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Comparing Coro/Coro/State.xs (file contents):
Revision 1.239 by root, Sat Jun 28 23:14:19 2008 UTC vs.
Revision 1.331 by root, Thu Nov 27 12:00:59 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
63 61
64#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr 63# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
67# endif 65# endif
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 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
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS 102#endif
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs 103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
96#endif 108#endif
97 109
98/* 5.8.7 */ 110/* 5.8.7 */
99#ifndef SvRV_set 111#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 126#endif
115 127
116/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
118#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
120 137
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
122 139
123#if __GNUC__ >= 3 140#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
127#else 144#else
128# define attribute(x) 145# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
131#endif 148#endif
132 149
133#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
135 152
136#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
137 154
138#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
139 157
140#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 159# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 161# endif
162#endif
148 163
149/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 174static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
164 181
165static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 184static SV *rv_diehook;
168static SV *rv_warnhook; 185static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
170 187
171/* async_pool helper stuff */ 188/* async_pool helper stuff */
172static SV *sv_pool_rss; 189static SV *sv_pool_rss;
173static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
175 196
176/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
177static SV *sv_activity; 198static SV *sv_activity;
178 199
179static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 210};
190 211
191/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 213typedef struct coro_cctx
214{
193 struct coro_cctx *next; 215 struct coro_cctx *next;
194 216
195 /* the stack */ 217 /* the stack */
196 void *sptr; 218 void *sptr;
197 size_t ssize; 219 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 224 JMPENV *top_env;
203 coro_context cctx; 225 coro_context cctx;
204 226
227 U32 gen;
205#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
206 int valgrind_id; 229 int valgrind_id;
207#endif 230#endif
208 unsigned char flags; 231 unsigned char flags;
209} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
210 237
211enum { 238enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 243};
217 244
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 246typedef struct
247{
220 SV *defsv; 248 SV *defsv;
221 AV *defav; 249 AV *defav;
222 SV *errsv; 250 SV *errsv;
223 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
224#define VAR(name,type) type name; 253#define VAR(name,type) type name;
225# include "state.h" 254# include "state.h"
226#undef VAR 255#undef VAR
227} perl_slots; 256} perl_slots;
228 257
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 259
231/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
232struct coro { 261struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 263 coro_cctx *cctx;
235 264
236 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 267 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
239 269
270 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
244 276
245 /* statistics */ 277 /* statistics */
246 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
247 279
248 /* coro process data */ 280 /* coro process data */
249 int prio; 281 int prio;
250 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
251 284
252 /* async_pool */ 285 /* async_pool */
253 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
254 289
255 /* linked list */ 290 /* linked list */
256 struct coro *next, *prev; 291 struct coro *next, *prev;
257}; 292};
258 293
259typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
261 301
262/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
263 303
264#define PRIO_MAX 3 304#define PRIO_MAX 3
265#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 309#define PRIO_MIN -4
270 310
271/* for Coro.pm */ 311/* for Coro.pm */
272static SV *coro_current; 312static SV *coro_current;
273static SV *coro_readyhook; 313static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
277 318
278/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
279 320
280static SV * 321static SV *
281coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 346 get_hv (name, create);
306#endif 347#endif
307 return get_hv (name, create); 348 return get_hv (name, create);
308} 349}
309 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
310static AV * 360static AV *
311coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
312{ 362{
313 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
315 365
316 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 372#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 374 --AvFILLp (padlist);
325 375
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
328 378
329 return newpadlist; 379 return newpadlist;
330} 380}
331 381
332static void 382static void
333free_padlist (pTHX_ AV *padlist) 383free_padlist (pTHX_ AV *padlist)
334{ 384{
335 /* may be during global destruction */ 385 /* may be during global destruction */
336 if (SvREFCNT (padlist)) 386 if (!IN_DESTRUCT)
337 { 387 {
338 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
389
339 while (i >= 0) 390 while (i >= 0)
340 { 391 {
341 SV **svp = av_fetch (padlist, i--, FALSE); 392 /* we try to be extra-careful here */
342 if (svp) 393 AV *av = (AV *)AvARRAY (padlist)[i--];
343 { 394
344 SV *sv; 395 I32 i = AvFILLp (av);
345 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 396
397 while (i >= 0)
398 SvREFCNT_dec (AvARRAY (av)[i--]);
399
400 AvFILLp (av) = -1;
346 SvREFCNT_dec (sv); 401 SvREFCNT_dec (av);
347
348 SvREFCNT_dec (*svp);
349 }
350 } 402 }
351 403
404 AvFILLp (padlist) = -1;
352 SvREFCNT_dec ((SV*)padlist); 405 SvREFCNT_dec ((SV*)padlist);
353 } 406 }
354} 407}
355 408
356static int 409static int
… …
361 414
362 /* casting is fun. */ 415 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 416 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 417 free_padlist (aTHX_ padlist);
365 418
419 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
420
366 return 0; 421 return 0;
367} 422}
368 423
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 424#define CORO_MAGIC_type_cv 26
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 425#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 426
372static MGVTBL coro_cv_vtbl = { 427static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 428 0, 0, 0, 0,
374 coro_cv_free 429 coro_cv_free
375}; 430};
376 431
432#define CORO_MAGIC_NN(sv, type) \
433 (expect_true (SvMAGIC (sv)->mg_type == type) \
434 ? SvMAGIC (sv) \
435 : mg_find (sv, type))
436
377#define CORO_MAGIC(sv,type) \ 437#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 438 (expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 439 ? CORO_MAGIC_NN (sv, type) \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0 440 : 0)
383 441
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 442#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 443#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
386 444
387static struct coro * 445INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 446SvSTATE_ (pTHX_ SV *coro)
389{ 447{
390 HV *stash; 448 HV *stash;
391 MAGIC *mg; 449 MAGIC *mg;
392 450
… …
407 mg = CORO_MAGIC_state (coro); 465 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 466 return (struct coro *)mg->mg_ptr;
409} 467}
410 468
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 469#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
470
471/* faster than SvSTATE, but expects a coroutine hv */
472#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
473#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
412 474
413/* the next two functions merely cache the padlists */ 475/* the next two functions merely cache the padlists */
414static void 476static void
415get_padlist (pTHX_ CV *cv) 477get_padlist (pTHX_ CV *cv)
416{ 478{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 482 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 483 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 484 else
423 { 485 {
424#if CORO_PREFER_PERL_FUNCTIONS 486#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 487 /* this is probably cleaner? but also slower! */
488 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 489 CV *cp = Perl_cv_clone (aTHX_ cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 490 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 491 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 492 SvREFCNT_dec (cp);
430#else 493#else
431 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 494 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
432#endif 495#endif
433 } 496 }
434} 497}
435 498
436static void 499static void
… …
443 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 506 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
444 507
445 av = (AV *)mg->mg_obj; 508 av = (AV *)mg->mg_obj;
446 509
447 if (expect_false (AvFILLp (av) >= AvMAX (av))) 510 if (expect_false (AvFILLp (av) >= AvMAX (av)))
448 av_extend (av, AvMAX (av) + 1); 511 av_extend (av, AvFILLp (av) + 1);
449 512
450 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 513 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
451} 514}
452 515
453/** load & save, init *******************************************************/ 516/** load & save, init *******************************************************/
… …
458 perl_slots *slot = c->slot; 521 perl_slots *slot = c->slot;
459 c->slot = 0; 522 c->slot = 0;
460 523
461 PL_mainstack = c->mainstack; 524 PL_mainstack = c->mainstack;
462 525
463 GvSV (PL_defgv) = slot->defsv; 526 GvSV (PL_defgv) = slot->defsv;
464 GvAV (PL_defgv) = slot->defav; 527 GvAV (PL_defgv) = slot->defav;
465 GvSV (PL_errgv) = slot->errsv; 528 GvSV (PL_errgv) = slot->errsv;
466 GvSV (irsgv) = slot->irsgv; 529 GvSV (irsgv) = slot->irsgv;
530 GvHV (PL_hintgv) = slot->hinthv;
467 531
468 #define VAR(name,type) PL_ ## name = slot->name; 532 #define VAR(name,type) PL_ ## name = slot->name;
469 # include "state.h" 533 # include "state.h"
470 #undef VAR 534 #undef VAR
471 535
… …
482 CvPADLIST (cv) = (AV *)POPs; 546 CvPADLIST (cv) = (AV *)POPs;
483 } 547 }
484 548
485 PUTBACK; 549 PUTBACK;
486 } 550 }
551
552 slf_frame = c->slf_frame;
553 CORO_THROW = c->except;
487} 554}
488 555
489static void 556static void
490save_perl (pTHX_ Coro__State c) 557save_perl (pTHX_ Coro__State c)
491{ 558{
559 c->except = CORO_THROW;
560 c->slf_frame = slf_frame;
561
492 { 562 {
493 dSP; 563 dSP;
494 I32 cxix = cxstack_ix; 564 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 565 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 566 PERL_SI *top_si = PL_curstackinfo;
… …
551 c->mainstack = PL_mainstack; 621 c->mainstack = PL_mainstack;
552 622
553 { 623 {
554 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 624 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
555 625
556 slot->defav = GvAV (PL_defgv); 626 slot->defav = GvAV (PL_defgv);
557 slot->defsv = DEFSV; 627 slot->defsv = DEFSV;
558 slot->errsv = ERRSV; 628 slot->errsv = ERRSV;
559 slot->irsgv = GvSV (irsgv); 629 slot->irsgv = GvSV (irsgv);
630 slot->hinthv = GvHV (PL_hintgv);
560 631
561 #define VAR(name,type) slot->name = PL_ ## name; 632 #define VAR(name,type) slot->name = PL_ ## name;
562 # include "state.h" 633 # include "state.h"
563 #undef VAR 634 #undef VAR
564 } 635 }
565} 636}
566 637
567/* 638/*
568 * allocate various perl stacks. This is an exact copy 639 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 640 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 641 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 642 * not usually need a lot of stackspace.
572 */ 643 */
573#if CORO_PREFER_PERL_FUNCTIONS 644#if CORO_PREFER_PERL_FUNCTIONS
574# define coro_init_stacks init_stacks 645# define coro_init_stacks(thx) init_stacks ()
575#else 646#else
576static void 647static void
577coro_init_stacks (pTHX) 648coro_init_stacks (pTHX)
578{ 649{
579 PL_curstackinfo = new_stackinfo(32, 8); 650 PL_curstackinfo = new_stackinfo(32, 8);
… …
616 687
617/* 688/*
618 * destroy the stacks, the callchain etc... 689 * destroy the stacks, the callchain etc...
619 */ 690 */
620static void 691static void
621coro_destroy_stacks (pTHX) 692coro_destruct_stacks (pTHX)
622{ 693{
623 while (PL_curstackinfo->si_next) 694 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 695 PL_curstackinfo = PL_curstackinfo->si_next;
625 696
626 while (PL_curstackinfo) 697 while (PL_curstackinfo)
… …
642#if !PERL_VERSION_ATLEAST (5,10,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
643 Safefree (PL_retstack); 714 Safefree (PL_retstack);
644#endif 715#endif
645} 716}
646 717
718#define CORO_RSS \
719 rss += sizeof (SYM (curstackinfo)); \
720 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
721 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
722 rss += SYM (tmps_max) * sizeof (SV *); \
723 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
724 rss += SYM (scopestack_max) * sizeof (I32); \
725 rss += SYM (savestack_max) * sizeof (ANY);
726
647static size_t 727static size_t
648coro_rss (pTHX_ struct coro *coro) 728coro_rss (pTHX_ struct coro *coro)
649{ 729{
650 size_t rss = sizeof (*coro); 730 size_t rss = sizeof (*coro);
651 731
652 if (coro->mainstack) 732 if (coro->mainstack)
653 { 733 {
654 perl_slots tmp_slot;
655 perl_slots *slot;
656
657 if (coro->flags & CF_RUNNING) 734 if (coro->flags & CF_RUNNING)
658 { 735 {
659 slot = &tmp_slot; 736 #define SYM(sym) PL_ ## sym
660 737 CORO_RSS;
661 #define VAR(name,type) slot->name = PL_ ## name;
662 # include "state.h"
663 #undef VAR 738 #undef SYM
664 } 739 }
665 else 740 else
666 slot = coro->slot; 741 {
667 742 #define SYM(sym) coro->slot->sym
668 rss += sizeof (slot->curstackinfo); 743 CORO_RSS;
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 744 #undef SYM
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 745 }
671 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY);
675
676#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *);
678#endif
679 } 746 }
680 747
681 return rss; 748 return rss;
682} 749}
683 750
… …
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 753static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 754static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
688static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); 755static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
689 756
690/* apparently < 5.8.8 */ 757/* apparently < 5.8.8 */
691#undef MgPV_nolen_const
692#ifndef MgPV_nolen_const 758#ifndef MgPV_nolen_const
693#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 759#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
694 SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \ 760 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
695 (const char*)(mg)->mg_ptr) 761 (const char*)(mg)->mg_ptr)
696#endif 762#endif
697 763
698/* 764/*
699 * This overrides the default magic get method of %SIG elements. 765 * This overrides the default magic get method of %SIG elements.
… …
773 839
774 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 840 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
775} 841}
776 842
777static void 843static void
844prepare_nop (pTHX_ struct coro_transfer_args *ta)
845{
846 /* kind of mega-hacky, but works */
847 ta->next = ta->prev = (struct coro *)ta;
848}
849
850static int
851slf_check_nop (pTHX_ struct CoroSLF *frame)
852{
853 return 0;
854}
855
856static int
857slf_check_repeat (pTHX_ struct CoroSLF *frame)
858{
859 return 1;
860}
861
862static UNOP coro_setup_op;
863
864static void NOINLINE /* noinline to keep it out of the transfer fast path */
778coro_setup (pTHX_ struct coro *coro) 865coro_setup (pTHX_ struct coro *coro)
779{ 866{
780 /* 867 /*
781 * emulate part of the perl startup here. 868 * emulate part of the perl startup here.
782 */ 869 */
… …
784 871
785 PL_runops = RUNOPS_DEFAULT; 872 PL_runops = RUNOPS_DEFAULT;
786 PL_curcop = &PL_compiling; 873 PL_curcop = &PL_compiling;
787 PL_in_eval = EVAL_NULL; 874 PL_in_eval = EVAL_NULL;
788 PL_comppad = 0; 875 PL_comppad = 0;
876 PL_comppad_name = 0;
877 PL_comppad_name_fill = 0;
878 PL_comppad_name_floor = 0;
789 PL_curpm = 0; 879 PL_curpm = 0;
790 PL_curpad = 0; 880 PL_curpad = 0;
791 PL_localizing = 0; 881 PL_localizing = 0;
792 PL_dirty = 0; 882 PL_dirty = 0;
793 PL_restartop = 0; 883 PL_restartop = 0;
794#if PERL_VERSION_ATLEAST (5,10,0) 884#if PERL_VERSION_ATLEAST (5,10,0)
795 PL_parser = 0; 885 PL_parser = 0;
796#endif 886#endif
887 PL_hints = 0;
797 888
798 /* recreate the die/warn hooks */ 889 /* recreate the die/warn hooks */
799 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 890 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
800 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 891 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
801 892
802 GvSV (PL_defgv) = newSV (0); 893 GvSV (PL_defgv) = newSV (0);
803 GvAV (PL_defgv) = coro->args; coro->args = 0; 894 GvAV (PL_defgv) = coro->args; coro->args = 0;
804 GvSV (PL_errgv) = newSV (0); 895 GvSV (PL_errgv) = newSV (0);
805 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 896 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
897 GvHV (PL_hintgv) = 0;
806 PL_rs = newSVsv (GvSV (irsgv)); 898 PL_rs = newSVsv (GvSV (irsgv));
807 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 899 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
808 900
809 { 901 {
810 dSP; 902 dSP;
811 LOGOP myop; 903 UNOP myop;
812 904
813 Zero (&myop, 1, LOGOP); 905 Zero (&myop, 1, UNOP);
814 myop.op_next = Nullop; 906 myop.op_next = Nullop;
907 myop.op_type = OP_ENTERSUB;
815 myop.op_flags = OPf_WANT_VOID; 908 myop.op_flags = OPf_WANT_VOID;
816 909
817 PUSHMARK (SP); 910 PUSHMARK (SP);
818 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 911 PUSHs ((SV *)coro->startcv);
819 PUTBACK; 912 PUTBACK;
820 PL_op = (OP *)&myop; 913 PL_op = (OP *)&myop;
821 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
822 SPAGAIN;
823 } 915 }
824 916
825 /* this newly created coroutine might be run on an existing cctx which most 917 /* this newly created coroutine might be run on an existing cctx which most
826 * likely was suspended in set_stacklevel, called from entersub. 918 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
827 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
828 * so we ENTER here for symmetry
829 */ 919 */
830 ENTER; 920 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
831} 921 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
832 922
923 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
924 coro_setup_op.op_next = PL_op;
925 coro_setup_op.op_type = OP_ENTERSUB;
926 coro_setup_op.op_ppaddr = pp_slf;
927 /* no flags etc. required, as an init function won't be called */
928
929 PL_op = (OP *)&coro_setup_op;
930
931 /* copy throw, in case it was set before coro_setup */
932 CORO_THROW = coro->except;
933}
934
833static void 935static void
834coro_destroy (pTHX_ struct coro *coro) 936coro_destruct (pTHX_ struct coro *coro)
835{ 937{
836 if (!IN_DESTRUCT) 938 if (!IN_DESTRUCT)
837 { 939 {
838 /* restore all saved variables and stuff */ 940 /* restore all saved variables and stuff */
839 LEAVE_SCOPE (0); 941 LEAVE_SCOPE (0);
… …
854 SvREFCNT_dec (GvAV (PL_defgv)); 956 SvREFCNT_dec (GvAV (PL_defgv));
855 SvREFCNT_dec (GvSV (PL_errgv)); 957 SvREFCNT_dec (GvSV (PL_errgv));
856 SvREFCNT_dec (PL_defoutgv); 958 SvREFCNT_dec (PL_defoutgv);
857 SvREFCNT_dec (PL_rs); 959 SvREFCNT_dec (PL_rs);
858 SvREFCNT_dec (GvSV (irsgv)); 960 SvREFCNT_dec (GvSV (irsgv));
961 SvREFCNT_dec (GvHV (PL_hintgv));
859 962
860 SvREFCNT_dec (PL_diehook); 963 SvREFCNT_dec (PL_diehook);
861 SvREFCNT_dec (PL_warnhook); 964 SvREFCNT_dec (PL_warnhook);
862 965
863 SvREFCNT_dec (coro->saved_deffh); 966 SvREFCNT_dec (coro->saved_deffh);
864 SvREFCNT_dec (coro->throw); 967 SvREFCNT_dec (coro->rouse_cb);
968 SvREFCNT_dec (coro->invoke_cb);
969 SvREFCNT_dec (coro->invoke_av);
865 970
866 coro_destroy_stacks (aTHX); 971 coro_destruct_stacks (aTHX);
867} 972}
868 973
869static void 974INLINE void
870free_coro_mortal (pTHX) 975free_coro_mortal (pTHX)
871{ 976{
872 if (expect_true (coro_mortal)) 977 if (expect_true (coro_mortal))
873 { 978 {
874 SvREFCNT_dec (coro_mortal); 979 SvREFCNT_dec (coro_mortal);
… …
879static int 984static int
880runops_trace (pTHX) 985runops_trace (pTHX)
881{ 986{
882 COP *oldcop = 0; 987 COP *oldcop = 0;
883 int oldcxix = -2; 988 int oldcxix = -2;
884 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
885 coro_cctx *cctx = coro->cctx;
886 989
887 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 990 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
888 { 991 {
889 PERL_ASYNC_CHECK (); 992 PERL_ASYNC_CHECK ();
890 993
891 if (cctx->flags & CC_TRACE_ALL) 994 if (cctx_current->flags & CC_TRACE_ALL)
892 { 995 {
893 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 996 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
894 { 997 {
895 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 998 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
896 SV **bot, **top; 999 SV **bot, **top;
897 AV *av = newAV (); /* return values */ 1000 AV *av = newAV (); /* return values */
898 SV **cb; 1001 SV **cb;
… …
908 : cx->blk_gimme == G_SCALAR ? bot + 1 1011 : cx->blk_gimme == G_SCALAR ? bot + 1
909 : bot; 1012 : bot;
910 1013
911 av_extend (av, top - bot); 1014 av_extend (av, top - bot);
912 while (bot < top) 1015 while (bot < top)
913 av_push (av, SvREFCNT_inc (*bot++)); 1016 av_push (av, SvREFCNT_inc_NN (*bot++));
914 1017
915 PL_runops = RUNOPS_DEFAULT; 1018 PL_runops = RUNOPS_DEFAULT;
916 ENTER; 1019 ENTER;
917 SAVETMPS; 1020 SAVETMPS;
918 EXTEND (SP, 3); 1021 EXTEND (SP, 3);
… …
935 1038
936 if (PL_curcop != &PL_compiling) 1039 if (PL_curcop != &PL_compiling)
937 { 1040 {
938 SV **cb; 1041 SV **cb;
939 1042
940 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1043 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
941 { 1044 {
942 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1045 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
943 1046
944 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1047 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
945 { 1048 {
946 runops_proc_t old_runops = PL_runops;
947 dSP; 1049 dSP;
948 GV *gv = CvGV (cx->blk_sub.cv); 1050 GV *gv = CvGV (cx->blk_sub.cv);
949 SV *fullname = sv_2mortal (newSV (0)); 1051 SV *fullname = sv_2mortal (newSV (0));
950 1052
951 if (isGV (gv)) 1053 if (isGV (gv))
… …
956 SAVETMPS; 1058 SAVETMPS;
957 EXTEND (SP, 3); 1059 EXTEND (SP, 3);
958 PUSHMARK (SP); 1060 PUSHMARK (SP);
959 PUSHs (&PL_sv_yes); 1061 PUSHs (&PL_sv_yes);
960 PUSHs (fullname); 1062 PUSHs (fullname);
961 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1063 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
962 PUTBACK; 1064 PUTBACK;
963 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1065 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
964 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1066 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
965 SPAGAIN; 1067 SPAGAIN;
966 FREETMPS; 1068 FREETMPS;
… …
969 } 1071 }
970 1072
971 oldcxix = cxstack_ix; 1073 oldcxix = cxstack_ix;
972 } 1074 }
973 1075
974 if (cctx->flags & CC_TRACE_LINE) 1076 if (cctx_current->flags & CC_TRACE_LINE)
975 { 1077 {
976 dSP; 1078 dSP;
977 1079
978 PL_runops = RUNOPS_DEFAULT; 1080 PL_runops = RUNOPS_DEFAULT;
979 ENTER; 1081 ENTER;
… …
998 1100
999 TAINT_NOT; 1101 TAINT_NOT;
1000 return 0; 1102 return 0;
1001} 1103}
1002 1104
1003/* inject a fake call to Coro::State::_cctx_init into the execution */ 1105static struct CoroSLF cctx_ssl_frame;
1004/* _cctx_init should be careful, as it could be called at almost any time */ 1106
1005/* during execution of a perl program */ 1107static void
1108slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1109{
1110 ta->prev = 0;
1111}
1112
1113static int
1114slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1115{
1116 *frame = cctx_ssl_frame;
1117
1118 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1119}
1120
1121/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1006static void NOINLINE 1122static void NOINLINE
1007cctx_prepare (pTHX_ coro_cctx *cctx) 1123cctx_prepare (pTHX)
1008{ 1124{
1009 dSP;
1010 LOGOP myop;
1011
1012 PL_top_env = &PL_start_env; 1125 PL_top_env = &PL_start_env;
1013 1126
1014 if (cctx->flags & CC_TRACE) 1127 if (cctx_current->flags & CC_TRACE)
1015 PL_runops = runops_trace; 1128 PL_runops = runops_trace;
1016 1129
1017 Zero (&myop, 1, LOGOP); 1130 /* we already must be executing an SLF op, there is no other valid way
1018 myop.op_next = PL_op; 1131 * that can lead to creation of a new cctx */
1019 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1132 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1133 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1020 1134
1021 PUSHMARK (SP); 1135 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1022 EXTEND (SP, 2); 1136 cctx_ssl_frame = slf_frame;
1023 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1137
1024 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1138 slf_frame.prepare = slf_prepare_set_stacklevel;
1025 PUTBACK; 1139 slf_frame.check = slf_check_set_stacklevel;
1026 PL_op = (OP *)&myop; 1140}
1027 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1141
1028 SPAGAIN; 1142/* the tail of transfer: execute stuff we can only do after a transfer */
1143INLINE void
1144transfer_tail (pTHX)
1145{
1146 free_coro_mortal (aTHX);
1029} 1147}
1030 1148
1031/* 1149/*
1032 * this is a _very_ stripped down perl interpreter ;) 1150 * this is a _very_ stripped down perl interpreter ;)
1033 */ 1151 */
1034static void 1152static void
1035cctx_run (void *arg) 1153cctx_run (void *arg)
1036{ 1154{
1155#ifdef USE_ITHREADS
1156# if CORO_PTHREAD
1157 PERL_SET_CONTEXT (coro_thx);
1158# endif
1159#endif
1160 {
1037 dTHX; 1161 dTHX;
1038 1162
1039 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1163 /* normally we would need to skip the entersub here */
1040 UNLOCK; 1164 /* not doing so will re-execute it, which is exactly what we want */
1041
1042 /* we now skip the entersub that lead to transfer() */
1043 PL_op = PL_op->op_next; 1165 /* PL_nop = PL_nop->op_next */
1044 1166
1045 /* inject a fake subroutine call to cctx_init */ 1167 /* inject a fake subroutine call to cctx_init */
1046 cctx_prepare (aTHX_ (coro_cctx *)arg); 1168 cctx_prepare (aTHX);
1047 1169
1170 /* cctx_run is the alternative tail of transfer() */
1171 transfer_tail (aTHX);
1172
1048 /* somebody or something will hit me for both perl_run and PL_restartop */ 1173 /* somebody or something will hit me for both perl_run and PL_restartop */
1049 PL_restartop = PL_op; 1174 PL_restartop = PL_op;
1050 perl_run (PL_curinterp); 1175 perl_run (PL_curinterp);
1051
1052 /* 1176 /*
1177 * Unfortunately, there is no way to get at the return values of the
1178 * coro body here, as perl_run destroys these
1179 */
1180
1181 /*
1053 * If perl-run returns we assume exit() was being called or the coro 1182 * If perl-run returns we assume exit() was being called or the coro
1054 * fell off the end, which seems to be the only valid (non-bug) 1183 * fell off the end, which seems to be the only valid (non-bug)
1055 * reason for perl_run to return. We try to exit by jumping to the 1184 * reason for perl_run to return. We try to exit by jumping to the
1056 * bootstrap-time "top" top_env, as we cannot restore the "main" 1185 * bootstrap-time "top" top_env, as we cannot restore the "main"
1057 * coroutine as Coro has no such concept 1186 * coroutine as Coro has no such concept.
1187 * This actually isn't valid with the pthread backend, but OSes requiring
1188 * that backend are too broken to do it in a standards-compliant way.
1058 */ 1189 */
1059 PL_top_env = main_top_env; 1190 PL_top_env = main_top_env;
1060 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1191 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1192 }
1061} 1193}
1062 1194
1063static coro_cctx * 1195static coro_cctx *
1064cctx_new () 1196cctx_new ()
1065{ 1197{
1066 coro_cctx *cctx; 1198 coro_cctx *cctx;
1199
1200 ++cctx_count;
1201 New (0, cctx, 1, coro_cctx);
1202
1203 cctx->gen = cctx_gen;
1204 cctx->flags = 0;
1205 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1206
1207 return cctx;
1208}
1209
1210/* create a new cctx only suitable as source */
1211static coro_cctx *
1212cctx_new_empty ()
1213{
1214 coro_cctx *cctx = cctx_new ();
1215
1216 cctx->sptr = 0;
1217 coro_create (&cctx->cctx, 0, 0, 0, 0);
1218
1219 return cctx;
1220}
1221
1222/* create a new cctx suitable as destination/running a perl interpreter */
1223static coro_cctx *
1224cctx_new_run ()
1225{
1226 coro_cctx *cctx = cctx_new ();
1067 void *stack_start; 1227 void *stack_start;
1068 size_t stack_size; 1228 size_t stack_size;
1069 1229
1070 ++cctx_count;
1071
1072 Newz (0, cctx, 1, coro_cctx);
1073
1074#if HAVE_MMAP 1230#if HAVE_MMAP
1075 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1231 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1076 /* mmap supposedly does allocate-on-write for us */ 1232 /* mmap supposedly does allocate-on-write for us */
1077 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1233 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1078 1234
1079 if (cctx->sptr != (void *)-1) 1235 if (cctx->sptr != (void *)-1)
1080 { 1236 {
1081# if CORO_STACKGUARD 1237 #if CORO_STACKGUARD
1082 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1238 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1083# endif 1239 #endif
1084 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1240 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1085 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1241 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1086 cctx->flags |= CC_MAPPED; 1242 cctx->flags |= CC_MAPPED;
1087 } 1243 }
1088 else 1244 else
1089#endif 1245#endif
1090 { 1246 {
1091 cctx->ssize = coro_stacksize * (long)sizeof (long); 1247 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1092 New (0, cctx->sptr, coro_stacksize, long); 1248 New (0, cctx->sptr, cctx_stacksize, long);
1093 1249
1094 if (!cctx->sptr) 1250 if (!cctx->sptr)
1095 { 1251 {
1096 perror ("FATAL: unable to allocate stack for coroutine"); 1252 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1097 _exit (EXIT_FAILURE); 1253 _exit (EXIT_FAILURE);
1098 } 1254 }
1099 1255
1100 stack_start = cctx->sptr; 1256 stack_start = cctx->sptr;
1101 stack_size = cctx->ssize; 1257 stack_size = cctx->ssize;
1102 } 1258 }
1103 1259
1104 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1260 #if CORO_USE_VALGRIND
1261 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1262 #endif
1263
1105 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1264 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1106 1265
1107 return cctx; 1266 return cctx;
1108} 1267}
1109 1268
… …
1111cctx_destroy (coro_cctx *cctx) 1270cctx_destroy (coro_cctx *cctx)
1112{ 1271{
1113 if (!cctx) 1272 if (!cctx)
1114 return; 1273 return;
1115 1274
1275 assert (cctx != cctx_current);//D temporary
1276
1116 --cctx_count; 1277 --cctx_count;
1278 coro_destroy (&cctx->cctx);
1117 1279
1280 /* coro_transfer creates new, empty cctx's */
1281 if (cctx->sptr)
1282 {
1118#if CORO_USE_VALGRIND 1283 #if CORO_USE_VALGRIND
1119 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1284 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1120#endif 1285 #endif
1121 1286
1122#if HAVE_MMAP 1287#if HAVE_MMAP
1123 if (cctx->flags & CC_MAPPED) 1288 if (cctx->flags & CC_MAPPED)
1124 munmap (cctx->sptr, cctx->ssize); 1289 munmap (cctx->sptr, cctx->ssize);
1125 else 1290 else
1126#endif 1291#endif
1127 Safefree (cctx->sptr); 1292 Safefree (cctx->sptr);
1293 }
1128 1294
1129 Safefree (cctx); 1295 Safefree (cctx);
1130} 1296}
1131 1297
1132/* wether this cctx should be destructed */ 1298/* wether this cctx should be destructed */
1133#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1299#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1134 1300
1135static coro_cctx * 1301static coro_cctx *
1136cctx_get (pTHX) 1302cctx_get (pTHX)
1137{ 1303{
1138 while (expect_true (cctx_first)) 1304 while (expect_true (cctx_first))
… …
1145 return cctx; 1311 return cctx;
1146 1312
1147 cctx_destroy (cctx); 1313 cctx_destroy (cctx);
1148 } 1314 }
1149 1315
1150 return cctx_new (); 1316 return cctx_new_run ();
1151} 1317}
1152 1318
1153static void 1319static void
1154cctx_put (coro_cctx *cctx) 1320cctx_put (coro_cctx *cctx)
1155{ 1321{
1322 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1323
1156 /* free another cctx if overlimit */ 1324 /* free another cctx if overlimit */
1157 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1325 if (expect_false (cctx_idle >= cctx_max_idle))
1158 { 1326 {
1159 coro_cctx *first = cctx_first; 1327 coro_cctx *first = cctx_first;
1160 cctx_first = first->next; 1328 cctx_first = first->next;
1161 --cctx_idle; 1329 --cctx_idle;
1162 1330
… …
1171/** coroutine switching *****************************************************/ 1339/** coroutine switching *****************************************************/
1172 1340
1173static void 1341static void
1174transfer_check (pTHX_ struct coro *prev, struct coro *next) 1342transfer_check (pTHX_ struct coro *prev, struct coro *next)
1175{ 1343{
1344 /* TODO: throwing up here is considered harmful */
1345
1176 if (expect_true (prev != next)) 1346 if (expect_true (prev != next))
1177 { 1347 {
1178 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1348 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1179 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1349 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1180 1350
1181 if (expect_false (next->flags & CF_RUNNING)) 1351 if (expect_false (next->flags & CF_RUNNING))
1182 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1183 1353
1184 if (expect_false (next->flags & CF_DESTROYED)) 1354 if (expect_false (next->flags & CF_DESTROYED))
1185 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1355 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1186 1356
1187#if !PERL_VERSION_ATLEAST (5,10,0) 1357#if !PERL_VERSION_ATLEAST (5,10,0)
1188 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1358 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1189 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1359 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1190#endif 1360#endif
1191 } 1361 }
1192} 1362}
1193 1363
1194/* always use the TRANSFER macro */ 1364/* always use the TRANSFER macro */
1195static void NOINLINE 1365static void NOINLINE /* noinline so we have a fixed stackframe */
1196transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1366transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1197{ 1367{
1198 dSTACKLEVEL; 1368 dSTACKLEVEL;
1199 static volatile int has_throw;
1200 1369
1201 /* sometimes transfer is only called to set idle_sp */ 1370 /* sometimes transfer is only called to set idle_sp */
1202 if (expect_false (!next)) 1371 if (expect_false (!prev))
1203 { 1372 {
1204 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1373 cctx_current->idle_sp = STACKLEVEL;
1205 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1374 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1206 } 1375 }
1207 else if (expect_true (prev != next)) 1376 else if (expect_true (prev != next))
1208 { 1377 {
1209 coro_cctx *prev__cctx; 1378 coro_cctx *cctx_prev;
1210 1379
1211 if (expect_false (prev->flags & CF_NEW)) 1380 if (expect_false (prev->flags & CF_NEW))
1212 { 1381 {
1213 /* create a new empty context */ 1382 /* create a new empty/source context */
1214 Newz (0, prev->cctx, 1, coro_cctx);
1215 prev->flags &= ~CF_NEW; 1383 prev->flags &= ~CF_NEW;
1216 prev->flags |= CF_RUNNING; 1384 prev->flags |= CF_RUNNING;
1217 } 1385 }
1218 1386
1219 prev->flags &= ~CF_RUNNING; 1387 prev->flags &= ~CF_RUNNING;
1220 next->flags |= CF_RUNNING; 1388 next->flags |= CF_RUNNING;
1221
1222 LOCK;
1223 1389
1224 /* first get rid of the old state */ 1390 /* first get rid of the old state */
1225 save_perl (aTHX_ prev); 1391 save_perl (aTHX_ prev);
1226 1392
1227 if (expect_false (next->flags & CF_NEW)) 1393 if (expect_false (next->flags & CF_NEW))
… …
1232 coro_setup (aTHX_ next); 1398 coro_setup (aTHX_ next);
1233 } 1399 }
1234 else 1400 else
1235 load_perl (aTHX_ next); 1401 load_perl (aTHX_ next);
1236 1402
1237 prev__cctx = prev->cctx; 1403 assert (!prev->cctx);//D temporary
1238 1404
1239 /* possibly "free" the cctx */ 1405 /* possibly untie and reuse the cctx */
1240 if (expect_true ( 1406 if (expect_true (
1241 prev__cctx->idle_sp == STACKLEVEL 1407 cctx_current->idle_sp == STACKLEVEL
1242 && !(prev__cctx->flags & CC_TRACE) 1408 && !(cctx_current->flags & CC_TRACE)
1243 && !force_cctx 1409 && !force_cctx
1244 )) 1410 ))
1245 { 1411 {
1246 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1412 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1247 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1413 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1248 1414
1249 prev->cctx = 0;
1250
1251 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1415 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1252 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1416 /* without this the next cctx_get might destroy the running cctx while still in use */
1253 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1417 if (expect_false (CCTX_EXPIRED (cctx_current)))
1254 if (!next->cctx) 1418 if (expect_true (!next->cctx))
1255 next->cctx = cctx_get (aTHX); 1419 next->cctx = cctx_get (aTHX);
1256 1420
1257 cctx_put (prev__cctx); 1421 cctx_put (cctx_current);
1258 } 1422 }
1423 else
1424 prev->cctx = cctx_current;
1259 1425
1260 ++next->usecount; 1426 ++next->usecount;
1261 1427
1262 if (expect_true (!next->cctx)) 1428 cctx_prev = cctx_current;
1263 next->cctx = cctx_get (aTHX); 1429 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1264 1430
1265 has_throw = !!next->throw; 1431 next->cctx = 0;
1266 1432
1267 if (expect_false (prev__cctx != next->cctx)) 1433 if (expect_false (cctx_prev != cctx_current))
1268 { 1434 {
1269 prev__cctx->top_env = PL_top_env; 1435 cctx_prev->top_env = PL_top_env;
1270 PL_top_env = next->cctx->top_env; 1436 PL_top_env = cctx_current->top_env;
1271 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1437 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1272 } 1438 }
1273 1439
1274 free_coro_mortal (aTHX); 1440 transfer_tail (aTHX);
1275 UNLOCK;
1276
1277 if (expect_false (has_throw))
1278 {
1279 struct coro *coro = SvSTATE (coro_current);
1280
1281 if (coro->throw)
1282 {
1283 SV *exception = coro->throw;
1284 coro->throw = 0;
1285 sv_setsv (ERRSV, exception);
1286 croak (0);
1287 }
1288 }
1289 } 1441 }
1290} 1442}
1291
1292struct transfer_args
1293{
1294 struct coro *prev, *next;
1295};
1296 1443
1297#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1444#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1298#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1445#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1299 1446
1300/** high level stuff ********************************************************/ 1447/** high level stuff ********************************************************/
… …
1302static int 1449static int
1303coro_state_destroy (pTHX_ struct coro *coro) 1450coro_state_destroy (pTHX_ struct coro *coro)
1304{ 1451{
1305 if (coro->flags & CF_DESTROYED) 1452 if (coro->flags & CF_DESTROYED)
1306 return 0; 1453 return 0;
1454
1455 if (coro->on_destroy)
1456 coro->on_destroy (aTHX_ coro);
1307 1457
1308 coro->flags |= CF_DESTROYED; 1458 coro->flags |= CF_DESTROYED;
1309 1459
1310 if (coro->flags & CF_READY) 1460 if (coro->flags & CF_READY)
1311 { 1461 {
1312 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1462 /* reduce nready, as destroying a ready coro effectively unreadies it */
1313 /* alternative: look through all ready queues and remove the coro */ 1463 /* alternative: look through all ready queues and remove the coro */
1314 LOCK;
1315 --coro_nready; 1464 --coro_nready;
1316 UNLOCK;
1317 } 1465 }
1318 else 1466 else
1319 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1467 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1320 1468
1321 if (coro->mainstack && coro->mainstack != main_mainstack) 1469 if (coro->mainstack && coro->mainstack != main_mainstack)
1322 { 1470 {
1323 struct coro temp; 1471 struct coro temp;
1324 1472
1325 if (coro->flags & CF_RUNNING) 1473 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1326 croak ("FATAL: tried to destroy currently running coroutine");
1327 1474
1328 save_perl (aTHX_ &temp); 1475 save_perl (aTHX_ &temp);
1329 load_perl (aTHX_ coro); 1476 load_perl (aTHX_ coro);
1330 1477
1331 coro_destroy (aTHX_ coro); 1478 coro_destruct (aTHX_ coro);
1332 1479
1333 load_perl (aTHX_ &temp); 1480 load_perl (aTHX_ &temp);
1334 1481
1335 coro->slot = 0; 1482 coro->slot = 0;
1336 } 1483 }
1337 1484
1338 cctx_destroy (coro->cctx); 1485 cctx_destroy (coro->cctx);
1486 SvREFCNT_dec (coro->startcv);
1339 SvREFCNT_dec (coro->args); 1487 SvREFCNT_dec (coro->args);
1488 SvREFCNT_dec (CORO_THROW);
1340 1489
1341 if (coro->next) coro->next->prev = coro->prev; 1490 if (coro->next) coro->next->prev = coro->prev;
1342 if (coro->prev) coro->prev->next = coro->next; 1491 if (coro->prev) coro->prev->next = coro->next;
1343 if (coro == coro_first) coro_first = coro->next; 1492 if (coro == coro_first) coro_first = coro->next;
1344 1493
… …
1382# define MGf_DUP 0 1531# define MGf_DUP 0
1383#endif 1532#endif
1384}; 1533};
1385 1534
1386static void 1535static void
1387prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1536prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1388{ 1537{
1389 ta->prev = SvSTATE (prev_sv); 1538 ta->prev = SvSTATE (prev_sv);
1390 ta->next = SvSTATE (next_sv); 1539 ta->next = SvSTATE (next_sv);
1391 TRANSFER_CHECK (*ta); 1540 TRANSFER_CHECK (*ta);
1392} 1541}
1393 1542
1394static void 1543static void
1395api_transfer (SV *prev_sv, SV *next_sv) 1544api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1396{ 1545{
1397 dTHX;
1398 struct transfer_args ta; 1546 struct coro_transfer_args ta;
1399 1547
1400 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1548 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1401 TRANSFER (ta, 1); 1549 TRANSFER (ta, 1);
1402} 1550}
1403 1551
1552/*****************************************************************************/
1553/* gensub: simple closure generation utility */
1554
1555#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1556
1557/* create a closure from XS, returns a code reference */
1558/* the arg can be accessed via GENSUB_ARG from the callback */
1559/* the callback must use dXSARGS/XSRETURN */
1560static SV *
1561gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1562{
1563 CV *cv = (CV *)newSV (0);
1564
1565 sv_upgrade ((SV *)cv, SVt_PVCV);
1566
1567 CvANON_on (cv);
1568 CvISXSUB_on (cv);
1569 CvXSUB (cv) = xsub;
1570 GENSUB_ARG = arg;
1571
1572 return newRV_noinc ((SV *)cv);
1573}
1574
1404/** Coro ********************************************************************/ 1575/** Coro ********************************************************************/
1405 1576
1406static void 1577INLINE void
1407coro_enq (pTHX_ SV *coro_sv) 1578coro_enq (pTHX_ struct coro *coro)
1408{ 1579{
1409 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1580 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1410} 1581}
1411 1582
1412static SV * 1583INLINE SV *
1413coro_deq (pTHX) 1584coro_deq (pTHX)
1414{ 1585{
1415 int prio; 1586 int prio;
1416 1587
1417 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1588 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1420 1591
1421 return 0; 1592 return 0;
1422} 1593}
1423 1594
1424static int 1595static int
1425api_ready (SV *coro_sv) 1596api_ready (pTHX_ SV *coro_sv)
1426{ 1597{
1427 dTHX;
1428 struct coro *coro; 1598 struct coro *coro;
1429 SV *sv_hook; 1599 SV *sv_hook;
1430 void (*xs_hook)(void); 1600 void (*xs_hook)(void);
1431 1601
1432 if (SvROK (coro_sv))
1433 coro_sv = SvRV (coro_sv);
1434
1435 coro = SvSTATE (coro_sv); 1602 coro = SvSTATE (coro_sv);
1436 1603
1437 if (coro->flags & CF_READY) 1604 if (coro->flags & CF_READY)
1438 return 0; 1605 return 0;
1439 1606
1440 coro->flags |= CF_READY; 1607 coro->flags |= CF_READY;
1441 1608
1442 LOCK;
1443
1444 sv_hook = coro_nready ? 0 : coro_readyhook; 1609 sv_hook = coro_nready ? 0 : coro_readyhook;
1445 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1610 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1446 1611
1447 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1612 coro_enq (aTHX_ coro);
1448 ++coro_nready; 1613 ++coro_nready;
1449 1614
1450 UNLOCK;
1451
1452 if (sv_hook) 1615 if (sv_hook)
1453 { 1616 {
1454 dSP; 1617 dSP;
1455 1618
1456 ENTER; 1619 ENTER;
1457 SAVETMPS; 1620 SAVETMPS;
1458 1621
1459 PUSHMARK (SP); 1622 PUSHMARK (SP);
1460 PUTBACK; 1623 PUTBACK;
1461 call_sv (sv_hook, G_DISCARD); 1624 call_sv (sv_hook, G_VOID | G_DISCARD);
1462 SPAGAIN;
1463 1625
1464 FREETMPS; 1626 FREETMPS;
1465 LEAVE; 1627 LEAVE;
1466 } 1628 }
1467 1629
… …
1470 1632
1471 return 1; 1633 return 1;
1472} 1634}
1473 1635
1474static int 1636static int
1475api_is_ready (SV *coro_sv) 1637api_is_ready (pTHX_ SV *coro_sv)
1476{ 1638{
1477 dTHX;
1478 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1639 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1479} 1640}
1480 1641
1481static void 1642/* expects to own a reference to next->hv */
1643INLINE void
1482prepare_schedule (pTHX_ struct transfer_args *ta) 1644prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1483{ 1645{
1484 SV *prev_sv, *next_sv;
1485
1486 for (;;)
1487 {
1488 LOCK;
1489 next_sv = coro_deq (aTHX);
1490
1491 /* nothing to schedule: call the idle handler */
1492 if (expect_false (!next_sv))
1493 {
1494 dSP;
1495 UNLOCK;
1496
1497 ENTER;
1498 SAVETMPS;
1499
1500 PUSHMARK (SP);
1501 PUTBACK;
1502 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1503 SPAGAIN;
1504
1505 FREETMPS;
1506 LEAVE;
1507 continue;
1508 }
1509
1510 ta->next = SvSTATE (next_sv);
1511
1512 /* cannot transfer to destroyed coros, skip and look for next */
1513 if (expect_false (ta->next->flags & CF_DESTROYED))
1514 {
1515 UNLOCK;
1516 SvREFCNT_dec (next_sv);
1517 /* coro_nready is already taken care of by destroy */
1518 continue;
1519 }
1520
1521 --coro_nready;
1522 UNLOCK;
1523 break;
1524 }
1525
1526 /* free this only after the transfer */
1527 prev_sv = SvRV (coro_current); 1646 SV *prev_sv = SvRV (coro_current);
1647
1528 ta->prev = SvSTATE (prev_sv); 1648 ta->prev = SvSTATE_hv (prev_sv);
1649 ta->next = next;
1650
1529 TRANSFER_CHECK (*ta); 1651 TRANSFER_CHECK (*ta);
1530 assert (ta->next->flags & CF_READY); 1652
1531 ta->next->flags &= ~CF_READY;
1532 SvRV_set (coro_current, next_sv); 1653 SvRV_set (coro_current, (SV *)next->hv);
1533 1654
1534 LOCK;
1535 free_coro_mortal (aTHX); 1655 free_coro_mortal (aTHX);
1536 coro_mortal = prev_sv; 1656 coro_mortal = prev_sv;
1537 UNLOCK;
1538} 1657}
1539 1658
1540static void 1659static void
1660prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1661{
1662 for (;;)
1663 {
1664 SV *next_sv = coro_deq (aTHX);
1665
1666 if (expect_true (next_sv))
1667 {
1668 struct coro *next = SvSTATE_hv (next_sv);
1669
1670 /* cannot transfer to destroyed coros, skip and look for next */
1671 if (expect_false (next->flags & CF_DESTROYED))
1672 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1673 else
1674 {
1675 next->flags &= ~CF_READY;
1676 --coro_nready;
1677
1678 prepare_schedule_to (aTHX_ ta, next);
1679 break;
1680 }
1681 }
1682 else
1683 {
1684 /* nothing to schedule: call the idle handler */
1685 if (SvROK (sv_idle)
1686 && SvOBJECT (SvRV (sv_idle)))
1687 {
1688 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1689 api_ready (aTHX_ SvRV (sv_idle));
1690 --coro_nready;
1691 }
1692 else
1693 {
1694 dSP;
1695
1696 ENTER;
1697 SAVETMPS;
1698
1699 PUSHMARK (SP);
1700 PUTBACK;
1701 call_sv (sv_idle, G_VOID | G_DISCARD);
1702
1703 FREETMPS;
1704 LEAVE;
1705 }
1706 }
1707 }
1708}
1709
1710INLINE void
1541prepare_cede (pTHX_ struct transfer_args *ta) 1711prepare_cede (pTHX_ struct coro_transfer_args *ta)
1542{ 1712{
1543 api_ready (coro_current); 1713 api_ready (aTHX_ coro_current);
1544 prepare_schedule (aTHX_ ta); 1714 prepare_schedule (aTHX_ ta);
1545} 1715}
1546 1716
1717INLINE void
1718prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1719{
1720 SV *prev = SvRV (coro_current);
1721
1722 if (coro_nready)
1723 {
1724 prepare_schedule (aTHX_ ta);
1725 api_ready (aTHX_ prev);
1726 }
1727 else
1728 prepare_nop (aTHX_ ta);
1729}
1730
1731static void
1732api_schedule (pTHX)
1733{
1734 struct coro_transfer_args ta;
1735
1736 prepare_schedule (aTHX_ &ta);
1737 TRANSFER (ta, 1);
1738}
1739
1740static void
1741api_schedule_to (pTHX_ SV *coro_sv)
1742{
1743 struct coro_transfer_args ta;
1744 struct coro *next = SvSTATE (coro_sv);
1745
1746 SvREFCNT_inc_NN (coro_sv);
1747 prepare_schedule_to (aTHX_ &ta, next);
1748}
1749
1547static int 1750static int
1548prepare_cede_notself (pTHX_ struct transfer_args *ta) 1751api_cede (pTHX)
1549{ 1752{
1550 if (coro_nready) 1753 struct coro_transfer_args ta;
1551 { 1754
1552 SV *prev = SvRV (coro_current);
1553 prepare_schedule (aTHX_ ta); 1755 prepare_cede (aTHX_ &ta);
1554 api_ready (prev); 1756
1757 if (expect_true (ta.prev != ta.next))
1758 {
1759 TRANSFER (ta, 1);
1555 return 1; 1760 return 1;
1556 } 1761 }
1557 else 1762 else
1558 return 0; 1763 return 0;
1559} 1764}
1560 1765
1561static void
1562api_schedule (void)
1563{
1564 dTHX;
1565 struct transfer_args ta;
1566
1567 prepare_schedule (aTHX_ &ta);
1568 TRANSFER (ta, 1);
1569}
1570
1571static int 1766static int
1572api_cede (void) 1767api_cede_notself (pTHX)
1573{ 1768{
1574 dTHX; 1769 if (coro_nready)
1770 {
1575 struct transfer_args ta; 1771 struct coro_transfer_args ta;
1576 1772
1577 prepare_cede (aTHX_ &ta); 1773 prepare_cede_notself (aTHX_ &ta);
1578
1579 if (expect_true (ta.prev != ta.next))
1580 {
1581 TRANSFER (ta, 1); 1774 TRANSFER (ta, 1);
1582 return 1; 1775 return 1;
1583 } 1776 }
1584 else 1777 else
1585 return 0; 1778 return 0;
1586} 1779}
1587 1780
1588static int 1781static void
1589api_cede_notself (void)
1590{
1591 dTHX;
1592 struct transfer_args ta;
1593
1594 if (prepare_cede_notself (aTHX_ &ta))
1595 {
1596 TRANSFER (ta, 1);
1597 return 1;
1598 }
1599 else
1600 return 0;
1601}
1602
1603static void
1604api_trace (SV *coro_sv, int flags) 1782api_trace (pTHX_ SV *coro_sv, int flags)
1605{ 1783{
1606 dTHX;
1607 struct coro *coro = SvSTATE (coro_sv); 1784 struct coro *coro = SvSTATE (coro_sv);
1608 1785
1786 if (coro->flags & CF_RUNNING)
1787 croak ("cannot enable tracing on a running coroutine, caught");
1788
1609 if (flags & CC_TRACE) 1789 if (flags & CC_TRACE)
1610 { 1790 {
1611 if (!coro->cctx) 1791 if (!coro->cctx)
1612 coro->cctx = cctx_new (); 1792 coro->cctx = cctx_new_run ();
1613 else if (!(coro->cctx->flags & CC_TRACE)) 1793 else if (!(coro->cctx->flags & CC_TRACE))
1614 croak ("cannot enable tracing on coroutine with custom stack"); 1794 croak ("cannot enable tracing on coroutine with custom stack, caught");
1615 1795
1616 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1796 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1617 } 1797 }
1618 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1798 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1619 { 1799 {
… …
1624 else 1804 else
1625 coro->slot->runops = RUNOPS_DEFAULT; 1805 coro->slot->runops = RUNOPS_DEFAULT;
1626 } 1806 }
1627} 1807}
1628 1808
1809static void
1810coro_call_on_destroy (pTHX_ struct coro *coro)
1811{
1812 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1813 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1814
1815 if (on_destroyp)
1816 {
1817 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1818
1819 while (AvFILLp (on_destroy) >= 0)
1820 {
1821 dSP; /* don't disturb outer sp */
1822 SV *cb = av_pop (on_destroy);
1823
1824 PUSHMARK (SP);
1825
1826 if (statusp)
1827 {
1828 int i;
1829 AV *status = (AV *)SvRV (*statusp);
1830 EXTEND (SP, AvFILLp (status) + 1);
1831
1832 for (i = 0; i <= AvFILLp (status); ++i)
1833 PUSHs (AvARRAY (status)[i]);
1834 }
1835
1836 PUTBACK;
1837 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1838 }
1839 }
1840}
1841
1842static void
1843slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1844{
1845 int i;
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *av = newAV ();
1848
1849 av_extend (av, items - 1);
1850 for (i = 0; i < items; ++i)
1851 av_push (av, SvREFCNT_inc_NN (arg [i]));
1852
1853 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1854
1855 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1856 api_ready (aTHX_ sv_manager);
1857
1858 frame->prepare = prepare_schedule;
1859 frame->check = slf_check_repeat;
1860}
1861
1862/*****************************************************************************/
1863/* async pool handler */
1864
1865static int
1866slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1867{
1868 HV *hv = (HV *)SvRV (coro_current);
1869 struct coro *coro = (struct coro *)frame->data;
1870
1871 if (!coro->invoke_cb)
1872 return 1; /* loop till we have invoke */
1873 else
1874 {
1875 hv_store (hv, "desc", sizeof ("desc") - 1,
1876 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1877
1878 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1879
1880 {
1881 dSP;
1882 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1883 PUTBACK;
1884 }
1885
1886 SvREFCNT_dec (GvAV (PL_defgv));
1887 GvAV (PL_defgv) = coro->invoke_av;
1888 coro->invoke_av = 0;
1889
1890 return 0;
1891 }
1892}
1893
1894static void
1895slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 HV *hv = (HV *)SvRV (coro_current);
1898 struct coro *coro = SvSTATE_hv ((SV *)hv);
1899
1900 if (expect_true (coro->saved_deffh))
1901 {
1902 /* subsequent iteration */
1903 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1904 coro->saved_deffh = 0;
1905
1906 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1907 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1908 {
1909 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1910 coro->invoke_av = newAV ();
1911
1912 frame->prepare = prepare_nop;
1913 }
1914 else
1915 {
1916 av_clear (GvAV (PL_defgv));
1917 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1918
1919 coro->prio = 0;
1920
1921 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1922 api_trace (aTHX_ coro_current, 0);
1923
1924 frame->prepare = prepare_schedule;
1925 av_push (av_async_pool, SvREFCNT_inc (hv));
1926 }
1927 }
1928 else
1929 {
1930 /* first iteration, simply fall through */
1931 frame->prepare = prepare_nop;
1932 }
1933
1934 frame->check = slf_check_pool_handler;
1935 frame->data = (void *)coro;
1936}
1937
1938/*****************************************************************************/
1939/* rouse callback */
1940
1941#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1942
1943static void
1944coro_rouse_callback (pTHX_ CV *cv)
1945{
1946 dXSARGS;
1947 SV *data = (SV *)GENSUB_ARG;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 {
1951 /* first call, set args */
1952 AV *av = newAV ();
1953 SV *coro = SvRV (data);
1954
1955 SvRV_set (data, (SV *)av);
1956 api_ready (aTHX_ coro);
1957 SvREFCNT_dec (coro);
1958
1959 /* better take a full copy of the arguments */
1960 while (items--)
1961 av_store (av, items, newSVsv (ST (items)));
1962 }
1963
1964 XSRETURN_EMPTY;
1965}
1966
1967static int
1968slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1969{
1970 SV *data = (SV *)frame->data;
1971
1972 if (CORO_THROW)
1973 return 0;
1974
1975 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1976 return 1;
1977
1978 /* now push all results on the stack */
1979 {
1980 dSP;
1981 AV *av = (AV *)SvRV (data);
1982 int i;
1983
1984 EXTEND (SP, AvFILLp (av) + 1);
1985 for (i = 0; i <= AvFILLp (av); ++i)
1986 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1987
1988 /* we have stolen the elements, so ste length to zero and free */
1989 AvFILLp (av) = -1;
1990 av_undef (av);
1991
1992 PUTBACK;
1993 }
1994
1995 return 0;
1996}
1997
1998static void
1999slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2000{
2001 SV *cb;
2002
2003 if (items)
2004 cb = arg [0];
2005 else
2006 {
2007 struct coro *coro = SvSTATE_current;
2008
2009 if (!coro->rouse_cb)
2010 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2011
2012 cb = sv_2mortal (coro->rouse_cb);
2013 coro->rouse_cb = 0;
2014 }
2015
2016 if (!SvROK (cb)
2017 || SvTYPE (SvRV (cb)) != SVt_PVCV
2018 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2019 croak ("Coro::rouse_wait called with illegal callback argument,");
2020
2021 {
2022 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2023 SV *data = (SV *)GENSUB_ARG;
2024
2025 frame->data = (void *)data;
2026 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2027 frame->check = slf_check_rouse_wait;
2028 }
2029}
2030
2031static SV *
2032coro_new_rouse_cb (pTHX)
2033{
2034 HV *hv = (HV *)SvRV (coro_current);
2035 struct coro *coro = SvSTATE_hv (hv);
2036 SV *data = newRV_inc ((SV *)hv);
2037 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2038
2039 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2040 SvREFCNT_dec (data); /* magicext increases the refcount */
2041
2042 SvREFCNT_dec (coro->rouse_cb);
2043 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2044
2045 return cb;
2046}
2047
2048/*****************************************************************************/
2049/* schedule-like-function opcode (SLF) */
2050
2051static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2052static const CV *slf_cv;
2053static SV **slf_argv;
2054static int slf_argc, slf_arga; /* count, allocated */
2055static I32 slf_ax; /* top of stack, for restore */
2056
2057/* this restores the stack in the case we patched the entersub, to */
2058/* recreate the stack frame as perl will on following calls */
2059/* since entersub cleared the stack */
2060static OP *
2061pp_restore (pTHX)
2062{
2063 int i;
2064 SV **SP = PL_stack_base + slf_ax;
2065
2066 PUSHMARK (SP);
2067
2068 EXTEND (SP, slf_argc + 1);
2069
2070 for (i = 0; i < slf_argc; ++i)
2071 PUSHs (sv_2mortal (slf_argv [i]));
2072
2073 PUSHs ((SV *)CvGV (slf_cv));
2074
2075 RETURNOP (slf_restore.op_first);
2076}
2077
2078static void
2079slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2080{
2081 SV **arg = (SV **)slf_frame.data;
2082
2083 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2084}
2085
2086static void
2087slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2088{
2089 if (items != 2)
2090 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2091
2092 frame->prepare = slf_prepare_transfer;
2093 frame->check = slf_check_nop;
2094 frame->data = (void *)arg; /* let's hope it will stay valid */
2095}
2096
2097static void
2098slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2099{
2100 frame->prepare = prepare_schedule;
2101 frame->check = slf_check_nop;
2102}
2103
2104static void
2105slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2106{
2107 struct coro *next = (struct coro *)slf_frame.data;
2108
2109 SvREFCNT_inc_NN (next->hv);
2110 prepare_schedule_to (aTHX_ ta, next);
2111}
2112
2113static void
2114slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 if (!items)
2117 croak ("Coro::schedule_to expects a coroutine argument, caught");
2118
2119 frame->data = (void *)SvSTATE (arg [0]);
2120 frame->prepare = slf_prepare_schedule_to;
2121 frame->check = slf_check_nop;
2122}
2123
2124static void
2125slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 api_ready (aTHX_ SvRV (coro_current));
2128
2129 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2130}
2131
2132static void
2133slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 frame->prepare = prepare_cede;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede_notself;
2143 frame->check = slf_check_nop;
2144}
2145
2146/*
2147 * these not obviously related functions are all rolled into one
2148 * function to increase chances that they all will call transfer with the same
2149 * stack offset
2150 * SLF stands for "schedule-like-function".
2151 */
2152static OP *
2153pp_slf (pTHX)
2154{
2155 I32 checkmark; /* mark SP to see how many elements check has pushed */
2156
2157 /* set up the slf frame, unless it has already been set-up */
2158 /* the latter happens when a new coro has been started */
2159 /* or when a new cctx was attached to an existing coroutine */
2160 if (expect_true (!slf_frame.prepare))
2161 {
2162 /* first iteration */
2163 dSP;
2164 SV **arg = PL_stack_base + TOPMARK + 1;
2165 int items = SP - arg; /* args without function object */
2166 SV *gv = *sp;
2167
2168 /* do a quick consistency check on the "function" object, and if it isn't */
2169 /* for us, divert to the real entersub */
2170 if (SvTYPE (gv) != SVt_PVGV
2171 || !GvCV (gv)
2172 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2173 return PL_ppaddr[OP_ENTERSUB](aTHX);
2174
2175 if (!(PL_op->op_flags & OPf_STACKED))
2176 {
2177 /* ampersand-form of call, use @_ instead of stack */
2178 AV *av = GvAV (PL_defgv);
2179 arg = AvARRAY (av);
2180 items = AvFILLp (av) + 1;
2181 }
2182
2183 /* now call the init function, which needs to set up slf_frame */
2184 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2185 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2186
2187 /* pop args */
2188 SP = PL_stack_base + POPMARK;
2189
2190 PUTBACK;
2191 }
2192
2193 /* now that we have a slf_frame, interpret it! */
2194 /* we use a callback system not to make the code needlessly */
2195 /* complicated, but so we can run multiple perl coros from one cctx */
2196
2197 do
2198 {
2199 struct coro_transfer_args ta;
2200
2201 slf_frame.prepare (aTHX_ &ta);
2202 TRANSFER (ta, 0);
2203
2204 checkmark = PL_stack_sp - PL_stack_base;
2205 }
2206 while (slf_frame.check (aTHX_ &slf_frame));
2207
2208 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2209
2210 /* exception handling */
2211 if (expect_false (CORO_THROW))
2212 {
2213 SV *exception = sv_2mortal (CORO_THROW);
2214
2215 CORO_THROW = 0;
2216 sv_setsv (ERRSV, exception);
2217 croak (0);
2218 }
2219
2220 /* return value handling - mostly like entersub */
2221 /* make sure we put something on the stack in scalar context */
2222 if (GIMME_V == G_SCALAR)
2223 {
2224 dSP;
2225 SV **bot = PL_stack_base + checkmark;
2226
2227 if (sp == bot) /* too few, push undef */
2228 bot [1] = &PL_sv_undef;
2229 else if (sp != bot + 1) /* too many, take last one */
2230 bot [1] = *sp;
2231
2232 SP = bot + 1;
2233
2234 PUTBACK;
2235 }
2236
2237 return NORMAL;
2238}
2239
2240static void
2241api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2242{
2243 int i;
2244 SV **arg = PL_stack_base + ax;
2245 int items = PL_stack_sp - arg + 1;
2246
2247 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2248
2249 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2250 && PL_op->op_ppaddr != pp_slf)
2251 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2252
2253 CvFLAGS (cv) |= CVf_SLF;
2254 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2255 slf_cv = cv;
2256
2257 /* we patch the op, and then re-run the whole call */
2258 /* we have to put the same argument on the stack for this to work */
2259 /* and this will be done by pp_restore */
2260 slf_restore.op_next = (OP *)&slf_restore;
2261 slf_restore.op_type = OP_CUSTOM;
2262 slf_restore.op_ppaddr = pp_restore;
2263 slf_restore.op_first = PL_op;
2264
2265 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2266
2267 if (PL_op->op_flags & OPf_STACKED)
2268 {
2269 if (items > slf_arga)
2270 {
2271 slf_arga = items;
2272 free (slf_argv);
2273 slf_argv = malloc (slf_arga * sizeof (SV *));
2274 }
2275
2276 slf_argc = items;
2277
2278 for (i = 0; i < items; ++i)
2279 slf_argv [i] = SvREFCNT_inc (arg [i]);
2280 }
2281 else
2282 slf_argc = 0;
2283
2284 PL_op->op_ppaddr = pp_slf;
2285 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2286
2287 PL_op = (OP *)&slf_restore;
2288}
2289
2290/*****************************************************************************/
2291/* PerlIO::cede */
2292
2293typedef struct
2294{
2295 PerlIOBuf base;
2296 NV next, every;
2297} PerlIOCede;
2298
2299static IV
2300PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2301{
2302 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2303
2304 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2305 self->next = nvtime () + self->every;
2306
2307 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2308}
2309
2310static SV *
2311PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2312{
2313 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2314
2315 return newSVnv (self->every);
2316}
2317
2318static IV
2319PerlIOCede_flush (pTHX_ PerlIO *f)
2320{
2321 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2322 double now = nvtime ();
2323
2324 if (now >= self->next)
2325 {
2326 api_cede (aTHX);
2327 self->next = now + self->every;
2328 }
2329
2330 return PerlIOBuf_flush (aTHX_ f);
2331}
2332
2333static PerlIO_funcs PerlIO_cede =
2334{
2335 sizeof(PerlIO_funcs),
2336 "cede",
2337 sizeof(PerlIOCede),
2338 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2339 PerlIOCede_pushed,
2340 PerlIOBuf_popped,
2341 PerlIOBuf_open,
2342 PerlIOBase_binmode,
2343 PerlIOCede_getarg,
2344 PerlIOBase_fileno,
2345 PerlIOBuf_dup,
2346 PerlIOBuf_read,
2347 PerlIOBuf_unread,
2348 PerlIOBuf_write,
2349 PerlIOBuf_seek,
2350 PerlIOBuf_tell,
2351 PerlIOBuf_close,
2352 PerlIOCede_flush,
2353 PerlIOBuf_fill,
2354 PerlIOBase_eof,
2355 PerlIOBase_error,
2356 PerlIOBase_clearerr,
2357 PerlIOBase_setlinebuf,
2358 PerlIOBuf_get_base,
2359 PerlIOBuf_bufsiz,
2360 PerlIOBuf_get_ptr,
2361 PerlIOBuf_get_cnt,
2362 PerlIOBuf_set_ptrcnt,
2363};
2364
2365/*****************************************************************************/
2366/* Coro::Semaphore & Coro::Signal */
2367
2368static SV *
2369coro_waitarray_new (pTHX_ int count)
2370{
2371 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2372 AV *av = newAV ();
2373 SV **ary;
2374
2375 /* unfortunately, building manually saves memory */
2376 Newx (ary, 2, SV *);
2377 AvALLOC (av) = ary;
2378#if PERL_VERSION_ATLEAST (5,10,0)
2379 AvARRAY (av) = ary;
2380#else
2381 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2382 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2383 SvPVX ((SV *)av) = (char *)ary;
2384#endif
2385 AvMAX (av) = 1;
2386 AvFILLp (av) = 0;
2387 ary [0] = newSViv (count);
2388
2389 return newRV_noinc ((SV *)av);
2390}
2391
2392/* semaphore */
2393
2394static void
2395coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2396{
2397 SV *count_sv = AvARRAY (av)[0];
2398 IV count = SvIVX (count_sv);
2399
2400 count += adjust;
2401 SvIVX (count_sv) = count;
2402
2403 /* now wake up as many waiters as are expected to lock */
2404 while (count > 0 && AvFILLp (av) > 0)
2405 {
2406 SV *cb;
2407
2408 /* swap first two elements so we can shift a waiter */
2409 AvARRAY (av)[0] = AvARRAY (av)[1];
2410 AvARRAY (av)[1] = count_sv;
2411 cb = av_shift (av);
2412
2413 if (SvOBJECT (cb))
2414 {
2415 api_ready (aTHX_ cb);
2416 --count;
2417 }
2418 else if (SvTYPE (cb) == SVt_PVCV)
2419 {
2420 dSP;
2421 PUSHMARK (SP);
2422 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2423 PUTBACK;
2424 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2425 }
2426
2427 SvREFCNT_dec (cb);
2428 }
2429}
2430
2431static void
2432coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2433{
2434 /* call $sem->adjust (0) to possibly wake up some other waiters */
2435 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2436}
2437
2438static int
2439slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2440{
2441 AV *av = (AV *)frame->data;
2442 SV *count_sv = AvARRAY (av)[0];
2443
2444 /* if we are about to throw, don't actually acquire the lock, just throw */
2445 if (CORO_THROW)
2446 return 0;
2447 else if (SvIVX (count_sv) > 0)
2448 {
2449 SvSTATE_current->on_destroy = 0;
2450
2451 if (acquire)
2452 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2453 else
2454 coro_semaphore_adjust (aTHX_ av, 0);
2455
2456 return 0;
2457 }
2458 else
2459 {
2460 int i;
2461 /* if we were woken up but can't down, we look through the whole */
2462 /* waiters list and only add us if we aren't in there already */
2463 /* this avoids some degenerate memory usage cases */
2464
2465 for (i = 1; i <= AvFILLp (av); ++i)
2466 if (AvARRAY (av)[i] == SvRV (coro_current))
2467 return 1;
2468
2469 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2470 return 1;
2471 }
2472}
2473
2474static int
2475slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2476{
2477 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2478}
2479
2480static int
2481slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2482{
2483 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2484}
2485
2486static void
2487slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2488{
2489 AV *av = (AV *)SvRV (arg [0]);
2490
2491 if (SvIVX (AvARRAY (av)[0]) > 0)
2492 {
2493 frame->data = (void *)av;
2494 frame->prepare = prepare_nop;
2495 }
2496 else
2497 {
2498 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2499
2500 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2501 frame->prepare = prepare_schedule;
2502
2503 /* to avoid race conditions when a woken-up coro gets terminated */
2504 /* we arrange for a temporary on_destroy that calls adjust (0) */
2505 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2506 }
2507}
2508
2509static void
2510slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2511{
2512 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2513 frame->check = slf_check_semaphore_down;
2514}
2515
2516static void
2517slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 if (items >= 2)
2520 {
2521 /* callback form */
2522 AV *av = (AV *)SvRV (arg [0]);
2523 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2524
2525 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2526
2527 if (SvIVX (AvARRAY (av)[0]) > 0)
2528 coro_semaphore_adjust (aTHX_ av, 0);
2529
2530 frame->prepare = prepare_nop;
2531 frame->check = slf_check_nop;
2532 }
2533 else
2534 {
2535 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2536 frame->check = slf_check_semaphore_wait;
2537 }
2538}
2539
2540/* signal */
2541
2542static void
2543coro_signal_wake (pTHX_ AV *av, int count)
2544{
2545 SvIVX (AvARRAY (av)[0]) = 0;
2546
2547 /* now signal count waiters */
2548 while (count > 0 && AvFILLp (av) > 0)
2549 {
2550 SV *cb;
2551
2552 /* swap first two elements so we can shift a waiter */
2553 cb = AvARRAY (av)[0];
2554 AvARRAY (av)[0] = AvARRAY (av)[1];
2555 AvARRAY (av)[1] = cb;
2556
2557 cb = av_shift (av);
2558
2559 api_ready (aTHX_ cb);
2560 sv_setiv (cb, 0); /* signal waiter */
2561 SvREFCNT_dec (cb);
2562
2563 --count;
2564 }
2565}
2566
2567static int
2568slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2569{
2570 /* if we are about to throw, also stop waiting */
2571 return SvROK ((SV *)frame->data) && !CORO_THROW;
2572}
2573
2574static void
2575slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 AV *av = (AV *)SvRV (arg [0]);
2578
2579 if (SvIVX (AvARRAY (av)[0]))
2580 {
2581 SvIVX (AvARRAY (av)[0]) = 0;
2582 frame->prepare = prepare_nop;
2583 frame->check = slf_check_nop;
2584 }
2585 else
2586 {
2587 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2588
2589 av_push (av, waiter);
2590
2591 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2592 frame->prepare = prepare_schedule;
2593 frame->check = slf_check_signal_wait;
2594 }
2595}
2596
2597/*****************************************************************************/
2598/* Coro::AIO */
2599
2600#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2601
2602/* helper storage struct */
2603struct io_state
2604{
2605 int errorno;
2606 I32 laststype; /* U16 in 5.10.0 */
2607 int laststatval;
2608 Stat_t statcache;
2609};
2610
2611static void
2612coro_aio_callback (pTHX_ CV *cv)
2613{
2614 dXSARGS;
2615 AV *state = (AV *)GENSUB_ARG;
2616 SV *coro = av_pop (state);
2617 SV *data_sv = newSV (sizeof (struct io_state));
2618
2619 av_extend (state, items - 1);
2620
2621 sv_upgrade (data_sv, SVt_PV);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624
2625 {
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627
2628 data->errorno = errno;
2629 data->laststype = PL_laststype;
2630 data->laststatval = PL_laststatval;
2631 data->statcache = PL_statcache;
2632 }
2633
2634 /* now build the result vector out of all the parameters and the data_sv */
2635 {
2636 int i;
2637
2638 for (i = 0; i < items; ++i)
2639 av_push (state, SvREFCNT_inc_NN (ST (i)));
2640 }
2641
2642 av_push (state, data_sv);
2643
2644 api_ready (aTHX_ coro);
2645 SvREFCNT_dec (coro);
2646 SvREFCNT_dec ((AV *)state);
2647}
2648
2649static int
2650slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2651{
2652 AV *state = (AV *)frame->data;
2653
2654 /* if we are about to throw, return early */
2655 /* this does not cancel the aio request, but at least */
2656 /* it quickly returns */
2657 if (CORO_THROW)
2658 return 0;
2659
2660 /* one element that is an RV? repeat! */
2661 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2662 return 1;
2663
2664 /* restore status */
2665 {
2666 SV *data_sv = av_pop (state);
2667 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2668
2669 errno = data->errorno;
2670 PL_laststype = data->laststype;
2671 PL_laststatval = data->laststatval;
2672 PL_statcache = data->statcache;
2673
2674 SvREFCNT_dec (data_sv);
2675 }
2676
2677 /* push result values */
2678 {
2679 dSP;
2680 int i;
2681
2682 EXTEND (SP, AvFILLp (state) + 1);
2683 for (i = 0; i <= AvFILLp (state); ++i)
2684 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2685
2686 PUTBACK;
2687 }
2688
2689 return 0;
2690}
2691
2692static void
2693slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2694{
2695 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2696 SV *coro_hv = SvRV (coro_current);
2697 struct coro *coro = SvSTATE_hv (coro_hv);
2698
2699 /* put our coroutine id on the state arg */
2700 av_push (state, SvREFCNT_inc_NN (coro_hv));
2701
2702 /* first see whether we have a non-zero priority and set it as AIO prio */
2703 if (coro->prio)
2704 {
2705 dSP;
2706
2707 static SV *prio_cv;
2708 static SV *prio_sv;
2709
2710 if (expect_false (!prio_cv))
2711 {
2712 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2713 prio_sv = newSViv (0);
2714 }
2715
2716 PUSHMARK (SP);
2717 sv_setiv (prio_sv, coro->prio);
2718 XPUSHs (prio_sv);
2719
2720 PUTBACK;
2721 call_sv (prio_cv, G_VOID | G_DISCARD);
2722 }
2723
2724 /* now call the original request */
2725 {
2726 dSP;
2727 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2728 int i;
2729
2730 PUSHMARK (SP);
2731
2732 /* first push all args to the stack */
2733 EXTEND (SP, items + 1);
2734
2735 for (i = 0; i < items; ++i)
2736 PUSHs (arg [i]);
2737
2738 /* now push the callback closure */
2739 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2740
2741 /* now call the AIO function - we assume our request is uncancelable */
2742 PUTBACK;
2743 call_sv ((SV *)req, G_VOID | G_DISCARD);
2744 }
2745
2746 /* now that the requets is going, we loop toll we have a result */
2747 frame->data = (void *)state;
2748 frame->prepare = prepare_schedule;
2749 frame->check = slf_check_aio_req;
2750}
2751
2752static void
2753coro_aio_req_xs (pTHX_ CV *cv)
2754{
2755 dXSARGS;
2756
2757 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2758
2759 XSRETURN_EMPTY;
2760}
2761
2762/*****************************************************************************/
2763
2764#if CORO_CLONE
2765# include "clone.c"
2766#endif
2767
1629MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2768MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1630 2769
1631PROTOTYPES: DISABLE 2770PROTOTYPES: DISABLE
1632 2771
1633BOOT: 2772BOOT:
1634{ 2773{
1635#ifdef USE_ITHREADS 2774#ifdef USE_ITHREADS
1636 MUTEX_INIT (&coro_mutex); 2775# if CORO_PTHREAD
2776 coro_thx = PERL_GET_CONTEXT;
2777# endif
1637#endif 2778#endif
1638 BOOT_PAGESIZE; 2779 BOOT_PAGESIZE;
2780
2781 cctx_current = cctx_new_empty ();
1639 2782
1640 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2783 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1641 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2784 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1642 2785
1643 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2786 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1659 main_top_env = PL_top_env; 2802 main_top_env = PL_top_env;
1660 2803
1661 while (main_top_env->je_prev) 2804 while (main_top_env->je_prev)
1662 main_top_env = main_top_env->je_prev; 2805 main_top_env = main_top_env->je_prev;
1663 2806
2807 {
2808 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2809
2810 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2811 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2812
2813 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2814 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2815 }
2816
1664 coroapi.ver = CORO_API_VERSION; 2817 coroapi.ver = CORO_API_VERSION;
1665 coroapi.rev = CORO_API_REVISION; 2818 coroapi.rev = CORO_API_REVISION;
2819
1666 coroapi.transfer = api_transfer; 2820 coroapi.transfer = api_transfer;
2821
2822 coroapi.sv_state = SvSTATE_;
2823 coroapi.execute_slf = api_execute_slf;
2824 coroapi.prepare_nop = prepare_nop;
2825 coroapi.prepare_schedule = prepare_schedule;
2826 coroapi.prepare_cede = prepare_cede;
2827 coroapi.prepare_cede_notself = prepare_cede_notself;
2828
2829 {
2830 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2831
2832 if (!svp) croak ("Time::HiRes is required");
2833 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2834
2835 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2836 }
1667 2837
1668 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2838 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1669} 2839}
1670 2840
1671SV * 2841SV *
1672new (char *klass, ...) 2842new (char *klass, ...)
2843 ALIAS:
2844 Coro::new = 1
1673 CODE: 2845 CODE:
1674{ 2846{
1675 struct coro *coro; 2847 struct coro *coro;
1676 MAGIC *mg; 2848 MAGIC *mg;
1677 HV *hv; 2849 HV *hv;
2850 CV *cb;
1678 int i; 2851 int i;
2852
2853 if (items > 1)
2854 {
2855 cb = coro_sv_2cv (aTHX_ ST (1));
2856
2857 if (!ix)
2858 {
2859 if (CvISXSUB (cb))
2860 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2861
2862 if (!CvROOT (cb))
2863 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2864 }
2865 }
1679 2866
1680 Newz (0, coro, 1, struct coro); 2867 Newz (0, coro, 1, struct coro);
1681 coro->args = newAV (); 2868 coro->args = newAV ();
1682 coro->flags = CF_NEW; 2869 coro->flags = CF_NEW;
1683 2870
… …
1688 coro->hv = hv = newHV (); 2875 coro->hv = hv = newHV ();
1689 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2876 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1690 mg->mg_flags |= MGf_DUP; 2877 mg->mg_flags |= MGf_DUP;
1691 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2878 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1692 2879
2880 if (items > 1)
2881 {
1693 av_extend (coro->args, items - 1); 2882 av_extend (coro->args, items - 1 + ix - 1);
2883
2884 if (ix)
2885 {
2886 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2887 cb = cv_coro_run;
2888 }
2889
2890 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2891
1694 for (i = 1; i < items; i++) 2892 for (i = 2; i < items; i++)
1695 av_push (coro->args, newSVsv (ST (i))); 2893 av_push (coro->args, newSVsv (ST (i)));
2894 }
1696} 2895}
1697 OUTPUT: 2896 OUTPUT:
1698 RETVAL 2897 RETVAL
1699 2898
1700# these not obviously related functions are all rolled into the same xs
1701# function to increase chances that they all will call transfer with the same
1702# stack offset
1703void 2899void
1704_set_stacklevel (...) 2900transfer (...)
1705 ALIAS: 2901 PROTOTYPE: $$
1706 Coro::State::transfer = 1 2902 CODE:
1707 Coro::schedule = 2 2903 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1708 Coro::cede = 3
1709 Coro::cede_notself = 4
1710 CODE:
1711{
1712 struct transfer_args ta;
1713
1714 PUTBACK;
1715 switch (ix)
1716 {
1717 case 0:
1718 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1719 ta.next = 0;
1720 break;
1721
1722 case 1:
1723 if (items != 2)
1724 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1725
1726 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1727 break;
1728
1729 case 2:
1730 prepare_schedule (aTHX_ &ta);
1731 break;
1732
1733 case 3:
1734 prepare_cede (aTHX_ &ta);
1735 break;
1736
1737 case 4:
1738 if (!prepare_cede_notself (aTHX_ &ta))
1739 XSRETURN_EMPTY;
1740
1741 break;
1742 }
1743 SPAGAIN;
1744
1745 BARRIER;
1746 PUTBACK;
1747 TRANSFER (ta, 0);
1748 SPAGAIN; /* might be the sp of a different coroutine now */
1749 /* be extra careful not to ever do anything after TRANSFER */
1750}
1751 2904
1752bool 2905bool
1753_destroy (SV *coro_sv) 2906_destroy (SV *coro_sv)
1754 CODE: 2907 CODE:
1755 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1760_exit (int code) 2913_exit (int code)
1761 PROTOTYPE: $ 2914 PROTOTYPE: $
1762 CODE: 2915 CODE:
1763 _exit (code); 2916 _exit (code);
1764 2917
2918SV *
2919clone (Coro::State coro)
2920 CODE:
2921{
2922#if CORO_CLONE
2923 struct coro *ncoro = coro_clone (coro);
2924 MAGIC *mg;
2925 /* TODO: too much duplication */
2926 ncoro->hv = newHV ();
2927 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2928 mg->mg_flags |= MGf_DUP;
2929 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2930#else
2931 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2932#endif
2933}
2934 OUTPUT:
2935 RETVAL
2936
1765int 2937int
1766cctx_stacksize (int new_stacksize = 0) 2938cctx_stacksize (int new_stacksize = 0)
2939 PROTOTYPE: ;$
1767 CODE: 2940 CODE:
1768 RETVAL = coro_stacksize; 2941 RETVAL = cctx_stacksize;
1769 if (new_stacksize) 2942 if (new_stacksize)
2943 {
1770 coro_stacksize = new_stacksize; 2944 cctx_stacksize = new_stacksize;
2945 ++cctx_gen;
2946 }
1771 OUTPUT: 2947 OUTPUT:
1772 RETVAL 2948 RETVAL
1773 2949
1774int 2950int
2951cctx_max_idle (int max_idle = 0)
2952 PROTOTYPE: ;$
2953 CODE:
2954 RETVAL = cctx_max_idle;
2955 if (max_idle > 1)
2956 cctx_max_idle = max_idle;
2957 OUTPUT:
2958 RETVAL
2959
2960int
1775cctx_count () 2961cctx_count ()
2962 PROTOTYPE:
1776 CODE: 2963 CODE:
1777 RETVAL = cctx_count; 2964 RETVAL = cctx_count;
1778 OUTPUT: 2965 OUTPUT:
1779 RETVAL 2966 RETVAL
1780 2967
1781int 2968int
1782cctx_idle () 2969cctx_idle ()
2970 PROTOTYPE:
1783 CODE: 2971 CODE:
1784 RETVAL = cctx_idle; 2972 RETVAL = cctx_idle;
1785 OUTPUT: 2973 OUTPUT:
1786 RETVAL 2974 RETVAL
1787 2975
1788void 2976void
1789list () 2977list ()
2978 PROTOTYPE:
1790 PPCODE: 2979 PPCODE:
1791{ 2980{
1792 struct coro *coro; 2981 struct coro *coro;
1793 for (coro = coro_first; coro; coro = coro->next) 2982 for (coro = coro_first; coro; coro = coro->next)
1794 if (coro->hv) 2983 if (coro->hv)
… …
1799call (Coro::State coro, SV *coderef) 2988call (Coro::State coro, SV *coderef)
1800 ALIAS: 2989 ALIAS:
1801 eval = 1 2990 eval = 1
1802 CODE: 2991 CODE:
1803{ 2992{
1804 if (coro->mainstack) 2993 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1805 { 2994 {
1806 struct coro temp; 2995 struct coro temp;
1807 2996
1808 if (!(coro->flags & CF_RUNNING)) 2997 if (!(coro->flags & CF_RUNNING))
1809 { 2998 {
… …
1853 RETVAL = boolSV (coro->flags & ix); 3042 RETVAL = boolSV (coro->flags & ix);
1854 OUTPUT: 3043 OUTPUT:
1855 RETVAL 3044 RETVAL
1856 3045
1857void 3046void
3047throw (Coro::State self, SV *throw = &PL_sv_undef)
3048 PROTOTYPE: $;$
3049 CODE:
3050{
3051 struct coro *current = SvSTATE_current;
3052 SV **throwp = self == current ? &CORO_THROW : &self->except;
3053 SvREFCNT_dec (*throwp);
3054 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3055}
3056
3057void
1858api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3058api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3059 PROTOTYPE: $;$
3060 C_ARGS: aTHX_ coro, flags
1859 3061
1860SV * 3062SV *
1861has_cctx (Coro::State coro) 3063has_cctx (Coro::State coro)
1862 PROTOTYPE: $ 3064 PROTOTYPE: $
1863 CODE: 3065 CODE:
1864 RETVAL = boolSV (!!coro->cctx); 3066 /* maybe manage the running flag differently */
3067 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1865 OUTPUT: 3068 OUTPUT:
1866 RETVAL 3069 RETVAL
1867 3070
1868int 3071int
1869is_traced (Coro::State coro) 3072is_traced (Coro::State coro)
… …
1871 CODE: 3074 CODE:
1872 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3075 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1873 OUTPUT: 3076 OUTPUT:
1874 RETVAL 3077 RETVAL
1875 3078
1876IV 3079UV
1877rss (Coro::State coro) 3080rss (Coro::State coro)
1878 PROTOTYPE: $ 3081 PROTOTYPE: $
1879 ALIAS: 3082 ALIAS:
1880 usecount = 1 3083 usecount = 1
1881 CODE: 3084 CODE:
… …
1887 OUTPUT: 3090 OUTPUT:
1888 RETVAL 3091 RETVAL
1889 3092
1890void 3093void
1891force_cctx () 3094force_cctx ()
3095 PROTOTYPE:
1892 CODE: 3096 CODE:
1893 struct coro *coro = SvSTATE (coro_current);
1894 coro->cctx->idle_sp = 0; 3097 cctx_current->idle_sp = 0;
3098
3099void
3100swap_defsv (Coro::State self)
3101 PROTOTYPE: $
3102 ALIAS:
3103 swap_defav = 1
3104 CODE:
3105 if (!self->slot)
3106 croak ("cannot swap state with coroutine that has no saved state,");
3107 else
3108 {
3109 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3110 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3111
3112 SV *tmp = *src; *src = *dst; *dst = tmp;
3113 }
3114
1895 3115
1896MODULE = Coro::State PACKAGE = Coro 3116MODULE = Coro::State PACKAGE = Coro
1897 3117
1898BOOT: 3118BOOT:
1899{ 3119{
1900 int i; 3120 int i;
1901 3121
1902 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1903 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3122 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1904 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3123 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1905 3124 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3125 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1906 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3126 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1907 SvREADONLY_on (coro_current); 3127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3128 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3129 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3130 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3131
3132 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3133 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3134 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3135 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1908 3136
1909 coro_stash = gv_stashpv ("Coro", TRUE); 3137 coro_stash = gv_stashpv ("Coro", TRUE);
1910 3138
1911 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3139 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1912 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3140 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1917 3145
1918 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3146 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1919 coro_ready[i] = newAV (); 3147 coro_ready[i] = newAV ();
1920 3148
1921 { 3149 {
1922 SV *sv = perl_get_sv ("Coro::API", TRUE); 3150 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1923 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1924 3151
1925 coroapi.schedule = api_schedule; 3152 coroapi.schedule = api_schedule;
3153 coroapi.schedule_to = api_schedule_to;
1926 coroapi.cede = api_cede; 3154 coroapi.cede = api_cede;
1927 coroapi.cede_notself = api_cede_notself; 3155 coroapi.cede_notself = api_cede_notself;
1928 coroapi.ready = api_ready; 3156 coroapi.ready = api_ready;
1929 coroapi.is_ready = api_is_ready; 3157 coroapi.is_ready = api_is_ready;
1930 coroapi.nready = &coro_nready; 3158 coroapi.nready = coro_nready;
1931 coroapi.current = coro_current; 3159 coroapi.current = coro_current;
1932 3160
1933 GCoroAPI = &coroapi; 3161 /*GCoroAPI = &coroapi;*/
1934 sv_setiv (sv, (IV)&coroapi); 3162 sv_setiv (sv, (IV)&coroapi);
1935 SvREADONLY_on (sv); 3163 SvREADONLY_on (sv);
1936 } 3164 }
1937} 3165}
3166
3167void
3168terminate (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3171
3172void
3173schedule (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3176
3177void
3178schedule_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3181
3182void
3183cede_to (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3186
3187void
3188cede (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_cede);
3191
3192void
3193cede_notself (...)
3194 CODE:
3195 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3196
3197void
3198_cancel (Coro::State self)
3199 CODE:
3200 coro_state_destroy (aTHX_ self);
3201 coro_call_on_destroy (aTHX_ self);
1938 3202
1939void 3203void
1940_set_current (SV *current) 3204_set_current (SV *current)
1941 PROTOTYPE: $ 3205 PROTOTYPE: $
1942 CODE: 3206 CODE:
1943 SvREFCNT_dec (SvRV (coro_current)); 3207 SvREFCNT_dec (SvRV (coro_current));
1944 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3208 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1945 3209
1946void 3210void
1947_set_readyhook (SV *hook) 3211_set_readyhook (SV *hook)
1948 PROTOTYPE: $ 3212 PROTOTYPE: $
1949 CODE: 3213 CODE:
1950 LOCK;
1951 SvREFCNT_dec (coro_readyhook); 3214 SvREFCNT_dec (coro_readyhook);
1952 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3215 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1953 UNLOCK;
1954 3216
1955int 3217int
1956prio (Coro::State coro, int newprio = 0) 3218prio (Coro::State coro, int newprio = 0)
3219 PROTOTYPE: $;$
1957 ALIAS: 3220 ALIAS:
1958 nice = 1 3221 nice = 1
1959 CODE: 3222 CODE:
1960{ 3223{
1961 RETVAL = coro->prio; 3224 RETVAL = coro->prio;
… …
1976 3239
1977SV * 3240SV *
1978ready (SV *self) 3241ready (SV *self)
1979 PROTOTYPE: $ 3242 PROTOTYPE: $
1980 CODE: 3243 CODE:
1981 RETVAL = boolSV (api_ready (self)); 3244 RETVAL = boolSV (api_ready (aTHX_ self));
1982 OUTPUT: 3245 OUTPUT:
1983 RETVAL 3246 RETVAL
1984 3247
1985int 3248int
1986nready (...) 3249nready (...)
… …
1989 RETVAL = coro_nready; 3252 RETVAL = coro_nready;
1990 OUTPUT: 3253 OUTPUT:
1991 RETVAL 3254 RETVAL
1992 3255
1993void 3256void
1994throw (Coro::State self, SV *throw = &PL_sv_undef) 3257_pool_handler (...)
3258 CODE:
3259 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3260
3261void
3262async_pool (SV *cv, ...)
1995 PROTOTYPE: $;$ 3263 PROTOTYPE: &@
3264 PPCODE:
3265{
3266 HV *hv = (HV *)av_pop (av_async_pool);
3267 AV *av = newAV ();
3268 SV *cb = ST (0);
3269 int i;
3270
3271 av_extend (av, items - 2);
3272 for (i = 1; i < items; ++i)
3273 av_push (av, SvREFCNT_inc_NN (ST (i)));
3274
3275 if ((SV *)hv == &PL_sv_undef)
3276 {
3277 PUSHMARK (SP);
3278 EXTEND (SP, 2);
3279 PUSHs (sv_Coro);
3280 PUSHs ((SV *)cv_pool_handler);
3281 PUTBACK;
3282 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3283 SPAGAIN;
3284
3285 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3286 }
3287
3288 {
3289 struct coro *coro = SvSTATE_hv (hv);
3290
3291 assert (!coro->invoke_cb);
3292 assert (!coro->invoke_av);
3293 coro->invoke_cb = SvREFCNT_inc (cb);
3294 coro->invoke_av = av;
3295 }
3296
3297 api_ready (aTHX_ (SV *)hv);
3298
3299 if (GIMME_V != G_VOID)
3300 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3301 else
3302 SvREFCNT_dec (hv);
3303}
3304
3305SV *
3306rouse_cb ()
3307 PROTOTYPE:
3308 CODE:
3309 RETVAL = coro_new_rouse_cb (aTHX);
3310 OUTPUT:
3311 RETVAL
3312
3313void
3314rouse_wait (...)
3315 PROTOTYPE: ;$
3316 PPCODE:
3317 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3318
3319
3320MODULE = Coro::State PACKAGE = PerlIO::cede
3321
3322BOOT:
3323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3324
3325
3326MODULE = Coro::State PACKAGE = Coro::Semaphore
3327
3328SV *
3329new (SV *klass, SV *count = 0)
3330 CODE:
3331 RETVAL = sv_bless (
3332 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3333 GvSTASH (CvGV (cv))
3334 );
3335 OUTPUT:
3336 RETVAL
3337
3338# helper for Coro::Channel
3339SV *
3340_alloc (int count)
3341 CODE:
3342 RETVAL = coro_waitarray_new (aTHX_ count);
3343 OUTPUT:
3344 RETVAL
3345
3346SV *
3347count (SV *self)
3348 CODE:
3349 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3350 OUTPUT:
3351 RETVAL
3352
3353void
3354up (SV *self, int adjust = 1)
3355 ALIAS:
3356 adjust = 1
1996 CODE: 3357 CODE:
1997 SvREFCNT_dec (self->throw); 3358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
1998 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1999 3359
2000void 3360void
2001swap_defsv (Coro::State self) 3361down (...)
2002 PROTOTYPE: $
2003 ALIAS:
2004 swap_defav = 1
2005 CODE: 3362 CODE:
2006 if (!self->slot) 3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2007 croak ("cannot swap state with coroutine that has no saved state"); 3364
3365void
3366wait (...)
3367 CODE:
3368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3369
3370void
3371try (SV *self)
3372 PPCODE:
3373{
3374 AV *av = (AV *)SvRV (self);
3375 SV *count_sv = AvARRAY (av)[0];
3376 IV count = SvIVX (count_sv);
3377
3378 if (count > 0)
3379 {
3380 --count;
3381 SvIVX (count_sv) = count;
3382 XSRETURN_YES;
3383 }
3384 else
3385 XSRETURN_NO;
3386}
3387
3388void
3389waiters (SV *self)
3390 PPCODE:
3391{
3392 AV *av = (AV *)SvRV (self);
3393 int wcount = AvFILLp (av) + 1 - 1;
3394
3395 if (GIMME_V == G_SCALAR)
3396 XPUSHs (sv_2mortal (newSViv (wcount)));
2008 else 3397 else
2009 { 3398 {
2010 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3399 int i;
2011 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3400 EXTEND (SP, wcount);
2012 3401 for (i = 1; i <= wcount; ++i)
2013 SV *tmp = *src; *src = *dst; *dst = tmp; 3402 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2014 } 3403 }
3404}
2015 3405
2016# for async_pool speedup 3406MODULE = Coro::State PACKAGE = Coro::Signal
3407
3408SV *
3409new (SV *klass)
3410 CODE:
3411 RETVAL = sv_bless (
3412 coro_waitarray_new (aTHX_ 0),
3413 GvSTASH (CvGV (cv))
3414 );
3415 OUTPUT:
3416 RETVAL
3417
2017void 3418void
2018_pool_1 (SV *cb) 3419wait (...)
2019 CODE: 3420 CODE:
2020{ 3421 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
2021 struct coro *coro = SvSTATE (coro_current);
2022 HV *hv = (HV *)SvRV (coro_current);
2023 AV *defav = GvAV (PL_defgv);
2024 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2025 AV *invoke_av;
2026 int i, len;
2027
2028 if (!invoke)
2029 {
2030 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2031 croak ("\3async_pool terminate\2\n");
2032 }
2033
2034 SvREFCNT_dec (coro->saved_deffh);
2035 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2036
2037 hv_store (hv, "desc", sizeof ("desc") - 1,
2038 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2039
2040 invoke_av = (AV *)SvRV (invoke);
2041 len = av_len (invoke_av);
2042
2043 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2044
2045 if (len > 0)
2046 {
2047 av_fill (defav, len - 1);
2048 for (i = 0; i < len; ++i)
2049 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2050 }
2051
2052 SvREFCNT_dec (invoke);
2053}
2054 3422
2055void 3423void
2056_pool_2 (SV *cb) 3424broadcast (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428 coro_signal_wake (aTHX_ av, AvFILLp (av));
3429}
3430
3431void
3432send (SV *self)
3433 CODE:
3434{
3435 AV *av = (AV *)SvRV (self);
3436
3437 if (AvFILLp (av))
3438 coro_signal_wake (aTHX_ av, 1);
3439 else
3440 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3441}
3442
3443IV
3444awaited (SV *self)
2057 CODE: 3445 CODE:
2058{ 3446 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
2059 struct coro *coro = SvSTATE (coro_current);
2060
2061 sv_setsv (cb, &PL_sv_undef);
2062
2063 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2064 coro->saved_deffh = 0;
2065
2066 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2067 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2068 {
2069 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
2070 croak ("\3async_pool terminate\2\n");
2071 }
2072
2073 av_clear (GvAV (PL_defgv));
2074 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2075 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2076
2077 coro->prio = 0;
2078
2079 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2080 api_trace (coro_current, 0);
2081
2082 av_push (av_async_pool, newSVsv (coro_current));
2083}
2084
2085
2086MODULE = Coro::State PACKAGE = Coro::AIO
2087
2088SV *
2089_get_state ()
2090 CODE:
2091{
2092 struct io_state *data;
2093
2094 RETVAL = newSV (sizeof (struct io_state));
2095 data = (struct io_state *)SvPVX (RETVAL);
2096 SvCUR_set (RETVAL, sizeof (struct io_state));
2097 SvPOK_only (RETVAL);
2098
2099 data->errorno = errno;
2100 data->laststype = PL_laststype;
2101 data->laststatval = PL_laststatval;
2102 data->statcache = PL_statcache;
2103}
2104 OUTPUT: 3447 OUTPUT:
2105 RETVAL 3448 RETVAL
2106 3449
2107void
2108_set_state (char *data_)
2109 PROTOTYPE: $
2110 CODE:
2111{
2112 struct io_state *data = (void *)data_;
2113
2114 errno = data->errorno;
2115 PL_laststype = data->laststype;
2116 PL_laststatval = data->laststatval;
2117 PL_statcache = data->statcache;
2118}
2119
2120 3450
2121MODULE = Coro::State PACKAGE = Coro::AnyEvent 3451MODULE = Coro::State PACKAGE = Coro::AnyEvent
2122 3452
2123BOOT: 3453BOOT:
2124 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3454 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2125 3455
2126SV * 3456void
2127_schedule (...) 3457_schedule (...)
2128 PROTOTYPE: @
2129 CODE: 3458 CODE:
2130{ 3459{
2131 static int incede; 3460 static int incede;
2132 3461
2133 api_cede_notself (); 3462 api_cede_notself (aTHX);
2134 3463
2135 ++incede; 3464 ++incede;
2136 while (coro_nready >= incede && api_cede ()) 3465 while (coro_nready >= incede && api_cede (aTHX))
2137 ; 3466 ;
2138 3467
2139 sv_setsv (sv_activity, &PL_sv_undef); 3468 sv_setsv (sv_activity, &PL_sv_undef);
2140 if (coro_nready >= incede) 3469 if (coro_nready >= incede)
2141 { 3470 {
2142 PUSHMARK (SP); 3471 PUSHMARK (SP);
2143 PUTBACK; 3472 PUTBACK;
2144 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3473 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2145 SPAGAIN;
2146 } 3474 }
2147 3475
2148 --incede; 3476 --incede;
2149} 3477}
2150 3478
3479
3480MODULE = Coro::State PACKAGE = Coro::AIO
3481
3482void
3483_register (char *target, char *proto, SV *req)
3484 CODE:
3485{
3486 CV *req_cv = coro_sv_2cv (aTHX_ req);
3487 /* newXSproto doesn't return the CV on 5.8 */
3488 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3489 sv_setpv ((SV *)slf_cv, proto);
3490 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3491}
3492

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