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Comparing Coro/Coro/State.xs (file contents):
Revision 1.159 by root, Sat Sep 22 14:42:56 2007 UTC vs.
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 120 * portable way as possible. */
95#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
96#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
97 126
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 128
100#if __GNUC__ >= 3 129#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
103#else 133#else
104# define attribute(x) 134# define attribute(x)
105# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
106#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
107 141
108#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
109 143
110#include "CoroAPI.h" 144#include "CoroAPI.h"
111 145
112#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 147# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 150#endif
120 151
121/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
122struct io_state 153struct io_state
123{ 154{
155 AV *res;
124 int errorno; 156 int errorno;
125 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
126 int laststatval; 158 int laststatval;
127 Stat_t statcache; 159 Stat_t statcache;
128}; 160};
129 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 168static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171
172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
136 177
137/* async_pool helper stuff */ 178/* async_pool helper stuff */
138static SV *sv_pool_rss; 179static SV *sv_pool_rss;
139static SV *sv_pool_size; 180static SV *sv_pool_size;
140static AV *av_async_pool; 181static AV *av_async_pool;
141 182
183/* Coro::AnyEvent */
184static SV *sv_activity;
185
142static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
144 188
189enum {
190 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196};
197
145/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
146typedef struct coro_cctx { 199typedef struct coro_cctx
200{
147 struct coro_cctx *next; 201 struct coro_cctx *next;
148 202
149 /* the stack */ 203 /* the stack */
150 void *sptr; 204 void *sptr;
151 size_t ssize; 205 size_t ssize;
… …
154 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
155 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 */
156 JMPENV *top_env; 210 JMPENV *top_env;
157 coro_context cctx; 211 coro_context cctx;
158 212
213 U32 gen;
159#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
160 int valgrind_id; 215 int valgrind_id;
161#endif 216#endif
162 char inuse, mapped; 217 unsigned char flags;
163} coro_cctx; 218} coro_cctx;
164 219
165enum { 220enum {
166 CF_RUNNING = 0x0001, /* coroutine is running */ 221 CF_RUNNING = 0x0001, /* coroutine is running */
167 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
168 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
169 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
170}; 225};
171 226
172/* this is a structure representing a perl-level coroutine */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
173struct coro { 228typedef struct
174 /* the c coroutine allocated to this perl coroutine, if any */ 229{
175 coro_cctx *cctx; 230 SV *defsv;
176 231 AV *defav;
177 /* data associated with this coroutine (initial args) */ 232 SV *errsv;
178 AV *args; 233 SV *irsgv;
179 int refcnt;
180 int save; /* CORO_SAVE flags */
181 int flags; /* CF_ flags */
182
183 /* optionally saved, might be zero */
184 AV *defav; /* @_ */
185 SV *defsv; /* $_ */
186 SV *errsv; /* $@ */
187 GV *deffh; /* default filehandle */
188 SV *irssv; /* $/ */
189 SV *irssv_sv; /* real $/ cache */
190
191#define VAR(name,type) type name; 234#define VAR(name,type) type name;
192# include "state.h" 235# include "state.h"
193#undef VAR 236#undef VAR
237} perl_slots;
238
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240
241/* this is a structure representing a perl-level coroutine */
242struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx;
245
246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
251 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256
257 /* statistics */
258 int usecount; /* number of transfers to this coro */
194 259
195 /* coro process data */ 260 /* coro process data */
196 int prio; 261 int prio;
262 SV *throw; /* exception to be thrown */
263
264 /* async_pool */
265 SV *saved_deffh;
197 266
198 /* linked list */ 267 /* linked list */
199 struct coro *next, *prev; 268 struct coro *next, *prev;
200 HV *hv; /* the perl hash associated with this coro, if any */
201}; 269};
202 270
203typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
204typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
205 275
206/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
207 277
208#define PRIO_MAX 3 278#define PRIO_MAX 3
209#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
212#define PRIO_IDLE -3 282#define PRIO_IDLE -3
213#define PRIO_MIN -4 283#define PRIO_MIN -4
214 284
215/* for Coro.pm */ 285/* for Coro.pm */
216static SV *coro_current; 286static SV *coro_current;
287static SV *coro_readyhook;
217static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
218static int coro_nready;
219static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
220 291
221/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
293
294static SV *
295coro_get_sv (pTHX_ const char *name, int create)
296{
297#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create);
300#endif
301 return get_sv (name, create);
302}
303
304static AV *
305coro_get_av (pTHX_ const char *name, int create)
306{
307#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create);
310#endif
311 return get_av (name, create);
312}
313
314static HV *
315coro_get_hv (pTHX_ const char *name, int create)
316{
317#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create);
320#endif
321 return get_hv (name, create);
322}
222 323
223static AV * 324static AV *
224coro_clone_padlist (pTHX_ CV *cv) 325coro_clone_padlist (pTHX_ CV *cv)
225{ 326{
226 AV *padlist = CvPADLIST (cv); 327 AV *padlist = CvPADLIST (cv);
227 AV *newpadlist, *newpad; 328 AV *newpadlist, *newpad;
228 329
229 newpadlist = newAV (); 330 newpadlist = newAV ();
230 AvREAL_off (newpadlist); 331 AvREAL_off (newpadlist);
231#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
232 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
233#else 334#else
234 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
235#endif 336#endif
236 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
237 --AvFILLp (padlist); 338 --AvFILLp (padlist);
238 339
239 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
240 av_store (newpadlist, 1, (SV *)newpad); 341 av_store (newpadlist, 1, (SV *)newpad);
241 342
242 return newpadlist; 343 return newpadlist;
243} 344}
244 345
… …
274 375
275 /* casting is fun. */ 376 /* casting is fun. */
276 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
277 free_padlist (aTHX_ padlist); 378 free_padlist (aTHX_ padlist);
278 379
279 SvREFCNT_dec (av); 380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
280 381
281 return 0; 382 return 0;
282} 383}
283 384
284#define PERL_MAGIC_coro PERL_MAGIC_ext 385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
285 387
286static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 388static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0,
390 coro_cv_free
391};
287 392
288#define CORO_MAGIC(cv) \ 393#define CORO_MAGIC(sv, type) \
289 SvMAGIC (cv) \ 394 expect_true (SvMAGIC (sv)) \
290 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
291 ? SvMAGIC (cv) \ 396 ? SvMAGIC (sv) \
292 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 397 : mg_find (sv, type) \
293 : 0 398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
294 441
295/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
296static void 443static void
297get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
298{ 445{
299 MAGIC *mg = CORO_MAGIC (cv); 446 MAGIC *mg = CORO_MAGIC_cv (cv);
300 AV *av; 447 AV *av;
301 448
302 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
303 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
304 else 451 else
305 { 452 {
306#if CORO_PREFER_PERL_FUNCTIONS 453#if CORO_PREFER_PERL_FUNCTIONS
307 /* this is probably cleaner, but also slower? */ 454 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */
308 CV *cp = Perl_cv_clone (cv); 456 CV *cp = Perl_cv_clone (cv);
309 CvPADLIST (cv) = CvPADLIST (cp); 457 CvPADLIST (cv) = CvPADLIST (cp);
310 CvPADLIST (cp) = 0; 458 CvPADLIST (cp) = 0;
311 SvREFCNT_dec (cp); 459 SvREFCNT_dec (cp);
312#else 460#else
… …
316} 464}
317 465
318static void 466static void
319put_padlist (pTHX_ CV *cv) 467put_padlist (pTHX_ CV *cv)
320{ 468{
321 MAGIC *mg = CORO_MAGIC (cv); 469 MAGIC *mg = CORO_MAGIC_cv (cv);
322 AV *av; 470 AV *av;
323 471
324 if (!mg) 472 if (expect_false (!mg))
325 { 473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
326 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
327 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
328 mg->mg_virtual = &vtbl_coro;
329 mg->mg_obj = (SV *)newAV ();
330 }
331 474
332 av = (AV *)mg->mg_obj; 475 av = (AV *)mg->mg_obj;
333 476
334 if (AvFILLp (av) >= AvMAX (av)) 477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
335 av_extend (av, AvMAX (av) + 1); 478 av_extend (av, AvMAX (av) + 1);
336 479
337 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
338} 481}
339 482
340/** load & save, init *******************************************************/ 483/** load & save, init *******************************************************/
341 484
342#define SB do {
343#define SE } while (0)
344
345#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
346
347static void 485static void
348load_perl (pTHX_ Coro__State c) 486load_perl (pTHX_ Coro__State c)
349{ 487{
488 perl_slots *slot = c->slot;
489 c->slot = 0;
490
491 PL_mainstack = c->mainstack;
492
493 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv;
497
350#define VAR(name,type) PL_ ## name = c->name; 498 #define VAR(name,type) PL_ ## name = slot->name;
351# include "state.h" 499 # include "state.h"
352#undef VAR 500 #undef VAR
353
354 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
355 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
356 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
357 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
358
359 if (c->irssv)
360 {
361 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
362 {
363 SvREFCNT_dec (c->irssv);
364 c->irssv = 0;
365 }
366 else
367 {
368 REPLACE_SV (PL_rs, c->irssv);
369 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
370 sv_setsv (c->irssv_sv, PL_rs);
371 }
372 }
373 501
374 { 502 {
375 dSP; 503 dSP;
504
376 CV *cv; 505 CV *cv;
377 506
378 /* now do the ugly restore mess */ 507 /* now do the ugly restore mess */
379 while ((cv = (CV *)POPs)) 508 while (expect_true (cv = (CV *)POPs))
380 { 509 {
381 put_padlist (aTHX_ cv); /* mark this padlist as available */ 510 put_padlist (aTHX_ cv); /* mark this padlist as available */
382 CvDEPTH (cv) = PTR2IV (POPs); 511 CvDEPTH (cv) = PTR2IV (POPs);
383 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
384 } 513 }
385 514
386 PUTBACK; 515 PUTBACK;
387 } 516 }
517
518 slf_frame = c->slf_frame;
388} 519}
389 520
390static void 521static void
391save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
392{ 523{
524 c->slf_frame = slf_frame;
525
393 { 526 {
394 dSP; 527 dSP;
395 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
396 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
397 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
403 536
404 XPUSHs (Nullsv); 537 XPUSHs (Nullsv);
405 /* this loop was inspired by pp_caller */ 538 /* this loop was inspired by pp_caller */
406 for (;;) 539 for (;;)
407 { 540 {
408 while (cxix >= 0) 541 while (expect_true (cxix >= 0))
409 { 542 {
410 PERL_CONTEXT *cx = &ccstk[cxix--]; 543 PERL_CONTEXT *cx = &ccstk[cxix--];
411 544
412 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
413 { 546 {
414 CV *cv = cx->blk_sub.cv; 547 CV *cv = cx->blk_sub.cv;
415 548
416 if (CvDEPTH (cv)) 549 if (expect_true (CvDEPTH (cv)))
417 { 550 {
418 EXTEND (SP, 3); 551 EXTEND (SP, 3);
419 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
420 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
421 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
422 555
423 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
424 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
425 } 558 }
426 } 559 }
427 } 560 }
428 561
429 if (top_si->si_type == PERLSI_MAIN) 562 if (expect_true (top_si->si_type == PERLSI_MAIN))
430 break; 563 break;
431 564
432 top_si = top_si->si_prev; 565 top_si = top_si->si_prev;
433 ccstk = top_si->si_cxstack; 566 ccstk = top_si->si_cxstack;
434 cxix = top_si->si_cxix; 567 cxix = top_si->si_cxix;
435 } 568 }
436 569
437 PUTBACK; 570 PUTBACK;
438 } 571 }
439 572
440 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 573 /* allocate some space on the context stack for our purposes */
441 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 574 /* we manually unroll here, as usually 2 slots is enough */
442 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 575 if (SLOT_COUNT >= 1) CXINC;
443 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 576 if (SLOT_COUNT >= 2) CXINC;
444 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 577 if (SLOT_COUNT >= 3) CXINC;
578 {
579 int i;
580 for (i = 3; i < SLOT_COUNT; ++i)
581 CXINC;
582 }
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */
445 584
585 c->mainstack = PL_mainstack;
586
587 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589
590 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV;
592 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv);
594
446#define VAR(name,type)c->name = PL_ ## name; 595 #define VAR(name,type) slot->name = PL_ ## name;
447# include "state.h" 596 # include "state.h"
448#undef VAR 597 #undef VAR
598 }
449} 599}
450 600
451/* 601/*
452 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
453 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
454 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
455 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
456 */ 606 */
457#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
458# define coro_init_stacks init_stacks 608# define coro_init_stacks init_stacks
459#else 609#else
460static void 610static void
461coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
462{ 612{
463 PL_curstackinfo = new_stackinfo(64, 6); 613 PL_curstackinfo = new_stackinfo(32, 8);
464 PL_curstackinfo->si_type = PERLSI_MAIN; 614 PL_curstackinfo->si_type = PERLSI_MAIN;
465 PL_curstack = PL_curstackinfo->si_stack; 615 PL_curstack = PL_curstackinfo->si_stack;
466 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
467 617
468 PL_stack_base = AvARRAY(PL_curstack); 618 PL_stack_base = AvARRAY(PL_curstack);
469 PL_stack_sp = PL_stack_base; 619 PL_stack_sp = PL_stack_base;
470 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 620 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
471 621
472 New(50,PL_tmps_stack,64,SV*); 622 New(50,PL_tmps_stack,32,SV*);
473 PL_tmps_floor = -1; 623 PL_tmps_floor = -1;
474 PL_tmps_ix = -1; 624 PL_tmps_ix = -1;
475 PL_tmps_max = 64; 625 PL_tmps_max = 32;
476 626
477 New(54,PL_markstack,16,I32); 627 New(54,PL_markstack,16,I32);
478 PL_markstack_ptr = PL_markstack; 628 PL_markstack_ptr = PL_markstack;
479 PL_markstack_max = PL_markstack + 16; 629 PL_markstack_max = PL_markstack + 16;
480 630
481#ifdef SET_MARK_OFFSET 631#ifdef SET_MARK_OFFSET
482 SET_MARK_OFFSET; 632 SET_MARK_OFFSET;
483#endif 633#endif
484 634
485 New(54,PL_scopestack,16,I32); 635 New(54,PL_scopestack,8,I32);
486 PL_scopestack_ix = 0; 636 PL_scopestack_ix = 0;
487 PL_scopestack_max = 16; 637 PL_scopestack_max = 8;
488 638
489 New(54,PL_savestack,64,ANY); 639 New(54,PL_savestack,24,ANY);
490 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
491 PL_savestack_max = 64; 641 PL_savestack_max = 24;
492 642
493#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
494 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
495 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
496 PL_retstack_max = 4; 646 PL_retstack_max = 4;
497#endif 647#endif
498} 648}
… …
500 650
501/* 651/*
502 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
503 */ 653 */
504static void 654static void
505coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
506{ 656{
507 if (!IN_DESTRUCT)
508 {
509 /* restore all saved variables and stuff */
510 LEAVE_SCOPE (0);
511 assert (PL_tmps_floor == -1);
512
513 /* free all temporaries */
514 FREETMPS;
515 assert (PL_tmps_ix == -1);
516
517 /* unwind all extra stacks */
518 POPSTACK_TO (PL_mainstack);
519
520 /* unwind main stack */
521 dounwind (-1);
522 }
523
524 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
525 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
526 659
527 while (PL_curstackinfo) 660 while (PL_curstackinfo)
528 { 661 {
… …
538 671
539 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
540 Safefree (PL_markstack); 673 Safefree (PL_markstack);
541 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
542 Safefree (PL_savestack); 675 Safefree (PL_savestack);
543#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
544 Safefree (PL_retstack); 677 Safefree (PL_retstack);
545#endif 678#endif
546} 679}
547 680
548static size_t 681static size_t
549coro_rss (struct coro *coro) 682coro_rss (pTHX_ struct coro *coro)
550{ 683{
551 size_t rss = sizeof (coro); 684 size_t rss = sizeof (*coro);
552 685
553 if (coro->mainstack) 686 if (coro->mainstack)
554 { 687 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
555 if (coro->flags & CF_RUNNING) 691 if (coro->flags & CF_RUNNING)
556 { 692 {
693 slot = &tmp_slot;
694
557 #define VAR(name,type)coro->name = PL_ ## name; 695 #define VAR(name,type) slot->name = PL_ ## name;
558 # include "state.h" 696 # include "state.h"
559 #undef VAR 697 #undef VAR
560 } 698 }
699 else
700 slot = coro->slot;
561 701
702 if (slot)
703 {
562 rss += sizeof (coro->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
563 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
564 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
565 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
566 rss += coro->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
567 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
568 rss += coro->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
569 rss += coro->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
570 711
571#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
572 rss += coro->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
573#endif 714#endif
715 }
574 } 716 }
575 717
576 return rss; 718 return rss;
577} 719}
578 720
579/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
580 722
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 */
581static 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 void
582setup_coro (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
583{ 828{
584 /* 829 /*
585 * emulate part of the perl startup here. 830 * emulate part of the perl startup here.
586 */ 831 */
587 coro_init_stacks (aTHX); 832 coro_init_stacks (aTHX);
588 833
834 PL_runops = RUNOPS_DEFAULT;
589 PL_curcop = &PL_compiling; 835 PL_curcop = &PL_compiling;
590 PL_in_eval = EVAL_NULL; 836 PL_in_eval = EVAL_NULL;
591 PL_comppad = 0; 837 PL_comppad = 0;
592 PL_curpm = 0; 838 PL_curpm = 0;
839 PL_curpad = 0;
593 PL_localizing = 0; 840 PL_localizing = 0;
594 PL_dirty = 0; 841 PL_dirty = 0;
595 PL_restartop = 0; 842 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0;
845#endif
846
847 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
850
851 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
855 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
596 857
597 { 858 {
598 dSP; 859 dSP;
599 LOGOP myop; 860 UNOP myop;
600 861
601 SvREFCNT_dec (GvAV (PL_defgv));
602 GvAV (PL_defgv) = coro->args; coro->args = 0;
603
604 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
605 myop.op_next = Nullop; 863 myop.op_next = Nullop;
606 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
607 865
608 PUSHMARK (SP); 866 PUSHMARK (SP);
609 XPUSHs (av_shift (GvAV (PL_defgv))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
610 PUTBACK; 868 PUTBACK;
611 PL_op = (OP *)&myop; 869 PL_op = (OP *)&myop;
612 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
613 SPAGAIN; 871 SPAGAIN;
614 } 872 }
615 873
616 ENTER; /* necessary e.g. for dounwind */ 874 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
617} 879}
618 880
619static void 881static void
882coro_destruct (pTHX_ struct coro *coro)
883{
884 if (!IN_DESTRUCT)
885 {
886 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0);
888 assert (PL_tmps_floor == -1);
889
890 /* free all temporaries */
891 FREETMPS;
892 assert (PL_tmps_ix == -1);
893
894 /* unwind all extra stacks */
895 POPSTACK_TO (PL_mainstack);
896
897 /* unwind main stack */
898 dounwind (-1);
899 }
900
901 SvREFCNT_dec (GvSV (PL_defgv));
902 SvREFCNT_dec (GvAV (PL_defgv));
903 SvREFCNT_dec (GvSV (PL_errgv));
904 SvREFCNT_dec (PL_defoutgv);
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910
911 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw);
913
914 coro_destruct_stacks (aTHX);
915}
916
917INLINE void
620free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
621{ 919{
622 if (coro_mortal) 920 if (expect_true (coro_mortal))
623 { 921 {
624 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
625 coro_mortal = 0; 923 coro_mortal = 0;
626 } 924 }
925}
926
927static int
928runops_trace (pTHX)
929{
930 COP *oldcop = 0;
931 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 {
937 PERL_ASYNC_CHECK ();
938
939 if (cctx->flags & CC_TRACE_ALL)
940 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
942 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top;
945 AV *av = newAV (); /* return values */
946 SV **cb;
947 dSP;
948
949 GV *gv = CvGV (cx->blk_sub.cv);
950 SV *fullname = sv_2mortal (newSV (0));
951 if (isGV (gv))
952 gv_efullname3 (fullname, gv, 0);
953
954 bot = PL_stack_base + cx->blk_oldsp + 1;
955 top = cx->blk_gimme == G_ARRAY ? SP + 1
956 : cx->blk_gimme == G_SCALAR ? bot + 1
957 : bot;
958
959 av_extend (av, top - bot);
960 while (bot < top)
961 av_push (av, SvREFCNT_inc_NN (*bot++));
962
963 PL_runops = RUNOPS_DEFAULT;
964 ENTER;
965 SAVETMPS;
966 EXTEND (SP, 3);
967 PUSHMARK (SP);
968 PUSHs (&PL_sv_no);
969 PUSHs (fullname);
970 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
971 PUTBACK;
972 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
973 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
974 SPAGAIN;
975 FREETMPS;
976 LEAVE;
977 PL_runops = runops_trace;
978 }
979
980 if (oldcop != PL_curcop)
981 {
982 oldcop = PL_curcop;
983
984 if (PL_curcop != &PL_compiling)
985 {
986 SV **cb;
987
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
989 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 {
994 runops_proc_t old_runops = PL_runops;
995 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0));
998
999 if (isGV (gv))
1000 gv_efullname3 (fullname, gv, 0);
1001
1002 PL_runops = RUNOPS_DEFAULT;
1003 ENTER;
1004 SAVETMPS;
1005 EXTEND (SP, 3);
1006 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN;
1014 FREETMPS;
1015 LEAVE;
1016 PL_runops = runops_trace;
1017 }
1018
1019 oldcxix = cxstack_ix;
1020 }
1021
1022 if (cctx->flags & CC_TRACE_LINE)
1023 {
1024 dSP;
1025
1026 PL_runops = RUNOPS_DEFAULT;
1027 ENTER;
1028 SAVETMPS;
1029 EXTEND (SP, 3);
1030 PL_runops = RUNOPS_DEFAULT;
1031 PUSHMARK (SP);
1032 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1033 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1034 PUTBACK;
1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1037 SPAGAIN;
1038 FREETMPS;
1039 LEAVE;
1040 PL_runops = runops_trace;
1041 }
1042 }
1043 }
1044 }
1045 }
1046
1047 TAINT_NOT;
1048 return 0;
1049}
1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
627} 1056}
628 1057
629/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
630/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
631/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
632static void NOINLINE 1062static void NOINLINE
633prepare_cctx (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
634{ 1064{
635 dSP; 1065 dSP;
636 LOGOP myop; 1066 UNOP myop;
637 1067
1068 PL_top_env = &PL_start_env;
1069
1070 if (cctx->flags & CC_TRACE)
1071 PL_runops = runops_trace;
1072
638 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
639 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
640 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
641 1076
642 PUSHMARK (SP); 1077 PUSHMARK (SP);
643 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
644 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
645 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
646 PUTBACK; 1081 PUTBACK;
647 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
648 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649 SPAGAIN; 1084 SPAGAIN;
650} 1085}
651 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
652/* 1094/*
653 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
654 */ 1096 */
655static void 1097static void
656coro_run (void *arg) 1098cctx_run (void *arg)
657{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
658 dTHX; 1106 dTHX;
659 1107
660 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
661 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */
662 1111
663 PL_top_env = &PL_start_env;
664
665 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
666 prepare_cctx (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
667 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
668 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
669 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
670 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
671 1121
672 /* 1122 /*
673 * If perl-run returns we assume exit() was being called or the coro 1123 * If perl-run returns we assume exit() was being called or the coro
674 * fell off the end, which seems to be the only valid (non-bug) 1124 * fell off the end, which seems to be the only valid (non-bug)
675 * reason for perl_run to return. We try to exit by jumping to the 1125 * reason for perl_run to return. We try to exit by jumping to the
676 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
677 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
678 */ 1128 */
679 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
680 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
681} 1132}
682 1133
683static coro_cctx * 1134static coro_cctx *
684cctx_new () 1135cctx_new ()
685{ 1136{
686 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
687 void *stack_start; 1166 void *stack_start;
688 size_t stack_size; 1167 size_t stack_size;
689 1168
690 ++cctx_count;
691
692 Newz (0, cctx, 1, coro_cctx);
693
694#if HAVE_MMAP 1169#if HAVE_MMAP
695
696 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
697 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
698 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
699 1173
700 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
701 { 1175 {
702# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
703 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
704# endif 1178 #endif
705 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
706 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
707 cctx->mapped = 1; 1181 cctx->flags |= CC_MAPPED;
708 } 1182 }
709 else 1183 else
710#endif 1184#endif
711 { 1185 {
712 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
713 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
714 1188
715 if (!cctx->sptr) 1189 if (!cctx->sptr)
716 { 1190 {
717 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
718 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
719 } 1193 }
720 1194
721 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
722 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
723 } 1197 }
724 1198
725 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
726 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
727 1204
728 return cctx; 1205 return cctx;
729} 1206}
730 1207
731static void 1208static void
… …
733{ 1210{
734 if (!cctx) 1211 if (!cctx)
735 return; 1212 return;
736 1213
737 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
738 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
739#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
740 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
741#endif 1222 #endif
742 1223
743#if HAVE_MMAP 1224#if HAVE_MMAP
744 if (cctx->mapped) 1225 if (cctx->flags & CC_MAPPED)
745 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
746 else 1227 else
747#endif 1228#endif
748 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
749 1231
750 Safefree (cctx); 1232 Safefree (cctx);
751} 1233}
1234
1235/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
752 1237
753static coro_cctx * 1238static coro_cctx *
754cctx_get (pTHX) 1239cctx_get (pTHX)
755{ 1240{
756 while (cctx_first) 1241 while (expect_true (cctx_first))
757 { 1242 {
758 coro_cctx *cctx = cctx_first; 1243 coro_cctx *cctx = cctx_first;
759 cctx_first = cctx->next; 1244 cctx_first = cctx->next;
760 --cctx_idle; 1245 --cctx_idle;
761 1246
762 if (cctx->ssize >= coro_stacksize) 1247 if (expect_true (!CCTX_EXPIRED (cctx)))
763 return cctx; 1248 return cctx;
764 1249
765 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
766 } 1251 }
767 1252
768 PL_op = PL_op->op_next;
769 return cctx_new (); 1253 return cctx_new_run ();
770} 1254}
771 1255
772static void 1256static void
773cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
774{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
775 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
776 if (cctx_idle >= MAX_IDLE_CCTX) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
777 { 1263 {
778 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
779 cctx_first = first->next; 1265 cctx_first = first->next;
780 --cctx_idle; 1266 --cctx_idle;
781 1267
782 assert (!first->inuse);
783 cctx_destroy (first); 1268 cctx_destroy (first);
784 } 1269 }
785 1270
786 ++cctx_idle; 1271 ++cctx_idle;
787 cctx->next = cctx_first; 1272 cctx->next = cctx_first;
788 cctx_first = cctx; 1273 cctx_first = cctx;
789} 1274}
790 1275
791/** coroutine switching *****************************************************/ 1276/** coroutine switching *****************************************************/
792 1277
793/* never call directly, always through the coro_state_transfer global variable */ 1278static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{
1281 if (expect_true (prev != next))
1282 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285
1286 if (expect_false (next->flags & CF_RUNNING))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1291
1292#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif
1296 }
1297}
1298
1299/* always use the TRANSFER macro */
794static void NOINLINE 1300static void NOINLINE
795transfer (pTHX_ struct coro *prev, struct coro *next) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
796{ 1302{
797 dSTACKLEVEL; 1303 dSTACKLEVEL;
798 1304
799 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
800 if (!next) 1306 if (expect_false (!next))
801 { 1307 {
802 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
803 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
804 } 1310 }
805 else if (prev != next) 1311 else if (expect_true (prev != next))
806 { 1312 {
807 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
808 1314
809 if (prev->flags & CF_NEW) 1315 if (expect_false (prev->flags & CF_NEW))
810 { 1316 {
811 /* create a new empty context */ 1317 /* create a new empty/source context */
812 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
813 prev->cctx->inuse = 1;
814 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
815 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
816 } 1321 }
817 1322
818 /*TODO: must not croak here */
819 if (!prev->flags & CF_RUNNING)
820 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
821
822 if (next->flags & CF_RUNNING)
823 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
824
825 if (next->flags & CF_DESTROYED)
826 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
827
828 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
829 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
830 1325
831 LOCK; 1326 /* first get rid of the old state */
1327 save_perl (aTHX_ prev);
832 1328
833 if (next->flags & CF_NEW) 1329 if (expect_false (next->flags & CF_NEW))
834 { 1330 {
835 /* need to start coroutine */ 1331 /* need to start coroutine */
836 next->flags &= ~CF_NEW; 1332 next->flags &= ~CF_NEW;
837 /* first get rid of the old state */
838 save_perl (aTHX_ prev);
839 /* setup coroutine call */ 1333 /* setup coroutine call */
840 setup_coro (aTHX_ next); 1334 coro_setup (aTHX_ next);
841 /* need a new stack */
842 assert (!next->cctx);
843 } 1335 }
844 else 1336 else
1337 load_perl (aTHX_ next);
1338
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */
1342 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel
1344 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx
1346 ))
845 { 1347 {
846 /* coroutine already started */ 1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
847 save_perl (aTHX_ prev); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
848 load_perl (aTHX_ next); 1350
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1356 if (!next->cctx)
1357 next->cctx = cctx_get (aTHX);
1358
1359 cctx_put (prev__cctx);
849 } 1360 }
850 1361
851 prev__cctx = prev->cctx; 1362 ++next->usecount;
852 1363
853 /* possibly "free" the cctx */
854 if (prev__cctx->idle_sp == STACKLEVEL)
855 {
856 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
857 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
858
859 prev->cctx = 0;
860
861 cctx_put (prev__cctx);
862 prev__cctx->inuse = 0;
863 }
864
865 if (!next->cctx) 1364 if (expect_true (!next->cctx))
866 {
867 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
868 assert (!next->cctx->inuse);
869 next->cctx->inuse = 1;
870 }
871 1366
872 if (prev__cctx != next->cctx) 1367 if (expect_false (prev__cctx != next->cctx))
873 { 1368 {
874 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
875 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
876 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
877 } 1372 }
878 1373
879 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
880 UNLOCK;
881 } 1375 }
882} 1376}
883 1377
884struct transfer_args 1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
885{
886 struct coro *prev, *next;
887};
888
889#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
890 1380
891/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
892 1382
893static int 1383static int
894coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
895{ 1385{
896 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
897 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
898 1391
899 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
900 1393
901 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
902 { 1395 {
903 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
904 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
905 LOCK;
906 --coro_nready; 1398 --coro_nready;
907 UNLOCK;
908 } 1399 }
909 else 1400 else
910 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
911 1402
912 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
913 { 1404 {
914 struct coro temp; 1405 struct coro temp;
915 1406
916 assert (!(coro->flags & CF_RUNNING)); 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
917
918 Zero (&temp, 1, struct coro);
919 temp.save = CORO_SAVE_ALL;
920
921 if (coro->flags & CF_RUNNING)
922 croak ("FATAL: tried to destroy currently running coroutine");
923 1408
924 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
925 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
926 1411
927 coro_destroy_stacks (aTHX); 1412 coro_destruct (aTHX_ coro);
928 1413
929 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1414 load_perl (aTHX_ &temp);
930 1415
931 coro->mainstack = 0; 1416 coro->slot = 0;
932 } 1417 }
933 1418
934 cctx_destroy (coro->cctx); 1419 cctx_destroy (coro->cctx);
935 SvREFCNT_dec (coro->args); 1420 SvREFCNT_dec (coro->args);
936 1421
… …
977#else 1462#else
978# define MGf_DUP 0 1463# define MGf_DUP 0
979#endif 1464#endif
980}; 1465};
981 1466
982static struct coro *
983SvSTATE_ (pTHX_ SV *coro)
984{
985 HV *stash;
986 MAGIC *mg;
987
988 if (SvROK (coro))
989 coro = SvRV (coro);
990
991 stash = SvSTASH (coro);
992 if (stash != coro_stash && stash != coro_state_stash)
993 {
994 /* very slow, but rare, check */
995 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
996 croak ("Coro::State object required");
997 }
998
999 mg = CORO_MAGIC (coro);
1000 return (struct coro *)mg->mg_ptr;
1001}
1002
1003#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1004
1005static void 1467static void
1006prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1007{ 1469{
1008 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1009 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1472 TRANSFER_CHECK (*ta);
1010} 1473}
1011 1474
1012static void 1475static void
1013api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1014{ 1477{
1015 dTHX;
1016 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1017 1479
1018 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1019 TRANSFER (ta); 1481 TRANSFER (ta, 1);
1020}
1021
1022static int
1023api_save (SV *coro_sv, int new_save)
1024{
1025 dTHX;
1026 struct coro *coro = SvSTATE (coro_sv);
1027 int old_save = coro->save;
1028
1029 if (new_save >= 0)
1030 coro->save = new_save;
1031
1032 return old_save;
1033} 1482}
1034 1483
1035/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1036 1485
1037static void 1486INLINE void
1038coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1039{ 1488{
1040 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1041} 1490}
1042 1491
1043static SV * 1492INLINE SV *
1044coro_deq (pTHX_ int min_prio) 1493coro_deq (pTHX)
1045{ 1494{
1046 int prio = PRIO_MAX - PRIO_MIN; 1495 int prio;
1047 1496
1048 min_prio -= PRIO_MIN;
1049 if (min_prio < 0)
1050 min_prio = 0;
1051
1052 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1053 if (AvFILLp (coro_ready [prio]) >= 0) 1498 if (AvFILLp (coro_ready [prio]) >= 0)
1054 return av_shift (coro_ready [prio]); 1499 return av_shift (coro_ready [prio]);
1055 1500
1056 return 0; 1501 return 0;
1057} 1502}
1058 1503
1059static int 1504static int
1060api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1061{ 1506{
1062 dTHX;
1063 struct coro *coro; 1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1064 1510
1065 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
1066 coro_sv = SvRV (coro_sv); 1512 coro_sv = SvRV (coro_sv);
1067 1513
1068 coro = SvSTATE (coro_sv); 1514 coro = SvSTATE (coro_sv);
… …
1070 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1071 return 0; 1517 return 0;
1072 1518
1073 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1074 1520
1075 LOCK; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1076 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro);
1077 ++coro_nready; 1525 ++coro_nready;
1078 UNLOCK; 1526
1527 if (sv_hook)
1528 {
1529 dSP;
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1079 1545
1080 return 1; 1546 return 1;
1081} 1547}
1082 1548
1083static int 1549static int
1084api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1085{ 1551{
1086 dTHX;
1087 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1088} 1553}
1089 1554
1090static void 1555INLINE void
1091prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1092{ 1557{
1093 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1094 1559
1095 for (;;) 1560 for (;;)
1096 { 1561 {
1097 LOCK;
1098 next_sv = coro_deq (aTHX_ PRIO_MIN); 1562 next_sv = coro_deq (aTHX);
1099 1563
1100 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1101 if (!next_sv) 1565 if (expect_false (!next_sv))
1102 { 1566 {
1103 dSP; 1567 dSP;
1104 UNLOCK;
1105 1568
1106 ENTER; 1569 ENTER;
1107 SAVETMPS; 1570 SAVETMPS;
1108 1571
1109 PUSHMARK (SP); 1572 PUSHMARK (SP);
1110 PUTBACK; 1573 PUTBACK;
1111 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1112 1576
1113 FREETMPS; 1577 FREETMPS;
1114 LEAVE; 1578 LEAVE;
1115 continue; 1579 continue;
1116 } 1580 }
1117 1581
1118 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1119 1583
1120 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1121 if (ta->next->flags & CF_DESTROYED) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1122 { 1586 {
1123 UNLOCK;
1124 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1125 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1126 continue; 1589 continue;
1127 } 1590 }
1128 1591
1129 --coro_nready; 1592 --coro_nready;
1130 UNLOCK;
1131 break; 1593 break;
1132 } 1594 }
1133 1595
1134 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1135 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1598 ta->prev = SvSTATE_hv (prev_sv);
1599 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1601 ta->next->flags &= ~CF_READY;
1136 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1137 ta->prev = SvSTATE (prev_sv);
1138 1603
1139 assert (ta->next->flags & CF_READY);
1140 ta->next->flags &= ~CF_READY;
1141
1142 LOCK;
1143 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1144 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1145 UNLOCK;
1146} 1606}
1147 1607
1148static void 1608INLINE void
1149prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1150{ 1610{
1151 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1152 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1153} 1613}
1154 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1155static int 1638static int
1156prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1157{ 1640{
1158 if (coro_nready) 1641 struct coro_transfer_args ta;
1159 { 1642
1160 SV *prev = SvRV (coro_current);
1161 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1162 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1163 return 1; 1648 return 1;
1164 } 1649 }
1165 else 1650 else
1166 return 0; 1651 return 0;
1167} 1652}
1168 1653
1169static void
1170api_schedule (void)
1171{
1172 dTHX;
1173 struct transfer_args ta;
1174
1175 prepare_schedule (aTHX_ &ta);
1176 TRANSFER (ta);
1177}
1178
1179static int 1654static int
1180api_cede (void) 1655api_cede_notself (pTHX)
1181{ 1656{
1182 dTHX; 1657 if (coro_nready)
1658 {
1183 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1184 1660
1185 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1186
1187 if (ta.prev != ta.next)
1188 {
1189 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1190 return 1; 1663 return 1;
1191 } 1664 }
1192 else 1665 else
1193 return 0; 1666 return 0;
1194} 1667}
1195 1668
1669static void
1670api_trace (pTHX_ SV *coro_sv, int flags)
1671{
1672 struct coro *coro = SvSTATE (coro_sv);
1673
1674 if (flags & CC_TRACE)
1675 {
1676 if (!coro->cctx)
1677 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,");
1680
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 {
1685 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1686
1687 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT;
1689 else
1690 coro->slot->runops = RUNOPS_DEFAULT;
1691 }
1692}
1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede (aTHX);
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769/*****************************************************************************/
1770
1771static const CV *slf_cv; /* for quick consistency check */
1772
1773static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774static SV *slf_arg0;
1775static SV *slf_arg1;
1776static SV *slf_arg2;
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 dSP;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 PUTBACK;
1903
1904 /* now call the init function, which needs to set up slf_frame */
1905 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908 /* pop args */
1909 SP = PL_stack_base + POPMARK;
1910
1911 PUTBACK;
1912 }
1913
1914 /* now that we have a slf_frame, interpret it! */
1915 /* we use a callback system not to make the code needlessly */
1916 /* complicated, but so we can run multiple perl coros from one cctx */
1917
1918 do
1919 {
1920 struct coro_transfer_args ta;
1921
1922 slf_frame.prepare (aTHX_ &ta);
1923 TRANSFER (ta, 0);
1924
1925 checkmark = PL_stack_sp - PL_stack_base;
1926 }
1927 while (slf_frame.check (aTHX_ &slf_frame));
1928
1929 {
1930 dSP;
1931 SV **bot = PL_stack_base + checkmark;
1932 int gimme = GIMME_V;
1933
1934 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936 /* make sure we put something on the stack in scalar context */
1937 if (gimme == G_SCALAR)
1938 {
1939 if (sp == bot)
1940 XPUSHs (&PL_sv_undef);
1941
1942 SP = bot + 1;
1943 }
1944
1945 PUTBACK;
1946 }
1947
1948 {
1949 struct coro *coro = SvSTATE_current;
1950
1951 if (expect_false (coro->throw))
1952 {
1953 SV *exception = sv_2mortal (coro->throw);
1954
1955 coro->throw = 0;
1956 sv_setsv (ERRSV, exception);
1957 croak (0);
1958 }
1959 }
1960
1961 return NORMAL;
1962}
1963
1964static void
1965api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1966{
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 if (items > 3)
1974 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976 CvFLAGS (cv) |= CVf_SLF;
1977 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978 slf_cv = cv;
1979
1980 /* we patch the op, and then re-run the whole call */
1981 /* we have to put the same argument on the stack for this to work */
1982 /* and this will be done by pp_restore */
1983 slf_restore.op_next = (OP *)&slf_restore;
1984 slf_restore.op_type = OP_CUSTOM;
1985 slf_restore.op_ppaddr = pp_restore;
1986 slf_restore.op_first = PL_op;
1987
1988 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992 PL_op->op_ppaddr = pp_slf;
1993
1994 PL_op = (OP *)&slf_restore;
1995}
1996
1997/*****************************************************************************/
1998
1999static void
2000coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001{
2002 SV *count_sv = AvARRAY (av)[0];
2003 IV count = SvIVX (count_sv);
2004
2005 count += adjust;
2006 SvIVX (count_sv) = count;
2007
2008 /* now wake up as many waiters as are expected to lock */
2009 while (count > 0 && AvFILLp (av) > 0)
2010 {
2011 SV *cb;
2012
2013 /* swap first two elements so we can shift a waiter */
2014 AvARRAY (av)[0] = AvARRAY (av)[1];
2015 AvARRAY (av)[1] = count_sv;
2016 cb = av_shift (av);
2017
2018 if (SvOBJECT (cb))
2019 api_ready (aTHX_ cb);
2020 else
2021 croak ("callbacks not yet supported");
2022
2023 SvREFCNT_dec (cb);
2024
2025 --count;
2026 }
2027}
2028
2029static void
2030coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2031{
2032 /* call $sem->adjust (0) to possibly wake up some other waiters */
2033 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2034}
2035
1196static int 2036static int
1197api_cede_notself (void) 2037slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1198{ 2038{
1199 dTHX; 2039 AV *av = (AV *)frame->data;
1200 struct transfer_args ta; 2040 SV *count_sv = AvARRAY (av)[0];
1201 2041
1202 if (prepare_cede_notself (aTHX_ &ta)) 2042 if (SvIVX (count_sv) > 0)
2043 {
2044 SvSTATE_current->on_destroy = 0;
2045 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2046 return 0;
1203 { 2047 }
1204 TRANSFER (ta); 2048 else
2049 {
2050 int i;
2051 /* if we were woken up but can't down, we look through the whole */
2052 /* waiters list and only add us if we aren't in there already */
2053 /* this avoids some degenerate memory usage cases */
2054
2055 for (i = 1; i <= AvFILLp (av); ++i)
2056 if (AvARRAY (av)[i] == SvRV (coro_current))
2057 return 1;
2058
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1205 return 1; 2060 return 1;
1206 } 2061 }
2062}
2063
2064static void
2065slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 AV *av = (AV *)SvRV (arg [0]);
2068
2069 if (SvIVX (AvARRAY (av)[0]) > 0)
2070 {
2071 frame->data = (void *)av;
2072 frame->prepare = prepare_nop;
2073 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074 }
1207 else 2075 else
1208 return 0; 2076 {
1209} 2077 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1210 2078
2079 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080 frame->prepare = prepare_schedule;
2081
2082 /* to avoid race conditions when a woken-up coro gets terminated */
2083 /* we arrange for a temporary on_destroy that calls adjust (0) */
2084 assert (!SvSTATE_current->on_destroy);//D
2085 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086 }
2087
2088 frame->check = slf_check_semaphore_down;
2089
2090}
2091
2092/*****************************************************************************/
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{
2102 CV *cv = (CV *)NEWSV (0, 0);
2103
2104 sv_upgrade ((SV *)cv, SVt_PVCV);
2105
2106 CvANON_on (cv);
2107 CvISXSUB_on (cv);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110
2111 return newRV_noinc ((SV *)cv);
2112}
2113
2114/*****************************************************************************/
2115
1211MODULE = Coro::State PACKAGE = Coro::State 2116MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1212 2117
1213PROTOTYPES: DISABLE 2118PROTOTYPES: DISABLE
1214 2119
1215BOOT: 2120BOOT:
1216{ 2121{
1217#ifdef USE_ITHREADS 2122#ifdef USE_ITHREADS
1218 MUTEX_INIT (&coro_mutex); 2123# if CORO_PTHREAD
2124 coro_thx = PERL_GET_CONTEXT;
2125# endif
1219#endif 2126#endif
1220 BOOT_PAGESIZE; 2127 BOOT_PAGESIZE;
1221 2128
2129 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2130 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2131
2132 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2133 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2134 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2135
2136 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2137 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2138 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2139
1222 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2140 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1223 2141
1224 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2142 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1225 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 2143 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1226 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1227 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1228 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1229 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 2144 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1230 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2145 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1231 2146
1232 main_mainstack = PL_mainstack; 2147 main_mainstack = PL_mainstack;
1233 main_top_env = PL_top_env; 2148 main_top_env = PL_top_env;
1234 2149
1235 while (main_top_env->je_prev) 2150 while (main_top_env->je_prev)
1236 main_top_env = main_top_env->je_prev; 2151 main_top_env = main_top_env->je_prev;
1237 2152
2153 {
2154 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155
2156 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157 hv_store_ent (PL_custom_op_names, slf,
2158 newSVpv ("coro_slf", 0), 0);
2159
2160 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161 hv_store_ent (PL_custom_op_descs, slf,
2162 newSVpv ("coro schedule like function", 0), 0);
2163 }
2164
1238 coroapi.ver = CORO_API_VERSION; 2165 coroapi.ver = CORO_API_VERSION;
2166 coroapi.rev = CORO_API_REVISION;
2167
1239 coroapi.transfer = api_transfer; 2168 coroapi.transfer = api_transfer;
2169
2170 coroapi.sv_state = SvSTATE_;
2171 coroapi.execute_slf = api_execute_slf;
2172 coroapi.prepare_nop = prepare_nop;
2173 coroapi.prepare_schedule = prepare_schedule;
2174 coroapi.prepare_cede = prepare_cede;
2175 coroapi.prepare_cede_notself = prepare_cede_notself;
2176
2177 {
2178 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2179
2180 if (!svp) croak ("Time::HiRes is required");
2181 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2182
2183 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2184 }
1240 2185
1241 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2186 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1242} 2187}
1243 2188
1244SV * 2189SV *
1245new (char *klass, ...) 2190new (char *klass, ...)
1246 CODE: 2191 CODE:
1247{ 2192{
1248 struct coro *coro; 2193 struct coro *coro;
2194 MAGIC *mg;
1249 HV *hv; 2195 HV *hv;
1250 int i; 2196 int i;
1251 2197
1252 Newz (0, coro, 1, struct coro); 2198 Newz (0, coro, 1, struct coro);
1253 coro->args = newAV (); 2199 coro->args = newAV ();
1254 coro->save = CORO_SAVE_DEF;
1255 coro->flags = CF_NEW; 2200 coro->flags = CF_NEW;
1256 2201
1257 if (coro_first) coro_first->prev = coro; 2202 if (coro_first) coro_first->prev = coro;
1258 coro->next = coro_first; 2203 coro->next = coro_first;
1259 coro_first = coro; 2204 coro_first = coro;
1260 2205
1261 coro->hv = hv = newHV (); 2206 coro->hv = hv = newHV ();
1262 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2207 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208 mg->mg_flags |= MGf_DUP;
1263 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2209 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1264 2210
2211 av_extend (coro->args, items - 1);
1265 for (i = 1; i < items; i++) 2212 for (i = 1; i < items; i++)
1266 av_push (coro->args, newSVsv (ST (i))); 2213 av_push (coro->args, newSVsv (ST (i)));
1267} 2214}
1268 OUTPUT: 2215 OUTPUT:
1269 RETVAL 2216 RETVAL
1270 2217
1271int
1272save (SV *coro, int new_save = -1)
1273 CODE:
1274 RETVAL = api_save (coro, new_save);
1275 OUTPUT:
1276 RETVAL
1277
1278int
1279save_also (SV *coro_sv, int save_also)
1280 CODE:
1281{
1282 struct coro *coro = SvSTATE (coro_sv);
1283 RETVAL = coro->save;
1284 coro->save |= save_also;
1285}
1286 OUTPUT:
1287 RETVAL
1288
1289void 2218void
1290_set_stacklevel (...) 2219_set_stacklevel (...)
1291 ALIAS: 2220 CODE:
1292 Coro::State::transfer = 1 2221 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1293 Coro::schedule = 2
1294 Coro::cede = 3
1295 Coro::cede_notself = 4
1296 CODE:
1297{
1298 struct transfer_args ta;
1299 2222
1300 switch (ix) 2223void
1301 { 2224transfer (...)
1302 case 0: 2225 PROTOTYPE: $$
1303 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2226 CODE:
1304 ta.next = 0; 2227 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1305 break;
1306
1307 case 1:
1308 if (items != 2)
1309 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1310
1311 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1312 break;
1313
1314 case 2:
1315 prepare_schedule (aTHX_ &ta);
1316 break;
1317
1318 case 3:
1319 prepare_cede (aTHX_ &ta);
1320 break;
1321
1322 case 4:
1323 if (!prepare_cede_notself (aTHX_ &ta))
1324 XSRETURN_EMPTY;
1325
1326 break;
1327 }
1328
1329 BARRIER;
1330 TRANSFER (ta);
1331
1332 if (GIMME_V != G_VOID && ta.next != ta.prev)
1333 XSRETURN_YES;
1334}
1335 2228
1336bool 2229bool
1337_destroy (SV *coro_sv) 2230_destroy (SV *coro_sv)
1338 CODE: 2231 CODE:
1339 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2232 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1340 OUTPUT: 2233 OUTPUT:
1341 RETVAL 2234 RETVAL
1342 2235
1343void 2236void
1344_exit (code) 2237_exit (int code)
1345 int code
1346 PROTOTYPE: $ 2238 PROTOTYPE: $
1347 CODE: 2239 CODE:
1348 _exit (code); 2240 _exit (code);
1349 2241
1350int 2242int
1351cctx_stacksize (int new_stacksize = 0) 2243cctx_stacksize (int new_stacksize = 0)
2244 PROTOTYPE: ;$
1352 CODE: 2245 CODE:
1353 RETVAL = coro_stacksize; 2246 RETVAL = cctx_stacksize;
1354 if (new_stacksize) 2247 if (new_stacksize)
2248 {
1355 coro_stacksize = new_stacksize; 2249 cctx_stacksize = new_stacksize;
2250 ++cctx_gen;
2251 }
1356 OUTPUT: 2252 OUTPUT:
1357 RETVAL 2253 RETVAL
1358 2254
1359int 2255int
2256cctx_max_idle (int max_idle = 0)
2257 PROTOTYPE: ;$
2258 CODE:
2259 RETVAL = cctx_max_idle;
2260 if (max_idle > 1)
2261 cctx_max_idle = max_idle;
2262 OUTPUT:
2263 RETVAL
2264
2265int
1360cctx_count () 2266cctx_count ()
2267 PROTOTYPE:
1361 CODE: 2268 CODE:
1362 RETVAL = cctx_count; 2269 RETVAL = cctx_count;
1363 OUTPUT: 2270 OUTPUT:
1364 RETVAL 2271 RETVAL
1365 2272
1366int 2273int
1367cctx_idle () 2274cctx_idle ()
2275 PROTOTYPE:
1368 CODE: 2276 CODE:
1369 RETVAL = cctx_idle; 2277 RETVAL = cctx_idle;
1370 OUTPUT: 2278 OUTPUT:
1371 RETVAL 2279 RETVAL
1372 2280
1373void 2281void
1374list () 2282list ()
2283 PROTOTYPE:
1375 PPCODE: 2284 PPCODE:
1376{ 2285{
1377 struct coro *coro; 2286 struct coro *coro;
1378 for (coro = coro_first; coro; coro = coro->next) 2287 for (coro = coro_first; coro; coro = coro->next)
1379 if (coro->hv) 2288 if (coro->hv)
1380 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 2289 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1381} 2290}
1382 2291
1383void 2292void
1384_eval (Coro::State coro, SV *coderef) 2293call (Coro::State coro, SV *coderef)
2294 ALIAS:
2295 eval = 1
1385 CODE: 2296 CODE:
1386{ 2297{
1387 if (coro->mainstack) 2298 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1388 { 2299 {
1389 struct coro temp; 2300 struct coro temp;
1390 Zero (&temp, 1, struct coro);
1391 temp.save = CORO_SAVE_ALL;
1392 2301
1393 if (!(coro->flags & CF_RUNNING)) 2302 if (!(coro->flags & CF_RUNNING))
1394 { 2303 {
2304 PUTBACK;
1395 save_perl (aTHX_ &temp); 2305 save_perl (aTHX_ &temp);
1396 load_perl (aTHX_ coro); 2306 load_perl (aTHX_ coro);
1397 } 2307 }
1398 2308
1399 { 2309 {
1400 dSP; 2310 dSP;
1401 ENTER; 2311 ENTER;
1402 SAVETMPS; 2312 SAVETMPS;
2313 PUTBACK;
2314 PUSHSTACK;
1403 PUSHMARK (SP); 2315 PUSHMARK (SP);
1404 PUTBACK; 2316
2317 if (ix)
2318 eval_sv (coderef, 0);
2319 else
1405 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2320 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2321
2322 POPSTACK;
1406 SPAGAIN; 2323 SPAGAIN;
1407 FREETMPS; 2324 FREETMPS;
1408 LEAVE; 2325 LEAVE;
1409 PUTBACK; 2326 PUTBACK;
1410 } 2327 }
1411 2328
1412 if (!(coro->flags & CF_RUNNING)) 2329 if (!(coro->flags & CF_RUNNING))
1413 { 2330 {
1414 save_perl (aTHX_ coro); 2331 save_perl (aTHX_ coro);
1415 load_perl (aTHX_ &temp); 2332 load_perl (aTHX_ &temp);
2333 SPAGAIN;
1416 } 2334 }
1417 } 2335 }
1418} 2336}
1419 2337
1420SV * 2338SV *
1421is_ready (Coro::State coro) 2339is_ready (Coro::State coro)
1422 PROTOTYPE: $ 2340 PROTOTYPE: $
1423 ALIAS: 2341 ALIAS:
1424 is_ready = CF_READY 2342 is_ready = CF_READY
… …
1428 CODE: 2346 CODE:
1429 RETVAL = boolSV (coro->flags & ix); 2347 RETVAL = boolSV (coro->flags & ix);
1430 OUTPUT: 2348 OUTPUT:
1431 RETVAL 2349 RETVAL
1432 2350
1433IV 2351void
2352throw (Coro::State self, SV *throw = &PL_sv_undef)
2353 PROTOTYPE: $;$
2354 CODE:
2355 SvREFCNT_dec (self->throw);
2356 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2357
2358void
2359api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360 PROTOTYPE: $;$
2361 C_ARGS: aTHX_ coro, flags
2362
2363SV *
2364has_cctx (Coro::State coro)
2365 PROTOTYPE: $
2366 CODE:
2367 RETVAL = boolSV (!!coro->cctx);
2368 OUTPUT:
2369 RETVAL
2370
2371int
2372is_traced (Coro::State coro)
2373 PROTOTYPE: $
2374 CODE:
2375 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2376 OUTPUT:
2377 RETVAL
2378
2379UV
1434rss (Coro::State coro) 2380rss (Coro::State coro)
1435 PROTOTYPE: $ 2381 PROTOTYPE: $
2382 ALIAS:
2383 usecount = 1
1436 CODE: 2384 CODE:
1437 RETVAL = coro_rss (coro); 2385 switch (ix)
2386 {
2387 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2388 case 1: RETVAL = coro->usecount; break;
2389 }
1438 OUTPUT: 2390 OUTPUT:
1439 RETVAL 2391 RETVAL
1440 2392
2393void
2394force_cctx ()
2395 PROTOTYPE:
2396 CODE:
2397 SvSTATE_current->cctx->idle_sp = 0;
2398
2399void
2400swap_defsv (Coro::State self)
2401 PROTOTYPE: $
2402 ALIAS:
2403 swap_defav = 1
2404 CODE:
2405 if (!self->slot)
2406 croak ("cannot swap state with coroutine that has no saved state,");
2407 else
2408 {
2409 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2410 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411
2412 SV *tmp = *src; *src = *dst; *dst = tmp;
2413 }
1441 2414
1442MODULE = Coro::State PACKAGE = Coro 2415MODULE = Coro::State PACKAGE = Coro
1443 2416
1444BOOT: 2417BOOT:
1445{ 2418{
1446 int i; 2419 int i;
1447 2420
1448 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1449 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1450 av_async_pool = get_av ("Coro::async_pool", TRUE); 2421 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1451 2424
1452 coro_current = get_sv ("Coro::current", FALSE); 2425 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1453 SvREADONLY_on (coro_current); 2426 SvREADONLY_on (coro_current);
1454 2427
1455 coro_stash = gv_stashpv ("Coro", TRUE); 2428 coro_stash = gv_stashpv ("Coro", TRUE);
1456 2429
1457 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1458 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1459 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1460 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1463 2436
1464 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2437 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1465 coro_ready[i] = newAV (); 2438 coro_ready[i] = newAV ();
1466 2439
1467 { 2440 {
1468 SV *sv = perl_get_sv("Coro::API", 1); 2441 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1469 2442
1470 coroapi.schedule = api_schedule; 2443 coroapi.schedule = api_schedule;
1471 coroapi.save = api_save;
1472 coroapi.cede = api_cede; 2444 coroapi.cede = api_cede;
1473 coroapi.cede_notself = api_cede_notself; 2445 coroapi.cede_notself = api_cede_notself;
1474 coroapi.ready = api_ready; 2446 coroapi.ready = api_ready;
1475 coroapi.is_ready = api_is_ready; 2447 coroapi.is_ready = api_is_ready;
1476 coroapi.nready = &coro_nready; 2448 coroapi.nready = coro_nready;
1477 coroapi.current = coro_current; 2449 coroapi.current = coro_current;
1478 2450
1479 GCoroAPI = &coroapi; 2451 GCoroAPI = &coroapi;
1480 sv_setiv (sv, (IV)&coroapi); 2452 sv_setiv (sv, (IV)&coroapi);
1481 SvREADONLY_on (sv); 2453 SvREADONLY_on (sv);
1482 } 2454 }
1483} 2455}
2456
2457void
2458schedule (...)
2459 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2461
2462void
2463cede (...)
2464 CODE:
2465 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2466
2467void
2468cede_notself (...)
2469 CODE:
2470 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1484 2471
1485void 2472void
1486_set_current (SV *current) 2473_set_current (SV *current)
1487 PROTOTYPE: $ 2474 PROTOTYPE: $
1488 CODE: 2475 CODE:
1489 SvREFCNT_dec (SvRV (coro_current)); 2476 SvREFCNT_dec (SvRV (coro_current));
1490 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2477 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2478
2479void
2480_set_readyhook (SV *hook)
2481 PROTOTYPE: $
2482 CODE:
2483 SvREFCNT_dec (coro_readyhook);
2484 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1491 2485
1492int 2486int
1493prio (Coro::State coro, int newprio = 0) 2487prio (Coro::State coro, int newprio = 0)
2488 PROTOTYPE: $;$
1494 ALIAS: 2489 ALIAS:
1495 nice = 1 2490 nice = 1
1496 CODE: 2491 CODE:
1497{ 2492{
1498 RETVAL = coro->prio; 2493 RETVAL = coro->prio;
… …
1513 2508
1514SV * 2509SV *
1515ready (SV *self) 2510ready (SV *self)
1516 PROTOTYPE: $ 2511 PROTOTYPE: $
1517 CODE: 2512 CODE:
1518 RETVAL = boolSV (api_ready (self)); 2513 RETVAL = boolSV (api_ready (aTHX_ self));
1519 OUTPUT: 2514 OUTPUT:
1520 RETVAL 2515 RETVAL
1521 2516
1522int 2517int
1523nready (...) 2518nready (...)
… …
1526 RETVAL = coro_nready; 2521 RETVAL = coro_nready;
1527 OUTPUT: 2522 OUTPUT:
1528 RETVAL 2523 RETVAL
1529 2524
1530# for async_pool speedup 2525# for async_pool speedup
1531SV * 2526void
1532_pool_1 (...) 2527_pool_1 (SV *cb)
1533 CODE: 2528 CODE:
1534{ 2529{
1535 int i, len;
1536 HV *hv = (HV *)SvRV (coro_current); 2530 HV *hv = (HV *)SvRV (coro_current);
2531 struct coro *coro = SvSTATE_hv ((SV *)hv);
1537 AV *defav = GvAV (PL_defgv); 2532 AV *defav = GvAV (PL_defgv);
1538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2533 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1539 AV *invoke_av; 2534 AV *invoke_av;
2535 int i, len;
1540 2536
1541 if (!invoke) 2537 if (!invoke)
1542 XSRETURN_EMPTY; 2538 {
2539 SV *old = PL_diehook;
2540 PL_diehook = 0;
2541 SvREFCNT_dec (old);
2542 croak ("\3async_pool terminate\2\n");
2543 }
2544
2545 SvREFCNT_dec (coro->saved_deffh);
2546 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1543 2547
1544 hv_store (hv, "desc", sizeof ("desc") - 1, 2548 hv_store (hv, "desc", sizeof ("desc") - 1,
1545 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2549 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1546 2550
1547 invoke_av = (AV *)SvRV (invoke); 2551 invoke_av = (AV *)SvRV (invoke);
1548 len = av_len (invoke_av); 2552 len = av_len (invoke_av);
1549 2553
1550 av_clear (defav); 2554 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1551
1552 RETVAL = sv_2mortal (SvREFCNT_inc (AvARRAY (invoke_av)[0]));
1553 2555
1554 if (len > 0) 2556 if (len > 0)
1555 { 2557 {
1556 av_extend (defav, len); 2558 av_fill (defav, len - 1);
1557 for (i = 0; i < len; ++i) 2559 for (i = 0; i < len; ++i)
1558 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2560 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1559 } 2561 }
1560
1561 SvREFCNT_dec (invoke);
1562} 2562}
1563 OUTPUT:
1564 RETVAL
1565 2563
1566void 2564void
1567_pool_2 (...) 2565_pool_2 (SV *cb)
1568 CODE: 2566 CODE:
1569{ 2567{
1570 struct coro *coro = SvSTATE (coro_current); 2568 struct coro *coro = SvSTATE_current;
1571 2569
2570 sv_setsv (cb, &PL_sv_undef);
2571
2572 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2573 coro->saved_deffh = 0;
2574
1572 if (coro_rss (coro) > SvIV (sv_pool_rss) 2575 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1573 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2576 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1574 XSRETURN_YES; 2577 {
2578 SV *old = PL_diehook;
2579 PL_diehook = 0;
2580 SvREFCNT_dec (old);
2581 croak ("\3async_pool terminate\2\n");
2582 }
1575 2583
1576 av_clear (GvAV (PL_defgv)); 2584 av_clear (GvAV (PL_defgv));
1577 hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1, 2585 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2586 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1579 coro->save = CORO_SAVE_DEF; 2587
1580 coro->prio = 0; 2588 coro->prio = 0;
2589
2590 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2591 api_trace (aTHX_ coro_current, 0);
2592
1581 av_push (av_async_pool, newSVsv (coro_current)); 2593 av_push (av_async_pool, newSVsv (coro_current));
1582
1583 XSRETURN_NO;
1584} 2594}
1585 2595
1586 2596
1587MODULE = Coro::State PACKAGE = Coro::AIO 2597MODULE = Coro::State PACKAGE = Coro::AIO
1588 2598
1589SV * 2599void
1590_get_state () 2600_get_state (SV *self)
2601 PROTOTYPE: $
1591 CODE: 2602 PPCODE:
1592{ 2603{
1593 struct io_state *data; 2604 AV *defav = GvAV (PL_defgv);
1594 2605 AV *av = newAV ();
2606 int i;
1595 RETVAL = newSV (sizeof (struct io_state)); 2607 SV *data_sv = newSV (sizeof (struct io_state));
1596 data = (struct io_state *)SvPVX (RETVAL); 2608 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1597 SvCUR_set (RETVAL, sizeof (struct io_state)); 2609 SvCUR_set (data_sv, sizeof (struct io_state));
1598 SvPOK_only (RETVAL); 2610 SvPOK_only (data_sv);
1599 2611
1600 data->errorno = errno; 2612 data->errorno = errno;
1601 data->laststype = PL_laststype; 2613 data->laststype = PL_laststype;
1602 data->laststatval = PL_laststatval; 2614 data->laststatval = PL_laststatval;
1603 data->statcache = PL_statcache; 2615 data->statcache = PL_statcache;
2616
2617 av_extend (av, AvFILLp (defav) + 1 + 1);
2618
2619 for (i = 0; i <= AvFILLp (defav); ++i)
2620 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2621
2622 av_push (av, data_sv);
2623
2624 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626 api_ready (aTHX_ self);
1604} 2627}
1605 OUTPUT:
1606 RETVAL
1607 2628
1608void 2629void
1609_set_state (char *data_) 2630_set_state (SV *state)
1610 PROTOTYPE: $ 2631 PROTOTYPE: $
1611 CODE: 2632 PPCODE:
1612{ 2633{
1613 struct io_state *data = (void *)data_; 2634 AV *av = (AV *)SvRV (state);
2635 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636 int i;
1614 2637
1615 errno = data->errorno; 2638 errno = data->errorno;
1616 PL_laststype = data->laststype; 2639 PL_laststype = data->laststype;
1617 PL_laststatval = data->laststatval; 2640 PL_laststatval = data->laststatval;
1618 PL_statcache = data->statcache; 2641 PL_statcache = data->statcache;
1619}
1620 2642
2643 EXTEND (SP, AvFILLp (av));
2644 for (i = 0; i < AvFILLp (av); ++i)
2645 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646}
2647
2648
2649MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651BOOT:
2652 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654void
2655_schedule (...)
2656 CODE:
2657{
2658 static int incede;
2659
2660 api_cede_notself (aTHX);
2661
2662 ++incede;
2663 while (coro_nready >= incede && api_cede (aTHX))
2664 ;
2665
2666 sv_setsv (sv_activity, &PL_sv_undef);
2667 if (coro_nready >= incede)
2668 {
2669 PUSHMARK (SP);
2670 PUTBACK;
2671 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2672 SPAGAIN;
2673 }
2674
2675 --incede;
2676}
2677
2678
2679MODULE = Coro::State PACKAGE = PerlIO::cede
2680
2681BOOT:
2682 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683
2684MODULE = Coro::State PACKAGE = Coro::Semaphore
2685
2686SV *
2687new (SV *klass, SV *count_ = 0)
2688 CODE:
2689{
2690 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2691 AV *av = newAV ();
2692 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2693 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2694}
2695 OUTPUT:
2696 RETVAL
2697
2698SV *
2699count (SV *self)
2700 CODE:
2701 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2702 OUTPUT:
2703 RETVAL
2704
2705void
2706up (SV *self, int adjust = 1)
2707 ALIAS:
2708 adjust = 1
2709 CODE:
2710 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711
2712void
2713down (SV *self)
2714 CODE:
2715 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2716
2717void
2718try (SV *self)
2719 PPCODE:
2720{
2721 AV *av = (AV *)SvRV (self);
2722 SV *count_sv = AvARRAY (av)[0];
2723 IV count = SvIVX (count_sv);
2724
2725 if (count > 0)
2726 {
2727 --count;
2728 SvIVX (count_sv) = count;
2729 XSRETURN_YES;
2730 }
2731 else
2732 XSRETURN_NO;
2733}
2734
2735void
2736waiters (SV *self)
2737 CODE:
2738{
2739 AV *av = (AV *)SvRV (self);
2740
2741 if (GIMME_V == G_SCALAR)
2742 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2743 else
2744 {
2745 int i;
2746 EXTEND (SP, AvFILLp (av) + 1 - 1);
2747 for (i = 1; i <= AvFILLp (av); ++i)
2748 PUSHs (newSVsv (AvARRAY (av)[i]));
2749 }
2750}
2751

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