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Comparing Coro/Coro/State.xs (file contents):
Revision 1.363 by root, Tue Jul 14 00:55:10 2009 UTC vs.
Revision 1.426 by root, Wed Dec 5 00:19:57 2012 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
… …
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "schmorp.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#if defined(_WIN32)
48# undef HAS_GETTIMEOFDAY
18# undef setjmp 49# undef setjmp
19# undef longjmp 50# undef longjmp
20# undef _exit 51# undef _exit
21# define setjmp _setjmp /* deep magic */ 52# define setjmp _setjmp /* deep magic */
22#else 53#else
23# include <inttypes.h> /* most portable stdint.h */ 54# include <inttypes.h> /* most portable stdint.h */
24#endif 55#endif
25 56
26#ifdef HAVE_MMAP 57#if HAVE_MMAP
27# include <unistd.h> 58# include <unistd.h>
28# include <sys/mman.h> 59# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 60# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 61# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 62# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 82#endif
52 83
53/* the maximum number of idle cctx that will be pooled */ 84/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 85static int cctx_max_idle = 4;
55 86
87#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
88# define HAS_SCOPESTACK_NAME 1
89#endif
90
56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 91#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
57# undef CORO_STACKGUARD 92# undef CORO_STACKGUARD
58#endif 93#endif
59 94
60#ifndef CORO_STACKGUARD 95#ifndef CORO_STACKGUARD
… …
76# define STACKLEVEL ((void *)&stacklevel) 111# define STACKLEVEL ((void *)&stacklevel)
77#endif 112#endif
78 113
79#define IN_DESTRUCT PL_dirty 114#define IN_DESTRUCT PL_dirty
80 115
81#if __GNUC__ >= 3
82# define attribute(x) __attribute__(x)
83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
85#else
86# define attribute(x)
87# define expect(expr,value) (expr)
88# define INLINE static
89#endif
90
91#define expect_false(expr) expect ((expr) != 0, 0)
92#define expect_true(expr) expect ((expr) != 0, 1)
93
94#define NOINLINE attribute ((noinline))
95
96#include "CoroAPI.h" 116#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */ 117#define GCoroAPI (&coroapi) /* very sneaky */
98 118
99#ifdef USE_ITHREADS 119#ifdef USE_ITHREADS
100# if CORO_PTHREAD 120# if CORO_PTHREAD
… …
116static void (*u2time)(pTHX_ UV ret[2]); 136static void (*u2time)(pTHX_ UV ret[2]);
117 137
118/* we hijack an hopefully unused CV flag for our purposes */ 138/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000 139#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX); 140static OP *pp_slf (pTHX);
141static void slf_destroy (pTHX_ struct coro *coro);
121 142
122static U32 cctx_gen; 143static U32 cctx_gen;
123static size_t cctx_stacksize = CORO_STACKSIZE; 144static size_t cctx_stacksize = CORO_STACKSIZE;
124static struct CoroAPI coroapi; 145static struct CoroAPI coroapi;
125static AV *main_mainstack; /* used to differentiate between $main and others */ 146static AV *main_mainstack; /* used to differentiate between $main and others */
… …
142static SV *sv_pool_size; 163static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */ 164static SV *sv_async_pool_idle; /* description string */
144static AV *av_async_pool; /* idle pool */ 165static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */ 166static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler; 167static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
148 168
149/* Coro::AnyEvent */ 169/* Coro::AnyEvent */
150static SV *sv_activity; 170static SV *sv_activity;
151 171
152/* enable processtime/realtime profiling */ 172/* enable processtime/realtime profiling */
… …
156static char times_valid; 176static char times_valid;
157 177
158static struct coro_cctx *cctx_first; 178static struct coro_cctx *cctx_first;
159static int cctx_count, cctx_idle; 179static int cctx_count, cctx_idle;
160 180
161enum { 181enum
182{
162 CC_MAPPED = 0x01, 183 CC_MAPPED = 0x01,
163 CC_NOREUSE = 0x02, /* throw this away after tracing */ 184 CC_NOREUSE = 0x02, /* throw this away after tracing */
164 CC_TRACE = 0x04, 185 CC_TRACE = 0x04,
165 CC_TRACE_SUB = 0x08, /* trace sub calls */ 186 CC_TRACE_SUB = 0x08, /* trace sub calls */
166 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
176 void *sptr; 197 void *sptr;
177 size_t ssize; 198 size_t ssize;
178 199
179 /* cpu state */ 200 /* cpu state */
180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 201 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
202#ifndef NDEBUG
181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 203 JMPENV *idle_te; /* same as idle_sp, but for top_env */
204#endif
182 JMPENV *top_env; 205 JMPENV *top_env;
183 coro_context cctx; 206 coro_context cctx;
184 207
185 U32 gen; 208 U32 gen;
186#if CORO_USE_VALGRIND 209#if CORO_USE_VALGRIND
187 int valgrind_id; 210 int valgrind_id;
188#endif 211#endif
189 unsigned char flags; 212 unsigned char flags;
190} coro_cctx; 213} coro_cctx;
191 214
192coro_cctx *cctx_current; /* the currently running cctx */ 215static coro_cctx *cctx_current; /* the currently running cctx */
193 216
194/*****************************************************************************/ 217/*****************************************************************************/
195 218
219static MGVTBL coro_state_vtbl;
220
196enum { 221enum
222{
197 CF_RUNNING = 0x0001, /* coroutine is running */ 223 CF_RUNNING = 0x0001, /* coroutine is running */
198 CF_READY = 0x0002, /* coroutine is ready */ 224 CF_READY = 0x0002, /* coroutine is ready */
199 CF_NEW = 0x0004, /* has never been switched to */ 225 CF_NEW = 0x0004, /* has never been switched to */
200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 226 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 227 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
228 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
202}; 229};
203 230
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct 232typedef struct
206{ 233{
207 SV *defsv;
208 AV *defav;
209 SV *errsv;
210 SV *irsgv;
211 HV *hinthv;
212#define VAR(name,type) type name; 234 #define VARx(name,expr,type) type name;
213# include "state.h" 235 #include "state.h"
214#undef VAR
215} perl_slots; 236} perl_slots;
216 237
238/* how many context stack entries do we need for perl_slots */
217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
218 240
219/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
220struct coro { 242struct coro
243{
221 /* the C coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
222 coro_cctx *cctx; 245 coro_cctx *cctx;
223 246
224 /* ready queue */ 247 /* ready queue */
225 struct coro *next_ready; 248 struct coro *next_ready;
… …
227 /* state data */ 250 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */ 251 struct CoroSLF slf_frame; /* saved slf frame */
229 AV *mainstack; 252 AV *mainstack;
230 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
231 254
232 CV *startcv; /* the CV to execute */ 255 CV *startcv; /* the CV to execute */
233 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
234 int refcnt; /* coroutines are refcounted, yes */
235 int flags; /* CF_ flags */ 257 int flags; /* CF_ flags */
236 HV *hv; /* the perl hash associated with this coro, if any */ 258 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
238 259
239 /* statistics */ 260 /* statistics */
240 int usecount; /* number of transfers to this coro */ 261 int usecount; /* number of transfers to this coro */
241 262
242 /* coro process data */ 263 /* coro process data */
243 int prio; 264 int prio;
244 SV *except; /* exception to be thrown */ 265 SV *except; /* exception to be thrown */
245 SV *rouse_cb; 266 SV *rouse_cb; /* last rouse callback */
267 AV *on_destroy; /* callbacks or coros to notify on destroy */
268 AV *status; /* the exit status list */
246 269
247 /* async_pool */ 270 /* async_pool */
248 SV *saved_deffh; 271 SV *saved_deffh;
249 SV *invoke_cb; 272 SV *invoke_cb;
250 AV *invoke_av; 273 AV *invoke_av;
251 274
252 /* on_enter/on_leave */ 275 /* on_enter/on_leave */
253 AV *on_enter; 276 AV *on_enter;
254 AV *on_leave; 277 AV *on_leave;
255 278
279 /* swap_sv */
280 AV *swap_sv;
281
256 /* times */ 282 /* times */
257 coro_ts t_cpu, t_real; 283 coro_ts t_cpu, t_real;
258 284
259 /* linked list */ 285 /* linked list */
260 struct coro *next, *prev; 286 struct coro *next, *prev;
… …
263typedef struct coro *Coro__State; 289typedef struct coro *Coro__State;
264typedef struct coro *Coro__State_or_hashref; 290typedef struct coro *Coro__State_or_hashref;
265 291
266/* the following variables are effectively part of the perl context */ 292/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */ 293/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */ 294/* the main reason we don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */ 295static struct CoroSLF slf_frame; /* the current slf frame */
270 296
271/** Coro ********************************************************************/ 297/** Coro ********************************************************************/
272 298
273#define CORO_PRIO_MAX 3 299#define CORO_PRIO_MAX 3
… …
279 305
280/* for Coro.pm */ 306/* for Coro.pm */
281static SV *coro_current; 307static SV *coro_current;
282static SV *coro_readyhook; 308static SV *coro_readyhook;
283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 309static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate; 310static CV *cv_coro_run;
285static struct coro *coro_first; 311static struct coro *coro_first;
286#define coro_nready coroapi.nready 312#define coro_nready coroapi.nready
287 313
314/** JIT *********************************************************************/
315
316#if CORO_JIT
317 /* APPLE doesn't have HAVE_MMAP though */
318 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
319 #ifndef CORO_JIT_TYPE
320 #if __x86_64 && CORO_JIT_UNIXY
321 #define CORO_JIT_TYPE "amd64-unix"
322 #elif __i386 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "x86-unix"
324 #endif
325 #endif
326#endif
327
328#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
329 #undef CORO_JIT
330#endif
331
332#if CORO_JIT
333 typedef void (*load_save_perl_slots_type)(perl_slots *);
334 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
335#endif
336
337/** Coro::Select ************************************************************/
338
339static OP *(*coro_old_pp_sselect) (pTHX);
340static SV *coro_select_select;
341
342/* horrible hack, but if it works... */
343static OP *
344coro_pp_sselect (pTHX)
345{
346 dSP;
347 PUSHMARK (SP - 4); /* fake argument list */
348 XPUSHs (coro_select_select);
349 PUTBACK;
350
351 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
352 PL_op->op_flags |= OPf_STACKED;
353 PL_op->op_private = 0;
354 return PL_ppaddr [OP_ENTERSUB](aTHX);
355}
356
357/** time stuff **************************************************************/
358
359#ifdef HAS_GETTIMEOFDAY
360
361ecb_inline void
362coro_u2time (pTHX_ UV ret[2])
363{
364 struct timeval tv;
365 gettimeofday (&tv, 0);
366
367 ret [0] = tv.tv_sec;
368 ret [1] = tv.tv_usec;
369}
370
371ecb_inline double
372coro_nvtime (void)
373{
374 struct timeval tv;
375 gettimeofday (&tv, 0);
376
377 return tv.tv_sec + tv.tv_usec * 1e-6;
378}
379
380ecb_inline void
381time_init (pTHX)
382{
383 nvtime = coro_nvtime;
384 u2time = coro_u2time;
385}
386
387#else
388
389ecb_inline void
390time_init (pTHX)
391{
392 SV **svp;
393
394 require_pv ("Time/HiRes.pm");
395
396 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
397
398 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
399 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
400
401 nvtime = INT2PTR (double (*)(), SvIV (*svp));
402
403 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
404 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
405}
406
407#endif
408
288/** lowlevel stuff **********************************************************/ 409/** lowlevel stuff **********************************************************/
289 410
290static SV * 411static SV * ecb_noinline
291coro_get_sv (pTHX_ const char *name, int create) 412coro_get_sv (pTHX_ const char *name, int create)
292{ 413{
293#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
294 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
295 get_sv (name, create); 416 get_sv (name, create);
296#endif 417#endif
297 return get_sv (name, create); 418 return get_sv (name, create);
298} 419}
299 420
300static AV * 421static AV * ecb_noinline
301coro_get_av (pTHX_ const char *name, int create) 422coro_get_av (pTHX_ const char *name, int create)
302{ 423{
303#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_av (name, create); 426 get_av (name, create);
306#endif 427#endif
307 return get_av (name, create); 428 return get_av (name, create);
308} 429}
309 430
310static HV * 431static HV * ecb_noinline
311coro_get_hv (pTHX_ const char *name, int create) 432coro_get_hv (pTHX_ const char *name, int create)
312{ 433{
313#if PERL_VERSION_ATLEAST (5,10,0) 434#if PERL_VERSION_ATLEAST (5,10,0)
314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 435 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
315 get_hv (name, create); 436 get_hv (name, create);
316#endif 437#endif
317 return get_hv (name, create); 438 return get_hv (name, create);
318} 439}
319 440
320INLINE void 441ecb_inline void
321coro_times_update () 442coro_times_update (void)
322{ 443{
323#ifdef coro_clock_gettime 444#ifdef coro_clock_gettime
324 struct timespec ts; 445 struct timespec ts;
325 446
326 ts.tv_sec = ts.tv_nsec = 0; 447 ts.tv_sec = ts.tv_nsec = 0;
… …
338 time_real [0] = tv [0]; 459 time_real [0] = tv [0];
339 time_real [1] = tv [1] * 1000; 460 time_real [1] = tv [1] * 1000;
340#endif 461#endif
341} 462}
342 463
343INLINE void 464ecb_inline void
344coro_times_add (struct coro *c) 465coro_times_add (struct coro *c)
345{ 466{
346 c->t_real [1] += time_real [1]; 467 c->t_real [1] += time_real [1];
347 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 468 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
348 c->t_real [0] += time_real [0]; 469 c->t_real [0] += time_real [0];
… …
350 c->t_cpu [1] += time_cpu [1]; 471 c->t_cpu [1] += time_cpu [1];
351 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 472 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
352 c->t_cpu [0] += time_cpu [0]; 473 c->t_cpu [0] += time_cpu [0];
353} 474}
354 475
355INLINE void 476ecb_inline void
356coro_times_sub (struct coro *c) 477coro_times_sub (struct coro *c)
357{ 478{
358 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 479 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
359 c->t_real [1] -= time_real [1]; 480 c->t_real [1] -= time_real [1];
360 c->t_real [0] -= time_real [0]; 481 c->t_real [0] -= time_real [0];
… …
368/* magic glue */ 489/* magic glue */
369 490
370#define CORO_MAGIC_type_cv 26 491#define CORO_MAGIC_type_cv 26
371#define CORO_MAGIC_type_state PERL_MAGIC_ext 492#define CORO_MAGIC_type_state PERL_MAGIC_ext
372 493
373#define CORO_MAGIC_NN(sv, type) \ 494#define CORO_MAGIC_NN(sv, type) \
374 (expect_true (SvMAGIC (sv)->mg_type == type) \ 495 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
375 ? SvMAGIC (sv) \ 496 ? SvMAGIC (sv) \
376 : mg_find (sv, type)) 497 : mg_find (sv, type))
377 498
378#define CORO_MAGIC(sv, type) \ 499#define CORO_MAGIC(sv, type) \
379 (expect_true (SvMAGIC (sv)) \ 500 (ecb_expect_true (SvMAGIC (sv)) \
380 ? CORO_MAGIC_NN (sv, type) \ 501 ? CORO_MAGIC_NN (sv, type) \
381 : 0) 502 : 0)
382 503
383#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 504#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
384#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 505#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
385 506
386INLINE struct coro * 507ecb_inline MAGIC *
508SvSTATEhv_p (pTHX_ SV *coro)
509{
510 MAGIC *mg;
511
512 if (ecb_expect_true (
513 SvTYPE (coro) == SVt_PVHV
514 && (mg = CORO_MAGIC_state (coro))
515 && mg->mg_virtual == &coro_state_vtbl
516 ))
517 return mg;
518
519 return 0;
520}
521
522ecb_inline struct coro *
387SvSTATE_ (pTHX_ SV *coro) 523SvSTATE_ (pTHX_ SV *coro)
388{ 524{
389 HV *stash;
390 MAGIC *mg; 525 MAGIC *mg;
391 526
392 if (SvROK (coro)) 527 if (SvROK (coro))
393 coro = SvRV (coro); 528 coro = SvRV (coro);
394 529
395 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 530 mg = SvSTATEhv_p (aTHX_ coro);
531 if (!mg)
396 croak ("Coro::State object required"); 532 croak ("Coro::State object required");
397 533
398 stash = SvSTASH (coro);
399 if (expect_false (stash != coro_stash && stash != coro_state_stash))
400 {
401 /* very slow, but rare, check */
402 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
403 croak ("Coro::State object required");
404 }
405
406 mg = CORO_MAGIC_state (coro);
407 return (struct coro *)mg->mg_ptr; 534 return (struct coro *)mg->mg_ptr;
408} 535}
409 536
410#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 537#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
411 538
… …
414#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 541#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
415 542
416/*****************************************************************************/ 543/*****************************************************************************/
417/* padlist management and caching */ 544/* padlist management and caching */
418 545
419static AV * 546ecb_inline PADLIST *
420coro_derive_padlist (pTHX_ CV *cv) 547coro_derive_padlist (pTHX_ CV *cv)
421{ 548{
422 AV *padlist = CvPADLIST (cv); 549 PADLIST *padlist = CvPADLIST (cv);
423 AV *newpadlist, *newpad; 550 PADLIST *newpadlist;
551 PAD *newpad;
552 PADOFFSET const off = PadlistMAX (padlist) + 1;
424 553
425 newpadlist = newAV (); 554 newPADLIST(newpadlist);
555#if !PERL_VERSION_ATLEAST(5,15,3)
556 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
426 AvREAL_off (newpadlist); 557 AvREAL_off (newpadlist);
558#endif
427#if PERL_VERSION_ATLEAST (5,10,0) 559#if PERL_VERSION_ATLEAST (5,10,0)
428 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 560 Perl_pad_push (aTHX_ padlist, off);
429#else 561#else
430 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 562 Perl_pad_push (aTHX_ padlist, off, 1);
431#endif 563#endif
432 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 564 newpad = PadlistARRAY (padlist)[off];
433 --AvFILLp (padlist); 565 PadlistMAX (padlist) = off - 1;
434 566
435 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 567 /* Already extended to 2 elements by newPADLIST. */
436 av_store (newpadlist, 1, (SV *)newpad); 568 PadlistMAX (newpadlist) = 1;
569 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
570 PadlistARRAY (newpadlist)[1] = newpad;
437 571
438 return newpadlist; 572 return newpadlist;
439} 573}
440 574
441static void 575ecb_inline void
442free_padlist (pTHX_ AV *padlist) 576free_padlist (pTHX_ PADLIST *padlist)
443{ 577{
444 /* may be during global destruction */ 578 /* may be during global destruction */
445 if (!IN_DESTRUCT) 579 if (!IN_DESTRUCT)
446 { 580 {
447 I32 i = AvFILLp (padlist); 581 I32 i = PadlistMAX (padlist);
448 582
449 while (i > 0) /* special-case index 0 */ 583 while (i > 0) /* special-case index 0 */
450 { 584 {
451 /* we try to be extra-careful here */ 585 /* we try to be extra-careful here */
452 AV *av = (AV *)AvARRAY (padlist)[i--]; 586 PAD *pad = PadlistARRAY (padlist)[i--];
453 I32 j = AvFILLp (av); 587 I32 j = PadMAX (pad);
454 588
455 while (j >= 0) 589 while (j >= 0)
456 SvREFCNT_dec (AvARRAY (av)[j--]); 590 SvREFCNT_dec (PadARRAY (pad)[j--]);
457 591
458 AvFILLp (av) = -1; 592 PadMAX (pad) = -1;
459 SvREFCNT_dec (av); 593 SvREFCNT_dec (pad);
460 } 594 }
461 595
462 SvREFCNT_dec (AvARRAY (padlist)[0]); 596 SvREFCNT_dec (PadlistNAMES (padlist));
463 597
598#ifdef NEWPADAPI
599 Safefree (PadlistARRAY (padlist));
600 Safefree (padlist);
601#else
464 AvFILLp (padlist) = -1; 602 AvFILLp (padlist) = -1;
603 AvREAL_off (padlist);
465 SvREFCNT_dec ((SV*)padlist); 604 SvREFCNT_dec ((SV*)padlist);
605#endif
466 } 606 }
467} 607}
468 608
469static int 609static int
470coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 610coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
471{ 611{
472 AV *padlist; 612 PADLIST *padlist;
473 AV *av = (AV *)mg->mg_obj; 613 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
614 size_t len = *(size_t *)mg->mg_ptr;
474 615
475 /* perl manages to free our internal AV and _then_ call us */ 616 /* perl manages to free our internal AV and _then_ call us */
476 if (IN_DESTRUCT) 617 if (IN_DESTRUCT)
477 return 0; 618 return 0;
478 619
479 /* casting is fun. */ 620 while (len--)
480 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
481 free_padlist (aTHX_ padlist); 621 free_padlist (aTHX_ padlists[len]);
482
483 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
484 622
485 return 0; 623 return 0;
486} 624}
487 625
488static MGVTBL coro_cv_vtbl = { 626static MGVTBL coro_cv_vtbl = {
489 0, 0, 0, 0, 627 0, 0, 0, 0,
490 coro_cv_free 628 coro_cv_free
491}; 629};
492 630
493/* the next two functions merely cache the padlists */ 631/* the next two functions merely cache the padlists */
494static void 632ecb_inline void
495get_padlist (pTHX_ CV *cv) 633get_padlist (pTHX_ CV *cv)
496{ 634{
497 MAGIC *mg = CORO_MAGIC_cv (cv); 635 MAGIC *mg = CORO_MAGIC_cv (cv);
498 AV *av; 636 size_t *lenp;
499 637
500 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 638 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
501 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 639 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
502 else 640 else
503 { 641 {
504#if CORO_PREFER_PERL_FUNCTIONS 642#if CORO_PREFER_PERL_FUNCTIONS
505 /* this is probably cleaner? but also slower! */ 643 /* this is probably cleaner? but also slower! */
506 /* in practise, it seems to be less stable */ 644 /* in practise, it seems to be less stable */
… …
512 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 650 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
513#endif 651#endif
514 } 652 }
515} 653}
516 654
517static void 655ecb_inline void
518put_padlist (pTHX_ CV *cv) 656put_padlist (pTHX_ CV *cv)
519{ 657{
520 MAGIC *mg = CORO_MAGIC_cv (cv); 658 MAGIC *mg = CORO_MAGIC_cv (cv);
521 AV *av;
522 659
523 if (expect_false (!mg)) 660 if (ecb_expect_false (!mg))
661 {
524 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 662 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
663 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
664 mg->mg_len = 1; /* so mg_free frees mg_ptr */
665 }
666 else
667 Renew (mg->mg_ptr,
668 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
669 char);
525 670
526 av = (AV *)mg->mg_obj; 671 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
527
528 if (expect_false (AvFILLp (av) >= AvMAX (av)))
529 av_extend (av, AvFILLp (av) + 1);
530
531 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
532} 672}
533 673
534/** load & save, init *******************************************************/ 674/** load & save, init *******************************************************/
675
676ecb_inline void
677swap_sv (SV *a, SV *b)
678{
679 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
680 SV tmp;
681
682 /* swap sv_any */
683 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
684
685 /* swap sv_flags */
686 SvFLAGS (&tmp) = SvFLAGS (a);
687 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
688 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
689
690#if PERL_VERSION_ATLEAST (5,10,0)
691 /* perl 5.10 and later complicates this _quite_ a bit, but it also
692 * is much faster, so no quarrels here. alternatively, we could
693 * sv_upgrade to avoid this.
694 */
695 {
696 /* swap sv_u */
697 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
698
699 /* if SvANY points to the head, we need to adjust the pointers,
700 * as the pointer for a still points to b, and maybe vice versa.
701 */
702 #define svany_in_head(type) \
703 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
704
705 if (svany_in_head (SvTYPE (a)))
706 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
707
708 if (svany_in_head (SvTYPE (b)))
709 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
710 }
711#endif
712}
713
714/* swap sv heads, at least logically */
715static void
716swap_svs (pTHX_ Coro__State c)
717{
718 int i;
719
720 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
721 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
722}
723
724#define SWAP_SVS(coro) \
725 if (ecb_expect_false ((coro)->swap_sv)) \
726 swap_svs (aTHX_ (coro))
535 727
536static void 728static void
537on_enterleave_call (pTHX_ SV *cb); 729on_enterleave_call (pTHX_ SV *cb);
538 730
539static void 731static void
… …
542 perl_slots *slot = c->slot; 734 perl_slots *slot = c->slot;
543 c->slot = 0; 735 c->slot = 0;
544 736
545 PL_mainstack = c->mainstack; 737 PL_mainstack = c->mainstack;
546 738
547 GvSV (PL_defgv) = slot->defsv; 739#if CORO_JIT
548 GvAV (PL_defgv) = slot->defav; 740 load_perl_slots (slot);
549 GvSV (PL_errgv) = slot->errsv; 741#else
550 GvSV (irsgv) = slot->irsgv;
551 GvHV (PL_hintgv) = slot->hinthv;
552
553 #define VAR(name,type) PL_ ## name = slot->name; 742 #define VARx(name,expr,type) expr = slot->name;
554 # include "state.h" 743 #include "state.h"
555 #undef VAR 744#endif
556 745
557 { 746 {
558 dSP; 747 dSP;
559 748
560 CV *cv; 749 CV *cv;
561 750
562 /* now do the ugly restore mess */ 751 /* now do the ugly restore mess */
563 while (expect_true (cv = (CV *)POPs)) 752 while (ecb_expect_true (cv = (CV *)POPs))
564 { 753 {
565 put_padlist (aTHX_ cv); /* mark this padlist as available */ 754 put_padlist (aTHX_ cv); /* mark this padlist as available */
566 CvDEPTH (cv) = PTR2IV (POPs); 755 CvDEPTH (cv) = PTR2IV (POPs);
567 CvPADLIST (cv) = (AV *)POPs; 756 CvPADLIST (cv) = (PADLIST *)POPs;
568 } 757 }
569 758
570 PUTBACK; 759 PUTBACK;
571 } 760 }
572 761
573 slf_frame = c->slf_frame; 762 slf_frame = c->slf_frame;
574 CORO_THROW = c->except; 763 CORO_THROW = c->except;
575 764
576 if (expect_false (enable_times)) 765 if (ecb_expect_false (enable_times))
577 { 766 {
578 if (expect_false (!times_valid)) 767 if (ecb_expect_false (!times_valid))
579 coro_times_update (); 768 coro_times_update ();
580 769
581 coro_times_sub (c); 770 coro_times_sub (c);
582 } 771 }
583 772
584 if (expect_false (c->on_enter)) 773 if (ecb_expect_false (c->on_enter))
585 { 774 {
586 int i; 775 int i;
587 776
588 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 777 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
589 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 778 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
590 } 779 }
780
781 SWAP_SVS (c);
591} 782}
592 783
593static void 784static void
594save_perl (pTHX_ Coro__State c) 785save_perl (pTHX_ Coro__State c)
595{ 786{
787 SWAP_SVS (c);
788
596 if (expect_false (c->on_leave)) 789 if (ecb_expect_false (c->on_leave))
597 { 790 {
598 int i; 791 int i;
599 792
600 for (i = AvFILLp (c->on_leave); i >= 0; --i) 793 for (i = AvFILLp (c->on_leave); i >= 0; --i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 794 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
602 } 795 }
603 796
604 times_valid = 0; 797 times_valid = 0;
605 798
606 if (expect_false (enable_times)) 799 if (ecb_expect_false (enable_times))
607 { 800 {
608 coro_times_update (); times_valid = 1; 801 coro_times_update (); times_valid = 1;
609 coro_times_add (c); 802 coro_times_add (c);
610 } 803 }
611 804
… …
625 818
626 XPUSHs (Nullsv); 819 XPUSHs (Nullsv);
627 /* this loop was inspired by pp_caller */ 820 /* this loop was inspired by pp_caller */
628 for (;;) 821 for (;;)
629 { 822 {
630 while (expect_true (cxix >= 0)) 823 while (ecb_expect_true (cxix >= 0))
631 { 824 {
632 PERL_CONTEXT *cx = &ccstk[cxix--]; 825 PERL_CONTEXT *cx = &ccstk[cxix--];
633 826
634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 827 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
635 { 828 {
636 CV *cv = cx->blk_sub.cv; 829 CV *cv = cx->blk_sub.cv;
637 830
638 if (expect_true (CvDEPTH (cv))) 831 if (ecb_expect_true (CvDEPTH (cv)))
639 { 832 {
640 EXTEND (SP, 3); 833 EXTEND (SP, 3);
641 PUSHs ((SV *)CvPADLIST (cv)); 834 PUSHs ((SV *)CvPADLIST (cv));
642 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 835 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
643 PUSHs ((SV *)cv); 836 PUSHs ((SV *)cv);
… …
646 get_padlist (aTHX_ cv); 839 get_padlist (aTHX_ cv);
647 } 840 }
648 } 841 }
649 } 842 }
650 843
651 if (expect_true (top_si->si_type == PERLSI_MAIN)) 844 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
652 break; 845 break;
653 846
654 top_si = top_si->si_prev; 847 top_si = top_si->si_prev;
655 ccstk = top_si->si_cxstack; 848 ccstk = top_si->si_cxstack;
656 cxix = top_si->si_cxix; 849 cxix = top_si->si_cxix;
… …
658 851
659 PUTBACK; 852 PUTBACK;
660 } 853 }
661 854
662 /* allocate some space on the context stack for our purposes */ 855 /* allocate some space on the context stack for our purposes */
663 /* we manually unroll here, as usually 2 slots is enough */ 856 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
664 if (SLOT_COUNT >= 1) CXINC;
665 if (SLOT_COUNT >= 2) CXINC;
666 if (SLOT_COUNT >= 3) CXINC;
667 { 857 {
668 unsigned int i; 858 unsigned int i;
859
669 for (i = 3; i < SLOT_COUNT; ++i) 860 for (i = 0; i < SLOT_COUNT; ++i)
670 CXINC; 861 CXINC;
671 } 862
672 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 863 cxstack_ix -= SLOT_COUNT; /* undo allocation */
864 }
673 865
674 c->mainstack = PL_mainstack; 866 c->mainstack = PL_mainstack;
675 867
676 { 868 {
677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 869 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
678 870
679 slot->defav = GvAV (PL_defgv); 871#if CORO_JIT
680 slot->defsv = DEFSV; 872 save_perl_slots (slot);
681 slot->errsv = ERRSV; 873#else
682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
684
685 #define VAR(name,type) slot->name = PL_ ## name; 874 #define VARx(name,expr,type) slot->name = expr;
686 # include "state.h" 875 #include "state.h"
687 #undef VAR 876#endif
688 } 877 }
689} 878}
690 879
691/* 880/*
692 * allocate various perl stacks. This is almost an exact copy 881 * allocate various perl stacks. This is almost an exact copy
… …
698# define coro_init_stacks(thx) init_stacks () 887# define coro_init_stacks(thx) init_stacks ()
699#else 888#else
700static void 889static void
701coro_init_stacks (pTHX) 890coro_init_stacks (pTHX)
702{ 891{
703 PL_curstackinfo = new_stackinfo(32, 8); 892 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
704 PL_curstackinfo->si_type = PERLSI_MAIN; 893 PL_curstackinfo->si_type = PERLSI_MAIN;
705 PL_curstack = PL_curstackinfo->si_stack; 894 PL_curstack = PL_curstackinfo->si_stack;
706 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 895 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
707 896
708 PL_stack_base = AvARRAY(PL_curstack); 897 PL_stack_base = AvARRAY(PL_curstack);
… …
723#endif 912#endif
724 913
725 New(54,PL_scopestack,8,I32); 914 New(54,PL_scopestack,8,I32);
726 PL_scopestack_ix = 0; 915 PL_scopestack_ix = 0;
727 PL_scopestack_max = 8; 916 PL_scopestack_max = 8;
917#if HAS_SCOPESTACK_NAME
918 New(54,PL_scopestack_name,8,const char*);
919#endif
728 920
729 New(54,PL_savestack,24,ANY); 921 New(54,PL_savestack,24,ANY);
730 PL_savestack_ix = 0; 922 PL_savestack_ix = 0;
731 PL_savestack_max = 24; 923 PL_savestack_max = 24;
732 924
… …
760 } 952 }
761 953
762 Safefree (PL_tmps_stack); 954 Safefree (PL_tmps_stack);
763 Safefree (PL_markstack); 955 Safefree (PL_markstack);
764 Safefree (PL_scopestack); 956 Safefree (PL_scopestack);
957#if HAS_SCOPESTACK_NAME
958 Safefree (PL_scopestack_name);
959#endif
765 Safefree (PL_savestack); 960 Safefree (PL_savestack);
766#if !PERL_VERSION_ATLEAST (5,10,0) 961#if !PERL_VERSION_ATLEAST (5,10,0)
767 Safefree (PL_retstack); 962 Safefree (PL_retstack);
768#endif 963#endif
769} 964}
… …
815#endif 1010#endif
816 1011
817/* 1012/*
818 * This overrides the default magic get method of %SIG elements. 1013 * This overrides the default magic get method of %SIG elements.
819 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1014 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
820 * and instead of trying to save and restore the hash elements, we just provide 1015 * and instead of trying to save and restore the hash elements (extremely slow),
821 * readback here. 1016 * we just provide our own readback here.
822 */ 1017 */
823static int 1018static int ecb_cold
824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1019coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
825{ 1020{
826 const char *s = MgPV_nolen_const (mg); 1021 const char *s = MgPV_nolen_const (mg);
827 1022
828 if (*s == '_') 1023 if (*s == '_')
829 { 1024 {
830 SV **svp = 0; 1025 SV **svp = 0;
831 1026
832 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1027 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1028 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
834 1029
835 if (svp) 1030 if (svp)
836 { 1031 {
837 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1032 SV *ssv;
1033
1034 if (!*svp)
1035 ssv = &PL_sv_undef;
1036 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1037 ssv = sv_2mortal (newRV_inc (*svp));
1038 else
1039 ssv = *svp;
1040
1041 sv_setsv (sv, ssv);
838 return 0; 1042 return 0;
839 } 1043 }
840 } 1044 }
841 1045
842 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1046 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
843} 1047}
844 1048
845static int 1049static int ecb_cold
846coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1050coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
847{ 1051{
848 const char *s = MgPV_nolen_const (mg); 1052 const char *s = MgPV_nolen_const (mg);
849 1053
850 if (*s == '_') 1054 if (*s == '_')
… …
864 } 1068 }
865 1069
866 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1070 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
867} 1071}
868 1072
869static int 1073static int ecb_cold
870coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1074coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
871{ 1075{
872 const char *s = MgPV_nolen_const (mg); 1076 const char *s = MgPV_nolen_const (mg);
873 1077
874 if (*s == '_') 1078 if (*s == '_')
… …
907slf_check_repeat (pTHX_ struct CoroSLF *frame) 1111slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{ 1112{
909 return 1; 1113 return 1;
910} 1114}
911 1115
912static UNOP coro_setup_op; 1116static UNOP init_perl_op;
913 1117
914static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1118ecb_noinline static void /* noinline to keep it out of the transfer fast path */
915coro_setup (pTHX_ struct coro *coro) 1119init_perl (pTHX_ struct coro *coro)
916{ 1120{
917 /* 1121 /*
918 * emulate part of the perl startup here. 1122 * emulate part of the perl startup here.
919 */ 1123 */
920 coro_init_stacks (aTHX); 1124 coro_init_stacks (aTHX);
… …
927 PL_comppad_name_fill = 0; 1131 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0; 1132 PL_comppad_name_floor = 0;
929 PL_curpm = 0; 1133 PL_curpm = 0;
930 PL_curpad = 0; 1134 PL_curpad = 0;
931 PL_localizing = 0; 1135 PL_localizing = 0;
932 PL_dirty = 0;
933 PL_restartop = 0; 1136 PL_restartop = 0;
934#if PERL_VERSION_ATLEAST (5,10,0) 1137#if PERL_VERSION_ATLEAST (5,10,0)
935 PL_parser = 0; 1138 PL_parser = 0;
936#endif 1139#endif
937 PL_hints = 0; 1140 PL_hints = 0;
938 1141
939 /* recreate the die/warn hooks */ 1142 /* recreate the die/warn hooks */
940 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1143 PL_diehook = SvREFCNT_inc (rv_diehook);
941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1144 PL_warnhook = SvREFCNT_inc (rv_warnhook);
942 1145
943 GvSV (PL_defgv) = newSV (0); 1146 GvSV (PL_defgv) = newSV (0);
944 GvAV (PL_defgv) = coro->args; coro->args = 0; 1147 GvAV (PL_defgv) = coro->args; coro->args = 0;
945 GvSV (PL_errgv) = newSV (0); 1148 GvSV (PL_errgv) = newSV (0);
946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1149 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0; 1150 GvHV (PL_hintgv) = 0;
… …
967 /* this newly created coroutine might be run on an existing cctx which most 1170 /* this newly created coroutine might be run on an existing cctx which most
968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1171 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
969 */ 1172 */
970 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1173 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1174 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1175 slf_frame.destroy = 0;
972 1176
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1177 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op; 1178 init_perl_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB; 1179 init_perl_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf; 1180 init_perl_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */ 1181 /* no flags etc. required, as an init function won't be called */
978 1182
979 PL_op = (OP *)&coro_setup_op; 1183 PL_op = (OP *)&init_perl_op;
980 1184
981 /* copy throw, in case it was set before coro_setup */ 1185 /* copy throw, in case it was set before init_perl */
982 CORO_THROW = coro->except; 1186 CORO_THROW = coro->except;
983 1187
1188 SWAP_SVS (coro);
1189
984 if (expect_false (enable_times)) 1190 if (ecb_expect_false (enable_times))
985 { 1191 {
986 coro_times_update (); 1192 coro_times_update ();
987 coro_times_sub (coro); 1193 coro_times_sub (coro);
988 } 1194 }
989} 1195}
… …
1008 dounwind (-1); 1214 dounwind (-1);
1009 } 1215 }
1010} 1216}
1011 1217
1012static void 1218static void
1013coro_destruct_perl (pTHX_ struct coro *coro) 1219destroy_perl (pTHX_ struct coro *coro)
1014{ 1220{
1015 SV *svf [9]; 1221 SV *svf [9];
1016 1222
1017 { 1223 {
1224 SV *old_current = SvRV (coro_current);
1018 struct coro *current = SvSTATE_current; 1225 struct coro *current = SvSTATE (old_current);
1019 1226
1020 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1227 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1021 1228
1022 save_perl (aTHX_ current); 1229 save_perl (aTHX_ current);
1230
1231 /* this will cause transfer_check to croak on block*/
1232 SvRV_set (coro_current, (SV *)coro->hv);
1233
1023 load_perl (aTHX_ coro); 1234 load_perl (aTHX_ coro);
1024 1235
1025 coro_unwind_stacks (aTHX); 1236 coro_unwind_stacks (aTHX);
1237
1238 /* restore swapped sv's */
1239 SWAP_SVS (coro);
1240
1026 coro_destruct_stacks (aTHX); 1241 coro_destruct_stacks (aTHX);
1027 1242
1028 // now save some sv's to be free'd later 1243 /* now save some sv's to be free'd later */
1029 svf [0] = GvSV (PL_defgv); 1244 svf [0] = GvSV (PL_defgv);
1030 svf [1] = (SV *)GvAV (PL_defgv); 1245 svf [1] = (SV *)GvAV (PL_defgv);
1031 svf [2] = GvSV (PL_errgv); 1246 svf [2] = GvSV (PL_errgv);
1032 svf [3] = (SV *)PL_defoutgv; 1247 svf [3] = (SV *)PL_defoutgv;
1033 svf [4] = PL_rs; 1248 svf [4] = PL_rs;
… …
1035 svf [6] = (SV *)GvHV (PL_hintgv); 1250 svf [6] = (SV *)GvHV (PL_hintgv);
1036 svf [7] = PL_diehook; 1251 svf [7] = PL_diehook;
1037 svf [8] = PL_warnhook; 1252 svf [8] = PL_warnhook;
1038 assert (9 == sizeof (svf) / sizeof (*svf)); 1253 assert (9 == sizeof (svf) / sizeof (*svf));
1039 1254
1255 SvRV_set (coro_current, old_current);
1256
1040 load_perl (aTHX_ current); 1257 load_perl (aTHX_ current);
1041 } 1258 }
1042 1259
1043 { 1260 {
1044 unsigned int i; 1261 unsigned int i;
… …
1051 SvREFCNT_dec (coro->invoke_cb); 1268 SvREFCNT_dec (coro->invoke_cb);
1052 SvREFCNT_dec (coro->invoke_av); 1269 SvREFCNT_dec (coro->invoke_av);
1053 } 1270 }
1054} 1271}
1055 1272
1056INLINE void 1273ecb_inline void
1057free_coro_mortal (pTHX) 1274free_coro_mortal (pTHX)
1058{ 1275{
1059 if (expect_true (coro_mortal)) 1276 if (ecb_expect_true (coro_mortal))
1060 { 1277 {
1061 SvREFCNT_dec (coro_mortal); 1278 SvREFCNT_dec ((SV *)coro_mortal);
1062 coro_mortal = 0; 1279 coro_mortal = 0;
1063 } 1280 }
1064} 1281}
1065 1282
1066static int 1283static int
… …
1199 1416
1200 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1417 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1201} 1418}
1202 1419
1203/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1420/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1204static void NOINLINE 1421static void ecb_noinline
1205cctx_prepare (pTHX) 1422cctx_prepare (pTHX)
1206{ 1423{
1207 PL_top_env = &PL_start_env; 1424 PL_top_env = &PL_start_env;
1208 1425
1209 if (cctx_current->flags & CC_TRACE) 1426 if (cctx_current->flags & CC_TRACE)
… …
1220 slf_frame.prepare = slf_prepare_set_stacklevel; 1437 slf_frame.prepare = slf_prepare_set_stacklevel;
1221 slf_frame.check = slf_check_set_stacklevel; 1438 slf_frame.check = slf_check_set_stacklevel;
1222} 1439}
1223 1440
1224/* the tail of transfer: execute stuff we can only do after a transfer */ 1441/* the tail of transfer: execute stuff we can only do after a transfer */
1225INLINE void 1442ecb_inline void
1226transfer_tail (pTHX) 1443transfer_tail (pTHX)
1227{ 1444{
1228 free_coro_mortal (aTHX); 1445 free_coro_mortal (aTHX);
1446}
1447
1448/* try to exit the same way perl's main function would do */
1449/* we do not bother resetting the environment or other things *7
1450/* that are not, uhm, essential */
1451/* this obviously also doesn't work when perl is embedded */
1452static void ecb_noinline ecb_cold
1453perlish_exit (pTHX)
1454{
1455 int exitstatus = perl_destruct (PL_curinterp);
1456 perl_free (PL_curinterp);
1457 exit (exitstatus);
1229} 1458}
1230 1459
1231/* 1460/*
1232 * this is a _very_ stripped down perl interpreter ;) 1461 * this is a _very_ stripped down perl interpreter ;)
1233 */ 1462 */
… …
1255 /* somebody or something will hit me for both perl_run and PL_restartop */ 1484 /* somebody or something will hit me for both perl_run and PL_restartop */
1256 PL_restartop = PL_op; 1485 PL_restartop = PL_op;
1257 perl_run (PL_curinterp); 1486 perl_run (PL_curinterp);
1258 /* 1487 /*
1259 * Unfortunately, there is no way to get at the return values of the 1488 * Unfortunately, there is no way to get at the return values of the
1260 * coro body here, as perl_run destroys these 1489 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1490 * runtime errors here, as this is just a random interpreter, not a thread.
1261 */ 1491 */
1262 1492
1263 /* 1493 /*
1264 * If perl-run returns we assume exit() was being called or the coro 1494 * If perl-run returns we assume exit() was being called or the coro
1265 * fell off the end, which seems to be the only valid (non-bug) 1495 * fell off the end, which seems to be the only valid (non-bug)
1266 * reason for perl_run to return. We try to exit by jumping to the 1496 * reason for perl_run to return. We try to mimic whatever perl is normally
1267 * bootstrap-time "top" top_env, as we cannot restore the "main" 1497 * doing in that case. YMMV.
1268 * coroutine as Coro has no such concept.
1269 * This actually isn't valid with the pthread backend, but OSes requiring
1270 * that backend are too broken to do it in a standards-compliant way.
1271 */ 1498 */
1272 PL_top_env = main_top_env; 1499 perlish_exit (aTHX);
1273 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1274 } 1500 }
1275} 1501}
1276 1502
1277static coro_cctx * 1503static coro_cctx *
1278cctx_new () 1504cctx_new (void)
1279{ 1505{
1280 coro_cctx *cctx; 1506 coro_cctx *cctx;
1281 1507
1282 ++cctx_count; 1508 ++cctx_count;
1283 New (0, cctx, 1, coro_cctx); 1509 New (0, cctx, 1, coro_cctx);
… …
1289 return cctx; 1515 return cctx;
1290} 1516}
1291 1517
1292/* create a new cctx only suitable as source */ 1518/* create a new cctx only suitable as source */
1293static coro_cctx * 1519static coro_cctx *
1294cctx_new_empty () 1520cctx_new_empty (void)
1295{ 1521{
1296 coro_cctx *cctx = cctx_new (); 1522 coro_cctx *cctx = cctx_new ();
1297 1523
1298 cctx->sptr = 0; 1524 cctx->sptr = 0;
1299 coro_create (&cctx->cctx, 0, 0, 0, 0); 1525 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1301 return cctx; 1527 return cctx;
1302} 1528}
1303 1529
1304/* create a new cctx suitable as destination/running a perl interpreter */ 1530/* create a new cctx suitable as destination/running a perl interpreter */
1305static coro_cctx * 1531static coro_cctx *
1306cctx_new_run () 1532cctx_new_run (void)
1307{ 1533{
1308 coro_cctx *cctx = cctx_new (); 1534 coro_cctx *cctx = cctx_new ();
1309 void *stack_start; 1535 void *stack_start;
1310 size_t stack_size; 1536 size_t stack_size;
1311 1537
1312#if HAVE_MMAP 1538#if HAVE_MMAP
1313 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1539 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1314 /* mmap supposedly does allocate-on-write for us */ 1540 /* mmap supposedly does allocate-on-write for us */
1315 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1541 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
1316 1542
1317 if (cctx->sptr != (void *)-1) 1543 if (cctx->sptr != (void *)-1)
1318 { 1544 {
1319 #if CORO_STACKGUARD 1545 #if CORO_STACKGUARD
1320 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1546 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1352cctx_destroy (coro_cctx *cctx) 1578cctx_destroy (coro_cctx *cctx)
1353{ 1579{
1354 if (!cctx) 1580 if (!cctx)
1355 return; 1581 return;
1356 1582
1357 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? 1583 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1358 1584
1359 --cctx_count; 1585 --cctx_count;
1360 coro_destroy (&cctx->cctx); 1586 coro_destroy (&cctx->cctx);
1361 1587
1362 /* coro_transfer creates new, empty cctx's */ 1588 /* coro_transfer creates new, empty cctx's */
… …
1381#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1607#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1382 1608
1383static coro_cctx * 1609static coro_cctx *
1384cctx_get (pTHX) 1610cctx_get (pTHX)
1385{ 1611{
1386 while (expect_true (cctx_first)) 1612 while (ecb_expect_true (cctx_first))
1387 { 1613 {
1388 coro_cctx *cctx = cctx_first; 1614 coro_cctx *cctx = cctx_first;
1389 cctx_first = cctx->next; 1615 cctx_first = cctx->next;
1390 --cctx_idle; 1616 --cctx_idle;
1391 1617
1392 if (expect_true (!CCTX_EXPIRED (cctx))) 1618 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1393 return cctx; 1619 return cctx;
1394 1620
1395 cctx_destroy (cctx); 1621 cctx_destroy (cctx);
1396 } 1622 }
1397 1623
… …
1402cctx_put (coro_cctx *cctx) 1628cctx_put (coro_cctx *cctx)
1403{ 1629{
1404 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1630 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1405 1631
1406 /* free another cctx if overlimit */ 1632 /* free another cctx if overlimit */
1407 if (expect_false (cctx_idle >= cctx_max_idle)) 1633 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1408 { 1634 {
1409 coro_cctx *first = cctx_first; 1635 coro_cctx *first = cctx_first;
1410 cctx_first = first->next; 1636 cctx_first = first->next;
1411 --cctx_idle; 1637 --cctx_idle;
1412 1638
… …
1423static void 1649static void
1424transfer_check (pTHX_ struct coro *prev, struct coro *next) 1650transfer_check (pTHX_ struct coro *prev, struct coro *next)
1425{ 1651{
1426 /* TODO: throwing up here is considered harmful */ 1652 /* TODO: throwing up here is considered harmful */
1427 1653
1428 if (expect_true (prev != next)) 1654 if (ecb_expect_true (prev != next))
1429 { 1655 {
1430 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1656 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1431 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1657 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1432 1658
1433 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1659 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1434 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1660 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1435 1661
1436#if !PERL_VERSION_ATLEAST (5,10,0) 1662#if !PERL_VERSION_ATLEAST (5,10,0)
1437 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1663 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1438 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1664 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1439#endif 1665#endif
1440 } 1666 }
1441} 1667}
1442 1668
1443/* always use the TRANSFER macro */ 1669/* always use the TRANSFER macro */
1444static void NOINLINE /* noinline so we have a fixed stackframe */ 1670static void ecb_noinline /* noinline so we have a fixed stackframe */
1445transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1671transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1446{ 1672{
1447 dSTACKLEVEL; 1673 dSTACKLEVEL;
1448 1674
1449 /* sometimes transfer is only called to set idle_sp */ 1675 /* sometimes transfer is only called to set idle_sp */
1450 if (expect_false (!prev)) 1676 if (ecb_expect_false (!prev))
1451 { 1677 {
1452 cctx_current->idle_sp = STACKLEVEL; 1678 cctx_current->idle_sp = STACKLEVEL;
1453 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1679 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1454 } 1680 }
1455 else if (expect_true (prev != next)) 1681 else if (ecb_expect_true (prev != next))
1456 { 1682 {
1457 coro_cctx *cctx_prev; 1683 coro_cctx *cctx_prev;
1458 1684
1459 if (expect_false (prev->flags & CF_NEW)) 1685 if (ecb_expect_false (prev->flags & CF_NEW))
1460 { 1686 {
1461 /* create a new empty/source context */ 1687 /* create a new empty/source context */
1462 prev->flags &= ~CF_NEW; 1688 prev->flags &= ~CF_NEW;
1463 prev->flags |= CF_RUNNING; 1689 prev->flags |= CF_RUNNING;
1464 } 1690 }
… …
1467 next->flags |= CF_RUNNING; 1693 next->flags |= CF_RUNNING;
1468 1694
1469 /* first get rid of the old state */ 1695 /* first get rid of the old state */
1470 save_perl (aTHX_ prev); 1696 save_perl (aTHX_ prev);
1471 1697
1472 if (expect_false (next->flags & CF_NEW)) 1698 if (ecb_expect_false (next->flags & CF_NEW))
1473 { 1699 {
1474 /* need to start coroutine */ 1700 /* need to start coroutine */
1475 next->flags &= ~CF_NEW; 1701 next->flags &= ~CF_NEW;
1476 /* setup coroutine call */ 1702 /* setup coroutine call */
1477 coro_setup (aTHX_ next); 1703 init_perl (aTHX_ next);
1478 } 1704 }
1479 else 1705 else
1480 load_perl (aTHX_ next); 1706 load_perl (aTHX_ next);
1481 1707
1482 /* possibly untie and reuse the cctx */ 1708 /* possibly untie and reuse the cctx */
1483 if (expect_true ( 1709 if (ecb_expect_true (
1484 cctx_current->idle_sp == STACKLEVEL 1710 cctx_current->idle_sp == STACKLEVEL
1485 && !(cctx_current->flags & CC_TRACE) 1711 && !(cctx_current->flags & CC_TRACE)
1486 && !force_cctx 1712 && !force_cctx
1487 )) 1713 ))
1488 { 1714 {
1489 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1715 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1490 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1716 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1491 1717
1492 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1718 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1493 /* without this the next cctx_get might destroy the running cctx while still in use */ 1719 /* without this the next cctx_get might destroy the running cctx while still in use */
1494 if (expect_false (CCTX_EXPIRED (cctx_current))) 1720 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1495 if (expect_true (!next->cctx)) 1721 if (ecb_expect_true (!next->cctx))
1496 next->cctx = cctx_get (aTHX); 1722 next->cctx = cctx_get (aTHX);
1497 1723
1498 cctx_put (cctx_current); 1724 cctx_put (cctx_current);
1499 } 1725 }
1500 else 1726 else
1501 prev->cctx = cctx_current; 1727 prev->cctx = cctx_current;
1502 1728
1503 ++next->usecount; 1729 ++next->usecount;
1504 1730
1505 cctx_prev = cctx_current; 1731 cctx_prev = cctx_current;
1506 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1732 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1507 1733
1508 next->cctx = 0; 1734 next->cctx = 0;
1509 1735
1510 if (expect_false (cctx_prev != cctx_current)) 1736 if (ecb_expect_false (cctx_prev != cctx_current))
1511 { 1737 {
1512 cctx_prev->top_env = PL_top_env; 1738 cctx_prev->top_env = PL_top_env;
1513 PL_top_env = cctx_current->top_env; 1739 PL_top_env = cctx_current->top_env;
1514 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1740 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1515 } 1741 }
… …
1521#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1747#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1522#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1748#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1523 1749
1524/** high level stuff ********************************************************/ 1750/** high level stuff ********************************************************/
1525 1751
1752/* this function is actually Coro, not Coro::State, but we call it from here */
1753/* because it is convenient - but it hasn't been declared yet for that reason */
1526static int 1754static void
1755coro_call_on_destroy (pTHX_ struct coro *coro);
1756
1757static void
1527coro_state_destroy (pTHX_ struct coro *coro) 1758coro_state_destroy (pTHX_ struct coro *coro)
1528{ 1759{
1529 if (coro->flags & CF_DESTROYED) 1760 if (coro->flags & CF_ZOMBIE)
1530 return 0; 1761 return;
1531 1762
1532 if (coro->on_destroy && !PL_dirty)
1533 coro->on_destroy (aTHX_ coro); 1763 slf_destroy (aTHX_ coro);
1534 1764
1535 coro->flags |= CF_DESTROYED; 1765 coro->flags |= CF_ZOMBIE;
1536 1766
1537 if (coro->flags & CF_READY) 1767 if (coro->flags & CF_READY)
1538 { 1768 {
1539 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1769 /* reduce nready, as destroying a ready coro effectively unreadies it */
1540 /* alternative: look through all ready queues and remove the coro */ 1770 /* alternative: look through all ready queues and remove the coro */
1541 --coro_nready; 1771 --coro_nready;
1542 } 1772 }
1543 else 1773 else
1544 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1774 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1775
1776 if (coro->next) coro->next->prev = coro->prev;
1777 if (coro->prev) coro->prev->next = coro->next;
1778 if (coro == coro_first) coro_first = coro->next;
1545 1779
1546 if (coro->mainstack 1780 if (coro->mainstack
1547 && coro->mainstack != main_mainstack 1781 && coro->mainstack != main_mainstack
1548 && coro->slot 1782 && coro->slot
1549 && !PL_dirty) 1783 && !PL_dirty)
1550 coro_destruct_perl (aTHX_ coro); 1784 destroy_perl (aTHX_ coro);
1551 1785
1552 cctx_destroy (coro->cctx); 1786 cctx_destroy (coro->cctx);
1553 SvREFCNT_dec (coro->startcv); 1787 SvREFCNT_dec (coro->startcv);
1554 SvREFCNT_dec (coro->args); 1788 SvREFCNT_dec (coro->args);
1789 SvREFCNT_dec (coro->swap_sv);
1555 SvREFCNT_dec (CORO_THROW); 1790 SvREFCNT_dec (CORO_THROW);
1556 1791
1557 if (coro->next) coro->next->prev = coro->prev; 1792 coro_call_on_destroy (aTHX_ coro);
1558 if (coro->prev) coro->prev->next = coro->next;
1559 if (coro == coro_first) coro_first = coro->next;
1560 1793
1561 return 1; 1794 /* more destruction mayhem in coro_state_free */
1562} 1795}
1563 1796
1564static int 1797static int
1565coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1798coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1566{ 1799{
1567 struct coro *coro = (struct coro *)mg->mg_ptr; 1800 struct coro *coro = (struct coro *)mg->mg_ptr;
1568 mg->mg_ptr = 0; 1801 mg->mg_ptr = 0;
1569 1802
1570 coro->hv = 0;
1571
1572 if (--coro->refcnt < 0)
1573 {
1574 coro_state_destroy (aTHX_ coro); 1803 coro_state_destroy (aTHX_ coro);
1804 SvREFCNT_dec (coro->on_destroy);
1805 SvREFCNT_dec (coro->status);
1806
1575 Safefree (coro); 1807 Safefree (coro);
1576 }
1577 1808
1578 return 0; 1809 return 0;
1579} 1810}
1580 1811
1581static int 1812static int ecb_cold
1582coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1813coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1583{ 1814{
1584 struct coro *coro = (struct coro *)mg->mg_ptr; 1815 /* called when perl clones the current process the slow way (windows process emulation) */
1585 1816 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1586 ++coro->refcnt; 1817 mg->mg_ptr = 0;
1818 mg->mg_virtual = 0;
1587 1819
1588 return 0; 1820 return 0;
1589} 1821}
1590 1822
1591static MGVTBL coro_state_vtbl = { 1823static MGVTBL coro_state_vtbl = {
… …
1616 TRANSFER (ta, 1); 1848 TRANSFER (ta, 1);
1617} 1849}
1618 1850
1619/** Coro ********************************************************************/ 1851/** Coro ********************************************************************/
1620 1852
1621INLINE void 1853ecb_inline void
1622coro_enq (pTHX_ struct coro *coro) 1854coro_enq (pTHX_ struct coro *coro)
1623{ 1855{
1624 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1856 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1625 1857
1626 SvREFCNT_inc_NN (coro->hv); 1858 SvREFCNT_inc_NN (coro->hv);
… …
1628 coro->next_ready = 0; 1860 coro->next_ready = 0;
1629 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1861 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1630 ready [1] = coro; 1862 ready [1] = coro;
1631} 1863}
1632 1864
1633INLINE struct coro * 1865ecb_inline struct coro *
1634coro_deq (pTHX) 1866coro_deq (pTHX)
1635{ 1867{
1636 int prio; 1868 int prio;
1637 1869
1638 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1870 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1648 } 1880 }
1649 1881
1650 return 0; 1882 return 0;
1651} 1883}
1652 1884
1885static void
1886invoke_sv_ready_hook_helper (void)
1887{
1888 dTHX;
1889 dSP;
1890
1891 ENTER;
1892 SAVETMPS;
1893
1894 PUSHMARK (SP);
1895 PUTBACK;
1896 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1897
1898 FREETMPS;
1899 LEAVE;
1900}
1901
1653static int 1902static int
1654api_ready (pTHX_ SV *coro_sv) 1903api_ready (pTHX_ SV *coro_sv)
1655{ 1904{
1656 struct coro *coro;
1657 SV *sv_hook;
1658 void (*xs_hook)(void);
1659
1660 coro = SvSTATE (coro_sv); 1905 struct coro *coro = SvSTATE (coro_sv);
1661 1906
1662 if (coro->flags & CF_READY) 1907 if (coro->flags & CF_READY)
1663 return 0; 1908 return 0;
1664 1909
1665 coro->flags |= CF_READY; 1910 coro->flags |= CF_READY;
1666 1911
1667 sv_hook = coro_nready ? 0 : coro_readyhook;
1668 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1669
1670 coro_enq (aTHX_ coro); 1912 coro_enq (aTHX_ coro);
1671 ++coro_nready;
1672 1913
1673 if (sv_hook) 1914 if (!coro_nready++)
1674 { 1915 if (coroapi.readyhook)
1675 dSP; 1916 coroapi.readyhook ();
1676
1677 ENTER;
1678 SAVETMPS;
1679
1680 PUSHMARK (SP);
1681 PUTBACK;
1682 call_sv (sv_hook, G_VOID | G_DISCARD);
1683
1684 FREETMPS;
1685 LEAVE;
1686 }
1687
1688 if (xs_hook)
1689 xs_hook ();
1690 1917
1691 return 1; 1918 return 1;
1692} 1919}
1693 1920
1694static int 1921static int
… …
1696{ 1923{
1697 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1924 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1698} 1925}
1699 1926
1700/* expects to own a reference to next->hv */ 1927/* expects to own a reference to next->hv */
1701INLINE void 1928ecb_inline void
1702prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1929prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1703{ 1930{
1704 SV *prev_sv = SvRV (coro_current); 1931 SV *prev_sv = SvRV (coro_current);
1705 1932
1706 ta->prev = SvSTATE_hv (prev_sv); 1933 ta->prev = SvSTATE_hv (prev_sv);
… …
1719{ 1946{
1720 for (;;) 1947 for (;;)
1721 { 1948 {
1722 struct coro *next = coro_deq (aTHX); 1949 struct coro *next = coro_deq (aTHX);
1723 1950
1724 if (expect_true (next)) 1951 if (ecb_expect_true (next))
1725 { 1952 {
1726 /* cannot transfer to destroyed coros, skip and look for next */ 1953 /* cannot transfer to destroyed coros, skip and look for next */
1727 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1954 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1728 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1955 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1729 else 1956 else
1730 { 1957 {
1731 next->flags &= ~CF_READY; 1958 next->flags &= ~CF_READY;
1732 --coro_nready; 1959 --coro_nready;
… …
1739 { 1966 {
1740 /* nothing to schedule: call the idle handler */ 1967 /* nothing to schedule: call the idle handler */
1741 if (SvROK (sv_idle) 1968 if (SvROK (sv_idle)
1742 && SvOBJECT (SvRV (sv_idle))) 1969 && SvOBJECT (SvRV (sv_idle)))
1743 { 1970 {
1971 if (SvRV (sv_idle) == SvRV (coro_current))
1972 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1973
1744 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 1974 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1745 api_ready (aTHX_ SvRV (sv_idle)); 1975 api_ready (aTHX_ SvRV (sv_idle));
1746 --coro_nready; 1976 --coro_nready;
1747 } 1977 }
1748 else 1978 else
1749 { 1979 {
1980 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1750 dSP; 1981 dSP;
1751 1982
1752 ENTER; 1983 ENTER;
1753 SAVETMPS; 1984 SAVETMPS;
1754 1985
… …
1761 } 1992 }
1762 } 1993 }
1763 } 1994 }
1764} 1995}
1765 1996
1766INLINE void 1997ecb_inline void
1767prepare_cede (pTHX_ struct coro_transfer_args *ta) 1998prepare_cede (pTHX_ struct coro_transfer_args *ta)
1768{ 1999{
1769 api_ready (aTHX_ coro_current); 2000 api_ready (aTHX_ coro_current);
1770 prepare_schedule (aTHX_ ta); 2001 prepare_schedule (aTHX_ ta);
1771} 2002}
1772 2003
1773INLINE void 2004ecb_inline void
1774prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2005prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1775{ 2006{
1776 SV *prev = SvRV (coro_current); 2007 SV *prev = SvRV (coro_current);
1777 2008
1778 if (coro_nready) 2009 if (coro_nready)
… …
1808{ 2039{
1809 struct coro_transfer_args ta; 2040 struct coro_transfer_args ta;
1810 2041
1811 prepare_cede (aTHX_ &ta); 2042 prepare_cede (aTHX_ &ta);
1812 2043
1813 if (expect_true (ta.prev != ta.next)) 2044 if (ecb_expect_true (ta.prev != ta.next))
1814 { 2045 {
1815 TRANSFER (ta, 1); 2046 TRANSFER (ta, 1);
1816 return 1; 2047 return 1;
1817 } 2048 }
1818 else 2049 else
… …
1861 coro->slot->runops = RUNOPS_DEFAULT; 2092 coro->slot->runops = RUNOPS_DEFAULT;
1862 } 2093 }
1863} 2094}
1864 2095
1865static void 2096static void
2097coro_push_av (pTHX_ AV *av, I32 gimme_v)
2098{
2099 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2100 {
2101 dSP;
2102
2103 if (gimme_v == G_SCALAR)
2104 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2105 else
2106 {
2107 int i;
2108 EXTEND (SP, AvFILLp (av) + 1);
2109
2110 for (i = 0; i <= AvFILLp (av); ++i)
2111 PUSHs (AvARRAY (av)[i]);
2112 }
2113
2114 PUTBACK;
2115 }
2116}
2117
2118static void
2119coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2120{
2121 if (!coro->on_destroy)
2122 coro->on_destroy = newAV ();
2123
2124 av_push (coro->on_destroy, cb);
2125}
2126
2127static void
2128slf_destroy_join (pTHX_ struct CoroSLF *frame)
2129{
2130 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2131}
2132
2133static int
2134slf_check_join (pTHX_ struct CoroSLF *frame)
2135{
2136 struct coro *coro = (struct coro *)frame->data;
2137
2138 if (!coro->status)
2139 return 1;
2140
2141 frame->destroy = 0;
2142
2143 coro_push_av (aTHX_ coro->status, GIMME_V);
2144
2145 SvREFCNT_dec ((SV *)coro->hv);
2146
2147 return 0;
2148}
2149
2150static void
2151slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2152{
2153 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2154
2155 if (items > 1)
2156 croak ("join called with too many arguments");
2157
2158 if (coro->status)
2159 frame->prepare = prepare_nop;
2160 else
2161 {
2162 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2163 frame->prepare = prepare_schedule;
2164 }
2165
2166 frame->check = slf_check_join;
2167 frame->destroy = slf_destroy_join;
2168 frame->data = (void *)coro;
2169 SvREFCNT_inc (coro->hv);
2170}
2171
2172static void
1866coro_call_on_destroy (pTHX_ struct coro *coro) 2173coro_call_on_destroy (pTHX_ struct coro *coro)
1867{ 2174{
1868 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2175 AV *od = coro->on_destroy;
1869 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1870 2176
1871 if (on_destroyp) 2177 if (!od)
1872 { 2178 return;
1873 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1874 2179
1875 while (AvFILLp (on_destroy) >= 0) 2180 while (AvFILLp (od) >= 0)
2181 {
2182 SV *cb = sv_2mortal (av_pop (od));
2183
2184 /* coro hv's (and only hv's at the moment) are supported as well */
2185 if (SvSTATEhv_p (aTHX_ cb))
2186 api_ready (aTHX_ cb);
2187 else
1876 { 2188 {
1877 dSP; /* don't disturb outer sp */ 2189 dSP; /* don't disturb outer sp */
1878 SV *cb = av_pop (on_destroy);
1879
1880 PUSHMARK (SP); 2190 PUSHMARK (SP);
1881 2191
1882 if (statusp) 2192 if (coro->status)
1883 { 2193 {
1884 int i; 2194 PUTBACK;
1885 AV *status = (AV *)SvRV (*statusp); 2195 coro_push_av (aTHX_ coro->status, G_ARRAY);
1886 EXTEND (SP, AvFILLp (status) + 1); 2196 SPAGAIN;
1887
1888 for (i = 0; i <= AvFILLp (status); ++i)
1889 PUSHs (AvARRAY (status)[i]);
1890 } 2197 }
1891 2198
1892 PUTBACK; 2199 PUTBACK;
1893 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2200 call_sv (cb, G_VOID | G_DISCARD);
1894 } 2201 }
1895 } 2202 }
1896} 2203}
1897 2204
1898static void 2205static void
1899slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2206coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1900{ 2207{
2208 AV *av;
2209
2210 if (coro->status)
2211 {
2212 av = coro->status;
2213 av_clear (av);
2214 }
2215 else
2216 av = coro->status = newAV ();
2217
2218 /* items are actually not so common, so optimise for this case */
2219 if (items)
2220 {
1901 int i; 2221 int i;
1902 HV *hv = (HV *)SvRV (coro_current);
1903 AV *av = newAV ();
1904 2222
1905 av_extend (av, items - 1); 2223 av_extend (av, items - 1);
2224
1906 for (i = 0; i < items; ++i) 2225 for (i = 0; i < items; ++i)
1907 av_push (av, SvREFCNT_inc_NN (arg [i])); 2226 av_push (av, SvREFCNT_inc_NN (arg [i]));
2227 }
2228}
1908 2229
1909 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2230static void
1910 2231slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2232{
1911 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2233 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1912 api_ready (aTHX_ sv_manager); 2234 api_ready (aTHX_ sv_manager);
1913 2235
1914 frame->prepare = prepare_schedule; 2236 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_repeat; 2237 frame->check = slf_check_repeat;
1916 2238
1917 /* as a minor optimisation, we could unwind all stacks here */ 2239 /* as a minor optimisation, we could unwind all stacks here */
1918 /* but that puts extra pressure on pp_slf, and is not worth much */ 2240 /* but that puts extra pressure on pp_slf, and is not worth much */
1919 /*coro_unwind_stacks (aTHX);*/ 2241 /*coro_unwind_stacks (aTHX);*/
2242}
2243
2244static void
2245slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2246{
2247 HV *coro_hv = (HV *)SvRV (coro_current);
2248
2249 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2250 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2251}
2252
2253static void
2254slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2255{
2256 HV *coro_hv;
2257 struct coro *coro;
2258
2259 if (items <= 0)
2260 croak ("Coro::cancel called without coro object,");
2261
2262 coro = SvSTATE (arg [0]);
2263 coro_hv = coro->hv;
2264
2265 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2266
2267 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2268 {
2269 /* coro currently busy cancelling something, so just notify it */
2270 coro->slf_frame.data = (void *)coro;
2271
2272 frame->prepare = prepare_nop;
2273 frame->check = slf_check_nop;
2274 }
2275 else if (coro_hv == (HV *)SvRV (coro_current))
2276 {
2277 /* cancelling the current coro is allowed, and equals terminate */
2278 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2279 }
2280 else
2281 {
2282 struct coro *self = SvSTATE_current;
2283
2284 /* otherwise we cancel directly, purely for speed reasons
2285 * unfortunately, this requires some magic trickery, as
2286 * somebody else could cancel us, so we have to fight the cancellation.
2287 * this is ugly, and hopefully fully worth the extra speed.
2288 * besides, I can't get the slow-but-safe version working...
2289 */
2290 slf_frame.data = 0;
2291 self->flags |= CF_NOCANCEL;
2292 coro_state_destroy (aTHX_ coro);
2293 self->flags &= ~CF_NOCANCEL;
2294
2295 if (slf_frame.data)
2296 {
2297 /* while we were busy we have been cancelled, so terminate */
2298 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2299 }
2300 else
2301 {
2302 frame->prepare = prepare_nop;
2303 frame->check = slf_check_nop;
2304 }
2305 }
2306}
2307
2308static int
2309slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2310{
2311 frame->prepare = 0;
2312 coro_unwind_stacks (aTHX);
2313
2314 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2315
2316 return 1;
2317}
2318
2319static int
2320safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2321{
2322 if (coro->cctx)
2323 croak ("coro inside C callback, unable to cancel at this time, caught");
2324
2325 if (coro->flags & CF_NEW)
2326 {
2327 coro_set_status (aTHX_ coro, arg, items);
2328 coro_state_destroy (aTHX_ coro);
2329 }
2330 else
2331 {
2332 if (!coro->slf_frame.prepare)
2333 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2334
2335 slf_destroy (aTHX_ coro);
2336
2337 coro_set_status (aTHX_ coro, arg, items);
2338 coro->slf_frame.prepare = prepare_nop;
2339 coro->slf_frame.check = slf_check_safe_cancel;
2340
2341 api_ready (aTHX_ (SV *)coro->hv);
2342 }
2343
2344 return 1;
1920} 2345}
1921 2346
1922/*****************************************************************************/ 2347/*****************************************************************************/
1923/* async pool handler */ 2348/* async pool handler */
1924 2349
… …
1955slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2380slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1956{ 2381{
1957 HV *hv = (HV *)SvRV (coro_current); 2382 HV *hv = (HV *)SvRV (coro_current);
1958 struct coro *coro = SvSTATE_hv ((SV *)hv); 2383 struct coro *coro = SvSTATE_hv ((SV *)hv);
1959 2384
1960 if (expect_true (coro->saved_deffh)) 2385 if (ecb_expect_true (coro->saved_deffh))
1961 { 2386 {
1962 /* subsequent iteration */ 2387 /* subsequent iteration */
1963 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2388 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1964 coro->saved_deffh = 0; 2389 coro->saved_deffh = 0;
1965 2390
1966 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2391 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1967 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2392 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1968 { 2393 {
1969 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2394 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1970 coro->invoke_av = newAV (); 2395 return;
1971
1972 frame->prepare = prepare_nop;
1973 } 2396 }
1974 else 2397 else
1975 { 2398 {
1976 av_clear (GvAV (PL_defgv)); 2399 av_clear (GvAV (PL_defgv));
1977 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2400 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
2027 2450
2028static int 2451static int
2029slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2452slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2030{ 2453{
2031 SV *data = (SV *)frame->data; 2454 SV *data = (SV *)frame->data;
2032 2455
2033 if (CORO_THROW) 2456 if (CORO_THROW)
2034 return 0; 2457 return 0;
2035 2458
2036 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2459 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2037 return 1; 2460 return 1;
… …
2073 cb = sv_2mortal (coro->rouse_cb); 2496 cb = sv_2mortal (coro->rouse_cb);
2074 coro->rouse_cb = 0; 2497 coro->rouse_cb = 0;
2075 } 2498 }
2076 2499
2077 if (!SvROK (cb) 2500 if (!SvROK (cb)
2078 || SvTYPE (SvRV (cb)) != SVt_PVCV 2501 || SvTYPE (SvRV (cb)) != SVt_PVCV
2079 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2502 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2080 croak ("Coro::rouse_wait called with illegal callback argument,"); 2503 croak ("Coro::rouse_wait called with illegal callback argument,");
2081 2504
2082 { 2505 {
2083 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2506 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2200static void 2623static void
2201slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2624slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{ 2625{
2203 frame->prepare = prepare_cede_notself; 2626 frame->prepare = prepare_cede_notself;
2204 frame->check = slf_check_nop; 2627 frame->check = slf_check_nop;
2628}
2629
2630/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2631static void
2632slf_destroy (pTHX_ struct coro *coro)
2633{
2634 /* this callback is reserved for slf functions needing to do cleanup */
2635 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2636 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2637
2638 /*
2639 * The on_destroy above most likely is from an SLF call.
2640 * Since by definition the SLF call will not finish when we destroy
2641 * the coro, we will have to force-finish it here, otherwise
2642 * cleanup functions cannot call SLF functions.
2643 */
2644 coro->slf_frame.prepare = 0;
2205} 2645}
2206 2646
2207/* 2647/*
2208 * these not obviously related functions are all rolled into one 2648 * these not obviously related functions are all rolled into one
2209 * function to increase chances that they all will call transfer with the same 2649 * function to increase chances that they all will call transfer with the same
… …
2216 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2656 I32 checkmark; /* mark SP to see how many elements check has pushed */
2217 2657
2218 /* set up the slf frame, unless it has already been set-up */ 2658 /* set up the slf frame, unless it has already been set-up */
2219 /* the latter happens when a new coro has been started */ 2659 /* the latter happens when a new coro has been started */
2220 /* or when a new cctx was attached to an existing coroutine */ 2660 /* or when a new cctx was attached to an existing coroutine */
2221 if (expect_true (!slf_frame.prepare)) 2661 if (ecb_expect_true (!slf_frame.prepare))
2222 { 2662 {
2223 /* first iteration */ 2663 /* first iteration */
2224 dSP; 2664 dSP;
2225 SV **arg = PL_stack_base + TOPMARK + 1; 2665 SV **arg = PL_stack_base + TOPMARK + 1;
2226 int items = SP - arg; /* args without function object */ 2666 int items = SP - arg; /* args without function object */
… …
2267 while (slf_frame.check (aTHX_ &slf_frame)); 2707 while (slf_frame.check (aTHX_ &slf_frame));
2268 2708
2269 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2709 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2270 2710
2271 /* exception handling */ 2711 /* exception handling */
2272 if (expect_false (CORO_THROW)) 2712 if (ecb_expect_false (CORO_THROW))
2273 { 2713 {
2274 SV *exception = sv_2mortal (CORO_THROW); 2714 SV *exception = sv_2mortal (CORO_THROW);
2275 2715
2276 CORO_THROW = 0; 2716 CORO_THROW = 0;
2277 sv_setsv (ERRSV, exception); 2717 sv_setsv (ERRSV, exception);
2278 croak (0); 2718 croak (0);
2279 } 2719 }
2280 2720
2281 /* return value handling - mostly like entersub */ 2721 /* return value handling - mostly like entersub */
2282 /* make sure we put something on the stack in scalar context */ 2722 /* make sure we put something on the stack in scalar context */
2283 if (GIMME_V == G_SCALAR) 2723 if (GIMME_V == G_SCALAR
2724 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2284 { 2725 {
2285 dSP; 2726 dSP;
2286 SV **bot = PL_stack_base + checkmark; 2727 SV **bot = PL_stack_base + checkmark;
2287 2728
2288 if (sp == bot) /* too few, push undef */ 2729 if (sp == bot) /* too few, push undef */
2289 bot [1] = &PL_sv_undef; 2730 bot [1] = &PL_sv_undef;
2290 else if (sp != bot + 1) /* too many, take last one */ 2731 else /* too many, take last one */
2291 bot [1] = *sp; 2732 bot [1] = *sp;
2292 2733
2293 SP = bot + 1; 2734 SP = bot + 1;
2294 2735
2295 PUTBACK; 2736 PUTBACK;
… …
2328 if (PL_op->op_flags & OPf_STACKED) 2769 if (PL_op->op_flags & OPf_STACKED)
2329 { 2770 {
2330 if (items > slf_arga) 2771 if (items > slf_arga)
2331 { 2772 {
2332 slf_arga = items; 2773 slf_arga = items;
2333 free (slf_argv); 2774 Safefree (slf_argv);
2334 slf_argv = malloc (slf_arga * sizeof (SV *)); 2775 New (0, slf_argv, slf_arga, SV *);
2335 } 2776 }
2336 2777
2337 slf_argc = items; 2778 slf_argc = items;
2338 2779
2339 for (i = 0; i < items; ++i) 2780 for (i = 0; i < items; ++i)
… …
2402{ 2843{
2403 PerlIOBuf base; 2844 PerlIOBuf base;
2404 NV next, every; 2845 NV next, every;
2405} PerlIOCede; 2846} PerlIOCede;
2406 2847
2407static IV 2848static IV ecb_cold
2408PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2849PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2409{ 2850{
2410 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2851 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2411 2852
2412 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2853 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2413 self->next = nvtime () + self->every; 2854 self->next = nvtime () + self->every;
2414 2855
2415 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2856 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2416} 2857}
2417 2858
2418static SV * 2859static SV * ecb_cold
2419PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2860PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2420{ 2861{
2421 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2862 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2422 2863
2423 return newSVnv (self->every); 2864 return newSVnv (self->every);
… …
2535 SvREFCNT_dec (cb); 2976 SvREFCNT_dec (cb);
2536 } 2977 }
2537} 2978}
2538 2979
2539static void 2980static void
2540coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2981coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2541{ 2982{
2542 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2983 /* call $sem->adjust (0) to possibly wake up some other waiters */
2543 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2984 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2544} 2985}
2545 2986
2546static int 2987static int
2547slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2988slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2548{ 2989{
2549 AV *av = (AV *)frame->data; 2990 AV *av = (AV *)frame->data;
2550 SV *count_sv = AvARRAY (av)[0]; 2991 SV *count_sv = AvARRAY (av)[0];
2992 SV *coro_hv = SvRV (coro_current);
2551 2993
2552 /* if we are about to throw, don't actually acquire the lock, just throw */ 2994 /* if we are about to throw, don't actually acquire the lock, just throw */
2553 if (CORO_THROW) 2995 if (CORO_THROW)
2554 return 0; 2996 return 0;
2555 else if (SvIVX (count_sv) > 0) 2997 else if (SvIVX (count_sv) > 0)
2556 { 2998 {
2557 SvSTATE_current->on_destroy = 0; 2999 frame->destroy = 0;
2558 3000
2559 if (acquire) 3001 if (acquire)
2560 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3002 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2561 else 3003 else
2562 coro_semaphore_adjust (aTHX_ av, 0); 3004 coro_semaphore_adjust (aTHX_ av, 0);
… …
2567 { 3009 {
2568 int i; 3010 int i;
2569 /* if we were woken up but can't down, we look through the whole */ 3011 /* if we were woken up but can't down, we look through the whole */
2570 /* waiters list and only add us if we aren't in there already */ 3012 /* waiters list and only add us if we aren't in there already */
2571 /* this avoids some degenerate memory usage cases */ 3013 /* this avoids some degenerate memory usage cases */
2572 3014 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2573 for (i = 1; i <= AvFILLp (av); ++i)
2574 if (AvARRAY (av)[i] == SvRV (coro_current)) 3015 if (AvARRAY (av)[i] == coro_hv)
2575 return 1; 3016 return 1;
2576 3017
2577 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3018 av_push (av, SvREFCNT_inc (coro_hv));
2578 return 1; 3019 return 1;
2579 } 3020 }
2580} 3021}
2581 3022
2582static int 3023static int
… …
2605 { 3046 {
2606 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3047 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2607 3048
2608 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3049 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2609 frame->prepare = prepare_schedule; 3050 frame->prepare = prepare_schedule;
2610
2611 /* to avoid race conditions when a woken-up coro gets terminated */ 3051 /* to avoid race conditions when a woken-up coro gets terminated */
2612 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3052 /* we arrange for a temporary on_destroy that calls adjust (0) */
2613 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3053 frame->destroy = coro_semaphore_destroy;
2614 } 3054 }
2615} 3055}
2616 3056
2617static void 3057static void
2618slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3058slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2700 { 3140 {
2701 SV *cb_cv = s_get_cv_croak (arg [1]); 3141 SV *cb_cv = s_get_cv_croak (arg [1]);
2702 av_push (av, SvREFCNT_inc_NN (cb_cv)); 3142 av_push (av, SvREFCNT_inc_NN (cb_cv));
2703 3143
2704 if (SvIVX (AvARRAY (av)[0])) 3144 if (SvIVX (AvARRAY (av)[0]))
2705 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ 3145 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2706 3146
2707 frame->prepare = prepare_nop; 3147 frame->prepare = prepare_nop;
2708 frame->check = slf_check_nop; 3148 frame->check = slf_check_nop;
2709 } 3149 }
2710 else if (SvIVX (AvARRAY (av)[0])) 3150 else if (SvIVX (AvARRAY (av)[0]))
… …
2836 dSP; 3276 dSP;
2837 3277
2838 static SV *prio_cv; 3278 static SV *prio_cv;
2839 static SV *prio_sv; 3279 static SV *prio_sv;
2840 3280
2841 if (expect_false (!prio_cv)) 3281 if (ecb_expect_false (!prio_cv))
2842 { 3282 {
2843 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3283 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2844 prio_sv = newSViv (0); 3284 prio_sv = newSViv (0);
2845 } 3285 }
2846 3286
… …
2872 /* now call the AIO function - we assume our request is uncancelable */ 3312 /* now call the AIO function - we assume our request is uncancelable */
2873 PUTBACK; 3313 PUTBACK;
2874 call_sv ((SV *)req, G_VOID | G_DISCARD); 3314 call_sv ((SV *)req, G_VOID | G_DISCARD);
2875 } 3315 }
2876 3316
2877 /* now that the requets is going, we loop toll we have a result */ 3317 /* now that the request is going, we loop till we have a result */
2878 frame->data = (void *)state; 3318 frame->data = (void *)state;
2879 frame->prepare = prepare_schedule; 3319 frame->prepare = prepare_schedule;
2880 frame->check = slf_check_aio_req; 3320 frame->check = slf_check_aio_req;
2881} 3321}
2882 3322
… …
2892 3332
2893/*****************************************************************************/ 3333/*****************************************************************************/
2894 3334
2895#if CORO_CLONE 3335#if CORO_CLONE
2896# include "clone.c" 3336# include "clone.c"
3337#endif
3338
3339/*****************************************************************************/
3340
3341static SV *
3342coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3343{
3344 SV *coro_sv;
3345 struct coro *coro;
3346 MAGIC *mg;
3347 HV *hv;
3348 SV *cb;
3349 int i;
3350
3351 if (argc > 0)
3352 {
3353 cb = s_get_cv_croak (argv [0]);
3354
3355 if (!is_coro)
3356 {
3357 if (CvISXSUB (cb))
3358 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3359
3360 if (!CvROOT (cb))
3361 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3362 }
3363 }
3364
3365 Newz (0, coro, 1, struct coro);
3366 coro->args = newAV ();
3367 coro->flags = CF_NEW;
3368
3369 if (coro_first) coro_first->prev = coro;
3370 coro->next = coro_first;
3371 coro_first = coro;
3372
3373 coro->hv = hv = newHV ();
3374 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3375 mg->mg_flags |= MGf_DUP;
3376 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3377
3378 if (argc > 0)
3379 {
3380 av_extend (coro->args, argc + is_coro - 1);
3381
3382 if (is_coro)
3383 {
3384 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3385 cb = (SV *)cv_coro_run;
3386 }
3387
3388 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3389
3390 for (i = 1; i < argc; i++)
3391 av_push (coro->args, newSVsv (argv [i]));
3392 }
3393
3394 return coro_sv;
3395}
3396
3397#ifndef __cplusplus
3398ecb_cold XS(boot_Coro__State);
3399#endif
3400
3401#if CORO_JIT
3402
3403static void ecb_noinline ecb_cold
3404pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3405{
3406 dSP;
3407 AV *av = newAV ();
3408
3409 av_store (av, 3, newSVuv (d));
3410 av_store (av, 2, newSVuv (c));
3411 av_store (av, 1, newSVuv (b));
3412 av_store (av, 0, newSVuv (a));
3413
3414 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3415
3416 PUTBACK;
3417}
3418
3419static void ecb_noinline ecb_cold
3420jit_init (pTHX)
3421{
3422 dSP;
3423 SV *load, *save;
3424 char *map_base;
3425 char *load_ptr, *save_ptr;
3426 STRLEN load_len, save_len, map_len;
3427 int count;
3428
3429 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3430
3431 PUSHMARK (SP);
3432 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3433 #include "state.h"
3434 count = call_pv ("Coro::State::_jit", G_ARRAY);
3435 SPAGAIN;
3436
3437 save = POPs; save_ptr = SvPVbyte (save, save_len);
3438 load = POPs; load_ptr = SvPVbyte (load, load_len);
3439
3440 map_len = load_len + save_len + 16;
3441
3442 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3443
3444 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3445
3446 load_perl_slots = (load_save_perl_slots_type)map_base;
3447 memcpy (map_base, load_ptr, load_len);
3448
3449 map_base += (load_len + 15) & ~15;
3450
3451 save_perl_slots = (load_save_perl_slots_type)map_base;
3452 memcpy (map_base, save_ptr, save_len);
3453
3454 /* we are good citizens and try to make the page read-only, so the evil evil */
3455 /* hackers might have it a bit more difficult */
3456 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3457
3458 PUTBACK;
3459 eval_pv ("undef &Coro::State::_jit", 1);
3460}
3461
2897#endif 3462#endif
2898 3463
2899MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3464MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2900 3465
2901PROTOTYPES: DISABLE 3466PROTOTYPES: DISABLE
… …
2906# if CORO_PTHREAD 3471# if CORO_PTHREAD
2907 coro_thx = PERL_GET_CONTEXT; 3472 coro_thx = PERL_GET_CONTEXT;
2908# endif 3473# endif
2909#endif 3474#endif
2910 BOOT_PAGESIZE; 3475 BOOT_PAGESIZE;
3476
3477 /* perl defines these to check for existance first, but why it doesn't */
3478 /* just create them one at init time is not clear to me, except for */
3479 /* programs trying to delete them, but... */
3480 /* anyway, we declare this as invalid and make sure they are initialised here */
3481 DEFSV;
3482 ERRSV;
2911 3483
2912 cctx_current = cctx_new_empty (); 3484 cctx_current = cctx_new_empty ();
2913 3485
2914 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3486 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2915 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3487 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
2955 coroapi.prepare_nop = prepare_nop; 3527 coroapi.prepare_nop = prepare_nop;
2956 coroapi.prepare_schedule = prepare_schedule; 3528 coroapi.prepare_schedule = prepare_schedule;
2957 coroapi.prepare_cede = prepare_cede; 3529 coroapi.prepare_cede = prepare_cede;
2958 coroapi.prepare_cede_notself = prepare_cede_notself; 3530 coroapi.prepare_cede_notself = prepare_cede_notself;
2959 3531
2960 { 3532 time_init (aTHX);
2961 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2962
2963 if (!svp) croak ("Time::HiRes is required");
2964 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2965
2966 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2967
2968 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2969 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2970 }
2971 3533
2972 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3534 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3535#if CORO_JIT
3536 PUTBACK;
3537 jit_init (aTHX);
3538 SPAGAIN;
3539#endif
2973} 3540}
2974 3541
2975SV * 3542SV *
2976new (char *klass, ...) 3543new (SV *klass, ...)
2977 ALIAS: 3544 ALIAS:
2978 Coro::new = 1 3545 Coro::new = 1
2979 CODE: 3546 CODE:
2980{ 3547 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2981 struct coro *coro; 3548 OUTPUT:
2982 MAGIC *mg;
2983 HV *hv;
2984 SV *cb;
2985 int i;
2986
2987 if (items > 1)
2988 {
2989 cb = s_get_cv_croak (ST (1));
2990
2991 if (!ix)
2992 {
2993 if (CvISXSUB (cb))
2994 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2995
2996 if (!CvROOT (cb))
2997 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2998 }
2999 }
3000
3001 Newz (0, coro, 1, struct coro);
3002 coro->args = newAV ();
3003 coro->flags = CF_NEW;
3004
3005 if (coro_first) coro_first->prev = coro;
3006 coro->next = coro_first;
3007 coro_first = coro;
3008
3009 coro->hv = hv = newHV ();
3010 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3011 mg->mg_flags |= MGf_DUP;
3012 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
3013
3014 if (items > 1)
3015 {
3016 av_extend (coro->args, items - 1 + ix - 1);
3017
3018 if (ix)
3019 {
3020 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3021 cb = (SV *)cv_coro_run;
3022 }
3023
3024 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3025
3026 for (i = 2; i < items; i++)
3027 av_push (coro->args, newSVsv (ST (i)));
3028 }
3029}
3030 OUTPUT:
3031 RETVAL 3549 RETVAL
3032 3550
3033void 3551void
3034transfer (...) 3552transfer (...)
3035 PROTOTYPE: $$ 3553 PROTOTYPE: $$
3036 CODE: 3554 CODE:
3037 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3555 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3038
3039bool
3040_destroy (SV *coro_sv)
3041 CODE:
3042 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3043 OUTPUT:
3044 RETVAL
3045 3556
3046void 3557void
3047_exit (int code) 3558_exit (int code)
3048 PROTOTYPE: $ 3559 PROTOTYPE: $
3049 CODE: 3560 CODE:
… …
3110void 3621void
3111list () 3622list ()
3112 PROTOTYPE: 3623 PROTOTYPE:
3113 PPCODE: 3624 PPCODE:
3114{ 3625{
3115 struct coro *coro; 3626 struct coro *coro;
3116 for (coro = coro_first; coro; coro = coro->next) 3627 for (coro = coro_first; coro; coro = coro->next)
3117 if (coro->hv) 3628 if (coro->hv)
3118 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3629 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3119} 3630}
3120 3631
… …
3125 CODE: 3636 CODE:
3126{ 3637{
3127 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3638 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3128 { 3639 {
3129 struct coro *current = SvSTATE_current; 3640 struct coro *current = SvSTATE_current;
3641 struct CoroSLF slf_save;
3130 3642
3131 if (current != coro) 3643 if (current != coro)
3132 { 3644 {
3133 PUTBACK; 3645 PUTBACK;
3134 save_perl (aTHX_ current); 3646 save_perl (aTHX_ current);
3135 load_perl (aTHX_ coro); 3647 load_perl (aTHX_ coro);
3648 /* the coro is most likely in an active SLF call.
3649 * while not strictly required (the code we execute is
3650 * not allowed to call any SLF functions), it's cleaner
3651 * to reinitialise the slf_frame and restore it later.
3652 * This might one day allow us to actually do SLF calls
3653 * from code executed here.
3654 */
3655 slf_save = slf_frame;
3656 slf_frame.prepare = 0;
3136 SPAGAIN; 3657 SPAGAIN;
3137 } 3658 }
3138 3659
3139 PUSHSTACK; 3660 PUSHSTACK;
3140 3661
… …
3150 SPAGAIN; 3671 SPAGAIN;
3151 3672
3152 if (current != coro) 3673 if (current != coro)
3153 { 3674 {
3154 PUTBACK; 3675 PUTBACK;
3676 slf_frame = slf_save;
3155 save_perl (aTHX_ coro); 3677 save_perl (aTHX_ coro);
3156 load_perl (aTHX_ current); 3678 load_perl (aTHX_ current);
3157 SPAGAIN; 3679 SPAGAIN;
3158 } 3680 }
3159 } 3681 }
… …
3164 PROTOTYPE: $ 3686 PROTOTYPE: $
3165 ALIAS: 3687 ALIAS:
3166 is_ready = CF_READY 3688 is_ready = CF_READY
3167 is_running = CF_RUNNING 3689 is_running = CF_RUNNING
3168 is_new = CF_NEW 3690 is_new = CF_NEW
3169 is_destroyed = CF_DESTROYED 3691 is_destroyed = CF_ZOMBIE
3692 is_zombie = CF_ZOMBIE
3170 is_suspended = CF_SUSPENDED 3693 is_suspended = CF_SUSPENDED
3171 CODE: 3694 CODE:
3172 RETVAL = boolSV (coro->flags & ix); 3695 RETVAL = boolSV (coro->flags & ix);
3173 OUTPUT: 3696 OUTPUT:
3174 RETVAL 3697 RETVAL
3175 3698
3176void 3699void
3177throw (Coro::State self, SV *throw = &PL_sv_undef) 3700throw (SV *self, SV *exception = &PL_sv_undef)
3178 PROTOTYPE: $;$ 3701 PROTOTYPE: $;$
3179 CODE: 3702 CODE:
3180{ 3703{
3704 struct coro *coro = SvSTATE (self);
3181 struct coro *current = SvSTATE_current; 3705 struct coro *current = SvSTATE_current;
3182 SV **throwp = self == current ? &CORO_THROW : &self->except; 3706 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3183 SvREFCNT_dec (*throwp); 3707 SvREFCNT_dec (*exceptionp);
3184 SvGETMAGIC (throw); 3708 SvGETMAGIC (exception);
3185 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3709 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3710
3711 api_ready (aTHX_ self);
3186} 3712}
3187 3713
3188void 3714void
3189api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3715api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3190 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
… …
3245 3771
3246void 3772void
3247cancel (Coro::State self) 3773cancel (Coro::State self)
3248 CODE: 3774 CODE:
3249 coro_state_destroy (aTHX_ self); 3775 coro_state_destroy (aTHX_ self);
3250 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3251
3252 3776
3253SV * 3777SV *
3254enable_times (int enabled = enable_times) 3778enable_times (int enabled = enable_times)
3255 CODE: 3779 CODE:
3256{ 3780{
… …
3269 3793
3270void 3794void
3271times (Coro::State self) 3795times (Coro::State self)
3272 PPCODE: 3796 PPCODE:
3273{ 3797{
3274 struct coro *current = SvSTATE (coro_current); 3798 struct coro *current = SvSTATE (coro_current);
3275 3799
3276 if (expect_false (current == self)) 3800 if (ecb_expect_false (current == self))
3277 { 3801 {
3278 coro_times_update (); 3802 coro_times_update ();
3279 coro_times_add (SvSTATE (coro_current)); 3803 coro_times_add (SvSTATE (coro_current));
3280 } 3804 }
3281 3805
3282 EXTEND (SP, 2); 3806 EXTEND (SP, 2);
3283 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3807 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3284 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3808 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3285 3809
3286 if (expect_false (current == self)) 3810 if (ecb_expect_false (current == self))
3287 coro_times_sub (SvSTATE (coro_current)); 3811 coro_times_sub (SvSTATE (coro_current));
3288} 3812}
3813
3814void
3815swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3816 CODE:
3817{
3818 struct coro *current = SvSTATE_current;
3819
3820 if (current == coro)
3821 SWAP_SVS (current);
3822
3823 if (!coro->swap_sv)
3824 coro->swap_sv = newAV ();
3825
3826 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3827 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3828
3829 if (current == coro)
3830 SWAP_SVS (current);
3831}
3832
3289 3833
3290MODULE = Coro::State PACKAGE = Coro 3834MODULE = Coro::State PACKAGE = Coro
3291 3835
3292BOOT: 3836BOOT:
3293{ 3837{
3294 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3838 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3295 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3839 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3296 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 3840 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3297 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3298 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3841 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3299 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3842 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3300 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3843 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3301 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3844 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3302 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 3845 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3303 3846
3304 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3847 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3305 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3848 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3306 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3849 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3307 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3850 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3308 3851
3309 coro_stash = gv_stashpv ("Coro", TRUE); 3852 coro_stash = gv_stashpv ("Coro", TRUE);
3310 3853
3311 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 3854 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3312 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 3855 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
… …
3331 sv_setiv (sv, (IV)&coroapi); 3874 sv_setiv (sv, (IV)&coroapi);
3332 SvREADONLY_on (sv); 3875 SvREADONLY_on (sv);
3333 } 3876 }
3334} 3877}
3335 3878
3879SV *
3880async (...)
3881 PROTOTYPE: &@
3882 CODE:
3883 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3884 api_ready (aTHX_ RETVAL);
3885 OUTPUT:
3886 RETVAL
3887
3888void
3889_destroy (Coro::State coro)
3890 CODE:
3891 /* used by the manager thread */
3892 coro_state_destroy (aTHX_ coro);
3893
3894void
3895on_destroy (Coro::State coro, SV *cb)
3896 CODE:
3897 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3898
3899void
3900join (...)
3901 CODE:
3902 CORO_EXECUTE_SLF_XS (slf_init_join);
3903
3336void 3904void
3337terminate (...) 3905terminate (...)
3338 CODE: 3906 CODE:
3339 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3907 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3908
3909void
3910cancel (...)
3911 CODE:
3912 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3913
3914int
3915safe_cancel (Coro::State self, ...)
3916 C_ARGS: aTHX_ self, &ST (1), items - 1
3340 3917
3341void 3918void
3342schedule (...) 3919schedule (...)
3343 CODE: 3920 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3921 CORO_EXECUTE_SLF_XS (slf_init_schedule);
… …
3374_set_readyhook (SV *hook) 3951_set_readyhook (SV *hook)
3375 PROTOTYPE: $ 3952 PROTOTYPE: $
3376 CODE: 3953 CODE:
3377 SvREFCNT_dec (coro_readyhook); 3954 SvREFCNT_dec (coro_readyhook);
3378 SvGETMAGIC (hook); 3955 SvGETMAGIC (hook);
3956 if (SvOK (hook))
3957 {
3379 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3958 coro_readyhook = newSVsv (hook);
3959 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3960 }
3961 else
3962 {
3963 coro_readyhook = 0;
3964 CORO_READYHOOK = 0;
3965 }
3380 3966
3381int 3967int
3382prio (Coro::State coro, int newprio = 0) 3968prio (Coro::State coro, int newprio = 0)
3383 PROTOTYPE: $;$ 3969 PROTOTYPE: $;$
3384 ALIAS: 3970 ALIAS:
… …
3448 for (i = 1; i < items; ++i) 4034 for (i = 1; i < items; ++i)
3449 av_push (av, SvREFCNT_inc_NN (ST (i))); 4035 av_push (av, SvREFCNT_inc_NN (ST (i)));
3450 4036
3451 if ((SV *)hv == &PL_sv_undef) 4037 if ((SV *)hv == &PL_sv_undef)
3452 { 4038 {
3453 PUSHMARK (SP); 4039 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3454 EXTEND (SP, 2);
3455 PUSHs (sv_Coro);
3456 PUSHs ((SV *)cv_pool_handler);
3457 PUTBACK;
3458 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3459 SPAGAIN;
3460
3461 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4040 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4041 SvREFCNT_dec (sv);
3462 } 4042 }
3463 4043
3464 { 4044 {
3465 struct coro *coro = SvSTATE_hv (hv); 4045 struct coro *coro = SvSTATE_hv (hv);
3466 4046
… …
3498 on_leave = 1 4078 on_leave = 1
3499 PROTOTYPE: & 4079 PROTOTYPE: &
3500 CODE: 4080 CODE:
3501{ 4081{
3502 struct coro *coro = SvSTATE_current; 4082 struct coro *coro = SvSTATE_current;
3503 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4083 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3504 4084
3505 block = s_get_cv_croak (block); 4085 block = s_get_cv_croak (block);
3506 4086
3507 if (!*avp) 4087 if (!*avp)
3508 *avp = newAV (); 4088 *avp = newAV ();
… …
3528 4108
3529SV * 4109SV *
3530new (SV *klass, SV *count = 0) 4110new (SV *klass, SV *count = 0)
3531 CODE: 4111 CODE:
3532{ 4112{
3533 int semcnt = 1; 4113 int semcnt = 1;
3534 4114
3535 if (count) 4115 if (count)
3536 { 4116 {
3537 SvGETMAGIC (count); 4117 SvGETMAGIC (count);
3538 4118
… …
3598 XSRETURN_NO; 4178 XSRETURN_NO;
3599} 4179}
3600 4180
3601void 4181void
3602waiters (SV *self) 4182waiters (SV *self)
3603 PPCODE: 4183 PPCODE:
3604{ 4184{
3605 AV *av = (AV *)SvRV (self); 4185 AV *av = (AV *)SvRV (self);
3606 int wcount = AvFILLp (av) + 1 - 1; 4186 int wcount = AvFILLp (av) + 1 - 1;
3607 4187
3608 if (GIMME_V == G_SCALAR) 4188 if (GIMME_V == G_SCALAR)
… …
3617} 4197}
3618 4198
3619MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4199MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3620 4200
3621void 4201void
3622_may_delete (SV *sem, int count, int extra_refs) 4202_may_delete (SV *sem, int count, unsigned int extra_refs)
3623 PPCODE: 4203 PPCODE:
3624{ 4204{
3625 AV *av = (AV *)SvRV (sem); 4205 AV *av = (AV *)SvRV (sem);
3626 4206
3627 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4207 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3628 && AvFILLp (av) == 0 /* no waiters, just count */ 4208 && AvFILLp (av) == 0 /* no waiters, just count */
3629 && SvIV (AvARRAY (av)[0]) == count) 4209 && SvIV (AvARRAY (av)[0]) == count)
3630 XSRETURN_YES; 4210 XSRETURN_YES;
… …
3651 4231
3652void 4232void
3653broadcast (SV *self) 4233broadcast (SV *self)
3654 CODE: 4234 CODE:
3655{ 4235{
3656 AV *av = (AV *)SvRV (self); 4236 AV *av = (AV *)SvRV (self);
3657 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4237 coro_signal_wake (aTHX_ av, AvFILLp (av));
3658} 4238}
3659 4239
3660void 4240void
3661send (SV *self) 4241send (SV *self)
… …
3669 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3670} 4250}
3671 4251
3672IV 4252IV
3673awaited (SV *self) 4253awaited (SV *self)
3674 CODE: 4254 CODE:
3675 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3676 OUTPUT: 4256 OUTPUT:
3677 RETVAL 4257 RETVAL
3678 4258
3679 4259
… …
3684 4264
3685void 4265void
3686_schedule (...) 4266_schedule (...)
3687 CODE: 4267 CODE:
3688{ 4268{
3689 static int incede; 4269 static int incede;
3690 4270
3691 api_cede_notself (aTHX); 4271 api_cede_notself (aTHX);
3692 4272
3693 ++incede; 4273 ++incede;
3694 while (coro_nready >= incede && api_cede (aTHX)) 4274 while (coro_nready >= incede && api_cede (aTHX))
… …
3717 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3718 sv_setpv ((SV *)slf_cv, proto); 4298 sv_setpv ((SV *)slf_cv, proto);
3719 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3720} 4300}
3721 4301
4302MODULE = Coro::State PACKAGE = Coro::Select
4303
4304void
4305patch_pp_sselect ()
4306 CODE:
4307 if (!coro_old_pp_sselect)
4308 {
4309 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4310 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4311 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4312 }
4313
4314void
4315unpatch_pp_sselect ()
4316 CODE:
4317 if (coro_old_pp_sselect)
4318 {
4319 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4320 coro_old_pp_sselect = 0;
4321 }
4322

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