
1220{
1221 struct coro *coro = SvSTATE (coro_sv);
1222 RETVAL = coro->save;
1223 coro->save |= save_also;
1224}
1225 OUTPUT:
1226 RETVAL
1227
1228void
1229_set_stacklevel (...)
1230 ALIAS:
1231 Coro::State::transfer = 1
1232 Coro::schedule = 2
1233 Coro::cede = 3
1234 Coro::cede_notself = 4
1235 CODE:
1236{
1237 struct transfer_args ta;
1238
1239 switch (ix)
1240 {
1241 case 0:
1242 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243 ta.next = 0;
1244 break;
1245
1246 case 1:
1247 if (items != 2)
1248 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1249
1250 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1251 break;
1252
1253 case 2:
1254 prepare_schedule (aTHX_ &ta);
1255 break;
1256
1257 case 3:
1258 prepare_cede (aTHX_ &ta);
1259 break;
1260
1261 case 4:
1262 if (!prepare_cede_notself (aTHX_ &ta))
1263 XSRETURN_EMPTY;
1264
1265 break;
1266 }
1267
1268 BARRIER;
1269 TRANSFER (ta);
1270
1271 if (GIMME_V != G_VOID && ta.next != ta.prev)
1272 XSRETURN_YES;
1273}
1274 2760
1275bool 2761bool
1276_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
1277 CODE: 2763 CODE:
1278 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1279 OUTPUT: 2765 OUTPUT:
1280 RETVAL 2766 RETVAL
1281 2767
1282void 2768void
1283_exit (code) 2769_exit (int code)
1284 int code
1285 PROTOTYPE: $ 2770 PROTOTYPE: $
1286 CODE: 2771 CODE:
1287 _exit (code); 2772 _exit (code);
1288 2773
1289int 2774int
1290cctx_stacksize (int new_stacksize = 0) 2775cctx_stacksize (int new_stacksize = 0)
2776 PROTOTYPE: ;$
1291 CODE: 2777 CODE:
1292 RETVAL = coro_stacksize; 2778 RETVAL = cctx_stacksize;
1293 if (new_stacksize) 2779 if (new_stacksize)
2780 {
1294 coro_stacksize = new_stacksize; 2781 cctx_stacksize = new_stacksize;
2782 ++cctx_gen;
2783 }
1295 OUTPUT: 2784 OUTPUT:
1296 RETVAL 2785 RETVAL
1297 2786
1298int 2787int
2788cctx_max_idle (int max_idle = 0)
2789 PROTOTYPE: ;$
2790 CODE:
2791 RETVAL = cctx_max_idle;
2792 if (max_idle > 1)
2793 cctx_max_idle = max_idle;
2794 OUTPUT:
2795 RETVAL
2796
2797int
1299cctx_count () 2798cctx_count ()
2799 PROTOTYPE:
1300 CODE: 2800 CODE:
1301 RETVAL = cctx_count; 2801 RETVAL = cctx_count;
1302 OUTPUT: 2802 OUTPUT:
1303 RETVAL 2803 RETVAL
1304 2804
1305int 2805int
1306cctx_idle () 2806cctx_idle ()
2807 PROTOTYPE:
1307 CODE: 2808 CODE:
1308 RETVAL = cctx_idle; 2809 RETVAL = cctx_idle;
1309 OUTPUT: 2810 OUTPUT:
1310 RETVAL 2811 RETVAL
1311 2812
2813void
2814list ()
2815 PROTOTYPE:
2816 PPCODE:
2817{
2818 struct coro *coro;
2819 for (coro = coro_first; coro; coro = coro->next)
2820 if (coro->hv)
2821 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2822}
2823
2824void
2825call (Coro::State coro, SV *coderef)
2826 ALIAS:
2827 eval = 1
2828 CODE:
2829{
2830 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2831 {
2832 struct coro temp;
2833
2834 if (!(coro->flags & CF_RUNNING))
2835 {
2836 PUTBACK;
2837 save_perl (aTHX_ &temp);
2838 load_perl (aTHX_ coro);
2839 }
2840
2841 {
2842 dSP;
2843 ENTER;
2844 SAVETMPS;
2845 PUTBACK;
2846 PUSHSTACK;
2847 PUSHMARK (SP);
2848
2849 if (ix)
2850 eval_sv (coderef, 0);
2851 else
2852 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2853
2854 POPSTACK;
2855 SPAGAIN;
2856 FREETMPS;
2857 LEAVE;
2858 PUTBACK;
2859 }
2860
2861 if (!(coro->flags & CF_RUNNING))
2862 {
2863 save_perl (aTHX_ coro);
2864 load_perl (aTHX_ &temp);
2865 SPAGAIN;
2866 }
2867 }
2868}
2869
2870SV *
2871is_ready (Coro::State coro)
2872 PROTOTYPE: $
2873 ALIAS:
2874 is_ready = CF_READY
2875 is_running = CF_RUNNING
2876 is_new = CF_NEW
2877 is_destroyed = CF_DESTROYED
2878 CODE:
2879 RETVAL = boolSV (coro->flags & ix);
2880 OUTPUT:
2881 RETVAL
2882
2883void
2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2885 PROTOTYPE: $;$
2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2890 SvREFCNT_dec (*throwp);
2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2893
2894void
2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2896 PROTOTYPE: $;$
2897 C_ARGS: aTHX_ coro, flags
2898
2899SV *
2900has_cctx (Coro::State coro)
2901 PROTOTYPE: $
2902 CODE:
2903 RETVAL = boolSV (!!coro->cctx);
2904 OUTPUT:
2905 RETVAL
2906
2907int
2908is_traced (Coro::State coro)
2909 PROTOTYPE: $
2910 CODE:
2911 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2912 OUTPUT:
2913 RETVAL
2914
2915UV
2916rss (Coro::State coro)
2917 PROTOTYPE: $
2918 ALIAS:
2919 usecount = 1
2920 CODE:
2921 switch (ix)
2922 {
2923 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2924 case 1: RETVAL = coro->usecount; break;
2925 }
2926 OUTPUT:
2927 RETVAL
2928
2929void
2930force_cctx ()
2931 PROTOTYPE:
2932 CODE:
2933 SvSTATE_current->cctx->idle_sp = 0;
2934
2935void
2936swap_defsv (Coro::State self)
2937 PROTOTYPE: $
2938 ALIAS:
2939 swap_defav = 1
2940 CODE:
2941 if (!self->slot)
2942 croak ("cannot swap state with coroutine that has no saved state,");
2943 else
2944 {
2945 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2947
2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2949 }
2950
2951
1312MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
1313 2953
1314BOOT: 2954BOOT:
1315{ 2955{
1316 int i; 2956 int i;
1317 2957
2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2964 SvREADONLY_on (coro_current);
2965
2966 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2967 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2968 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2969 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2970
1318 coro_stash = gv_stashpv ("Coro", TRUE); 2971 coro_stash = gv_stashpv ("Coro", TRUE);
1319 2972
1320 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2973 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2974 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2975 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2976 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2977 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2978 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326 2979
1327 coro_current = get_sv ("Coro::current", FALSE);
1328 SvREADONLY_on (coro_current);
1329
1330 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2980 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331 coro_ready[i] = newAV (); 2981 coro_ready[i] = newAV ();
1332 2982
1333 { 2983 {
1334 SV *sv = perl_get_sv("Coro::API", 1); 2984 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1335 2985
1336 coroapi.schedule = api_schedule; 2986 coroapi.schedule = api_schedule;
1337 coroapi.save = api_save;
1338 coroapi.cede = api_cede; 2987 coroapi.cede = api_cede;
1339 coroapi.cede_notself = api_cede_notself; 2988 coroapi.cede_notself = api_cede_notself;
1340 coroapi.ready = api_ready; 2989 coroapi.ready = api_ready;
1341 coroapi.is_ready = api_is_ready; 2990 coroapi.is_ready = api_is_ready;
1342 coroapi.nready = &coro_nready; 2991 coroapi.nready = coro_nready;
1343 coroapi.current = coro_current; 2992 coroapi.current = coro_current;
1344 2993
1345 GCoroAPI = &coroapi; 2994 /*GCoroAPI = &coroapi;*/
1346 sv_setiv (sv, (IV)&coroapi); 2995 sv_setiv (sv, (IV)&coroapi);
1347 SvREADONLY_on (sv); 2996 SvREADONLY_on (sv);
1348 } 2997 }
1349} 2998}
2999
3000void
3001schedule (...)
3002 CODE:
3003 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3004
3005void
3006cede (...)
3007 CODE:
3008 CORO_EXECUTE_SLF_XS (slf_init_cede);
3009
3010void
3011cede_notself (...)
3012 CODE:
3013 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1350 3014
1351void 3015void
1352_set_current (SV *current) 3016_set_current (SV *current)
1353 PROTOTYPE: $ 3017 PROTOTYPE: $
1354 CODE: 3018 CODE:
1355 SvREFCNT_dec (SvRV (coro_current)); 3019 SvREFCNT_dec (SvRV (coro_current));
1356 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3020 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3021
3022void
3023_set_readyhook (SV *hook)
3024 PROTOTYPE: $
3025 CODE:
3026 SvREFCNT_dec (coro_readyhook);
3027 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1357 3028
1358int 3029int
1359prio (Coro::State coro, int newprio = 0) 3030prio (Coro::State coro, int newprio = 0)
3031 PROTOTYPE: $;$
1360 ALIAS: 3032 ALIAS:
1361 nice = 1 3033 nice = 1
1362 CODE: 3034 CODE:
1363{ 3035{
1364 RETVAL = coro->prio; 3036 RETVAL = coro->prio;
… …
1379 3051
1380SV * 3052SV *
1381ready (SV *self) 3053ready (SV *self)
1382 PROTOTYPE: $ 3054 PROTOTYPE: $
1383 CODE: 3055 CODE:
1384 RETVAL = boolSV (api_ready (self)); 3056 RETVAL = boolSV (api_ready (aTHX_ self));
1385 OUTPUT:
1386 RETVAL
1387
1388SV *
1389is_ready (SV *self)
1390 PROTOTYPE: $
1391 CODE:
1392 RETVAL = boolSV (api_is_ready (self));
1393 OUTPUT: 3057 OUTPUT:
1394 RETVAL 3058 RETVAL
1395 3059
1396int 3060int
1397nready (...) 3061nready (...)
… …
1399 CODE: 3063 CODE:
1400 RETVAL = coro_nready; 3064 RETVAL = coro_nready;
1401 OUTPUT: 3065 OUTPUT:
1402 RETVAL 3066 RETVAL
1403 3067
1404MODULE = Coro::State PACKAGE = Coro::AIO 3068void
3069_pool_handler (...)
3070 CODE:
3071 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3072
3073void
3074async_pool (SV *cv, ...)
3075 PROTOTYPE: &@
3076 PPCODE:
3077{
3078 HV *hv = (HV *)av_pop (av_async_pool);
3079 AV *av = newAV ();
3080 SV *cb = ST (0);
3081 int i;
3082
3083 av_extend (av, items - 2);
3084 for (i = 1; i < items; ++i)
3085 av_push (av, SvREFCNT_inc_NN (ST (i)));
3086
3087 if ((SV *)hv == &PL_sv_undef)
3088 {
3089 PUSHMARK (SP);
3090 EXTEND (SP, 2);
3091 PUSHs (sv_Coro);
3092 PUSHs ((SV *)cv_pool_handler);
3093 PUTBACK;
3094 call_sv ((SV *)cv_coro_new, G_SCALAR);
3095 SPAGAIN;
3096
3097 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3098 }
3099
3100 {
3101 struct coro *coro = SvSTATE_hv (hv);
3102
3103 assert (!coro->invoke_cb);
3104 assert (!coro->invoke_av);
3105 coro->invoke_cb = SvREFCNT_inc (cb);
3106 coro->invoke_av = av;
3107 }
3108
3109 api_ready (aTHX_ (SV *)hv);
3110
3111 if (GIMME_V != G_VOID)
3112 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3113 else
3114 SvREFCNT_dec (hv);
3115}
1405 3116
1406SV * 3117SV *
1407_get_state () 3118rouse_cb ()
3119 PROTOTYPE:
1408 CODE: 3120 CODE:
1409{ 3121 RETVAL = coro_new_rouse_cb (aTHX);
1410 struct io_state *data;
1411
1412 RETVAL = newSV (sizeof (struct io_state));
1413 data = (struct io_state *)SvPVX (RETVAL);
1414 SvCUR_set (RETVAL, sizeof (struct io_state));
1415 SvPOK_only (RETVAL);
1416
1417 data->errorno = errno;
1418 data->laststype = PL_laststype;
1419 data->laststatval = PL_laststatval;
1420 data->statcache = PL_statcache;
1421}
1422 OUTPUT: 3122 OUTPUT:
1423 RETVAL 3123 RETVAL
1424 3124
1425void 3125void
1426_set_state (char *data_) 3126rouse_wait (...)
1427 PROTOTYPE: $ 3127 PROTOTYPE: ;$
3128 PPCODE:
3129 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3130
3131
3132MODULE = Coro::State PACKAGE = PerlIO::cede
3133
3134BOOT:
3135 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3136
3137
3138MODULE = Coro::State PACKAGE = Coro::Semaphore
3139
3140SV *
3141new (SV *klass, SV *count = 0)
1428 CODE: 3142 CODE:
1429{ 3143 RETVAL = sv_bless (
1430 struct io_state *data = (void *)data_; 3144 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3145 GvSTASH (CvGV (cv))
3146 );
3147 OUTPUT:
3148 RETVAL
1431 3149
1432 errno = data->errorno; 3150# helper for Coro::Channel
1433 PL_laststype = data->laststype; 3151SV *
1434 PL_laststatval = data->laststatval; 3152_alloc (int count)
1435 PL_statcache = data->statcache; 3153 CODE:
1436} 3154 RETVAL = coro_waitarray_new (aTHX_ count);
3155 OUTPUT:
3156 RETVAL
1437 3157
3158SV *
3159count (SV *self)
3160 CODE:
3161 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3162 OUTPUT:
3163 RETVAL
3164
3165void
3166up (SV *self, int adjust = 1)
3167 ALIAS:
3168 adjust = 1
3169 CODE:
3170 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3171
3172void
3173down (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3176
3177void
3178wait (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3181
3182void
3183try (SV *self)
3184 PPCODE:
3185{
3186 AV *av = (AV *)SvRV (self);
3187 SV *count_sv = AvARRAY (av)[0];
3188 IV count = SvIVX (count_sv);
3189
3190 if (count > 0)
3191 {
3192 --count;
3193 SvIVX (count_sv) = count;
3194 XSRETURN_YES;
3195 }
3196 else
3197 XSRETURN_NO;
3198}
3199
3200void
3201waiters (SV *self)
3202 PPCODE:
3203{
3204 AV *av = (AV *)SvRV (self);
3205 int wcount = AvFILLp (av) + 1 - 1;
3206
3207 if (GIMME_V == G_SCALAR)
3208 XPUSHs (sv_2mortal (newSViv (wcount)));
3209 else
3210 {
3211 int i;
3212 EXTEND (SP, wcount);
3213 for (i = 1; i <= wcount; ++i)
3214 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3215 }
3216}
3217
3218MODULE = Coro::State PACKAGE = Coro::Signal
3219
3220SV *
3221new (SV *klass)
3222 CODE:
3223 RETVAL = sv_bless (
3224 coro_waitarray_new (aTHX_ 0),
3225 GvSTASH (CvGV (cv))
3226 );
3227 OUTPUT:
3228 RETVAL
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3234
3235void
3236broadcast (SV *self)
3237 CODE:
3238{
3239 AV *av = (AV *)SvRV (self);
3240 coro_signal_wake (aTHX_ av, AvFILLp (av));
3241}
3242
3243void
3244send (SV *self)
3245 CODE:
3246{
3247 AV *av = (AV *)SvRV (self);
3248
3249 if (AvFILLp (av))
3250 coro_signal_wake (aTHX_ av, 1);
3251 else
3252 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3253}
3254
3255IV
3256awaited (SV *self)
3257 CODE:
3258 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3259 OUTPUT:
3260 RETVAL
3261
3262
3263MODULE = Coro::State PACKAGE = Coro::AnyEvent
3264
3265BOOT:
3266 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3267
3268void
3269_schedule (...)
3270 CODE:
3271{
3272 static int incede;
3273
3274 api_cede_notself (aTHX);
3275
3276 ++incede;
3277 while (coro_nready >= incede && api_cede (aTHX))
3278 ;
3279
3280 sv_setsv (sv_activity, &PL_sv_undef);
3281 if (coro_nready >= incede)
3282 {
3283 PUSHMARK (SP);
3284 PUTBACK;
3285 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3286 }
3287
3288 --incede;
3289}
3290
3291
3292MODULE = Coro::State PACKAGE = Coro::AIO
3293
3294void
3295_register (char *target, char *proto, SV *req)
3296 CODE:
3297{
3298 CV *req_cv = coro_sv_2cv (aTHX_ req);
3299 /* newXSproto doesn't return the CV on 5.8 */
3300 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3301 sv_setpv ((SV *)slf_cv, proto);
3302 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3303}
3304

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