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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.394 by root, Sat Apr 30 05:17:43 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
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 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
108#endif 68#endif
109 69
110#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
117#endif 77#endif
118 78
119/* The next macros try to return the current stack pointer, in an as 79/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 80 * portable way as possible. */
121#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
123#else 84#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
125#endif 87#endif
126 88
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
128 90
129#if __GNUC__ >= 3 91#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 94# define INLINE static inline
133#else 95#else
134# define attribute(x) 96# define attribute(x)
135# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
136# define INLINE static 98# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
141 103
142#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
143 105
144#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
145 108
146#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
147# if CORO_PTHREAD 110# if CORO_PTHREAD
148static void *coro_thx; 111static void *coro_thx;
149# endif 112# endif
150#endif 113#endif
151 114
152/* helper storage struct for Coro::AIO */ 115#ifdef __linux
153struct io_state 116# include <time.h> /* for timespec */
154{ 117# include <syscall.h> /* for SYS_* */
155 AV *res; 118# ifdef SYS_clock_gettime
156 int errorno; 119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 120# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 122# endif
160}; 123#endif
161 124
162static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
127
128/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX);
163 131
164static U32 cctx_gen; 132static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 133static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 134static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 135static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 136static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 137static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 138static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 139
140static AV *av_destroy; /* destruction queue */
141static SV *sv_manager; /* the manager coro */
142static SV *sv_idle; /* $Coro::idle */
172 143
173static GV *irsgv; /* $/ */ 144static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 145static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 146static SV *rv_diehook;
176static SV *rv_warnhook; 147static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 148static HV *hv_sig; /* %SIG */
178 149
179/* async_pool helper stuff */ 150/* async_pool helper stuff */
180static SV *sv_pool_rss; 151static SV *sv_pool_rss;
181static SV *sv_pool_size; 152static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 154static AV *av_async_pool; /* idle pool */
155static SV *sv_Coro; /* class string */
156static CV *cv_pool_handler;
183 157
184/* Coro::AnyEvent */ 158/* Coro::AnyEvent */
185static SV *sv_activity; 159static SV *sv_activity;
160
161/* enable processtime/realtime profiling */
162static char enable_times;
163typedef U32 coro_ts[2];
164static coro_ts time_real, time_cpu;
165static char times_valid;
186 166
187static struct coro_cctx *cctx_first; 167static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 168static int cctx_count, cctx_idle;
189 169
190enum { 170enum {
… …
216 int valgrind_id; 196 int valgrind_id;
217#endif 197#endif
218 unsigned char flags; 198 unsigned char flags;
219} coro_cctx; 199} coro_cctx;
220 200
201static coro_cctx *cctx_current; /* the currently running cctx */
202
203/*****************************************************************************/
204
221enum { 205enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
226}; 212};
227 213
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 214/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 215typedef struct
230{ 216{
231 SV *defsv; 217 SV *defsv;
232 AV *defav; 218 AV *defav;
233 SV *errsv; 219 SV *errsv;
234 SV *irsgv; 220 SV *irsgv;
221 HV *hinthv;
235#define VAR(name,type) type name; 222#define VAR(name,type) type name;
236# include "state.h" 223# include "state.h"
237#undef VAR 224#undef VAR
238} perl_slots; 225} perl_slots;
239 226
… …
242/* this is a structure representing a perl-level coroutine */ 229/* this is a structure representing a perl-level coroutine */
243struct coro { 230struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 231 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 232 coro_cctx *cctx;
246 233
247 /* process data */ 234 /* ready queue */
235 struct coro *next_ready;
236
237 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 238 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 239 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 240 perl_slots *slot; /* basically the saved sp */
251 241
242 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 243 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 244 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 245 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 246 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 247 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
257 248
258 /* statistics */ 249 /* statistics */
259 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
260 251
261 /* coro process data */ 252 /* coro process data */
262 int prio; 253 int prio;
263 SV *throw; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
255 SV *rouse_cb;
264 256
265 /* async_pool */ 257 /* async_pool */
266 SV *saved_deffh; 258 SV *saved_deffh;
259 SV *invoke_cb;
260 AV *invoke_av;
261
262 /* on_enter/on_leave */
263 AV *on_enter;
264 AV *on_leave;
265
266 /* swap_sv */
267 AV *swap_sv;
268
269 /* times */
270 coro_ts t_cpu, t_real;
267 271
268 /* linked list */ 272 /* linked list */
269 struct coro *next, *prev; 273 struct coro *next, *prev;
270}; 274};
271 275
272typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
274 278
279/* the following variables are effectively part of the perl context */
280/* and get copied between struct coro and these variables */
281/* the main reason we don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
276 283
277/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
278 285
279#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
285 292
286/* for Coro.pm */ 293/* for Coro.pm */
287static SV *coro_current; 294static SV *coro_current;
288static SV *coro_readyhook; 295static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 298static struct coro *coro_first;
291#define coro_nready coroapi.nready 299#define coro_nready coroapi.nready
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325static void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335static double
336coro_nvtime ()
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344static void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353static void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
292 372
293/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
294 374
295static SV * 375static SV *
296coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 400 get_hv (name, create);
321#endif 401#endif
322 return get_hv (name, create); 402 return get_hv (name, create);
323} 403}
324 404
405INLINE void
406coro_times_update ()
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428INLINE void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440INLINE void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471INLINE struct coro *
472SvSTATE_ (pTHX_ SV *coro)
473{
474 HV *stash;
475 MAGIC *mg;
476
477 if (SvROK (coro))
478 coro = SvRV (coro);
479
480 if (expect_false (SvTYPE (coro) != SVt_PVHV))
481 croak ("Coro::State object required");
482
483 stash = SvSTASH (coro);
484 if (expect_false (stash != coro_stash && stash != coro_state_stash))
485 {
486 /* very slow, but rare, check */
487 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
488 croak ("Coro::State object required");
489 }
490
491 mg = CORO_MAGIC_state (coro);
492 return (struct coro *)mg->mg_ptr;
493}
494
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496
497/* faster than SvSTATE, but expects a coroutine hv */
498#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500
501/*****************************************************************************/
502/* padlist management and caching */
503
325static AV * 504static AV *
326coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
327{ 506{
328 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
330 509
331 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 516#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 518 --AvFILLp (padlist);
340 519
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
343 522
344 return newpadlist; 523 return newpadlist;
345} 524}
346 525
347static void 526static void
348free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
349{ 528{
350 /* may be during global destruction */ 529 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
352 { 531 {
353 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
354 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
355 { 535 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
357 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 538 I32 j = AvFILLp (av);
359 SV *sv; 539
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 545 }
366 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
368 } 551 }
369} 552}
370 553
371static int 554static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 556{
374 AV *padlist; 557 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 558 AV *av = (AV *)mg->mg_obj;
559
560 /* perl manages to free our internal AV and _then_ call us */
561 if (IN_DESTRUCT)
562 return 0;
376 563
377 /* casting is fun. */ 564 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
380 567
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 569
383 return 0; 570 return 0;
384} 571}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 572
389static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 574 0, 0, 0, 0,
391 coro_cv_free 575 coro_cv_free
392}; 576};
393
394#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \
396 ? SvMAGIC (sv)->mg_type == type \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429 577
430/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
431static void 579static void
432get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
433{ 581{
… …
439 else 587 else
440 { 588 {
441#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
448#else 596#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 598#endif
451 } 599 }
452} 600}
453 601
454static void 602static void
… …
461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
462 610
463 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
464 612
465 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
467 615
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 617}
470 618
471/** load & save, init *******************************************************/ 619/** load & save, init *******************************************************/
620
621/* swap sv heads, at least logically */
622static void
623swap_svs (pTHX_ Coro__State c)
624{
625 int i;
626
627 for (i = 0; i <= AvFILLp (c->swap_sv); )
628 {
629 SV *a = AvARRAY (c->swap_sv)[i++];
630 SV *b = AvARRAY (c->swap_sv)[i++];
631
632 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
633 SV tmp;
634
635 /* swap sv_any */
636 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
637
638 /* swap sv_flags */
639 SvFLAGS (&tmp) = SvFLAGS (a);
640 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
641 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
642
643#if PERL_VERSION_ATLEAST (5,10,0)
644 /* perl 5.10 complicates this _quite_ a bit, but it also is
645 * much faster, so no quarrels here. alternatively, we could
646 * sv_upgrade to avoid this.
647 */
648 {
649 /* swap sv_u */
650 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
651
652 /* if SvANY points to the head, we need to adjust the pointers,
653 * as the pointer for a still points to b, and maybe vice versa.
654 */
655 #define svany_in_head(type) \
656 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
657
658 if (svany_in_head (SvTYPE (a)))
659 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
660
661 if (svany_in_head (SvTYPE (b)))
662 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
663 }
664#endif
665 }
666}
667
668#define SWAP_SVS(coro) \
669 if (expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro))
671
672static void
673on_enterleave_call (pTHX_ SV *cb);
472 674
473static void 675static void
474load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
475{ 677{
476 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
477 c->slot = 0; 679 c->slot = 0;
478 680
479 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
480 682
481 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
482 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
483 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
484 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
485 688
486 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
487 # include "state.h" 690 # include "state.h"
488 #undef VAR 691 #undef VAR
489 692
… …
501 } 704 }
502 705
503 PUTBACK; 706 PUTBACK;
504 } 707 }
505 708
506 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
710 CORO_THROW = c->except;
711
712 if (expect_false (enable_times))
713 {
714 if (expect_false (!times_valid))
715 coro_times_update ();
716
717 coro_times_sub (c);
718 }
719
720 if (expect_false (c->on_enter))
721 {
722 int i;
723
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
726 }
727
728 SWAP_SVS (c);
507} 729}
508 730
509static void 731static void
510save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
511{ 733{
734 SWAP_SVS (c);
735
736 if (expect_false (c->on_leave))
737 {
738 int i;
739
740 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 }
743
744 times_valid = 0;
745
746 if (expect_false (enable_times))
747 {
748 coro_times_update (); times_valid = 1;
749 coro_times_add (c);
750 }
751
752 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
513 754
514 { 755 {
515 dSP; 756 dSP;
516 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
528 { 769 {
529 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
530 { 771 {
531 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
532 773
533 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
534 { 775 {
535 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
536 777
537 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
538 { 779 {
… …
562 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
563 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
564 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
565 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
566 { 807 {
567 int i; 808 unsigned int i;
568 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
569 CXINC; 810 CXINC;
570 } 811 }
571 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
572 813
573 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
574 815
575 { 816 {
576 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
577 818
578 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
579 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
580 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
581 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
582 824
583 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
584 # include "state.h" 826 # include "state.h"
585 #undef VAR 827 #undef VAR
586 } 828 }
… …
591 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
594 */ 836 */
595#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
597#else 839#else
598static void 840static void
599coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
600{ 842{
601 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 8);
… …
664#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 907 Safefree (PL_retstack);
666#endif 908#endif
667} 909}
668 910
911#define CORO_RSS \
912 rss += sizeof (SYM (curstackinfo)); \
913 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
914 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
915 rss += SYM (tmps_max) * sizeof (SV *); \
916 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
917 rss += SYM (scopestack_max) * sizeof (I32); \
918 rss += SYM (savestack_max) * sizeof (ANY);
919
669static size_t 920static size_t
670coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
671{ 922{
672 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
673 924
674 if (coro->mainstack) 925 if (coro->mainstack)
675 { 926 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
680 { 928 {
681 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
682 930 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 931 #undef SYM
686 } 932 }
687 else 933 else
688 slot = coro->slot;
689
690 if (slot)
691 { 934 {
692 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 938 }
704 } 939 }
705 940
706 return rss; 941 return rss;
707} 942}
… …
720#endif 955#endif
721 956
722/* 957/*
723 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
725 * and instead of tryign to save and restore the hash elements, we just provide 960 * and instead of trying to save and restore the hash elements, we just provide
726 * readback here. 961 * readback here.
727 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
728 * not expecting this to actually change the hook. This is a potential problem
729 * when a schedule happens then, but we ignore this.
730 */ 962 */
731static int 963static int
732coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
733{ 965{
734 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788 1020
789 if (svp) 1021 if (svp)
790 { 1022 {
791 SV *old = *svp; 1023 SV *old = *svp;
792 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
793 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
794 return 0; 1026 return 0;
795 } 1027 }
796 } 1028 }
797 1029
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 1042{
811 return 0; 1043 return 0;
812} 1044}
813 1045
814static void 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
1053
1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
816{ 1056{
817 /* 1057 /*
818 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
819 */ 1059 */
820 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
821 1061
822 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
823 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
824 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
825 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
826 PL_curpm = 0; 1069 PL_curpm = 0;
827 PL_curpad = 0; 1070 PL_curpad = 0;
828 PL_localizing = 0; 1071 PL_localizing = 0;
829 PL_dirty = 0;
830 PL_restartop = 0; 1072 PL_restartop = 0;
831#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
832 PL_parser = 0; 1074 PL_parser = 0;
833#endif 1075#endif
1076 PL_hints = 0;
834 1077
835 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
836 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
837 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
838 1081
839 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
840 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
841 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0;
843 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
845 1089
846 { 1090 {
847 dSP; 1091 dSP;
848 UNOP myop; 1092 UNOP myop;
849 1093
850 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
853 1098
854 PUSHMARK (SP); 1099 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 1101 PUTBACK;
857 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 1104 }
861 1105
862 /* this newly created coroutine might be run on an existing cctx which most 1106 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 1108 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
867}
868 1111
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1113 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf;
1116 /* no flags etc. required, as an init function won't be called */
1117
1118 PL_op = (OP *)&init_perl_op;
1119
1120 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except;
1122
1123 SWAP_SVS (coro);
1124
1125 if (expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
869static void 1132static void
870coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
871{ 1134{
872 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
873 { 1136 {
874 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
883 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
884 1147
885 /* unwind main stack */ 1148 /* unwind main stack */
886 dounwind (-1); 1149 dounwind (-1);
887 } 1150 }
1151}
888 1152
889 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
890 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
891 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
892 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
893 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv));
895 1157
896 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook);
898 1158 {
1159 struct coro *current = SvSTATE_current;
1160
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162
1163 save_perl (aTHX_ current);
1164 load_perl (aTHX_ coro);
1165
1166 coro_unwind_stacks (aTHX);
1167 coro_destruct_stacks (aTHX);
1168
1169 /* restore swapped sv's */
1170 SWAP_SVS (coro);
1171
1172 // now save some sv's to be free'd later
1173 svf [0] = GvSV (PL_defgv);
1174 svf [1] = (SV *)GvAV (PL_defgv);
1175 svf [2] = GvSV (PL_errgv);
1176 svf [3] = (SV *)PL_defoutgv;
1177 svf [4] = PL_rs;
1178 svf [5] = GvSV (irsgv);
1179 svf [6] = (SV *)GvHV (PL_hintgv);
1180 svf [7] = PL_diehook;
1181 svf [8] = PL_warnhook;
1182 assert (9 == sizeof (svf) / sizeof (*svf));
1183
1184 load_perl (aTHX_ current);
1185 }
1186
1187 {
1188 unsigned int i;
1189
1190 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1191 SvREFCNT_dec (svf [i]);
1192
899 SvREFCNT_dec (coro->saved_deffh); 1193 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 1194 SvREFCNT_dec (coro->rouse_cb);
901 1195 SvREFCNT_dec (coro->invoke_cb);
902 coro_destruct_stacks (aTHX); 1196 SvREFCNT_dec (coro->invoke_av);
1197 }
903} 1198}
904 1199
905INLINE void 1200INLINE void
906free_coro_mortal (pTHX) 1201free_coro_mortal (pTHX)
907{ 1202{
… …
915static int 1210static int
916runops_trace (pTHX) 1211runops_trace (pTHX)
917{ 1212{
918 COP *oldcop = 0; 1213 COP *oldcop = 0;
919 int oldcxix = -2; 1214 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 1215
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1216 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 1217 {
925 PERL_ASYNC_CHECK (); 1218 PERL_ASYNC_CHECK ();
926 1219
927 if (cctx->flags & CC_TRACE_ALL) 1220 if (cctx_current->flags & CC_TRACE_ALL)
928 { 1221 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1222 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
930 { 1223 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1224 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 1225 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 1226 AV *av = newAV (); /* return values */
934 SV **cb; 1227 SV **cb;
… …
971 1264
972 if (PL_curcop != &PL_compiling) 1265 if (PL_curcop != &PL_compiling)
973 { 1266 {
974 SV **cb; 1267 SV **cb;
975 1268
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1269 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
977 { 1270 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1272
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1273 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1274 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1275 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1276 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1277 SV *fullname = sv_2mortal (newSV (0));
986 1278
987 if (isGV (gv)) 1279 if (isGV (gv))
… …
992 SAVETMPS; 1284 SAVETMPS;
993 EXTEND (SP, 3); 1285 EXTEND (SP, 3);
994 PUSHMARK (SP); 1286 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1287 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1288 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1289 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1290 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1291 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); 1292 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1293 SPAGAIN;
1002 FREETMPS; 1294 FREETMPS;
… …
1005 } 1297 }
1006 1298
1007 oldcxix = cxstack_ix; 1299 oldcxix = cxstack_ix;
1008 } 1300 }
1009 1301
1010 if (cctx->flags & CC_TRACE_LINE) 1302 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1303 {
1012 dSP; 1304 dSP;
1013 1305
1014 PL_runops = RUNOPS_DEFAULT; 1306 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1307 ENTER;
… …
1034 1326
1035 TAINT_NOT; 1327 TAINT_NOT;
1036 return 0; 1328 return 0;
1037} 1329}
1038 1330
1331static struct CoroSLF cctx_ssl_frame;
1332
1039static void 1333static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1334slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1335{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1336 ta->prev = 0;
1044} 1337}
1045 1338
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1339static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1340slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1341{
1049/* also initialises PL_top_env */ 1342 *frame = cctx_ssl_frame;
1343
1344 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1345}
1346
1347/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1348static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1349cctx_prepare (pTHX)
1052{ 1350{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1351 PL_top_env = &PL_start_env;
1057 1352
1058 if (cctx->flags & CC_TRACE) 1353 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1354 PL_runops = runops_trace;
1060 1355
1061 Zero (&myop, 1, UNOP); 1356 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1357 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1358 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1359 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1360
1065 PUSHMARK (SP); 1361 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1362 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1363
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1364 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1365 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1366}
1074 1367
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1368/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1369INLINE void
1077transfer_tail (pTHX) 1370transfer_tail (pTHX)
1078{ 1371{
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); 1372 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093} 1373}
1094 1374
1095/* 1375/*
1096 * this is a _very_ stripped down perl interpreter ;) 1376 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1377 */
… …
1109 /* normally we would need to skip the entersub here */ 1389 /* normally we would need to skip the entersub here */
1110 /* not doing so will re-execute it, which is exactly what we want */ 1390 /* not doing so will re-execute it, which is exactly what we want */
1111 /* PL_nop = PL_nop->op_next */ 1391 /* PL_nop = PL_nop->op_next */
1112 1392
1113 /* inject a fake subroutine call to cctx_init */ 1393 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1394 cctx_prepare (aTHX);
1115 1395
1116 /* cctx_run is the alternative tail of transfer() */ 1396 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1397 transfer_tail (aTHX);
1119 1398
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1399 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1400 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1401 perl_run (PL_curinterp);
1402 /*
1403 * Unfortunately, there is no way to get at the return values of the
1404 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1405 * runtime errors here, as this is just a random interpreter, not a thread.
1406 */
1123 1407
1124 /* 1408 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1409 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1410 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1411 * reason for perl_run to return. We try to exit by jumping to the
1128 * bootstrap-time "top" top_env, as we cannot restore the "main" 1412 * bootstrap-time "top" top_env, as we cannot restore the "main"
1129 * coroutine as Coro has no such concept 1413 * coroutine as Coro has no such concept.
1414 * This actually isn't valid with the pthread backend, but OSes requiring
1415 * that backend are too broken to do it in a standards-compliant way.
1130 */ 1416 */
1131 PL_top_env = main_top_env; 1417 PL_top_env = main_top_env;
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1418 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 } 1419 }
1134} 1420}
… …
1211cctx_destroy (coro_cctx *cctx) 1497cctx_destroy (coro_cctx *cctx)
1212{ 1498{
1213 if (!cctx) 1499 if (!cctx)
1214 return; 1500 return;
1215 1501
1502 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1503
1216 --cctx_count; 1504 --cctx_count;
1217 coro_destroy (&cctx->cctx); 1505 coro_destroy (&cctx->cctx);
1218 1506
1219 /* coro_transfer creates new, empty cctx's */ 1507 /* coro_transfer creates new, empty cctx's */
1220 if (cctx->sptr) 1508 if (cctx->sptr)
… …
1278/** coroutine switching *****************************************************/ 1566/** coroutine switching *****************************************************/
1279 1567
1280static void 1568static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1569transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1570{
1571 /* TODO: throwing up here is considered harmful */
1572
1283 if (expect_true (prev != next)) 1573 if (expect_true (prev != next))
1284 { 1574 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1575 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1576 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1287 1577
1288 if (expect_false (next->flags & CF_RUNNING))
1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1290
1291 if (expect_false (next->flags & CF_DESTROYED)) 1578 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1292 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1579 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1293 1580
1294#if !PERL_VERSION_ATLEAST (5,10,0) 1581#if !PERL_VERSION_ATLEAST (5,10,0)
1295 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1582 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1296 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1583 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1297#endif 1584#endif
1298 } 1585 }
1299} 1586}
1300 1587
1301/* always use the TRANSFER macro */ 1588/* always use the TRANSFER macro */
1302static void NOINLINE 1589static void NOINLINE /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1590transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1591{
1305 dSTACKLEVEL; 1592 dSTACKLEVEL;
1306 1593
1307 /* sometimes transfer is only called to set idle_sp */ 1594 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1595 if (expect_false (!prev))
1309 { 1596 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1597 cctx_current->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1598 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1599 }
1313 else if (expect_true (prev != next)) 1600 else if (expect_true (prev != next))
1314 { 1601 {
1315 coro_cctx *prev__cctx; 1602 coro_cctx *cctx_prev;
1316 1603
1317 if (expect_false (prev->flags & CF_NEW)) 1604 if (expect_false (prev->flags & CF_NEW))
1318 { 1605 {
1319 /* create a new empty/source context */ 1606 /* create a new empty/source context */
1320 prev->cctx = cctx_new_empty ();
1321 prev->flags &= ~CF_NEW; 1607 prev->flags &= ~CF_NEW;
1322 prev->flags |= CF_RUNNING; 1608 prev->flags |= CF_RUNNING;
1323 } 1609 }
1324 1610
1325 prev->flags &= ~CF_RUNNING; 1611 prev->flags &= ~CF_RUNNING;
… …
1331 if (expect_false (next->flags & CF_NEW)) 1617 if (expect_false (next->flags & CF_NEW))
1332 { 1618 {
1333 /* need to start coroutine */ 1619 /* need to start coroutine */
1334 next->flags &= ~CF_NEW; 1620 next->flags &= ~CF_NEW;
1335 /* setup coroutine call */ 1621 /* setup coroutine call */
1336 coro_setup (aTHX_ next); 1622 init_perl (aTHX_ next);
1337 } 1623 }
1338 else 1624 else
1339 load_perl (aTHX_ next); 1625 load_perl (aTHX_ next);
1340 1626
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */ 1627 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1628 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1629 cctx_current->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1630 && !(cctx_current->flags & CC_TRACE)
1347 && !force_cctx 1631 && !force_cctx
1348 )) 1632 ))
1349 { 1633 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1634 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1635 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1352 1636
1353 prev->cctx = 0;
1354
1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1637 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1638 /* without this the next cctx_get might destroy the running cctx while still in use */
1357 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1639 if (expect_false (CCTX_EXPIRED (cctx_current)))
1358 if (!next->cctx) 1640 if (expect_true (!next->cctx))
1359 next->cctx = cctx_get (aTHX); 1641 next->cctx = cctx_get (aTHX);
1360 1642
1361 cctx_put (prev__cctx); 1643 cctx_put (cctx_current);
1362 } 1644 }
1645 else
1646 prev->cctx = cctx_current;
1363 1647
1364 ++next->usecount; 1648 ++next->usecount;
1365 1649
1366 if (expect_true (!next->cctx)) 1650 cctx_prev = cctx_current;
1367 next->cctx = cctx_get (aTHX); 1651 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1368 1652
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1653 next->cctx = 0;
1370 transfer_next = next;
1371 1654
1372 if (expect_false (prev__cctx != next->cctx)) 1655 if (expect_false (cctx_prev != cctx_current))
1373 { 1656 {
1374 prev__cctx->top_env = PL_top_env; 1657 cctx_prev->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1658 PL_top_env = cctx_current->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1659 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1377 } 1660 }
1378 1661
1379 transfer_tail (aTHX); 1662 transfer_tail (aTHX);
1380 } 1663 }
1381} 1664}
… …
1383#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1666#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1384#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1667#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1385 1668
1386/** high level stuff ********************************************************/ 1669/** high level stuff ********************************************************/
1387 1670
1388static int 1671static void
1389coro_state_destroy (pTHX_ struct coro *coro) 1672coro_state_destroy (pTHX_ struct coro *coro)
1390{ 1673{
1391 if (coro->flags & CF_DESTROYED) 1674 if (coro->flags & CF_DESTROYED)
1392 return 0; 1675 return;
1393 1676
1677 /* this callback is reserved for slf functions needing to do cleanup */
1394 if (coro->on_destroy) 1678 if (coro->on_destroy && !PL_dirty)
1395 coro->on_destroy (aTHX_ coro); 1679 coro->on_destroy (aTHX_ coro);
1680
1681 /*
1682 * The on_destroy above most likely is from an SLF call.
1683 * Since by definition the SLF call will not finish when we destroy
1684 * the coro, we will have to force-finish it here, otherwise
1685 * cleanup functions cannot call SLF functions.
1686 */
1687 coro->slf_frame.prepare = 0;
1396 1688
1397 coro->flags |= CF_DESTROYED; 1689 coro->flags |= CF_DESTROYED;
1398 1690
1399 if (coro->flags & CF_READY) 1691 if (coro->flags & CF_READY)
1400 { 1692 {
… …
1403 --coro_nready; 1695 --coro_nready;
1404 } 1696 }
1405 else 1697 else
1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1698 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1407 1699
1408 if (coro->mainstack && coro->mainstack != main_mainstack) 1700 if (coro->mainstack
1409 { 1701 && coro->mainstack != main_mainstack
1410 struct coro temp; 1702 && coro->slot
1411 1703 && !PL_dirty)
1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1413
1414 save_perl (aTHX_ &temp);
1415 load_perl (aTHX_ coro); 1704 destroy_perl (aTHX_ coro);
1416
1417 coro_destruct (aTHX_ coro);
1418
1419 load_perl (aTHX_ &temp);
1420
1421 coro->slot = 0;
1422 }
1423
1424 cctx_destroy (coro->cctx);
1425 SvREFCNT_dec (coro->args);
1426 1705
1427 if (coro->next) coro->next->prev = coro->prev; 1706 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1707 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1708 if (coro == coro_first) coro_first = coro->next;
1430 1709
1431 return 1; 1710 cctx_destroy (coro->cctx);
1711 SvREFCNT_dec (coro->startcv);
1712 SvREFCNT_dec (coro->args);
1713 SvREFCNT_dec (coro->swap_sv);
1714 SvREFCNT_dec (CORO_THROW);
1432} 1715}
1433 1716
1434static int 1717static int
1435coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1718coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1436{ 1719{
… …
1486 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1487} 1770}
1488 1771
1489/** Coro ********************************************************************/ 1772/** Coro ********************************************************************/
1490 1773
1491static void 1774INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1775coro_enq (pTHX_ struct coro *coro)
1493{ 1776{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1777 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1495}
1496 1778
1497static SV * 1779 SvREFCNT_inc_NN (coro->hv);
1780
1781 coro->next_ready = 0;
1782 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1783 ready [1] = coro;
1784}
1785
1786INLINE struct coro *
1498coro_deq (pTHX) 1787coro_deq (pTHX)
1499{ 1788{
1500 int prio; 1789 int prio;
1501 1790
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1791 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1503 if (AvFILLp (coro_ready [prio]) >= 0) 1792 {
1504 return av_shift (coro_ready [prio]); 1793 struct coro **ready = coro_ready [prio];
1794
1795 if (ready [0])
1796 {
1797 struct coro *coro = ready [0];
1798 ready [0] = coro->next_ready;
1799 return coro;
1800 }
1801 }
1505 1802
1506 return 0; 1803 return 0;
1804}
1805
1806static void
1807invoke_sv_ready_hook_helper (void)
1808{
1809 dTHX;
1810 dSP;
1811
1812 ENTER;
1813 SAVETMPS;
1814
1815 PUSHMARK (SP);
1816 PUTBACK;
1817 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1818
1819 FREETMPS;
1820 LEAVE;
1507} 1821}
1508 1822
1509static int 1823static int
1510api_ready (pTHX_ SV *coro_sv) 1824api_ready (pTHX_ SV *coro_sv)
1511{ 1825{
1512 struct coro *coro;
1513 SV *sv_hook;
1514 void (*xs_hook)(void);
1515
1516 if (SvROK (coro_sv))
1517 coro_sv = SvRV (coro_sv);
1518
1519 coro = SvSTATE (coro_sv); 1826 struct coro *coro = SvSTATE (coro_sv);
1520 1827
1521 if (coro->flags & CF_READY) 1828 if (coro->flags & CF_READY)
1522 return 0; 1829 return 0;
1523 1830
1524 coro->flags |= CF_READY; 1831 coro->flags |= CF_READY;
1525 1832
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1833 coro_enq (aTHX_ coro);
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1834
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1835 if (!coro_nready++)
1530 ++coro_nready; 1836 if (coroapi.readyhook)
1531 1837 coroapi.readyhook ();
1532 if (sv_hook)
1533 {
1534 dSP;
1535
1536 ENTER;
1537 SAVETMPS;
1538
1539 PUSHMARK (SP);
1540 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD);
1542 SPAGAIN;
1543
1544 FREETMPS;
1545 LEAVE;
1546 }
1547
1548 if (xs_hook)
1549 xs_hook ();
1550 1838
1551 return 1; 1839 return 1;
1552} 1840}
1553 1841
1554static int 1842static int
1555api_is_ready (pTHX_ SV *coro_sv) 1843api_is_ready (pTHX_ SV *coro_sv)
1556{ 1844{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1845 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1846}
1559 1847
1848/* expects to own a reference to next->hv */
1560INLINE void 1849INLINE void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1850prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1562{ 1851{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;)
1566 {
1567 next_sv = coro_deq (aTHX);
1568
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv))
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1580 SPAGAIN;
1581
1582 FREETMPS;
1583 LEAVE;
1584 continue;
1585 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current); 1852 SV *prev_sv = SvRV (coro_current);
1853
1603 ta->prev = SvSTATE (prev_sv); 1854 ta->prev = SvSTATE_hv (prev_sv);
1855 ta->next = next;
1856
1604 TRANSFER_CHECK (*ta); 1857 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1858
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv); 1859 SvRV_set (coro_current, (SV *)next->hv);
1608 1860
1609 free_coro_mortal (aTHX); 1861 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv; 1862 coro_mortal = prev_sv;
1611} 1863}
1612 1864
1865static void
1866prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1867{
1868 for (;;)
1869 {
1870 struct coro *next = coro_deq (aTHX);
1871
1872 if (expect_true (next))
1873 {
1874 /* cannot transfer to destroyed coros, skip and look for next */
1875 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1876 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1877 else
1878 {
1879 next->flags &= ~CF_READY;
1880 --coro_nready;
1881
1882 prepare_schedule_to (aTHX_ ta, next);
1883 break;
1884 }
1885 }
1886 else
1887 {
1888 /* nothing to schedule: call the idle handler */
1889 if (SvROK (sv_idle)
1890 && SvOBJECT (SvRV (sv_idle)))
1891 {
1892 if (SvRV (sv_idle) == SvRV (coro_current))
1893 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1894
1895 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1896 api_ready (aTHX_ SvRV (sv_idle));
1897 --coro_nready;
1898 }
1899 else
1900 {
1901 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1902 dSP;
1903
1904 ENTER;
1905 SAVETMPS;
1906
1907 PUSHMARK (SP);
1908 PUTBACK;
1909 call_sv (sv_idle, G_VOID | G_DISCARD);
1910
1911 FREETMPS;
1912 LEAVE;
1913 }
1914 }
1915 }
1916}
1917
1613INLINE void 1918INLINE void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 1919prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 1920{
1616 api_ready (aTHX_ coro_current); 1921 api_ready (aTHX_ coro_current);
1617 prepare_schedule (aTHX_ ta); 1922 prepare_schedule (aTHX_ ta);
… …
1636{ 1941{
1637 struct coro_transfer_args ta; 1942 struct coro_transfer_args ta;
1638 1943
1639 prepare_schedule (aTHX_ &ta); 1944 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 1945 TRANSFER (ta, 1);
1946}
1947
1948static void
1949api_schedule_to (pTHX_ SV *coro_sv)
1950{
1951 struct coro_transfer_args ta;
1952 struct coro *next = SvSTATE (coro_sv);
1953
1954 SvREFCNT_inc_NN (coro_sv);
1955 prepare_schedule_to (aTHX_ &ta, next);
1641} 1956}
1642 1957
1643static int 1958static int
1644api_cede (pTHX) 1959api_cede (pTHX)
1645{ 1960{
… …
1674static void 1989static void
1675api_trace (pTHX_ SV *coro_sv, int flags) 1990api_trace (pTHX_ SV *coro_sv, int flags)
1676{ 1991{
1677 struct coro *coro = SvSTATE (coro_sv); 1992 struct coro *coro = SvSTATE (coro_sv);
1678 1993
1994 if (coro->flags & CF_RUNNING)
1995 croak ("cannot enable tracing on a running coroutine, caught");
1996
1679 if (flags & CC_TRACE) 1997 if (flags & CC_TRACE)
1680 { 1998 {
1681 if (!coro->cctx) 1999 if (!coro->cctx)
1682 coro->cctx = cctx_new_run (); 2000 coro->cctx = cctx_new_run ();
1683 else if (!(coro->cctx->flags & CC_TRACE)) 2001 else if (!(coro->cctx->flags & CC_TRACE))
1684 croak ("cannot enable tracing on coroutine with custom stack,"); 2002 croak ("cannot enable tracing on coroutine with custom stack, caught");
1685 2003
1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2004 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1687 } 2005 }
1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2006 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1689 { 2007 {
… …
1692 if (coro->flags & CF_RUNNING) 2010 if (coro->flags & CF_RUNNING)
1693 PL_runops = RUNOPS_DEFAULT; 2011 PL_runops = RUNOPS_DEFAULT;
1694 else 2012 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 2013 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 2014 }
2015}
2016
2017static void
2018coro_call_on_destroy (pTHX_ struct coro *coro)
2019{
2020 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2021
2022 if (on_destroyp)
2023 {
2024 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2025 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2026 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2027
2028 while (AvFILLp (on_destroy) >= 0)
2029 {
2030 dSP; /* don't disturb outer sp */
2031 SV *cb = av_pop (on_destroy);
2032
2033 PUSHMARK (SP);
2034
2035 if (statusp)
2036 {
2037 int i;
2038 EXTEND (SP, AvFILLp (status) + 1);
2039
2040 for (i = 0; i <= AvFILLp (status); ++i)
2041 PUSHs (AvARRAY (status)[i]);
2042 }
2043
2044 PUTBACK;
2045 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2046 }
2047 }
2048}
2049
2050static void
2051coro_set_status (HV *coro_hv, SV **arg, int items)
2052{
2053 AV *av = newAV ();
2054
2055 /* items are actually not so common, so optimise for this case */
2056 if (items)
2057 {
2058 int i;
2059
2060 av_extend (av, items - 1);
2061
2062 for (i = 0; i < items; ++i)
2063 av_push (av, SvREFCNT_inc_NN (arg [i]));
2064 }
2065
2066 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2067}
2068
2069static void
2070slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2071{
2072 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2073 api_ready (aTHX_ sv_manager);
2074
2075 frame->prepare = prepare_schedule;
2076 frame->check = slf_check_repeat;
2077
2078 /* as a minor optimisation, we could unwind all stacks here */
2079 /* but that puts extra pressure on pp_slf, and is not worth much */
2080 /*coro_unwind_stacks (aTHX);*/
2081}
2082
2083static void
2084slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 HV *coro_hv = (HV *)SvRV (coro_current);
2087
2088 coro_set_status (coro_hv, arg, items);
2089 slf_init_terminate_cancel_common (frame, coro_hv);
2090}
2091
2092static void
2093slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 HV *coro_hv;
2096 struct coro *coro;
2097
2098 if (items <= 0)
2099 croak ("Coro::cancel called without coro object,");
2100
2101 coro = SvSTATE (arg [0]);
2102 coro_hv = coro->hv;
2103
2104 coro_set_status (coro_hv, arg + 1, items - 1);
2105
2106 if (expect_false (coro->flags & CF_NOCANCEL))
2107 {
2108 /* coro currently busy cancelling something, so just notify it */
2109 coro->slf_frame.data = (void *)coro;
2110
2111 frame->prepare = prepare_nop;
2112 frame->check = slf_check_nop;
2113 }
2114 else if (coro_hv == (HV *)SvRV (coro_current))
2115 {
2116 /* cancelling the current coro is allowed, and equals terminate */
2117 slf_init_terminate_cancel_common (frame, coro_hv);
2118 }
2119 else
2120 {
2121 struct coro *self = SvSTATE_current;
2122
2123 /* otherwise we cancel directly, purely for speed reasons
2124 * unfortunately, this requires some magic trickery, as
2125 * somebody else could cancel us, so we have to fight the cancellation.
2126 * this is ugly, and hopefully fully worth the extra speed.
2127 * besides, I can't get the slow-but-safe version working...
2128 */
2129 slf_frame.data = 0;
2130 self->flags |= CF_NOCANCEL;
2131
2132 coro_state_destroy (aTHX_ coro);
2133 coro_call_on_destroy (aTHX_ coro);
2134
2135 self->flags &= ~CF_NOCANCEL;
2136
2137 if (slf_frame.data)
2138 {
2139 /* while we were busy we have been cancelled, so terminate */
2140 slf_init_terminate_cancel_common (frame, self->hv);
2141 }
2142 else
2143 {
2144 frame->prepare = prepare_nop;
2145 frame->check = slf_check_nop;
2146 }
2147 }
2148}
2149
2150/*****************************************************************************/
2151/* async pool handler */
2152
2153static int
2154slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2155{
2156 HV *hv = (HV *)SvRV (coro_current);
2157 struct coro *coro = (struct coro *)frame->data;
2158
2159 if (!coro->invoke_cb)
2160 return 1; /* loop till we have invoke */
2161 else
2162 {
2163 hv_store (hv, "desc", sizeof ("desc") - 1,
2164 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2165
2166 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2167
2168 {
2169 dSP;
2170 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2171 PUTBACK;
2172 }
2173
2174 SvREFCNT_dec (GvAV (PL_defgv));
2175 GvAV (PL_defgv) = coro->invoke_av;
2176 coro->invoke_av = 0;
2177
2178 return 0;
2179 }
2180}
2181
2182static void
2183slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv ((SV *)hv);
2187
2188 if (expect_true (coro->saved_deffh))
2189 {
2190 /* subsequent iteration */
2191 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2192 coro->saved_deffh = 0;
2193
2194 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2195 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2196 {
2197 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2198 coro->invoke_av = newAV ();
2199
2200 frame->prepare = prepare_nop;
2201 }
2202 else
2203 {
2204 av_clear (GvAV (PL_defgv));
2205 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2206
2207 coro->prio = 0;
2208
2209 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2210 api_trace (aTHX_ coro_current, 0);
2211
2212 frame->prepare = prepare_schedule;
2213 av_push (av_async_pool, SvREFCNT_inc (hv));
2214 }
2215 }
2216 else
2217 {
2218 /* first iteration, simply fall through */
2219 frame->prepare = prepare_nop;
2220 }
2221
2222 frame->check = slf_check_pool_handler;
2223 frame->data = (void *)coro;
2224}
2225
2226/*****************************************************************************/
2227/* rouse callback */
2228
2229#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2230
2231static void
2232coro_rouse_callback (pTHX_ CV *cv)
2233{
2234 dXSARGS;
2235 SV *data = (SV *)S_GENSUB_ARG;
2236
2237 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2238 {
2239 /* first call, set args */
2240 SV *coro = SvRV (data);
2241 AV *av = newAV ();
2242
2243 SvRV_set (data, (SV *)av);
2244
2245 /* better take a full copy of the arguments */
2246 while (items--)
2247 av_store (av, items, newSVsv (ST (items)));
2248
2249 api_ready (aTHX_ coro);
2250 SvREFCNT_dec (coro);
2251 }
2252
2253 XSRETURN_EMPTY;
2254}
2255
2256static int
2257slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2258{
2259 SV *data = (SV *)frame->data;
2260
2261 if (CORO_THROW)
2262 return 0;
2263
2264 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2265 return 1;
2266
2267 /* now push all results on the stack */
2268 {
2269 dSP;
2270 AV *av = (AV *)SvRV (data);
2271 int i;
2272
2273 EXTEND (SP, AvFILLp (av) + 1);
2274 for (i = 0; i <= AvFILLp (av); ++i)
2275 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2276
2277 /* we have stolen the elements, so set length to zero and free */
2278 AvFILLp (av) = -1;
2279 av_undef (av);
2280
2281 PUTBACK;
2282 }
2283
2284 return 0;
2285}
2286
2287static void
2288slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2289{
2290 SV *cb;
2291
2292 if (items)
2293 cb = arg [0];
2294 else
2295 {
2296 struct coro *coro = SvSTATE_current;
2297
2298 if (!coro->rouse_cb)
2299 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2300
2301 cb = sv_2mortal (coro->rouse_cb);
2302 coro->rouse_cb = 0;
2303 }
2304
2305 if (!SvROK (cb)
2306 || SvTYPE (SvRV (cb)) != SVt_PVCV
2307 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2308 croak ("Coro::rouse_wait called with illegal callback argument,");
2309
2310 {
2311 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2312 SV *data = (SV *)S_GENSUB_ARG;
2313
2314 frame->data = (void *)data;
2315 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2316 frame->check = slf_check_rouse_wait;
2317 }
2318}
2319
2320static SV *
2321coro_new_rouse_cb (pTHX)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = SvSTATE_hv (hv);
2325 SV *data = newRV_inc ((SV *)hv);
2326 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2327
2328 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2329 SvREFCNT_dec (data); /* magicext increases the refcount */
2330
2331 SvREFCNT_dec (coro->rouse_cb);
2332 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2333
2334 return cb;
2335}
2336
2337/*****************************************************************************/
2338/* schedule-like-function opcode (SLF) */
2339
2340static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2341static const CV *slf_cv;
2342static SV **slf_argv;
2343static int slf_argc, slf_arga; /* count, allocated */
2344static I32 slf_ax; /* top of stack, for restore */
2345
2346/* this restores the stack in the case we patched the entersub, to */
2347/* recreate the stack frame as perl will on following calls */
2348/* since entersub cleared the stack */
2349static OP *
2350pp_restore (pTHX)
2351{
2352 int i;
2353 SV **SP = PL_stack_base + slf_ax;
2354
2355 PUSHMARK (SP);
2356
2357 EXTEND (SP, slf_argc + 1);
2358
2359 for (i = 0; i < slf_argc; ++i)
2360 PUSHs (sv_2mortal (slf_argv [i]));
2361
2362 PUSHs ((SV *)CvGV (slf_cv));
2363
2364 RETURNOP (slf_restore.op_first);
2365}
2366
2367static void
2368slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2369{
2370 SV **arg = (SV **)slf_frame.data;
2371
2372 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2373}
2374
2375static void
2376slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2377{
2378 if (items != 2)
2379 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2380
2381 frame->prepare = slf_prepare_transfer;
2382 frame->check = slf_check_nop;
2383 frame->data = (void *)arg; /* let's hope it will stay valid */
2384}
2385
2386static void
2387slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2388{
2389 frame->prepare = prepare_schedule;
2390 frame->check = slf_check_nop;
2391}
2392
2393static void
2394slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2395{
2396 struct coro *next = (struct coro *)slf_frame.data;
2397
2398 SvREFCNT_inc_NN (next->hv);
2399 prepare_schedule_to (aTHX_ ta, next);
2400}
2401
2402static void
2403slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2404{
2405 if (!items)
2406 croak ("Coro::schedule_to expects a coroutine argument, caught");
2407
2408 frame->data = (void *)SvSTATE (arg [0]);
2409 frame->prepare = slf_prepare_schedule_to;
2410 frame->check = slf_check_nop;
2411}
2412
2413static void
2414slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2415{
2416 api_ready (aTHX_ SvRV (coro_current));
2417
2418 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2419}
2420
2421static void
2422slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2423{
2424 frame->prepare = prepare_cede;
2425 frame->check = slf_check_nop;
2426}
2427
2428static void
2429slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2430{
2431 frame->prepare = prepare_cede_notself;
2432 frame->check = slf_check_nop;
2433}
2434
2435/*
2436 * these not obviously related functions are all rolled into one
2437 * function to increase chances that they all will call transfer with the same
2438 * stack offset
2439 * SLF stands for "schedule-like-function".
2440 */
2441static OP *
2442pp_slf (pTHX)
2443{
2444 I32 checkmark; /* mark SP to see how many elements check has pushed */
2445
2446 /* set up the slf frame, unless it has already been set-up */
2447 /* the latter happens when a new coro has been started */
2448 /* or when a new cctx was attached to an existing coroutine */
2449 if (expect_true (!slf_frame.prepare))
2450 {
2451 /* first iteration */
2452 dSP;
2453 SV **arg = PL_stack_base + TOPMARK + 1;
2454 int items = SP - arg; /* args without function object */
2455 SV *gv = *sp;
2456
2457 /* do a quick consistency check on the "function" object, and if it isn't */
2458 /* for us, divert to the real entersub */
2459 if (SvTYPE (gv) != SVt_PVGV
2460 || !GvCV (gv)
2461 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2462 return PL_ppaddr[OP_ENTERSUB](aTHX);
2463
2464 if (!(PL_op->op_flags & OPf_STACKED))
2465 {
2466 /* ampersand-form of call, use @_ instead of stack */
2467 AV *av = GvAV (PL_defgv);
2468 arg = AvARRAY (av);
2469 items = AvFILLp (av) + 1;
2470 }
2471
2472 /* now call the init function, which needs to set up slf_frame */
2473 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2474 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2475
2476 /* pop args */
2477 SP = PL_stack_base + POPMARK;
2478
2479 PUTBACK;
2480 }
2481
2482 /* now that we have a slf_frame, interpret it! */
2483 /* we use a callback system not to make the code needlessly */
2484 /* complicated, but so we can run multiple perl coros from one cctx */
2485
2486 do
2487 {
2488 struct coro_transfer_args ta;
2489
2490 slf_frame.prepare (aTHX_ &ta);
2491 TRANSFER (ta, 0);
2492
2493 checkmark = PL_stack_sp - PL_stack_base;
2494 }
2495 while (slf_frame.check (aTHX_ &slf_frame));
2496
2497 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2498
2499 /* exception handling */
2500 if (expect_false (CORO_THROW))
2501 {
2502 SV *exception = sv_2mortal (CORO_THROW);
2503
2504 CORO_THROW = 0;
2505 sv_setsv (ERRSV, exception);
2506 croak (0);
2507 }
2508
2509 /* return value handling - mostly like entersub */
2510 /* make sure we put something on the stack in scalar context */
2511 if (GIMME_V == G_SCALAR)
2512 {
2513 dSP;
2514 SV **bot = PL_stack_base + checkmark;
2515
2516 if (sp == bot) /* too few, push undef */
2517 bot [1] = &PL_sv_undef;
2518 else if (sp != bot + 1) /* too many, take last one */
2519 bot [1] = *sp;
2520
2521 SP = bot + 1;
2522
2523 PUTBACK;
2524 }
2525
2526 return NORMAL;
2527}
2528
2529static void
2530api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2531{
2532 int i;
2533 SV **arg = PL_stack_base + ax;
2534 int items = PL_stack_sp - arg + 1;
2535
2536 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2537
2538 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2539 && PL_op->op_ppaddr != pp_slf)
2540 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2541
2542 CvFLAGS (cv) |= CVf_SLF;
2543 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2544 slf_cv = cv;
2545
2546 /* we patch the op, and then re-run the whole call */
2547 /* we have to put the same argument on the stack for this to work */
2548 /* and this will be done by pp_restore */
2549 slf_restore.op_next = (OP *)&slf_restore;
2550 slf_restore.op_type = OP_CUSTOM;
2551 slf_restore.op_ppaddr = pp_restore;
2552 slf_restore.op_first = PL_op;
2553
2554 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2555
2556 if (PL_op->op_flags & OPf_STACKED)
2557 {
2558 if (items > slf_arga)
2559 {
2560 slf_arga = items;
2561 Safefree (slf_argv);
2562 New (0, slf_argv, slf_arga, SV *);
2563 }
2564
2565 slf_argc = items;
2566
2567 for (i = 0; i < items; ++i)
2568 slf_argv [i] = SvREFCNT_inc (arg [i]);
2569 }
2570 else
2571 slf_argc = 0;
2572
2573 PL_op->op_ppaddr = pp_slf;
2574 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2575
2576 PL_op = (OP *)&slf_restore;
2577}
2578
2579/*****************************************************************************/
2580/* dynamic wind */
2581
2582static void
2583on_enterleave_call (pTHX_ SV *cb)
2584{
2585 dSP;
2586
2587 PUSHSTACK;
2588
2589 PUSHMARK (SP);
2590 PUTBACK;
2591 call_sv (cb, G_VOID | G_DISCARD);
2592 SPAGAIN;
2593
2594 POPSTACK;
2595}
2596
2597static SV *
2598coro_avp_pop_and_free (pTHX_ AV **avp)
2599{
2600 AV *av = *avp;
2601 SV *res = av_pop (av);
2602
2603 if (AvFILLp (av) < 0)
2604 {
2605 *avp = 0;
2606 SvREFCNT_dec (av);
2607 }
2608
2609 return res;
2610}
2611
2612static void
2613coro_pop_on_enter (pTHX_ void *coro)
2614{
2615 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2616 SvREFCNT_dec (cb);
2617}
2618
2619static void
2620coro_pop_on_leave (pTHX_ void *coro)
2621{
2622 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2623 on_enterleave_call (aTHX_ sv_2mortal (cb));
1697} 2624}
1698 2625
1699/*****************************************************************************/ 2626/*****************************************************************************/
1700/* PerlIO::cede */ 2627/* PerlIO::cede */
1701 2628
… …
1770 PerlIOBuf_get_cnt, 2697 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 2698 PerlIOBuf_set_ptrcnt,
1772}; 2699};
1773 2700
1774/*****************************************************************************/ 2701/*****************************************************************************/
2702/* Coro::Semaphore & Coro::Signal */
1775 2703
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 2704static SV *
1787pp_restore (pTHX) 2705coro_waitarray_new (pTHX_ int count)
1788{ 2706{
1789 dSP; 2707 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2708 AV *av = newAV ();
2709 SV **ary;
1790 2710
1791 PUSHMARK (SP); 2711 /* unfortunately, building manually saves memory */
2712 Newx (ary, 2, SV *);
2713 AvALLOC (av) = ary;
2714#if PERL_VERSION_ATLEAST (5,10,0)
2715 AvARRAY (av) = ary;
2716#else
2717 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2718 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2719 SvPVX ((SV *)av) = (char *)ary;
2720#endif
2721 AvMAX (av) = 1;
2722 AvFILLp (av) = 0;
2723 ary [0] = newSViv (count);
1792 2724
1793 EXTEND (SP, 3); 2725 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 2726}
1801 2727
1802static void 2728/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 2729
1808static void 2730static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 2731coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 2732{
1981 SV *count_sv = AvARRAY (av)[0]; 2733 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 2734 IV count = SvIVX (count_sv);
1983 2735
1984 count += adjust; 2736 count += adjust;
1985 SvIVX (count_sv) = count; 2737 SvIVX (count_sv) = count;
1986 2738
1987 /* now wake up as many waiters as possible */ 2739 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 2740 while (count > 0 && AvFILLp (av) > 0)
1989 { 2741 {
1990 SV *cb; 2742 SV *cb;
1991 2743
1992 /* swap first two elements so we can shift a waiter */ 2744 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 2745 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 2746 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 2747 cb = av_shift (av);
1996 2748
1997 if (SvOBJECT (cb)) 2749 if (SvOBJECT (cb))
2750 {
1998 api_ready (aTHX_ cb); 2751 api_ready (aTHX_ cb);
1999 else 2752 --count;
2000 croak ("callbacks not yet supported"); 2753 }
2754 else if (SvTYPE (cb) == SVt_PVCV)
2755 {
2756 dSP;
2757 PUSHMARK (SP);
2758 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2759 PUTBACK;
2760 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2761 }
2001 2762
2002 SvREFCNT_dec (cb); 2763 SvREFCNT_dec (cb);
2003
2004 --count;
2005 } 2764 }
2006} 2765}
2007 2766
2008static void 2767static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2768coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{ 2769{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 2770 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 2771 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2013} 2772}
2014 2773
2015static int 2774static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2775slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 2776{
2018 AV *av = (AV *)frame->data; 2777 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 2778 SV *count_sv = AvARRAY (av)[0];
2020 2779
2780 /* if we are about to throw, don't actually acquire the lock, just throw */
2781 if (CORO_THROW)
2782 return 0;
2021 if (SvIVX (count_sv) > 0) 2783 else if (SvIVX (count_sv) > 0)
2022 { 2784 {
2023 SvSTATE (coro_current)->on_destroy = 0; 2785 SvSTATE_current->on_destroy = 0;
2786
2787 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2788 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2789 else
2790 coro_semaphore_adjust (aTHX_ av, 0);
2791
2025 return 0; 2792 return 0;
2026 } 2793 }
2027 else 2794 else
2028 { 2795 {
2029 int i; 2796 int i;
… …
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2805 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1; 2806 return 1;
2040 } 2807 }
2041} 2808}
2042 2809
2043static void 2810static int
2811slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2812{
2813 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2814}
2815
2816static int
2817slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2818{
2819 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2820}
2821
2822static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2823slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 2824{
2046 AV *av = (AV *)SvRV (arg [0]); 2825 AV *av = (AV *)SvRV (arg [0]);
2047 2826
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 2827 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 2828 {
… …
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2836 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 2837 frame->prepare = prepare_schedule;
2059 2838
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 2839 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2840 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 2841 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2842 }
2843}
2064 2844
2845static void
2846slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2847{
2848 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2849 frame->check = slf_check_semaphore_down;
2850}
2066 2851
2852static void
2853slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2854{
2855 if (items >= 2)
2856 {
2857 /* callback form */
2858 AV *av = (AV *)SvRV (arg [0]);
2859 SV *cb_cv = s_get_cv_croak (arg [1]);
2860
2861 av_push (av, SvREFCNT_inc_NN (cb_cv));
2862
2863 if (SvIVX (AvARRAY (av)[0]) > 0)
2864 coro_semaphore_adjust (aTHX_ av, 0);
2865
2866 frame->prepare = prepare_nop;
2867 frame->check = slf_check_nop;
2868 }
2869 else
2870 {
2871 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2872 frame->check = slf_check_semaphore_wait;
2873 }
2874}
2875
2876/* signal */
2877
2878static void
2879coro_signal_wake (pTHX_ AV *av, int count)
2880{
2881 SvIVX (AvARRAY (av)[0]) = 0;
2882
2883 /* now signal count waiters */
2884 while (count > 0 && AvFILLp (av) > 0)
2885 {
2886 SV *cb;
2887
2888 /* swap first two elements so we can shift a waiter */
2889 cb = AvARRAY (av)[0];
2890 AvARRAY (av)[0] = AvARRAY (av)[1];
2891 AvARRAY (av)[1] = cb;
2892
2893 cb = av_shift (av);
2894
2895 if (SvTYPE (cb) == SVt_PVCV)
2896 {
2897 dSP;
2898 PUSHMARK (SP);
2899 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2900 PUTBACK;
2901 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2902 }
2903 else
2904 {
2905 api_ready (aTHX_ cb);
2906 sv_setiv (cb, 0); /* signal waiter */
2907 }
2908
2909 SvREFCNT_dec (cb);
2910
2911 --count;
2912 }
2913}
2914
2915static int
2916slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2917{
2918 /* if we are about to throw, also stop waiting */
2919 return SvROK ((SV *)frame->data) && !CORO_THROW;
2920}
2921
2922static void
2923slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2924{
2925 AV *av = (AV *)SvRV (arg [0]);
2926
2927 if (items >= 2)
2928 {
2929 SV *cb_cv = s_get_cv_croak (arg [1]);
2930 av_push (av, SvREFCNT_inc_NN (cb_cv));
2931
2932 if (SvIVX (AvARRAY (av)[0]))
2933 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2934
2935 frame->prepare = prepare_nop;
2936 frame->check = slf_check_nop;
2937 }
2938 else if (SvIVX (AvARRAY (av)[0]))
2939 {
2940 SvIVX (AvARRAY (av)[0]) = 0;
2941 frame->prepare = prepare_nop;
2942 frame->check = slf_check_nop;
2943 }
2944 else
2945 {
2946 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2947
2948 av_push (av, waiter);
2949
2950 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2951 frame->prepare = prepare_schedule;
2952 frame->check = slf_check_signal_wait;
2953 }
2067} 2954}
2068 2955
2069/*****************************************************************************/ 2956/*****************************************************************************/
2957/* Coro::AIO */
2070 2958
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2959#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 2960
2073/* create a closure from XS, returns a code reference */ 2961/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 2962struct io_state
2075/* the callback must use dXSARGS/XSRETURN */ 2963{
2964 int errorno;
2965 I32 laststype; /* U16 in 5.10.0 */
2966 int laststatval;
2967 Stat_t statcache;
2968};
2969
2970static void
2971coro_aio_callback (pTHX_ CV *cv)
2972{
2973 dXSARGS;
2974 AV *state = (AV *)S_GENSUB_ARG;
2975 SV *coro = av_pop (state);
2976 SV *data_sv = newSV (sizeof (struct io_state));
2977
2978 av_extend (state, items - 1);
2979
2980 sv_upgrade (data_sv, SVt_PV);
2981 SvCUR_set (data_sv, sizeof (struct io_state));
2982 SvPOK_only (data_sv);
2983
2984 {
2985 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2986
2987 data->errorno = errno;
2988 data->laststype = PL_laststype;
2989 data->laststatval = PL_laststatval;
2990 data->statcache = PL_statcache;
2991 }
2992
2993 /* now build the result vector out of all the parameters and the data_sv */
2994 {
2995 int i;
2996
2997 for (i = 0; i < items; ++i)
2998 av_push (state, SvREFCNT_inc_NN (ST (i)));
2999 }
3000
3001 av_push (state, data_sv);
3002
3003 api_ready (aTHX_ coro);
3004 SvREFCNT_dec (coro);
3005 SvREFCNT_dec ((AV *)state);
3006}
3007
3008static int
3009slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3010{
3011 AV *state = (AV *)frame->data;
3012
3013 /* if we are about to throw, return early */
3014 /* this does not cancel the aio request, but at least */
3015 /* it quickly returns */
3016 if (CORO_THROW)
3017 return 0;
3018
3019 /* one element that is an RV? repeat! */
3020 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3021 return 1;
3022
3023 /* restore status */
3024 {
3025 SV *data_sv = av_pop (state);
3026 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3027
3028 errno = data->errorno;
3029 PL_laststype = data->laststype;
3030 PL_laststatval = data->laststatval;
3031 PL_statcache = data->statcache;
3032
3033 SvREFCNT_dec (data_sv);
3034 }
3035
3036 /* push result values */
3037 {
3038 dSP;
3039 int i;
3040
3041 EXTEND (SP, AvFILLp (state) + 1);
3042 for (i = 0; i <= AvFILLp (state); ++i)
3043 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3044
3045 PUTBACK;
3046 }
3047
3048 return 0;
3049}
3050
3051static void
3052slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3053{
3054 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3055 SV *coro_hv = SvRV (coro_current);
3056 struct coro *coro = SvSTATE_hv (coro_hv);
3057
3058 /* put our coroutine id on the state arg */
3059 av_push (state, SvREFCNT_inc_NN (coro_hv));
3060
3061 /* first see whether we have a non-zero priority and set it as AIO prio */
3062 if (coro->prio)
3063 {
3064 dSP;
3065
3066 static SV *prio_cv;
3067 static SV *prio_sv;
3068
3069 if (expect_false (!prio_cv))
3070 {
3071 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3072 prio_sv = newSViv (0);
3073 }
3074
3075 PUSHMARK (SP);
3076 sv_setiv (prio_sv, coro->prio);
3077 XPUSHs (prio_sv);
3078
3079 PUTBACK;
3080 call_sv (prio_cv, G_VOID | G_DISCARD);
3081 }
3082
3083 /* now call the original request */
3084 {
3085 dSP;
3086 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3087 int i;
3088
3089 PUSHMARK (SP);
3090
3091 /* first push all args to the stack */
3092 EXTEND (SP, items + 1);
3093
3094 for (i = 0; i < items; ++i)
3095 PUSHs (arg [i]);
3096
3097 /* now push the callback closure */
3098 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3099
3100 /* now call the AIO function - we assume our request is uncancelable */
3101 PUTBACK;
3102 call_sv ((SV *)req, G_VOID | G_DISCARD);
3103 }
3104
3105 /* now that the request is going, we loop till we have a result */
3106 frame->data = (void *)state;
3107 frame->prepare = prepare_schedule;
3108 frame->check = slf_check_aio_req;
3109}
3110
3111static void
3112coro_aio_req_xs (pTHX_ CV *cv)
3113{
3114 dXSARGS;
3115
3116 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3117
3118 XSRETURN_EMPTY;
3119}
3120
3121/*****************************************************************************/
3122
3123#if CORO_CLONE
3124# include "clone.c"
3125#endif
3126
3127/*****************************************************************************/
3128
2076static SV * 3129static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3130coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2078{ 3131{
2079 CV *cv = (CV *)NEWSV (0, 0); 3132 SV *coro_sv;
3133 struct coro *coro;
3134 MAGIC *mg;
3135 HV *hv;
3136 SV *cb;
3137 int i;
2080 3138
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 3139 if (argc > 0)
3140 {
3141 cb = s_get_cv_croak (argv [0]);
2082 3142
2083 CvANON_on (cv); 3143 if (!is_coro)
2084 CvISXSUB_on (cv); 3144 {
2085 CvXSUB (cv) = xsub; 3145 if (CvISXSUB (cb))
2086 GENSUB_ARG = arg; 3146 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2087 3147
2088 return newRV_noinc ((SV *)cv); 3148 if (!CvROOT (cb))
2089} 3149 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3150 }
3151 }
2090 3152
2091/*****************************************************************************/ 3153 Newz (0, coro, 1, struct coro);
3154 coro->args = newAV ();
3155 coro->flags = CF_NEW;
3156
3157 if (coro_first) coro_first->prev = coro;
3158 coro->next = coro_first;
3159 coro_first = coro;
3160
3161 coro->hv = hv = newHV ();
3162 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3163 mg->mg_flags |= MGf_DUP;
3164 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3165
3166 if (argc > 0)
3167 {
3168 av_extend (coro->args, argc + is_coro - 1);
3169
3170 if (is_coro)
3171 {
3172 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3173 cb = (SV *)cv_coro_run;
3174 }
3175
3176 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3177
3178 for (i = 1; i < argc; i++)
3179 av_push (coro->args, newSVsv (argv [i]));
3180 }
3181
3182 return coro_sv;
3183}
2092 3184
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3185MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2094 3186
2095PROTOTYPES: DISABLE 3187PROTOTYPES: DISABLE
2096 3188
2097BOOT: 3189BOOT:
2098{ 3190{
2099#ifdef USE_ITHREADS 3191#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 3192# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 3193 coro_thx = PERL_GET_CONTEXT;
2103# endif 3194# endif
2104#endif 3195#endif
2105 BOOT_PAGESIZE; 3196 BOOT_PAGESIZE;
2106 3197
3198 cctx_current = cctx_new_empty ();
3199
2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3200 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3201 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2109 3202
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3203 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2111 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3204 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2130 3223
2131 { 3224 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3225 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 3226
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3227 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 3228 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 3229
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3230 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 3231 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 3232 }
2142 3233
2143 coroapi.ver = CORO_API_VERSION; 3234 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 3235 coroapi.rev = CORO_API_REVISION;
2145 3236
… …
2150 coroapi.prepare_nop = prepare_nop; 3241 coroapi.prepare_nop = prepare_nop;
2151 coroapi.prepare_schedule = prepare_schedule; 3242 coroapi.prepare_schedule = prepare_schedule;
2152 coroapi.prepare_cede = prepare_cede; 3243 coroapi.prepare_cede = prepare_cede;
2153 coroapi.prepare_cede_notself = prepare_cede_notself; 3244 coroapi.prepare_cede_notself = prepare_cede_notself;
2154 3245
2155 { 3246 time_init (aTHX);
2156 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2157 3247
2158 if (!svp) croak ("Time::HiRes is required");
2159 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2160
2161 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2162 }
2163
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3248 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2165} 3249}
2166 3250
2167SV * 3251SV *
2168new (char *klass, ...) 3252new (SV *klass, ...)
3253 ALIAS:
3254 Coro::new = 1
2169 CODE: 3255 CODE:
2170{ 3256 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2171 struct coro *coro; 3257 OUTPUT:
2172 MAGIC *mg;
2173 HV *hv;
2174 int i;
2175
2176 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV ();
2178 coro->flags = CF_NEW;
2179
2180 if (coro_first) coro_first->prev = coro;
2181 coro->next = coro_first;
2182 coro_first = coro;
2183
2184 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188
2189 av_extend (coro->args, items - 1);
2190 for (i = 1; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i)));
2192}
2193 OUTPUT:
2194 RETVAL 3258 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 3259
2201void 3260void
2202transfer (...) 3261transfer (...)
2203 PROTOTYPE: $$ 3262 PROTOTYPE: $$
2204 CODE: 3263 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3264 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206
2207bool
2208_destroy (SV *coro_sv)
2209 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2211 OUTPUT:
2212 RETVAL
2213 3265
2214void 3266void
2215_exit (int code) 3267_exit (int code)
2216 PROTOTYPE: $ 3268 PROTOTYPE: $
2217 CODE: 3269 CODE:
2218 _exit (code); 3270 _exit (code);
3271
3272SV *
3273clone (Coro::State coro)
3274 CODE:
3275{
3276#if CORO_CLONE
3277 struct coro *ncoro = coro_clone (aTHX_ coro);
3278 MAGIC *mg;
3279 /* TODO: too much duplication */
3280 ncoro->hv = newHV ();
3281 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3282 mg->mg_flags |= MGf_DUP;
3283 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3284#else
3285 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3286#endif
3287}
3288 OUTPUT:
3289 RETVAL
2219 3290
2220int 3291int
2221cctx_stacksize (int new_stacksize = 0) 3292cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$ 3293 PROTOTYPE: ;$
2223 CODE: 3294 CODE:
… …
2273 eval = 1 3344 eval = 1
2274 CODE: 3345 CODE:
2275{ 3346{
2276 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3347 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2277 { 3348 {
2278 struct coro temp; 3349 struct coro *current = SvSTATE_current;
3350 struct CoroSLF slf_save;
2279 3351
2280 if (!(coro->flags & CF_RUNNING)) 3352 if (current != coro)
2281 { 3353 {
2282 PUTBACK; 3354 PUTBACK;
2283 save_perl (aTHX_ &temp); 3355 save_perl (aTHX_ current);
2284 load_perl (aTHX_ coro); 3356 load_perl (aTHX_ coro);
3357 /* the coro is most likely in an active SLF call.
3358 * while not strictly required (the code we execute is
3359 * not allowed to call any SLF functions), it's cleaner
3360 * to reinitialise the slf_frame and restore it later.
3361 * This might one day allow us to actually do SLF calls
3362 * from code executed here.
3363 */
3364 slf_save = slf_frame;
3365 slf_frame.prepare = 0;
3366 SPAGAIN;
2285 } 3367 }
2286 3368
2287 {
2288 dSP;
2289 ENTER;
2290 SAVETMPS;
2291 PUTBACK;
2292 PUSHSTACK; 3369 PUSHSTACK;
3370
2293 PUSHMARK (SP); 3371 PUSHMARK (SP);
3372 PUTBACK;
2294 3373
2295 if (ix) 3374 if (ix)
2296 eval_sv (coderef, 0); 3375 eval_sv (coderef, 0);
2297 else 3376 else
2298 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3377 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2299 3378
2300 POPSTACK; 3379 POPSTACK;
2301 SPAGAIN; 3380 SPAGAIN;
2302 FREETMPS;
2303 LEAVE;
2304 PUTBACK;
2305 }
2306 3381
2307 if (!(coro->flags & CF_RUNNING)) 3382 if (current != coro)
2308 { 3383 {
3384 PUTBACK;
3385 slf_frame = slf_save;
2309 save_perl (aTHX_ coro); 3386 save_perl (aTHX_ coro);
2310 load_perl (aTHX_ &temp); 3387 load_perl (aTHX_ current);
2311 SPAGAIN; 3388 SPAGAIN;
2312 } 3389 }
2313 } 3390 }
2314} 3391}
2315 3392
… …
2319 ALIAS: 3396 ALIAS:
2320 is_ready = CF_READY 3397 is_ready = CF_READY
2321 is_running = CF_RUNNING 3398 is_running = CF_RUNNING
2322 is_new = CF_NEW 3399 is_new = CF_NEW
2323 is_destroyed = CF_DESTROYED 3400 is_destroyed = CF_DESTROYED
3401 is_suspended = CF_SUSPENDED
2324 CODE: 3402 CODE:
2325 RETVAL = boolSV (coro->flags & ix); 3403 RETVAL = boolSV (coro->flags & ix);
2326 OUTPUT: 3404 OUTPUT:
2327 RETVAL 3405 RETVAL
2328 3406
2329void 3407void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 3408throw (Coro::State self, SV *exception = &PL_sv_undef)
2331 PROTOTYPE: $;$ 3409 PROTOTYPE: $;$
2332 CODE: 3410 CODE:
3411{
3412 struct coro *current = SvSTATE_current;
3413 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2333 SvREFCNT_dec (self->throw); 3414 SvREFCNT_dec (*exceptionp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3415 SvGETMAGIC (exception);
3416 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3417}
2335 3418
2336void 3419void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3420api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 3421 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3422 C_ARGS: aTHX_ coro, flags
2340 3423
2341SV * 3424SV *
2342has_cctx (Coro::State coro) 3425has_cctx (Coro::State coro)
2343 PROTOTYPE: $ 3426 PROTOTYPE: $
2344 CODE: 3427 CODE:
2345 RETVAL = boolSV (!!coro->cctx); 3428 /* maybe manage the running flag differently */
3429 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2346 OUTPUT: 3430 OUTPUT:
2347 RETVAL 3431 RETVAL
2348 3432
2349int 3433int
2350is_traced (Coro::State coro) 3434is_traced (Coro::State coro)
… …
2370 3454
2371void 3455void
2372force_cctx () 3456force_cctx ()
2373 PROTOTYPE: 3457 PROTOTYPE:
2374 CODE: 3458 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3459 cctx_current->idle_sp = 0;
2377 3460
2378void 3461void
2379swap_defsv (Coro::State self) 3462swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3463 PROTOTYPE: $
2381 ALIAS: 3464 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3472 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3473
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3474 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3475 }
2393 3476
3477void
3478cancel (Coro::State self)
3479 CODE:
3480 coro_state_destroy (aTHX_ self);
3481
3482SV *
3483enable_times (int enabled = enable_times)
3484 CODE:
3485{
3486 RETVAL = boolSV (enable_times);
3487
3488 if (enabled != enable_times)
3489 {
3490 enable_times = enabled;
3491
3492 coro_times_update ();
3493 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3494 }
3495}
3496 OUTPUT:
3497 RETVAL
3498
3499void
3500times (Coro::State self)
3501 PPCODE:
3502{
3503 struct coro *current = SvSTATE (coro_current);
3504
3505 if (expect_false (current == self))
3506 {
3507 coro_times_update ();
3508 coro_times_add (SvSTATE (coro_current));
3509 }
3510
3511 EXTEND (SP, 2);
3512 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3513 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3514
3515 if (expect_false (current == self))
3516 coro_times_sub (SvSTATE (coro_current));
3517}
3518
3519void
3520swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3521 CODE:
3522{
3523 struct coro *current = SvSTATE_current;
3524
3525 if (current == coro)
3526 SWAP_SVS (current);
3527
3528 if (!coro->swap_sv)
3529 coro->swap_sv = newAV ();
3530
3531 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3532 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3533
3534 if (current == coro)
3535 SWAP_SVS (current);
3536}
3537
3538
2394MODULE = Coro::State PACKAGE = Coro 3539MODULE = Coro::State PACKAGE = Coro
2395 3540
2396BOOT: 3541BOOT:
2397{ 3542{
2398 int i;
2399
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3543 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3544 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 3545 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3546 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3547 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 3548 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3549 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3550 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3551 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2406 3552
3553 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3554 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3555 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3556 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3557
2407 coro_stash = gv_stashpv ("Coro", TRUE); 3558 coro_stash = gv_stashpv ("Coro", TRUE);
2408 3559
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3560 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3561 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2411 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3562 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2412 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3563 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2413 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3564 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2414 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3565 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2415
2416 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2417 coro_ready[i] = newAV ();
2418 3566
2419 { 3567 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3568 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 3569
2422 coroapi.schedule = api_schedule; 3570 coroapi.schedule = api_schedule;
3571 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 3572 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 3573 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 3574 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 3575 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 3576 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 3577 coroapi.current = coro_current;
2429 3578
2430 GCoroAPI = &coroapi; 3579 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 3580 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 3581 SvREADONLY_on (sv);
2433 } 3582 }
2434} 3583}
2435 3584
3585SV *
3586async (...)
3587 PROTOTYPE: &@
3588 CODE:
3589 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3590 api_ready (aTHX_ RETVAL);
3591 OUTPUT:
3592 RETVAL
3593
3594void
3595_destroy (Coro::State coro)
3596 CODE:
3597 /* used by the manager thread */
3598 coro_state_destroy (aTHX_ coro);
3599 coro_call_on_destroy (aTHX_ coro);
3600
3601void
3602terminate (...)
3603 CODE:
3604 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3605
3606void
3607cancel (...)
3608 CODE:
3609 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3610
2436void 3611void
2437schedule (...) 3612schedule (...)
2438 CODE: 3613 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3614 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3615
3616void
3617schedule_to (...)
3618 CODE:
3619 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3620
3621void
3622cede_to (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 3625
2441void 3626void
2442cede (...) 3627cede (...)
2443 CODE: 3628 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3629 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 3630
2446void 3631void
2447cede_notself (...) 3632cede_notself (...)
2448 CODE: 3633 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3634 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2450 3635
2451void 3636void
2452_set_current (SV *current) 3637_set_current (SV *current)
2453 PROTOTYPE: $ 3638 PROTOTYPE: $
2454 CODE: 3639 CODE:
… …
2458void 3643void
2459_set_readyhook (SV *hook) 3644_set_readyhook (SV *hook)
2460 PROTOTYPE: $ 3645 PROTOTYPE: $
2461 CODE: 3646 CODE:
2462 SvREFCNT_dec (coro_readyhook); 3647 SvREFCNT_dec (coro_readyhook);
3648 SvGETMAGIC (hook);
3649 if (SvOK (hook))
3650 {
2463 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3651 coro_readyhook = newSVsv (hook);
3652 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3653 }
3654 else
3655 {
3656 coro_readyhook = 0;
3657 CORO_READYHOOK = 0;
3658 }
2464 3659
2465int 3660int
2466prio (Coro::State coro, int newprio = 0) 3661prio (Coro::State coro, int newprio = 0)
2467 PROTOTYPE: $;$ 3662 PROTOTYPE: $;$
2468 ALIAS: 3663 ALIAS:
… …
2474 if (items > 1) 3669 if (items > 1)
2475 { 3670 {
2476 if (ix) 3671 if (ix)
2477 newprio = coro->prio - newprio; 3672 newprio = coro->prio - newprio;
2478 3673
2479 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3674 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2480 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3675 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2481 3676
2482 coro->prio = newprio; 3677 coro->prio = newprio;
2483 } 3678 }
2484} 3679}
2485 OUTPUT: 3680 OUTPUT:
… …
2499 CODE: 3694 CODE:
2500 RETVAL = coro_nready; 3695 RETVAL = coro_nready;
2501 OUTPUT: 3696 OUTPUT:
2502 RETVAL 3697 RETVAL
2503 3698
2504# for async_pool speedup
2505void 3699void
2506_pool_1 (SV *cb) 3700suspend (Coro::State self)
3701 PROTOTYPE: $
2507 CODE: 3702 CODE:
2508{ 3703 self->flags |= CF_SUSPENDED;
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515 3704
2516 if (!invoke) 3705void
3706resume (Coro::State self)
3707 PROTOTYPE: $
3708 CODE:
3709 self->flags &= ~CF_SUSPENDED;
3710
3711void
3712_pool_handler (...)
3713 CODE:
3714 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3715
3716void
3717async_pool (SV *cv, ...)
3718 PROTOTYPE: &@
3719 PPCODE:
3720{
3721 HV *hv = (HV *)av_pop (av_async_pool);
3722 AV *av = newAV ();
3723 SV *cb = ST (0);
3724 int i;
3725
3726 av_extend (av, items - 2);
3727 for (i = 1; i < items; ++i)
3728 av_push (av, SvREFCNT_inc_NN (ST (i)));
3729
3730 if ((SV *)hv == &PL_sv_undef)
2517 { 3731 {
2518 SV *old = PL_diehook; 3732 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2519 PL_diehook = 0; 3733 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2520 SvREFCNT_dec (old); 3734 SvREFCNT_dec (sv);
2521 croak ("\3async_pool terminate\2\n");
2522 } 3735 }
2523 3736
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 { 3737 {
2537 av_fill (defav, len - 1); 3738 struct coro *coro = SvSTATE_hv (hv);
2538 for (i = 0; i < len; ++i) 3739
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3740 assert (!coro->invoke_cb);
3741 assert (!coro->invoke_av);
3742 coro->invoke_cb = SvREFCNT_inc (cb);
3743 coro->invoke_av = av;
2540 } 3744 }
3745
3746 api_ready (aTHX_ (SV *)hv);
3747
3748 if (GIMME_V != G_VOID)
3749 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3750 else
3751 SvREFCNT_dec (hv);
2541} 3752}
3753
3754SV *
3755rouse_cb ()
3756 PROTOTYPE:
3757 CODE:
3758 RETVAL = coro_new_rouse_cb (aTHX);
3759 OUTPUT:
3760 RETVAL
2542 3761
2543void 3762void
2544_pool_2 (SV *cb) 3763rouse_wait (...)
3764 PROTOTYPE: ;$
3765 PPCODE:
3766 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3767
3768void
3769on_enter (SV *block)
3770 ALIAS:
3771 on_leave = 1
3772 PROTOTYPE: &
2545 CODE: 3773 CODE:
2546{ 3774{
2547 struct coro *coro = SvSTATE (coro_current); 3775 struct coro *coro = SvSTATE_current;
3776 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2548 3777
2549 sv_setsv (cb, &PL_sv_undef); 3778 block = s_get_cv_croak (block);
2550 3779
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3780 if (!*avp)
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $
2581 PPCODE:
2582{
2583 AV *defav = GvAV (PL_defgv);
2584 AV *av = newAV (); 3781 *avp = newAV ();
2585 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 3782
2591 data->errorno = errno; 3783 av_push (*avp, SvREFCNT_inc (block));
2592 data->laststype = PL_laststype;
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595 3784
2596 av_extend (av, AvFILLp (defav) + 1 + 1); 3785 if (!ix)
3786 on_enterleave_call (aTHX_ block);
2597 3787
2598 for (i = 0; i <= AvFILLp (defav); ++i) 3788 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3789 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2600 3790 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655} 3791}
2656 3792
2657 3793
2658MODULE = Coro::State PACKAGE = PerlIO::cede 3794MODULE = Coro::State PACKAGE = PerlIO::cede
2659 3795
2660BOOT: 3796BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3797 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 3798
3799
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 3800MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 3801
2665SV * 3802SV *
2666new (SV *klass, SV *count_ = 0) 3803new (SV *klass, SV *count = 0)
2667 CODE: 3804 CODE:
2668{ 3805{
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3806 int semcnt = 1;
2670 AV *av = newAV (); 3807
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3808 if (count)
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3809 {
3810 SvGETMAGIC (count);
3811
3812 if (SvOK (count))
3813 semcnt = SvIV (count);
3814 }
3815
3816 RETVAL = sv_bless (
3817 coro_waitarray_new (aTHX_ semcnt),
3818 GvSTASH (CvGV (cv))
3819 );
2673} 3820}
3821 OUTPUT:
3822 RETVAL
3823
3824# helper for Coro::Channel and others
3825SV *
3826_alloc (int count)
3827 CODE:
3828 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 3829 OUTPUT:
2675 RETVAL 3830 RETVAL
2676 3831
2677SV * 3832SV *
2678count (SV *self) 3833count (SV *self)
… …
2684void 3839void
2685up (SV *self, int adjust = 1) 3840up (SV *self, int adjust = 1)
2686 ALIAS: 3841 ALIAS:
2687 adjust = 1 3842 adjust = 1
2688 CODE: 3843 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 3844 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2690 3845
2691void 3846void
2692down (SV *self) 3847down (...)
2693 CODE: 3848 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3849 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3850
3851void
3852wait (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 3855
2696void 3856void
2697try (SV *self) 3857try (SV *self)
2698 PPCODE: 3858 PPCODE:
2699{ 3859{
… …
2711 XSRETURN_NO; 3871 XSRETURN_NO;
2712} 3872}
2713 3873
2714void 3874void
2715waiters (SV *self) 3875waiters (SV *self)
2716 CODE: 3876 PPCODE:
2717{ 3877{
2718 AV *av = (AV *)SvRV (self); 3878 AV *av = (AV *)SvRV (self);
3879 int wcount = AvFILLp (av) + 1 - 1;
2719 3880
2720 if (GIMME_V == G_SCALAR) 3881 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3882 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 3883 else
2723 { 3884 {
2724 int i; 3885 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 3886 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 3887 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 3888 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 3889 }
2729} 3890}
2730 3891
3892MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3893
3894void
3895_may_delete (SV *sem, int count, int extra_refs)
3896 PPCODE:
3897{
3898 AV *av = (AV *)SvRV (sem);
3899
3900 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3901 && AvFILLp (av) == 0 /* no waiters, just count */
3902 && SvIV (AvARRAY (av)[0]) == count)
3903 XSRETURN_YES;
3904
3905 XSRETURN_NO;
3906}
3907
3908MODULE = Coro::State PACKAGE = Coro::Signal
3909
3910SV *
3911new (SV *klass)
3912 CODE:
3913 RETVAL = sv_bless (
3914 coro_waitarray_new (aTHX_ 0),
3915 GvSTASH (CvGV (cv))
3916 );
3917 OUTPUT:
3918 RETVAL
3919
3920void
3921wait (...)
3922 CODE:
3923 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3924
3925void
3926broadcast (SV *self)
3927 CODE:
3928{
3929 AV *av = (AV *)SvRV (self);
3930 coro_signal_wake (aTHX_ av, AvFILLp (av));
3931}
3932
3933void
3934send (SV *self)
3935 CODE:
3936{
3937 AV *av = (AV *)SvRV (self);
3938
3939 if (AvFILLp (av))
3940 coro_signal_wake (aTHX_ av, 1);
3941 else
3942 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3943}
3944
3945IV
3946awaited (SV *self)
3947 CODE:
3948 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3949 OUTPUT:
3950 RETVAL
3951
3952
3953MODULE = Coro::State PACKAGE = Coro::AnyEvent
3954
3955BOOT:
3956 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3957
3958void
3959_schedule (...)
3960 CODE:
3961{
3962 static int incede;
3963
3964 api_cede_notself (aTHX);
3965
3966 ++incede;
3967 while (coro_nready >= incede && api_cede (aTHX))
3968 ;
3969
3970 sv_setsv (sv_activity, &PL_sv_undef);
3971 if (coro_nready >= incede)
3972 {
3973 PUSHMARK (SP);
3974 PUTBACK;
3975 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3976 }
3977
3978 --incede;
3979}
3980
3981
3982MODULE = Coro::State PACKAGE = Coro::AIO
3983
3984void
3985_register (char *target, char *proto, SV *req)
3986 CODE:
3987{
3988 SV *req_cv = s_get_cv_croak (req);
3989 /* newXSproto doesn't return the CV on 5.8 */
3990 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3991 sv_setpv ((SV *)slf_cv, proto);
3992 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3993}
3994
3995MODULE = Coro::State PACKAGE = Coro::Select
3996
3997void
3998patch_pp_sselect ()
3999 CODE:
4000 if (!coro_old_pp_sselect)
4001 {
4002 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4003 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4004 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4005 }
4006
4007void
4008unpatch_pp_sselect ()
4009 CODE:
4010 if (coro_old_pp_sselect)
4011 {
4012 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4013 coro_old_pp_sselect = 0;
4014 }
4015

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