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Comparing Coro/Coro/State.xs (file contents):
Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 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
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93 100#ifndef CvISXSUB_on
94/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
95#ifndef CxHASARGS 102#endif
96# 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)
97#endif 108#endif
98 109
99/* 5.8.7 */ 110/* 5.8.7 */
100#ifndef SvRV_set 111#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
… …
114# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif 126#endif
116 127
117/* 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
118 * 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
119#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
120#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
121 137
122#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
123 139
124#if __GNUC__ >= 3 140#if __GNUC__ >= 3
125# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
128#else 144#else
129# define attribute(x) 145# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
132#endif 148#endif
133 149
134#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
136 152
137#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
138 154
139#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
140 157
141#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
142static perl_mutex coro_mutex; 159# if CORO_PTHREAD
143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
145#else
146# define LOCK (void)0
147# define UNLOCK (void)0
148#endif 161# endif
149 162#endif
150/* helper storage struct for Coro::AIO */
151struct io_state
152{
153 AV *res;
154 int errorno;
155 I32 laststype;
156 int laststatval;
157 Stat_t statcache;
158};
159 163
160static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
161 165
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;
162static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 174static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
167static 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 */
168 181
169static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 184static SV *rv_diehook;
172static SV *rv_warnhook; 185static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
174 187
175/* async_pool helper stuff */ 188/* async_pool helper stuff */
176static SV *sv_pool_rss; 189static SV *sv_pool_rss;
177static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
178static 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;
179 196
180/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
181static SV *sv_activity; 198static SV *sv_activity;
182 199
183static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
193}; 210};
194 211
195/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
196typedef struct coro_cctx { 213typedef struct coro_cctx
214{
197 struct coro_cctx *next; 215 struct coro_cctx *next;
198 216
199 /* the stack */ 217 /* the stack */
200 void *sptr; 218 void *sptr;
201 size_t ssize; 219 size_t ssize;
… …
204 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
205 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 */
206 JMPENV *top_env; 224 JMPENV *top_env;
207 coro_context cctx; 225 coro_context cctx;
208 226
227 U32 gen;
209#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
210 int valgrind_id; 229 int valgrind_id;
211#endif 230#endif
212 unsigned char flags; 231 unsigned char flags;
213} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
214 237
215enum { 238enum {
216 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
217 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
218 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
219 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
220}; 243};
221 244
222/* 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 */
223typedef struct { 246typedef struct
247{
224 SV *defsv; 248 SV *defsv;
225 AV *defav; 249 AV *defav;
226 SV *errsv; 250 SV *errsv;
227 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
228#define VAR(name,type) type name; 253#define VAR(name,type) type name;
229# include "state.h" 254# include "state.h"
230#undef VAR 255#undef VAR
231} perl_slots; 256} perl_slots;
232 257
233#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))
234 259
235/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
236struct coro { 261struct coro {
237 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
238 coro_cctx *cctx; 263 coro_cctx *cctx;
239 264
240 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 267 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
243 269
270 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
247 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);
248 276
249 /* statistics */ 277 /* statistics */
250 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
251 279
252 /* coro process data */ 280 /* coro process data */
253 int prio; 281 int prio;
254 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
255 284
256 /* async_pool */ 285 /* async_pool */
257 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* on_enter/on_leave */
291 AV *on_enter;
292 AV *on_leave;
258 293
259 /* linked list */ 294 /* linked list */
260 struct coro *next, *prev; 295 struct coro *next, *prev;
261}; 296};
262 297
263typedef struct coro *Coro__State; 298typedef struct coro *Coro__State;
264typedef struct coro *Coro__State_or_hashref; 299typedef struct coro *Coro__State_or_hashref;
300
301/* the following variables are effectively part of the perl context */
302/* and get copied between struct coro and these variables */
303/* the mainr easonw e don't support windows process emulation */
304static struct CoroSLF slf_frame; /* the current slf frame */
265 305
266/** Coro ********************************************************************/ 306/** Coro ********************************************************************/
267 307
268#define PRIO_MAX 3 308#define PRIO_MAX 3
269#define PRIO_HIGH 1 309#define PRIO_HIGH 1
… …
273#define PRIO_MIN -4 313#define PRIO_MIN -4
274 314
275/* for Coro.pm */ 315/* for Coro.pm */
276static SV *coro_current; 316static SV *coro_current;
277static SV *coro_readyhook; 317static SV *coro_readyhook;
278static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 318static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
279static int coro_nready; 319static CV *cv_coro_run, *cv_coro_terminate;
280static struct coro *coro_first; 320static struct coro *coro_first;
321#define coro_nready coroapi.nready
281 322
282/** lowlevel stuff **********************************************************/ 323/** lowlevel stuff **********************************************************/
283 324
284static SV * 325static SV *
285coro_get_sv (pTHX_ const char *name, int create) 326coro_get_sv (pTHX_ const char *name, int create)
… …
309 get_hv (name, create); 350 get_hv (name, create);
310#endif 351#endif
311 return get_hv (name, create); 352 return get_hv (name, create);
312} 353}
313 354
355/* may croak */
356INLINE CV *
357coro_sv_2cv (pTHX_ SV *sv)
358{
359 HV *st;
360 GV *gvp;
361 CV *cv = sv_2cv (sv, &st, &gvp, 0);
362
363 if (!cv)
364 croak ("code reference expected");
365
366 return cv;
367}
368
369/*****************************************************************************/
370/* magic glue */
371
372#define CORO_MAGIC_type_cv 26
373#define CORO_MAGIC_type_state PERL_MAGIC_ext
374
375#define CORO_MAGIC_NN(sv, type) \
376 (expect_true (SvMAGIC (sv)->mg_type == type) \
377 ? SvMAGIC (sv) \
378 : mg_find (sv, type))
379
380#define CORO_MAGIC(sv, type) \
381 (expect_true (SvMAGIC (sv)) \
382 ? CORO_MAGIC_NN (sv, type) \
383 : 0)
384
385#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
386#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
387
388INLINE struct coro *
389SvSTATE_ (pTHX_ SV *coro)
390{
391 HV *stash;
392 MAGIC *mg;
393
394 if (SvROK (coro))
395 coro = SvRV (coro);
396
397 if (expect_false (SvTYPE (coro) != SVt_PVHV))
398 croak ("Coro::State object required");
399
400 stash = SvSTASH (coro);
401 if (expect_false (stash != coro_stash && stash != coro_state_stash))
402 {
403 /* very slow, but rare, check */
404 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
405 croak ("Coro::State object required");
406 }
407
408 mg = CORO_MAGIC_state (coro);
409 return (struct coro *)mg->mg_ptr;
410}
411
412#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
413
414/* faster than SvSTATE, but expects a coroutine hv */
415#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
416#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
417
418/*****************************************************************************/
419/* padlist management and caching */
420
314static AV * 421static AV *
315coro_clone_padlist (pTHX_ CV *cv) 422coro_derive_padlist (pTHX_ CV *cv)
316{ 423{
317 AV *padlist = CvPADLIST (cv); 424 AV *padlist = CvPADLIST (cv);
318 AV *newpadlist, *newpad; 425 AV *newpadlist, *newpad;
319 426
320 newpadlist = newAV (); 427 newpadlist = newAV ();
… …
325 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 432 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
326#endif 433#endif
327 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 434 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
328 --AvFILLp (padlist); 435 --AvFILLp (padlist);
329 436
330 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 437 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
331 av_store (newpadlist, 1, (SV *)newpad); 438 av_store (newpadlist, 1, (SV *)newpad);
332 439
333 return newpadlist; 440 return newpadlist;
334} 441}
335 442
336static void 443static void
337free_padlist (pTHX_ AV *padlist) 444free_padlist (pTHX_ AV *padlist)
338{ 445{
339 /* may be during global destruction */ 446 /* may be during global destruction */
340 if (SvREFCNT (padlist)) 447 if (!IN_DESTRUCT)
341 { 448 {
342 I32 i = AvFILLp (padlist); 449 I32 i = AvFILLp (padlist);
343 while (i >= 0) 450
451 while (i > 0) /* special-case index 0 */
344 { 452 {
345 SV **svp = av_fetch (padlist, i--, FALSE); 453 /* we try to be extra-careful here */
346 if (svp) 454 AV *av = (AV *)AvARRAY (padlist)[i--];
347 { 455 I32 j = AvFILLp (av);
348 SV *sv; 456
349 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 457 while (j >= 0)
458 SvREFCNT_dec (AvARRAY (av)[j--]);
459
460 AvFILLp (av) = -1;
350 SvREFCNT_dec (sv); 461 SvREFCNT_dec (av);
351
352 SvREFCNT_dec (*svp);
353 }
354 } 462 }
355 463
464 SvREFCNT_dec (AvARRAY (padlist)[0]);
465
466 AvFILLp (padlist) = -1;
356 SvREFCNT_dec ((SV*)padlist); 467 SvREFCNT_dec ((SV*)padlist);
357 } 468 }
358} 469}
359 470
360static int 471static int
… …
369 480
370 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 481 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
371 482
372 return 0; 483 return 0;
373} 484}
374
375#define CORO_MAGIC_type_cv PERL_MAGIC_ext
376#define CORO_MAGIC_type_state PERL_MAGIC_ext
377 485
378static MGVTBL coro_cv_vtbl = { 486static MGVTBL coro_cv_vtbl = {
379 0, 0, 0, 0, 487 0, 0, 0, 0,
380 coro_cv_free 488 coro_cv_free
381}; 489};
382
383#define CORO_MAGIC(sv,type) \
384 SvMAGIC (sv) \
385 ? SvMAGIC (sv)->mg_type == type \
386 ? SvMAGIC (sv) \
387 : mg_find (sv, type) \
388 : 0
389
390#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
391#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
392
393static struct coro *
394SvSTATE_ (pTHX_ SV *coro)
395{
396 HV *stash;
397 MAGIC *mg;
398
399 if (SvROK (coro))
400 coro = SvRV (coro);
401
402 if (expect_false (SvTYPE (coro) != SVt_PVHV))
403 croak ("Coro::State object required");
404
405 stash = SvSTASH (coro);
406 if (expect_false (stash != coro_stash && stash != coro_state_stash))
407 {
408 /* very slow, but rare, check */
409 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
410 croak ("Coro::State object required");
411 }
412
413 mg = CORO_MAGIC_state (coro);
414 return (struct coro *)mg->mg_ptr;
415}
416
417#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
418 490
419/* the next two functions merely cache the padlists */ 491/* the next two functions merely cache the padlists */
420static void 492static void
421get_padlist (pTHX_ CV *cv) 493get_padlist (pTHX_ CV *cv)
422{ 494{
… …
428 else 500 else
429 { 501 {
430#if CORO_PREFER_PERL_FUNCTIONS 502#if CORO_PREFER_PERL_FUNCTIONS
431 /* this is probably cleaner? but also slower! */ 503 /* this is probably cleaner? but also slower! */
432 /* in practise, it seems to be less stable */ 504 /* in practise, it seems to be less stable */
433 CV *cp = Perl_cv_clone (cv); 505 CV *cp = Perl_cv_clone (aTHX_ cv);
434 CvPADLIST (cv) = CvPADLIST (cp); 506 CvPADLIST (cv) = CvPADLIST (cp);
435 CvPADLIST (cp) = 0; 507 CvPADLIST (cp) = 0;
436 SvREFCNT_dec (cp); 508 SvREFCNT_dec (cp);
437#else 509#else
438 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 510 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
439#endif 511#endif
440 } 512 }
441} 513}
442 514
443static void 515static void
… …
450 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 522 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
451 523
452 av = (AV *)mg->mg_obj; 524 av = (AV *)mg->mg_obj;
453 525
454 if (expect_false (AvFILLp (av) >= AvMAX (av))) 526 if (expect_false (AvFILLp (av) >= AvMAX (av)))
455 av_extend (av, AvMAX (av) + 1); 527 av_extend (av, AvFILLp (av) + 1);
456 528
457 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 529 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
458} 530}
459 531
460/** load & save, init *******************************************************/ 532/** load & save, init *******************************************************/
533
534static void
535on_enterleave_call (pTHX_ SV *cb);
461 536
462static void 537static void
463load_perl (pTHX_ Coro__State c) 538load_perl (pTHX_ Coro__State c)
464{ 539{
465 perl_slots *slot = c->slot; 540 perl_slots *slot = c->slot;
466 c->slot = 0; 541 c->slot = 0;
467 542
468 PL_mainstack = c->mainstack; 543 PL_mainstack = c->mainstack;
469 544
470 GvSV (PL_defgv) = slot->defsv; 545 GvSV (PL_defgv) = slot->defsv;
471 GvAV (PL_defgv) = slot->defav; 546 GvAV (PL_defgv) = slot->defav;
472 GvSV (PL_errgv) = slot->errsv; 547 GvSV (PL_errgv) = slot->errsv;
473 GvSV (irsgv) = slot->irsgv; 548 GvSV (irsgv) = slot->irsgv;
549 GvHV (PL_hintgv) = slot->hinthv;
474 550
475 #define VAR(name,type) PL_ ## name = slot->name; 551 #define VAR(name,type) PL_ ## name = slot->name;
476 # include "state.h" 552 # include "state.h"
477 #undef VAR 553 #undef VAR
478 554
… …
489 CvPADLIST (cv) = (AV *)POPs; 565 CvPADLIST (cv) = (AV *)POPs;
490 } 566 }
491 567
492 PUTBACK; 568 PUTBACK;
493 } 569 }
570
571 slf_frame = c->slf_frame;
572 CORO_THROW = c->except;
573
574 if (expect_false (c->on_enter))
575 {
576 int i;
577
578 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
579 on_enterleave_call (AvARRAY (c->on_enter)[i]);
580 }
494} 581}
495 582
496static void 583static void
497save_perl (pTHX_ Coro__State c) 584save_perl (pTHX_ Coro__State c)
498{ 585{
586 if (expect_false (c->on_leave))
587 {
588 int i;
589
590 for (i = AvFILLp (c->on_leave); i >= 0; --i)
591 on_enterleave_call (AvARRAY (c->on_leave)[i]);
592 }
593
594 c->except = CORO_THROW;
595 c->slf_frame = slf_frame;
596
499 { 597 {
500 dSP; 598 dSP;
501 I32 cxix = cxstack_ix; 599 I32 cxix = cxstack_ix;
502 PERL_CONTEXT *ccstk = cxstack; 600 PERL_CONTEXT *ccstk = cxstack;
503 PERL_SI *top_si = PL_curstackinfo; 601 PERL_SI *top_si = PL_curstackinfo;
… …
558 c->mainstack = PL_mainstack; 656 c->mainstack = PL_mainstack;
559 657
560 { 658 {
561 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 659 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
562 660
563 slot->defav = GvAV (PL_defgv); 661 slot->defav = GvAV (PL_defgv);
564 slot->defsv = DEFSV; 662 slot->defsv = DEFSV;
565 slot->errsv = ERRSV; 663 slot->errsv = ERRSV;
566 slot->irsgv = GvSV (irsgv); 664 slot->irsgv = GvSV (irsgv);
665 slot->hinthv = GvHV (PL_hintgv);
567 666
568 #define VAR(name,type) slot->name = PL_ ## name; 667 #define VAR(name,type) slot->name = PL_ ## name;
569 # include "state.h" 668 # include "state.h"
570 #undef VAR 669 #undef VAR
571 } 670 }
572} 671}
573 672
574/* 673/*
575 * allocate various perl stacks. This is an exact copy 674 * allocate various perl stacks. This is almost an exact copy
576 * of perl.c:init_stacks, except that it uses less memory 675 * of perl.c:init_stacks, except that it uses less memory
577 * on the (sometimes correct) assumption that coroutines do 676 * on the (sometimes correct) assumption that coroutines do
578 * not usually need a lot of stackspace. 677 * not usually need a lot of stackspace.
579 */ 678 */
580#if CORO_PREFER_PERL_FUNCTIONS 679#if CORO_PREFER_PERL_FUNCTIONS
581# define coro_init_stacks init_stacks 680# define coro_init_stacks(thx) init_stacks ()
582#else 681#else
583static void 682static void
584coro_init_stacks (pTHX) 683coro_init_stacks (pTHX)
585{ 684{
586 PL_curstackinfo = new_stackinfo(32, 8); 685 PL_curstackinfo = new_stackinfo(32, 8);
… …
623 722
624/* 723/*
625 * destroy the stacks, the callchain etc... 724 * destroy the stacks, the callchain etc...
626 */ 725 */
627static void 726static void
628coro_destroy_stacks (pTHX) 727coro_destruct_stacks (pTHX)
629{ 728{
630 while (PL_curstackinfo->si_next) 729 while (PL_curstackinfo->si_next)
631 PL_curstackinfo = PL_curstackinfo->si_next; 730 PL_curstackinfo = PL_curstackinfo->si_next;
632 731
633 while (PL_curstackinfo) 732 while (PL_curstackinfo)
… …
649#if !PERL_VERSION_ATLEAST (5,10,0) 748#if !PERL_VERSION_ATLEAST (5,10,0)
650 Safefree (PL_retstack); 749 Safefree (PL_retstack);
651#endif 750#endif
652} 751}
653 752
753#define CORO_RSS \
754 rss += sizeof (SYM (curstackinfo)); \
755 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
756 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
757 rss += SYM (tmps_max) * sizeof (SV *); \
758 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
759 rss += SYM (scopestack_max) * sizeof (I32); \
760 rss += SYM (savestack_max) * sizeof (ANY);
761
654static size_t 762static size_t
655coro_rss (pTHX_ struct coro *coro) 763coro_rss (pTHX_ struct coro *coro)
656{ 764{
657 size_t rss = sizeof (*coro); 765 size_t rss = sizeof (*coro);
658 766
659 if (coro->mainstack) 767 if (coro->mainstack)
660 { 768 {
661 perl_slots tmp_slot;
662 perl_slots *slot;
663
664 if (coro->flags & CF_RUNNING) 769 if (coro->flags & CF_RUNNING)
665 { 770 {
666 slot = &tmp_slot; 771 #define SYM(sym) PL_ ## sym
667 772 CORO_RSS;
668 #define VAR(name,type) slot->name = PL_ ## name;
669 # include "state.h"
670 #undef VAR 773 #undef SYM
671 } 774 }
672 else 775 else
673 slot = coro->slot;
674
675 if (slot)
676 { 776 {
677 rss += sizeof (slot->curstackinfo); 777 #define SYM(sym) coro->slot->sym
678 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 778 CORO_RSS;
679 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 779 #undef SYM
680 rss += slot->tmps_max * sizeof (SV *);
681 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
682 rss += slot->scopestack_max * sizeof (I32);
683 rss += slot->savestack_max * sizeof (ANY);
684
685#if !PERL_VERSION_ATLEAST (5,10,0)
686 rss += slot->retstack_max * sizeof (OP *);
687#endif
688 } 780 }
689 } 781 }
690 782
691 return rss; 783 return rss;
692} 784}
… …
705#endif 797#endif
706 798
707/* 799/*
708 * This overrides the default magic get method of %SIG elements. 800 * This overrides the default magic get method of %SIG elements.
709 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 801 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
710 * and instead of tryign to save and restore the hash elements, we just provide 802 * and instead of trying to save and restore the hash elements, we just provide
711 * readback here. 803 * readback here.
712 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
713 * not expecting this to actually change the hook. This is a potential problem
714 * when a schedule happens then, but we ignore this.
715 */ 804 */
716static int 805static int
717coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 806coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
718{ 807{
719 const char *s = MgPV_nolen_const (mg); 808 const char *s = MgPV_nolen_const (mg);
… …
772 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 861 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
773 862
774 if (svp) 863 if (svp)
775 { 864 {
776 SV *old = *svp; 865 SV *old = *svp;
777 *svp = newSVsv (sv); 866 *svp = SvOK (sv) ? newSVsv (sv) : 0;
778 SvREFCNT_dec (old); 867 SvREFCNT_dec (old);
779 return 0; 868 return 0;
780 } 869 }
781 } 870 }
782 871
783 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 872 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
784} 873}
785 874
786static void 875static void
876prepare_nop (pTHX_ struct coro_transfer_args *ta)
877{
878 /* kind of mega-hacky, but works */
879 ta->next = ta->prev = (struct coro *)ta;
880}
881
882static int
883slf_check_nop (pTHX_ struct CoroSLF *frame)
884{
885 return 0;
886}
887
888static int
889slf_check_repeat (pTHX_ struct CoroSLF *frame)
890{
891 return 1;
892}
893
894static UNOP coro_setup_op;
895
896static void NOINLINE /* noinline to keep it out of the transfer fast path */
787coro_setup (pTHX_ struct coro *coro) 897coro_setup (pTHX_ struct coro *coro)
788{ 898{
789 /* 899 /*
790 * emulate part of the perl startup here. 900 * emulate part of the perl startup here.
791 */ 901 */
… …
793 903
794 PL_runops = RUNOPS_DEFAULT; 904 PL_runops = RUNOPS_DEFAULT;
795 PL_curcop = &PL_compiling; 905 PL_curcop = &PL_compiling;
796 PL_in_eval = EVAL_NULL; 906 PL_in_eval = EVAL_NULL;
797 PL_comppad = 0; 907 PL_comppad = 0;
908 PL_comppad_name = 0;
909 PL_comppad_name_fill = 0;
910 PL_comppad_name_floor = 0;
798 PL_curpm = 0; 911 PL_curpm = 0;
799 PL_curpad = 0; 912 PL_curpad = 0;
800 PL_localizing = 0; 913 PL_localizing = 0;
801 PL_dirty = 0; 914 PL_dirty = 0;
802 PL_restartop = 0; 915 PL_restartop = 0;
803#if PERL_VERSION_ATLEAST (5,10,0) 916#if PERL_VERSION_ATLEAST (5,10,0)
804 PL_parser = 0; 917 PL_parser = 0;
805#endif 918#endif
919 PL_hints = 0;
806 920
807 /* recreate the die/warn hooks */ 921 /* recreate the die/warn hooks */
808 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 922 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
809 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 923 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
810 924
811 GvSV (PL_defgv) = newSV (0); 925 GvSV (PL_defgv) = newSV (0);
812 GvAV (PL_defgv) = coro->args; coro->args = 0; 926 GvAV (PL_defgv) = coro->args; coro->args = 0;
813 GvSV (PL_errgv) = newSV (0); 927 GvSV (PL_errgv) = newSV (0);
814 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 928 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
929 GvHV (PL_hintgv) = 0;
815 PL_rs = newSVsv (GvSV (irsgv)); 930 PL_rs = newSVsv (GvSV (irsgv));
816 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 931 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
817 932
818 { 933 {
819 dSP; 934 dSP;
820 LOGOP myop; 935 UNOP myop;
821 936
822 Zero (&myop, 1, LOGOP); 937 Zero (&myop, 1, UNOP);
823 myop.op_next = Nullop; 938 myop.op_next = Nullop;
939 myop.op_type = OP_ENTERSUB;
824 myop.op_flags = OPf_WANT_VOID; 940 myop.op_flags = OPf_WANT_VOID;
825 941
826 PUSHMARK (SP); 942 PUSHMARK (SP);
827 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 943 PUSHs ((SV *)coro->startcv);
828 PUTBACK; 944 PUTBACK;
829 PL_op = (OP *)&myop; 945 PL_op = (OP *)&myop;
830 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 946 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
831 SPAGAIN;
832 } 947 }
833 948
834 /* this newly created coroutine might be run on an existing cctx which most 949 /* this newly created coroutine might be run on an existing cctx which most
835 * likely was suspended in set_stacklevel, called from entersub. 950 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
836 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
837 * so we ENTER here for symmetry
838 */ 951 */
839 ENTER; 952 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
840} 953 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
841 954
955 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
956 coro_setup_op.op_next = PL_op;
957 coro_setup_op.op_type = OP_ENTERSUB;
958 coro_setup_op.op_ppaddr = pp_slf;
959 /* no flags etc. required, as an init function won't be called */
960
961 PL_op = (OP *)&coro_setup_op;
962
963 /* copy throw, in case it was set before coro_setup */
964 CORO_THROW = coro->except;
965}
966
842static void 967static void
843coro_destroy (pTHX_ struct coro *coro) 968coro_unwind_stacks (pTHX)
844{ 969{
845 if (!IN_DESTRUCT) 970 if (!IN_DESTRUCT)
846 { 971 {
847 /* restore all saved variables and stuff */ 972 /* restore all saved variables and stuff */
848 LEAVE_SCOPE (0); 973 LEAVE_SCOPE (0);
… …
856 POPSTACK_TO (PL_mainstack); 981 POPSTACK_TO (PL_mainstack);
857 982
858 /* unwind main stack */ 983 /* unwind main stack */
859 dounwind (-1); 984 dounwind (-1);
860 } 985 }
986}
987
988static void
989coro_destruct_perl (pTHX_ struct coro *coro)
990{
991 coro_unwind_stacks (aTHX);
861 992
862 SvREFCNT_dec (GvSV (PL_defgv)); 993 SvREFCNT_dec (GvSV (PL_defgv));
863 SvREFCNT_dec (GvAV (PL_defgv)); 994 SvREFCNT_dec (GvAV (PL_defgv));
864 SvREFCNT_dec (GvSV (PL_errgv)); 995 SvREFCNT_dec (GvSV (PL_errgv));
865 SvREFCNT_dec (PL_defoutgv); 996 SvREFCNT_dec (PL_defoutgv);
866 SvREFCNT_dec (PL_rs); 997 SvREFCNT_dec (PL_rs);
867 SvREFCNT_dec (GvSV (irsgv)); 998 SvREFCNT_dec (GvSV (irsgv));
999 SvREFCNT_dec (GvHV (PL_hintgv));
868 1000
869 SvREFCNT_dec (PL_diehook); 1001 SvREFCNT_dec (PL_diehook);
870 SvREFCNT_dec (PL_warnhook); 1002 SvREFCNT_dec (PL_warnhook);
871 1003
872 SvREFCNT_dec (coro->saved_deffh); 1004 SvREFCNT_dec (coro->saved_deffh);
873 SvREFCNT_dec (coro->throw); 1005 SvREFCNT_dec (coro->rouse_cb);
1006 SvREFCNT_dec (coro->invoke_cb);
1007 SvREFCNT_dec (coro->invoke_av);
874 1008
875 coro_destroy_stacks (aTHX); 1009 coro_destruct_stacks (aTHX);
876} 1010}
877 1011
878static void 1012INLINE void
879free_coro_mortal (pTHX) 1013free_coro_mortal (pTHX)
880{ 1014{
881 if (expect_true (coro_mortal)) 1015 if (expect_true (coro_mortal))
882 { 1016 {
883 SvREFCNT_dec (coro_mortal); 1017 SvREFCNT_dec (coro_mortal);
… …
888static int 1022static int
889runops_trace (pTHX) 1023runops_trace (pTHX)
890{ 1024{
891 COP *oldcop = 0; 1025 COP *oldcop = 0;
892 int oldcxix = -2; 1026 int oldcxix = -2;
893 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
894 coro_cctx *cctx = coro->cctx;
895 1027
896 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1028 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
897 { 1029 {
898 PERL_ASYNC_CHECK (); 1030 PERL_ASYNC_CHECK ();
899 1031
900 if (cctx->flags & CC_TRACE_ALL) 1032 if (cctx_current->flags & CC_TRACE_ALL)
901 { 1033 {
902 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1034 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
903 { 1035 {
904 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1036 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
905 SV **bot, **top; 1037 SV **bot, **top;
906 AV *av = newAV (); /* return values */ 1038 AV *av = newAV (); /* return values */
907 SV **cb; 1039 SV **cb;
… …
944 1076
945 if (PL_curcop != &PL_compiling) 1077 if (PL_curcop != &PL_compiling)
946 { 1078 {
947 SV **cb; 1079 SV **cb;
948 1080
949 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1081 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
950 { 1082 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1083 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 1084
953 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1085 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
954 { 1086 {
955 runops_proc_t old_runops = PL_runops;
956 dSP; 1087 dSP;
957 GV *gv = CvGV (cx->blk_sub.cv); 1088 GV *gv = CvGV (cx->blk_sub.cv);
958 SV *fullname = sv_2mortal (newSV (0)); 1089 SV *fullname = sv_2mortal (newSV (0));
959 1090
960 if (isGV (gv)) 1091 if (isGV (gv))
… …
965 SAVETMPS; 1096 SAVETMPS;
966 EXTEND (SP, 3); 1097 EXTEND (SP, 3);
967 PUSHMARK (SP); 1098 PUSHMARK (SP);
968 PUSHs (&PL_sv_yes); 1099 PUSHs (&PL_sv_yes);
969 PUSHs (fullname); 1100 PUSHs (fullname);
970 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1101 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
971 PUTBACK; 1102 PUTBACK;
972 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1103 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
973 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1104 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
974 SPAGAIN; 1105 SPAGAIN;
975 FREETMPS; 1106 FREETMPS;
… …
978 } 1109 }
979 1110
980 oldcxix = cxstack_ix; 1111 oldcxix = cxstack_ix;
981 } 1112 }
982 1113
983 if (cctx->flags & CC_TRACE_LINE) 1114 if (cctx_current->flags & CC_TRACE_LINE)
984 { 1115 {
985 dSP; 1116 dSP;
986 1117
987 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
988 ENTER; 1119 ENTER;
… …
1007 1138
1008 TAINT_NOT; 1139 TAINT_NOT;
1009 return 0; 1140 return 0;
1010} 1141}
1011 1142
1012/* inject a fake call to Coro::State::_cctx_init into the execution */ 1143static struct CoroSLF cctx_ssl_frame;
1013/* _cctx_init should be careful, as it could be called at almost any time */ 1144
1014/* during execution of a perl program */ 1145static void
1146slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1147{
1148 ta->prev = 0;
1149}
1150
1151static int
1152slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1153{
1154 *frame = cctx_ssl_frame;
1155
1156 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1157}
1158
1159/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1015static void NOINLINE 1160static void NOINLINE
1016cctx_prepare (pTHX_ coro_cctx *cctx) 1161cctx_prepare (pTHX)
1017{ 1162{
1018 dSP;
1019 LOGOP myop;
1020
1021 PL_top_env = &PL_start_env; 1163 PL_top_env = &PL_start_env;
1022 1164
1023 if (cctx->flags & CC_TRACE) 1165 if (cctx_current->flags & CC_TRACE)
1024 PL_runops = runops_trace; 1166 PL_runops = runops_trace;
1025 1167
1026 Zero (&myop, 1, LOGOP); 1168 /* we already must be executing an SLF op, there is no other valid way
1027 myop.op_next = PL_op; 1169 * that can lead to creation of a new cctx */
1028 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1170 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1171 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1029 1172
1030 PUSHMARK (SP); 1173 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1031 EXTEND (SP, 2); 1174 cctx_ssl_frame = slf_frame;
1032 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1175
1033 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1176 slf_frame.prepare = slf_prepare_set_stacklevel;
1034 PUTBACK; 1177 slf_frame.check = slf_check_set_stacklevel;
1035 PL_op = (OP *)&myop; 1178}
1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1179
1037 SPAGAIN; 1180/* the tail of transfer: execute stuff we can only do after a transfer */
1181INLINE void
1182transfer_tail (pTHX)
1183{
1184 free_coro_mortal (aTHX);
1038} 1185}
1039 1186
1040/* 1187/*
1041 * this is a _very_ stripped down perl interpreter ;) 1188 * this is a _very_ stripped down perl interpreter ;)
1042 */ 1189 */
1043static void 1190static void
1044cctx_run (void *arg) 1191cctx_run (void *arg)
1045{ 1192{
1193#ifdef USE_ITHREADS
1194# if CORO_PTHREAD
1195 PERL_SET_CONTEXT (coro_thx);
1196# endif
1197#endif
1198 {
1046 dTHX; 1199 dTHX;
1047 1200
1048 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1201 /* normally we would need to skip the entersub here */
1049 UNLOCK; 1202 /* not doing so will re-execute it, which is exactly what we want */
1050
1051 /* we now skip the entersub that lead to transfer() */
1052 PL_op = PL_op->op_next; 1203 /* PL_nop = PL_nop->op_next */
1053 1204
1054 /* inject a fake subroutine call to cctx_init */ 1205 /* inject a fake subroutine call to cctx_init */
1055 cctx_prepare (aTHX_ (coro_cctx *)arg); 1206 cctx_prepare (aTHX);
1056 1207
1208 /* cctx_run is the alternative tail of transfer() */
1209 transfer_tail (aTHX);
1210
1057 /* somebody or something will hit me for both perl_run and PL_restartop */ 1211 /* somebody or something will hit me for both perl_run and PL_restartop */
1058 PL_restartop = PL_op; 1212 PL_restartop = PL_op;
1059 perl_run (PL_curinterp); 1213 perl_run (PL_curinterp);
1060
1061 /* 1214 /*
1215 * Unfortunately, there is no way to get at the return values of the
1216 * coro body here, as perl_run destroys these
1217 */
1218
1219 /*
1062 * If perl-run returns we assume exit() was being called or the coro 1220 * If perl-run returns we assume exit() was being called or the coro
1063 * fell off the end, which seems to be the only valid (non-bug) 1221 * fell off the end, which seems to be the only valid (non-bug)
1064 * reason for perl_run to return. We try to exit by jumping to the 1222 * reason for perl_run to return. We try to exit by jumping to the
1065 * bootstrap-time "top" top_env, as we cannot restore the "main" 1223 * bootstrap-time "top" top_env, as we cannot restore the "main"
1066 * coroutine as Coro has no such concept 1224 * coroutine as Coro has no such concept.
1225 * This actually isn't valid with the pthread backend, but OSes requiring
1226 * that backend are too broken to do it in a standards-compliant way.
1067 */ 1227 */
1068 PL_top_env = main_top_env; 1228 PL_top_env = main_top_env;
1069 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1229 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1230 }
1070} 1231}
1071 1232
1072static coro_cctx * 1233static coro_cctx *
1073cctx_new () 1234cctx_new ()
1074{ 1235{
1075 coro_cctx *cctx; 1236 coro_cctx *cctx;
1237
1238 ++cctx_count;
1239 New (0, cctx, 1, coro_cctx);
1240
1241 cctx->gen = cctx_gen;
1242 cctx->flags = 0;
1243 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1244
1245 return cctx;
1246}
1247
1248/* create a new cctx only suitable as source */
1249static coro_cctx *
1250cctx_new_empty ()
1251{
1252 coro_cctx *cctx = cctx_new ();
1253
1254 cctx->sptr = 0;
1255 coro_create (&cctx->cctx, 0, 0, 0, 0);
1256
1257 return cctx;
1258}
1259
1260/* create a new cctx suitable as destination/running a perl interpreter */
1261static coro_cctx *
1262cctx_new_run ()
1263{
1264 coro_cctx *cctx = cctx_new ();
1076 void *stack_start; 1265 void *stack_start;
1077 size_t stack_size; 1266 size_t stack_size;
1078 1267
1079 ++cctx_count;
1080
1081 Newz (0, cctx, 1, coro_cctx);
1082
1083#if HAVE_MMAP 1268#if HAVE_MMAP
1084 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1269 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1085 /* mmap supposedly does allocate-on-write for us */ 1270 /* mmap supposedly does allocate-on-write for us */
1086 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1271 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1087 1272
1088 if (cctx->sptr != (void *)-1) 1273 if (cctx->sptr != (void *)-1)
1089 { 1274 {
1090# if CORO_STACKGUARD 1275 #if CORO_STACKGUARD
1091 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1276 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1092# endif 1277 #endif
1093 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1278 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1094 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1279 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1095 cctx->flags |= CC_MAPPED; 1280 cctx->flags |= CC_MAPPED;
1096 } 1281 }
1097 else 1282 else
1098#endif 1283#endif
1099 { 1284 {
1100 cctx->ssize = coro_stacksize * (long)sizeof (long); 1285 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1101 New (0, cctx->sptr, coro_stacksize, long); 1286 New (0, cctx->sptr, cctx_stacksize, long);
1102 1287
1103 if (!cctx->sptr) 1288 if (!cctx->sptr)
1104 { 1289 {
1105 perror ("FATAL: unable to allocate stack for coroutine"); 1290 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1106 _exit (EXIT_FAILURE); 1291 _exit (EXIT_FAILURE);
1107 } 1292 }
1108 1293
1109 stack_start = cctx->sptr; 1294 stack_start = cctx->sptr;
1110 stack_size = cctx->ssize; 1295 stack_size = cctx->ssize;
1111 } 1296 }
1112 1297
1113 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1298 #if CORO_USE_VALGRIND
1299 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1300 #endif
1301
1114 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1302 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1115 1303
1116 return cctx; 1304 return cctx;
1117} 1305}
1118 1306
… …
1120cctx_destroy (coro_cctx *cctx) 1308cctx_destroy (coro_cctx *cctx)
1121{ 1309{
1122 if (!cctx) 1310 if (!cctx)
1123 return; 1311 return;
1124 1312
1313 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1314
1125 --cctx_count; 1315 --cctx_count;
1316 coro_destroy (&cctx->cctx);
1126 1317
1318 /* coro_transfer creates new, empty cctx's */
1319 if (cctx->sptr)
1320 {
1127#if CORO_USE_VALGRIND 1321 #if CORO_USE_VALGRIND
1128 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1322 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1129#endif 1323 #endif
1130 1324
1131#if HAVE_MMAP 1325#if HAVE_MMAP
1132 if (cctx->flags & CC_MAPPED) 1326 if (cctx->flags & CC_MAPPED)
1133 munmap (cctx->sptr, cctx->ssize); 1327 munmap (cctx->sptr, cctx->ssize);
1134 else 1328 else
1135#endif 1329#endif
1136 Safefree (cctx->sptr); 1330 Safefree (cctx->sptr);
1331 }
1137 1332
1138 Safefree (cctx); 1333 Safefree (cctx);
1139} 1334}
1140 1335
1141/* wether this cctx should be destructed */ 1336/* wether this cctx should be destructed */
1142#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1337#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1143 1338
1144static coro_cctx * 1339static coro_cctx *
1145cctx_get (pTHX) 1340cctx_get (pTHX)
1146{ 1341{
1147 while (expect_true (cctx_first)) 1342 while (expect_true (cctx_first))
… …
1154 return cctx; 1349 return cctx;
1155 1350
1156 cctx_destroy (cctx); 1351 cctx_destroy (cctx);
1157 } 1352 }
1158 1353
1159 return cctx_new (); 1354 return cctx_new_run ();
1160} 1355}
1161 1356
1162static void 1357static void
1163cctx_put (coro_cctx *cctx) 1358cctx_put (coro_cctx *cctx)
1164{ 1359{
1360 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1361
1165 /* free another cctx if overlimit */ 1362 /* free another cctx if overlimit */
1166 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1363 if (expect_false (cctx_idle >= cctx_max_idle))
1167 { 1364 {
1168 coro_cctx *first = cctx_first; 1365 coro_cctx *first = cctx_first;
1169 cctx_first = first->next; 1366 cctx_first = first->next;
1170 --cctx_idle; 1367 --cctx_idle;
1171 1368
… …
1180/** coroutine switching *****************************************************/ 1377/** coroutine switching *****************************************************/
1181 1378
1182static void 1379static void
1183transfer_check (pTHX_ struct coro *prev, struct coro *next) 1380transfer_check (pTHX_ struct coro *prev, struct coro *next)
1184{ 1381{
1382 /* TODO: throwing up here is considered harmful */
1383
1185 if (expect_true (prev != next)) 1384 if (expect_true (prev != next))
1186 { 1385 {
1187 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1386 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1188 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1387 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1189 1388
1190 if (expect_false (next->flags & CF_RUNNING)) 1389 if (expect_false (next->flags & CF_RUNNING))
1191 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1390 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1192 1391
1193 if (expect_false (next->flags & CF_DESTROYED)) 1392 if (expect_false (next->flags & CF_DESTROYED))
1194 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1393 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1195 1394
1196#if !PERL_VERSION_ATLEAST (5,10,0) 1395#if !PERL_VERSION_ATLEAST (5,10,0)
1197 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1396 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1198 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1397 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1199#endif 1398#endif
1200 } 1399 }
1201} 1400}
1202 1401
1203/* always use the TRANSFER macro */ 1402/* always use the TRANSFER macro */
1204static void NOINLINE 1403static void NOINLINE /* noinline so we have a fixed stackframe */
1205transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1404transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1206{ 1405{
1207 dSTACKLEVEL; 1406 dSTACKLEVEL;
1208 static volatile int has_throw;
1209 1407
1210 /* sometimes transfer is only called to set idle_sp */ 1408 /* sometimes transfer is only called to set idle_sp */
1211 if (expect_false (!next)) 1409 if (expect_false (!prev))
1212 { 1410 {
1213 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1411 cctx_current->idle_sp = STACKLEVEL;
1214 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1412 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1215 } 1413 }
1216 else if (expect_true (prev != next)) 1414 else if (expect_true (prev != next))
1217 { 1415 {
1218 coro_cctx *prev__cctx; 1416 coro_cctx *cctx_prev;
1219 1417
1220 if (expect_false (prev->flags & CF_NEW)) 1418 if (expect_false (prev->flags & CF_NEW))
1221 { 1419 {
1222 /* create a new empty context */ 1420 /* create a new empty/source context */
1223 Newz (0, prev->cctx, 1, coro_cctx);
1224 prev->flags &= ~CF_NEW; 1421 prev->flags &= ~CF_NEW;
1225 prev->flags |= CF_RUNNING; 1422 prev->flags |= CF_RUNNING;
1226 } 1423 }
1227 1424
1228 prev->flags &= ~CF_RUNNING; 1425 prev->flags &= ~CF_RUNNING;
1229 next->flags |= CF_RUNNING; 1426 next->flags |= CF_RUNNING;
1230
1231 LOCK;
1232 1427
1233 /* first get rid of the old state */ 1428 /* first get rid of the old state */
1234 save_perl (aTHX_ prev); 1429 save_perl (aTHX_ prev);
1235 1430
1236 if (expect_false (next->flags & CF_NEW)) 1431 if (expect_false (next->flags & CF_NEW))
… …
1241 coro_setup (aTHX_ next); 1436 coro_setup (aTHX_ next);
1242 } 1437 }
1243 else 1438 else
1244 load_perl (aTHX_ next); 1439 load_perl (aTHX_ next);
1245 1440
1246 prev__cctx = prev->cctx;
1247
1248 /* possibly "free" the cctx */ 1441 /* possibly untie and reuse the cctx */
1249 if (expect_true ( 1442 if (expect_true (
1250 prev__cctx->idle_sp == STACKLEVEL 1443 cctx_current->idle_sp == STACKLEVEL
1251 && !(prev__cctx->flags & CC_TRACE) 1444 && !(cctx_current->flags & CC_TRACE)
1252 && !force_cctx 1445 && !force_cctx
1253 )) 1446 ))
1254 { 1447 {
1255 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1448 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1256 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1449 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1257 1450
1258 prev->cctx = 0;
1259
1260 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1451 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1261 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1452 /* without this the next cctx_get might destroy the running cctx while still in use */
1262 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1453 if (expect_false (CCTX_EXPIRED (cctx_current)))
1263 if (!next->cctx) 1454 if (expect_true (!next->cctx))
1264 next->cctx = cctx_get (aTHX); 1455 next->cctx = cctx_get (aTHX);
1265 1456
1266 cctx_put (prev__cctx); 1457 cctx_put (cctx_current);
1267 } 1458 }
1459 else
1460 prev->cctx = cctx_current;
1268 1461
1269 ++next->usecount; 1462 ++next->usecount;
1270 1463
1271 if (expect_true (!next->cctx)) 1464 cctx_prev = cctx_current;
1272 next->cctx = cctx_get (aTHX); 1465 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1273 1466
1274 has_throw = !!next->throw; 1467 next->cctx = 0;
1275 1468
1276 if (expect_false (prev__cctx != next->cctx)) 1469 if (expect_false (cctx_prev != cctx_current))
1277 { 1470 {
1278 prev__cctx->top_env = PL_top_env; 1471 cctx_prev->top_env = PL_top_env;
1279 PL_top_env = next->cctx->top_env; 1472 PL_top_env = cctx_current->top_env;
1280 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1473 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1281 } 1474 }
1282 1475
1283 free_coro_mortal (aTHX); 1476 transfer_tail (aTHX);
1284 UNLOCK;
1285
1286 if (expect_false (has_throw))
1287 {
1288 struct coro *coro = SvSTATE (coro_current);
1289
1290 if (coro->throw)
1291 {
1292 SV *exception = coro->throw;
1293 coro->throw = 0;
1294 sv_setsv (ERRSV, exception);
1295 croak (0);
1296 }
1297 }
1298 } 1477 }
1299} 1478}
1300
1301struct transfer_args
1302{
1303 struct coro *prev, *next;
1304};
1305 1479
1306#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1480#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1307#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1481#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1308 1482
1309/** high level stuff ********************************************************/ 1483/** high level stuff ********************************************************/
… …
1311static int 1485static int
1312coro_state_destroy (pTHX_ struct coro *coro) 1486coro_state_destroy (pTHX_ struct coro *coro)
1313{ 1487{
1314 if (coro->flags & CF_DESTROYED) 1488 if (coro->flags & CF_DESTROYED)
1315 return 0; 1489 return 0;
1490
1491 if (coro->on_destroy)
1492 coro->on_destroy (aTHX_ coro);
1316 1493
1317 coro->flags |= CF_DESTROYED; 1494 coro->flags |= CF_DESTROYED;
1318 1495
1319 if (coro->flags & CF_READY) 1496 if (coro->flags & CF_READY)
1320 { 1497 {
1321 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1498 /* reduce nready, as destroying a ready coro effectively unreadies it */
1322 /* alternative: look through all ready queues and remove the coro */ 1499 /* alternative: look through all ready queues and remove the coro */
1323 LOCK;
1324 --coro_nready; 1500 --coro_nready;
1325 UNLOCK;
1326 } 1501 }
1327 else 1502 else
1328 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1503 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1329 1504
1330 if (coro->mainstack && coro->mainstack != main_mainstack) 1505 if (coro->mainstack
1506 && coro->mainstack != main_mainstack
1507 && coro->slot
1508 && !PL_dirty)
1331 { 1509 {
1332 struct coro temp; 1510 struct coro *current = SvSTATE_current;
1333 1511
1334 if (coro->flags & CF_RUNNING) 1512 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1335 croak ("FATAL: tried to destroy currently running coroutine");
1336 1513
1337 save_perl (aTHX_ &temp); 1514 save_perl (aTHX_ current);
1338 load_perl (aTHX_ coro); 1515 load_perl (aTHX_ coro);
1339 1516
1340 coro_destroy (aTHX_ coro); 1517 coro_destruct_perl (aTHX_ coro);
1341 1518
1342 load_perl (aTHX_ &temp); 1519 load_perl (aTHX_ current);
1343 1520
1344 coro->slot = 0; 1521 coro->slot = 0;
1345 } 1522 }
1346 1523
1347 cctx_destroy (coro->cctx); 1524 cctx_destroy (coro->cctx);
1525 SvREFCNT_dec (coro->startcv);
1348 SvREFCNT_dec (coro->args); 1526 SvREFCNT_dec (coro->args);
1527 SvREFCNT_dec (CORO_THROW);
1349 1528
1350 if (coro->next) coro->next->prev = coro->prev; 1529 if (coro->next) coro->next->prev = coro->prev;
1351 if (coro->prev) coro->prev->next = coro->next; 1530 if (coro->prev) coro->prev->next = coro->next;
1352 if (coro == coro_first) coro_first = coro->next; 1531 if (coro == coro_first) coro_first = coro->next;
1353 1532
… …
1391# define MGf_DUP 0 1570# define MGf_DUP 0
1392#endif 1571#endif
1393}; 1572};
1394 1573
1395static void 1574static void
1396prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1575prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1397{ 1576{
1398 ta->prev = SvSTATE (prev_sv); 1577 ta->prev = SvSTATE (prev_sv);
1399 ta->next = SvSTATE (next_sv); 1578 ta->next = SvSTATE (next_sv);
1400 TRANSFER_CHECK (*ta); 1579 TRANSFER_CHECK (*ta);
1401} 1580}
1402 1581
1403static void 1582static void
1404api_transfer (SV *prev_sv, SV *next_sv) 1583api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1405{ 1584{
1406 dTHX;
1407 struct transfer_args ta; 1585 struct coro_transfer_args ta;
1408 1586
1409 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1587 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1410 TRANSFER (ta, 1); 1588 TRANSFER (ta, 1);
1411} 1589}
1412 1590
1591/*****************************************************************************/
1592/* gensub: simple closure generation utility */
1593
1594#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1595
1596/* create a closure from XS, returns a code reference */
1597/* the arg can be accessed via GENSUB_ARG from the callback */
1598/* the callback must use dXSARGS/XSRETURN */
1599static SV *
1600gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1601{
1602 CV *cv = (CV *)newSV (0);
1603
1604 sv_upgrade ((SV *)cv, SVt_PVCV);
1605
1606 CvANON_on (cv);
1607 CvISXSUB_on (cv);
1608 CvXSUB (cv) = xsub;
1609 GENSUB_ARG = arg;
1610
1611 return newRV_noinc ((SV *)cv);
1612}
1613
1413/** Coro ********************************************************************/ 1614/** Coro ********************************************************************/
1414 1615
1415static void 1616INLINE void
1416coro_enq (pTHX_ SV *coro_sv) 1617coro_enq (pTHX_ struct coro *coro)
1417{ 1618{
1418 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1619 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1419} 1620}
1420 1621
1421static SV * 1622INLINE SV *
1422coro_deq (pTHX) 1623coro_deq (pTHX)
1423{ 1624{
1424 int prio; 1625 int prio;
1425 1626
1426 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1627 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1429 1630
1430 return 0; 1631 return 0;
1431} 1632}
1432 1633
1433static int 1634static int
1434api_ready (SV *coro_sv) 1635api_ready (pTHX_ SV *coro_sv)
1435{ 1636{
1436 dTHX;
1437 struct coro *coro; 1637 struct coro *coro;
1438 SV *sv_hook; 1638 SV *sv_hook;
1439 void (*xs_hook)(void); 1639 void (*xs_hook)(void);
1440 1640
1441 if (SvROK (coro_sv))
1442 coro_sv = SvRV (coro_sv);
1443
1444 coro = SvSTATE (coro_sv); 1641 coro = SvSTATE (coro_sv);
1445 1642
1446 if (coro->flags & CF_READY) 1643 if (coro->flags & CF_READY)
1447 return 0; 1644 return 0;
1448 1645
1449 coro->flags |= CF_READY; 1646 coro->flags |= CF_READY;
1450 1647
1451 LOCK;
1452
1453 sv_hook = coro_nready ? 0 : coro_readyhook; 1648 sv_hook = coro_nready ? 0 : coro_readyhook;
1454 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1649 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1455 1650
1456 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1651 coro_enq (aTHX_ coro);
1457 ++coro_nready; 1652 ++coro_nready;
1458 1653
1459 UNLOCK;
1460
1461 if (sv_hook) 1654 if (sv_hook)
1462 { 1655 {
1463 dSP; 1656 dSP;
1464 1657
1465 ENTER; 1658 ENTER;
1466 SAVETMPS; 1659 SAVETMPS;
1467 1660
1468 PUSHMARK (SP); 1661 PUSHMARK (SP);
1469 PUTBACK; 1662 PUTBACK;
1470 call_sv (sv_hook, G_DISCARD); 1663 call_sv (sv_hook, G_VOID | G_DISCARD);
1471 SPAGAIN;
1472 1664
1473 FREETMPS; 1665 FREETMPS;
1474 LEAVE; 1666 LEAVE;
1475 } 1667 }
1476 1668
… …
1479 1671
1480 return 1; 1672 return 1;
1481} 1673}
1482 1674
1483static int 1675static int
1484api_is_ready (SV *coro_sv) 1676api_is_ready (pTHX_ SV *coro_sv)
1485{ 1677{
1486 dTHX;
1487 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1678 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1488} 1679}
1489 1680
1490static void 1681/* expects to own a reference to next->hv */
1682INLINE void
1491prepare_schedule (pTHX_ struct transfer_args *ta) 1683prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1492{ 1684{
1493 SV *prev_sv, *next_sv;
1494
1495 for (;;)
1496 {
1497 LOCK;
1498 next_sv = coro_deq (aTHX);
1499
1500 /* nothing to schedule: call the idle handler */
1501 if (expect_false (!next_sv))
1502 {
1503 dSP;
1504 UNLOCK;
1505
1506 ENTER;
1507 SAVETMPS;
1508
1509 PUSHMARK (SP);
1510 PUTBACK;
1511 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1512 SPAGAIN;
1513
1514 FREETMPS;
1515 LEAVE;
1516 continue;
1517 }
1518
1519 ta->next = SvSTATE (next_sv);
1520
1521 /* cannot transfer to destroyed coros, skip and look for next */
1522 if (expect_false (ta->next->flags & CF_DESTROYED))
1523 {
1524 UNLOCK;
1525 SvREFCNT_dec (next_sv);
1526 /* coro_nready is already taken care of by destroy */
1527 continue;
1528 }
1529
1530 --coro_nready;
1531 UNLOCK;
1532 break;
1533 }
1534
1535 /* free this only after the transfer */
1536 prev_sv = SvRV (coro_current); 1685 SV *prev_sv = SvRV (coro_current);
1686
1537 ta->prev = SvSTATE (prev_sv); 1687 ta->prev = SvSTATE_hv (prev_sv);
1688 ta->next = next;
1689
1538 TRANSFER_CHECK (*ta); 1690 TRANSFER_CHECK (*ta);
1539 assert (ta->next->flags & CF_READY); 1691
1540 ta->next->flags &= ~CF_READY;
1541 SvRV_set (coro_current, next_sv); 1692 SvRV_set (coro_current, (SV *)next->hv);
1542 1693
1543 LOCK;
1544 free_coro_mortal (aTHX); 1694 free_coro_mortal (aTHX);
1545 coro_mortal = prev_sv; 1695 coro_mortal = prev_sv;
1546 UNLOCK;
1547} 1696}
1548 1697
1549static void 1698static void
1699prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1700{
1701 for (;;)
1702 {
1703 SV *next_sv = coro_deq (aTHX);
1704
1705 if (expect_true (next_sv))
1706 {
1707 struct coro *next = SvSTATE_hv (next_sv);
1708
1709 /* cannot transfer to destroyed coros, skip and look for next */
1710 if (expect_false (next->flags & CF_DESTROYED))
1711 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1712 else
1713 {
1714 next->flags &= ~CF_READY;
1715 --coro_nready;
1716
1717 prepare_schedule_to (aTHX_ ta, next);
1718 break;
1719 }
1720 }
1721 else
1722 {
1723 /* nothing to schedule: call the idle handler */
1724 if (SvROK (sv_idle)
1725 && SvOBJECT (SvRV (sv_idle)))
1726 {
1727 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1728 api_ready (aTHX_ SvRV (sv_idle));
1729 --coro_nready;
1730 }
1731 else
1732 {
1733 dSP;
1734
1735 ENTER;
1736 SAVETMPS;
1737
1738 PUSHMARK (SP);
1739 PUTBACK;
1740 call_sv (sv_idle, G_VOID | G_DISCARD);
1741
1742 FREETMPS;
1743 LEAVE;
1744 }
1745 }
1746 }
1747}
1748
1749INLINE void
1550prepare_cede (pTHX_ struct transfer_args *ta) 1750prepare_cede (pTHX_ struct coro_transfer_args *ta)
1551{ 1751{
1552 api_ready (coro_current); 1752 api_ready (aTHX_ coro_current);
1553 prepare_schedule (aTHX_ ta); 1753 prepare_schedule (aTHX_ ta);
1554} 1754}
1555 1755
1756INLINE void
1757prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1758{
1759 SV *prev = SvRV (coro_current);
1760
1761 if (coro_nready)
1762 {
1763 prepare_schedule (aTHX_ ta);
1764 api_ready (aTHX_ prev);
1765 }
1766 else
1767 prepare_nop (aTHX_ ta);
1768}
1769
1770static void
1771api_schedule (pTHX)
1772{
1773 struct coro_transfer_args ta;
1774
1775 prepare_schedule (aTHX_ &ta);
1776 TRANSFER (ta, 1);
1777}
1778
1779static void
1780api_schedule_to (pTHX_ SV *coro_sv)
1781{
1782 struct coro_transfer_args ta;
1783 struct coro *next = SvSTATE (coro_sv);
1784
1785 SvREFCNT_inc_NN (coro_sv);
1786 prepare_schedule_to (aTHX_ &ta, next);
1787}
1788
1556static int 1789static int
1557prepare_cede_notself (pTHX_ struct transfer_args *ta) 1790api_cede (pTHX)
1558{ 1791{
1559 if (coro_nready) 1792 struct coro_transfer_args ta;
1560 { 1793
1561 SV *prev = SvRV (coro_current);
1562 prepare_schedule (aTHX_ ta); 1794 prepare_cede (aTHX_ &ta);
1563 api_ready (prev); 1795
1796 if (expect_true (ta.prev != ta.next))
1797 {
1798 TRANSFER (ta, 1);
1564 return 1; 1799 return 1;
1565 } 1800 }
1566 else 1801 else
1567 return 0; 1802 return 0;
1568} 1803}
1569 1804
1570static void
1571api_schedule (void)
1572{
1573 dTHX;
1574 struct transfer_args ta;
1575
1576 prepare_schedule (aTHX_ &ta);
1577 TRANSFER (ta, 1);
1578}
1579
1580static int 1805static int
1581api_cede (void) 1806api_cede_notself (pTHX)
1582{ 1807{
1583 dTHX; 1808 if (coro_nready)
1809 {
1584 struct transfer_args ta; 1810 struct coro_transfer_args ta;
1585 1811
1586 prepare_cede (aTHX_ &ta); 1812 prepare_cede_notself (aTHX_ &ta);
1587
1588 if (expect_true (ta.prev != ta.next))
1589 {
1590 TRANSFER (ta, 1); 1813 TRANSFER (ta, 1);
1591 return 1; 1814 return 1;
1592 } 1815 }
1593 else 1816 else
1594 return 0; 1817 return 0;
1595} 1818}
1596 1819
1597static int 1820static void
1598api_cede_notself (void)
1599{
1600 dTHX;
1601 struct transfer_args ta;
1602
1603 if (prepare_cede_notself (aTHX_ &ta))
1604 {
1605 TRANSFER (ta, 1);
1606 return 1;
1607 }
1608 else
1609 return 0;
1610}
1611
1612static void
1613api_trace (SV *coro_sv, int flags) 1821api_trace (pTHX_ SV *coro_sv, int flags)
1614{ 1822{
1615 dTHX;
1616 struct coro *coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1617 1824
1825 if (coro->flags & CF_RUNNING)
1826 croak ("cannot enable tracing on a running coroutine, caught");
1827
1618 if (flags & CC_TRACE) 1828 if (flags & CC_TRACE)
1619 { 1829 {
1620 if (!coro->cctx) 1830 if (!coro->cctx)
1621 coro->cctx = cctx_new (); 1831 coro->cctx = cctx_new_run ();
1622 else if (!(coro->cctx->flags & CC_TRACE)) 1832 else if (!(coro->cctx->flags & CC_TRACE))
1623 croak ("cannot enable tracing on coroutine with custom stack"); 1833 croak ("cannot enable tracing on coroutine with custom stack, caught");
1624 1834
1625 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1835 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1626 } 1836 }
1627 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1837 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1628 { 1838 {
… …
1633 else 1843 else
1634 coro->slot->runops = RUNOPS_DEFAULT; 1844 coro->slot->runops = RUNOPS_DEFAULT;
1635 } 1845 }
1636} 1846}
1637 1847
1848static void
1849coro_call_on_destroy (pTHX_ struct coro *coro)
1850{
1851 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1852 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1853
1854 if (on_destroyp)
1855 {
1856 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1857
1858 while (AvFILLp (on_destroy) >= 0)
1859 {
1860 dSP; /* don't disturb outer sp */
1861 SV *cb = av_pop (on_destroy);
1862
1863 PUSHMARK (SP);
1864
1865 if (statusp)
1866 {
1867 int i;
1868 AV *status = (AV *)SvRV (*statusp);
1869 EXTEND (SP, AvFILLp (status) + 1);
1870
1871 for (i = 0; i <= AvFILLp (status); ++i)
1872 PUSHs (AvARRAY (status)[i]);
1873 }
1874
1875 PUTBACK;
1876 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1877 }
1878 }
1879}
1880
1881static void
1882slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883{
1884 int i;
1885 HV *hv = (HV *)SvRV (coro_current);
1886 AV *av = newAV ();
1887
1888 av_extend (av, items - 1);
1889 for (i = 0; i < items; ++i)
1890 av_push (av, SvREFCNT_inc_NN (arg [i]));
1891
1892 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1893
1894 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1895 api_ready (aTHX_ sv_manager);
1896
1897 frame->prepare = prepare_schedule;
1898 frame->check = slf_check_repeat;
1899
1900 /* as a minor optimisation, we could unwind all stacks here */
1901 /* but that puts extra pressure on pp_slf, and is not worth much */
1902 /*coro_unwind_stacks (aTHX);*/
1903}
1904
1905/*****************************************************************************/
1906/* async pool handler */
1907
1638static int 1908static int
1639coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1909slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1640{ 1910{
1641 AV *padlist; 1911 HV *hv = (HV *)SvRV (coro_current);
1642 AV *av = (AV *)mg->mg_obj; 1912 struct coro *coro = (struct coro *)frame->data;
1643 1913
1644 abort (); 1914 if (!coro->invoke_cb)
1915 return 1; /* loop till we have invoke */
1916 else
1917 {
1918 hv_store (hv, "desc", sizeof ("desc") - 1,
1919 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1920
1921 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1922
1923 {
1924 dSP;
1925 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1926 PUTBACK;
1927 }
1928
1929 SvREFCNT_dec (GvAV (PL_defgv));
1930 GvAV (PL_defgv) = coro->invoke_av;
1931 coro->invoke_av = 0;
1932
1933 return 0;
1934 }
1935}
1936
1937static void
1938slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1939{
1940 HV *hv = (HV *)SvRV (coro_current);
1941 struct coro *coro = SvSTATE_hv ((SV *)hv);
1942
1943 if (expect_true (coro->saved_deffh))
1944 {
1945 /* subsequent iteration */
1946 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1947 coro->saved_deffh = 0;
1948
1949 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1950 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1951 {
1952 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1953 coro->invoke_av = newAV ();
1954
1955 frame->prepare = prepare_nop;
1956 }
1957 else
1958 {
1959 av_clear (GvAV (PL_defgv));
1960 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1961
1962 coro->prio = 0;
1963
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (aTHX_ coro_current, 0);
1966
1967 frame->prepare = prepare_schedule;
1968 av_push (av_async_pool, SvREFCNT_inc (hv));
1969 }
1970 }
1971 else
1972 {
1973 /* first iteration, simply fall through */
1974 frame->prepare = prepare_nop;
1975 }
1976
1977 frame->check = slf_check_pool_handler;
1978 frame->data = (void *)coro;
1979}
1980
1981/*****************************************************************************/
1982/* rouse callback */
1983
1984#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1985
1986static void
1987coro_rouse_callback (pTHX_ CV *cv)
1988{
1989 dXSARGS;
1990 SV *data = (SV *)GENSUB_ARG;
1991
1992 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1993 {
1994 /* first call, set args */
1995 AV *av = newAV ();
1996 SV *coro = SvRV (data);
1997
1998 SvRV_set (data, (SV *)av);
1999 api_ready (aTHX_ coro);
2000 SvREFCNT_dec (coro);
2001
2002 /* better take a full copy of the arguments */
2003 while (items--)
2004 av_store (av, items, newSVsv (ST (items)));
2005 }
2006
2007 XSRETURN_EMPTY;
2008}
2009
2010static int
2011slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2012{
2013 SV *data = (SV *)frame->data;
2014
2015 if (CORO_THROW)
2016 return 0;
2017
2018 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2019 return 1;
2020
2021 /* now push all results on the stack */
2022 {
2023 dSP;
2024 AV *av = (AV *)SvRV (data);
2025 int i;
2026
2027 EXTEND (SP, AvFILLp (av) + 1);
2028 for (i = 0; i <= AvFILLp (av); ++i)
2029 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2030
2031 /* we have stolen the elements, so ste length to zero and free */
2032 AvFILLp (av) = -1;
2033 av_undef (av);
2034
2035 PUTBACK;
2036 }
1645 2037
1646 return 0; 2038 return 0;
1647} 2039}
1648 2040
1649static MGVTBL coro_gensub_vtbl = { 2041static void
1650 0, 0, 0, 0, 2042slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1651 coro_gensub_free 2043{
1652}; 2044 SV *cb;
2045
2046 if (items)
2047 cb = arg [0];
2048 else
2049 {
2050 struct coro *coro = SvSTATE_current;
2051
2052 if (!coro->rouse_cb)
2053 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2054
2055 cb = sv_2mortal (coro->rouse_cb);
2056 coro->rouse_cb = 0;
2057 }
2058
2059 if (!SvROK (cb)
2060 || SvTYPE (SvRV (cb)) != SVt_PVCV
2061 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2062 croak ("Coro::rouse_wait called with illegal callback argument,");
2063
2064 {
2065 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2066 SV *data = (SV *)GENSUB_ARG;
2067
2068 frame->data = (void *)data;
2069 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2070 frame->check = slf_check_rouse_wait;
2071 }
2072}
2073
2074static SV *
2075coro_new_rouse_cb (pTHX)
2076{
2077 HV *hv = (HV *)SvRV (coro_current);
2078 struct coro *coro = SvSTATE_hv (hv);
2079 SV *data = newRV_inc ((SV *)hv);
2080 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2081
2082 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2083 SvREFCNT_dec (data); /* magicext increases the refcount */
2084
2085 SvREFCNT_dec (coro->rouse_cb);
2086 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2087
2088 return cb;
2089}
2090
2091/*****************************************************************************/
2092/* schedule-like-function opcode (SLF) */
2093
2094static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2095static const CV *slf_cv;
2096static SV **slf_argv;
2097static int slf_argc, slf_arga; /* count, allocated */
2098static I32 slf_ax; /* top of stack, for restore */
2099
2100/* this restores the stack in the case we patched the entersub, to */
2101/* recreate the stack frame as perl will on following calls */
2102/* since entersub cleared the stack */
2103static OP *
2104pp_restore (pTHX)
2105{
2106 int i;
2107 SV **SP = PL_stack_base + slf_ax;
2108
2109 PUSHMARK (SP);
2110
2111 EXTEND (SP, slf_argc + 1);
2112
2113 for (i = 0; i < slf_argc; ++i)
2114 PUSHs (sv_2mortal (slf_argv [i]));
2115
2116 PUSHs ((SV *)CvGV (slf_cv));
2117
2118 RETURNOP (slf_restore.op_first);
2119}
2120
2121static void
2122slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2123{
2124 SV **arg = (SV **)slf_frame.data;
2125
2126 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2127}
2128
2129static void
2130slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 if (items != 2)
2133 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2134
2135 frame->prepare = slf_prepare_transfer;
2136 frame->check = slf_check_nop;
2137 frame->data = (void *)arg; /* let's hope it will stay valid */
2138}
2139
2140static void
2141slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_schedule;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2149{
2150 struct coro *next = (struct coro *)slf_frame.data;
2151
2152 SvREFCNT_inc_NN (next->hv);
2153 prepare_schedule_to (aTHX_ ta, next);
2154}
2155
2156static void
2157slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2158{
2159 if (!items)
2160 croak ("Coro::schedule_to expects a coroutine argument, caught");
2161
2162 frame->data = (void *)SvSTATE (arg [0]);
2163 frame->prepare = slf_prepare_schedule_to;
2164 frame->check = slf_check_nop;
2165}
2166
2167static void
2168slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 api_ready (aTHX_ SvRV (coro_current));
2171
2172 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2173}
2174
2175static void
2176slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_cede;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 frame->prepare = prepare_cede_notself;
2186 frame->check = slf_check_nop;
2187}
2188
2189/*
2190 * these not obviously related functions are all rolled into one
2191 * function to increase chances that they all will call transfer with the same
2192 * stack offset
2193 * SLF stands for "schedule-like-function".
2194 */
2195static OP *
2196pp_slf (pTHX)
2197{
2198 I32 checkmark; /* mark SP to see how many elements check has pushed */
2199
2200 /* set up the slf frame, unless it has already been set-up */
2201 /* the latter happens when a new coro has been started */
2202 /* or when a new cctx was attached to an existing coroutine */
2203 if (expect_true (!slf_frame.prepare))
2204 {
2205 /* first iteration */
2206 dSP;
2207 SV **arg = PL_stack_base + TOPMARK + 1;
2208 int items = SP - arg; /* args without function object */
2209 SV *gv = *sp;
2210
2211 /* do a quick consistency check on the "function" object, and if it isn't */
2212 /* for us, divert to the real entersub */
2213 if (SvTYPE (gv) != SVt_PVGV
2214 || !GvCV (gv)
2215 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2216 return PL_ppaddr[OP_ENTERSUB](aTHX);
2217
2218 if (!(PL_op->op_flags & OPf_STACKED))
2219 {
2220 /* ampersand-form of call, use @_ instead of stack */
2221 AV *av = GvAV (PL_defgv);
2222 arg = AvARRAY (av);
2223 items = AvFILLp (av) + 1;
2224 }
2225
2226 /* now call the init function, which needs to set up slf_frame */
2227 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2228 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2229
2230 /* pop args */
2231 SP = PL_stack_base + POPMARK;
2232
2233 PUTBACK;
2234 }
2235
2236 /* now that we have a slf_frame, interpret it! */
2237 /* we use a callback system not to make the code needlessly */
2238 /* complicated, but so we can run multiple perl coros from one cctx */
2239
2240 do
2241 {
2242 struct coro_transfer_args ta;
2243
2244 slf_frame.prepare (aTHX_ &ta);
2245 TRANSFER (ta, 0);
2246
2247 checkmark = PL_stack_sp - PL_stack_base;
2248 }
2249 while (slf_frame.check (aTHX_ &slf_frame));
2250
2251 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2252
2253 /* exception handling */
2254 if (expect_false (CORO_THROW))
2255 {
2256 SV *exception = sv_2mortal (CORO_THROW);
2257
2258 CORO_THROW = 0;
2259 sv_setsv (ERRSV, exception);
2260 croak (0);
2261 }
2262
2263 /* return value handling - mostly like entersub */
2264 /* make sure we put something on the stack in scalar context */
2265 if (GIMME_V == G_SCALAR)
2266 {
2267 dSP;
2268 SV **bot = PL_stack_base + checkmark;
2269
2270 if (sp == bot) /* too few, push undef */
2271 bot [1] = &PL_sv_undef;
2272 else if (sp != bot + 1) /* too many, take last one */
2273 bot [1] = *sp;
2274
2275 SP = bot + 1;
2276
2277 PUTBACK;
2278 }
2279
2280 return NORMAL;
2281}
2282
2283static void
2284api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2285{
2286 int i;
2287 SV **arg = PL_stack_base + ax;
2288 int items = PL_stack_sp - arg + 1;
2289
2290 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2291
2292 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2293 && PL_op->op_ppaddr != pp_slf)
2294 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2295
2296 CvFLAGS (cv) |= CVf_SLF;
2297 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2298 slf_cv = cv;
2299
2300 /* we patch the op, and then re-run the whole call */
2301 /* we have to put the same argument on the stack for this to work */
2302 /* and this will be done by pp_restore */
2303 slf_restore.op_next = (OP *)&slf_restore;
2304 slf_restore.op_type = OP_CUSTOM;
2305 slf_restore.op_ppaddr = pp_restore;
2306 slf_restore.op_first = PL_op;
2307
2308 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2309
2310 if (PL_op->op_flags & OPf_STACKED)
2311 {
2312 if (items > slf_arga)
2313 {
2314 slf_arga = items;
2315 free (slf_argv);
2316 slf_argv = malloc (slf_arga * sizeof (SV *));
2317 }
2318
2319 slf_argc = items;
2320
2321 for (i = 0; i < items; ++i)
2322 slf_argv [i] = SvREFCNT_inc (arg [i]);
2323 }
2324 else
2325 slf_argc = 0;
2326
2327 PL_op->op_ppaddr = pp_slf;
2328 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2329
2330 PL_op = (OP *)&slf_restore;
2331}
2332
2333/*****************************************************************************/
2334/* dynamic wind */
2335
2336static void
2337on_enterleave_call (pTHX_ SV *cb)
2338{
2339 dSP;
2340
2341 PUSHSTACK;
2342
2343 PUSHMARK (SP);
2344 PUTBACK;
2345 call_sv (cb, G_VOID | G_DISCARD);
2346 SPAGAIN;
2347
2348 POPSTACK;
2349}
2350
2351static SV *
2352coro_avp_pop_and_free (AV **avp)
2353{
2354 AV *av = *avp;
2355 SV *res = av_pop (av);
2356
2357 if (AvFILLp (av) < 0)
2358 {
2359 *avp = 0;
2360 SvREFCNT_dec (av);
2361 }
2362
2363 return res;
2364}
2365
2366static void
2367coro_pop_on_enter (pTHX_ void *coro)
2368{
2369 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_enter);
2370 SvREFCNT_dec (cb);
2371}
2372
2373static void
2374coro_pop_on_leave (pTHX_ void *coro)
2375{
2376 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_leave);
2377 on_enterleave_call (sv_2mortal (cb));
2378}
1653 2379
1654/*****************************************************************************/ 2380/*****************************************************************************/
1655/* PerlIO::cede */ 2381/* PerlIO::cede */
1656 2382
1657typedef struct 2383typedef struct
… …
1685 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2411 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1686 double now = nvtime (); 2412 double now = nvtime ();
1687 2413
1688 if (now >= self->next) 2414 if (now >= self->next)
1689 { 2415 {
1690 api_cede (); 2416 api_cede (aTHX);
1691 self->next = now + self->every; 2417 self->next = now + self->every;
1692 } 2418 }
1693 2419
1694 return PerlIOBuf_flush (aTHX_ f); 2420 return PerlIOBuf_flush (aTHX_ f);
1695} 2421}
… …
1724 PerlIOBuf_get_ptr, 2450 PerlIOBuf_get_ptr,
1725 PerlIOBuf_get_cnt, 2451 PerlIOBuf_get_cnt,
1726 PerlIOBuf_set_ptrcnt, 2452 PerlIOBuf_set_ptrcnt,
1727}; 2453};
1728 2454
2455/*****************************************************************************/
2456/* Coro::Semaphore & Coro::Signal */
2457
2458static SV *
2459coro_waitarray_new (pTHX_ int count)
2460{
2461 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2462 AV *av = newAV ();
2463 SV **ary;
2464
2465 /* unfortunately, building manually saves memory */
2466 Newx (ary, 2, SV *);
2467 AvALLOC (av) = ary;
2468#if PERL_VERSION_ATLEAST (5,10,0)
2469 AvARRAY (av) = ary;
2470#else
2471 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2472 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2473 SvPVX ((SV *)av) = (char *)ary;
2474#endif
2475 AvMAX (av) = 1;
2476 AvFILLp (av) = 0;
2477 ary [0] = newSViv (count);
2478
2479 return newRV_noinc ((SV *)av);
2480}
2481
2482/* semaphore */
2483
2484static void
2485coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2486{
2487 SV *count_sv = AvARRAY (av)[0];
2488 IV count = SvIVX (count_sv);
2489
2490 count += adjust;
2491 SvIVX (count_sv) = count;
2492
2493 /* now wake up as many waiters as are expected to lock */
2494 while (count > 0 && AvFILLp (av) > 0)
2495 {
2496 SV *cb;
2497
2498 /* swap first two elements so we can shift a waiter */
2499 AvARRAY (av)[0] = AvARRAY (av)[1];
2500 AvARRAY (av)[1] = count_sv;
2501 cb = av_shift (av);
2502
2503 if (SvOBJECT (cb))
2504 {
2505 api_ready (aTHX_ cb);
2506 --count;
2507 }
2508 else if (SvTYPE (cb) == SVt_PVCV)
2509 {
2510 dSP;
2511 PUSHMARK (SP);
2512 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2513 PUTBACK;
2514 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2515 }
2516
2517 SvREFCNT_dec (cb);
2518 }
2519}
2520
2521static void
2522coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2523{
2524 /* call $sem->adjust (0) to possibly wake up some other waiters */
2525 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2526}
2527
2528static int
2529slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2530{
2531 AV *av = (AV *)frame->data;
2532 SV *count_sv = AvARRAY (av)[0];
2533
2534 /* if we are about to throw, don't actually acquire the lock, just throw */
2535 if (CORO_THROW)
2536 return 0;
2537 else if (SvIVX (count_sv) > 0)
2538 {
2539 SvSTATE_current->on_destroy = 0;
2540
2541 if (acquire)
2542 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2543 else
2544 coro_semaphore_adjust (aTHX_ av, 0);
2545
2546 return 0;
2547 }
2548 else
2549 {
2550 int i;
2551 /* if we were woken up but can't down, we look through the whole */
2552 /* waiters list and only add us if we aren't in there already */
2553 /* this avoids some degenerate memory usage cases */
2554
2555 for (i = 1; i <= AvFILLp (av); ++i)
2556 if (AvARRAY (av)[i] == SvRV (coro_current))
2557 return 1;
2558
2559 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2560 return 1;
2561 }
2562}
2563
2564static int
2565slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2566{
2567 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2568}
2569
2570static int
2571slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2572{
2573 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2574}
2575
2576static void
2577slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2578{
2579 AV *av = (AV *)SvRV (arg [0]);
2580
2581 if (SvIVX (AvARRAY (av)[0]) > 0)
2582 {
2583 frame->data = (void *)av;
2584 frame->prepare = prepare_nop;
2585 }
2586 else
2587 {
2588 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2589
2590 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2591 frame->prepare = prepare_schedule;
2592
2593 /* to avoid race conditions when a woken-up coro gets terminated */
2594 /* we arrange for a temporary on_destroy that calls adjust (0) */
2595 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2596 }
2597}
2598
2599static void
2600slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2601{
2602 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2603 frame->check = slf_check_semaphore_down;
2604}
2605
2606static void
2607slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2608{
2609 if (items >= 2)
2610 {
2611 /* callback form */
2612 AV *av = (AV *)SvRV (arg [0]);
2613 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2614
2615 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2616
2617 if (SvIVX (AvARRAY (av)[0]) > 0)
2618 coro_semaphore_adjust (aTHX_ av, 0);
2619
2620 frame->prepare = prepare_nop;
2621 frame->check = slf_check_nop;
2622 }
2623 else
2624 {
2625 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2626 frame->check = slf_check_semaphore_wait;
2627 }
2628}
2629
2630/* signal */
2631
2632static void
2633coro_signal_wake (pTHX_ AV *av, int count)
2634{
2635 SvIVX (AvARRAY (av)[0]) = 0;
2636
2637 /* now signal count waiters */
2638 while (count > 0 && AvFILLp (av) > 0)
2639 {
2640 SV *cb;
2641
2642 /* swap first two elements so we can shift a waiter */
2643 cb = AvARRAY (av)[0];
2644 AvARRAY (av)[0] = AvARRAY (av)[1];
2645 AvARRAY (av)[1] = cb;
2646
2647 cb = av_shift (av);
2648
2649 api_ready (aTHX_ cb);
2650 sv_setiv (cb, 0); /* signal waiter */
2651 SvREFCNT_dec (cb);
2652
2653 --count;
2654 }
2655}
2656
2657static int
2658slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2659{
2660 /* if we are about to throw, also stop waiting */
2661 return SvROK ((SV *)frame->data) && !CORO_THROW;
2662}
2663
2664static void
2665slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2666{
2667 AV *av = (AV *)SvRV (arg [0]);
2668
2669 if (SvIVX (AvARRAY (av)[0]))
2670 {
2671 SvIVX (AvARRAY (av)[0]) = 0;
2672 frame->prepare = prepare_nop;
2673 frame->check = slf_check_nop;
2674 }
2675 else
2676 {
2677 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2678
2679 av_push (av, waiter);
2680
2681 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2682 frame->prepare = prepare_schedule;
2683 frame->check = slf_check_signal_wait;
2684 }
2685}
2686
2687/*****************************************************************************/
2688/* Coro::AIO */
2689
2690#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2691
2692/* helper storage struct */
2693struct io_state
2694{
2695 int errorno;
2696 I32 laststype; /* U16 in 5.10.0 */
2697 int laststatval;
2698 Stat_t statcache;
2699};
2700
2701static void
2702coro_aio_callback (pTHX_ CV *cv)
2703{
2704 dXSARGS;
2705 AV *state = (AV *)GENSUB_ARG;
2706 SV *coro = av_pop (state);
2707 SV *data_sv = newSV (sizeof (struct io_state));
2708
2709 av_extend (state, items - 1);
2710
2711 sv_upgrade (data_sv, SVt_PV);
2712 SvCUR_set (data_sv, sizeof (struct io_state));
2713 SvPOK_only (data_sv);
2714
2715 {
2716 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2717
2718 data->errorno = errno;
2719 data->laststype = PL_laststype;
2720 data->laststatval = PL_laststatval;
2721 data->statcache = PL_statcache;
2722 }
2723
2724 /* now build the result vector out of all the parameters and the data_sv */
2725 {
2726 int i;
2727
2728 for (i = 0; i < items; ++i)
2729 av_push (state, SvREFCNT_inc_NN (ST (i)));
2730 }
2731
2732 av_push (state, data_sv);
2733
2734 api_ready (aTHX_ coro);
2735 SvREFCNT_dec (coro);
2736 SvREFCNT_dec ((AV *)state);
2737}
2738
2739static int
2740slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2741{
2742 AV *state = (AV *)frame->data;
2743
2744 /* if we are about to throw, return early */
2745 /* this does not cancel the aio request, but at least */
2746 /* it quickly returns */
2747 if (CORO_THROW)
2748 return 0;
2749
2750 /* one element that is an RV? repeat! */
2751 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2752 return 1;
2753
2754 /* restore status */
2755 {
2756 SV *data_sv = av_pop (state);
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 errno = data->errorno;
2760 PL_laststype = data->laststype;
2761 PL_laststatval = data->laststatval;
2762 PL_statcache = data->statcache;
2763
2764 SvREFCNT_dec (data_sv);
2765 }
2766
2767 /* push result values */
2768 {
2769 dSP;
2770 int i;
2771
2772 EXTEND (SP, AvFILLp (state) + 1);
2773 for (i = 0; i <= AvFILLp (state); ++i)
2774 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2775
2776 PUTBACK;
2777 }
2778
2779 return 0;
2780}
2781
2782static void
2783slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2784{
2785 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2786 SV *coro_hv = SvRV (coro_current);
2787 struct coro *coro = SvSTATE_hv (coro_hv);
2788
2789 /* put our coroutine id on the state arg */
2790 av_push (state, SvREFCNT_inc_NN (coro_hv));
2791
2792 /* first see whether we have a non-zero priority and set it as AIO prio */
2793 if (coro->prio)
2794 {
2795 dSP;
2796
2797 static SV *prio_cv;
2798 static SV *prio_sv;
2799
2800 if (expect_false (!prio_cv))
2801 {
2802 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2803 prio_sv = newSViv (0);
2804 }
2805
2806 PUSHMARK (SP);
2807 sv_setiv (prio_sv, coro->prio);
2808 XPUSHs (prio_sv);
2809
2810 PUTBACK;
2811 call_sv (prio_cv, G_VOID | G_DISCARD);
2812 }
2813
2814 /* now call the original request */
2815 {
2816 dSP;
2817 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2818 int i;
2819
2820 PUSHMARK (SP);
2821
2822 /* first push all args to the stack */
2823 EXTEND (SP, items + 1);
2824
2825 for (i = 0; i < items; ++i)
2826 PUSHs (arg [i]);
2827
2828 /* now push the callback closure */
2829 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2830
2831 /* now call the AIO function - we assume our request is uncancelable */
2832 PUTBACK;
2833 call_sv ((SV *)req, G_VOID | G_DISCARD);
2834 }
2835
2836 /* now that the requets is going, we loop toll we have a result */
2837 frame->data = (void *)state;
2838 frame->prepare = prepare_schedule;
2839 frame->check = slf_check_aio_req;
2840}
2841
2842static void
2843coro_aio_req_xs (pTHX_ CV *cv)
2844{
2845 dXSARGS;
2846
2847 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2848
2849 XSRETURN_EMPTY;
2850}
2851
2852/*****************************************************************************/
2853
2854#if CORO_CLONE
2855# include "clone.c"
2856#endif
1729 2857
1730MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2858MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1731 2859
1732PROTOTYPES: DISABLE 2860PROTOTYPES: DISABLE
1733 2861
1734BOOT: 2862BOOT:
1735{ 2863{
1736#ifdef USE_ITHREADS 2864#ifdef USE_ITHREADS
1737 MUTEX_INIT (&coro_mutex); 2865# if CORO_PTHREAD
2866 coro_thx = PERL_GET_CONTEXT;
2867# endif
1738#endif 2868#endif
1739 BOOT_PAGESIZE; 2869 BOOT_PAGESIZE;
2870
2871 cctx_current = cctx_new_empty ();
1740 2872
1741 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2873 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1742 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2874 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1743 2875
1744 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2876 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1760 main_top_env = PL_top_env; 2892 main_top_env = PL_top_env;
1761 2893
1762 while (main_top_env->je_prev) 2894 while (main_top_env->je_prev)
1763 main_top_env = main_top_env->je_prev; 2895 main_top_env = main_top_env->je_prev;
1764 2896
2897 {
2898 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2899
2900 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2901 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2902
2903 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2904 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2905 }
2906
1765 coroapi.ver = CORO_API_VERSION; 2907 coroapi.ver = CORO_API_VERSION;
1766 coroapi.rev = CORO_API_REVISION; 2908 coroapi.rev = CORO_API_REVISION;
2909
1767 coroapi.transfer = api_transfer; 2910 coroapi.transfer = api_transfer;
2911
2912 coroapi.sv_state = SvSTATE_;
2913 coroapi.execute_slf = api_execute_slf;
2914 coroapi.prepare_nop = prepare_nop;
2915 coroapi.prepare_schedule = prepare_schedule;
2916 coroapi.prepare_cede = prepare_cede;
2917 coroapi.prepare_cede_notself = prepare_cede_notself;
1768 2918
1769 { 2919 {
1770 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2920 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1771 2921
1772 if (!svp) croak ("Time::HiRes is required"); 2922 if (!svp) croak ("Time::HiRes is required");
… …
1778 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2928 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1779} 2929}
1780 2930
1781SV * 2931SV *
1782new (char *klass, ...) 2932new (char *klass, ...)
2933 ALIAS:
2934 Coro::new = 1
1783 CODE: 2935 CODE:
1784{ 2936{
1785 struct coro *coro; 2937 struct coro *coro;
1786 MAGIC *mg; 2938 MAGIC *mg;
1787 HV *hv; 2939 HV *hv;
2940 CV *cb;
1788 int i; 2941 int i;
2942
2943 if (items > 1)
2944 {
2945 cb = coro_sv_2cv (aTHX_ ST (1));
2946
2947 if (!ix)
2948 {
2949 if (CvISXSUB (cb))
2950 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2951
2952 if (!CvROOT (cb))
2953 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2954 }
2955 }
1789 2956
1790 Newz (0, coro, 1, struct coro); 2957 Newz (0, coro, 1, struct coro);
1791 coro->args = newAV (); 2958 coro->args = newAV ();
1792 coro->flags = CF_NEW; 2959 coro->flags = CF_NEW;
1793 2960
… …
1798 coro->hv = hv = newHV (); 2965 coro->hv = hv = newHV ();
1799 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2966 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1800 mg->mg_flags |= MGf_DUP; 2967 mg->mg_flags |= MGf_DUP;
1801 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2968 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1802 2969
2970 if (items > 1)
2971 {
1803 av_extend (coro->args, items - 1); 2972 av_extend (coro->args, items - 1 + ix - 1);
2973
2974 if (ix)
2975 {
2976 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2977 cb = cv_coro_run;
2978 }
2979
2980 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2981
1804 for (i = 1; i < items; i++) 2982 for (i = 2; i < items; i++)
1805 av_push (coro->args, newSVsv (ST (i))); 2983 av_push (coro->args, newSVsv (ST (i)));
2984 }
1806} 2985}
1807 OUTPUT: 2986 OUTPUT:
1808 RETVAL 2987 RETVAL
1809 2988
1810# these not obviously related functions are all rolled into the same xs
1811# function to increase chances that they all will call transfer with the same
1812# stack offset
1813void 2989void
1814_set_stacklevel (...) 2990transfer (...)
1815 ALIAS: 2991 PROTOTYPE: $$
1816 Coro::State::transfer = 1 2992 CODE:
1817 Coro::schedule = 2 2993 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1818 Coro::cede = 3
1819 Coro::cede_notself = 4
1820 CODE:
1821{
1822 struct transfer_args ta;
1823
1824 PUTBACK;
1825 switch (ix)
1826 {
1827 case 0:
1828 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1829 ta.next = 0;
1830 break;
1831
1832 case 1:
1833 if (items != 2)
1834 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1835
1836 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1837 break;
1838
1839 case 2:
1840 prepare_schedule (aTHX_ &ta);
1841 break;
1842
1843 case 3:
1844 prepare_cede (aTHX_ &ta);
1845 break;
1846
1847 case 4:
1848 if (!prepare_cede_notself (aTHX_ &ta))
1849 XSRETURN_EMPTY;
1850
1851 break;
1852 }
1853 SPAGAIN;
1854
1855 BARRIER;
1856 PUTBACK;
1857 TRANSFER (ta, 0);
1858 SPAGAIN; /* might be the sp of a different coroutine now */
1859 /* be extra careful not to ever do anything after TRANSFER */
1860}
1861 2994
1862bool 2995bool
1863_destroy (SV *coro_sv) 2996_destroy (SV *coro_sv)
1864 CODE: 2997 CODE:
1865 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2998 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1870_exit (int code) 3003_exit (int code)
1871 PROTOTYPE: $ 3004 PROTOTYPE: $
1872 CODE: 3005 CODE:
1873 _exit (code); 3006 _exit (code);
1874 3007
3008SV *
3009clone (Coro::State coro)
3010 CODE:
3011{
3012#if CORO_CLONE
3013 struct coro *ncoro = coro_clone (aTHX_ coro);
3014 MAGIC *mg;
3015 /* TODO: too much duplication */
3016 ncoro->hv = newHV ();
3017 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3018 mg->mg_flags |= MGf_DUP;
3019 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3020#else
3021 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3022#endif
3023}
3024 OUTPUT:
3025 RETVAL
3026
1875int 3027int
1876cctx_stacksize (int new_stacksize = 0) 3028cctx_stacksize (int new_stacksize = 0)
3029 PROTOTYPE: ;$
1877 CODE: 3030 CODE:
1878 RETVAL = coro_stacksize; 3031 RETVAL = cctx_stacksize;
1879 if (new_stacksize) 3032 if (new_stacksize)
3033 {
1880 coro_stacksize = new_stacksize; 3034 cctx_stacksize = new_stacksize;
3035 ++cctx_gen;
3036 }
1881 OUTPUT: 3037 OUTPUT:
1882 RETVAL 3038 RETVAL
1883 3039
1884int 3040int
3041cctx_max_idle (int max_idle = 0)
3042 PROTOTYPE: ;$
3043 CODE:
3044 RETVAL = cctx_max_idle;
3045 if (max_idle > 1)
3046 cctx_max_idle = max_idle;
3047 OUTPUT:
3048 RETVAL
3049
3050int
1885cctx_count () 3051cctx_count ()
3052 PROTOTYPE:
1886 CODE: 3053 CODE:
1887 RETVAL = cctx_count; 3054 RETVAL = cctx_count;
1888 OUTPUT: 3055 OUTPUT:
1889 RETVAL 3056 RETVAL
1890 3057
1891int 3058int
1892cctx_idle () 3059cctx_idle ()
3060 PROTOTYPE:
1893 CODE: 3061 CODE:
1894 RETVAL = cctx_idle; 3062 RETVAL = cctx_idle;
1895 OUTPUT: 3063 OUTPUT:
1896 RETVAL 3064 RETVAL
1897 3065
1898void 3066void
1899list () 3067list ()
3068 PROTOTYPE:
1900 PPCODE: 3069 PPCODE:
1901{ 3070{
1902 struct coro *coro; 3071 struct coro *coro;
1903 for (coro = coro_first; coro; coro = coro->next) 3072 for (coro = coro_first; coro; coro = coro->next)
1904 if (coro->hv) 3073 if (coro->hv)
… …
1911 eval = 1 3080 eval = 1
1912 CODE: 3081 CODE:
1913{ 3082{
1914 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1915 { 3084 {
1916 struct coro temp; 3085 struct coro *current = SvSTATE_current;
1917 3086
1918 if (!(coro->flags & CF_RUNNING)) 3087 if (current != coro)
1919 { 3088 {
1920 PUTBACK; 3089 PUTBACK;
1921 save_perl (aTHX_ &temp); 3090 save_perl (aTHX_ current);
1922 load_perl (aTHX_ coro); 3091 load_perl (aTHX_ coro);
3092 SPAGAIN;
1923 } 3093 }
1924 3094
1925 {
1926 dSP;
1927 ENTER;
1928 SAVETMPS;
1929 PUTBACK;
1930 PUSHSTACK; 3095 PUSHSTACK;
3096
1931 PUSHMARK (SP); 3097 PUSHMARK (SP);
3098 PUTBACK;
1932 3099
1933 if (ix) 3100 if (ix)
1934 eval_sv (coderef, 0); 3101 eval_sv (coderef, 0);
1935 else 3102 else
1936 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3103 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1937 3104
3105 SPAGAIN;
1938 POPSTACK; 3106 POPSTACK;
1939 SPAGAIN;
1940 FREETMPS;
1941 LEAVE;
1942 PUTBACK;
1943 }
1944 3107
1945 if (!(coro->flags & CF_RUNNING)) 3108 if (current != coro)
1946 { 3109 {
3110 PUTBACK;
1947 save_perl (aTHX_ coro); 3111 save_perl (aTHX_ coro);
1948 load_perl (aTHX_ &temp); 3112 load_perl (aTHX_ current);
1949 SPAGAIN; 3113 SPAGAIN;
1950 } 3114 }
1951 } 3115 }
1952} 3116}
1953 3117
… …
1963 RETVAL = boolSV (coro->flags & ix); 3127 RETVAL = boolSV (coro->flags & ix);
1964 OUTPUT: 3128 OUTPUT:
1965 RETVAL 3129 RETVAL
1966 3130
1967void 3131void
3132throw (Coro::State self, SV *throw = &PL_sv_undef)
3133 PROTOTYPE: $;$
3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
3138 SvREFCNT_dec (*throwp);
3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
3141
3142void
1968api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3144 PROTOTYPE: $;$
3145 C_ARGS: aTHX_ coro, flags
1969 3146
1970SV * 3147SV *
1971has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
1972 PROTOTYPE: $ 3149 PROTOTYPE: $
1973 CODE: 3150 CODE:
1974 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1975 OUTPUT: 3153 OUTPUT:
1976 RETVAL 3154 RETVAL
1977 3155
1978int 3156int
1979is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
1981 CODE: 3159 CODE:
1982 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3160 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1983 OUTPUT: 3161 OUTPUT:
1984 RETVAL 3162 RETVAL
1985 3163
1986IV 3164UV
1987rss (Coro::State coro) 3165rss (Coro::State coro)
1988 PROTOTYPE: $ 3166 PROTOTYPE: $
1989 ALIAS: 3167 ALIAS:
1990 usecount = 1 3168 usecount = 1
1991 CODE: 3169 CODE:
… …
1997 OUTPUT: 3175 OUTPUT:
1998 RETVAL 3176 RETVAL
1999 3177
2000void 3178void
2001force_cctx () 3179force_cctx ()
3180 PROTOTYPE:
2002 CODE: 3181 CODE:
2003 struct coro *coro = SvSTATE (coro_current);
2004 coro->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2005
2006void
2007throw (Coro::State self, SV *throw = &PL_sv_undef)
2008 PROTOTYPE: $;$
2009 CODE:
2010 SvREFCNT_dec (self->throw);
2011 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2012 3183
2013void 3184void
2014swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2015 PROTOTYPE: $ 3186 PROTOTYPE: $
2016 ALIAS: 3187 ALIAS:
2017 swap_defav = 1 3188 swap_defav = 1
2018 CODE: 3189 CODE:
2019 if (!self->slot) 3190 if (!self->slot)
2020 croak ("cannot swap state with coroutine that has no saved state"); 3191 croak ("cannot swap state with coroutine that has no saved state,");
2021 else 3192 else
2022 { 3193 {
2023 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3194 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2024 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2025 3196
2026 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2027 } 3198 }
2028 3199
3200
2029MODULE = Coro::State PACKAGE = Coro 3201MODULE = Coro::State PACKAGE = Coro
2030 3202
2031BOOT: 3203BOOT:
2032{ 3204{
2033 int i; 3205 int i;
2034 3206
2035 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2036 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3207 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2037 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3208 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2038 3209 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3210 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2039 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3211 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2040 SvREADONLY_on (coro_current); 3212 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3213 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3214 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3215 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3216
3217 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3218 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3219 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3220 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2041 3221
2042 coro_stash = gv_stashpv ("Coro", TRUE); 3222 coro_stash = gv_stashpv ("Coro", TRUE);
2043 3223
2044 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3224 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2045 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3225 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2050 3230
2051 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3231 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2052 coro_ready[i] = newAV (); 3232 coro_ready[i] = newAV ();
2053 3233
2054 { 3234 {
2055 SV *sv = perl_get_sv ("Coro::API", TRUE); 3235 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2056 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2057 3236
2058 coroapi.schedule = api_schedule; 3237 coroapi.schedule = api_schedule;
3238 coroapi.schedule_to = api_schedule_to;
2059 coroapi.cede = api_cede; 3239 coroapi.cede = api_cede;
2060 coroapi.cede_notself = api_cede_notself; 3240 coroapi.cede_notself = api_cede_notself;
2061 coroapi.ready = api_ready; 3241 coroapi.ready = api_ready;
2062 coroapi.is_ready = api_is_ready; 3242 coroapi.is_ready = api_is_ready;
2063 coroapi.nready = &coro_nready; 3243 coroapi.nready = coro_nready;
2064 coroapi.current = coro_current; 3244 coroapi.current = coro_current;
2065 3245
2066 GCoroAPI = &coroapi; 3246 /*GCoroAPI = &coroapi;*/
2067 sv_setiv (sv, (IV)&coroapi); 3247 sv_setiv (sv, (IV)&coroapi);
2068 SvREADONLY_on (sv); 3248 SvREADONLY_on (sv);
2069 } 3249 }
2070} 3250}
3251
3252void
3253terminate (...)
3254 CODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3256
3257void
3258schedule (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3261
3262void
3263schedule_to (...)
3264 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3266
3267void
3268cede_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3271
3272void
3273cede (...)
3274 CODE:
3275 CORO_EXECUTE_SLF_XS (slf_init_cede);
3276
3277void
3278cede_notself (...)
3279 CODE:
3280 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3281
3282void
3283_cancel (Coro::State self)
3284 CODE:
3285 coro_state_destroy (aTHX_ self);
3286 coro_call_on_destroy (aTHX_ self);
2071 3287
2072void 3288void
2073_set_current (SV *current) 3289_set_current (SV *current)
2074 PROTOTYPE: $ 3290 PROTOTYPE: $
2075 CODE: 3291 CODE:
… …
2078 3294
2079void 3295void
2080_set_readyhook (SV *hook) 3296_set_readyhook (SV *hook)
2081 PROTOTYPE: $ 3297 PROTOTYPE: $
2082 CODE: 3298 CODE:
2083 LOCK;
2084 SvREFCNT_dec (coro_readyhook); 3299 SvREFCNT_dec (coro_readyhook);
2085 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3300 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2086 UNLOCK;
2087 3301
2088int 3302int
2089prio (Coro::State coro, int newprio = 0) 3303prio (Coro::State coro, int newprio = 0)
3304 PROTOTYPE: $;$
2090 ALIAS: 3305 ALIAS:
2091 nice = 1 3306 nice = 1
2092 CODE: 3307 CODE:
2093{ 3308{
2094 RETVAL = coro->prio; 3309 RETVAL = coro->prio;
… …
2109 3324
2110SV * 3325SV *
2111ready (SV *self) 3326ready (SV *self)
2112 PROTOTYPE: $ 3327 PROTOTYPE: $
2113 CODE: 3328 CODE:
2114 RETVAL = boolSV (api_ready (self)); 3329 RETVAL = boolSV (api_ready (aTHX_ self));
2115 OUTPUT: 3330 OUTPUT:
2116 RETVAL 3331 RETVAL
2117 3332
2118int 3333int
2119nready (...) 3334nready (...)
… …
2121 CODE: 3336 CODE:
2122 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2123 OUTPUT: 3338 OUTPUT:
2124 RETVAL 3339 RETVAL
2125 3340
2126# for async_pool speedup
2127void 3341void
2128_pool_1 (SV *cb) 3342_pool_handler (...)
2129 CODE: 3343 CODE:
2130{ 3344 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2131 struct coro *coro = SvSTATE (coro_current);
2132 HV *hv = (HV *)SvRV (coro_current);
2133 AV *defav = GvAV (PL_defgv);
2134 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2135 AV *invoke_av;
2136 int i, len;
2137 3345
2138 if (!invoke) 3346void
3347async_pool (SV *cv, ...)
3348 PROTOTYPE: &@
3349 PPCODE:
3350{
3351 HV *hv = (HV *)av_pop (av_async_pool);
3352 AV *av = newAV ();
3353 SV *cb = ST (0);
3354 int i;
3355
3356 av_extend (av, items - 2);
3357 for (i = 1; i < items; ++i)
3358 av_push (av, SvREFCNT_inc_NN (ST (i)));
3359
3360 if ((SV *)hv == &PL_sv_undef)
2139 { 3361 {
2140 SV *old = PL_diehook; 3362 PUSHMARK (SP);
2141 PL_diehook = 0; 3363 EXTEND (SP, 2);
2142 SvREFCNT_dec (old); 3364 PUSHs (sv_Coro);
2143 croak ("\3async_pool terminate\2\n"); 3365 PUSHs ((SV *)cv_pool_handler);
3366 PUTBACK;
3367 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3368 SPAGAIN;
3369
3370 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2144 } 3371 }
2145 3372
2146 SvREFCNT_dec (coro->saved_deffh);
2147 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2148
2149 hv_store (hv, "desc", sizeof ("desc") - 1,
2150 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2151
2152 invoke_av = (AV *)SvRV (invoke);
2153 len = av_len (invoke_av);
2154
2155 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2156
2157 if (len > 0)
2158 { 3373 {
2159 av_fill (defav, len - 1); 3374 struct coro *coro = SvSTATE_hv (hv);
2160 for (i = 0; i < len; ++i) 3375
2161 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3376 assert (!coro->invoke_cb);
3377 assert (!coro->invoke_av);
3378 coro->invoke_cb = SvREFCNT_inc (cb);
3379 coro->invoke_av = av;
2162 } 3380 }
2163 3381
3382 api_ready (aTHX_ (SV *)hv);
3383
3384 if (GIMME_V != G_VOID)
3385 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3386 else
2164 SvREFCNT_dec (invoke); 3387 SvREFCNT_dec (hv);
2165} 3388}
2166 3389
2167void 3390SV *
2168_pool_2 (SV *cb) 3391rouse_cb ()
3392 PROTOTYPE:
2169 CODE: 3393 CODE:
2170{ 3394 RETVAL = coro_new_rouse_cb (aTHX);
2171 struct coro *coro = SvSTATE (coro_current);
2172
2173 sv_setsv (cb, &PL_sv_undef);
2174
2175 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2176 coro->saved_deffh = 0;
2177
2178 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2179 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2180 {
2181 SV *old = PL_diehook;
2182 PL_diehook = 0;
2183 SvREFCNT_dec (old);
2184 croak ("\3async_pool terminate\2\n");
2185 }
2186
2187 av_clear (GvAV (PL_defgv));
2188 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2189 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2190
2191 coro->prio = 0;
2192
2193 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2194 api_trace (coro_current, 0);
2195
2196 av_push (av_async_pool, newSVsv (coro_current));
2197}
2198
2199#if 0
2200
2201void
2202_generator_call (...)
2203 PROTOTYPE: @
2204 PPCODE:
2205 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2206 xxxx
2207 abort ();
2208
2209SV *
2210gensub (SV *sub, ...)
2211 PROTOTYPE: &;@
2212 CODE:
2213{
2214 struct coro *coro;
2215 MAGIC *mg;
2216 CV *xcv;
2217 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2218 int i;
2219
2220 CvGV (ncv) = CvGV (cv);
2221 CvFILE (ncv) = CvFILE (cv);
2222
2223 Newz (0, coro, 1, struct coro);
2224 coro->args = newAV ();
2225 coro->flags = CF_NEW;
2226
2227 av_extend (coro->args, items - 1);
2228 for (i = 1; i < items; i++)
2229 av_push (coro->args, newSVsv (ST (i)));
2230
2231 CvISXSUB_on (ncv);
2232 CvXSUBANY (ncv).any_ptr = (void *)coro;
2233
2234 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2235
2236 CvXSUB (ncv) = CvXSUB (xcv);
2237 CvANON_on (ncv);
2238
2239 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2240 RETVAL = newRV_noinc ((SV *)ncv);
2241}
2242 OUTPUT: 3395 OUTPUT:
2243 RETVAL 3396 RETVAL
2244 3397
2245#endif
2246
2247
2248MODULE = Coro::State PACKAGE = Coro::AIO
2249
2250void 3398void
2251_get_state (SV *self) 3399rouse_wait (...)
3400 PROTOTYPE: ;$
2252 PPCODE: 3401 PPCODE:
2253{ 3402 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2254 AV *defav = GvAV (PL_defgv);
2255 AV *av = newAV ();
2256 int i;
2257 SV *data_sv = newSV (sizeof (struct io_state));
2258 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2259 SvCUR_set (data_sv, sizeof (struct io_state));
2260 SvPOK_only (data_sv);
2261
2262 data->errorno = errno;
2263 data->laststype = PL_laststype;
2264 data->laststatval = PL_laststatval;
2265 data->statcache = PL_statcache;
2266
2267 av_extend (av, AvFILLp (defav) + 1 + 1);
2268
2269 for (i = 0; i <= AvFILLp (defav); ++i)
2270 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2271
2272 av_push (av, data_sv);
2273
2274 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2275
2276 api_ready (self);
2277}
2278 3403
2279void 3404void
2280_set_state (SV *state) 3405on_enter (SV *block)
3406 ALIAS:
3407 on_leave = 1
2281 PROTOTYPE: $ 3408 PROTOTYPE: &
2282 PPCODE: 3409 CODE:
2283{ 3410{
3411 struct coro *coro = SvSTATE_current;
3412 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3413
3414 block = (SV *)coro_sv_2cv (block);
3415
3416 if (!*avp)
3417 *avp = newAV ();
3418
3419 av_push (*avp, SvREFCNT_inc (block));
3420
3421 if (!ix)
3422 on_enterleave_call (aTHX_ block);
3423
3424 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3425 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3426 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3427}
3428
3429
3430MODULE = Coro::State PACKAGE = PerlIO::cede
3431
3432BOOT:
3433 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3434
3435
3436MODULE = Coro::State PACKAGE = Coro::Semaphore
3437
3438SV *
3439new (SV *klass, SV *count = 0)
3440 CODE:
3441 RETVAL = sv_bless (
3442 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3443 GvSTASH (CvGV (cv))
3444 );
3445 OUTPUT:
3446 RETVAL
3447
3448# helper for Coro::Channel
3449SV *
3450_alloc (int count)
3451 CODE:
3452 RETVAL = coro_waitarray_new (aTHX_ count);
3453 OUTPUT:
3454 RETVAL
3455
3456SV *
3457count (SV *self)
3458 CODE:
3459 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3460 OUTPUT:
3461 RETVAL
3462
3463void
3464up (SV *self, int adjust = 1)
3465 ALIAS:
3466 adjust = 1
3467 CODE:
3468 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3469
3470void
3471down (...)
3472 CODE:
3473 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3474
3475void
3476wait (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3479
3480void
3481try (SV *self)
3482 PPCODE:
3483{
3484 AV *av = (AV *)SvRV (self);
3485 SV *count_sv = AvARRAY (av)[0];
3486 IV count = SvIVX (count_sv);
3487
3488 if (count > 0)
3489 {
3490 --count;
3491 SvIVX (count_sv) = count;
3492 XSRETURN_YES;
3493 }
3494 else
3495 XSRETURN_NO;
3496}
3497
3498void
3499waiters (SV *self)
3500 PPCODE:
3501{
3502 AV *av = (AV *)SvRV (self);
3503 int wcount = AvFILLp (av) + 1 - 1;
3504
3505 if (GIMME_V == G_SCALAR)
3506 XPUSHs (sv_2mortal (newSViv (wcount)));
3507 else
3508 {
3509 int i;
3510 EXTEND (SP, wcount);
3511 for (i = 1; i <= wcount; ++i)
3512 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3513 }
3514}
3515
3516MODULE = Coro::State PACKAGE = Coro::Signal
3517
3518SV *
3519new (SV *klass)
3520 CODE:
3521 RETVAL = sv_bless (
3522 coro_waitarray_new (aTHX_ 0),
3523 GvSTASH (CvGV (cv))
3524 );
3525 OUTPUT:
3526 RETVAL
3527
3528void
3529wait (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3532
3533void
3534broadcast (SV *self)
3535 CODE:
3536{
2284 AV *av = (AV *)SvRV (state); 3537 AV *av = (AV *)SvRV (self);
2285 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3538 coro_signal_wake (aTHX_ av, AvFILLp (av));
2286 int i; 3539}
2287 3540
2288 errno = data->errorno; 3541void
2289 PL_laststype = data->laststype; 3542send (SV *self)
2290 PL_laststatval = data->laststatval; 3543 CODE:
2291 PL_statcache = data->statcache; 3544{
3545 AV *av = (AV *)SvRV (self);
2292 3546
2293 EXTEND (SP, AvFILLp (av)); 3547 if (AvFILLp (av))
2294 for (i = 0; i < AvFILLp (av); ++i) 3548 coro_signal_wake (aTHX_ av, 1);
2295 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3549 else
3550 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2296} 3551}
3552
3553IV
3554awaited (SV *self)
3555 CODE:
3556 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3557 OUTPUT:
3558 RETVAL
2297 3559
2298 3560
2299MODULE = Coro::State PACKAGE = Coro::AnyEvent 3561MODULE = Coro::State PACKAGE = Coro::AnyEvent
2300 3562
2301BOOT: 3563BOOT:
2302 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3564 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2303 3565
2304SV * 3566void
2305_schedule (...) 3567_schedule (...)
2306 PROTOTYPE: @
2307 CODE: 3568 CODE:
2308{ 3569{
2309 static int incede; 3570 static int incede;
2310 3571
2311 api_cede_notself (); 3572 api_cede_notself (aTHX);
2312 3573
2313 ++incede; 3574 ++incede;
2314 while (coro_nready >= incede && api_cede ()) 3575 while (coro_nready >= incede && api_cede (aTHX))
2315 ; 3576 ;
2316 3577
2317 sv_setsv (sv_activity, &PL_sv_undef); 3578 sv_setsv (sv_activity, &PL_sv_undef);
2318 if (coro_nready >= incede) 3579 if (coro_nready >= incede)
2319 { 3580 {
2320 PUSHMARK (SP); 3581 PUSHMARK (SP);
2321 PUTBACK; 3582 PUTBACK;
2322 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3583 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2323 SPAGAIN;
2324 } 3584 }
2325 3585
2326 --incede; 3586 --incede;
2327} 3587}
2328 3588
2329 3589
2330MODULE = Coro::State PACKAGE = PerlIO::cede 3590MODULE = Coro::State PACKAGE = Coro::AIO
2331 3591
2332BOOT: 3592void
2333 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3593_register (char *target, char *proto, SV *req)
3594 CODE:
3595{
3596 CV *req_cv = coro_sv_2cv (aTHX_ req);
3597 /* newXSproto doesn't return the CV on 5.8 */
3598 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3599 sv_setpv ((SV *)slf_cv, proto);
3600 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3601}
3602

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