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Comparing Coro/Coro/State.xs (file contents):
Revision 1.264 by root, Fri Nov 14 02:29:09 2008 UTC vs.
Revision 1.379 by root, Tue Jul 27 14:50:17 2010 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
108#endif 64#endif
109 65
110#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 72# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 73#endif
118 74
119/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 76 * portable way as possible. */
77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
79# define STACKLEVEL __builtin_frame_address (0)
80#else
121#define dSTACKLEVEL volatile char stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 82# define STACKLEVEL ((void *)&stacklevel)
83#endif
123 84
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
125 86
126#if __GNUC__ >= 3 87#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
129# define INLINE static inline 90# define INLINE static inline
130#else 91#else
131# define attribute(x) 92# define attribute(x)
132# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
133# define INLINE static 94# define INLINE static
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
138 99
139#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
140 101
141#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
142 104
143#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 106# if CORO_PTHREAD
149static void *coro_thx; 107static void *coro_thx;
150# endif 108# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 109#endif
158 110
159# undef LOCK 111#ifdef __linux
160# define LOCK (void)0 112# include <time.h> /* for timespec */
161# undef UNLOCK 113# include <syscall.h> /* for SYS_* */
162# define UNLOCK (void)0 114# ifdef SYS_clock_gettime
163 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
164/* helper storage struct for Coro::AIO */ 116# define CORO_CLOCK_MONOTONIC 1
165struct io_state 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
166{ 118# endif
167 AV *res; 119#endif
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 120
174static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
175 127
176static U32 cctx_gen; 128static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 129static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 130static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 132static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 135
185struct transfer_args 136static AV *av_destroy; /* destruction queue */
186{ 137static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 138static SV *sv_idle; /* $Coro::idle */
188};
189 139
190static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 142static SV *rv_diehook;
193static SV *rv_warnhook; 143static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
195 145
196/* async_pool helper stuff */ 146/* async_pool helper stuff */
197static SV *sv_pool_rss; 147static SV *sv_pool_rss;
198static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
200 153
201/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
202static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
203 162
204static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
206 165
207enum { 166enum {
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 173};
215 174
216/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 176typedef struct coro_cctx
177{
218 struct coro_cctx *next; 178 struct coro_cctx *next;
219 179
220 /* the stack */ 180 /* the stack */
221 void *sptr; 181 void *sptr;
222 size_t ssize; 182 size_t ssize;
… …
232 int valgrind_id; 192 int valgrind_id;
233#endif 193#endif
234 unsigned char flags; 194 unsigned char flags;
235} coro_cctx; 195} coro_cctx;
236 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
237enum { 201enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
242}; 207};
243 208
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 210typedef struct
211{
246 SV *defsv; 212 SV *defsv;
247 AV *defav; 213 AV *defav;
248 SV *errsv; 214 SV *errsv;
249 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
250#define VAR(name,type) type name; 217#define VAR(name,type) type name;
251# include "state.h" 218# include "state.h"
252#undef VAR 219#undef VAR
253} perl_slots; 220} perl_slots;
254 221
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 223
257/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
258struct coro { 225struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 227 coro_cctx *cctx;
261 228
262 /* process data */ 229 /* ready queue */
230 struct coro *next_ready;
231
232 /* state data */
233 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 234 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
265 236
237 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
242 void (*on_destroy)(pTHX_ struct coro *coro);
270 243
271 /* statistics */ 244 /* statistics */
272 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
273 246
274 /* coro process data */ 247 /* coro process data */
275 int prio; 248 int prio;
276 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
277 251
278 /* async_pool */ 252 /* async_pool */
279 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
280 266
281 /* linked list */ 267 /* linked list */
282 struct coro *next, *prev; 268 struct coro *next, *prev;
283}; 269};
284 270
285typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
287 273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278
288/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
289 280
290#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
296 287
297/* for Coro.pm */ 288/* for Coro.pm */
298static SV *coro_current; 289static SV *coro_current;
299static SV *coro_readyhook; 290static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 292static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
303 315
304/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
305 317
306static SV * 318static SV *
307coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 343 get_hv (name, create);
332#endif 344#endif
333 return get_hv (name, create); 345 return get_hv (name, create);
334} 346}
335 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
336static AV * 447static AV *
337coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
338{ 449{
339 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
341 452
342 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 459#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 461 --AvFILLp (padlist);
351 462
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
354 465
355 return newpadlist; 466 return newpadlist;
356} 467}
357 468
358static void 469static void
359free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
360{ 471{
361 /* may be during global destruction */ 472 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
363 { 474 {
364 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
365 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
366 { 478 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
368 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 481 I32 j = AvFILLp (av);
370 SV *sv; 482
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 488 }
377 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
379 } 494 }
380} 495}
381 496
382static int 497static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 499{
385 AV *padlist; 500 AV *padlist;
386 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
387 506
388 /* casting is fun. */ 507 /* casting is fun. */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
390 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
391 510
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 512
394 return 0; 513 return 0;
395} 514}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 515
400static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 517 0, 0, 0, 0,
402 coro_cv_free 518 coro_cv_free
403}; 519};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 520
441/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
442static void 522static void
443get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
444{ 524{
… …
450 else 530 else
451 { 531 {
452#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
459#else 539#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 541#endif
462 } 542 }
463} 543}
464 544
465static void 545static void
… …
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
473 553
474 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
475 555
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
478 558
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 560}
481 561
482/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
483 617
484static void 618static void
485load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
486{ 620{
487 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
488 c->slot = 0; 622 c->slot = 0;
489 623
490 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
491 625
492 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
496 631
497 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 633 # include "state.h"
499 #undef VAR 634 #undef VAR
500 635
… …
511 CvPADLIST (cv) = (AV *)POPs; 646 CvPADLIST (cv) = (AV *)POPs;
512 } 647 }
513 648
514 PUTBACK; 649 PUTBACK;
515 } 650 }
651
652 slf_frame = c->slf_frame;
653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
516} 672}
517 673
518static void 674static void
519save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
520{ 676{
677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
696 c->slf_frame = slf_frame;
697
521 { 698 {
522 dSP; 699 dSP;
523 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 701 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 702 PERL_SI *top_si = PL_curstackinfo;
… …
535 { 712 {
536 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
537 { 714 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
539 716
540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
541 { 718 {
542 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
543 720
544 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
545 { 722 {
… …
569 /* we manually unroll here, as usually 2 slots is enough */ 746 /* we manually unroll here, as usually 2 slots is enough */
570 if (SLOT_COUNT >= 1) CXINC; 747 if (SLOT_COUNT >= 1) CXINC;
571 if (SLOT_COUNT >= 2) CXINC; 748 if (SLOT_COUNT >= 2) CXINC;
572 if (SLOT_COUNT >= 3) CXINC; 749 if (SLOT_COUNT >= 3) CXINC;
573 { 750 {
574 int i; 751 unsigned int i;
575 for (i = 3; i < SLOT_COUNT; ++i) 752 for (i = 3; i < SLOT_COUNT; ++i)
576 CXINC; 753 CXINC;
577 } 754 }
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 755 cxstack_ix -= SLOT_COUNT; /* undo allocation */
579 756
580 c->mainstack = PL_mainstack; 757 c->mainstack = PL_mainstack;
581 758
582 { 759 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 760 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 761
585 slot->defav = GvAV (PL_defgv); 762 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 763 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 764 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 765 slot->irsgv = GvSV (irsgv);
766 slot->hinthv = GvHV (PL_hintgv);
589 767
590 #define VAR(name,type) slot->name = PL_ ## name; 768 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 769 # include "state.h"
592 #undef VAR 770 #undef VAR
593 } 771 }
594} 772}
595 773
596/* 774/*
597 * allocate various perl stacks. This is an exact copy 775 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 776 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 777 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 778 * not usually need a lot of stackspace.
601 */ 779 */
602#if CORO_PREFER_PERL_FUNCTIONS 780#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 781# define coro_init_stacks(thx) init_stacks ()
604#else 782#else
605static void 783static void
606coro_init_stacks (pTHX) 784coro_init_stacks (pTHX)
607{ 785{
608 PL_curstackinfo = new_stackinfo(32, 8); 786 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 849#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 850 Safefree (PL_retstack);
673#endif 851#endif
674} 852}
675 853
854#define CORO_RSS \
855 rss += sizeof (SYM (curstackinfo)); \
856 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
857 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
858 rss += SYM (tmps_max) * sizeof (SV *); \
859 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
860 rss += SYM (scopestack_max) * sizeof (I32); \
861 rss += SYM (savestack_max) * sizeof (ANY);
862
676static size_t 863static size_t
677coro_rss (pTHX_ struct coro *coro) 864coro_rss (pTHX_ struct coro *coro)
678{ 865{
679 size_t rss = sizeof (*coro); 866 size_t rss = sizeof (*coro);
680 867
681 if (coro->mainstack) 868 if (coro->mainstack)
682 { 869 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 870 if (coro->flags & CF_RUNNING)
687 { 871 {
688 slot = &tmp_slot; 872 #define SYM(sym) PL_ ## sym
689 873 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 874 #undef SYM
693 } 875 }
694 else 876 else
695 slot = coro->slot;
696
697 if (slot)
698 { 877 {
699 rss += sizeof (slot->curstackinfo); 878 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 879 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 880 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 881 }
711 } 882 }
712 883
713 return rss; 884 return rss;
714} 885}
… …
724#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 895#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
725 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 896 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
726 (const char*)(mg)->mg_ptr) 897 (const char*)(mg)->mg_ptr)
727#endif 898#endif
728 899
729/* we sometimes need to create the effect of entersub calling us */
730#define SSL_HEAD (void)0
731/* we somtimes need to create the effect of leaving via entersub */
732#define SSL_TAIL (void)0
733
734/* 900/*
735 * This overrides the default magic get method of %SIG elements. 901 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 902 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 903 * and instead of trying to save and restore the hash elements, we just provide
738 * readback here. 904 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 905 */
743static int 906static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 907coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 908{
746 const char *s = MgPV_nolen_const (mg); 909 const char *s = MgPV_nolen_const (mg);
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 962 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 963
801 if (svp) 964 if (svp)
802 { 965 {
803 SV *old = *svp; 966 SV *old = *svp;
804 *svp = newSVsv (sv); 967 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 968 SvREFCNT_dec (old);
806 return 0; 969 return 0;
807 } 970 }
808 } 971 }
809 972
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 973 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811} 974}
812 975
813static void 976static void
977prepare_nop (pTHX_ struct coro_transfer_args *ta)
978{
979 /* kind of mega-hacky, but works */
980 ta->next = ta->prev = (struct coro *)ta;
981}
982
983static int
984slf_check_nop (pTHX_ struct CoroSLF *frame)
985{
986 return 0;
987}
988
989static int
990slf_check_repeat (pTHX_ struct CoroSLF *frame)
991{
992 return 1;
993}
994
995static UNOP init_perl_op;
996
997static void NOINLINE /* noinline to keep it out of the transfer fast path */
814coro_setup (pTHX_ struct coro *coro) 998init_perl (pTHX_ struct coro *coro)
815{ 999{
816 /* 1000 /*
817 * emulate part of the perl startup here. 1001 * emulate part of the perl startup here.
818 */ 1002 */
819 coro_init_stacks (aTHX); 1003 coro_init_stacks (aTHX);
820 1004
821 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
822 PL_curcop = &PL_compiling; 1006 PL_curcop = &PL_compiling;
823 PL_in_eval = EVAL_NULL; 1007 PL_in_eval = EVAL_NULL;
824 PL_comppad = 0; 1008 PL_comppad = 0;
1009 PL_comppad_name = 0;
1010 PL_comppad_name_fill = 0;
1011 PL_comppad_name_floor = 0;
825 PL_curpm = 0; 1012 PL_curpm = 0;
826 PL_curpad = 0; 1013 PL_curpad = 0;
827 PL_localizing = 0; 1014 PL_localizing = 0;
828 PL_dirty = 0; 1015 PL_dirty = 0;
829 PL_restartop = 0; 1016 PL_restartop = 0;
830#if PERL_VERSION_ATLEAST (5,10,0) 1017#if PERL_VERSION_ATLEAST (5,10,0)
831 PL_parser = 0; 1018 PL_parser = 0;
832#endif 1019#endif
1020 PL_hints = 0;
833 1021
834 /* recreate the die/warn hooks */ 1022 /* recreate the die/warn hooks */
835 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1023 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
836 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1024 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
837 1025
838 GvSV (PL_defgv) = newSV (0); 1026 GvSV (PL_defgv) = newSV (0);
839 GvAV (PL_defgv) = coro->args; coro->args = 0; 1027 GvAV (PL_defgv) = coro->args; coro->args = 0;
840 GvSV (PL_errgv) = newSV (0); 1028 GvSV (PL_errgv) = newSV (0);
841 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1029 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1030 GvHV (PL_hintgv) = 0;
842 PL_rs = newSVsv (GvSV (irsgv)); 1031 PL_rs = newSVsv (GvSV (irsgv));
843 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1032 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
844 1033
845 { 1034 {
846 dSP; 1035 dSP;
847 UNOP myop; 1036 UNOP myop;
848 1037
849 Zero (&myop, 1, UNOP); 1038 Zero (&myop, 1, UNOP);
850 myop.op_next = Nullop; 1039 myop.op_next = Nullop;
1040 myop.op_type = OP_ENTERSUB;
851 myop.op_flags = OPf_WANT_VOID; 1041 myop.op_flags = OPf_WANT_VOID;
852 1042
853 PUSHMARK (SP); 1043 PUSHMARK (SP);
854 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1044 PUSHs ((SV *)coro->startcv);
855 PUTBACK; 1045 PUTBACK;
856 PL_op = (OP *)&myop; 1046 PL_op = (OP *)&myop;
857 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1047 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
858 SPAGAIN;
859 } 1048 }
860 1049
861 /* this newly created coroutine might be run on an existing cctx which most 1050 /* this newly created coroutine might be run on an existing cctx which most
862 * likely was suspended in set_stacklevel, called from entersub. 1051 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
863 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
864 * so we ENTER here for symmetry.
865 */ 1052 */
866 SSL_HEAD; 1053 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
867} 1054 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
868 1055
1056 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1057 init_perl_op.op_next = PL_op;
1058 init_perl_op.op_type = OP_ENTERSUB;
1059 init_perl_op.op_ppaddr = pp_slf;
1060 /* no flags etc. required, as an init function won't be called */
1061
1062 PL_op = (OP *)&init_perl_op;
1063
1064 /* copy throw, in case it was set before init_perl */
1065 CORO_THROW = coro->except;
1066
1067 SWAP_SVS (coro);
1068
1069 if (expect_false (enable_times))
1070 {
1071 coro_times_update ();
1072 coro_times_sub (coro);
1073 }
1074}
1075
869static void 1076static void
870coro_destruct (pTHX_ struct coro *coro) 1077coro_unwind_stacks (pTHX)
871{ 1078{
872 if (!IN_DESTRUCT) 1079 if (!IN_DESTRUCT)
873 { 1080 {
874 /* restore all saved variables and stuff */ 1081 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0); 1082 LEAVE_SCOPE (0);
… …
883 POPSTACK_TO (PL_mainstack); 1090 POPSTACK_TO (PL_mainstack);
884 1091
885 /* unwind main stack */ 1092 /* unwind main stack */
886 dounwind (-1); 1093 dounwind (-1);
887 } 1094 }
1095}
888 1096
889 SvREFCNT_dec (GvSV (PL_defgv)); 1097static void
890 SvREFCNT_dec (GvAV (PL_defgv)); 1098destroy_perl (pTHX_ struct coro *coro)
891 SvREFCNT_dec (GvSV (PL_errgv)); 1099{
892 SvREFCNT_dec (PL_defoutgv); 1100 SV *svf [9];
893 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv));
895 1101
896 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook);
898 1102 {
1103 struct coro *current = SvSTATE_current;
1104
1105 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1106
1107 save_perl (aTHX_ current);
1108 load_perl (aTHX_ coro);
1109
1110 coro_unwind_stacks (aTHX);
1111 coro_destruct_stacks (aTHX);
1112
1113 /* restore swapped sv's */
1114 SWAP_SVS (coro);
1115
1116 // now save some sv's to be free'd later
1117 svf [0] = GvSV (PL_defgv);
1118 svf [1] = (SV *)GvAV (PL_defgv);
1119 svf [2] = GvSV (PL_errgv);
1120 svf [3] = (SV *)PL_defoutgv;
1121 svf [4] = PL_rs;
1122 svf [5] = GvSV (irsgv);
1123 svf [6] = (SV *)GvHV (PL_hintgv);
1124 svf [7] = PL_diehook;
1125 svf [8] = PL_warnhook;
1126 assert (9 == sizeof (svf) / sizeof (*svf));
1127
1128 load_perl (aTHX_ current);
1129 }
1130
1131 {
1132 unsigned int i;
1133
1134 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1135 SvREFCNT_dec (svf [i]);
1136
899 SvREFCNT_dec (coro->saved_deffh); 1137 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 1138 SvREFCNT_dec (coro->rouse_cb);
901 1139 SvREFCNT_dec (coro->invoke_cb);
902 coro_destruct_stacks (aTHX); 1140 SvREFCNT_dec (coro->invoke_av);
1141 }
903} 1142}
904 1143
905INLINE void 1144INLINE void
906free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
907{ 1146{
… …
915static int 1154static int
916runops_trace (pTHX) 1155runops_trace (pTHX)
917{ 1156{
918 COP *oldcop = 0; 1157 COP *oldcop = 0;
919 int oldcxix = -2; 1158 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 1159
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 1161 {
925 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
926 1163
927 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
928 { 1165 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
930 { 1167 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 1169 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
934 SV **cb; 1171 SV **cb;
… …
971 1208
972 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
973 { 1210 {
974 SV **cb; 1211 SV **cb;
975 1212
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
977 { 1214 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1216
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1218 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1219 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
986 1222
987 if (isGV (gv)) 1223 if (isGV (gv))
… …
992 SAVETMPS; 1228 SAVETMPS;
993 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
994 PUSHMARK (SP); 1230 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1232 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1234 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1237 SPAGAIN;
1002 FREETMPS; 1238 FREETMPS;
… …
1005 } 1241 }
1006 1242
1007 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
1008 } 1244 }
1009 1245
1010 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1247 {
1012 dSP; 1248 dSP;
1013 1249
1014 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1251 ENTER;
… …
1034 1270
1035 TAINT_NOT; 1271 TAINT_NOT;
1036 return 0; 1272 return 0;
1037} 1273}
1038 1274
1275static struct CoroSLF cctx_ssl_frame;
1276
1039static void 1277static void
1040prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1279{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1280 ta->prev = 0;
1044} 1281}
1045 1282
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1283static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1285{
1049/* also initialises PL_top_env */ 1286 *frame = cctx_ssl_frame;
1287
1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1289}
1290
1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1292static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1052{ 1294{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1057 1296
1058 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1060 1299
1061 Zero (&myop, 1, UNOP); 1300 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1301 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1304
1065 PUSHMARK (SP); 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1306 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1307
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1309 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1310}
1074 1311
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1312/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1313INLINE void
1077transfer_tail (pTHX) 1314transfer_tail (pTHX)
1078{ 1315{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1316 free_coro_mortal (aTHX);
1084 UNLOCK;
1085
1086 if (expect_false (next->throw))
1087 {
1088 SV *exception = sv_2mortal (next->throw);
1089
1090 next->throw = 0;
1091 sv_setsv (ERRSV, exception);
1092 croak (0);
1093 }
1094} 1317}
1095 1318
1096/* 1319/*
1097 * this is a _very_ stripped down perl interpreter ;) 1320 * this is a _very_ stripped down perl interpreter ;)
1098 */ 1321 */
… …
1105# endif 1328# endif
1106#endif 1329#endif
1107 { 1330 {
1108 dTHX; 1331 dTHX;
1109 1332
1110 /* entersub called ENTER, but we never 'returned', undo that here */ 1333 /* normally we would need to skip the entersub here */
1111 SSL_TAIL; 1334 /* not doing so will re-execute it, which is exactly what we want */
1112
1113 /* we now skip the op that did lead to transfer() */
1114 PL_op = PL_op->op_next; 1335 /* PL_nop = PL_nop->op_next */
1115 1336
1116 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1117 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1118 1339
1119 /* cctx_run is the alternative tail of transfer() */ 1340 /* cctx_run is the alternative tail of transfer() */
1120 transfer_tail (aTHX); 1341 transfer_tail (aTHX);
1121 1342
1122 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1123 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1124 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1125 1351
1126 /* 1352 /*
1127 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1128 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1129 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1130 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1131 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1132 */ 1360 */
1133 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1134 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1135 } 1363 }
1136} 1364}
… …
1213cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1214{ 1442{
1215 if (!cctx) 1443 if (!cctx)
1216 return; 1444 return;
1217 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1218 --cctx_count; 1448 --cctx_count;
1219 coro_destroy (&cctx->cctx); 1449 coro_destroy (&cctx->cctx);
1220 1450
1221 /* coro_transfer creates new, empty cctx's */ 1451 /* coro_transfer creates new, empty cctx's */
1222 if (cctx->sptr) 1452 if (cctx->sptr)
… …
1280/** coroutine switching *****************************************************/ 1510/** coroutine switching *****************************************************/
1281 1511
1282static void 1512static void
1283transfer_check (pTHX_ struct coro *prev, struct coro *next) 1513transfer_check (pTHX_ struct coro *prev, struct coro *next)
1284{ 1514{
1515 /* TODO: throwing up here is considered harmful */
1516
1285 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1286 { 1518 {
1287 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1288 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1289 1521
1290 if (expect_false (next->flags & CF_RUNNING))
1291 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1292
1293 if (expect_false (next->flags & CF_DESTROYED)) 1522 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1294 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1295 1524
1296#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1297 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1298 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1299#endif 1528#endif
1300 } 1529 }
1301} 1530}
1302 1531
1303/* always use the TRANSFER macro */ 1532/* always use the TRANSFER macro */
1304static void NOINLINE 1533static void NOINLINE /* noinline so we have a fixed stackframe */
1305transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1306{ 1535{
1307 dSTACKLEVEL; 1536 dSTACKLEVEL;
1308 1537
1309 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1310 if (expect_false (!next)) 1539 if (expect_false (!prev))
1311 { 1540 {
1312 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1541 cctx_current->idle_sp = STACKLEVEL;
1313 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1314 } 1543 }
1315 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1316 { 1545 {
1317 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1318 1547
1319 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1320 { 1549 {
1321 /* create a new empty/source context */ 1550 /* create a new empty/source context */
1322 prev->cctx = cctx_new_empty ();
1323 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1324 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1325 } 1553 }
1326 1554
1327 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
1328 next->flags |= CF_RUNNING; 1556 next->flags |= CF_RUNNING;
1329
1330 LOCK;
1331 1557
1332 /* first get rid of the old state */ 1558 /* first get rid of the old state */
1333 save_perl (aTHX_ prev); 1559 save_perl (aTHX_ prev);
1334 1560
1335 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1336 { 1562 {
1337 /* need to start coroutine */ 1563 /* need to start coroutine */
1338 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1339 /* setup coroutine call */ 1565 /* setup coroutine call */
1340 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1341 } 1567 }
1342 else 1568 else
1343 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1344 1570
1345 prev__cctx = prev->cctx;
1346
1347 /* possibly untie and reuse the cctx */ 1571 /* possibly untie and reuse the cctx */
1348 if (expect_true ( 1572 if (expect_true (
1349 prev__cctx->idle_sp == STACKLEVEL 1573 cctx_current->idle_sp == STACKLEVEL
1350 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1351 && !force_cctx 1575 && !force_cctx
1352 )) 1576 ))
1353 { 1577 {
1354 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1355 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1356 1580
1357 prev->cctx = 0;
1358
1359 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1581 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1360 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1361 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1362 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1363 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1364 1586
1365 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1366 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1367 1591
1368 ++next->usecount; 1592 ++next->usecount;
1369 1593
1370 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1371 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1372 1596
1373 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1597 next->cctx = 0;
1374 transfer_next = next;
1375 1598
1376 if (expect_false (prev__cctx != next->cctx)) 1599 if (expect_false (cctx_prev != cctx_current))
1377 { 1600 {
1378 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1379 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1380 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1381 } 1604 }
1382 1605
1383 transfer_tail (aTHX); 1606 transfer_tail (aTHX);
1384 } 1607 }
1385} 1608}
… …
1392static int 1615static int
1393coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1394{ 1617{
1395 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1396 return 0; 1619 return 0;
1620
1621 if (coro->on_destroy && !PL_dirty)
1622 coro->on_destroy (aTHX_ coro);
1397 1623
1398 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1399 1625
1400 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
1401 { 1627 {
1402 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1628 /* reduce nready, as destroying a ready coro effectively unreadies it */
1403 /* alternative: look through all ready queues and remove the coro */ 1629 /* alternative: look through all ready queues and remove the coro */
1404 LOCK;
1405 --coro_nready; 1630 --coro_nready;
1406 UNLOCK;
1407 } 1631 }
1408 else 1632 else
1409 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1410 1634
1411 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1412 { 1636 && coro->mainstack != main_mainstack
1413 struct coro temp; 1637 && coro->slot
1414 1638 && !PL_dirty)
1415 if (coro->flags & CF_RUNNING)
1416 croak ("FATAL: tried to destroy currently running coroutine");
1417
1418 save_perl (aTHX_ &temp);
1419 load_perl (aTHX_ coro); 1639 destroy_perl (aTHX_ coro);
1420
1421 coro_destruct (aTHX_ coro);
1422
1423 load_perl (aTHX_ &temp);
1424
1425 coro->slot = 0;
1426 }
1427
1428 cctx_destroy (coro->cctx);
1429 SvREFCNT_dec (coro->args);
1430 1640
1431 if (coro->next) coro->next->prev = coro->prev; 1641 if (coro->next) coro->next->prev = coro->prev;
1432 if (coro->prev) coro->prev->next = coro->next; 1642 if (coro->prev) coro->prev->next = coro->next;
1433 if (coro == coro_first) coro_first = coro->next; 1643 if (coro == coro_first) coro_first = coro->next;
1644
1645 cctx_destroy (coro->cctx);
1646 SvREFCNT_dec (coro->startcv);
1647 SvREFCNT_dec (coro->args);
1648 SvREFCNT_dec (coro->swap_sv);
1649 SvREFCNT_dec (CORO_THROW);
1434 1650
1435 return 1; 1651 return 1;
1436} 1652}
1437 1653
1438static int 1654static int
… …
1472# define MGf_DUP 0 1688# define MGf_DUP 0
1473#endif 1689#endif
1474}; 1690};
1475 1691
1476static void 1692static void
1477prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1693prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1478{ 1694{
1479 ta->prev = SvSTATE (prev_sv); 1695 ta->prev = SvSTATE (prev_sv);
1480 ta->next = SvSTATE (next_sv); 1696 ta->next = SvSTATE (next_sv);
1481 TRANSFER_CHECK (*ta); 1697 TRANSFER_CHECK (*ta);
1482} 1698}
1483 1699
1484static void 1700static void
1485api_transfer (SV *prev_sv, SV *next_sv) 1701api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1486{ 1702{
1487 dTHX;
1488 struct transfer_args ta; 1703 struct coro_transfer_args ta;
1489 1704
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1705 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1706 TRANSFER (ta, 1);
1492} 1707}
1493 1708
1494/** Coro ********************************************************************/ 1709/** Coro ********************************************************************/
1495 1710
1496static void 1711INLINE void
1497coro_enq (pTHX_ SV *coro_sv) 1712coro_enq (pTHX_ struct coro *coro)
1498{ 1713{
1499 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1714 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1715
1502static SV * 1716 SvREFCNT_inc_NN (coro->hv);
1717
1718 coro->next_ready = 0;
1719 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1720 ready [1] = coro;
1721}
1722
1723INLINE struct coro *
1503coro_deq (pTHX) 1724coro_deq (pTHX)
1504{ 1725{
1505 int prio; 1726 int prio;
1506 1727
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1728 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1729 {
1509 return av_shift (coro_ready [prio]); 1730 struct coro **ready = coro_ready [prio];
1731
1732 if (ready [0])
1733 {
1734 struct coro *coro = ready [0];
1735 ready [0] = coro->next_ready;
1736 return coro;
1737 }
1738 }
1510 1739
1511 return 0; 1740 return 0;
1512} 1741}
1513 1742
1743static void
1744invoke_sv_ready_hook_helper (void)
1745{
1746 dTHX;
1747 dSP;
1748
1749 ENTER;
1750 SAVETMPS;
1751
1752 PUSHMARK (SP);
1753 PUTBACK;
1754 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1755
1756 FREETMPS;
1757 LEAVE;
1758}
1759
1514static int 1760static int
1515api_ready (SV *coro_sv) 1761api_ready (pTHX_ SV *coro_sv)
1516{ 1762{
1517 dTHX;
1518 struct coro *coro;
1519 SV *sv_hook;
1520 void (*xs_hook)(void);
1521
1522 if (SvROK (coro_sv))
1523 coro_sv = SvRV (coro_sv);
1524
1525 coro = SvSTATE (coro_sv); 1763 struct coro *coro = SvSTATE (coro_sv);
1526 1764
1527 if (coro->flags & CF_READY) 1765 if (coro->flags & CF_READY)
1528 return 0; 1766 return 0;
1529 1767
1530 coro->flags |= CF_READY; 1768 coro->flags |= CF_READY;
1531 1769
1532 LOCK; 1770 coro_enq (aTHX_ coro);
1533 1771
1534 sv_hook = coro_nready ? 0 : coro_readyhook; 1772 if (!coro_nready++)
1535 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1773 if (coroapi.readyhook)
1536 1774 coroapi.readyhook ();
1537 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1538 ++coro_nready;
1539
1540 UNLOCK;
1541
1542 if (sv_hook)
1543 {
1544 dSP;
1545
1546 ENTER;
1547 SAVETMPS;
1548
1549 PUSHMARK (SP);
1550 PUTBACK;
1551 call_sv (sv_hook, G_DISCARD);
1552 SPAGAIN;
1553
1554 FREETMPS;
1555 LEAVE;
1556 }
1557
1558 if (xs_hook)
1559 xs_hook ();
1560 1775
1561 return 1; 1776 return 1;
1562} 1777}
1563 1778
1564static int 1779static int
1565api_is_ready (SV *coro_sv) 1780api_is_ready (pTHX_ SV *coro_sv)
1566{ 1781{
1567 dTHX;
1568
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1782 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1783}
1571 1784
1785/* expects to own a reference to next->hv */
1572INLINE void 1786INLINE void
1573prepare_schedule (pTHX_ struct transfer_args *ta) 1787prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1788{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 LOCK;
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586 UNLOCK;
1587
1588 ENTER;
1589 SAVETMPS;
1590
1591 PUSHMARK (SP);
1592 PUTBACK;
1593 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1594 SPAGAIN;
1595
1596 FREETMPS;
1597 LEAVE;
1598 continue;
1599 }
1600
1601 ta->next = SvSTATE (next_sv);
1602
1603 /* cannot transfer to destroyed coros, skip and look for next */
1604 if (expect_false (ta->next->flags & CF_DESTROYED))
1605 {
1606 UNLOCK;
1607 SvREFCNT_dec (next_sv);
1608 /* coro_nready has already been taken care of by destroy */
1609 continue;
1610 }
1611
1612 --coro_nready;
1613 UNLOCK;
1614 break;
1615 }
1616
1617 /* free this only after the transfer */
1618 prev_sv = SvRV (coro_current); 1789 SV *prev_sv = SvRV (coro_current);
1790
1619 ta->prev = SvSTATE (prev_sv); 1791 ta->prev = SvSTATE_hv (prev_sv);
1792 ta->next = next;
1793
1620 TRANSFER_CHECK (*ta); 1794 TRANSFER_CHECK (*ta);
1621 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1795
1622 ta->next->flags &= ~CF_READY;
1623 SvRV_set (coro_current, next_sv); 1796 SvRV_set (coro_current, (SV *)next->hv);
1624 1797
1625 LOCK;
1626 free_coro_mortal (aTHX); 1798 free_coro_mortal (aTHX);
1627 coro_mortal = prev_sv; 1799 coro_mortal = prev_sv;
1628 UNLOCK; 1800}
1801
1802static void
1803prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1804{
1805 for (;;)
1806 {
1807 struct coro *next = coro_deq (aTHX);
1808
1809 if (expect_true (next))
1810 {
1811 /* cannot transfer to destroyed coros, skip and look for next */
1812 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1813 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1814 else
1815 {
1816 next->flags &= ~CF_READY;
1817 --coro_nready;
1818
1819 prepare_schedule_to (aTHX_ ta, next);
1820 break;
1821 }
1822 }
1823 else
1824 {
1825 /* nothing to schedule: call the idle handler */
1826 if (SvROK (sv_idle)
1827 && SvOBJECT (SvRV (sv_idle)))
1828 {
1829 if (SvRV (sv_idle) == SvRV (coro_current))
1830 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1831
1832 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1833 api_ready (aTHX_ SvRV (sv_idle));
1834 --coro_nready;
1835 }
1836 else
1837 {
1838 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1839 dSP;
1840
1841 ENTER;
1842 SAVETMPS;
1843
1844 PUSHMARK (SP);
1845 PUTBACK;
1846 call_sv (sv_idle, G_VOID | G_DISCARD);
1847
1848 FREETMPS;
1849 LEAVE;
1850 }
1851 }
1852 }
1629} 1853}
1630 1854
1631INLINE void 1855INLINE void
1632prepare_cede (pTHX_ struct transfer_args *ta) 1856prepare_cede (pTHX_ struct coro_transfer_args *ta)
1633{ 1857{
1634 api_ready (coro_current); 1858 api_ready (aTHX_ coro_current);
1635 prepare_schedule (aTHX_ ta); 1859 prepare_schedule (aTHX_ ta);
1636} 1860}
1637 1861
1862INLINE void
1863prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1864{
1865 SV *prev = SvRV (coro_current);
1866
1867 if (coro_nready)
1868 {
1869 prepare_schedule (aTHX_ ta);
1870 api_ready (aTHX_ prev);
1871 }
1872 else
1873 prepare_nop (aTHX_ ta);
1874}
1875
1876static void
1877api_schedule (pTHX)
1878{
1879 struct coro_transfer_args ta;
1880
1881 prepare_schedule (aTHX_ &ta);
1882 TRANSFER (ta, 1);
1883}
1884
1885static void
1886api_schedule_to (pTHX_ SV *coro_sv)
1887{
1888 struct coro_transfer_args ta;
1889 struct coro *next = SvSTATE (coro_sv);
1890
1891 SvREFCNT_inc_NN (coro_sv);
1892 prepare_schedule_to (aTHX_ &ta, next);
1893}
1894
1638static int 1895static int
1639prepare_cede_notself (pTHX_ struct transfer_args *ta) 1896api_cede (pTHX)
1640{ 1897{
1641 if (coro_nready) 1898 struct coro_transfer_args ta;
1642 { 1899
1643 SV *prev = SvRV (coro_current);
1644 prepare_schedule (aTHX_ ta); 1900 prepare_cede (aTHX_ &ta);
1645 api_ready (prev); 1901
1902 if (expect_true (ta.prev != ta.next))
1903 {
1904 TRANSFER (ta, 1);
1646 return 1; 1905 return 1;
1647 } 1906 }
1648 else 1907 else
1649 return 0; 1908 return 0;
1650} 1909}
1651 1910
1652static void
1653api_schedule (void)
1654{
1655 dTHX;
1656 struct transfer_args ta;
1657
1658 prepare_schedule (aTHX_ &ta);
1659 TRANSFER (ta, 1);
1660}
1661
1662static int 1911static int
1663api_cede (void) 1912api_cede_notself (pTHX)
1664{ 1913{
1665 dTHX; 1914 if (coro_nready)
1915 {
1666 struct transfer_args ta; 1916 struct coro_transfer_args ta;
1667 1917
1668 prepare_cede (aTHX_ &ta); 1918 prepare_cede_notself (aTHX_ &ta);
1669
1670 if (expect_true (ta.prev != ta.next))
1671 {
1672 TRANSFER (ta, 1); 1919 TRANSFER (ta, 1);
1673 return 1; 1920 return 1;
1674 } 1921 }
1675 else 1922 else
1676 return 0; 1923 return 0;
1677} 1924}
1678 1925
1679static int 1926static void
1680api_cede_notself (void)
1681{
1682 dTHX;
1683 struct transfer_args ta;
1684
1685 if (prepare_cede_notself (aTHX_ &ta))
1686 {
1687 TRANSFER (ta, 1);
1688 return 1;
1689 }
1690 else
1691 return 0;
1692}
1693
1694static void
1695api_trace (SV *coro_sv, int flags) 1927api_trace (pTHX_ SV *coro_sv, int flags)
1696{ 1928{
1697 dTHX;
1698 struct coro *coro = SvSTATE (coro_sv); 1929 struct coro *coro = SvSTATE (coro_sv);
1930
1931 if (coro->flags & CF_RUNNING)
1932 croak ("cannot enable tracing on a running coroutine, caught");
1699 1933
1700 if (flags & CC_TRACE) 1934 if (flags & CC_TRACE)
1701 { 1935 {
1702 if (!coro->cctx) 1936 if (!coro->cctx)
1703 coro->cctx = cctx_new_run (); 1937 coro->cctx = cctx_new_run ();
1704 else if (!(coro->cctx->flags & CC_TRACE)) 1938 else if (!(coro->cctx->flags & CC_TRACE))
1705 croak ("cannot enable tracing on coroutine with custom stack"); 1939 croak ("cannot enable tracing on coroutine with custom stack, caught");
1706 1940
1707 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1941 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1708 } 1942 }
1709 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1943 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1710 { 1944 {
… …
1715 else 1949 else
1716 coro->slot->runops = RUNOPS_DEFAULT; 1950 coro->slot->runops = RUNOPS_DEFAULT;
1717 } 1951 }
1718} 1952}
1719 1953
1720#if 0 1954static void
1955coro_call_on_destroy (pTHX_ struct coro *coro)
1956{
1957 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1958 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1959
1960 if (on_destroyp)
1961 {
1962 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1963
1964 while (AvFILLp (on_destroy) >= 0)
1965 {
1966 dSP; /* don't disturb outer sp */
1967 SV *cb = av_pop (on_destroy);
1968
1969 PUSHMARK (SP);
1970
1971 if (statusp)
1972 {
1973 int i;
1974 AV *status = (AV *)SvRV (*statusp);
1975 EXTEND (SP, AvFILLp (status) + 1);
1976
1977 for (i = 0; i <= AvFILLp (status); ++i)
1978 PUSHs (AvARRAY (status)[i]);
1979 }
1980
1981 PUTBACK;
1982 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1983 }
1984 }
1985}
1986
1987static void
1988slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 int i;
1991 HV *hv = (HV *)SvRV (coro_current);
1992 AV *av = newAV ();
1993
1994 /* items are actually not so common, so optimise for this case */
1995 if (items)
1996 {
1997 av_extend (av, items - 1);
1998
1999 for (i = 0; i < items; ++i)
2000 av_push (av, SvREFCNT_inc_NN (arg [i]));
2001 }
2002
2003 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2004
2005 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2006 api_ready (aTHX_ sv_manager);
2007
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_repeat;
2010
2011 /* as a minor optimisation, we could unwind all stacks here */
2012 /* but that puts extra pressure on pp_slf, and is not worth much */
2013 /*coro_unwind_stacks (aTHX);*/
2014}
2015
2016/*****************************************************************************/
2017/* async pool handler */
2018
1721static int 2019static int
1722coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2020slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1723{ 2021{
1724 AV *padlist; 2022 HV *hv = (HV *)SvRV (coro_current);
1725 AV *av = (AV *)mg->mg_obj; 2023 struct coro *coro = (struct coro *)frame->data;
1726 2024
1727 abort (); 2025 if (!coro->invoke_cb)
2026 return 1; /* loop till we have invoke */
2027 else
2028 {
2029 hv_store (hv, "desc", sizeof ("desc") - 1,
2030 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2031
2032 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2033
2034 {
2035 dSP;
2036 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2037 PUTBACK;
2038 }
2039
2040 SvREFCNT_dec (GvAV (PL_defgv));
2041 GvAV (PL_defgv) = coro->invoke_av;
2042 coro->invoke_av = 0;
2043
2044 return 0;
2045 }
2046}
2047
2048static void
2049slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2050{
2051 HV *hv = (HV *)SvRV (coro_current);
2052 struct coro *coro = SvSTATE_hv ((SV *)hv);
2053
2054 if (expect_true (coro->saved_deffh))
2055 {
2056 /* subsequent iteration */
2057 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2058 coro->saved_deffh = 0;
2059
2060 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2061 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2062 {
2063 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2064 coro->invoke_av = newAV ();
2065
2066 frame->prepare = prepare_nop;
2067 }
2068 else
2069 {
2070 av_clear (GvAV (PL_defgv));
2071 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2072
2073 coro->prio = 0;
2074
2075 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2076 api_trace (aTHX_ coro_current, 0);
2077
2078 frame->prepare = prepare_schedule;
2079 av_push (av_async_pool, SvREFCNT_inc (hv));
2080 }
2081 }
2082 else
2083 {
2084 /* first iteration, simply fall through */
2085 frame->prepare = prepare_nop;
2086 }
2087
2088 frame->check = slf_check_pool_handler;
2089 frame->data = (void *)coro;
2090}
2091
2092/*****************************************************************************/
2093/* rouse callback */
2094
2095#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2096
2097static void
2098coro_rouse_callback (pTHX_ CV *cv)
2099{
2100 dXSARGS;
2101 SV *data = (SV *)S_GENSUB_ARG;
2102
2103 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2104 {
2105 /* first call, set args */
2106 SV *coro = SvRV (data);
2107 AV *av = newAV ();
2108
2109 SvRV_set (data, (SV *)av);
2110
2111 /* better take a full copy of the arguments */
2112 while (items--)
2113 av_store (av, items, newSVsv (ST (items)));
2114
2115 api_ready (aTHX_ coro);
2116 SvREFCNT_dec (coro);
2117 }
2118
2119 XSRETURN_EMPTY;
2120}
2121
2122static int
2123slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2124{
2125 SV *data = (SV *)frame->data;
2126
2127 if (CORO_THROW)
2128 return 0;
2129
2130 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2131 return 1;
2132
2133 /* now push all results on the stack */
2134 {
2135 dSP;
2136 AV *av = (AV *)SvRV (data);
2137 int i;
2138
2139 EXTEND (SP, AvFILLp (av) + 1);
2140 for (i = 0; i <= AvFILLp (av); ++i)
2141 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2142
2143 /* we have stolen the elements, so set length to zero and free */
2144 AvFILLp (av) = -1;
2145 av_undef (av);
2146
2147 PUTBACK;
2148 }
1728 2149
1729 return 0; 2150 return 0;
1730} 2151}
1731 2152
1732static MGVTBL coro_gensub_vtbl = { 2153static void
1733 0, 0, 0, 0, 2154slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1734 coro_gensub_free 2155{
1735}; 2156 SV *cb;
1736#endif 2157
2158 if (items)
2159 cb = arg [0];
2160 else
2161 {
2162 struct coro *coro = SvSTATE_current;
2163
2164 if (!coro->rouse_cb)
2165 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2166
2167 cb = sv_2mortal (coro->rouse_cb);
2168 coro->rouse_cb = 0;
2169 }
2170
2171 if (!SvROK (cb)
2172 || SvTYPE (SvRV (cb)) != SVt_PVCV
2173 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2174 croak ("Coro::rouse_wait called with illegal callback argument,");
2175
2176 {
2177 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2178 SV *data = (SV *)S_GENSUB_ARG;
2179
2180 frame->data = (void *)data;
2181 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2182 frame->check = slf_check_rouse_wait;
2183 }
2184}
2185
2186static SV *
2187coro_new_rouse_cb (pTHX)
2188{
2189 HV *hv = (HV *)SvRV (coro_current);
2190 struct coro *coro = SvSTATE_hv (hv);
2191 SV *data = newRV_inc ((SV *)hv);
2192 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2193
2194 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2195 SvREFCNT_dec (data); /* magicext increases the refcount */
2196
2197 SvREFCNT_dec (coro->rouse_cb);
2198 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2199
2200 return cb;
2201}
2202
2203/*****************************************************************************/
2204/* schedule-like-function opcode (SLF) */
2205
2206static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2207static const CV *slf_cv;
2208static SV **slf_argv;
2209static int slf_argc, slf_arga; /* count, allocated */
2210static I32 slf_ax; /* top of stack, for restore */
2211
2212/* this restores the stack in the case we patched the entersub, to */
2213/* recreate the stack frame as perl will on following calls */
2214/* since entersub cleared the stack */
2215static OP *
2216pp_restore (pTHX)
2217{
2218 int i;
2219 SV **SP = PL_stack_base + slf_ax;
2220
2221 PUSHMARK (SP);
2222
2223 EXTEND (SP, slf_argc + 1);
2224
2225 for (i = 0; i < slf_argc; ++i)
2226 PUSHs (sv_2mortal (slf_argv [i]));
2227
2228 PUSHs ((SV *)CvGV (slf_cv));
2229
2230 RETURNOP (slf_restore.op_first);
2231}
2232
2233static void
2234slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2235{
2236 SV **arg = (SV **)slf_frame.data;
2237
2238 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2239}
2240
2241static void
2242slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2243{
2244 if (items != 2)
2245 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2246
2247 frame->prepare = slf_prepare_transfer;
2248 frame->check = slf_check_nop;
2249 frame->data = (void *)arg; /* let's hope it will stay valid */
2250}
2251
2252static void
2253slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2254{
2255 frame->prepare = prepare_schedule;
2256 frame->check = slf_check_nop;
2257}
2258
2259static void
2260slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2261{
2262 struct coro *next = (struct coro *)slf_frame.data;
2263
2264 SvREFCNT_inc_NN (next->hv);
2265 prepare_schedule_to (aTHX_ ta, next);
2266}
2267
2268static void
2269slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2270{
2271 if (!items)
2272 croak ("Coro::schedule_to expects a coroutine argument, caught");
2273
2274 frame->data = (void *)SvSTATE (arg [0]);
2275 frame->prepare = slf_prepare_schedule_to;
2276 frame->check = slf_check_nop;
2277}
2278
2279static void
2280slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2281{
2282 api_ready (aTHX_ SvRV (coro_current));
2283
2284 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2285}
2286
2287static void
2288slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2289{
2290 frame->prepare = prepare_cede;
2291 frame->check = slf_check_nop;
2292}
2293
2294static void
2295slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2296{
2297 frame->prepare = prepare_cede_notself;
2298 frame->check = slf_check_nop;
2299}
2300
2301/*
2302 * these not obviously related functions are all rolled into one
2303 * function to increase chances that they all will call transfer with the same
2304 * stack offset
2305 * SLF stands for "schedule-like-function".
2306 */
2307static OP *
2308pp_slf (pTHX)
2309{
2310 I32 checkmark; /* mark SP to see how many elements check has pushed */
2311
2312 /* set up the slf frame, unless it has already been set-up */
2313 /* the latter happens when a new coro has been started */
2314 /* or when a new cctx was attached to an existing coroutine */
2315 if (expect_true (!slf_frame.prepare))
2316 {
2317 /* first iteration */
2318 dSP;
2319 SV **arg = PL_stack_base + TOPMARK + 1;
2320 int items = SP - arg; /* args without function object */
2321 SV *gv = *sp;
2322
2323 /* do a quick consistency check on the "function" object, and if it isn't */
2324 /* for us, divert to the real entersub */
2325 if (SvTYPE (gv) != SVt_PVGV
2326 || !GvCV (gv)
2327 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2328 return PL_ppaddr[OP_ENTERSUB](aTHX);
2329
2330 if (!(PL_op->op_flags & OPf_STACKED))
2331 {
2332 /* ampersand-form of call, use @_ instead of stack */
2333 AV *av = GvAV (PL_defgv);
2334 arg = AvARRAY (av);
2335 items = AvFILLp (av) + 1;
2336 }
2337
2338 /* now call the init function, which needs to set up slf_frame */
2339 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2340 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2341
2342 /* pop args */
2343 SP = PL_stack_base + POPMARK;
2344
2345 PUTBACK;
2346 }
2347
2348 /* now that we have a slf_frame, interpret it! */
2349 /* we use a callback system not to make the code needlessly */
2350 /* complicated, but so we can run multiple perl coros from one cctx */
2351
2352 do
2353 {
2354 struct coro_transfer_args ta;
2355
2356 slf_frame.prepare (aTHX_ &ta);
2357 TRANSFER (ta, 0);
2358
2359 checkmark = PL_stack_sp - PL_stack_base;
2360 }
2361 while (slf_frame.check (aTHX_ &slf_frame));
2362
2363 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2364
2365 /* exception handling */
2366 if (expect_false (CORO_THROW))
2367 {
2368 SV *exception = sv_2mortal (CORO_THROW);
2369
2370 CORO_THROW = 0;
2371 sv_setsv (ERRSV, exception);
2372 croak (0);
2373 }
2374
2375 /* return value handling - mostly like entersub */
2376 /* make sure we put something on the stack in scalar context */
2377 if (GIMME_V == G_SCALAR)
2378 {
2379 dSP;
2380 SV **bot = PL_stack_base + checkmark;
2381
2382 if (sp == bot) /* too few, push undef */
2383 bot [1] = &PL_sv_undef;
2384 else if (sp != bot + 1) /* too many, take last one */
2385 bot [1] = *sp;
2386
2387 SP = bot + 1;
2388
2389 PUTBACK;
2390 }
2391
2392 return NORMAL;
2393}
2394
2395static void
2396api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2397{
2398 int i;
2399 SV **arg = PL_stack_base + ax;
2400 int items = PL_stack_sp - arg + 1;
2401
2402 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2403
2404 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2405 && PL_op->op_ppaddr != pp_slf)
2406 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2407
2408 CvFLAGS (cv) |= CVf_SLF;
2409 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2410 slf_cv = cv;
2411
2412 /* we patch the op, and then re-run the whole call */
2413 /* we have to put the same argument on the stack for this to work */
2414 /* and this will be done by pp_restore */
2415 slf_restore.op_next = (OP *)&slf_restore;
2416 slf_restore.op_type = OP_CUSTOM;
2417 slf_restore.op_ppaddr = pp_restore;
2418 slf_restore.op_first = PL_op;
2419
2420 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2421
2422 if (PL_op->op_flags & OPf_STACKED)
2423 {
2424 if (items > slf_arga)
2425 {
2426 slf_arga = items;
2427 Safefree (slf_argv);
2428 New (0, slf_argv, slf_arga, SV *);
2429 }
2430
2431 slf_argc = items;
2432
2433 for (i = 0; i < items; ++i)
2434 slf_argv [i] = SvREFCNT_inc (arg [i]);
2435 }
2436 else
2437 slf_argc = 0;
2438
2439 PL_op->op_ppaddr = pp_slf;
2440 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2441
2442 PL_op = (OP *)&slf_restore;
2443}
2444
2445/*****************************************************************************/
2446/* dynamic wind */
2447
2448static void
2449on_enterleave_call (pTHX_ SV *cb)
2450{
2451 dSP;
2452
2453 PUSHSTACK;
2454
2455 PUSHMARK (SP);
2456 PUTBACK;
2457 call_sv (cb, G_VOID | G_DISCARD);
2458 SPAGAIN;
2459
2460 POPSTACK;
2461}
2462
2463static SV *
2464coro_avp_pop_and_free (pTHX_ AV **avp)
2465{
2466 AV *av = *avp;
2467 SV *res = av_pop (av);
2468
2469 if (AvFILLp (av) < 0)
2470 {
2471 *avp = 0;
2472 SvREFCNT_dec (av);
2473 }
2474
2475 return res;
2476}
2477
2478static void
2479coro_pop_on_enter (pTHX_ void *coro)
2480{
2481 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2482 SvREFCNT_dec (cb);
2483}
2484
2485static void
2486coro_pop_on_leave (pTHX_ void *coro)
2487{
2488 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2489 on_enterleave_call (aTHX_ sv_2mortal (cb));
2490}
1737 2491
1738/*****************************************************************************/ 2492/*****************************************************************************/
1739/* PerlIO::cede */ 2493/* PerlIO::cede */
1740 2494
1741typedef struct 2495typedef struct
… …
1769 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2523 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1770 double now = nvtime (); 2524 double now = nvtime ();
1771 2525
1772 if (now >= self->next) 2526 if (now >= self->next)
1773 { 2527 {
1774 api_cede (); 2528 api_cede (aTHX);
1775 self->next = now + self->every; 2529 self->next = now + self->every;
1776 } 2530 }
1777 2531
1778 return PerlIOBuf_flush (aTHX_ f); 2532 return PerlIOBuf_flush (aTHX_ f);
1779} 2533}
… …
1809 PerlIOBuf_get_cnt, 2563 PerlIOBuf_get_cnt,
1810 PerlIOBuf_set_ptrcnt, 2564 PerlIOBuf_set_ptrcnt,
1811}; 2565};
1812 2566
1813/*****************************************************************************/ 2567/*****************************************************************************/
2568/* Coro::Semaphore & Coro::Signal */
1814 2569
1815static const CV *ssl_cv; /* for quick consistency check */
1816
1817static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1818static SV *ssl_arg0;
1819static SV *ssl_arg1;
1820
1821/* this restores the stack in the case we patched the entersub, to */
1822/* recreate the stack frame as perl will on following calls */
1823/* since entersub cleared the stack */
1824static OP * 2570static SV *
1825pp_restore (pTHX) 2571coro_waitarray_new (pTHX_ int count)
1826{ 2572{
2573 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2574 AV *av = newAV ();
2575 SV **ary;
2576
2577 /* unfortunately, building manually saves memory */
2578 Newx (ary, 2, SV *);
2579 AvALLOC (av) = ary;
2580#if PERL_VERSION_ATLEAST (5,10,0)
2581 AvARRAY (av) = ary;
2582#else
2583 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2584 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2585 SvPVX ((SV *)av) = (char *)ary;
2586#endif
2587 AvMAX (av) = 1;
2588 AvFILLp (av) = 0;
2589 ary [0] = newSViv (count);
2590
2591 return newRV_noinc ((SV *)av);
2592}
2593
2594/* semaphore */
2595
2596static void
2597coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2598{
2599 SV *count_sv = AvARRAY (av)[0];
2600 IV count = SvIVX (count_sv);
2601
2602 count += adjust;
2603 SvIVX (count_sv) = count;
2604
2605 /* now wake up as many waiters as are expected to lock */
2606 while (count > 0 && AvFILLp (av) > 0)
2607 {
2608 SV *cb;
2609
2610 /* swap first two elements so we can shift a waiter */
2611 AvARRAY (av)[0] = AvARRAY (av)[1];
2612 AvARRAY (av)[1] = count_sv;
2613 cb = av_shift (av);
2614
2615 if (SvOBJECT (cb))
2616 {
2617 api_ready (aTHX_ cb);
2618 --count;
2619 }
2620 else if (SvTYPE (cb) == SVt_PVCV)
2621 {
2622 dSP;
2623 PUSHMARK (SP);
2624 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2625 PUTBACK;
2626 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2627 }
2628
2629 SvREFCNT_dec (cb);
2630 }
2631}
2632
2633static void
2634coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2635{
2636 /* call $sem->adjust (0) to possibly wake up some other waiters */
2637 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2638}
2639
2640static int
2641slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2642{
2643 AV *av = (AV *)frame->data;
2644 SV *count_sv = AvARRAY (av)[0];
2645
2646 /* if we are about to throw, don't actually acquire the lock, just throw */
2647 if (CORO_THROW)
2648 return 0;
2649 else if (SvIVX (count_sv) > 0)
2650 {
2651 SvSTATE_current->on_destroy = 0;
2652
2653 if (acquire)
2654 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2655 else
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 return 0;
2659 }
2660 else
2661 {
2662 int i;
2663 /* if we were woken up but can't down, we look through the whole */
2664 /* waiters list and only add us if we aren't in there already */
2665 /* this avoids some degenerate memory usage cases */
2666
2667 for (i = 1; i <= AvFILLp (av); ++i)
2668 if (AvARRAY (av)[i] == SvRV (coro_current))
2669 return 1;
2670
2671 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2672 return 1;
2673 }
2674}
2675
2676static int
2677slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2678{
2679 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2680}
2681
2682static int
2683slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2684{
2685 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2686}
2687
2688static void
2689slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2690{
2691 AV *av = (AV *)SvRV (arg [0]);
2692
2693 if (SvIVX (AvARRAY (av)[0]) > 0)
2694 {
2695 frame->data = (void *)av;
2696 frame->prepare = prepare_nop;
2697 }
2698 else
2699 {
2700 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2701
2702 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2703 frame->prepare = prepare_schedule;
2704
2705 /* to avoid race conditions when a woken-up coro gets terminated */
2706 /* we arrange for a temporary on_destroy that calls adjust (0) */
2707 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2708 }
2709}
2710
2711static void
2712slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2713{
2714 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2715 frame->check = slf_check_semaphore_down;
2716}
2717
2718static void
2719slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2720{
2721 if (items >= 2)
2722 {
2723 /* callback form */
2724 AV *av = (AV *)SvRV (arg [0]);
2725 SV *cb_cv = s_get_cv_croak (arg [1]);
2726
2727 av_push (av, SvREFCNT_inc_NN (cb_cv));
2728
2729 if (SvIVX (AvARRAY (av)[0]) > 0)
2730 coro_semaphore_adjust (aTHX_ av, 0);
2731
2732 frame->prepare = prepare_nop;
2733 frame->check = slf_check_nop;
2734 }
2735 else
2736 {
2737 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2738 frame->check = slf_check_semaphore_wait;
2739 }
2740}
2741
2742/* signal */
2743
2744static void
2745coro_signal_wake (pTHX_ AV *av, int count)
2746{
2747 SvIVX (AvARRAY (av)[0]) = 0;
2748
2749 /* now signal count waiters */
2750 while (count > 0 && AvFILLp (av) > 0)
2751 {
2752 SV *cb;
2753
2754 /* swap first two elements so we can shift a waiter */
2755 cb = AvARRAY (av)[0];
2756 AvARRAY (av)[0] = AvARRAY (av)[1];
2757 AvARRAY (av)[1] = cb;
2758
2759 cb = av_shift (av);
2760
2761 if (SvTYPE (cb) == SVt_PVCV)
2762 {
2763 dSP;
2764 PUSHMARK (SP);
2765 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2766 PUTBACK;
2767 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2768 }
2769 else
2770 {
2771 api_ready (aTHX_ cb);
2772 sv_setiv (cb, 0); /* signal waiter */
2773 }
2774
2775 SvREFCNT_dec (cb);
2776
2777 --count;
2778 }
2779}
2780
2781static int
2782slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2783{
2784 /* if we are about to throw, also stop waiting */
2785 return SvROK ((SV *)frame->data) && !CORO_THROW;
2786}
2787
2788static void
2789slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2790{
2791 AV *av = (AV *)SvRV (arg [0]);
2792
2793 if (items >= 2)
2794 {
2795 SV *cb_cv = s_get_cv_croak (arg [1]);
2796 av_push (av, SvREFCNT_inc_NN (cb_cv));
2797
2798 if (SvIVX (AvARRAY (av)[0]))
2799 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2800
2801 frame->prepare = prepare_nop;
2802 frame->check = slf_check_nop;
2803 }
2804 else if (SvIVX (AvARRAY (av)[0]))
2805 {
2806 SvIVX (AvARRAY (av)[0]) = 0;
2807 frame->prepare = prepare_nop;
2808 frame->check = slf_check_nop;
2809 }
2810 else
2811 {
2812 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2813
2814 av_push (av, waiter);
2815
2816 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2817 frame->prepare = prepare_schedule;
2818 frame->check = slf_check_signal_wait;
2819 }
2820}
2821
2822/*****************************************************************************/
2823/* Coro::AIO */
2824
2825#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2826
2827/* helper storage struct */
2828struct io_state
2829{
2830 int errorno;
2831 I32 laststype; /* U16 in 5.10.0 */
2832 int laststatval;
2833 Stat_t statcache;
2834};
2835
2836static void
2837coro_aio_callback (pTHX_ CV *cv)
2838{
2839 dXSARGS;
2840 AV *state = (AV *)S_GENSUB_ARG;
2841 SV *coro = av_pop (state);
2842 SV *data_sv = newSV (sizeof (struct io_state));
2843
2844 av_extend (state, items - 1);
2845
2846 sv_upgrade (data_sv, SVt_PV);
2847 SvCUR_set (data_sv, sizeof (struct io_state));
2848 SvPOK_only (data_sv);
2849
2850 {
2851 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2852
2853 data->errorno = errno;
2854 data->laststype = PL_laststype;
2855 data->laststatval = PL_laststatval;
2856 data->statcache = PL_statcache;
2857 }
2858
2859 /* now build the result vector out of all the parameters and the data_sv */
2860 {
2861 int i;
2862
2863 for (i = 0; i < items; ++i)
2864 av_push (state, SvREFCNT_inc_NN (ST (i)));
2865 }
2866
2867 av_push (state, data_sv);
2868
2869 api_ready (aTHX_ coro);
2870 SvREFCNT_dec (coro);
2871 SvREFCNT_dec ((AV *)state);
2872}
2873
2874static int
2875slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2876{
2877 AV *state = (AV *)frame->data;
2878
2879 /* if we are about to throw, return early */
2880 /* this does not cancel the aio request, but at least */
2881 /* it quickly returns */
2882 if (CORO_THROW)
2883 return 0;
2884
2885 /* one element that is an RV? repeat! */
2886 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2887 return 1;
2888
2889 /* restore status */
2890 {
2891 SV *data_sv = av_pop (state);
2892 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2893
2894 errno = data->errorno;
2895 PL_laststype = data->laststype;
2896 PL_laststatval = data->laststatval;
2897 PL_statcache = data->statcache;
2898
2899 SvREFCNT_dec (data_sv);
2900 }
2901
2902 /* push result values */
2903 {
1827 dSP; 2904 dSP;
2905 int i;
1828 2906
2907 EXTEND (SP, AvFILLp (state) + 1);
2908 for (i = 0; i <= AvFILLp (state); ++i)
2909 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2910
2911 PUTBACK;
2912 }
2913
2914 return 0;
2915}
2916
2917static void
2918slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2919{
2920 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2921 SV *coro_hv = SvRV (coro_current);
2922 struct coro *coro = SvSTATE_hv (coro_hv);
2923
2924 /* put our coroutine id on the state arg */
2925 av_push (state, SvREFCNT_inc_NN (coro_hv));
2926
2927 /* first see whether we have a non-zero priority and set it as AIO prio */
2928 if (coro->prio)
2929 {
2930 dSP;
2931
2932 static SV *prio_cv;
2933 static SV *prio_sv;
2934
2935 if (expect_false (!prio_cv))
2936 {
2937 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2938 prio_sv = newSViv (0);
2939 }
2940
2941 PUSHMARK (SP);
2942 sv_setiv (prio_sv, coro->prio);
2943 XPUSHs (prio_sv);
2944
2945 PUTBACK;
2946 call_sv (prio_cv, G_VOID | G_DISCARD);
2947 }
2948
2949 /* now call the original request */
2950 {
2951 dSP;
2952 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2953 int i;
2954
1829 PUSHMARK (SP); 2955 PUSHMARK (SP);
1830 2956
1831 EXTEND (SP, 3); 2957 /* first push all args to the stack */
1832 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2958 EXTEND (SP, items + 1);
1833 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1834 PUSHs ((SV *)CvGV (ssl_cv));
1835 2959
1836 RETURNOP (ssl_restore.op_first); 2960 for (i = 0; i < items; ++i)
1837} 2961 PUSHs (arg [i]);
1838 2962
1839/* declare prototype */ 2963 /* now push the callback closure */
1840XS(XS_Coro__State__set_stacklevel); 2964 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1841 2965
1842static OP * 2966 /* now call the AIO function - we assume our request is uncancelable */
1843pp_set_stacklevel (pTHX)
1844{
1845 dSP;
1846 struct transfer_args ta;
1847 SV **arg = PL_stack_base + TOPMARK + 1;
1848 int items = SP - arg; /* args without function object */
1849
1850 /* do a quick consistency check on the "function" object, and if it isn't */
1851 /* for us, divert to the real entersub */
1852 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1853 return PL_ppaddr[OP_ENTERSUB](aTHX);
1854
1855 /* pop args */
1856 SP = PL_stack_base + POPMARK;
1857
1858 if (!(PL_op->op_flags & OPf_STACKED))
1859 {
1860 /* ampersand-form of call, use @_ instead of stack */
1861 AV *av = GvAV (PL_defgv);
1862 arg = AvARRAY (av);
1863 items = AvFILLp (av) + 1;
1864 }
1865
1866 PUTBACK; 2967 PUTBACK;
1867 switch (PL_op->op_private & 7) 2968 call_sv ((SV *)req, G_VOID | G_DISCARD);
1868 { 2969 }
1869 case 0:
1870 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1871 break;
1872 2970
1873 case 1: 2971 /* now that the requets is going, we loop toll we have a result */
1874 if (items != 2) 2972 frame->data = (void *)state;
1875 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2973 frame->prepare = prepare_schedule;
2974 frame->check = slf_check_aio_req;
2975}
1876 2976
1877 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2977static void
1878 break; 2978coro_aio_req_xs (pTHX_ CV *cv)
2979{
2980 dXSARGS;
1879 2981
1880 case 2: 2982 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1881 prepare_schedule (aTHX_ &ta);
1882 break;
1883 2983
1884 case 3: 2984 XSRETURN_EMPTY;
1885 prepare_cede (aTHX_ &ta); 2985}
1886 break;
1887 2986
1888 case 4: 2987/*****************************************************************************/
1889 if (!prepare_cede_notself (aTHX_ &ta))
1890 RETURN;
1891 2988
1892 break; 2989#if CORO_CLONE
2990# include "clone.c"
2991#endif
2992
2993/*****************************************************************************/
2994
2995static SV *
2996coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2997{
2998 SV *coro_sv;
2999 struct coro *coro;
3000 MAGIC *mg;
3001 HV *hv;
3002 SV *cb;
3003 int i;
3004
3005 if (argc > 0)
1893 } 3006 {
3007 cb = s_get_cv_croak (argv [0]);
1894 3008
1895 TRANSFER (ta, 0); 3009 if (!is_coro)
1896 SPAGAIN; 3010 {
3011 if (CvISXSUB (cb))
3012 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
1897 3013
1898skip: 3014 if (!CvROOT (cb))
3015 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3016 }
3017 }
1899 3018
1900 RETURN; 3019 Newz (0, coro, 1, struct coro);
3020 coro->args = newAV ();
3021 coro->flags = CF_NEW;
3022
3023 if (coro_first) coro_first->prev = coro;
3024 coro->next = coro_first;
3025 coro_first = coro;
3026
3027 coro->hv = hv = newHV ();
3028 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3029 mg->mg_flags |= MGf_DUP;
3030 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3031
3032 if (argc > 0)
3033 {
3034 av_extend (coro->args, argc + is_coro - 1);
3035
3036 if (is_coro)
3037 {
3038 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3039 cb = (SV *)cv_coro_run;
3040 }
3041
3042 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3043
3044 for (i = 1; i < argc; i++)
3045 av_push (coro->args, newSVsv (argv [i]));
3046 }
3047
3048 return coro_sv;
1901} 3049}
1902 3050
1903MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3051MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1904 3052
1905PROTOTYPES: DISABLE 3053PROTOTYPES: DISABLE
1906 3054
1907# these not obviously related functions are all rolled into the same xs
1908# function to increase chances that they all will call transfer with the same
1909# stack offset
1910void
1911_set_stacklevel (...)
1912 ALIAS:
1913 Coro::State::transfer = 1
1914 Coro::schedule = 2
1915 Coro::cede = 3
1916 Coro::cede_notself = 4
1917 CODE:
1918{
1919 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1920
1921 /* we patch the op, and then re-run the whole call */
1922 /* we have to put some dummy argument on the stack for this to work */
1923 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1924 ssl_restore.op_next = (OP *)&ssl_restore;
1925 ssl_restore.op_type = OP_NULL;
1926 ssl_restore.op_ppaddr = pp_restore;
1927 ssl_restore.op_first = PL_op;
1928
1929 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1930 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1931
1932 PL_op->op_ppaddr = pp_set_stacklevel;
1933 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1934
1935 PL_op = (OP *)&ssl_restore;
1936}
1937
1938BOOT: 3055BOOT:
1939{ 3056{
1940#ifdef USE_ITHREADS 3057#ifdef USE_ITHREADS
1941 MUTEX_INIT (&coro_lock);
1942# if CORO_PTHREAD 3058# if CORO_PTHREAD
1943 coro_thx = PERL_GET_CONTEXT; 3059 coro_thx = PERL_GET_CONTEXT;
1944# endif 3060# endif
1945#endif 3061#endif
1946 BOOT_PAGESIZE; 3062 BOOT_PAGESIZE;
1947 3063
1948 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 3064 cctx_current = cctx_new_empty ();
1949 3065
1950 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3066 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1951 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3067 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1952 3068
1953 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3069 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1969 main_top_env = PL_top_env; 3085 main_top_env = PL_top_env;
1970 3086
1971 while (main_top_env->je_prev) 3087 while (main_top_env->je_prev)
1972 main_top_env = main_top_env->je_prev; 3088 main_top_env = main_top_env->je_prev;
1973 3089
3090 {
3091 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3092
3093 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3094 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3095
3096 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3097 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3098 }
3099
1974 coroapi.ver = CORO_API_VERSION; 3100 coroapi.ver = CORO_API_VERSION;
1975 coroapi.rev = CORO_API_REVISION; 3101 coroapi.rev = CORO_API_REVISION;
3102
1976 coroapi.transfer = api_transfer; 3103 coroapi.transfer = api_transfer;
3104
3105 coroapi.sv_state = SvSTATE_;
3106 coroapi.execute_slf = api_execute_slf;
3107 coroapi.prepare_nop = prepare_nop;
3108 coroapi.prepare_schedule = prepare_schedule;
3109 coroapi.prepare_cede = prepare_cede;
3110 coroapi.prepare_cede_notself = prepare_cede_notself;
1977 3111
1978 { 3112 {
1979 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3113 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1980 3114
1981 if (!svp) croak ("Time::HiRes is required"); 3115 if (!svp) croak ("Time::HiRes is required");
1982 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3116 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1983 3117
1984 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3118 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3119
3120 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3121 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
1985 } 3122 }
1986 3123
1987 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3124 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1988} 3125}
1989 3126
1990SV * 3127SV *
1991new (char *klass, ...) 3128new (SV *klass, ...)
3129 ALIAS:
3130 Coro::new = 1
1992 CODE: 3131 CODE:
1993{ 3132 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1994 struct coro *coro; 3133 OUTPUT:
1995 MAGIC *mg;
1996 HV *hv;
1997 int i;
1998
1999 Newz (0, coro, 1, struct coro);
2000 coro->args = newAV ();
2001 coro->flags = CF_NEW;
2002
2003 if (coro_first) coro_first->prev = coro;
2004 coro->next = coro_first;
2005 coro_first = coro;
2006
2007 coro->hv = hv = newHV ();
2008 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2009 mg->mg_flags |= MGf_DUP;
2010 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2011
2012 av_extend (coro->args, items - 1);
2013 for (i = 1; i < items; i++)
2014 av_push (coro->args, newSVsv (ST (i)));
2015}
2016 OUTPUT:
2017 RETVAL 3134 RETVAL
3135
3136void
3137transfer (...)
3138 PROTOTYPE: $$
3139 CODE:
3140 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2018 3141
2019bool 3142bool
2020_destroy (SV *coro_sv) 3143_destroy (SV *coro_sv)
2021 CODE: 3144 CODE:
2022 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3145 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2027_exit (int code) 3150_exit (int code)
2028 PROTOTYPE: $ 3151 PROTOTYPE: $
2029 CODE: 3152 CODE:
2030 _exit (code); 3153 _exit (code);
2031 3154
3155SV *
3156clone (Coro::State coro)
3157 CODE:
3158{
3159#if CORO_CLONE
3160 struct coro *ncoro = coro_clone (aTHX_ coro);
3161 MAGIC *mg;
3162 /* TODO: too much duplication */
3163 ncoro->hv = newHV ();
3164 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3165 mg->mg_flags |= MGf_DUP;
3166 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3167#else
3168 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3169#endif
3170}
3171 OUTPUT:
3172 RETVAL
3173
2032int 3174int
2033cctx_stacksize (int new_stacksize = 0) 3175cctx_stacksize (int new_stacksize = 0)
3176 PROTOTYPE: ;$
2034 CODE: 3177 CODE:
2035 RETVAL = cctx_stacksize; 3178 RETVAL = cctx_stacksize;
2036 if (new_stacksize) 3179 if (new_stacksize)
2037 { 3180 {
2038 cctx_stacksize = new_stacksize; 3181 cctx_stacksize = new_stacksize;
… …
2041 OUTPUT: 3184 OUTPUT:
2042 RETVAL 3185 RETVAL
2043 3186
2044int 3187int
2045cctx_max_idle (int max_idle = 0) 3188cctx_max_idle (int max_idle = 0)
3189 PROTOTYPE: ;$
2046 CODE: 3190 CODE:
2047 RETVAL = cctx_max_idle; 3191 RETVAL = cctx_max_idle;
2048 if (max_idle > 1) 3192 if (max_idle > 1)
2049 cctx_max_idle = max_idle; 3193 cctx_max_idle = max_idle;
2050 OUTPUT: 3194 OUTPUT:
2051 RETVAL 3195 RETVAL
2052 3196
2053int 3197int
2054cctx_count () 3198cctx_count ()
3199 PROTOTYPE:
2055 CODE: 3200 CODE:
2056 RETVAL = cctx_count; 3201 RETVAL = cctx_count;
2057 OUTPUT: 3202 OUTPUT:
2058 RETVAL 3203 RETVAL
2059 3204
2060int 3205int
2061cctx_idle () 3206cctx_idle ()
3207 PROTOTYPE:
2062 CODE: 3208 CODE:
2063 RETVAL = cctx_idle; 3209 RETVAL = cctx_idle;
2064 OUTPUT: 3210 OUTPUT:
2065 RETVAL 3211 RETVAL
2066 3212
2067void 3213void
2068list () 3214list ()
3215 PROTOTYPE:
2069 PPCODE: 3216 PPCODE:
2070{ 3217{
2071 struct coro *coro; 3218 struct coro *coro;
2072 for (coro = coro_first; coro; coro = coro->next) 3219 for (coro = coro_first; coro; coro = coro->next)
2073 if (coro->hv) 3220 if (coro->hv)
… …
2080 eval = 1 3227 eval = 1
2081 CODE: 3228 CODE:
2082{ 3229{
2083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3230 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2084 { 3231 {
2085 struct coro temp; 3232 struct coro *current = SvSTATE_current;
2086 3233
2087 if (!(coro->flags & CF_RUNNING)) 3234 if (current != coro)
2088 { 3235 {
2089 PUTBACK; 3236 PUTBACK;
2090 save_perl (aTHX_ &temp); 3237 save_perl (aTHX_ current);
2091 load_perl (aTHX_ coro); 3238 load_perl (aTHX_ coro);
3239 SPAGAIN;
2092 } 3240 }
2093 3241
2094 {
2095 dSP;
2096 ENTER;
2097 SAVETMPS;
2098 PUTBACK;
2099 PUSHSTACK; 3242 PUSHSTACK;
3243
2100 PUSHMARK (SP); 3244 PUSHMARK (SP);
3245 PUTBACK;
2101 3246
2102 if (ix) 3247 if (ix)
2103 eval_sv (coderef, 0); 3248 eval_sv (coderef, 0);
2104 else 3249 else
2105 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3250 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2106 3251
2107 POPSTACK; 3252 POPSTACK;
2108 SPAGAIN; 3253 SPAGAIN;
2109 FREETMPS;
2110 LEAVE;
2111 PUTBACK;
2112 }
2113 3254
2114 if (!(coro->flags & CF_RUNNING)) 3255 if (current != coro)
2115 { 3256 {
3257 PUTBACK;
2116 save_perl (aTHX_ coro); 3258 save_perl (aTHX_ coro);
2117 load_perl (aTHX_ &temp); 3259 load_perl (aTHX_ current);
2118 SPAGAIN; 3260 SPAGAIN;
2119 } 3261 }
2120 } 3262 }
2121} 3263}
2122 3264
… …
2126 ALIAS: 3268 ALIAS:
2127 is_ready = CF_READY 3269 is_ready = CF_READY
2128 is_running = CF_RUNNING 3270 is_running = CF_RUNNING
2129 is_new = CF_NEW 3271 is_new = CF_NEW
2130 is_destroyed = CF_DESTROYED 3272 is_destroyed = CF_DESTROYED
3273 is_suspended = CF_SUSPENDED
2131 CODE: 3274 CODE:
2132 RETVAL = boolSV (coro->flags & ix); 3275 RETVAL = boolSV (coro->flags & ix);
2133 OUTPUT: 3276 OUTPUT:
2134 RETVAL 3277 RETVAL
2135 3278
2136void 3279void
2137throw (Coro::State self, SV *throw = &PL_sv_undef) 3280throw (Coro::State self, SV *exception = &PL_sv_undef)
2138 PROTOTYPE: $;$ 3281 PROTOTYPE: $;$
2139 CODE: 3282 CODE:
3283{
3284 struct coro *current = SvSTATE_current;
3285 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2140 SvREFCNT_dec (self->throw); 3286 SvREFCNT_dec (*exceptionp);
2141 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3287 SvGETMAGIC (exception);
3288 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3289}
2142 3290
2143void 3291void
2144api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3292api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3293 PROTOTYPE: $;$
3294 C_ARGS: aTHX_ coro, flags
2145 3295
2146SV * 3296SV *
2147has_cctx (Coro::State coro) 3297has_cctx (Coro::State coro)
2148 PROTOTYPE: $ 3298 PROTOTYPE: $
2149 CODE: 3299 CODE:
2150 RETVAL = boolSV (!!coro->cctx); 3300 /* maybe manage the running flag differently */
3301 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2151 OUTPUT: 3302 OUTPUT:
2152 RETVAL 3303 RETVAL
2153 3304
2154int 3305int
2155is_traced (Coro::State coro) 3306is_traced (Coro::State coro)
… …
2173 OUTPUT: 3324 OUTPUT:
2174 RETVAL 3325 RETVAL
2175 3326
2176void 3327void
2177force_cctx () 3328force_cctx ()
3329 PROTOTYPE:
2178 CODE: 3330 CODE:
2179 struct coro *coro = SvSTATE (coro_current);
2180 coro->cctx->idle_sp = 0; 3331 cctx_current->idle_sp = 0;
2181 3332
2182void 3333void
2183swap_defsv (Coro::State self) 3334swap_defsv (Coro::State self)
2184 PROTOTYPE: $ 3335 PROTOTYPE: $
2185 ALIAS: 3336 ALIAS:
2186 swap_defav = 1 3337 swap_defav = 1
2187 CODE: 3338 CODE:
2188 if (!self->slot) 3339 if (!self->slot)
2189 croak ("cannot swap state with coroutine that has no saved state"); 3340 croak ("cannot swap state with coroutine that has no saved state,");
2190 else 3341 else
2191 { 3342 {
2192 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3343 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2193 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3344 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2194 3345
2195 SV *tmp = *src; *src = *dst; *dst = tmp; 3346 SV *tmp = *src; *src = *dst; *dst = tmp;
2196 } 3347 }
2197 3348
3349void
3350cancel (Coro::State self)
3351 CODE:
3352 coro_state_destroy (aTHX_ self);
3353 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3354
3355
3356SV *
3357enable_times (int enabled = enable_times)
3358 CODE:
3359{
3360 RETVAL = boolSV (enable_times);
3361
3362 if (enabled != enable_times)
3363 {
3364 enable_times = enabled;
3365
3366 coro_times_update ();
3367 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3368 }
3369}
3370 OUTPUT:
3371 RETVAL
3372
3373void
3374times (Coro::State self)
3375 PPCODE:
3376{
3377 struct coro *current = SvSTATE (coro_current);
3378
3379 if (expect_false (current == self))
3380 {
3381 coro_times_update ();
3382 coro_times_add (SvSTATE (coro_current));
3383 }
3384
3385 EXTEND (SP, 2);
3386 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3387 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3388
3389 if (expect_false (current == self))
3390 coro_times_sub (SvSTATE (coro_current));
3391}
3392
3393void
3394swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3395 CODE:
3396{
3397 struct coro *current = SvSTATE_current;
3398
3399 if (current == coro)
3400 SWAP_SVS (current);
3401
3402 if (!coro->swap_sv)
3403 coro->swap_sv = newAV ();
3404
3405 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3406 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3407
3408 if (current == coro)
3409 SWAP_SVS (current);
3410}
3411
3412
2198MODULE = Coro::State PACKAGE = Coro 3413MODULE = Coro::State PACKAGE = Coro
2199 3414
2200BOOT: 3415BOOT:
2201{ 3416{
2202 int i;
2203
2204 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2205 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3417 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2206 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3418 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2207 3419 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3420 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2208 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3421 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2209 SvREADONLY_on (coro_current); 3422 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3423 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3424 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3425 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2210 3426
3427 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3428 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3429 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3430 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3431
2211 coro_stash = gv_stashpv ("Coro", TRUE); 3432 coro_stash = gv_stashpv ("Coro", TRUE);
2212 3433
2213 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3434 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2214 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3435 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2215 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3436 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2216 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3437 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2217 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3438 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2218 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3439 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2219
2220 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2221 coro_ready[i] = newAV ();
2222 3440
2223 { 3441 {
2224 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3442 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2225 3443
2226 coroapi.schedule = api_schedule; 3444 coroapi.schedule = api_schedule;
3445 coroapi.schedule_to = api_schedule_to;
2227 coroapi.cede = api_cede; 3446 coroapi.cede = api_cede;
2228 coroapi.cede_notself = api_cede_notself; 3447 coroapi.cede_notself = api_cede_notself;
2229 coroapi.ready = api_ready; 3448 coroapi.ready = api_ready;
2230 coroapi.is_ready = api_is_ready; 3449 coroapi.is_ready = api_is_ready;
2231 coroapi.nready = &coro_nready; 3450 coroapi.nready = coro_nready;
2232 coroapi.current = coro_current; 3451 coroapi.current = coro_current;
2233 3452
2234 GCoroAPI = &coroapi; 3453 /*GCoroAPI = &coroapi;*/
2235 sv_setiv (sv, (IV)&coroapi); 3454 sv_setiv (sv, (IV)&coroapi);
2236 SvREADONLY_on (sv); 3455 SvREADONLY_on (sv);
2237 } 3456 }
2238} 3457}
3458
3459SV *
3460async (...)
3461 PROTOTYPE: &@
3462 CODE:
3463 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3464 api_ready (aTHX_ RETVAL);
3465 OUTPUT:
3466 RETVAL
3467
3468void
3469terminate (...)
3470 CODE:
3471 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3472
3473void
3474schedule (...)
3475 CODE:
3476 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3477
3478void
3479schedule_to (...)
3480 CODE:
3481 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3482
3483void
3484cede_to (...)
3485 CODE:
3486 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3487
3488void
3489cede (...)
3490 CODE:
3491 CORO_EXECUTE_SLF_XS (slf_init_cede);
3492
3493void
3494cede_notself (...)
3495 CODE:
3496 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2239 3497
2240void 3498void
2241_set_current (SV *current) 3499_set_current (SV *current)
2242 PROTOTYPE: $ 3500 PROTOTYPE: $
2243 CODE: 3501 CODE:
… …
2246 3504
2247void 3505void
2248_set_readyhook (SV *hook) 3506_set_readyhook (SV *hook)
2249 PROTOTYPE: $ 3507 PROTOTYPE: $
2250 CODE: 3508 CODE:
2251 LOCK;
2252 SvREFCNT_dec (coro_readyhook); 3509 SvREFCNT_dec (coro_readyhook);
3510 SvGETMAGIC (hook);
3511 if (SvOK (hook))
3512 {
2253 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3513 coro_readyhook = newSVsv (hook);
2254 UNLOCK; 3514 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3515 }
3516 else
3517 {
3518 coro_readyhook = 0;
3519 CORO_READYHOOK = 0;
3520 }
2255 3521
2256int 3522int
2257prio (Coro::State coro, int newprio = 0) 3523prio (Coro::State coro, int newprio = 0)
3524 PROTOTYPE: $;$
2258 ALIAS: 3525 ALIAS:
2259 nice = 1 3526 nice = 1
2260 CODE: 3527 CODE:
2261{ 3528{
2262 RETVAL = coro->prio; 3529 RETVAL = coro->prio;
… …
2264 if (items > 1) 3531 if (items > 1)
2265 { 3532 {
2266 if (ix) 3533 if (ix)
2267 newprio = coro->prio - newprio; 3534 newprio = coro->prio - newprio;
2268 3535
2269 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3536 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2270 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3537 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2271 3538
2272 coro->prio = newprio; 3539 coro->prio = newprio;
2273 } 3540 }
2274} 3541}
2275 OUTPUT: 3542 OUTPUT:
… …
2277 3544
2278SV * 3545SV *
2279ready (SV *self) 3546ready (SV *self)
2280 PROTOTYPE: $ 3547 PROTOTYPE: $
2281 CODE: 3548 CODE:
2282 RETVAL = boolSV (api_ready (self)); 3549 RETVAL = boolSV (api_ready (aTHX_ self));
2283 OUTPUT: 3550 OUTPUT:
2284 RETVAL 3551 RETVAL
2285 3552
2286int 3553int
2287nready (...) 3554nready (...)
… …
2289 CODE: 3556 CODE:
2290 RETVAL = coro_nready; 3557 RETVAL = coro_nready;
2291 OUTPUT: 3558 OUTPUT:
2292 RETVAL 3559 RETVAL
2293 3560
2294# for async_pool speedup
2295void 3561void
2296_pool_1 (SV *cb) 3562suspend (Coro::State self)
3563 PROTOTYPE: $
2297 CODE: 3564 CODE:
2298{ 3565 self->flags |= CF_SUSPENDED;
2299 struct coro *coro = SvSTATE (coro_current);
2300 HV *hv = (HV *)SvRV (coro_current);
2301 AV *defav = GvAV (PL_defgv);
2302 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2303 AV *invoke_av;
2304 int i, len;
2305 3566
2306 if (!invoke) 3567void
3568resume (Coro::State self)
3569 PROTOTYPE: $
3570 CODE:
3571 self->flags &= ~CF_SUSPENDED;
3572
3573void
3574_pool_handler (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3577
3578void
3579async_pool (SV *cv, ...)
3580 PROTOTYPE: &@
3581 PPCODE:
3582{
3583 HV *hv = (HV *)av_pop (av_async_pool);
3584 AV *av = newAV ();
3585 SV *cb = ST (0);
3586 int i;
3587
3588 av_extend (av, items - 2);
3589 for (i = 1; i < items; ++i)
3590 av_push (av, SvREFCNT_inc_NN (ST (i)));
3591
3592 if ((SV *)hv == &PL_sv_undef)
2307 { 3593 {
2308 SV *old = PL_diehook; 3594 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2309 PL_diehook = 0; 3595 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2310 SvREFCNT_dec (old); 3596 SvREFCNT_dec (sv);
2311 croak ("\3async_pool terminate\2\n");
2312 } 3597 }
2313 3598
2314 SvREFCNT_dec (coro->saved_deffh);
2315 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2316
2317 hv_store (hv, "desc", sizeof ("desc") - 1,
2318 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2319
2320 invoke_av = (AV *)SvRV (invoke);
2321 len = av_len (invoke_av);
2322
2323 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2324
2325 if (len > 0)
2326 { 3599 {
2327 av_fill (defav, len - 1); 3600 struct coro *coro = SvSTATE_hv (hv);
2328 for (i = 0; i < len; ++i) 3601
2329 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3602 assert (!coro->invoke_cb);
3603 assert (!coro->invoke_av);
3604 coro->invoke_cb = SvREFCNT_inc (cb);
3605 coro->invoke_av = av;
2330 } 3606 }
2331 3607
3608 api_ready (aTHX_ (SV *)hv);
3609
3610 if (GIMME_V != G_VOID)
3611 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3612 else
2332 SvREFCNT_dec (invoke); 3613 SvREFCNT_dec (hv);
2333} 3614}
2334 3615
2335void 3616SV *
2336_pool_2 (SV *cb) 3617rouse_cb ()
3618 PROTOTYPE:
2337 CODE: 3619 CODE:
2338{ 3620 RETVAL = coro_new_rouse_cb (aTHX);
2339 struct coro *coro = SvSTATE (coro_current);
2340
2341 sv_setsv (cb, &PL_sv_undef);
2342
2343 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2344 coro->saved_deffh = 0;
2345
2346 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2347 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2348 {
2349 SV *old = PL_diehook;
2350 PL_diehook = 0;
2351 SvREFCNT_dec (old);
2352 croak ("\3async_pool terminate\2\n");
2353 }
2354
2355 av_clear (GvAV (PL_defgv));
2356 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2357 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2358
2359 coro->prio = 0;
2360
2361 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2362 api_trace (coro_current, 0);
2363
2364 av_push (av_async_pool, newSVsv (coro_current));
2365}
2366
2367#if 0
2368
2369void
2370_generator_call (...)
2371 PROTOTYPE: @
2372 PPCODE:
2373 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2374 xxxx
2375 abort ();
2376
2377SV *
2378gensub (SV *sub, ...)
2379 PROTOTYPE: &;@
2380 CODE:
2381{
2382 struct coro *coro;
2383 MAGIC *mg;
2384 CV *xcv;
2385 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2386 int i;
2387
2388 CvGV (ncv) = CvGV (cv);
2389 CvFILE (ncv) = CvFILE (cv);
2390
2391 Newz (0, coro, 1, struct coro);
2392 coro->args = newAV ();
2393 coro->flags = CF_NEW;
2394
2395 av_extend (coro->args, items - 1);
2396 for (i = 1; i < items; i++)
2397 av_push (coro->args, newSVsv (ST (i)));
2398
2399 CvISXSUB_on (ncv);
2400 CvXSUBANY (ncv).any_ptr = (void *)coro;
2401
2402 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2403
2404 CvXSUB (ncv) = CvXSUB (xcv);
2405 CvANON_on (ncv);
2406
2407 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2408 RETVAL = newRV_noinc ((SV *)ncv);
2409}
2410 OUTPUT: 3621 OUTPUT:
2411 RETVAL 3622 RETVAL
2412 3623
2413#endif
2414
2415
2416MODULE = Coro::State PACKAGE = Coro::AIO
2417
2418void 3624void
2419_get_state (SV *self) 3625rouse_wait (...)
3626 PROTOTYPE: ;$
2420 PPCODE: 3627 PPCODE:
2421{ 3628 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2422 AV *defav = GvAV (PL_defgv);
2423 AV *av = newAV ();
2424 int i;
2425 SV *data_sv = newSV (sizeof (struct io_state));
2426 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2427 SvCUR_set (data_sv, sizeof (struct io_state));
2428 SvPOK_only (data_sv);
2429
2430 data->errorno = errno;
2431 data->laststype = PL_laststype;
2432 data->laststatval = PL_laststatval;
2433 data->statcache = PL_statcache;
2434
2435 av_extend (av, AvFILLp (defav) + 1 + 1);
2436
2437 for (i = 0; i <= AvFILLp (defav); ++i)
2438 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2439
2440 av_push (av, data_sv);
2441
2442 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2443
2444 api_ready (self);
2445}
2446 3629
2447void 3630void
2448_set_state (SV *state) 3631on_enter (SV *block)
3632 ALIAS:
3633 on_leave = 1
2449 PROTOTYPE: $ 3634 PROTOTYPE: &
3635 CODE:
3636{
3637 struct coro *coro = SvSTATE_current;
3638 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3639
3640 block = s_get_cv_croak (block);
3641
3642 if (!*avp)
3643 *avp = newAV ();
3644
3645 av_push (*avp, SvREFCNT_inc (block));
3646
3647 if (!ix)
3648 on_enterleave_call (aTHX_ block);
3649
3650 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3651 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3652 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3653}
3654
3655
3656MODULE = Coro::State PACKAGE = PerlIO::cede
3657
3658BOOT:
3659 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3660
3661
3662MODULE = Coro::State PACKAGE = Coro::Semaphore
3663
3664SV *
3665new (SV *klass, SV *count = 0)
3666 CODE:
3667{
3668 int semcnt = 1;
3669
3670 if (count)
3671 {
3672 SvGETMAGIC (count);
3673
3674 if (SvOK (count))
3675 semcnt = SvIV (count);
3676 }
3677
3678 RETVAL = sv_bless (
3679 coro_waitarray_new (aTHX_ semcnt),
3680 GvSTASH (CvGV (cv))
3681 );
3682}
3683 OUTPUT:
3684 RETVAL
3685
3686# helper for Coro::Channel and others
3687SV *
3688_alloc (int count)
3689 CODE:
3690 RETVAL = coro_waitarray_new (aTHX_ count);
3691 OUTPUT:
3692 RETVAL
3693
3694SV *
3695count (SV *self)
3696 CODE:
3697 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3698 OUTPUT:
3699 RETVAL
3700
3701void
3702up (SV *self, int adjust = 1)
3703 ALIAS:
3704 adjust = 1
3705 CODE:
3706 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3707
3708void
3709down (...)
3710 CODE:
3711 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3712
3713void
3714wait (...)
3715 CODE:
3716 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3717
3718void
3719try (SV *self)
3720 PPCODE:
3721{
3722 AV *av = (AV *)SvRV (self);
3723 SV *count_sv = AvARRAY (av)[0];
3724 IV count = SvIVX (count_sv);
3725
3726 if (count > 0)
3727 {
3728 --count;
3729 SvIVX (count_sv) = count;
3730 XSRETURN_YES;
3731 }
3732 else
3733 XSRETURN_NO;
3734}
3735
3736void
3737waiters (SV *self)
3738 PPCODE:
3739{
3740 AV *av = (AV *)SvRV (self);
3741 int wcount = AvFILLp (av) + 1 - 1;
3742
3743 if (GIMME_V == G_SCALAR)
3744 XPUSHs (sv_2mortal (newSViv (wcount)));
3745 else
3746 {
3747 int i;
3748 EXTEND (SP, wcount);
3749 for (i = 1; i <= wcount; ++i)
3750 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3751 }
3752}
3753
3754MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3755
3756void
3757_may_delete (SV *sem, int count, int extra_refs)
2450 PPCODE: 3758 PPCODE:
2451{ 3759{
2452 AV *av = (AV *)SvRV (state); 3760 AV *av = (AV *)SvRV (sem);
2453 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2454 int i;
2455 3761
2456 errno = data->errorno; 3762 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2457 PL_laststype = data->laststype; 3763 && AvFILLp (av) == 0 /* no waiters, just count */
2458 PL_laststatval = data->laststatval; 3764 && SvIV (AvARRAY (av)[0]) == count)
2459 PL_statcache = data->statcache; 3765 XSRETURN_YES;
2460 3766
3767 XSRETURN_NO;
3768}
3769
3770MODULE = Coro::State PACKAGE = Coro::Signal
3771
3772SV *
3773new (SV *klass)
3774 CODE:
3775 RETVAL = sv_bless (
3776 coro_waitarray_new (aTHX_ 0),
3777 GvSTASH (CvGV (cv))
3778 );
3779 OUTPUT:
3780 RETVAL
3781
3782void
3783wait (...)
3784 CODE:
3785 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3786
3787void
3788broadcast (SV *self)
3789 CODE:
3790{
3791 AV *av = (AV *)SvRV (self);
3792 coro_signal_wake (aTHX_ av, AvFILLp (av));
3793}
3794
3795void
3796send (SV *self)
3797 CODE:
3798{
3799 AV *av = (AV *)SvRV (self);
3800
2461 EXTEND (SP, AvFILLp (av)); 3801 if (AvFILLp (av))
2462 for (i = 0; i < AvFILLp (av); ++i) 3802 coro_signal_wake (aTHX_ av, 1);
2463 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3803 else
3804 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2464} 3805}
3806
3807IV
3808awaited (SV *self)
3809 CODE:
3810 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3811 OUTPUT:
3812 RETVAL
2465 3813
2466 3814
2467MODULE = Coro::State PACKAGE = Coro::AnyEvent 3815MODULE = Coro::State PACKAGE = Coro::AnyEvent
2468 3816
2469BOOT: 3817BOOT:
2470 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3818 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2471 3819
2472SV * 3820void
2473_schedule (...) 3821_schedule (...)
2474 PROTOTYPE: @
2475 CODE: 3822 CODE:
2476{ 3823{
2477 static int incede; 3824 static int incede;
2478 3825
2479 api_cede_notself (); 3826 api_cede_notself (aTHX);
2480 3827
2481 ++incede; 3828 ++incede;
2482 while (coro_nready >= incede && api_cede ()) 3829 while (coro_nready >= incede && api_cede (aTHX))
2483 ; 3830 ;
2484 3831
2485 sv_setsv (sv_activity, &PL_sv_undef); 3832 sv_setsv (sv_activity, &PL_sv_undef);
2486 if (coro_nready >= incede) 3833 if (coro_nready >= incede)
2487 { 3834 {
2488 PUSHMARK (SP); 3835 PUSHMARK (SP);
2489 PUTBACK; 3836 PUTBACK;
2490 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3837 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2491 SPAGAIN;
2492 } 3838 }
2493 3839
2494 --incede; 3840 --incede;
2495} 3841}
2496 3842
2497 3843
2498MODULE = Coro::State PACKAGE = PerlIO::cede 3844MODULE = Coro::State PACKAGE = Coro::AIO
2499 3845
2500BOOT: 3846void
2501 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3847_register (char *target, char *proto, SV *req)
3848 CODE:
3849{
3850 SV *req_cv = s_get_cv_croak (req);
3851 /* newXSproto doesn't return the CV on 5.8 */
3852 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3853 sv_setpv ((SV *)slf_cv, proto);
3854 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3855}
2502 3856
3857MODULE = Coro::State PACKAGE = Coro::Select
3858
3859void
3860patch_pp_sselect ()
3861 CODE:
3862 if (!coro_old_pp_sselect)
3863 {
3864 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3865 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3866 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3867 }
3868
3869void
3870unpatch_pp_sselect ()
3871 CODE:
3872 if (coro_old_pp_sselect)
3873 {
3874 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3875 coro_old_pp_sselect = 0;
3876 }
3877
3878

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