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Comparing Coro/Coro/State.xs (file contents):
Revision 1.208 by root, Wed Oct 10 00:53:18 2007 UTC vs.
Revision 1.310 by root, Wed Nov 19 16:01:32 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48 55
49#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
71# ifndef IS_PADCONST 78# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
73# endif 80# endif
74#endif 81#endif
75 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
76/* 5.8.7 */ 104/* 5.8.7 */
77#ifndef SvRV_set 105#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 107#endif
80 108
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
91#endif 111#endif
92 112
93#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 120#endif
101 121
102/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
104#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
105#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
106 131
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 133
109#if __GNUC__ >= 3 134#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
113#else 138#else
114# define attribute(x) 139# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
117#endif 142#endif
118 143
119#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
121 146
122#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
123 148
124#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
125 151
126#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 153# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 155# endif
156#endif
134 157
135#define strpair(const) const, sizeof (const) - 1 158static double (*nvtime)(); /* so why doesn't it take void? */
136 159
137/* helper storage struct for Coro::AIO */ 160/* we hijack an hopefully unused CV flag for our purposes */
138struct io_state 161#define CVf_SLF 0x4000
139{ 162static OP *pp_slf (pTHX);
140 int errorno;
141 I32 laststype;
142 int laststatval;
143 Stat_t statcache;
144};
145 163
164static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 168static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
152 171
153static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
155 174static SV *rv_diehook;
175static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 177
160/* async_pool helper stuff */ 178/* async_pool helper stuff */
161static SV *sv_pool_rss; 179static SV *sv_pool_rss;
162static SV *sv_pool_size; 180static SV *sv_pool_size;
163static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
164 185
165static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
167 188
168enum { 189enum {
… …
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 196};
176 197
177/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 199typedef struct coro_cctx
200{
179 struct coro_cctx *next; 201 struct coro_cctx *next;
180 202
181 /* the stack */ 203 /* the stack */
182 void *sptr; 204 void *sptr;
183 size_t ssize; 205 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 210 JMPENV *top_env;
189 coro_context cctx; 211 coro_context cctx;
190 212
213 U32 gen;
191#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
192 int valgrind_id; 215 int valgrind_id;
193#endif 216#endif
194 unsigned char flags; 217 unsigned char flags;
195} coro_cctx; 218} coro_cctx;
… …
200 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
202}; 225};
203 226
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 228typedef struct
229{
206 SV *defsv; 230 SV *defsv;
207 AV *defav; 231 AV *defav;
208 SV *errsv; 232 SV *errsv;
209 SV *irsgv; 233 SV *irsgv;
210#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
214 238
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 240
217/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
218struct coro { 242struct coro {
219 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 244 coro_cctx *cctx;
221 245
222 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 248 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
225 250
251 CV *startcv; /* the CV to execute */
226 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
230 257
231 /* statistics */ 258 /* statistics */
232 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
233 260
234 /* coro process data */ 261 /* coro process data */
235 int prio; 262 int prio;
236 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
237 265
238 /* async_pool */ 266 /* async_pool */
239 SV *saved_deffh; 267 SV *saved_deffh;
240 268
241 /* linked list */ 269 /* linked list */
242 struct coro *next, *prev; 270 struct coro *next, *prev;
243}; 271};
244 272
245typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */
247 280
248/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
249 282
250#define PRIO_MAX 3 283#define PRIO_MAX 3
251#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
254#define PRIO_IDLE -3 287#define PRIO_IDLE -3
255#define PRIO_MIN -4 288#define PRIO_MIN -4
256 289
257/* for Coro.pm */ 290/* for Coro.pm */
258static SV *coro_current; 291static SV *coro_current;
292static SV *coro_readyhook;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
260static int coro_nready; 294static CV *cv_coro_run;
261static struct coro *coro_first; 295static struct coro *coro_first;
296#define coro_nready coroapi.nready
262 297
263/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
264 299
265static SV * 300static SV *
266coro_get_sv (const char *name, int create) 301coro_get_sv (pTHX_ const char *name, int create)
267{ 302{
268#if PERL_VERSION_ATLEAST (5,9,0) 303#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 305 get_sv (name, create);
271#endif 306#endif
272 return get_sv (name, create); 307 return get_sv (name, create);
273} 308}
274 309
275static AV * 310static AV *
276coro_get_av (const char *name, int create) 311coro_get_av (pTHX_ const char *name, int create)
277{ 312{
278#if PERL_VERSION_ATLEAST (5,9,0) 313#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 315 get_av (name, create);
281#endif 316#endif
282 return get_av (name, create); 317 return get_av (name, create);
283} 318}
284 319
285static HV * 320static HV *
286coro_get_hv (const char *name, int create) 321coro_get_hv (pTHX_ const char *name, int create)
287{ 322{
288#if PERL_VERSION_ATLEAST (5,9,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 325 get_hv (name, create);
291#endif 326#endif
292 return get_hv (name, create); 327 return get_hv (name, create);
293} 328}
294 329
330/* may croak */
331INLINE CV *
332coro_sv_2cv (SV *sv)
333{
334 HV *st;
335 GV *gvp;
336 return sv_2cv (sv, &st, &gvp, 0);
337}
338
295static AV * 339static AV *
296coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
297{ 341{
298 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
300 344
301 newpadlist = newAV (); 345 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 349#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 351#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 353 --AvFILLp (padlist);
310 354
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
312 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
313 357
314 return newpadlist; 358 return newpadlist;
315} 359}
316 360
… …
346 390
347 /* casting is fun. */ 391 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
350 394
351 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 396
353 return 0; 397 return 0;
354} 398}
355 399
400#define CORO_MAGIC_type_cv 26
356#define PERL_MAGIC_coro PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
357 402
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
359 407
360#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
361 SvMAGIC (cv) \ 410 ? SvMAGIC (sv) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 411 : mg_find (sv, type))
363 ? SvMAGIC (cv) \ 412
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 413#define CORO_MAGIC(sv, type) \
414 (expect_true (SvMAGIC (sv)) \
415 ? CORO_MAGIC_NN (sv, type) \
365 : 0 416 : 0)
366 417
367static struct coro * 418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
420
421INLINE struct coro *
368SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
369{ 423{
370 HV *stash; 424 HV *stash;
371 MAGIC *mg; 425 MAGIC *mg;
372 426
… …
382 /* very slow, but rare, check */ 436 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 437 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required"); 438 croak ("Coro::State object required");
385 } 439 }
386 440
387 mg = CORO_MAGIC (coro); 441 mg = CORO_MAGIC_state (coro);
388 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
389} 443}
390 444
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
450
393/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
394static void 452static void
395get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
396{ 454{
397 MAGIC *mg = CORO_MAGIC (cv); 455 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 456 AV *av;
399 457
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 458 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 459 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 460 else
403 { 461 {
404#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 463 /* this is probably cleaner? but also slower! */
464 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
410#else 469#else
411 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
414} 473}
415 474
416static void 475static void
417put_padlist (pTHX_ CV *cv) 476put_padlist (pTHX_ CV *cv)
418{ 477{
419 MAGIC *mg = CORO_MAGIC (cv); 478 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 479 AV *av;
421 480
422 if (expect_false (!mg)) 481 if (expect_false (!mg))
423 { 482 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426 mg->mg_virtual = &vtbl_coro;
427 mg->mg_obj = (SV *)newAV ();
428 }
429 483
430 av = (AV *)mg->mg_obj; 484 av = (AV *)mg->mg_obj;
431 485
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 486 if (expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 487 av_extend (av, AvMAX (av) + 1);
… …
451 GvSV (irsgv) = slot->irsgv; 505 GvSV (irsgv) = slot->irsgv;
452 506
453 #define VAR(name,type) PL_ ## name = slot->name; 507 #define VAR(name,type) PL_ ## name = slot->name;
454 # include "state.h" 508 # include "state.h"
455 #undef VAR 509 #undef VAR
456
457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459 510
460 { 511 {
461 dSP; 512 dSP;
462 513
463 CV *cv; 514 CV *cv;
… …
470 CvPADLIST (cv) = (AV *)POPs; 521 CvPADLIST (cv) = (AV *)POPs;
471 } 522 }
472 523
473 PUTBACK; 524 PUTBACK;
474 } 525 }
526
527 slf_frame = c->slf_frame;
528 CORO_THROW = c->except;
475} 529}
476 530
477static void 531static void
478save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
479{ 533{
534 c->except = CORO_THROW;
535 c->slf_frame = slf_frame;
536
480 { 537 {
481 dSP; 538 dSP;
482 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 540 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 541 PERL_SI *top_si = PL_curstackinfo;
… …
502 559
503 if (expect_true (CvDEPTH (cv))) 560 if (expect_true (CvDEPTH (cv)))
504 { 561 {
505 EXTEND (SP, 3); 562 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 563 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 564 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 565 PUSHs ((SV *)cv);
509 566
510 CvDEPTH (cv) = 0; 567 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 568 get_padlist (aTHX_ cv);
512 } 569 }
… …
551 #undef VAR 608 #undef VAR
552 } 609 }
553} 610}
554 611
555/* 612/*
556 * allocate various perl stacks. This is an exact copy 613 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
560 */ 617 */
561#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
563#else 620#else
564static void 621static void
565coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
566{ 623{
567 PL_curstackinfo = new_stackinfo(32, 8); 624 PL_curstackinfo = new_stackinfo(32, 8);
… …
592 649
593 New(54,PL_savestack,24,ANY); 650 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 651 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 652 PL_savestack_max = 24;
596 653
597#if !PERL_VERSION_ATLEAST (5,9,0) 654#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 655 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 656 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 657 PL_retstack_max = 4;
601#endif 658#endif
602} 659}
… …
604 661
605/* 662/*
606 * destroy the stacks, the callchain etc... 663 * destroy the stacks, the callchain etc...
607 */ 664 */
608static void 665static void
609coro_destroy_stacks (pTHX) 666coro_destruct_stacks (pTHX)
610{ 667{
611 while (PL_curstackinfo->si_next) 668 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 669 PL_curstackinfo = PL_curstackinfo->si_next;
613 670
614 while (PL_curstackinfo) 671 while (PL_curstackinfo)
… …
625 682
626 Safefree (PL_tmps_stack); 683 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 684 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 685 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 686 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 687#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 688 Safefree (PL_retstack);
632#endif 689#endif
633} 690}
634 691
635static size_t 692static size_t
… …
651 #undef VAR 708 #undef VAR
652 } 709 }
653 else 710 else
654 slot = coro->slot; 711 slot = coro->slot;
655 712
713 if (slot)
714 {
656 rss += sizeof (slot->curstackinfo); 715 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 716 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 717 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 718 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 719 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 720 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 721 rss += slot->savestack_max * sizeof (ANY);
663 722
664#if !PERL_VERSION_ATLEAST (5,9,0) 723#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 724 rss += slot->retstack_max * sizeof (OP *);
666#endif 725#endif
726 }
667 } 727 }
668 728
669 return rss; 729 return rss;
670} 730}
671 731
672/** coroutine stack handling ************************************************/ 732/** coroutine stack handling ************************************************/
673 733
734static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
735static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
736static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
737
738/* apparently < 5.8.8 */
739#ifndef MgPV_nolen_const
740#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
741 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
742 (const char*)(mg)->mg_ptr)
743#endif
744
745/*
746 * This overrides the default magic get method of %SIG elements.
747 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
748 * and instead of tryign to save and restore the hash elements, we just provide
749 * readback here.
750 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
751 * not expecting this to actually change the hook. This is a potential problem
752 * when a schedule happens then, but we ignore this.
753 */
674static void 754static int
755coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
756{
757 const char *s = MgPV_nolen_const (mg);
758
759 if (*s == '_')
760 {
761 SV **svp = 0;
762
763 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
764 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
765
766 if (svp)
767 {
768 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
769 return 0;
770 }
771 }
772
773 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
774}
775
776static int
777coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
778{
779 const char *s = MgPV_nolen_const (mg);
780
781 if (*s == '_')
782 {
783 SV **svp = 0;
784
785 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
786 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
787
788 if (svp)
789 {
790 SV *old = *svp;
791 *svp = 0;
792 SvREFCNT_dec (old);
793 return 0;
794 }
795 }
796
797 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
798}
799
800static int
801coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
802{
803 const char *s = MgPV_nolen_const (mg);
804
805 if (*s == '_')
806 {
807 SV **svp = 0;
808
809 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
810 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
811
812 if (svp)
813 {
814 SV *old = *svp;
815 *svp = newSVsv (sv);
816 SvREFCNT_dec (old);
817 return 0;
818 }
819 }
820
821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
822}
823
824static void
825prepare_nop (pTHX_ struct coro_transfer_args *ta)
826{
827 /* kind of mega-hacky, but works */
828 ta->next = ta->prev = (struct coro *)ta;
829}
830
831static int
832slf_check_nop (pTHX_ struct CoroSLF *frame)
833{
834 return 0;
835}
836
837static UNOP coro_setup_op;
838
839static void NOINLINE /* noinline to keep it out of the transfer fast path */
675coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
676{ 841{
677 /* 842 /*
678 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
679 */ 844 */
… …
686 PL_curpm = 0; 851 PL_curpm = 0;
687 PL_curpad = 0; 852 PL_curpad = 0;
688 PL_localizing = 0; 853 PL_localizing = 0;
689 PL_dirty = 0; 854 PL_dirty = 0;
690 PL_restartop = 0; 855 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 856#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 857 PL_parser = 0;
858#endif
859
860 /* recreate the die/warn hooks */
861 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
862 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693 863
694 GvSV (PL_defgv) = newSV (0); 864 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 865 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 866 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 867 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698 PL_rs = newSVsv (GvSV (irsgv)); 868 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 870
701 { 871 {
702 dSP; 872 dSP;
703 LOGOP myop; 873 UNOP myop;
704 874
705 Zero (&myop, 1, LOGOP); 875 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
707 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
708 879
709 PUSHMARK (SP); 880 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
711 PUTBACK; 882 PUTBACK;
712 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN;
715 } 885 }
716 886
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 887 /* this newly created coroutine might be run on an existing cctx which most
718} 888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
889 */
890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
719 892
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM;
896 coro_setup_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */
898
899 PL_op = (OP *)&coro_setup_op;
900
901 /* copy throw, in case it was set before coro_setup */
902 CORO_THROW = coro->except;
903}
904
720static void 905static void
721coro_destroy (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
722{ 907{
723 if (!IN_DESTRUCT) 908 if (!IN_DESTRUCT)
724 { 909 {
725 /* restore all saved variables and stuff */ 910 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 911 LEAVE_SCOPE (0);
… …
746 931
747 SvREFCNT_dec (PL_diehook); 932 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook); 933 SvREFCNT_dec (PL_warnhook);
749 934
750 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
752 937
753 coro_destroy_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
754} 939}
755 940
756static void 941INLINE void
757free_coro_mortal (pTHX) 942free_coro_mortal (pTHX)
758{ 943{
759 if (expect_true (coro_mortal)) 944 if (expect_true (coro_mortal))
760 { 945 {
761 SvREFCNT_dec (coro_mortal); 946 SvREFCNT_dec (coro_mortal);
… …
766static int 951static int
767runops_trace (pTHX) 952runops_trace (pTHX)
768{ 953{
769 COP *oldcop = 0; 954 COP *oldcop = 0;
770 int oldcxix = -2; 955 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
773 958
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 { 960 {
776 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 980 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 981 : bot;
797 982
798 av_extend (av, top - bot); 983 av_extend (av, top - bot);
799 while (bot < top) 984 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 985 av_push (av, SvREFCNT_inc_NN (*bot++));
801 986
802 PL_runops = RUNOPS_DEFAULT; 987 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 988 ENTER;
804 SAVETMPS; 989 SAVETMPS;
805 EXTEND (SP, 3); 990 EXTEND (SP, 3);
806 PUSHMARK (SP); 991 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 992 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 993 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 994 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 995 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 996 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 997 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 998 SPAGAIN;
814 FREETMPS; 999 FREETMPS;
815 LEAVE; 1000 LEAVE;
816 PL_runops = runops_trace; 1001 PL_runops = runops_trace;
… …
843 SAVETMPS; 1028 SAVETMPS;
844 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
845 PUSHMARK (SP); 1030 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 1032 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1033 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 1034 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1037 SPAGAIN;
853 FREETMPS; 1038 FREETMPS;
854 LEAVE; 1039 LEAVE;
855 PL_runops = runops_trace; 1040 PL_runops = runops_trace;
… …
869 PL_runops = RUNOPS_DEFAULT; 1054 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1055 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1056 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1057 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1058 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1059 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1060 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1061 SPAGAIN;
877 FREETMPS; 1062 FREETMPS;
878 LEAVE; 1063 LEAVE;
879 PL_runops = runops_trace; 1064 PL_runops = runops_trace;
… …
885 1070
886 TAINT_NOT; 1071 TAINT_NOT;
887 return 0; 1072 return 0;
888} 1073}
889 1074
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static struct coro_cctx *cctx_ssl_cctx;
891/* _cctx_init should be careful, as it could be called at almost any time */ 1076static struct CoroSLF cctx_ssl_frame;
892/* during execution of a perl program */ 1077
1078static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0;
1083}
1084
1085static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{
1088 *frame = cctx_ssl_frame;
1089
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091}
1092
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
893static void NOINLINE 1094static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
895{ 1096{
896 dSP;
897 LOGOP myop;
898
899 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
900 1098
901 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
902 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
903 1101
904 Zero (&myop, 1, LOGOP); 1102 /* we already must be executing an SLF op, there is no other valid way
905 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
907 1106
908 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
909 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1109 cctx_ssl_frame = slf_frame;
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
912 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
913 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1113}
915 SPAGAIN; 1114
1115/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void
1117transfer_tail (pTHX)
1118{
1119 free_coro_mortal (aTHX);
916} 1120}
917 1121
918/* 1122/*
919 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
920 */ 1124 */
921static void 1125static void
922cctx_run (void *arg) 1126cctx_run (void *arg)
923{ 1127{
1128#ifdef USE_ITHREADS
1129# if CORO_PTHREAD
1130 PERL_SET_CONTEXT (coro_thx);
1131# endif
1132#endif
1133 {
924 dTHX; 1134 dTHX;
925 1135
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1136 /* normally we would need to skip the entersub here */
927 UNLOCK; 1137 /* not doing so will re-execute it, which is exactly what we want */
928
929 /* we now skip the entersub that lead to transfer() */
930 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
931 1139
932 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
934 1142
1143 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX);
1145
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1146 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1148 perl_run (PL_curinterp);
938
939 /* 1149 /*
1150 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these
1152 */
1153
1154 /*
940 * If perl-run returns we assume exit() was being called or the coro 1155 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug) 1156 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the 1157 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main" 1158 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1159 * coroutine as Coro has no such concept
945 */ 1160 */
946 PL_top_env = main_top_env; 1161 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 }
948} 1164}
949 1165
950static coro_cctx * 1166static coro_cctx *
951cctx_new () 1167cctx_new ()
952{ 1168{
953 coro_cctx *cctx; 1169 coro_cctx *cctx;
1170
1171 ++cctx_count;
1172 New (0, cctx, 1, coro_cctx);
1173
1174 cctx->gen = cctx_gen;
1175 cctx->flags = 0;
1176 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1177
1178 return cctx;
1179}
1180
1181/* create a new cctx only suitable as source */
1182static coro_cctx *
1183cctx_new_empty ()
1184{
1185 coro_cctx *cctx = cctx_new ();
1186
1187 cctx->sptr = 0;
1188 coro_create (&cctx->cctx, 0, 0, 0, 0);
1189
1190 return cctx;
1191}
1192
1193/* create a new cctx suitable as destination/running a perl interpreter */
1194static coro_cctx *
1195cctx_new_run ()
1196{
1197 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1198 void *stack_start;
955 size_t stack_size; 1199 size_t stack_size;
956 1200
957 ++cctx_count;
958
959 Newz (0, cctx, 1, coro_cctx);
960
961#if HAVE_MMAP 1201#if HAVE_MMAP
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1202 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1203 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1204 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1205
966 if (cctx->sptr != (void *)-1) 1206 if (cctx->sptr != (void *)-1)
967 { 1207 {
968# if CORO_STACKGUARD 1208 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1209 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1210 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1211 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1212 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1213 cctx->flags |= CC_MAPPED;
974 } 1214 }
975 else 1215 else
976#endif 1216#endif
977 { 1217 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1218 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1219 New (0, cctx->sptr, cctx_stacksize, long);
980 1220
981 if (!cctx->sptr) 1221 if (!cctx->sptr)
982 { 1222 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1223 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1224 _exit (EXIT_FAILURE);
985 } 1225 }
986 1226
987 stack_start = cctx->sptr; 1227 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1228 stack_size = cctx->ssize;
989 } 1229 }
990 1230
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1231 #if CORO_USE_VALGRIND
1232 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1233 #endif
1234
992 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1235 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1236
994 return cctx; 1237 return cctx;
995} 1238}
996 1239
… …
999{ 1242{
1000 if (!cctx) 1243 if (!cctx)
1001 return; 1244 return;
1002 1245
1003 --cctx_count; 1246 --cctx_count;
1247 coro_destroy (&cctx->cctx);
1004 1248
1249 /* coro_transfer creates new, empty cctx's */
1250 if (cctx->sptr)
1251 {
1005#if CORO_USE_VALGRIND 1252 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1253 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007#endif 1254 #endif
1008 1255
1009#if HAVE_MMAP 1256#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED) 1257 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize); 1258 munmap (cctx->sptr, cctx->ssize);
1012 else 1259 else
1013#endif 1260#endif
1014 Safefree (cctx->sptr); 1261 Safefree (cctx->sptr);
1262 }
1015 1263
1016 Safefree (cctx); 1264 Safefree (cctx);
1017} 1265}
1018 1266
1019/* wether this cctx should be destructed */ 1267/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1268#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1269
1022static coro_cctx * 1270static coro_cctx *
1023cctx_get (pTHX) 1271cctx_get (pTHX)
1024{ 1272{
1025 while (expect_true (cctx_first)) 1273 while (expect_true (cctx_first))
… …
1032 return cctx; 1280 return cctx;
1033 1281
1034 cctx_destroy (cctx); 1282 cctx_destroy (cctx);
1035 } 1283 }
1036 1284
1037 return cctx_new (); 1285 return cctx_new_run ();
1038} 1286}
1039 1287
1040static void 1288static void
1041cctx_put (coro_cctx *cctx) 1289cctx_put (coro_cctx *cctx)
1042{ 1290{
1291 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1292
1043 /* free another cctx if overlimit */ 1293 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1294 if (expect_false (cctx_idle >= cctx_max_idle))
1045 { 1295 {
1046 coro_cctx *first = cctx_first; 1296 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1297 cctx_first = first->next;
1048 --cctx_idle; 1298 --cctx_idle;
1049 1299
… …
1058/** coroutine switching *****************************************************/ 1308/** coroutine switching *****************************************************/
1059 1309
1060static void 1310static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1311transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1312{
1313 /* TODO: throwing up here is considered harmful */
1314
1063 if (expect_true (prev != next)) 1315 if (expect_true (prev != next))
1064 { 1316 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1067 1319
1068 if (expect_false (next->flags & CF_RUNNING)) 1320 if (expect_false (next->flags & CF_RUNNING))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1070 1322
1071 if (expect_false (next->flags & CF_DESTROYED)) 1323 if (expect_false (next->flags & CF_DESTROYED))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1073 1325
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1326#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1327 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1329#endif
1082 } 1330 }
1083} 1331}
1084 1332
1085/* always use the TRANSFER macro */ 1333/* always use the TRANSFER macro */
1086static void NOINLINE 1334static void NOINLINE /* noinline so we have a fixed stackframe */
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1336{
1089 dSTACKLEVEL; 1337 dSTACKLEVEL;
1090 1338
1091 /* sometimes transfer is only called to set idle_sp */ 1339 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1340 if (expect_false (!next))
… …
1098 { 1346 {
1099 coro_cctx *prev__cctx; 1347 coro_cctx *prev__cctx;
1100 1348
1101 if (expect_false (prev->flags & CF_NEW)) 1349 if (expect_false (prev->flags & CF_NEW))
1102 { 1350 {
1103 /* create a new empty context */ 1351 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx); 1352 prev->cctx = cctx_new_empty ();
1105 prev->flags &= ~CF_NEW; 1353 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1354 prev->flags |= CF_RUNNING;
1107 } 1355 }
1108 1356
1109 prev->flags &= ~CF_RUNNING; 1357 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1358 next->flags |= CF_RUNNING;
1111 1359
1112 LOCK; 1360 /* first get rid of the old state */
1361 save_perl (aTHX_ prev);
1113 1362
1114 if (expect_false (next->flags & CF_NEW)) 1363 if (expect_false (next->flags & CF_NEW))
1115 { 1364 {
1116 /* need to start coroutine */ 1365 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1366 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1367 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1368 coro_setup (aTHX_ next);
1122 } 1369 }
1123 else 1370 else
1371 load_perl (aTHX_ next);
1372
1373 prev__cctx = prev->cctx;
1374
1375 /* possibly untie and reuse the cctx */
1376 if (expect_true (
1377 prev__cctx->idle_sp == STACKLEVEL
1378 && !(prev__cctx->flags & CC_TRACE)
1379 && !force_cctx
1380 ))
1124 { 1381 {
1125 /* coroutine already started */
1126 save_perl (aTHX_ prev);
1127 load_perl (aTHX_ next);
1128 }
1129
1130 prev__cctx = prev->cctx;
1131
1132 /* possibly "free" the cctx */
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1134 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1137 1384
1138 prev->cctx = 0; 1385 prev->cctx = 0;
1139 1386
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1156 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
1157 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159 } 1406 }
1160 1407
1161 free_coro_mortal (aTHX); 1408 transfer_tail (aTHX);
1162 UNLOCK;
1163
1164 if (expect_false (prev->throw || next->throw))
1165 {
1166 struct coro *coro = SvSTATE (coro_current);
1167
1168 if (coro->throw)
1169 {
1170 SV *exception = coro->throw;
1171 coro->throw = 0;
1172 sv_setsv (ERRSV, exception);
1173 croak (0);
1174 }
1175 }
1176 } 1409 }
1177} 1410}
1178 1411
1179struct transfer_args
1180{
1181 struct coro *prev, *next;
1182};
1183
1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186 1414
1187/** high level stuff ********************************************************/ 1415/** high level stuff ********************************************************/
1188 1416
1189static int 1417static int
1190coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
1191{ 1419{
1192 if (coro->flags & CF_DESTROYED) 1420 if (coro->flags & CF_DESTROYED)
1193 return 0; 1421 return 0;
1422
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro);
1194 1425
1195 coro->flags |= CF_DESTROYED; 1426 coro->flags |= CF_DESTROYED;
1196 1427
1197 if (coro->flags & CF_READY) 1428 if (coro->flags & CF_READY)
1198 { 1429 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1430 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */ 1431 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready; 1432 --coro_nready;
1203 UNLOCK;
1204 } 1433 }
1205 else 1434 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1207 1436
1208 if (coro->mainstack && coro->mainstack != main_mainstack) 1437 if (coro->mainstack && coro->mainstack != main_mainstack)
1209 { 1438 {
1210 struct coro temp; 1439 struct coro temp;
1211 1440
1212 if (coro->flags & CF_RUNNING) 1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1213 croak ("FATAL: tried to destroy currently running coroutine");
1214 1442
1215 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1216 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1217 1445
1218 coro_destroy (aTHX_ coro); 1446 coro_destruct (aTHX_ coro);
1219 1447
1220 load_perl (aTHX_ &temp); 1448 load_perl (aTHX_ &temp);
1221 1449
1222 coro->slot = 0; 1450 coro->slot = 0;
1223 } 1451 }
1224 1452
1225 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv);
1226 SvREFCNT_dec (coro->args); 1455 SvREFCNT_dec (coro->args);
1456 SvREFCNT_dec (CORO_THROW);
1227 1457
1228 if (coro->next) coro->next->prev = coro->prev; 1458 if (coro->next) coro->next->prev = coro->prev;
1229 if (coro->prev) coro->prev->next = coro->next; 1459 if (coro->prev) coro->prev->next = coro->next;
1230 if (coro == coro_first) coro_first = coro->next; 1460 if (coro == coro_first) coro_first = coro->next;
1231 1461
… …
1269# define MGf_DUP 0 1499# define MGf_DUP 0
1270#endif 1500#endif
1271}; 1501};
1272 1502
1273static void 1503static void
1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1504prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1275{ 1505{
1276 ta->prev = SvSTATE (prev_sv); 1506 ta->prev = SvSTATE (prev_sv);
1277 ta->next = SvSTATE (next_sv); 1507 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta); 1508 TRANSFER_CHECK (*ta);
1279} 1509}
1280 1510
1281static void 1511static void
1282api_transfer (SV *prev_sv, SV *next_sv) 1512api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1283{ 1513{
1284 dTHX;
1285 struct transfer_args ta; 1514 struct coro_transfer_args ta;
1286 1515
1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1288 TRANSFER (ta); 1517 TRANSFER (ta, 1);
1518}
1519
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1289} 1541}
1290 1542
1291/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1292 1544
1293static void 1545INLINE void
1294coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1295{ 1547{
1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1297} 1549}
1298 1550
1299static SV * 1551INLINE SV *
1300coro_deq (pTHX_ int min_prio) 1552coro_deq (pTHX)
1301{ 1553{
1302 int prio = PRIO_MAX - PRIO_MIN; 1554 int prio;
1303 1555
1304 min_prio -= PRIO_MIN;
1305 if (min_prio < 0)
1306 min_prio = 0;
1307
1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1309 if (AvFILLp (coro_ready [prio]) >= 0) 1557 if (AvFILLp (coro_ready [prio]) >= 0)
1310 return av_shift (coro_ready [prio]); 1558 return av_shift (coro_ready [prio]);
1311 1559
1312 return 0; 1560 return 0;
1313} 1561}
1314 1562
1315static int 1563static int
1316api_ready (SV *coro_sv) 1564api_ready (pTHX_ SV *coro_sv)
1317{ 1565{
1318 dTHX;
1319 struct coro *coro; 1566 struct coro *coro;
1567 SV *sv_hook;
1568 void (*xs_hook)(void);
1320 1569
1321 if (SvROK (coro_sv)) 1570 if (SvROK (coro_sv))
1322 coro_sv = SvRV (coro_sv); 1571 coro_sv = SvRV (coro_sv);
1323 1572
1324 coro = SvSTATE (coro_sv); 1573 coro = SvSTATE (coro_sv);
… …
1326 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1327 return 0; 1576 return 0;
1328 1577
1329 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1330 1579
1331 LOCK; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1582
1583 coro_enq (aTHX_ coro);
1333 ++coro_nready; 1584 ++coro_nready;
1334 UNLOCK; 1585
1586 if (sv_hook)
1587 {
1588 dSP;
1589
1590 ENTER;
1591 SAVETMPS;
1592
1593 PUSHMARK (SP);
1594 PUTBACK;
1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1596
1597 FREETMPS;
1598 LEAVE;
1599 }
1600
1601 if (xs_hook)
1602 xs_hook ();
1335 1603
1336 return 1; 1604 return 1;
1337} 1605}
1338 1606
1339static int 1607static int
1340api_is_ready (SV *coro_sv) 1608api_is_ready (pTHX_ SV *coro_sv)
1341{ 1609{
1342 dTHX;
1343 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1610 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1344} 1611}
1345 1612
1346static void 1613INLINE void
1347prepare_schedule (pTHX_ struct transfer_args *ta) 1614prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1348{ 1615{
1349 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1350 1617
1351 for (;;) 1618 for (;;)
1352 { 1619 {
1353 LOCK;
1354 next_sv = coro_deq (aTHX_ PRIO_MIN); 1620 next_sv = coro_deq (aTHX);
1355 1621
1356 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1358 { 1624 {
1359 dSP; 1625 dSP;
1360 UNLOCK;
1361 1626
1362 ENTER; 1627 ENTER;
1363 SAVETMPS; 1628 SAVETMPS;
1364 1629
1365 PUSHMARK (SP); 1630 PUSHMARK (SP);
1366 PUTBACK; 1631 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1368 1633
1369 FREETMPS; 1634 FREETMPS;
1370 LEAVE; 1635 LEAVE;
1371 continue; 1636 continue;
1372 } 1637 }
1373 1638
1374 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1375 1640
1376 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 { 1643 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1382 continue; 1646 continue;
1383 } 1647 }
1384 1648
1385 --coro_nready; 1649 --coro_nready;
1386 UNLOCK;
1387 break; 1650 break;
1388 } 1651 }
1389 1652
1390 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1391 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1392 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1393 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1394 assert (ta->next->flags & CF_READY); 1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1395 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1396 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1397 1660
1398 LOCK;
1399 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1401 UNLOCK;
1402} 1663}
1403 1664
1404static void 1665INLINE void
1405prepare_cede (pTHX_ struct transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1406{ 1667{
1407 api_ready (coro_current); 1668 api_ready (aTHX_ coro_current);
1408 prepare_schedule (aTHX_ ta); 1669 prepare_schedule (aTHX_ ta);
1409} 1670}
1410 1671
1672INLINE void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{
1675 SV *prev = SvRV (coro_current);
1676
1677 if (coro_nready)
1678 {
1679 prepare_schedule (aTHX_ ta);
1680 api_ready (aTHX_ prev);
1681 }
1682 else
1683 prepare_nop (aTHX_ ta);
1684}
1685
1686static void
1687api_schedule (pTHX)
1688{
1689 struct coro_transfer_args ta;
1690
1691 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1);
1693}
1694
1411static int 1695static int
1412prepare_cede_notself (pTHX_ struct transfer_args *ta) 1696api_cede (pTHX)
1413{ 1697{
1414 if (coro_nready) 1698 struct coro_transfer_args ta;
1415 { 1699
1416 SV *prev = SvRV (coro_current);
1417 prepare_schedule (aTHX_ ta); 1700 prepare_cede (aTHX_ &ta);
1418 api_ready (prev); 1701
1702 if (expect_true (ta.prev != ta.next))
1703 {
1704 TRANSFER (ta, 1);
1419 return 1; 1705 return 1;
1420 } 1706 }
1421 else 1707 else
1422 return 0; 1708 return 0;
1423} 1709}
1424 1710
1425static void
1426api_schedule (void)
1427{
1428 dTHX;
1429 struct transfer_args ta;
1430
1431 prepare_schedule (aTHX_ &ta);
1432 TRANSFER (ta);
1433}
1434
1435static int 1711static int
1436api_cede (void) 1712api_cede_notself (pTHX)
1437{ 1713{
1438 dTHX; 1714 if (coro_nready)
1715 {
1439 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1440 1717
1441 prepare_cede (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1442
1443 if (expect_true (ta.prev != ta.next))
1444 {
1445 TRANSFER (ta); 1719 TRANSFER (ta, 1);
1446 return 1; 1720 return 1;
1447 } 1721 }
1448 else 1722 else
1449 return 0; 1723 return 0;
1450} 1724}
1451 1725
1452static int 1726static void
1453api_cede_notself (void)
1454{
1455 dTHX;
1456 struct transfer_args ta;
1457
1458 if (prepare_cede_notself (aTHX_ &ta))
1459 {
1460 TRANSFER (ta);
1461 return 1;
1462 }
1463 else
1464 return 0;
1465}
1466
1467static void
1468api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1469{ 1728{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1472 1730
1473 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1474 { 1732 {
1475 if (!coro->cctx) 1733 if (!coro->cctx)
1476 coro->cctx = cctx_new (); 1734 coro->cctx = cctx_new_run ();
1477 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1479 1737
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 } 1739 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 { 1741 {
… …
1488 else 1746 else
1489 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1490 } 1748 }
1491} 1749}
1492 1750
1751/*****************************************************************************/
1752/* rouse callback */
1753
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755
1756static void
1757coro_rouse_callback (pTHX_ CV *cv)
1758{
1759 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG;
1761
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 {
1764 /* first call, set args */
1765 int i;
1766 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768
1769 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772
1773 /* better take a full copy of the arguments */
1774 while (items--)
1775 av_store (av, items, newSVsv (ST (items)));
1776 }
1777
1778 XSRETURN_EMPTY;
1779}
1780
1781static int
1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1783{
1784 SV *data = (SV *)frame->data;
1785
1786 if (CORO_THROW)
1787 return 0;
1788
1789 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1790 return 1;
1791
1792 /* now push all results on the stack */
1793 {
1794 dSP;
1795 AV *av = (AV *)SvRV (data);
1796 int i;
1797
1798 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801
1802 /* we have stolen the elements, so ste length to zero and free */
1803 AvFILLp (av) = -1;
1804 av_undef (av);
1805
1806 PUTBACK;
1807 }
1808
1809 return 0;
1810}
1811
1812static void
1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 SV *cb;
1816
1817 if (items)
1818 cb = arg [0];
1819 else
1820 {
1821 struct coro *coro = SvSTATE_current;
1822
1823 if (!coro->rouse_cb)
1824 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1825
1826 cb = sv_2mortal (coro->rouse_cb);
1827 coro->rouse_cb = 0;
1828 }
1829
1830 if (!SvROK (cb)
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,");
1834
1835 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait;
1842 }
1843}
1844
1845static SV *
1846coro_new_rouse_cb (pTHX)
1847{
1848 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1852
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */
1855
1856 SvREFCNT_dec (coro->rouse_cb);
1857 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1858
1859 return cb;
1860}
1861
1862/*****************************************************************************/
1863/* schedule-like-function opcode (SLF) */
1864
1865static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1866static const CV *slf_cv;
1867static SV **slf_argv;
1868static int slf_argc, slf_arga; /* count, allocated */
1869static I32 slf_ax; /* top of stack, for restore */
1870
1871/* this restores the stack in the case we patched the entersub, to */
1872/* recreate the stack frame as perl will on following calls */
1873/* since entersub cleared the stack */
1874static OP *
1875pp_restore (pTHX)
1876{
1877 int i;
1878 SV **SP = PL_stack_base + slf_ax;
1879
1880 PUSHMARK (SP);
1881
1882 EXTEND (SP, slf_argc + 1);
1883
1884 for (i = 0; i < slf_argc; ++i)
1885 PUSHs (sv_2mortal (slf_argv [i]));
1886
1887 PUSHs ((SV *)CvGV (slf_cv));
1888
1889 RETURNOP (slf_restore.op_first);
1890}
1891
1892static void
1893slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1894{
1895 SV **arg = (SV **)slf_frame.data;
1896
1897 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1898}
1899
1900static void
1901slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1902{
1903 if (items != 2)
1904 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1905
1906 frame->prepare = slf_prepare_transfer;
1907 frame->check = slf_check_nop;
1908 frame->data = (void *)arg; /* let's hope it will stay valid */
1909}
1910
1911static void
1912slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1913{
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop;
1916}
1917
1918static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop;
1923}
1924
1925static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{
1928 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop;
1930}
1931
1932/*
1933 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same
1935 * stack offset
1936 * SLF stands for "schedule-like-function".
1937 */
1938static OP *
1939pp_slf (pTHX)
1940{
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942
1943 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare))
1947 {
1948 /* first iteration */
1949 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */
1952 SV *gv = *sp;
1953
1954 /* do a quick consistency check on the "function" object, and if it isn't */
1955 /* for us, divert to the real entersub */
1956 if (SvTYPE (gv) != SVt_PVGV
1957 || !GvCV (gv)
1958 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1959 return PL_ppaddr[OP_ENTERSUB](aTHX);
1960
1961 if (!(PL_op->op_flags & OPf_STACKED))
1962 {
1963 /* ampersand-form of call, use @_ instead of stack */
1964 AV *av = GvAV (PL_defgv);
1965 arg = AvARRAY (av);
1966 items = AvFILLp (av) + 1;
1967 }
1968
1969 /* now call the init function, which needs to set up slf_frame */
1970 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1971 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1972
1973 /* pop args */
1974 SP = PL_stack_base + POPMARK;
1975
1976 PUTBACK;
1977 }
1978
1979 /* now that we have a slf_frame, interpret it! */
1980 /* we use a callback system not to make the code needlessly */
1981 /* complicated, but so we can run multiple perl coros from one cctx */
1982
1983 do
1984 {
1985 struct coro_transfer_args ta;
1986
1987 slf_frame.prepare (aTHX_ &ta);
1988 TRANSFER (ta, 0);
1989
1990 checkmark = PL_stack_sp - PL_stack_base;
1991 }
1992 while (slf_frame.check (aTHX_ &slf_frame));
1993
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995
1996 /* exception handling */
1997 if (expect_false (CORO_THROW))
1998 {
1999 SV *exception = sv_2mortal (CORO_THROW);
2000
2001 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception);
2003 croak (0);
2004 }
2005
2006 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR)
2009 {
2010 dSP;
2011 SV **bot = PL_stack_base + checkmark;
2012
2013 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */
2016 bot [1] = *sp;
2017
2018 SP = bot + 1;
2019
2020 PUTBACK;
2021 }
2022
2023 return NORMAL;
2024}
2025
2026static void
2027api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2028{
2029 int i;
2030 SV **arg = PL_stack_base + ax;
2031 int items = PL_stack_sp - arg + 1;
2032
2033 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2034
2035 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2036 && PL_op->op_ppaddr != pp_slf)
2037 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2038
2039 CvFLAGS (cv) |= CVf_SLF;
2040 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2041 slf_cv = cv;
2042
2043 /* we patch the op, and then re-run the whole call */
2044 /* we have to put the same argument on the stack for this to work */
2045 /* and this will be done by pp_restore */
2046 slf_restore.op_next = (OP *)&slf_restore;
2047 slf_restore.op_type = OP_CUSTOM;
2048 slf_restore.op_ppaddr = pp_restore;
2049 slf_restore.op_first = PL_op;
2050
2051 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2052
2053 if (PL_op->op_flags & OPf_STACKED)
2054 {
2055 if (items > slf_arga)
2056 {
2057 slf_arga = items;
2058 free (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *));
2060 }
2061
2062 slf_argc = items;
2063
2064 for (i = 0; i < items; ++i)
2065 slf_argv [i] = SvREFCNT_inc (arg [i]);
2066 }
2067 else
2068 slf_argc = 0;
2069
2070 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2072
2073 PL_op = (OP *)&slf_restore;
2074}
2075
2076/*****************************************************************************/
2077/* PerlIO::cede */
2078
2079typedef struct
2080{
2081 PerlIOBuf base;
2082 NV next, every;
2083} PerlIOCede;
2084
2085static IV
2086PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2087{
2088 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2089
2090 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2091 self->next = nvtime () + self->every;
2092
2093 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2094}
2095
2096static SV *
2097PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2098{
2099 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2100
2101 return newSVnv (self->every);
2102}
2103
2104static IV
2105PerlIOCede_flush (pTHX_ PerlIO *f)
2106{
2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2108 double now = nvtime ();
2109
2110 if (now >= self->next)
2111 {
2112 api_cede (aTHX);
2113 self->next = now + self->every;
2114 }
2115
2116 return PerlIOBuf_flush (aTHX_ f);
2117}
2118
2119static PerlIO_funcs PerlIO_cede =
2120{
2121 sizeof(PerlIO_funcs),
2122 "cede",
2123 sizeof(PerlIOCede),
2124 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2125 PerlIOCede_pushed,
2126 PerlIOBuf_popped,
2127 PerlIOBuf_open,
2128 PerlIOBase_binmode,
2129 PerlIOCede_getarg,
2130 PerlIOBase_fileno,
2131 PerlIOBuf_dup,
2132 PerlIOBuf_read,
2133 PerlIOBuf_unread,
2134 PerlIOBuf_write,
2135 PerlIOBuf_seek,
2136 PerlIOBuf_tell,
2137 PerlIOBuf_close,
2138 PerlIOCede_flush,
2139 PerlIOBuf_fill,
2140 PerlIOBase_eof,
2141 PerlIOBase_error,
2142 PerlIOBase_clearerr,
2143 PerlIOBase_setlinebuf,
2144 PerlIOBuf_get_base,
2145 PerlIOBuf_bufsiz,
2146 PerlIOBuf_get_ptr,
2147 PerlIOBuf_get_cnt,
2148 PerlIOBuf_set_ptrcnt,
2149};
2150
2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
2153
2154static SV *
2155coro_waitarray_new (pTHX_ int count)
2156{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV ();
2159 SV **ary;
2160
2161 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary;
2164 /*AvARRAY (av) = ary;*/
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2166 AvMAX (av) = 1;
2167 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count);
2169
2170 return newRV_noinc ((SV *)av);
2171}
2172
2173/* semaphore */
2174
2175static void
2176coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2177{
2178 SV *count_sv = AvARRAY (av)[0];
2179 IV count = SvIVX (count_sv);
2180
2181 count += adjust;
2182 SvIVX (count_sv) = count;
2183
2184 /* now wake up as many waiters as are expected to lock */
2185 while (count > 0 && AvFILLp (av) > 0)
2186 {
2187 SV *cb;
2188
2189 /* swap first two elements so we can shift a waiter */
2190 AvARRAY (av)[0] = AvARRAY (av)[1];
2191 AvARRAY (av)[1] = count_sv;
2192 cb = av_shift (av);
2193
2194 if (SvOBJECT (cb))
2195 {
2196 api_ready (aTHX_ cb);
2197 --count;
2198 }
2199 else if (SvTYPE (cb) == SVt_PVCV)
2200 {
2201 dSP;
2202 PUSHMARK (SP);
2203 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2204 PUTBACK;
2205 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2206 }
2207
2208 SvREFCNT_dec (cb);
2209 }
2210}
2211
2212static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2214{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2217}
2218
2219static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{
2222 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0];
2224
2225 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW)
2227 return 0;
2228 else if (SvIVX (count_sv) > 0)
2229 {
2230 SvSTATE_current->on_destroy = 0;
2231
2232 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else
2235 coro_semaphore_adjust (aTHX_ av, 0);
2236
2237 return 0;
2238 }
2239 else
2240 {
2241 int i;
2242 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */
2245
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current))
2248 return 1;
2249
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2251 return 1;
2252 }
2253}
2254
2255static int
2256slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2257{
2258 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2259}
2260
2261static int
2262slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2263{
2264 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2265}
2266
2267static void
2268slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 AV *av = (AV *)SvRV (arg [0]);
2271
2272 if (SvIVX (AvARRAY (av)[0]) > 0)
2273 {
2274 frame->data = (void *)av;
2275 frame->prepare = prepare_nop;
2276 }
2277 else
2278 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2287 }
2288}
2289
2290static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2294 frame->check = slf_check_semaphore_down;
2295}
2296
2297static void
2298slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2299{
2300 if (items >= 2)
2301 {
2302 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (arg [1]);
2305
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2307
2308 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0);
2310
2311 frame->prepare = prepare_nop;
2312 frame->check = slf_check_nop;
2313 }
2314 else
2315 {
2316 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2317 frame->check = slf_check_semaphore_wait;
2318 }
2319}
2320
2321/* signal */
2322
2323static void
2324coro_signal_wake (pTHX_ AV *av, int count)
2325{
2326 SvIVX (AvARRAY (av)[0]) = 0;
2327
2328 /* now signal count waiters */
2329 while (count > 0 && AvFILLp (av) > 0)
2330 {
2331 SV *cb;
2332
2333 /* swap first two elements so we can shift a waiter */
2334 cb = AvARRAY (av)[0];
2335 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb;
2337
2338 cb = av_shift (av);
2339
2340 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */
2342 SvREFCNT_dec (cb);
2343
2344 --count;
2345 }
2346}
2347
2348static int
2349slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2350{
2351 /* if we are about to throw, also stop waiting */
2352 return SvROK ((SV *)frame->data) && !CORO_THROW;
2353}
2354
2355static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{
2358 AV *av = (AV *)SvRV (arg [0]);
2359
2360 if (SvIVX (AvARRAY (av)[0]))
2361 {
2362 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop;
2365 }
2366 else
2367 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2369
2370 av_push (av, waiter);
2371
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule;
2374 frame->check = slf_check_signal_wait;
2375 }
2376}
2377
2378/*****************************************************************************/
2379/* Coro::AIO */
2380
2381#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2382
2383/* helper storage struct */
2384struct io_state
2385{
2386 int errorno;
2387 I32 laststype; /* U16 in 5.10.0 */
2388 int laststatval;
2389 Stat_t statcache;
2390};
2391
2392static void
2393coro_aio_callback (pTHX_ CV *cv)
2394{
2395 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG;
2397 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state));
2399
2400 av_extend (state, items);
2401
2402 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv);
2405
2406 {
2407 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2408
2409 data->errorno = errno;
2410 data->laststype = PL_laststype;
2411 data->laststatval = PL_laststatval;
2412 data->statcache = PL_statcache;
2413 }
2414
2415 /* now build the result vector out of all the parameters and the data_sv */
2416 {
2417 int i;
2418
2419 for (i = 0; i < items; ++i)
2420 av_push (state, SvREFCNT_inc_NN (ST (i)));
2421 }
2422
2423 av_push (state, data_sv);
2424
2425 api_ready (aTHX_ coro);
2426 SvREFCNT_dec (coro);
2427 SvREFCNT_dec ((AV *)state);
2428}
2429
2430static int
2431slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2432{
2433 AV *state = (AV *)frame->data;
2434
2435 /* if we are about to throw, return early */
2436 /* this does not cancel the aio request, but at least */
2437 /* it quickly returns */
2438 if (CORO_THROW)
2439 return 0;
2440
2441 /* one element that is an RV? repeat! */
2442 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2443 return 1;
2444
2445 /* restore status */
2446 {
2447 SV *data_sv = av_pop (state);
2448 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2449
2450 errno = data->errorno;
2451 PL_laststype = data->laststype;
2452 PL_laststatval = data->laststatval;
2453 PL_statcache = data->statcache;
2454
2455 SvREFCNT_dec (data_sv);
2456 }
2457
2458 /* push result values */
2459 {
2460 dSP;
2461 int i;
2462
2463 EXTEND (SP, AvFILLp (state) + 1);
2464 for (i = 0; i <= AvFILLp (state); ++i)
2465 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2466
2467 PUTBACK;
2468 }
2469
2470 return 0;
2471}
2472
2473static void
2474slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2475{
2476 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2477 SV *coro_hv = SvRV (coro_current);
2478 struct coro *coro = SvSTATE_hv (coro_hv);
2479
2480 /* put our coroutine id on the state arg */
2481 av_push (state, SvREFCNT_inc_NN (coro_hv));
2482
2483 /* first see whether we have a non-zero priority and set it as AIO prio */
2484 if (coro->prio)
2485 {
2486 dSP;
2487
2488 static SV *prio_cv;
2489 static SV *prio_sv;
2490
2491 if (expect_false (!prio_cv))
2492 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0);
2495 }
2496
2497 PUSHMARK (SP);
2498 sv_setiv (prio_sv, coro->prio);
2499 XPUSHs (prio_sv);
2500
2501 PUTBACK;
2502 call_sv (prio_cv, G_VOID | G_DISCARD);
2503 }
2504
2505 /* now call the original request */
2506 {
2507 dSP;
2508 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2509 int i;
2510
2511 PUSHMARK (SP);
2512
2513 /* first push all args to the stack */
2514 EXTEND (SP, items + 1);
2515
2516 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]);
2518
2519 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521
2522 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 }
2526
2527 /* now that the requets is going, we loop toll we have a result */
2528 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req;
2531}
2532
2533static void
2534coro_aio_req_xs (pTHX_ CV *cv)
2535{
2536 dXSARGS;
2537
2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2539
2540 XSRETURN_EMPTY;
2541}
2542
2543/*****************************************************************************/
2544
1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494 2546
1495PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1496 2548
1497BOOT: 2549BOOT:
1498{ 2550{
1499#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1500 MUTEX_INIT (&coro_mutex); 2552# if CORO_PTHREAD
2553 coro_thx = PERL_GET_CONTEXT;
2554# endif
1501#endif 2555#endif
1502 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
1503 2557
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506 2560
2561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2562 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2563 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2564
1507 hv_sig = coro_get_hv ("SIG", TRUE); 2565 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2566 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2567 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1510
1511 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513 2568
1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2569 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515 2570
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2571 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2572 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1522 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
1523 2578
1524 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
1526 2581
2582 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf,
2587 newSVpv ("coro_slf", 0), 0);
2588
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf,
2591 newSVpv ("coro schedule like function", 0), 0);
2592 }
2593
1527 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
2595 coroapi.rev = CORO_API_REVISION;
2596
1528 coroapi.transfer = api_transfer; 2597 coroapi.transfer = api_transfer;
2598
2599 coroapi.sv_state = SvSTATE_;
2600 coroapi.execute_slf = api_execute_slf;
2601 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself;
2605
2606 {
2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2608
2609 if (!svp) croak ("Time::HiRes is required");
2610 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2611
2612 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2613 }
1529 2614
1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1531} 2616}
1532 2617
1533SV * 2618SV *
1534new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
1535 CODE: 2622 CODE:
1536{ 2623{
1537 struct coro *coro; 2624 struct coro *coro;
2625 MAGIC *mg;
1538 HV *hv; 2626 HV *hv;
2627 CV *cb;
1539 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
1540 2643
1541 Newz (0, coro, 1, struct coro); 2644 Newz (0, coro, 1, struct coro);
1542 coro->args = newAV (); 2645 coro->args = newAV ();
1543 coro->flags = CF_NEW; 2646 coro->flags = CF_NEW;
1544 2647
1545 if (coro_first) coro_first->prev = coro; 2648 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first; 2649 coro->next = coro_first;
1547 coro_first = coro; 2650 coro_first = coro;
1548 2651
1549 coro->hv = hv = newHV (); 2652 coro->hv = hv = newHV ();
1550 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2654 mg->mg_flags |= MGf_DUP;
1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552 2656
2657 if (items > 1)
2658 {
1553 av_extend (coro->args, items - 1); 2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
1554 for (i = 1; i < items; i++) 2669 for (i = 2; i < items; i++)
1555 av_push (coro->args, newSVsv (ST (i))); 2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
1556} 2672}
1557 OUTPUT: 2673 OUTPUT:
1558 RETVAL 2674 RETVAL
1559 2675
1560# these not obviously related functions are all rolled into the same xs
1561# function to increase chances that they all will call transfer with the same
1562# stack offset
1563void 2676void
1564_set_stacklevel (...) 2677transfer (...)
1565 ALIAS: 2678 PROTOTYPE: $$
1566 Coro::State::transfer = 1 2679 CODE:
1567 Coro::schedule = 2 2680 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1568 Coro::cede = 3
1569 Coro::cede_notself = 4
1570 Coro::Event::next = 5
1571 Coro::Event::next_cancel = 6
1572 PPCODE:
1573{
1574 struct transfer_args ta;
1575 int again = 0;
1576
1577 do
1578 {
1579 switch (ix)
1580 {
1581 case 0:
1582 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1583 ta.next = 0;
1584 break;
1585
1586 case 1:
1587 if (items != 2)
1588 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1589
1590 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1591 break;
1592
1593 case 2:
1594 prepare_schedule (aTHX_ &ta);
1595 break;
1596
1597 case 3:
1598 prepare_cede (aTHX_ &ta);
1599 break;
1600
1601 case 4:
1602 if (!prepare_cede_notself (aTHX_ &ta))
1603 XSRETURN_EMPTY;
1604
1605 break;
1606
1607 case 5:
1608 case 6:
1609 if (items != 1)
1610 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1611
1612 {
1613 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1614
1615 if (ev)
1616 {
1617 if (GIMME_V != G_VOID)
1618 {
1619 XPUSHs (ev);
1620 XSRETURN (1);
1621 }
1622 else
1623 XSRETURN_EMPTY;
1624 }
1625 }
1626
1627 prepare_schedule (aTHX_ &ta);
1628 again = 1;
1629 break;
1630 }
1631
1632 BARRIER;
1633 TRANSFER (ta);
1634 BARRIER;
1635 }
1636 while (again);
1637
1638 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1639 XSRETURN_YES;
1640
1641 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1642 2681
1643bool 2682bool
1644_destroy (SV *coro_sv) 2683_destroy (SV *coro_sv)
1645 CODE: 2684 CODE:
1646 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1647 OUTPUT: 2686 OUTPUT:
1648 RETVAL 2687 RETVAL
1649 2688
1650void 2689void
1651_exit (code) 2690_exit (int code)
1652 int code
1653 PROTOTYPE: $ 2691 PROTOTYPE: $
1654 CODE: 2692 CODE:
1655 _exit (code); 2693 _exit (code);
1656 2694
1657int 2695int
1658cctx_stacksize (int new_stacksize = 0) 2696cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$
1659 CODE: 2698 CODE:
1660 RETVAL = coro_stacksize; 2699 RETVAL = cctx_stacksize;
1661 if (new_stacksize) 2700 if (new_stacksize)
2701 {
1662 coro_stacksize = new_stacksize; 2702 cctx_stacksize = new_stacksize;
2703 ++cctx_gen;
2704 }
1663 OUTPUT: 2705 OUTPUT:
1664 RETVAL 2706 RETVAL
1665 2707
1666int 2708int
2709cctx_max_idle (int max_idle = 0)
2710 PROTOTYPE: ;$
2711 CODE:
2712 RETVAL = cctx_max_idle;
2713 if (max_idle > 1)
2714 cctx_max_idle = max_idle;
2715 OUTPUT:
2716 RETVAL
2717
2718int
1667cctx_count () 2719cctx_count ()
2720 PROTOTYPE:
1668 CODE: 2721 CODE:
1669 RETVAL = cctx_count; 2722 RETVAL = cctx_count;
1670 OUTPUT: 2723 OUTPUT:
1671 RETVAL 2724 RETVAL
1672 2725
1673int 2726int
1674cctx_idle () 2727cctx_idle ()
2728 PROTOTYPE:
1675 CODE: 2729 CODE:
1676 RETVAL = cctx_idle; 2730 RETVAL = cctx_idle;
1677 OUTPUT: 2731 OUTPUT:
1678 RETVAL 2732 RETVAL
1679 2733
1680void 2734void
1681list () 2735list ()
2736 PROTOTYPE:
1682 PPCODE: 2737 PPCODE:
1683{ 2738{
1684 struct coro *coro; 2739 struct coro *coro;
1685 for (coro = coro_first; coro; coro = coro->next) 2740 for (coro = coro_first; coro; coro = coro->next)
1686 if (coro->hv) 2741 if (coro->hv)
… …
1691call (Coro::State coro, SV *coderef) 2746call (Coro::State coro, SV *coderef)
1692 ALIAS: 2747 ALIAS:
1693 eval = 1 2748 eval = 1
1694 CODE: 2749 CODE:
1695{ 2750{
1696 if (coro->mainstack) 2751 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1697 { 2752 {
1698 struct coro temp; 2753 struct coro temp;
1699 2754
1700 if (!(coro->flags & CF_RUNNING)) 2755 if (!(coro->flags & CF_RUNNING))
1701 { 2756 {
2757 PUTBACK;
1702 save_perl (aTHX_ &temp); 2758 save_perl (aTHX_ &temp);
1703 load_perl (aTHX_ coro); 2759 load_perl (aTHX_ coro);
1704 } 2760 }
1705 2761
1706 { 2762 {
… …
1715 eval_sv (coderef, 0); 2771 eval_sv (coderef, 0);
1716 else 2772 else
1717 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2773 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1718 2774
1719 POPSTACK; 2775 POPSTACK;
2776 SPAGAIN;
1720 FREETMPS; 2777 FREETMPS;
1721 LEAVE; 2778 LEAVE;
2779 PUTBACK;
1722 } 2780 }
1723 2781
1724 if (!(coro->flags & CF_RUNNING)) 2782 if (!(coro->flags & CF_RUNNING))
1725 { 2783 {
1726 save_perl (aTHX_ coro); 2784 save_perl (aTHX_ coro);
1727 load_perl (aTHX_ &temp); 2785 load_perl (aTHX_ &temp);
2786 SPAGAIN;
1728 } 2787 }
1729 } 2788 }
1730} 2789}
1731 2790
1732SV * 2791SV *
… …
1741 RETVAL = boolSV (coro->flags & ix); 2800 RETVAL = boolSV (coro->flags & ix);
1742 OUTPUT: 2801 OUTPUT:
1743 RETVAL 2802 RETVAL
1744 2803
1745void 2804void
2805throw (Coro::State self, SV *throw = &PL_sv_undef)
2806 PROTOTYPE: $;$
2807 CODE:
2808{
2809 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except;
2811 SvREFCNT_dec (*throwp);
2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2813}
2814
2815void
1746api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$
2818 C_ARGS: aTHX_ coro, flags
1747 2819
1748SV * 2820SV *
1749has_stack (Coro::State coro) 2821has_cctx (Coro::State coro)
1750 PROTOTYPE: $ 2822 PROTOTYPE: $
1751 CODE: 2823 CODE:
1752 RETVAL = boolSV (!!coro->cctx); 2824 RETVAL = boolSV (!!coro->cctx);
1753 OUTPUT: 2825 OUTPUT:
1754 RETVAL 2826 RETVAL
… …
1759 CODE: 2831 CODE:
1760 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2832 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1761 OUTPUT: 2833 OUTPUT:
1762 RETVAL 2834 RETVAL
1763 2835
1764IV 2836UV
1765rss (Coro::State coro) 2837rss (Coro::State coro)
1766 PROTOTYPE: $ 2838 PROTOTYPE: $
1767 ALIAS: 2839 ALIAS:
1768 usecount = 1 2840 usecount = 1
1769 CODE: 2841 CODE:
… …
1773 case 1: RETVAL = coro->usecount; break; 2845 case 1: RETVAL = coro->usecount; break;
1774 } 2846 }
1775 OUTPUT: 2847 OUTPUT:
1776 RETVAL 2848 RETVAL
1777 2849
2850void
2851force_cctx ()
2852 PROTOTYPE:
2853 CODE:
2854 SvSTATE_current->cctx->idle_sp = 0;
2855
2856void
2857swap_defsv (Coro::State self)
2858 PROTOTYPE: $
2859 ALIAS:
2860 swap_defav = 1
2861 CODE:
2862 if (!self->slot)
2863 croak ("cannot swap state with coroutine that has no saved state,");
2864 else
2865 {
2866 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2868
2869 SV *tmp = *src; *src = *dst; *dst = tmp;
2870 }
2871
1778 2872
1779MODULE = Coro::State PACKAGE = Coro 2873MODULE = Coro::State PACKAGE = Coro
1780 2874
1781BOOT: 2875BOOT:
1782{ 2876{
1783 int i; 2877 int i;
1784 2878
1785 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1786 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1787 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1788 2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2882 cv_coro_run = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
1789 coro_current = coro_get_sv ("Coro::current", FALSE); 2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
1790 SvREADONLY_on (coro_current); 2884 SvREADONLY_on (coro_current);
1791 2885
1792 coro_stash = gv_stashpv ("Coro", TRUE); 2886 coro_stash = gv_stashpv ("Coro", TRUE);
1793 2887
1794 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1800 2894
1801 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2895 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1802 coro_ready[i] = newAV (); 2896 coro_ready[i] = newAV ();
1803 2897
1804 { 2898 {
1805 SV *sv = perl_get_sv ("Coro::API", TRUE); 2899 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1806 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1807 2900
1808 coroapi.schedule = api_schedule; 2901 coroapi.schedule = api_schedule;
1809 coroapi.cede = api_cede; 2902 coroapi.cede = api_cede;
1810 coroapi.cede_notself = api_cede_notself; 2903 coroapi.cede_notself = api_cede_notself;
1811 coroapi.ready = api_ready; 2904 coroapi.ready = api_ready;
1812 coroapi.is_ready = api_is_ready; 2905 coroapi.is_ready = api_is_ready;
1813 coroapi.nready = &coro_nready; 2906 coroapi.nready = coro_nready;
1814 coroapi.current = coro_current; 2907 coroapi.current = coro_current;
1815 2908
1816 GCoroAPI = &coroapi; 2909 /*GCoroAPI = &coroapi;*/
1817 sv_setiv (sv, (IV)&coroapi); 2910 sv_setiv (sv, (IV)&coroapi);
1818 SvREADONLY_on (sv); 2911 SvREADONLY_on (sv);
1819 } 2912 }
1820} 2913}
2914
2915void
2916schedule (...)
2917 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2919
2920void
2921cede (...)
2922 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede);
2924
2925void
2926cede_notself (...)
2927 CODE:
2928 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1821 2929
1822void 2930void
1823_set_current (SV *current) 2931_set_current (SV *current)
1824 PROTOTYPE: $ 2932 PROTOTYPE: $
1825 CODE: 2933 CODE:
1826 SvREFCNT_dec (SvRV (coro_current)); 2934 SvREFCNT_dec (SvRV (coro_current));
1827 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2935 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2936
2937void
2938_set_readyhook (SV *hook)
2939 PROTOTYPE: $
2940 CODE:
2941 SvREFCNT_dec (coro_readyhook);
2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1828 2943
1829int 2944int
1830prio (Coro::State coro, int newprio = 0) 2945prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$
1831 ALIAS: 2947 ALIAS:
1832 nice = 1 2948 nice = 1
1833 CODE: 2949 CODE:
1834{ 2950{
1835 RETVAL = coro->prio; 2951 RETVAL = coro->prio;
… …
1850 2966
1851SV * 2967SV *
1852ready (SV *self) 2968ready (SV *self)
1853 PROTOTYPE: $ 2969 PROTOTYPE: $
1854 CODE: 2970 CODE:
1855 RETVAL = boolSV (api_ready (self)); 2971 RETVAL = boolSV (api_ready (aTHX_ self));
1856 OUTPUT: 2972 OUTPUT:
1857 RETVAL 2973 RETVAL
1858 2974
1859int 2975int
1860nready (...) 2976nready (...)
… …
1862 CODE: 2978 CODE:
1863 RETVAL = coro_nready; 2979 RETVAL = coro_nready;
1864 OUTPUT: 2980 OUTPUT:
1865 RETVAL 2981 RETVAL
1866 2982
1867void
1868throw (Coro::State self, SV *throw = &PL_sv_undef)
1869 PROTOTYPE: $;$
1870 CODE:
1871 SvREFCNT_dec (self->throw);
1872 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1873
1874# for async_pool speedup 2983# for async_pool speedup
1875void 2984void
1876_pool_1 (SV *cb) 2985_pool_1 (SV *cb)
1877 CODE: 2986 CODE:
1878{ 2987{
1879 struct coro *coro = SvSTATE (coro_current);
1880 HV *hv = (HV *)SvRV (coro_current); 2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
1881 AV *defav = GvAV (PL_defgv); 2990 AV *defav = GvAV (PL_defgv);
1882 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1883 AV *invoke_av; 2992 AV *invoke_av;
1884 int i, len; 2993 int i, len;
1885 2994
1886 if (!invoke) 2995 if (!invoke)
2996 {
2997 SV *old = PL_diehook;
2998 PL_diehook = 0;
2999 SvREFCNT_dec (old);
1887 croak ("\3async_pool terminate\2\n"); 3000 croak ("\3async_pool terminate\2\n");
3001 }
1888 3002
1889 SvREFCNT_dec (coro->saved_deffh); 3003 SvREFCNT_dec (coro->saved_deffh);
1890 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3004 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1891 3005
1892 hv_store (hv, "desc", sizeof ("desc") - 1, 3006 hv_store (hv, "desc", sizeof ("desc") - 1,
1893 newSVpvn (strpair ("[async_pool]")), 0); 3007 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1894 3008
1895 invoke_av = (AV *)SvRV (invoke); 3009 invoke_av = (AV *)SvRV (invoke);
1896 len = av_len (invoke_av); 3010 len = av_len (invoke_av);
1897 3011
1898 sv_setsv (cb, AvARRAY (invoke_av)[0]); 3012 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1899 3013
1900 if (len > 0) 3014 if (len > 0)
1901 { 3015 {
1902 av_fill (defav, len - 1); 3016 av_fill (defav, len - 1);
1903 for (i = 0; i < len; ++i) 3017 for (i = 0; i < len; ++i)
1904 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1905 } 3019 }
1906
1907 SvREFCNT_dec (invoke);
1908} 3020}
1909 3021
1910void 3022void
1911_pool_2 (SV *cb) 3023_pool_2 (SV *cb)
1912 CODE: 3024 CODE:
1913{ 3025{
1914 struct coro *coro = SvSTATE (coro_current); 3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
1915 3028
1916 sv_setsv (cb, &PL_sv_undef); 3029 sv_setsv (cb, &PL_sv_undef);
1917 3030
1918 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1919 coro->saved_deffh = 0; 3032 coro->saved_deffh = 0;
1920 3033
1921 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 3034 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1922 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 3035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3036 {
3037 SV *old = PL_diehook;
3038 PL_diehook = 0;
3039 SvREFCNT_dec (old);
1923 croak ("\3async_pool terminate\2\n"); 3040 croak ("\3async_pool terminate\2\n");
3041 }
1924 3042
1925 av_clear (GvAV (PL_defgv)); 3043 av_clear (GvAV (PL_defgv));
1926 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 3044 hv_store (hv, "desc", sizeof ("desc") - 1,
1927 newSVpvn (strpair ("[async_pool idle]")), 0); 3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1928 3046
1929 coro->prio = 0; 3047 coro->prio = 0;
1930 3048
1931 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1932 api_trace (coro_current, 0); 3050 api_trace (aTHX_ coro_current, 0);
1933 3051
1934 av_push (av_async_pool, newSVsv (coro_current)); 3052 av_push (av_async_pool, newSVsv (coro_current));
1935} 3053}
1936 3054
1937
1938MODULE = Coro::State PACKAGE = Coro::AIO
1939
1940SV * 3055SV *
1941_get_state () 3056rouse_cb ()
3057 PROTOTYPE:
1942 CODE: 3058 CODE:
1943{ 3059 RETVAL = coro_new_rouse_cb (aTHX);
1944 struct io_state *data;
1945
1946 RETVAL = newSV (sizeof (struct io_state));
1947 data = (struct io_state *)SvPVX (RETVAL);
1948 SvCUR_set (RETVAL, sizeof (struct io_state));
1949 SvPOK_only (RETVAL);
1950
1951 data->errorno = errno;
1952 data->laststype = PL_laststype;
1953 data->laststatval = PL_laststatval;
1954 data->statcache = PL_statcache;
1955}
1956 OUTPUT: 3060 OUTPUT:
1957 RETVAL 3061 RETVAL
1958 3062
1959void 3063void
1960_set_state (char *data_) 3064rouse_wait (...)
1961 PROTOTYPE: $ 3065 PROTOTYPE: ;$
3066 PPCODE:
3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3068
3069
3070MODULE = Coro::State PACKAGE = PerlIO::cede
3071
3072BOOT:
3073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3074
3075
3076MODULE = Coro::State PACKAGE = Coro::Semaphore
3077
3078SV *
3079new (SV *klass, SV *count = 0)
1962 CODE: 3080 CODE:
1963{ 3081 RETVAL = sv_bless (
1964 struct io_state *data = (void *)data_; 3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3083 GvSTASH (CvGV (cv))
3084 );
3085 OUTPUT:
3086 RETVAL
1965 3087
1966 errno = data->errorno; 3088# helper for Coro::Channel
1967 PL_laststype = data->laststype; 3089SV *
1968 PL_laststatval = data->laststatval; 3090_alloc (int count)
1969 PL_statcache = data->statcache; 3091 CODE:
1970} 3092 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT:
3094 RETVAL
1971 3095
3096SV *
3097count (SV *self)
3098 CODE:
3099 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3100 OUTPUT:
3101 RETVAL
3102
3103void
3104up (SV *self, int adjust = 1)
3105 ALIAS:
3106 adjust = 1
3107 CODE:
3108 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3109
3110void
3111down (...)
3112 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3114
3115void
3116wait (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3119
3120void
3121try (SV *self)
3122 PPCODE:
3123{
3124 AV *av = (AV *)SvRV (self);
3125 SV *count_sv = AvARRAY (av)[0];
3126 IV count = SvIVX (count_sv);
3127
3128 if (count > 0)
3129 {
3130 --count;
3131 SvIVX (count_sv) = count;
3132 XSRETURN_YES;
3133 }
3134 else
3135 XSRETURN_NO;
3136}
3137
3138void
3139waiters (SV *self)
3140 PPCODE:
3141{
3142 AV *av = (AV *)SvRV (self);
3143 int wcount = AvFILLp (av) + 1 - 1;
3144
3145 if (GIMME_V == G_SCALAR)
3146 XPUSHs (sv_2mortal (newSViv (wcount)));
3147 else
3148 {
3149 int i;
3150 EXTEND (SP, wcount);
3151 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 }
3154}
3155
3156MODULE = Coro::State PACKAGE = Coro::Signal
3157
3158SV *
3159new (SV *klass)
3160 CODE:
3161 RETVAL = sv_bless (
3162 coro_waitarray_new (aTHX_ 0),
3163 GvSTASH (CvGV (cv))
3164 );
3165 OUTPUT:
3166 RETVAL
3167
3168void
3169wait (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3172
3173void
3174broadcast (SV *self)
3175 CODE:
3176{
3177 AV *av = (AV *)SvRV (self);
3178 coro_signal_wake (aTHX_ av, AvFILLp (av));
3179}
3180
3181void
3182send (SV *self)
3183 CODE:
3184{
3185 AV *av = (AV *)SvRV (self);
3186
3187 if (AvFILLp (av))
3188 coro_signal_wake (aTHX_ av, 1);
3189 else
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3191}
3192
3193IV
3194awaited (SV *self)
3195 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT:
3198 RETVAL
3199
3200
3201MODULE = Coro::State PACKAGE = Coro::AnyEvent
3202
3203BOOT:
3204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3205
3206void
3207_schedule (...)
3208 CODE:
3209{
3210 static int incede;
3211
3212 api_cede_notself (aTHX);
3213
3214 ++incede;
3215 while (coro_nready >= incede && api_cede (aTHX))
3216 ;
3217
3218 sv_setsv (sv_activity, &PL_sv_undef);
3219 if (coro_nready >= incede)
3220 {
3221 PUSHMARK (SP);
3222 PUTBACK;
3223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3224 }
3225
3226 --incede;
3227}
3228
3229
3230MODULE = Coro::State PACKAGE = Coro::AIO
3231
3232void
3233_register (char *target, char *proto, SV *req)
3234 CODE:
3235{
3236 CV *req_cv = coro_sv_2cv (req);
3237 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241}
3242

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