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Comparing Coro/Coro/State.xs (file contents):
Revision 1.205 by root, Tue Oct 9 14:07:02 2007 UTC vs.
Revision 1.306 by root, Wed Nov 19 11:11:10 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
226 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
230 256
231 /* statistics */ 257 /* statistics */
232 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
233 259
234 /* coro process data */ 260 /* coro process data */
235 int prio; 261 int prio;
236 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
263 SV *rouse_cb;
237 264
238 /* async_pool */ 265 /* async_pool */
239 SV *saved_deffh; 266 SV *saved_deffh;
240 267
241 /* linked list */ 268 /* linked list */
242 struct coro *next, *prev; 269 struct coro *next, *prev;
243}; 270};
244 271
245typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */
247 279
248/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
249 281
250#define PRIO_MAX 3 282#define PRIO_MAX 3
251#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
254#define PRIO_IDLE -3 286#define PRIO_IDLE -3
255#define PRIO_MIN -4 287#define PRIO_MIN -4
256 288
257/* for Coro.pm */ 289/* for Coro.pm */
258static SV *coro_current; 290static SV *coro_current;
291static SV *coro_readyhook;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
260static int coro_nready;
261static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
262 295
263/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
264 297
265static SV * 298static SV *
266coro_get_sv (const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
267{ 300{
268#if PERL_VERSION_ATLEAST (5,9,0) 301#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 303 get_sv (name, create);
271#endif 304#endif
272 return get_sv (name, create); 305 return get_sv (name, create);
273} 306}
274 307
275static AV * 308static AV *
276coro_get_av (const char *name, int create) 309coro_get_av (pTHX_ const char *name, int create)
277{ 310{
278#if PERL_VERSION_ATLEAST (5,9,0) 311#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 313 get_av (name, create);
281#endif 314#endif
282 return get_av (name, create); 315 return get_av (name, create);
283} 316}
284 317
285static HV * 318static HV *
286coro_get_hv (const char *name, int create) 319coro_get_hv (pTHX_ const char *name, int create)
287{ 320{
288#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 323 get_hv (name, create);
291#endif 324#endif
292 return get_hv (name, create); 325 return get_hv (name, create);
293} 326}
… …
298 AV *padlist = CvPADLIST (cv); 331 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 332 AV *newpadlist, *newpad;
300 333
301 newpadlist = newAV (); 334 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 335 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 336#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 338#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 340#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 342 --AvFILLp (padlist);
310 343
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
312 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
313 346
314 return newpadlist; 347 return newpadlist;
315} 348}
316 349
… …
346 379
347 /* casting is fun. */ 380 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 382 free_padlist (aTHX_ padlist);
350 383
351 SvREFCNT_dec (av); 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 385
353 return 0; 386 return 0;
354} 387}
355 388
389#define CORO_MAGIC_type_cv 26
356#define PERL_MAGIC_coro PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
357 391
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 392static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0,
394 coro_cv_free
395};
359 396
360#define CORO_MAGIC(cv) \ 397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
361 SvMAGIC (cv) \ 399 ? SvMAGIC (sv) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 400 : mg_find (sv, type))
363 ? SvMAGIC (cv) \ 401
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
365 : 0 405 : 0)
366 406
367static struct coro * 407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
368SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
369{ 412{
370 HV *stash; 413 HV *stash;
371 MAGIC *mg; 414 MAGIC *mg;
372 415
… …
382 /* very slow, but rare, check */ 425 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required"); 427 croak ("Coro::State object required");
385 } 428 }
386 429
387 mg = CORO_MAGIC (coro); 430 mg = CORO_MAGIC_state (coro);
388 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
389} 432}
390 433
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439
393/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
394static void 441static void
395get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
396{ 443{
397 MAGIC *mg = CORO_MAGIC (cv); 444 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 445 AV *av;
399 446
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 449 else
403 { 450 {
404#if CORO_PREFER_PERL_FUNCTIONS 451#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 452 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 454 CV *cp = Perl_cv_clone (aTHX_ cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 455 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 456 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 457 SvREFCNT_dec (cp);
410#else 458#else
411 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
414} 462}
415 463
416static void 464static void
417put_padlist (pTHX_ CV *cv) 465put_padlist (pTHX_ CV *cv)
418{ 466{
419 MAGIC *mg = CORO_MAGIC (cv); 467 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 468 AV *av;
421 469
422 if (expect_false (!mg)) 470 if (expect_false (!mg))
423 { 471 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 }
429 472
430 av = (AV *)mg->mg_obj; 473 av = (AV *)mg->mg_obj;
431 474
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 475 if (expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 476 av_extend (av, AvMAX (av) + 1);
… …
451 GvSV (irsgv) = slot->irsgv; 494 GvSV (irsgv) = slot->irsgv;
452 495
453 #define VAR(name,type) PL_ ## name = slot->name; 496 #define VAR(name,type) PL_ ## name = slot->name;
454 # include "state.h" 497 # include "state.h"
455 #undef VAR 498 #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);*/
459 499
460 { 500 {
461 dSP; 501 dSP;
462 502
463 CV *cv; 503 CV *cv;
… …
470 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
471 } 511 }
472 512
473 PUTBACK; 513 PUTBACK;
474 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
475} 518}
476 519
477static void 520static void
478save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
479{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
480 { 526 {
481 dSP; 527 dSP;
482 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
502 548
503 if (expect_true (CvDEPTH (cv))) 549 if (expect_true (CvDEPTH (cv)))
504 { 550 {
505 EXTEND (SP, 3); 551 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
509 555
510 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
512 } 558 }
… …
551 #undef VAR 597 #undef VAR
552 } 598 }
553} 599}
554 600
555/* 601/*
556 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
560 */ 606 */
561#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 608# define coro_init_stacks(thx) init_stacks ()
563#else 609#else
564static void 610static void
565coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
566{ 612{
567 PL_curstackinfo = new_stackinfo(32, 8); 613 PL_curstackinfo = new_stackinfo(32, 8);
… …
592 638
593 New(54,PL_savestack,24,ANY); 639 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 641 PL_savestack_max = 24;
596 642
597#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 646 PL_retstack_max = 4;
601#endif 647#endif
602} 648}
… …
604 650
605/* 651/*
606 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
607 */ 653 */
608static void 654static void
609coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
610{ 656{
611 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
613 659
614 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
625 671
626 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 673 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 675 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 677 Safefree (PL_retstack);
632#endif 678#endif
633} 679}
634 680
635static size_t 681static size_t
… …
651 #undef VAR 697 #undef VAR
652 } 698 }
653 else 699 else
654 slot = coro->slot; 700 slot = coro->slot;
655 701
702 if (slot)
703 {
656 rss += sizeof (slot->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
663 711
664#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
666#endif 714#endif
715 }
667 } 716 }
668 717
669 return rss; 718 return rss;
670} 719}
671 720
672/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
673 722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
733
734/*
735 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide
738 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */
674static void 743static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = newSVsv (sv);
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
675coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
676{ 830{
677 /* 831 /*
678 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
679 */ 833 */
… …
686 PL_curpm = 0; 840 PL_curpm = 0;
687 PL_curpad = 0; 841 PL_curpad = 0;
688 PL_localizing = 0; 842 PL_localizing = 0;
689 PL_dirty = 0; 843 PL_dirty = 0;
690 PL_restartop = 0; 844 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 845#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 846 PL_parser = 0;
847#endif
848
849 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693 852
694 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 859
701 { 860 {
702 dSP; 861 dSP;
703 LOGOP myop; 862 UNOP myop;
704 863
705 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 865 myop.op_next = Nullop;
707 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
708 867
709 PUSHMARK (SP); 868 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
711 PUTBACK; 870 PUTBACK;
712 PL_op = (OP *)&myop; 871 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN; 873 SPAGAIN;
715 } 874 }
716 875
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 876 /* this newly created coroutine might be run on an existing cctx which most
718} 877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
719 881
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM;
885 coro_setup_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */
887
888 PL_op = (OP *)&coro_setup_op;
889
890 /* copy throw, in case it was set before coro_setup */
891 CORO_THROW = coro->except;
892}
893
720static void 894static void
721coro_destroy (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
722{ 896{
723 if (!IN_DESTRUCT) 897 if (!IN_DESTRUCT)
724 { 898 {
725 /* restore all saved variables and stuff */ 899 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 900 LEAVE_SCOPE (0);
… …
745 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
746 920
747 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
749 923
924 SvREFCNT_dec (CORO_THROW);
750 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
752 927
753 coro_destroy_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
754} 929}
755 930
756static void 931INLINE void
757free_coro_mortal (pTHX) 932free_coro_mortal (pTHX)
758{ 933{
759 if (expect_true (coro_mortal)) 934 if (expect_true (coro_mortal))
760 { 935 {
761 SvREFCNT_dec (coro_mortal); 936 SvREFCNT_dec (coro_mortal);
… …
766static int 941static int
767runops_trace (pTHX) 942runops_trace (pTHX)
768{ 943{
769 COP *oldcop = 0; 944 COP *oldcop = 0;
770 int oldcxix = -2; 945 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
773 948
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 { 950 {
776 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 970 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 971 : bot;
797 972
798 av_extend (av, top - bot); 973 av_extend (av, top - bot);
799 while (bot < top) 974 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 975 av_push (av, SvREFCNT_inc_NN (*bot++));
801 976
802 PL_runops = RUNOPS_DEFAULT; 977 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 978 ENTER;
804 SAVETMPS; 979 SAVETMPS;
805 EXTEND (SP, 3); 980 EXTEND (SP, 3);
806 PUSHMARK (SP); 981 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 982 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 983 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 984 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 985 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 986 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); 987 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 988 SPAGAIN;
814 FREETMPS; 989 FREETMPS;
815 LEAVE; 990 LEAVE;
816 PL_runops = runops_trace; 991 PL_runops = runops_trace;
… …
843 SAVETMPS; 1018 SAVETMPS;
844 EXTEND (SP, 3); 1019 EXTEND (SP, 3);
845 PUSHMARK (SP); 1020 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 1021 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 1022 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 1024 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1025 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); 1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1027 SPAGAIN;
853 FREETMPS; 1028 FREETMPS;
854 LEAVE; 1029 LEAVE;
855 PL_runops = runops_trace; 1030 PL_runops = runops_trace;
… …
869 PL_runops = RUNOPS_DEFAULT; 1044 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1045 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1046 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1047 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1048 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1049 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); 1050 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1051 SPAGAIN;
877 FREETMPS; 1052 FREETMPS;
878 LEAVE; 1053 LEAVE;
879 PL_runops = runops_trace; 1054 PL_runops = runops_trace;
… …
885 1060
886 TAINT_NOT; 1061 TAINT_NOT;
887 return 0; 1062 return 0;
888} 1063}
889 1064
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1065static struct coro_cctx *cctx_ssl_cctx;
891/* _cctx_init should be careful, as it could be called at almost any time */ 1066static struct CoroSLF cctx_ssl_frame;
892/* during execution of a perl program */ 1067
1068static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0;
1073}
1074
1075static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{
1078 *frame = cctx_ssl_frame;
1079
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081}
1082
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
893static void NOINLINE 1084static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
895{ 1086{
896 dSP;
897 LOGOP myop;
898
899 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
900 1088
901 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
902 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
903 1091
904 Zero (&myop, 1, LOGOP); 1092 /* we already must be executing an SLF op, there is no other valid way
905 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
907 1096
908 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
909 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1099 cctx_ssl_frame = slf_frame;
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1100
912 PUTBACK; 1101 slf_frame.prepare = slf_prepare_set_stacklevel;
913 PL_op = (OP *)&myop; 1102 slf_frame.check = slf_check_set_stacklevel;
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103}
915 SPAGAIN; 1104
1105/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void
1107transfer_tail (pTHX)
1108{
1109 free_coro_mortal (aTHX);
916} 1110}
917 1111
918/* 1112/*
919 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
920 */ 1114 */
921static void 1115static void
922cctx_run (void *arg) 1116cctx_run (void *arg)
923{ 1117{
1118#ifdef USE_ITHREADS
1119# if CORO_PTHREAD
1120 PERL_SET_CONTEXT (coro_thx);
1121# endif
1122#endif
1123 {
924 dTHX; 1124 dTHX;
925 1125
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1126 /* normally we would need to skip the entersub here */
927 UNLOCK; 1127 /* 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; 1128 /* PL_nop = PL_nop->op_next */
931 1129
932 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
934 1132
1133 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX);
1135
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
938 1139
939 /* 1140 /*
940 * If perl-run returns we assume exit() was being called or the coro 1141 * 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) 1142 * 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 1143 * 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" 1144 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1145 * coroutine as Coro has no such concept
945 */ 1146 */
946 PL_top_env = main_top_env; 1147 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 }
948} 1150}
949 1151
950static coro_cctx * 1152static coro_cctx *
951cctx_new () 1153cctx_new ()
952{ 1154{
953 coro_cctx *cctx; 1155 coro_cctx *cctx;
1156
1157 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx);
1159
1160 cctx->gen = cctx_gen;
1161 cctx->flags = 0;
1162 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1163
1164 return cctx;
1165}
1166
1167/* create a new cctx only suitable as source */
1168static coro_cctx *
1169cctx_new_empty ()
1170{
1171 coro_cctx *cctx = cctx_new ();
1172
1173 cctx->sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175
1176 return cctx;
1177}
1178
1179/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx *
1181cctx_new_run ()
1182{
1183 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1184 void *stack_start;
955 size_t stack_size; 1185 size_t stack_size;
956 1186
957 ++cctx_count;
958 fprintf (stderr, "bp1\n");//D
959
960 Newz (0, cctx, 1, coro_cctx);
961
962#if HAVE_MMAP 1187#if HAVE_MMAP
963 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
964 /* mmap supposedly does allocate-on-write for us */ 1189 /* mmap supposedly does allocate-on-write for us */
965 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
966 1191
967 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
968 { 1193 {
969# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
970 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
971# endif 1196 #endif
972 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
973 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
974 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
975 } 1200 }
976 else 1201 else
977#endif 1202#endif
978 { 1203 {
979 cctx->ssize = coro_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
980 New (0, cctx->sptr, coro_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
981 1206
982 if (!cctx->sptr) 1207 if (!cctx->sptr)
983 { 1208 {
984 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
985 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
986 } 1211 }
987 1212
988 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
989 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
990 } 1215 }
991 1216
992 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
993 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
994 1222
995 return cctx; 1223 return cctx;
996} 1224}
997 1225
… …
1000{ 1228{
1001 if (!cctx) 1229 if (!cctx)
1002 return; 1230 return;
1003 1231
1004 --cctx_count; 1232 --cctx_count;
1233 coro_destroy (&cctx->cctx);
1005 1234
1235 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr)
1237 {
1006#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
1007 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1008#endif 1240 #endif
1009 1241
1010#if HAVE_MMAP 1242#if HAVE_MMAP
1011 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
1012 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
1013 else 1245 else
1014#endif 1246#endif
1015 Safefree (cctx->sptr); 1247 Safefree (cctx->sptr);
1248 }
1016 1249
1017 Safefree (cctx); 1250 Safefree (cctx);
1018} 1251}
1019 1252
1020/* wether this cctx should be destructed */ 1253/* wether this cctx should be destructed */
1021#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1022 1255
1023static coro_cctx * 1256static coro_cctx *
1024cctx_get (pTHX) 1257cctx_get (pTHX)
1025{ 1258{
1026 while (expect_true (cctx_first)) 1259 while (expect_true (cctx_first))
… …
1033 return cctx; 1266 return cctx;
1034 1267
1035 cctx_destroy (cctx); 1268 cctx_destroy (cctx);
1036 } 1269 }
1037 1270
1038 return cctx_new (); 1271 return cctx_new_run ();
1039} 1272}
1040 1273
1041static void 1274static void
1042cctx_put (coro_cctx *cctx) 1275cctx_put (coro_cctx *cctx)
1043{ 1276{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278
1044 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
1045 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
1046 { 1281 {
1047 coro_cctx *first = cctx_first; 1282 coro_cctx *first = cctx_first;
1048 cctx_first = first->next; 1283 cctx_first = first->next;
1049 --cctx_idle; 1284 --cctx_idle;
1050 1285
… …
1059/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1060 1295
1061static void 1296static void
1062transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1063{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1064 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1065 { 1302 {
1066 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1067 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1068 1305
1069 if (expect_false (next->flags & CF_RUNNING)) 1306 if (expect_false (next->flags & CF_RUNNING))
1070 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1071 1308
1072 if (expect_false (next->flags & CF_DESTROYED)) 1309 if (expect_false (next->flags & CF_DESTROYED))
1073 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1074 1311
1075 if (
1076#if PERL_VERSION_ATLEAST (5,9,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1077 expect_false (PL_parser)
1078#else
1079 expect_false (PL_lex_state != LEX_NOTPARSING) 1313 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1080#endif
1081 )
1082 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif
1083 } 1316 }
1084} 1317}
1085 1318
1086/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1087static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1088transfer (pTHX_ struct coro *prev, struct coro *next) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1089{ 1322{
1090 dSTACKLEVEL; 1323 dSTACKLEVEL;
1091 1324
1092 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
1093 if (expect_false (!next)) 1326 if (expect_false (!next))
… …
1099 { 1332 {
1100 coro_cctx *prev__cctx; 1333 coro_cctx *prev__cctx;
1101 1334
1102 if (expect_false (prev->flags & CF_NEW)) 1335 if (expect_false (prev->flags & CF_NEW))
1103 { 1336 {
1104 /* create a new empty context */ 1337 /* create a new empty/source context */
1105 Newz (0, prev->cctx, 1, coro_cctx); 1338 prev->cctx = cctx_new_empty ();
1106 prev->flags &= ~CF_NEW; 1339 prev->flags &= ~CF_NEW;
1107 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1108 } 1341 }
1109 1342
1110 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1111 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1112 1345
1113 LOCK; 1346 /* first get rid of the old state */
1347 save_perl (aTHX_ prev);
1114 1348
1115 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
1116 { 1350 {
1117 /* need to start coroutine */ 1351 /* need to start coroutine */
1118 next->flags &= ~CF_NEW; 1352 next->flags &= ~CF_NEW;
1119 /* first get rid of the old state */
1120 save_perl (aTHX_ prev);
1121 /* setup coroutine call */ 1353 /* setup coroutine call */
1122 coro_setup (aTHX_ next); 1354 coro_setup (aTHX_ next);
1123 } 1355 }
1124 else 1356 else
1357 load_perl (aTHX_ next);
1358
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */
1362 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx
1366 ))
1125 { 1367 {
1126 /* coroutine already started */
1127 save_perl (aTHX_ prev);
1128 load_perl (aTHX_ next);
1129 }
1130
1131 prev__cctx = prev->cctx;
1132
1133 /* possibly "free" the cctx */
1134 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1135 {
1136 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1137 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1138 1370
1139 prev->cctx = 0; 1371 prev->cctx = 0;
1140 1372
1141 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1142 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1157 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1158 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
1159 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1160 } 1392 }
1161 1393
1162 free_coro_mortal (aTHX); 1394 transfer_tail (aTHX);
1163 UNLOCK;
1164
1165 if (expect_false (prev->throw || next->throw))
1166 {
1167 struct coro *coro = SvSTATE (coro_current);
1168
1169 if (coro->throw)
1170 {
1171 SV *exception = coro->throw;
1172 coro->throw = 0;
1173 sv_setsv (ERRSV, exception);
1174 croak (0);
1175 }
1176 }
1177 } 1395 }
1178} 1396}
1179 1397
1180struct transfer_args
1181{
1182 struct coro *prev, *next;
1183};
1184
1185#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1186#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1187 1400
1188/** high level stuff ********************************************************/ 1401/** high level stuff ********************************************************/
1189 1402
1190static int 1403static int
1191coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1192{ 1405{
1193 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1194 return 0; 1407 return 0;
1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1195 1411
1196 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1197 1413
1198 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1199 { 1415 {
1200 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1201 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1202 LOCK;
1203 --coro_nready; 1418 --coro_nready;
1204 UNLOCK;
1205 } 1419 }
1206 else 1420 else
1207 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1208 1422
1209 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1210 { 1424 {
1211 struct coro temp; 1425 struct coro temp;
1212 1426
1213 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1214 croak ("FATAL: tried to destroy currently running coroutine");
1215 1428
1216 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1217 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1218 1431
1219 coro_destroy (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
1220 1433
1221 load_perl (aTHX_ &temp); 1434 load_perl (aTHX_ &temp);
1222 1435
1223 coro->slot = 0; 1436 coro->slot = 0;
1224 } 1437 }
… …
1270# define MGf_DUP 0 1483# define MGf_DUP 0
1271#endif 1484#endif
1272}; 1485};
1273 1486
1274static void 1487static void
1275prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1276{ 1489{
1277 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1278 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1279 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1280} 1493}
1281 1494
1282static void 1495static void
1283api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1284{ 1497{
1285 dTHX;
1286 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1287 1499
1288 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1289 TRANSFER (ta); 1501 TRANSFER (ta, 1);
1502}
1503
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1290} 1525}
1291 1526
1292/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1293 1528
1294static void 1529INLINE void
1295coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1296{ 1531{
1297 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1298} 1533}
1299 1534
1300static SV * 1535INLINE SV *
1301coro_deq (pTHX_ int min_prio) 1536coro_deq (pTHX)
1302{ 1537{
1303 int prio = PRIO_MAX - PRIO_MIN; 1538 int prio;
1304 1539
1305 min_prio -= PRIO_MIN;
1306 if (min_prio < 0)
1307 min_prio = 0;
1308
1309 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1310 if (AvFILLp (coro_ready [prio]) >= 0) 1541 if (AvFILLp (coro_ready [prio]) >= 0)
1311 return av_shift (coro_ready [prio]); 1542 return av_shift (coro_ready [prio]);
1312 1543
1313 return 0; 1544 return 0;
1314} 1545}
1315 1546
1316static int 1547static int
1317api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1318{ 1549{
1319 dTHX;
1320 struct coro *coro; 1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1321 1553
1322 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
1323 coro_sv = SvRV (coro_sv); 1555 coro_sv = SvRV (coro_sv);
1324 1556
1325 coro = SvSTATE (coro_sv); 1557 coro = SvSTATE (coro_sv);
… …
1327 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1328 return 0; 1560 return 0;
1329 1561
1330 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1331 1563
1332 LOCK; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1333 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro);
1334 ++coro_nready; 1568 ++coro_nready;
1335 UNLOCK; 1569
1570 if (sv_hook)
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1336 1587
1337 return 1; 1588 return 1;
1338} 1589}
1339 1590
1340static int 1591static int
1341api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1342{ 1593{
1343 dTHX;
1344 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1345} 1595}
1346 1596
1347static void 1597INLINE void
1348prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1349{ 1599{
1350 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1351 1601
1352 for (;;) 1602 for (;;)
1353 { 1603 {
1354 LOCK;
1355 next_sv = coro_deq (aTHX_ PRIO_MIN); 1604 next_sv = coro_deq (aTHX);
1356 1605
1357 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1358 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1359 { 1608 {
1360 dSP; 1609 dSP;
1361 UNLOCK;
1362 1610
1363 ENTER; 1611 ENTER;
1364 SAVETMPS; 1612 SAVETMPS;
1365 1613
1366 PUSHMARK (SP); 1614 PUSHMARK (SP);
1367 PUTBACK; 1615 PUTBACK;
1368 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1369 1617
1370 FREETMPS; 1618 FREETMPS;
1371 LEAVE; 1619 LEAVE;
1372 continue; 1620 continue;
1373 } 1621 }
1374 1622
1375 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1376 1624
1377 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1378 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1379 { 1627 {
1380 UNLOCK;
1381 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1382 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1383 continue; 1630 continue;
1384 } 1631 }
1385 1632
1386 --coro_nready; 1633 --coro_nready;
1387 UNLOCK;
1388 break; 1634 break;
1389 } 1635 }
1390 1636
1391 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1392 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1393 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1394 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1395 assert (ta->next->flags & CF_READY); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1396 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1397 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1398 1644
1399 LOCK;
1400 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1401 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1402 UNLOCK;
1403} 1647}
1404 1648
1405static void 1649INLINE void
1406prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1407{ 1651{
1408 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1409 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1410} 1654}
1411 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1412static int 1679static int
1413prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1414{ 1681{
1415 if (coro_nready) 1682 struct coro_transfer_args ta;
1416 { 1683
1417 SV *prev = SvRV (coro_current);
1418 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1419 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1420 return 1; 1689 return 1;
1421 } 1690 }
1422 else 1691 else
1423 return 0; 1692 return 0;
1424} 1693}
1425 1694
1426static void
1427api_schedule (void)
1428{
1429 dTHX;
1430 struct transfer_args ta;
1431
1432 prepare_schedule (aTHX_ &ta);
1433 TRANSFER (ta);
1434}
1435
1436static int 1695static int
1437api_cede (void) 1696api_cede_notself (pTHX)
1438{ 1697{
1439 dTHX; 1698 if (coro_nready)
1699 {
1440 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1441 1701
1442 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1443
1444 if (expect_true (ta.prev != ta.next))
1445 {
1446 TRANSFER (ta); 1703 TRANSFER (ta, 1);
1447 return 1; 1704 return 1;
1448 } 1705 }
1449 else 1706 else
1450 return 0; 1707 return 0;
1451} 1708}
1452 1709
1453static int 1710static void
1454api_cede_notself (void)
1455{
1456 dTHX;
1457 struct transfer_args ta;
1458
1459 if (prepare_cede_notself (aTHX_ &ta))
1460 {
1461 TRANSFER (ta);
1462 return 1;
1463 }
1464 else
1465 return 0;
1466}
1467
1468static void
1469api_trace (SV *coro_sv, int flags) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1470{ 1712{
1471 dTHX;
1472 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1473 1714
1474 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1475 { 1716 {
1476 if (!coro->cctx) 1717 if (!coro->cctx)
1477 coro->cctx = cctx_new (); 1718 coro->cctx = cctx_new_run ();
1478 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1479 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1480 1721
1481 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1482 } 1723 }
1483 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1484 { 1725 {
… …
1489 else 1730 else
1490 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1491 } 1732 }
1492} 1733}
1493 1734
1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_rouse_callback (pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG;
1745
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 {
1748 /* first call, set args */
1749 int i;
1750 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752
1753 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756
1757 /* better take a full copy of the arguments */
1758 while (items--)
1759 av_store (av, items, newSVsv (ST (items)));
1760 }
1761
1762 XSRETURN_EMPTY;
1763}
1764
1765static int
1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1767{
1768 SV *data = (SV *)frame->data;
1769
1770 if (CORO_THROW)
1771 return 0;
1772
1773 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1;
1775
1776 /* now push all results on the stack */
1777 {
1778 dSP;
1779 AV *av = (AV *)SvRV (data);
1780 int i;
1781
1782 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785
1786 /* we have stolen the elements, so ste length to zero and free */
1787 AvFILLp (av) = -1;
1788 av_undef (av);
1789
1790 PUTBACK;
1791 }
1792
1793 return 0;
1794}
1795
1796static void
1797slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1798{
1799 SV *cb;
1800
1801 if (items)
1802 cb = arg [0];
1803 else
1804 {
1805 struct coro *coro = SvSTATE_current;
1806
1807 if (!coro->rouse_cb)
1808 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1809
1810 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0;
1812 }
1813
1814 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,");
1818
1819 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG;
1822
1823 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait;
1826 }
1827}
1828
1829static SV *
1830coro_new_rouse_cb (pTHX)
1831{
1832 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1836
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */
1839
1840 SvREFCNT_dec (coro->rouse_cb);
1841 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1842
1843 return cb;
1844}
1845
1846/*****************************************************************************/
1847/* schedule-like-function opcode (SLF) */
1848
1849static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1850static const CV *slf_cv;
1851static SV **slf_argv;
1852static int slf_argc, slf_arga; /* count, allocated */
1853static I32 slf_ax; /* top of stack, for restore */
1854
1855/* this restores the stack in the case we patched the entersub, to */
1856/* recreate the stack frame as perl will on following calls */
1857/* since entersub cleared the stack */
1858static OP *
1859pp_restore (pTHX)
1860{
1861 int i;
1862 SV **SP = PL_stack_base + slf_ax;
1863
1864 PUSHMARK (SP);
1865
1866 EXTEND (SP, slf_argc + 1);
1867
1868 for (i = 0; i < slf_argc; ++i)
1869 PUSHs (sv_2mortal (slf_argv [i]));
1870
1871 PUSHs ((SV *)CvGV (slf_cv));
1872
1873 RETURNOP (slf_restore.op_first);
1874}
1875
1876static void
1877slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1878{
1879 SV **arg = (SV **)slf_frame.data;
1880
1881 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1882}
1883
1884static void
1885slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1886{
1887 if (items != 2)
1888 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1889
1890 frame->prepare = slf_prepare_transfer;
1891 frame->check = slf_check_nop;
1892 frame->data = (void *)arg; /* let's hope it will stay valid */
1893}
1894
1895static void
1896slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{
1898 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop;
1900}
1901
1902static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop;
1907}
1908
1909static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop;
1914}
1915
1916/*
1917 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same
1919 * stack offset
1920 * SLF stands for "schedule-like-function".
1921 */
1922static OP *
1923pp_slf (pTHX)
1924{
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926
1927 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare))
1931 {
1932 /* first iteration */
1933 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */
1936 SV *gv = *sp;
1937
1938 /* do a quick consistency check on the "function" object, and if it isn't */
1939 /* for us, divert to the real entersub */
1940 if (SvTYPE (gv) != SVt_PVGV
1941 || !GvCV (gv)
1942 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1943 return PL_ppaddr[OP_ENTERSUB](aTHX);
1944
1945 if (!(PL_op->op_flags & OPf_STACKED))
1946 {
1947 /* ampersand-form of call, use @_ instead of stack */
1948 AV *av = GvAV (PL_defgv);
1949 arg = AvARRAY (av);
1950 items = AvFILLp (av) + 1;
1951 }
1952
1953 /* now call the init function, which needs to set up slf_frame */
1954 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1955 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1956
1957 /* pop args */
1958 SP = PL_stack_base + POPMARK;
1959
1960 PUTBACK;
1961 }
1962
1963 /* now that we have a slf_frame, interpret it! */
1964 /* we use a callback system not to make the code needlessly */
1965 /* complicated, but so we can run multiple perl coros from one cctx */
1966
1967 do
1968 {
1969 struct coro_transfer_args ta;
1970
1971 slf_frame.prepare (aTHX_ &ta);
1972 TRANSFER (ta, 0);
1973
1974 checkmark = PL_stack_sp - PL_stack_base;
1975 }
1976 while (slf_frame.check (aTHX_ &slf_frame));
1977
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979
1980 /* exception handling */
1981 if (expect_false (CORO_THROW))
1982 {
1983 SV *exception = sv_2mortal (CORO_THROW);
1984
1985 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception);
1987 croak (0);
1988 }
1989
1990 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR)
1993 {
1994 dSP;
1995 SV **bot = PL_stack_base + checkmark;
1996
1997 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */
2000 bot [1] = *sp;
2001
2002 SP = bot + 1;
2003
2004 PUTBACK;
2005 }
2006
2007 return NORMAL;
2008}
2009
2010static void
2011api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2012{
2013 int i;
2014 SV **arg = PL_stack_base + ax;
2015 int items = PL_stack_sp - arg + 1;
2016
2017 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2018
2019 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2020 && PL_op->op_ppaddr != pp_slf)
2021 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2022
2023 CvFLAGS (cv) |= CVf_SLF;
2024 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2025 slf_cv = cv;
2026
2027 /* we patch the op, and then re-run the whole call */
2028 /* we have to put the same argument on the stack for this to work */
2029 /* and this will be done by pp_restore */
2030 slf_restore.op_next = (OP *)&slf_restore;
2031 slf_restore.op_type = OP_CUSTOM;
2032 slf_restore.op_ppaddr = pp_restore;
2033 slf_restore.op_first = PL_op;
2034
2035 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2036
2037 if (PL_op->op_flags & OPf_STACKED)
2038 {
2039 if (items > slf_arga)
2040 {
2041 slf_arga = items;
2042 free (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *));
2044 }
2045
2046 slf_argc = items;
2047
2048 for (i = 0; i < items; ++i)
2049 slf_argv [i] = SvREFCNT_inc (arg [i]);
2050 }
2051 else
2052 slf_argc = 0;
2053
2054 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2056
2057 PL_op = (OP *)&slf_restore;
2058}
2059
2060/*****************************************************************************/
2061/* PerlIO::cede */
2062
2063typedef struct
2064{
2065 PerlIOBuf base;
2066 NV next, every;
2067} PerlIOCede;
2068
2069static IV
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every;
2076
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078}
2079
2080static SV *
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084
2085 return newSVnv (self->every);
2086}
2087
2088static IV
2089PerlIOCede_flush (pTHX_ PerlIO *f)
2090{
2091 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2092 double now = nvtime ();
2093
2094 if (now >= self->next)
2095 {
2096 api_cede (aTHX);
2097 self->next = now + self->every;
2098 }
2099
2100 return PerlIOBuf_flush (aTHX_ f);
2101}
2102
2103static PerlIO_funcs PerlIO_cede =
2104{
2105 sizeof(PerlIO_funcs),
2106 "cede",
2107 sizeof(PerlIOCede),
2108 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2109 PerlIOCede_pushed,
2110 PerlIOBuf_popped,
2111 PerlIOBuf_open,
2112 PerlIOBase_binmode,
2113 PerlIOCede_getarg,
2114 PerlIOBase_fileno,
2115 PerlIOBuf_dup,
2116 PerlIOBuf_read,
2117 PerlIOBuf_unread,
2118 PerlIOBuf_write,
2119 PerlIOBuf_seek,
2120 PerlIOBuf_tell,
2121 PerlIOBuf_close,
2122 PerlIOCede_flush,
2123 PerlIOBuf_fill,
2124 PerlIOBase_eof,
2125 PerlIOBase_error,
2126 PerlIOBase_clearerr,
2127 PerlIOBase_setlinebuf,
2128 PerlIOBuf_get_base,
2129 PerlIOBuf_bufsiz,
2130 PerlIOBuf_get_ptr,
2131 PerlIOBuf_get_cnt,
2132 PerlIOBuf_set_ptrcnt,
2133};
2134
2135/*****************************************************************************/
2136/* Coro::Semaphore & Coro::Signal */
2137
2138static SV *
2139coro_waitarray_new (pTHX_ int count)
2140{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV ();
2143 SV **ary;
2144
2145 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary;
2148 /*AvARRAY (av) = ary;*/
2149 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2150 AvMAX (av) = 1;
2151 AvFILLp (av) = 0;
2152 ary [0] = newSViv (count);
2153
2154 return newRV_noinc ((SV *)av);
2155}
2156
2157/* semaphore */
2158
2159static void
2160coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2161{
2162 SV *count_sv = AvARRAY (av)[0];
2163 IV count = SvIVX (count_sv);
2164
2165 count += adjust;
2166 SvIVX (count_sv) = count;
2167
2168 /* now wake up as many waiters as are expected to lock */
2169 while (count > 0 && AvFILLp (av) > 0)
2170 {
2171 SV *cb;
2172
2173 /* swap first two elements so we can shift a waiter */
2174 AvARRAY (av)[0] = AvARRAY (av)[1];
2175 AvARRAY (av)[1] = count_sv;
2176 cb = av_shift (av);
2177
2178 if (SvOBJECT (cb))
2179 {
2180 api_ready (aTHX_ cb);
2181 --count;
2182 }
2183 else if (SvTYPE (cb) == SVt_PVCV)
2184 {
2185 dSP;
2186 PUSHMARK (SP);
2187 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2188 PUTBACK;
2189 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2190 }
2191
2192 SvREFCNT_dec (cb);
2193 }
2194}
2195
2196static void
2197coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2198{
2199 /* call $sem->adjust (0) to possibly wake up some other waiters */
2200 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2201}
2202
2203static int
2204slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2205{
2206 AV *av = (AV *)frame->data;
2207 SV *count_sv = AvARRAY (av)[0];
2208
2209 /* if we are about to throw, don't actually acquire the lock, just throw */
2210 if (CORO_THROW)
2211 return 0;
2212 else if (SvIVX (count_sv) > 0)
2213 {
2214 SvSTATE_current->on_destroy = 0;
2215
2216 if (acquire)
2217 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2218 else
2219 coro_semaphore_adjust (aTHX_ av, 0);
2220
2221 return 0;
2222 }
2223 else
2224 {
2225 int i;
2226 /* if we were woken up but can't down, we look through the whole */
2227 /* waiters list and only add us if we aren't in there already */
2228 /* this avoids some degenerate memory usage cases */
2229
2230 for (i = 1; i <= AvFILLp (av); ++i)
2231 if (AvARRAY (av)[i] == SvRV (coro_current))
2232 return 1;
2233
2234 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2235 return 1;
2236 }
2237}
2238
2239static int
2240slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2241{
2242 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2243}
2244
2245static int
2246slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2247{
2248 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2249}
2250
2251static void
2252slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2253{
2254 AV *av = (AV *)SvRV (arg [0]);
2255
2256 if (SvIVX (AvARRAY (av)[0]) > 0)
2257 {
2258 frame->data = (void *)av;
2259 frame->prepare = prepare_nop;
2260 }
2261 else
2262 {
2263 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2264
2265 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2266 frame->prepare = prepare_schedule;
2267
2268 /* to avoid race conditions when a woken-up coro gets terminated */
2269 /* we arrange for a temporary on_destroy that calls adjust (0) */
2270 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2271 }
2272}
2273
2274static void
2275slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2276{
2277 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2278 frame->check = slf_check_semaphore_down;
2279}
2280
2281static void
2282slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 if (items >= 2)
2285 {
2286 /* callback form */
2287 AV *av = (AV *)SvRV (arg [0]);
2288 HV *st;
2289 GV *gvp;
2290 CV *cb_cv = sv_2cv (arg [1], &st, &gvp, 0);
2291
2292 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2293
2294 if (SvIVX (AvARRAY (av)[0]) > 0)
2295 coro_semaphore_adjust (aTHX_ av, 0);
2296
2297 frame->prepare = prepare_nop;
2298 frame->check = slf_check_nop;
2299 }
2300 else
2301 {
2302 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2303 frame->check = slf_check_semaphore_wait;
2304 }
2305}
2306
2307/* signal */
2308
2309static void
2310coro_signal_wake (pTHX_ AV *av, int count)
2311{
2312 SvIVX (AvARRAY (av)[0]) = 0;
2313
2314 /* now signal count waiters */
2315 while (count > 0 && AvFILLp (av) > 0)
2316 {
2317 SV *cb;
2318
2319 /* swap first two elements so we can shift a waiter */
2320 cb = AvARRAY (av)[0];
2321 AvARRAY (av)[0] = AvARRAY (av)[1];
2322 AvARRAY (av)[1] = cb;
2323
2324 cb = av_shift (av);
2325
2326 api_ready (aTHX_ cb);
2327 sv_setiv (cb, 0); /* signal waiter */
2328 SvREFCNT_dec (cb);
2329
2330 --count;
2331 }
2332}
2333
2334static int
2335slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2336{
2337 /* if we are about to throw, also stop waiting */
2338 return SvROK ((SV *)frame->data) && !CORO_THROW;
2339}
2340
2341static void
2342slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2343{
2344 AV *av = (AV *)SvRV (arg [0]);
2345
2346 if (SvIVX (AvARRAY (av)[0]))
2347 {
2348 SvIVX (AvARRAY (av)[0]) = 0;
2349 frame->prepare = prepare_nop;
2350 frame->check = slf_check_nop;
2351 }
2352 else
2353 {
2354 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2355
2356 av_push (av, waiter);
2357
2358 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2359 frame->prepare = prepare_schedule;
2360 frame->check = slf_check_signal_wait;
2361 }
2362}
2363
2364/*****************************************************************************/
2365/* Coro::AIO */
2366
2367#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2368
2369/* helper storage struct */
2370struct io_state
2371{
2372 int errorno;
2373 I32 laststype; /* U16 in 5.10.0 */
2374 int laststatval;
2375 Stat_t statcache;
2376};
2377
2378static void
2379coro_aio_callback (pTHX_ CV *cv)
2380{
2381 dXSARGS;
2382 AV *state = (AV *)GENSUB_ARG;
2383 SV *coro = av_pop (state);
2384 SV *data_sv = newSV (sizeof (struct io_state));
2385
2386 av_extend (state, items);
2387
2388 sv_upgrade (data_sv, SVt_PV);
2389 SvCUR_set (data_sv, sizeof (struct io_state));
2390 SvPOK_only (data_sv);
2391
2392 {
2393 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2394
2395 data->errorno = errno;
2396 data->laststype = PL_laststype;
2397 data->laststatval = PL_laststatval;
2398 data->statcache = PL_statcache;
2399 }
2400
2401 /* now build the result vector out of all the parameters and the data_sv */
2402 {
2403 int i;
2404
2405 for (i = 0; i < items; ++i)
2406 av_push (state, SvREFCNT_inc_NN (ST (i)));
2407 }
2408
2409 av_push (state, data_sv);
2410
2411 api_ready (aTHX_ coro);
2412 SvREFCNT_dec (coro);
2413 SvREFCNT_dec ((AV *)state);
2414}
2415
2416static int
2417slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2418{
2419 AV *state = (AV *)frame->data;
2420
2421 /* if we are about to throw, return early */
2422 /* this does not cancel the aio request, but at least */
2423 /* it quickly returns */
2424 if (CORO_THROW)
2425 return 0;
2426
2427 /* one element that is an RV? repeat! */
2428 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2429 return 1;
2430
2431 /* restore status */
2432 {
2433 SV *data_sv = av_pop (state);
2434 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2435
2436 errno = data->errorno;
2437 PL_laststype = data->laststype;
2438 PL_laststatval = data->laststatval;
2439 PL_statcache = data->statcache;
2440
2441 SvREFCNT_dec (data_sv);
2442 }
2443
2444 /* push result values */
2445 {
2446 dSP;
2447 int i;
2448
2449 EXTEND (SP, AvFILLp (state) + 1);
2450 for (i = 0; i <= AvFILLp (state); ++i)
2451 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2452
2453 PUTBACK;
2454 }
2455
2456 return 0;
2457}
2458
2459static void
2460slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2463 SV *coro_hv = SvRV (coro_current);
2464 struct coro *coro = SvSTATE_hv (coro_hv);
2465
2466 /* put our coroutine id on the state arg */
2467 av_push (state, SvREFCNT_inc_NN (coro_hv));
2468
2469 /* first see whether we have a non-zero priority and set it as AIO prio */
2470 if (coro->prio)
2471 {
2472 dSP;
2473
2474 static SV *prio_cv;
2475 static SV *prio_sv;
2476
2477 if (expect_false (!prio_cv))
2478 {
2479 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2480 prio_sv = newSViv (0);
2481 }
2482
2483 PUSHMARK (SP);
2484 sv_setiv (prio_sv, coro->prio);
2485 XPUSHs (prio_sv);
2486
2487 PUTBACK;
2488 call_sv (prio_cv, G_VOID | G_DISCARD);
2489 }
2490
2491 /* now call the original request */
2492 {
2493 dSP;
2494 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2495 int i;
2496
2497 PUSHMARK (SP);
2498
2499 /* first push all args to the stack */
2500 EXTEND (SP, items + 1);
2501
2502 for (i = 0; i < items; ++i)
2503 PUSHs (arg [i]);
2504
2505 /* now push the callback closure */
2506 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2507
2508 /* now call the AIO function - we assume our request is uncancelable */
2509 PUTBACK;
2510 call_sv ((SV *)req, G_VOID | G_DISCARD);
2511 }
2512
2513 /* now that the requets is going, we loop toll we have a result */
2514 frame->data = (void *)state;
2515 frame->prepare = prepare_schedule;
2516 frame->check = slf_check_aio_req;
2517}
2518
2519static void
2520coro_aio_req_xs (pTHX_ CV *cv)
2521{
2522 dXSARGS;
2523
2524 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2525
2526 XSRETURN_EMPTY;
2527}
2528
2529/*****************************************************************************/
2530
1494MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2531MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1495 2532
1496PROTOTYPES: DISABLE 2533PROTOTYPES: DISABLE
1497 2534
1498BOOT: 2535BOOT:
1499{ 2536{
1500#ifdef USE_ITHREADS 2537#ifdef USE_ITHREADS
1501 MUTEX_INIT (&coro_mutex); 2538# if CORO_PTHREAD
2539 coro_thx = PERL_GET_CONTEXT;
2540# endif
1502#endif 2541#endif
1503 BOOT_PAGESIZE; 2542 BOOT_PAGESIZE;
1504 2543
1505 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2544 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1506 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2545 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1507 2546
2547 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2548 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2549 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2550
1508 hv_sig = coro_get_hv ("SIG", TRUE); 2551 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1509 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2552 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1510 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2553 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1511
1512 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1513 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1514 2554
1515 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2555 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1516 2556
1517 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2557 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1518 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2558 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1523 main_top_env = PL_top_env; 2563 main_top_env = PL_top_env;
1524 2564
1525 while (main_top_env->je_prev) 2565 while (main_top_env->je_prev)
1526 main_top_env = main_top_env->je_prev; 2566 main_top_env = main_top_env->je_prev;
1527 2567
2568 {
2569 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2570
2571 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2572 hv_store_ent (PL_custom_op_names, slf,
2573 newSVpv ("coro_slf", 0), 0);
2574
2575 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2576 hv_store_ent (PL_custom_op_descs, slf,
2577 newSVpv ("coro schedule like function", 0), 0);
2578 }
2579
1528 coroapi.ver = CORO_API_VERSION; 2580 coroapi.ver = CORO_API_VERSION;
2581 coroapi.rev = CORO_API_REVISION;
2582
1529 coroapi.transfer = api_transfer; 2583 coroapi.transfer = api_transfer;
2584
2585 coroapi.sv_state = SvSTATE_;
2586 coroapi.execute_slf = api_execute_slf;
2587 coroapi.prepare_nop = prepare_nop;
2588 coroapi.prepare_schedule = prepare_schedule;
2589 coroapi.prepare_cede = prepare_cede;
2590 coroapi.prepare_cede_notself = prepare_cede_notself;
2591
2592 {
2593 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2594
2595 if (!svp) croak ("Time::HiRes is required");
2596 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2597
2598 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2599 }
1530 2600
1531 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2601 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1532} 2602}
1533 2603
1534SV * 2604SV *
1535new (char *klass, ...) 2605new (char *klass, ...)
1536 CODE: 2606 CODE:
1537{ 2607{
1538 struct coro *coro; 2608 struct coro *coro;
2609 MAGIC *mg;
1539 HV *hv; 2610 HV *hv;
1540 int i; 2611 int i;
1541 2612
1542 Newz (0, coro, 1, struct coro); 2613 Newz (0, coro, 1, struct coro);
1543 coro->args = newAV (); 2614 coro->args = newAV ();
… …
1546 if (coro_first) coro_first->prev = coro; 2617 if (coro_first) coro_first->prev = coro;
1547 coro->next = coro_first; 2618 coro->next = coro_first;
1548 coro_first = coro; 2619 coro_first = coro;
1549 2620
1550 coro->hv = hv = newHV (); 2621 coro->hv = hv = newHV ();
1551 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2622 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2623 mg->mg_flags |= MGf_DUP;
1552 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2624 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1553 2625
1554 av_extend (coro->args, items - 1); 2626 av_extend (coro->args, items - 1);
1555 for (i = 1; i < items; i++) 2627 for (i = 1; i < items; i++)
1556 av_push (coro->args, newSVsv (ST (i))); 2628 av_push (coro->args, newSVsv (ST (i)));
1557} 2629}
1558 OUTPUT: 2630 OUTPUT:
1559 RETVAL 2631 RETVAL
1560 2632
1561# these not obviously related functions are all rolled into the same xs
1562# function to increase chances that they all will call transfer with the same
1563# stack offset
1564void 2633void
1565_set_stacklevel (...) 2634transfer (...)
1566 ALIAS: 2635 PROTOTYPE: $$
1567 Coro::State::transfer = 1 2636 CODE:
1568 Coro::schedule = 2 2637 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1569 Coro::cede = 3
1570 Coro::cede_notself = 4
1571 CODE:
1572{
1573 struct transfer_args ta;
1574
1575 switch (ix)
1576 {
1577 case 0:
1578 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1579 ta.next = 0;
1580 break;
1581
1582 case 1:
1583 if (items != 2)
1584 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1585
1586 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1587 break;
1588
1589 case 2:
1590 prepare_schedule (aTHX_ &ta);
1591 break;
1592
1593 case 3:
1594 prepare_cede (aTHX_ &ta);
1595 break;
1596
1597 case 4:
1598 if (!prepare_cede_notself (aTHX_ &ta))
1599 XSRETURN_EMPTY;
1600
1601 break;
1602 }
1603
1604 BARRIER;
1605 TRANSFER (ta);
1606
1607 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1608 XSRETURN_YES;
1609}
1610 2638
1611bool 2639bool
1612_destroy (SV *coro_sv) 2640_destroy (SV *coro_sv)
1613 CODE: 2641 CODE:
1614 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2642 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1615 OUTPUT: 2643 OUTPUT:
1616 RETVAL 2644 RETVAL
1617 2645
1618void 2646void
1619_exit (code) 2647_exit (int code)
1620 int code
1621 PROTOTYPE: $ 2648 PROTOTYPE: $
1622 CODE: 2649 CODE:
1623 _exit (code); 2650 _exit (code);
1624 2651
1625int 2652int
1626cctx_stacksize (int new_stacksize = 0) 2653cctx_stacksize (int new_stacksize = 0)
2654 PROTOTYPE: ;$
1627 CODE: 2655 CODE:
1628 RETVAL = coro_stacksize; 2656 RETVAL = cctx_stacksize;
1629 if (new_stacksize) 2657 if (new_stacksize)
2658 {
1630 coro_stacksize = new_stacksize; 2659 cctx_stacksize = new_stacksize;
2660 ++cctx_gen;
2661 }
1631 OUTPUT: 2662 OUTPUT:
1632 RETVAL 2663 RETVAL
1633 2664
1634int 2665int
2666cctx_max_idle (int max_idle = 0)
2667 PROTOTYPE: ;$
2668 CODE:
2669 RETVAL = cctx_max_idle;
2670 if (max_idle > 1)
2671 cctx_max_idle = max_idle;
2672 OUTPUT:
2673 RETVAL
2674
2675int
1635cctx_count () 2676cctx_count ()
2677 PROTOTYPE:
1636 CODE: 2678 CODE:
1637 RETVAL = cctx_count; 2679 RETVAL = cctx_count;
1638 OUTPUT: 2680 OUTPUT:
1639 RETVAL 2681 RETVAL
1640 2682
1641int 2683int
1642cctx_idle () 2684cctx_idle ()
2685 PROTOTYPE:
1643 CODE: 2686 CODE:
1644 RETVAL = cctx_idle; 2687 RETVAL = cctx_idle;
1645 OUTPUT: 2688 OUTPUT:
1646 RETVAL 2689 RETVAL
1647 2690
1648void 2691void
1649list () 2692list ()
2693 PROTOTYPE:
1650 PPCODE: 2694 PPCODE:
1651{ 2695{
1652 struct coro *coro; 2696 struct coro *coro;
1653 for (coro = coro_first; coro; coro = coro->next) 2697 for (coro = coro_first; coro; coro = coro->next)
1654 if (coro->hv) 2698 if (coro->hv)
… …
1659call (Coro::State coro, SV *coderef) 2703call (Coro::State coro, SV *coderef)
1660 ALIAS: 2704 ALIAS:
1661 eval = 1 2705 eval = 1
1662 CODE: 2706 CODE:
1663{ 2707{
1664 if (coro->mainstack) 2708 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1665 { 2709 {
1666 struct coro temp; 2710 struct coro temp;
1667 2711
1668 if (!(coro->flags & CF_RUNNING)) 2712 if (!(coro->flags & CF_RUNNING))
1669 { 2713 {
2714 PUTBACK;
1670 save_perl (aTHX_ &temp); 2715 save_perl (aTHX_ &temp);
1671 load_perl (aTHX_ coro); 2716 load_perl (aTHX_ coro);
1672 } 2717 }
1673 2718
1674 { 2719 {
1675 dSP; 2720 dSP;
1676 ENTER; 2721 ENTER;
1677 SAVETMPS; 2722 SAVETMPS;
2723 PUTBACK;
2724 PUSHSTACK;
1678 PUSHMARK (SP); 2725 PUSHMARK (SP);
1679 PUTBACK;
1680 2726
1681 if (ix) 2727 if (ix)
1682 eval_sv (coderef, 0); 2728 eval_sv (coderef, 0);
1683 else 2729 else
1684 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2730 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1685 2731
2732 POPSTACK;
1686 SPAGAIN; 2733 SPAGAIN;
1687 FREETMPS; 2734 FREETMPS;
1688 LEAVE; 2735 LEAVE;
1689 PUTBACK; 2736 PUTBACK;
1690 } 2737 }
1691 2738
1692 if (!(coro->flags & CF_RUNNING)) 2739 if (!(coro->flags & CF_RUNNING))
1693 { 2740 {
1694 save_perl (aTHX_ coro); 2741 save_perl (aTHX_ coro);
1695 load_perl (aTHX_ &temp); 2742 load_perl (aTHX_ &temp);
2743 SPAGAIN;
1696 } 2744 }
1697 } 2745 }
1698} 2746}
1699 2747
1700SV * 2748SV *
… …
1709 RETVAL = boolSV (coro->flags & ix); 2757 RETVAL = boolSV (coro->flags & ix);
1710 OUTPUT: 2758 OUTPUT:
1711 RETVAL 2759 RETVAL
1712 2760
1713void 2761void
2762throw (Coro::State self, SV *throw = &PL_sv_undef)
2763 PROTOTYPE: $;$
2764 CODE:
2765{
2766 struct coro *current = SvSTATE_current;
2767 SV **throwp = self == current ? &CORO_THROW : &self->except;
2768 SvREFCNT_dec (*throwp);
2769 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2770}
2771
2772void
1714api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2774 PROTOTYPE: $;$
2775 C_ARGS: aTHX_ coro, flags
1715 2776
1716SV * 2777SV *
1717has_stack (Coro::State coro) 2778has_cctx (Coro::State coro)
1718 PROTOTYPE: $ 2779 PROTOTYPE: $
1719 CODE: 2780 CODE:
1720 RETVAL = boolSV (!!coro->cctx); 2781 RETVAL = boolSV (!!coro->cctx);
1721 OUTPUT: 2782 OUTPUT:
1722 RETVAL 2783 RETVAL
… …
1727 CODE: 2788 CODE:
1728 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2789 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1729 OUTPUT: 2790 OUTPUT:
1730 RETVAL 2791 RETVAL
1731 2792
1732IV 2793UV
1733rss (Coro::State coro) 2794rss (Coro::State coro)
1734 PROTOTYPE: $ 2795 PROTOTYPE: $
1735 ALIAS: 2796 ALIAS:
1736 usecount = 1 2797 usecount = 1
1737 CODE: 2798 CODE:
… …
1741 case 1: RETVAL = coro->usecount; break; 2802 case 1: RETVAL = coro->usecount; break;
1742 } 2803 }
1743 OUTPUT: 2804 OUTPUT:
1744 RETVAL 2805 RETVAL
1745 2806
2807void
2808force_cctx ()
2809 PROTOTYPE:
2810 CODE:
2811 SvSTATE_current->cctx->idle_sp = 0;
2812
2813void
2814swap_defsv (Coro::State self)
2815 PROTOTYPE: $
2816 ALIAS:
2817 swap_defav = 1
2818 CODE:
2819 if (!self->slot)
2820 croak ("cannot swap state with coroutine that has no saved state,");
2821 else
2822 {
2823 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2824 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2825
2826 SV *tmp = *src; *src = *dst; *dst = tmp;
2827 }
2828
1746 2829
1747MODULE = Coro::State PACKAGE = Coro 2830MODULE = Coro::State PACKAGE = Coro
1748 2831
1749BOOT: 2832BOOT:
1750{ 2833{
1751 int i; 2834 int i;
1752 2835
1753 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1754 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1755 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2836 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2837 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2838 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1756 2839
1757 coro_current = coro_get_sv ("Coro::current", FALSE); 2840 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1758 SvREADONLY_on (coro_current); 2841 SvREADONLY_on (coro_current);
1759 2842
1760 coro_stash = gv_stashpv ("Coro", TRUE); 2843 coro_stash = gv_stashpv ("Coro", TRUE);
1761 2844
1762 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2845 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1768 2851
1769 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2852 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1770 coro_ready[i] = newAV (); 2853 coro_ready[i] = newAV ();
1771 2854
1772 { 2855 {
1773 SV *sv = perl_get_sv ("Coro::API", TRUE); 2856 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1774 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1775 2857
1776 coroapi.schedule = api_schedule; 2858 coroapi.schedule = api_schedule;
1777 coroapi.cede = api_cede; 2859 coroapi.cede = api_cede;
1778 coroapi.cede_notself = api_cede_notself; 2860 coroapi.cede_notself = api_cede_notself;
1779 coroapi.ready = api_ready; 2861 coroapi.ready = api_ready;
1780 coroapi.is_ready = api_is_ready; 2862 coroapi.is_ready = api_is_ready;
1781 coroapi.nready = &coro_nready; 2863 coroapi.nready = coro_nready;
1782 coroapi.current = coro_current; 2864 coroapi.current = coro_current;
1783 2865
1784 GCoroAPI = &coroapi; 2866 /*GCoroAPI = &coroapi;*/
1785 sv_setiv (sv, (IV)&coroapi); 2867 sv_setiv (sv, (IV)&coroapi);
1786 SvREADONLY_on (sv); 2868 SvREADONLY_on (sv);
1787 } 2869 }
1788} 2870}
2871
2872void
2873schedule (...)
2874 CODE:
2875 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2876
2877void
2878cede (...)
2879 CODE:
2880 CORO_EXECUTE_SLF_XS (slf_init_cede);
2881
2882void
2883cede_notself (...)
2884 CODE:
2885 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1789 2886
1790void 2887void
1791_set_current (SV *current) 2888_set_current (SV *current)
1792 PROTOTYPE: $ 2889 PROTOTYPE: $
1793 CODE: 2890 CODE:
1794 SvREFCNT_dec (SvRV (coro_current)); 2891 SvREFCNT_dec (SvRV (coro_current));
1795 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2892 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2893
2894void
2895_set_readyhook (SV *hook)
2896 PROTOTYPE: $
2897 CODE:
2898 SvREFCNT_dec (coro_readyhook);
2899 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1796 2900
1797int 2901int
1798prio (Coro::State coro, int newprio = 0) 2902prio (Coro::State coro, int newprio = 0)
2903 PROTOTYPE: $;$
1799 ALIAS: 2904 ALIAS:
1800 nice = 1 2905 nice = 1
1801 CODE: 2906 CODE:
1802{ 2907{
1803 RETVAL = coro->prio; 2908 RETVAL = coro->prio;
… …
1818 2923
1819SV * 2924SV *
1820ready (SV *self) 2925ready (SV *self)
1821 PROTOTYPE: $ 2926 PROTOTYPE: $
1822 CODE: 2927 CODE:
1823 RETVAL = boolSV (api_ready (self)); 2928 RETVAL = boolSV (api_ready (aTHX_ self));
1824 OUTPUT: 2929 OUTPUT:
1825 RETVAL 2930 RETVAL
1826 2931
1827int 2932int
1828nready (...) 2933nready (...)
… …
1830 CODE: 2935 CODE:
1831 RETVAL = coro_nready; 2936 RETVAL = coro_nready;
1832 OUTPUT: 2937 OUTPUT:
1833 RETVAL 2938 RETVAL
1834 2939
1835void
1836throw (Coro::State self, SV *throw = &PL_sv_undef)
1837 PROTOTYPE: $;$
1838 CODE:
1839 SvREFCNT_dec (self->throw);
1840 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1841
1842# for async_pool speedup 2940# for async_pool speedup
1843void 2941void
1844_pool_1 (SV *cb) 2942_pool_1 (SV *cb)
1845 CODE: 2943 CODE:
1846{ 2944{
1847 struct coro *coro = SvSTATE (coro_current);
1848 HV *hv = (HV *)SvRV (coro_current); 2945 HV *hv = (HV *)SvRV (coro_current);
2946 struct coro *coro = SvSTATE_hv ((SV *)hv);
1849 AV *defav = GvAV (PL_defgv); 2947 AV *defav = GvAV (PL_defgv);
1850 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2948 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1851 AV *invoke_av; 2949 AV *invoke_av;
1852 int i, len; 2950 int i, len;
1853 2951
1854 if (!invoke) 2952 if (!invoke)
2953 {
2954 SV *old = PL_diehook;
2955 PL_diehook = 0;
2956 SvREFCNT_dec (old);
1855 croak ("\3async_pool terminate\2\n"); 2957 croak ("\3async_pool terminate\2\n");
2958 }
1856 2959
1857 SvREFCNT_dec (coro->saved_deffh); 2960 SvREFCNT_dec (coro->saved_deffh);
1858 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2961 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1859 2962
1860 hv_store (hv, "desc", sizeof ("desc") - 1, 2963 hv_store (hv, "desc", sizeof ("desc") - 1,
1861 newSVpvn (strpair ("[async_pool]")), 0); 2964 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1862 2965
1863 invoke_av = (AV *)SvRV (invoke); 2966 invoke_av = (AV *)SvRV (invoke);
1864 len = av_len (invoke_av); 2967 len = av_len (invoke_av);
1865 2968
1866 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2969 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1867 2970
1868 if (len > 0) 2971 if (len > 0)
1869 { 2972 {
1870 av_fill (defav, len - 1); 2973 av_fill (defav, len - 1);
1871 for (i = 0; i < len; ++i) 2974 for (i = 0; i < len; ++i)
1872 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2975 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1873 } 2976 }
1874
1875 SvREFCNT_dec (invoke);
1876} 2977}
1877 2978
1878void 2979void
1879_pool_2 (SV *cb) 2980_pool_2 (SV *cb)
1880 CODE: 2981 CODE:
1881{ 2982{
1882 struct coro *coro = SvSTATE (coro_current); 2983 HV *hv = (HV *)SvRV (coro_current);
2984 struct coro *coro = SvSTATE_hv ((SV *)hv);
1883 2985
1884 sv_setsv (cb, &PL_sv_undef); 2986 sv_setsv (cb, &PL_sv_undef);
1885 2987
1886 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2988 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1887 coro->saved_deffh = 0; 2989 coro->saved_deffh = 0;
1888 2990
1889 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2991 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1890 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2992 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2993 {
2994 SV *old = PL_diehook;
2995 PL_diehook = 0;
2996 SvREFCNT_dec (old);
1891 croak ("\3async_pool terminate\2\n"); 2997 croak ("\3async_pool terminate\2\n");
2998 }
1892 2999
1893 av_clear (GvAV (PL_defgv)); 3000 av_clear (GvAV (PL_defgv));
1894 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 3001 hv_store (hv, "desc", sizeof ("desc") - 1,
1895 newSVpvn (strpair ("[async_pool idle]")), 0); 3002 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1896 3003
1897 coro->prio = 0; 3004 coro->prio = 0;
1898 3005
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3006 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (coro_current, 0); 3007 api_trace (aTHX_ coro_current, 0);
1901 3008
1902 av_push (av_async_pool, newSVsv (coro_current)); 3009 av_push (av_async_pool, newSVsv (coro_current));
1903} 3010}
1904 3011
1905
1906MODULE = Coro::State PACKAGE = Coro::AIO
1907
1908SV * 3012SV *
1909_get_state () 3013rouse_cb ()
3014 PROTOTYPE:
1910 CODE: 3015 CODE:
1911{ 3016 RETVAL = coro_new_rouse_cb (aTHX);
1912 struct io_state *data;
1913
1914 RETVAL = newSV (sizeof (struct io_state));
1915 data = (struct io_state *)SvPVX (RETVAL);
1916 SvCUR_set (RETVAL, sizeof (struct io_state));
1917 SvPOK_only (RETVAL);
1918
1919 data->errorno = errno;
1920 data->laststype = PL_laststype;
1921 data->laststatval = PL_laststatval;
1922 data->statcache = PL_statcache;
1923}
1924 OUTPUT: 3017 OUTPUT:
1925 RETVAL 3018 RETVAL
1926 3019
1927void 3020void
1928_set_state (char *data_) 3021rouse_wait (...)
1929 PROTOTYPE: $ 3022 PROTOTYPE: ;$
3023 PPCODE:
3024 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3025
3026
3027MODULE = Coro::State PACKAGE = PerlIO::cede
3028
3029BOOT:
3030 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3031
3032
3033MODULE = Coro::State PACKAGE = Coro::Semaphore
3034
3035SV *
3036new (SV *klass, SV *count = 0)
1930 CODE: 3037 CODE:
1931{ 3038 RETVAL = sv_bless (
1932 struct io_state *data = (void *)data_; 3039 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3040 GvSTASH (CvGV (cv))
3041 );
3042 OUTPUT:
3043 RETVAL
1933 3044
1934 errno = data->errorno; 3045# helper for Coro::Channel
1935 PL_laststype = data->laststype; 3046SV *
1936 PL_laststatval = data->laststatval; 3047_alloc (int count)
1937 PL_statcache = data->statcache; 3048 CODE:
1938} 3049 RETVAL = coro_waitarray_new (aTHX_ count);
3050 OUTPUT:
3051 RETVAL
1939 3052
3053SV *
3054count (SV *self)
3055 CODE:
3056 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3057 OUTPUT:
3058 RETVAL
3059
3060void
3061up (SV *self, int adjust = 1)
3062 ALIAS:
3063 adjust = 1
3064 CODE:
3065 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3066
3067void
3068down (...)
3069 CODE:
3070 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3071
3072void
3073wait (...)
3074 CODE:
3075 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3076
3077void
3078try (SV *self)
3079 PPCODE:
3080{
3081 AV *av = (AV *)SvRV (self);
3082 SV *count_sv = AvARRAY (av)[0];
3083 IV count = SvIVX (count_sv);
3084
3085 if (count > 0)
3086 {
3087 --count;
3088 SvIVX (count_sv) = count;
3089 XSRETURN_YES;
3090 }
3091 else
3092 XSRETURN_NO;
3093}
3094
3095void
3096waiters (SV *self)
3097 PPCODE:
3098{
3099 AV *av = (AV *)SvRV (self);
3100 int wcount = AvFILLp (av) + 1 - 1;
3101
3102 if (GIMME_V == G_SCALAR)
3103 XPUSHs (sv_2mortal (newSViv (wcount)));
3104 else
3105 {
3106 int i;
3107 EXTEND (SP, wcount);
3108 for (i = 1; i <= wcount; ++i)
3109 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3110 }
3111}
3112
3113MODULE = Coro::State PACKAGE = Coro::Signal
3114
3115SV *
3116new (SV *klass)
3117 CODE:
3118 RETVAL = sv_bless (
3119 coro_waitarray_new (aTHX_ 0),
3120 GvSTASH (CvGV (cv))
3121 );
3122 OUTPUT:
3123 RETVAL
3124
3125void
3126wait (...)
3127 CODE:
3128 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3129
3130void
3131broadcast (SV *self)
3132 CODE:
3133{
3134 AV *av = (AV *)SvRV (self);
3135 coro_signal_wake (aTHX_ av, AvFILLp (av));
3136}
3137
3138void
3139send (SV *self)
3140 CODE:
3141{
3142 AV *av = (AV *)SvRV (self);
3143
3144 if (AvFILLp (av))
3145 coro_signal_wake (aTHX_ av, 1);
3146 else
3147 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3148}
3149
3150IV
3151awaited (SV *self)
3152 CODE:
3153 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3154 OUTPUT:
3155 RETVAL
3156
3157
3158MODULE = Coro::State PACKAGE = Coro::AnyEvent
3159
3160BOOT:
3161 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3162
3163void
3164_schedule (...)
3165 CODE:
3166{
3167 static int incede;
3168
3169 api_cede_notself (aTHX);
3170
3171 ++incede;
3172 while (coro_nready >= incede && api_cede (aTHX))
3173 ;
3174
3175 sv_setsv (sv_activity, &PL_sv_undef);
3176 if (coro_nready >= incede)
3177 {
3178 PUSHMARK (SP);
3179 PUTBACK;
3180 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3181 }
3182
3183 --incede;
3184}
3185
3186
3187MODULE = Coro::State PACKAGE = Coro::AIO
3188
3189void
3190_register (char *target, char *proto, SV *req)
3191 CODE:
3192{
3193 HV *st;
3194 GV *gvp;
3195 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3196 /* newXSproto doesn't return the CV on 5.8 */
3197 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3198 sv_setpv ((SV *)slf_cv, proto);
3199 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3200}
3201

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