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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC vs.
Revision 1.397 by root, Fri May 6 21:15:17 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);
131static void slf_destroy (pTHX_ struct coro *coro);
163 132
164static U32 cctx_gen; 133static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 137static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
172static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 147static SV *rv_diehook;
175static SV *rv_warnhook; 148static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
177 150
178/* async_pool helper stuff */ 151/* async_pool helper stuff */
179static SV *sv_pool_rss; 152static SV *sv_pool_rss;
180static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
182 158
183/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
184static SV *sv_activity; 160static SV *sv_activity;
161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
185 167
186static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
188 170
189enum { 171enum {
… …
215 int valgrind_id; 197 int valgrind_id;
216#endif 198#endif
217 unsigned char flags; 199 unsigned char flags;
218} coro_cctx; 200} coro_cctx;
219 201
202static coro_cctx *cctx_current; /* the currently running cctx */
203
204/*****************************************************************************/
205
220enum { 206enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv; 218 SV *defsv;
231 AV *defav; 219 AV *defav;
232 SV *errsv; 220 SV *errsv;
233 SV *irsgv; 221 SV *irsgv;
222 HV *hinthv;
234#define VAR(name,type) type name; 223#define VAR(name,type) type name;
235# include "state.h" 224# include "state.h"
236#undef VAR 225#undef VAR
237} perl_slots; 226} perl_slots;
238 227
… …
241/* this is a structure representing a perl-level coroutine */ 230/* this is a structure representing a perl-level coroutine */
242struct coro { 231struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 232 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 233 coro_cctx *cctx;
245 234
235 /* ready queue */
236 struct coro *next_ready;
237
246 /* state data */ 238 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 239 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 240 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 241 perl_slots *slot; /* basically the saved sp */
250 242
243 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 248
257 /* statistics */ 249 /* statistics */
258 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
259 251
260 /* coro process data */ 252 /* coro process data */
261 int prio; 253 int prio;
262 SV *throw; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
255 SV *rouse_cb;
263 256
264 /* async_pool */ 257 /* async_pool */
265 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;
266 271
267 /* linked list */ 272 /* linked list */
268 struct coro *next, *prev; 273 struct coro *next, *prev;
269}; 274};
270 275
271typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
273 278
274/* the following variables are effectively part of the perl context */ 279/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 280/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 281/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 283
280/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
281 285
282#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
288 292
289/* for Coro.pm */ 293/* for Coro.pm */
290static SV *coro_current; 294static SV *coro_current;
291static SV *coro_readyhook; 295static SV *coro_readyhook;
292static 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;
293static struct coro *coro_first; 298static struct coro *coro_first;
294#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
295 372
296/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
297 374
298static SV * 375static SV *
299coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
323 get_hv (name, create); 400 get_hv (name, create);
324#endif 401#endif
325 return get_hv (name, create); 402 return get_hv (name, create);
326} 403}
327 404
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
328static AV * 504static AV *
329coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
330{ 506{
331 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
333 509
334 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 516#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 518 --AvFILLp (padlist);
343 519
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
346 522
347 return newpadlist; 523 return newpadlist;
348} 524}
349 525
350static void 526static void
351free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
352{ 528{
353 /* may be during global destruction */ 529 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
355 { 531 {
356 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
357 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
358 { 535 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
360 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 538 I32 j = AvFILLp (av);
362 SV *sv; 539
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 545 }
369 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
371 } 551 }
372} 552}
373 553
374static int 554static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 556{
377 AV *padlist; 557 AV *padlist;
378 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;
379 563
380 /* casting is fun. */ 564 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
383 567
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 569
386 return 0; 570 return 0;
387} 571}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 572
392static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 574 0, 0, 0, 0,
394 coro_cv_free 575 coro_cv_free
395}; 576};
396
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 577
446/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
447static void 579static void
448get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
449{ 581{
… …
455 else 587 else
456 { 588 {
457#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
464#else 596#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 598#endif
467 } 599 }
468} 600}
469 601
470static void 602static void
… …
477 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);
478 610
479 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
480 612
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
483 615
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 617}
486 618
487/** 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);
488 674
489static void 675static void
490load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
491{ 677{
492 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
493 c->slot = 0; 679 c->slot = 0;
494 680
495 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
496 682
497 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
501 688
502 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
503 # include "state.h" 690 # include "state.h"
504 #undef VAR 691 #undef VAR
505 692
… …
518 705
519 PUTBACK; 706 PUTBACK;
520 } 707 }
521 708
522 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 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);
524} 729}
525 730
526static void 731static void
527save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
528{ 733{
529 c->throw = coro_throw; 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;
530 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
531 754
532 { 755 {
533 dSP; 756 dSP;
534 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
546 { 769 {
547 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
548 { 771 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
550 773
551 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))
552 { 775 {
553 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
554 777
555 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
556 { 779 {
… …
580 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
581 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
582 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
583 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
584 { 807 {
585 int i; 808 unsigned int i;
586 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
587 CXINC; 810 CXINC;
588 } 811 }
589 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
590 813
591 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
592 815
593 { 816 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 818
596 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
598 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
600 824
601 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
602 # include "state.h" 826 # include "state.h"
603 #undef VAR 827 #undef VAR
604 } 828 }
… …
609 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
612 */ 836 */
613#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
615#else 839#else
616static void 840static void
617coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
618{ 842{
619 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 8);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 907 Safefree (PL_retstack);
684#endif 908#endif
685} 909}
686 910
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
687static size_t 920static size_t
688coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
689{ 922{
690 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
691 924
692 if (coro->mainstack) 925 if (coro->mainstack)
693 { 926 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
698 { 928 {
699 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
700 930 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 931 #undef SYM
704 } 932 }
705 else 933 else
706 slot = coro->slot;
707
708 if (slot)
709 { 934 {
710 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 938 }
722 } 939 }
723 940
724 return rss; 941 return rss;
725} 942}
… …
738#endif 955#endif
739 956
740/* 957/*
741 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
742 * 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
743 * 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
744 * readback here. 961 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 962 */
749static int 963static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 965{
752 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 1020
807 if (svp) 1021 if (svp)
808 { 1022 {
809 SV *old = *svp; 1023 SV *old = *svp;
810 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
812 return 0; 1026 return 0;
813 } 1027 }
814 } 1028 }
815 1029
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 1042{
829 return 0; 1043 return 0;
830} 1044}
831 1045
1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
1053
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
834{ 1056{
835 /* 1057 /*
836 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
837 */ 1059 */
838 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
839 1061
840 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1069 PL_curpm = 0;
845 PL_curpad = 0; 1070 PL_curpad = 0;
846 PL_localizing = 0; 1071 PL_localizing = 0;
847 PL_dirty = 0;
848 PL_restartop = 0; 1072 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1074 PL_parser = 0;
851#endif 1075#endif
1076 PL_hints = 0;
852 1077
853 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
854 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 );
855 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);
856 1081
857 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
860 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;
861 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1089
864 { 1090 {
865 dSP; 1091 dSP;
866 UNOP myop; 1092 UNOP myop;
867 1093
868 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
871 1098
872 PUSHMARK (SP); 1099 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1101 PUTBACK;
875 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1104 }
879 1105
880 /* 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
881 * 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.
882 */ 1108 */
883 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 */
884 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 */
885 1111
886 coro_throw = coro->throw; 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 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 */
888 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
889static void 1132static void
890coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
891{ 1134{
892 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
893 { 1136 {
894 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
904 1147
905 /* unwind main stack */ 1148 /* unwind main stack */
906 dounwind (-1); 1149 dounwind (-1);
907 } 1150 }
1151}
908 1152
909 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
912 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1157
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 1158 {
1159 SV *old_current = SvRV (coro_current);
1160 struct coro *current = SvSTATE (old_current);
1161
1162 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1163
1164 save_perl (aTHX_ current);
1165
1166 /* this will cause transfer_check to croak on block*/
1167 SvRV_set (coro_current, (SV *)coro->hv);
1168
1169 load_perl (aTHX_ coro);
1170
1171 coro_unwind_stacks (aTHX);
1172 coro_destruct_stacks (aTHX);
1173
1174 /* restore swapped sv's */
1175 SWAP_SVS (coro);
1176
1177 // now save some sv's to be free'd later
1178 svf [0] = GvSV (PL_defgv);
1179 svf [1] = (SV *)GvAV (PL_defgv);
1180 svf [2] = GvSV (PL_errgv);
1181 svf [3] = (SV *)PL_defoutgv;
1182 svf [4] = PL_rs;
1183 svf [5] = GvSV (irsgv);
1184 svf [6] = (SV *)GvHV (PL_hintgv);
1185 svf [7] = PL_diehook;
1186 svf [8] = PL_warnhook;
1187 assert (9 == sizeof (svf) / sizeof (*svf));
1188
1189 SvRV_set (coro_current, old_current);
1190
1191 load_perl (aTHX_ current);
1192 }
1193
1194 {
1195 unsigned int i;
1196
1197 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1198 SvREFCNT_dec (svf [i]);
1199
919 SvREFCNT_dec (coro->saved_deffh); 1200 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1201 SvREFCNT_dec (coro->rouse_cb);
921 1202 SvREFCNT_dec (coro->invoke_cb);
922 coro_destruct_stacks (aTHX); 1203 SvREFCNT_dec (coro->invoke_av);
1204 }
923} 1205}
924 1206
925INLINE void 1207INLINE void
926free_coro_mortal (pTHX) 1208free_coro_mortal (pTHX)
927{ 1209{
… …
935static int 1217static int
936runops_trace (pTHX) 1218runops_trace (pTHX)
937{ 1219{
938 COP *oldcop = 0; 1220 COP *oldcop = 0;
939 int oldcxix = -2; 1221 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1222
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1223 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1224 {
945 PERL_ASYNC_CHECK (); 1225 PERL_ASYNC_CHECK ();
946 1226
947 if (cctx->flags & CC_TRACE_ALL) 1227 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1228 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1229 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1230 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1231 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1232 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1233 AV *av = newAV (); /* return values */
954 SV **cb; 1234 SV **cb;
… …
991 1271
992 if (PL_curcop != &PL_compiling) 1272 if (PL_curcop != &PL_compiling)
993 { 1273 {
994 SV **cb; 1274 SV **cb;
995 1275
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1276 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1277 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1278 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1279
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1280 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1281 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1282 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1283 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1284 SV *fullname = sv_2mortal (newSV (0));
1006 1285
1007 if (isGV (gv)) 1286 if (isGV (gv))
… …
1012 SAVETMPS; 1291 SAVETMPS;
1013 EXTEND (SP, 3); 1292 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1293 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1294 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1295 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1296 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1297 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1298 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1299 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1300 SPAGAIN;
1022 FREETMPS; 1301 FREETMPS;
… …
1025 } 1304 }
1026 1305
1027 oldcxix = cxstack_ix; 1306 oldcxix = cxstack_ix;
1028 } 1307 }
1029 1308
1030 if (cctx->flags & CC_TRACE_LINE) 1309 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1310 {
1032 dSP; 1311 dSP;
1033 1312
1034 PL_runops = RUNOPS_DEFAULT; 1313 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1314 ENTER;
… …
1054 1333
1055 TAINT_NOT; 1334 TAINT_NOT;
1056 return 0; 1335 return 0;
1057} 1336}
1058 1337
1338static struct CoroSLF cctx_ssl_frame;
1339
1059static void 1340static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1341slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1342{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1343 ta->prev = 0;
1064} 1344}
1065 1345
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1346static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1347slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1348{
1069/* also initialises PL_top_env */ 1349 *frame = cctx_ssl_frame;
1350
1351 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1352}
1353
1354/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1070static void NOINLINE 1355static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1356cctx_prepare (pTHX)
1072{ 1357{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1358 PL_top_env = &PL_start_env;
1077 1359
1078 if (cctx->flags & CC_TRACE) 1360 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
1080 1362
1081 Zero (&myop, 1, UNOP); 1363 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1364 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1365 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1366 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1367
1085 PUSHMARK (SP); 1368 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1369 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1370
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1371 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1372 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1373}
1094 1374
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1375/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1376INLINE void
1097transfer_tail (pTHX) 1377transfer_tail (pTHX)
… …
1116 /* normally we would need to skip the entersub here */ 1396 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1397 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1398 /* PL_nop = PL_nop->op_next */
1119 1399
1120 /* inject a fake subroutine call to cctx_init */ 1400 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1401 cctx_prepare (aTHX);
1122 1402
1123 /* cctx_run is the alternative tail of transfer() */ 1403 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1404 transfer_tail (aTHX);
1125 1405
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1406 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1407 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1408 perl_run (PL_curinterp);
1409 /*
1410 * Unfortunately, there is no way to get at the return values of the
1411 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1412 * runtime errors here, as this is just a random interpreter, not a thread.
1413 */
1129 1414
1130 /* 1415 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1416 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1417 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1418 * reason for perl_run to return. We try to exit by jumping to the
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1419 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * coroutine as Coro has no such concept 1420 * coroutine as Coro has no such concept.
1421 * This actually isn't valid with the pthread backend, but OSes requiring
1422 * that backend are too broken to do it in a standards-compliant way.
1136 */ 1423 */
1137 PL_top_env = main_top_env; 1424 PL_top_env = main_top_env;
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1425 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1426 }
1140} 1427}
… …
1217cctx_destroy (coro_cctx *cctx) 1504cctx_destroy (coro_cctx *cctx)
1218{ 1505{
1219 if (!cctx) 1506 if (!cctx)
1220 return; 1507 return;
1221 1508
1509 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1510
1222 --cctx_count; 1511 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1512 coro_destroy (&cctx->cctx);
1224 1513
1225 /* coro_transfer creates new, empty cctx's */ 1514 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1515 if (cctx->sptr)
… …
1289 /* TODO: throwing up here is considered harmful */ 1578 /* TODO: throwing up here is considered harmful */
1290 1579
1291 if (expect_true (prev != next)) 1580 if (expect_true (prev != next))
1292 { 1581 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1582 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1583 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1584
1296 if (expect_false (next->flags & CF_RUNNING))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED)) 1585 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1586 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1587
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1588#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1589 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1590 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1591#endif
… …
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1597transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1598{
1313 dSTACKLEVEL; 1599 dSTACKLEVEL;
1314 1600
1315 /* sometimes transfer is only called to set idle_sp */ 1601 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1602 if (expect_false (!prev))
1317 { 1603 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1604 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1605 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1606 }
1321 else if (expect_true (prev != next)) 1607 else if (expect_true (prev != next))
1322 { 1608 {
1323 coro_cctx *prev__cctx; 1609 coro_cctx *cctx_prev;
1324 1610
1325 if (expect_false (prev->flags & CF_NEW)) 1611 if (expect_false (prev->flags & CF_NEW))
1326 { 1612 {
1327 /* create a new empty/source context */ 1613 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1614 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1615 prev->flags |= CF_RUNNING;
1331 } 1616 }
1332 1617
1333 prev->flags &= ~CF_RUNNING; 1618 prev->flags &= ~CF_RUNNING;
… …
1339 if (expect_false (next->flags & CF_NEW)) 1624 if (expect_false (next->flags & CF_NEW))
1340 { 1625 {
1341 /* need to start coroutine */ 1626 /* need to start coroutine */
1342 next->flags &= ~CF_NEW; 1627 next->flags &= ~CF_NEW;
1343 /* setup coroutine call */ 1628 /* setup coroutine call */
1344 coro_setup (aTHX_ next); 1629 init_perl (aTHX_ next);
1345 } 1630 }
1346 else 1631 else
1347 load_perl (aTHX_ next); 1632 load_perl (aTHX_ next);
1348 1633
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1634 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1635 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1636 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1637 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1638 && !force_cctx
1356 )) 1639 ))
1357 { 1640 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1641 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1642 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1643
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1644 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1645 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1646 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1647 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1648 next->cctx = cctx_get (aTHX);
1368 1649
1369 cctx_put (prev__cctx); 1650 cctx_put (cctx_current);
1370 } 1651 }
1652 else
1653 prev->cctx = cctx_current;
1371 1654
1372 ++next->usecount; 1655 ++next->usecount;
1373 1656
1374 if (expect_true (!next->cctx)) 1657 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1658 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1659
1377 if (expect_false (prev__cctx != next->cctx)) 1660 next->cctx = 0;
1661
1662 if (expect_false (cctx_prev != cctx_current))
1378 { 1663 {
1379 prev__cctx->top_env = PL_top_env; 1664 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1665 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1666 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1667 }
1383 1668
1384 transfer_tail (aTHX); 1669 transfer_tail (aTHX);
1385 } 1670 }
1386} 1671}
… …
1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1673#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1674#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1390 1675
1391/** high level stuff ********************************************************/ 1676/** high level stuff ********************************************************/
1392 1677
1393static int 1678static void
1394coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1680{
1396 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_DESTROYED)
1397 return 0; 1682 return;
1398 1683
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1401 1685
1402 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_DESTROYED;
1403 1687
1404 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1405 { 1689 {
… …
1408 --coro_nready; 1692 --coro_nready;
1409 } 1693 }
1410 else 1694 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1696
1413 if (coro->mainstack && coro->mainstack != main_mainstack) 1697 if (coro->mainstack
1414 { 1698 && coro->mainstack != main_mainstack
1415 struct coro temp; 1699 && coro->slot
1416 1700 && !PL_dirty)
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro); 1701 destroy_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428
1429 cctx_destroy (coro->cctx);
1430 SvREFCNT_dec (coro->args);
1431 1702
1432 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1435 1706
1436 return 1; 1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1437} 1712}
1438 1713
1439static int 1714static int
1440coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1715coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1441{ 1716{
… …
1494/** Coro ********************************************************************/ 1769/** Coro ********************************************************************/
1495 1770
1496INLINE void 1771INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1772coro_enq (pTHX_ struct coro *coro)
1498{ 1773{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1774 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1775
1502INLINE SV * 1776 SvREFCNT_inc_NN (coro->hv);
1777
1778 coro->next_ready = 0;
1779 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1780 ready [1] = coro;
1781}
1782
1783INLINE struct coro *
1503coro_deq (pTHX) 1784coro_deq (pTHX)
1504{ 1785{
1505 int prio; 1786 int prio;
1506 1787
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1788 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1789 {
1509 return av_shift (coro_ready [prio]); 1790 struct coro **ready = coro_ready [prio];
1791
1792 if (ready [0])
1793 {
1794 struct coro *coro = ready [0];
1795 ready [0] = coro->next_ready;
1796 return coro;
1797 }
1798 }
1510 1799
1511 return 0; 1800 return 0;
1801}
1802
1803static void
1804invoke_sv_ready_hook_helper (void)
1805{
1806 dTHX;
1807 dSP;
1808
1809 ENTER;
1810 SAVETMPS;
1811
1812 PUSHMARK (SP);
1813 PUTBACK;
1814 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1815
1816 FREETMPS;
1817 LEAVE;
1512} 1818}
1513 1819
1514static int 1820static int
1515api_ready (pTHX_ SV *coro_sv) 1821api_ready (pTHX_ SV *coro_sv)
1516{ 1822{
1517 struct coro *coro;
1518 SV *sv_hook;
1519 void (*xs_hook)(void);
1520
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1525 1824
1526 if (coro->flags & CF_READY) 1825 if (coro->flags & CF_READY)
1527 return 0; 1826 return 0;
1528 1827
1529 coro->flags |= CF_READY; 1828 coro->flags |= CF_READY;
1530 1829
1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1533
1534 coro_enq (aTHX_ coro); 1830 coro_enq (aTHX_ coro);
1535 ++coro_nready;
1536 1831
1537 if (sv_hook) 1832 if (!coro_nready++)
1538 { 1833 if (coroapi.readyhook)
1539 dSP; 1834 coroapi.readyhook ();
1540
1541 ENTER;
1542 SAVETMPS;
1543
1544 PUSHMARK (SP);
1545 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD);
1547 SPAGAIN;
1548
1549 FREETMPS;
1550 LEAVE;
1551 }
1552
1553 if (xs_hook)
1554 xs_hook ();
1555 1835
1556 return 1; 1836 return 1;
1557} 1837}
1558 1838
1559static int 1839static int
1560api_is_ready (pTHX_ SV *coro_sv) 1840api_is_ready (pTHX_ SV *coro_sv)
1561{ 1841{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1842 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1843}
1564 1844
1845/* expects to own a reference to next->hv */
1565INLINE void 1846INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1847prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1848{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1849 SV *prev_sv = SvRV (coro_current);
1850
1608 ta->prev = SvSTATE_hv (prev_sv); 1851 ta->prev = SvSTATE_hv (prev_sv);
1852 ta->next = next;
1853
1609 TRANSFER_CHECK (*ta); 1854 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1855
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1856 SvRV_set (coro_current, (SV *)next->hv);
1613 1857
1614 free_coro_mortal (aTHX); 1858 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1859 coro_mortal = prev_sv;
1616} 1860}
1617 1861
1862static void
1863prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1864{
1865 for (;;)
1866 {
1867 struct coro *next = coro_deq (aTHX);
1868
1869 if (expect_true (next))
1870 {
1871 /* cannot transfer to destroyed coros, skip and look for next */
1872 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1873 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1874 else
1875 {
1876 next->flags &= ~CF_READY;
1877 --coro_nready;
1878
1879 prepare_schedule_to (aTHX_ ta, next);
1880 break;
1881 }
1882 }
1883 else
1884 {
1885 /* nothing to schedule: call the idle handler */
1886 if (SvROK (sv_idle)
1887 && SvOBJECT (SvRV (sv_idle)))
1888 {
1889 if (SvRV (sv_idle) == SvRV (coro_current))
1890 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1891
1892 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1893 api_ready (aTHX_ SvRV (sv_idle));
1894 --coro_nready;
1895 }
1896 else
1897 {
1898 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1899 dSP;
1900
1901 ENTER;
1902 SAVETMPS;
1903
1904 PUSHMARK (SP);
1905 PUTBACK;
1906 call_sv (sv_idle, G_VOID | G_DISCARD);
1907
1908 FREETMPS;
1909 LEAVE;
1910 }
1911 }
1912 }
1913}
1914
1618INLINE void 1915INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1916prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1917{
1621 api_ready (aTHX_ coro_current); 1918 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1919 prepare_schedule (aTHX_ ta);
… …
1641{ 1938{
1642 struct coro_transfer_args ta; 1939 struct coro_transfer_args ta;
1643 1940
1644 prepare_schedule (aTHX_ &ta); 1941 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 1942 TRANSFER (ta, 1);
1943}
1944
1945static void
1946api_schedule_to (pTHX_ SV *coro_sv)
1947{
1948 struct coro_transfer_args ta;
1949 struct coro *next = SvSTATE (coro_sv);
1950
1951 SvREFCNT_inc_NN (coro_sv);
1952 prepare_schedule_to (aTHX_ &ta, next);
1646} 1953}
1647 1954
1648static int 1955static int
1649api_cede (pTHX) 1956api_cede (pTHX)
1650{ 1957{
… …
1679static void 1986static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1987api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1988{
1682 struct coro *coro = SvSTATE (coro_sv); 1989 struct coro *coro = SvSTATE (coro_sv);
1683 1990
1991 if (coro->flags & CF_RUNNING)
1992 croak ("cannot enable tracing on a running coroutine, caught");
1993
1684 if (flags & CC_TRACE) 1994 if (flags & CC_TRACE)
1685 { 1995 {
1686 if (!coro->cctx) 1996 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1997 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1998 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1999 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 2000
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2001 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 2002 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2003 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 2004 {
… …
1697 if (coro->flags & CF_RUNNING) 2007 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 2008 PL_runops = RUNOPS_DEFAULT;
1699 else 2009 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 2010 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 2011 }
2012}
2013
2014static void
2015coro_call_on_destroy (pTHX_ struct coro *coro)
2016{
2017 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2018
2019 if (on_destroyp)
2020 {
2021 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2022 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2023 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2024
2025 while (AvFILLp (on_destroy) >= 0)
2026 {
2027 dSP; /* don't disturb outer sp */
2028 SV *cb = av_pop (on_destroy);
2029
2030 PUSHMARK (SP);
2031
2032 if (statusp)
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (status) + 1);
2036
2037 for (i = 0; i <= AvFILLp (status); ++i)
2038 PUSHs (AvARRAY (status)[i]);
2039 }
2040
2041 PUTBACK;
2042 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2043 }
2044 }
2045}
2046
2047static void
2048coro_set_status (HV *coro_hv, SV **arg, int items)
2049{
2050 AV *av = newAV ();
2051
2052 /* items are actually not so common, so optimise for this case */
2053 if (items)
2054 {
2055 int i;
2056
2057 av_extend (av, items - 1);
2058
2059 for (i = 0; i < items; ++i)
2060 av_push (av, SvREFCNT_inc_NN (arg [i]));
2061 }
2062
2063 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2064}
2065
2066static void
2067slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2068{
2069 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2070 api_ready (aTHX_ sv_manager);
2071
2072 frame->prepare = prepare_schedule;
2073 frame->check = slf_check_repeat;
2074
2075 /* as a minor optimisation, we could unwind all stacks here */
2076 /* but that puts extra pressure on pp_slf, and is not worth much */
2077 /*coro_unwind_stacks (aTHX);*/
2078}
2079
2080static void
2081slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 HV *coro_hv = (HV *)SvRV (coro_current);
2084
2085 coro_set_status (coro_hv, arg, items);
2086 slf_init_terminate_cancel_common (frame, coro_hv);
2087}
2088
2089static void
2090slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 HV *coro_hv;
2093 struct coro *coro;
2094
2095 if (items <= 0)
2096 croak ("Coro::cancel called without coro object,");
2097
2098 coro = SvSTATE (arg [0]);
2099 coro_hv = coro->hv;
2100
2101 coro_set_status (coro_hv, arg + 1, items - 1);
2102
2103 if (expect_false (coro->flags & CF_NOCANCEL))
2104 {
2105 /* coro currently busy cancelling something, so just notify it */
2106 coro->slf_frame.data = (void *)coro;
2107
2108 frame->prepare = prepare_nop;
2109 frame->check = slf_check_nop;
2110 }
2111 else if (coro_hv == (HV *)SvRV (coro_current))
2112 {
2113 /* cancelling the current coro is allowed, and equals terminate */
2114 slf_init_terminate_cancel_common (frame, coro_hv);
2115 }
2116 else
2117 {
2118 struct coro *self = SvSTATE_current;
2119
2120 /* otherwise we cancel directly, purely for speed reasons
2121 * unfortunately, this requires some magic trickery, as
2122 * somebody else could cancel us, so we have to fight the cancellation.
2123 * this is ugly, and hopefully fully worth the extra speed.
2124 * besides, I can't get the slow-but-safe version working...
2125 */
2126 slf_frame.data = 0;
2127 self->flags |= CF_NOCANCEL;
2128
2129 coro_state_destroy (aTHX_ coro);
2130 coro_call_on_destroy (aTHX_ coro);
2131
2132 self->flags &= ~CF_NOCANCEL;
2133
2134 if (slf_frame.data)
2135 {
2136 /* while we were busy we have been cancelled, so terminate */
2137 slf_init_terminate_cancel_common (frame, self->hv);
2138 }
2139 else
2140 {
2141 frame->prepare = prepare_nop;
2142 frame->check = slf_check_nop;
2143 }
2144 }
2145}
2146
2147static int
2148slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2149{
2150 frame->prepare = 0;
2151 coro_unwind_stacks ();
2152
2153 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2154
2155 return 1;
2156}
2157
2158static int
2159safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2160{
2161 if (coro->cctx)
2162 croak ("coro inside C callback, unable to cancel at this time, caught");
2163
2164 if (coro->flags & CF_NEW)
2165 {
2166 coro_set_status (coro->hv, arg, items);
2167 coro_state_destroy (aTHX_ coro);
2168 coro_call_on_destroy (aTHX_ coro);
2169 }
2170 else
2171 {
2172 if (!coro->slf_frame.prepare)
2173 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2174
2175 slf_destroy (coro);
2176
2177 coro_set_status (coro->hv, arg, items);
2178 coro->slf_frame.prepare = prepare_nop;
2179 coro->slf_frame.check = slf_check_safe_cancel;
2180
2181 api_ready (aTHX_ coro->hv);
2182 }
2183
2184 return 1;
2185}
2186
2187/*****************************************************************************/
2188/* async pool handler */
2189
2190static int
2191slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2192{
2193 HV *hv = (HV *)SvRV (coro_current);
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->invoke_cb)
2197 return 1; /* loop till we have invoke */
2198 else
2199 {
2200 hv_store (hv, "desc", sizeof ("desc") - 1,
2201 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2202
2203 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2204
2205 {
2206 dSP;
2207 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2208 PUTBACK;
2209 }
2210
2211 SvREFCNT_dec (GvAV (PL_defgv));
2212 GvAV (PL_defgv) = coro->invoke_av;
2213 coro->invoke_av = 0;
2214
2215 return 0;
2216 }
2217}
2218
2219static void
2220slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *hv = (HV *)SvRV (coro_current);
2223 struct coro *coro = SvSTATE_hv ((SV *)hv);
2224
2225 if (expect_true (coro->saved_deffh))
2226 {
2227 /* subsequent iteration */
2228 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2229 coro->saved_deffh = 0;
2230
2231 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2232 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2233 {
2234 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2235 return;
2236 }
2237 else
2238 {
2239 av_clear (GvAV (PL_defgv));
2240 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2241
2242 coro->prio = 0;
2243
2244 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2245 api_trace (aTHX_ coro_current, 0);
2246
2247 frame->prepare = prepare_schedule;
2248 av_push (av_async_pool, SvREFCNT_inc (hv));
2249 }
2250 }
2251 else
2252 {
2253 /* first iteration, simply fall through */
2254 frame->prepare = prepare_nop;
2255 }
2256
2257 frame->check = slf_check_pool_handler;
2258 frame->data = (void *)coro;
2259}
2260
2261/*****************************************************************************/
2262/* rouse callback */
2263
2264#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2265
2266static void
2267coro_rouse_callback (pTHX_ CV *cv)
2268{
2269 dXSARGS;
2270 SV *data = (SV *)S_GENSUB_ARG;
2271
2272 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2273 {
2274 /* first call, set args */
2275 SV *coro = SvRV (data);
2276 AV *av = newAV ();
2277
2278 SvRV_set (data, (SV *)av);
2279
2280 /* better take a full copy of the arguments */
2281 while (items--)
2282 av_store (av, items, newSVsv (ST (items)));
2283
2284 api_ready (aTHX_ coro);
2285 SvREFCNT_dec (coro);
2286 }
2287
2288 XSRETURN_EMPTY;
2289}
2290
2291static int
2292slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2293{
2294 SV *data = (SV *)frame->data;
2295
2296 if (CORO_THROW)
2297 return 0;
2298
2299 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2300 return 1;
2301
2302 /* now push all results on the stack */
2303 {
2304 dSP;
2305 AV *av = (AV *)SvRV (data);
2306 int i;
2307
2308 EXTEND (SP, AvFILLp (av) + 1);
2309 for (i = 0; i <= AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2311
2312 /* we have stolen the elements, so set length to zero and free */
2313 AvFILLp (av) = -1;
2314 av_undef (av);
2315
2316 PUTBACK;
2317 }
2318
2319 return 0;
2320}
2321
2322static void
2323slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 SV *cb;
2326
2327 if (items)
2328 cb = arg [0];
2329 else
2330 {
2331 struct coro *coro = SvSTATE_current;
2332
2333 if (!coro->rouse_cb)
2334 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2335
2336 cb = sv_2mortal (coro->rouse_cb);
2337 coro->rouse_cb = 0;
2338 }
2339
2340 if (!SvROK (cb)
2341 || SvTYPE (SvRV (cb)) != SVt_PVCV
2342 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2343 croak ("Coro::rouse_wait called with illegal callback argument,");
2344
2345 {
2346 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2347 SV *data = (SV *)S_GENSUB_ARG;
2348
2349 frame->data = (void *)data;
2350 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2351 frame->check = slf_check_rouse_wait;
2352 }
2353}
2354
2355static SV *
2356coro_new_rouse_cb (pTHX)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = SvSTATE_hv (hv);
2360 SV *data = newRV_inc ((SV *)hv);
2361 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2362
2363 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2364 SvREFCNT_dec (data); /* magicext increases the refcount */
2365
2366 SvREFCNT_dec (coro->rouse_cb);
2367 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2368
2369 return cb;
2370}
2371
2372/*****************************************************************************/
2373/* schedule-like-function opcode (SLF) */
2374
2375static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2376static const CV *slf_cv;
2377static SV **slf_argv;
2378static int slf_argc, slf_arga; /* count, allocated */
2379static I32 slf_ax; /* top of stack, for restore */
2380
2381/* this restores the stack in the case we patched the entersub, to */
2382/* recreate the stack frame as perl will on following calls */
2383/* since entersub cleared the stack */
2384static OP *
2385pp_restore (pTHX)
2386{
2387 int i;
2388 SV **SP = PL_stack_base + slf_ax;
2389
2390 PUSHMARK (SP);
2391
2392 EXTEND (SP, slf_argc + 1);
2393
2394 for (i = 0; i < slf_argc; ++i)
2395 PUSHs (sv_2mortal (slf_argv [i]));
2396
2397 PUSHs ((SV *)CvGV (slf_cv));
2398
2399 RETURNOP (slf_restore.op_first);
2400}
2401
2402static void
2403slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2404{
2405 SV **arg = (SV **)slf_frame.data;
2406
2407 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2408}
2409
2410static void
2411slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2412{
2413 if (items != 2)
2414 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2415
2416 frame->prepare = slf_prepare_transfer;
2417 frame->check = slf_check_nop;
2418 frame->data = (void *)arg; /* let's hope it will stay valid */
2419}
2420
2421static void
2422slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2423{
2424 frame->prepare = prepare_schedule;
2425 frame->check = slf_check_nop;
2426}
2427
2428static void
2429slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2430{
2431 struct coro *next = (struct coro *)slf_frame.data;
2432
2433 SvREFCNT_inc_NN (next->hv);
2434 prepare_schedule_to (aTHX_ ta, next);
2435}
2436
2437static void
2438slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2439{
2440 if (!items)
2441 croak ("Coro::schedule_to expects a coroutine argument, caught");
2442
2443 frame->data = (void *)SvSTATE (arg [0]);
2444 frame->prepare = slf_prepare_schedule_to;
2445 frame->check = slf_check_nop;
2446}
2447
2448static void
2449slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 api_ready (aTHX_ SvRV (coro_current));
2452
2453 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2454}
2455
2456static void
2457slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2458{
2459 frame->prepare = prepare_cede;
2460 frame->check = slf_check_nop;
2461}
2462
2463static void
2464slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2465{
2466 frame->prepare = prepare_cede_notself;
2467 frame->check = slf_check_nop;
2468}
2469
2470/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2471static void
2472slf_destroy (pTHX_ struct coro *coro)
2473{
2474 /* this callback is reserved for slf functions needing to do cleanup */
2475 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2476 coro->slf_frame.destroy (aTHX_ coro);
2477
2478 /*
2479 * The on_destroy above most likely is from an SLF call.
2480 * Since by definition the SLF call will not finish when we destroy
2481 * the coro, we will have to force-finish it here, otherwise
2482 * cleanup functions cannot call SLF functions.
2483 */
2484 coro->slf_frame.prepare = 0;
2485}
2486
2487/*
2488 * these not obviously related functions are all rolled into one
2489 * function to increase chances that they all will call transfer with the same
2490 * stack offset
2491 * SLF stands for "schedule-like-function".
2492 */
2493static OP *
2494pp_slf (pTHX)
2495{
2496 I32 checkmark; /* mark SP to see how many elements check has pushed */
2497
2498 /* set up the slf frame, unless it has already been set-up */
2499 /* the latter happens when a new coro has been started */
2500 /* or when a new cctx was attached to an existing coroutine */
2501 if (expect_true (!slf_frame.prepare))
2502 {
2503 /* first iteration */
2504 dSP;
2505 SV **arg = PL_stack_base + TOPMARK + 1;
2506 int items = SP - arg; /* args without function object */
2507 SV *gv = *sp;
2508
2509 /* do a quick consistency check on the "function" object, and if it isn't */
2510 /* for us, divert to the real entersub */
2511 if (SvTYPE (gv) != SVt_PVGV
2512 || !GvCV (gv)
2513 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2514 return PL_ppaddr[OP_ENTERSUB](aTHX);
2515
2516 if (!(PL_op->op_flags & OPf_STACKED))
2517 {
2518 /* ampersand-form of call, use @_ instead of stack */
2519 AV *av = GvAV (PL_defgv);
2520 arg = AvARRAY (av);
2521 items = AvFILLp (av) + 1;
2522 }
2523
2524 /* now call the init function, which needs to set up slf_frame */
2525 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2526 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2527
2528 /* pop args */
2529 SP = PL_stack_base + POPMARK;
2530
2531 PUTBACK;
2532 }
2533
2534 /* now that we have a slf_frame, interpret it! */
2535 /* we use a callback system not to make the code needlessly */
2536 /* complicated, but so we can run multiple perl coros from one cctx */
2537
2538 do
2539 {
2540 struct coro_transfer_args ta;
2541
2542 slf_frame.prepare (aTHX_ &ta);
2543 TRANSFER (ta, 0);
2544
2545 checkmark = PL_stack_sp - PL_stack_base;
2546 }
2547 while (slf_frame.check (aTHX_ &slf_frame));
2548
2549 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2550
2551 /* exception handling */
2552 if (expect_false (CORO_THROW))
2553 {
2554 SV *exception = sv_2mortal (CORO_THROW);
2555
2556 CORO_THROW = 0;
2557 sv_setsv (ERRSV, exception);
2558 croak (0);
2559 }
2560
2561 /* return value handling - mostly like entersub */
2562 /* make sure we put something on the stack in scalar context */
2563 if (GIMME_V == G_SCALAR)
2564 {
2565 dSP;
2566 SV **bot = PL_stack_base + checkmark;
2567
2568 if (sp == bot) /* too few, push undef */
2569 bot [1] = &PL_sv_undef;
2570 else if (sp != bot + 1) /* too many, take last one */
2571 bot [1] = *sp;
2572
2573 SP = bot + 1;
2574
2575 PUTBACK;
2576 }
2577
2578 return NORMAL;
2579}
2580
2581static void
2582api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2583{
2584 int i;
2585 SV **arg = PL_stack_base + ax;
2586 int items = PL_stack_sp - arg + 1;
2587
2588 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2589
2590 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2591 && PL_op->op_ppaddr != pp_slf)
2592 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2593
2594 CvFLAGS (cv) |= CVf_SLF;
2595 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2596 slf_cv = cv;
2597
2598 /* we patch the op, and then re-run the whole call */
2599 /* we have to put the same argument on the stack for this to work */
2600 /* and this will be done by pp_restore */
2601 slf_restore.op_next = (OP *)&slf_restore;
2602 slf_restore.op_type = OP_CUSTOM;
2603 slf_restore.op_ppaddr = pp_restore;
2604 slf_restore.op_first = PL_op;
2605
2606 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2607
2608 if (PL_op->op_flags & OPf_STACKED)
2609 {
2610 if (items > slf_arga)
2611 {
2612 slf_arga = items;
2613 Safefree (slf_argv);
2614 New (0, slf_argv, slf_arga, SV *);
2615 }
2616
2617 slf_argc = items;
2618
2619 for (i = 0; i < items; ++i)
2620 slf_argv [i] = SvREFCNT_inc (arg [i]);
2621 }
2622 else
2623 slf_argc = 0;
2624
2625 PL_op->op_ppaddr = pp_slf;
2626 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2627
2628 PL_op = (OP *)&slf_restore;
2629}
2630
2631/*****************************************************************************/
2632/* dynamic wind */
2633
2634static void
2635on_enterleave_call (pTHX_ SV *cb)
2636{
2637 dSP;
2638
2639 PUSHSTACK;
2640
2641 PUSHMARK (SP);
2642 PUTBACK;
2643 call_sv (cb, G_VOID | G_DISCARD);
2644 SPAGAIN;
2645
2646 POPSTACK;
2647}
2648
2649static SV *
2650coro_avp_pop_and_free (pTHX_ AV **avp)
2651{
2652 AV *av = *avp;
2653 SV *res = av_pop (av);
2654
2655 if (AvFILLp (av) < 0)
2656 {
2657 *avp = 0;
2658 SvREFCNT_dec (av);
2659 }
2660
2661 return res;
2662}
2663
2664static void
2665coro_pop_on_enter (pTHX_ void *coro)
2666{
2667 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2668 SvREFCNT_dec (cb);
2669}
2670
2671static void
2672coro_pop_on_leave (pTHX_ void *coro)
2673{
2674 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2675 on_enterleave_call (aTHX_ sv_2mortal (cb));
1702} 2676}
1703 2677
1704/*****************************************************************************/ 2678/*****************************************************************************/
1705/* PerlIO::cede */ 2679/* PerlIO::cede */
1706 2680
… …
1775 PerlIOBuf_get_cnt, 2749 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2750 PerlIOBuf_set_ptrcnt,
1777}; 2751};
1778 2752
1779/*****************************************************************************/ 2753/*****************************************************************************/
2754/* Coro::Semaphore & Coro::Signal */
1780 2755
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2756static SV *
1791pp_restore (pTHX) 2757coro_waitarray_new (pTHX_ int count)
1792{ 2758{
1793 int i; 2759 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2760 AV *av = newAV ();
2761 SV **ary;
1795 2762
1796 PUSHMARK (SP); 2763 /* unfortunately, building manually saves memory */
2764 Newx (ary, 2, SV *);
2765 AvALLOC (av) = ary;
2766#if PERL_VERSION_ATLEAST (5,10,0)
2767 AvARRAY (av) = ary;
2768#else
2769 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2770 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2771 SvPVX ((SV *)av) = (char *)ary;
2772#endif
2773 AvMAX (av) = 1;
2774 AvFILLp (av) = 0;
2775 ary [0] = newSViv (count);
1797 2776
1798 EXTEND (SP, slf_argc + 1); 2777 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2778}
1807 2779
1808static void 2780/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 2781
2007static void 2782static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2783coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 2784{
2010 SV *count_sv = AvARRAY (av)[0]; 2785 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 2797 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 2798 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 2799 cb = av_shift (av);
2025 2800
2026 if (SvOBJECT (cb)) 2801 if (SvOBJECT (cb))
2802 {
2027 api_ready (aTHX_ cb); 2803 api_ready (aTHX_ cb);
2028 else 2804 --count;
2029 croak ("callbacks not yet supported"); 2805 }
2806 else if (SvTYPE (cb) == SVt_PVCV)
2807 {
2808 dSP;
2809 PUSHMARK (SP);
2810 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2811 PUTBACK;
2812 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2813 }
2030 2814
2031 SvREFCNT_dec (cb); 2815 SvREFCNT_dec (cb);
2032
2033 --count;
2034 } 2816 }
2035} 2817}
2036 2818
2037static void 2819static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2820coro_semaphore_destroy (pTHX_ struct coro *coro)
2039{ 2821{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2822 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2823 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042} 2824}
2043 2825
2044static int 2826static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2827slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 2828{
2047 AV *av = (AV *)frame->data; 2829 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 2830 SV *count_sv = AvARRAY (av)[0];
2049 2831
2832 /* if we are about to throw, don't actually acquire the lock, just throw */
2833 if (CORO_THROW)
2834 return 0;
2050 if (SvIVX (count_sv) > 0) 2835 else if (SvIVX (count_sv) > 0)
2051 { 2836 {
2052 SvSTATE_current->on_destroy = 0; 2837 frame->destroy = 0;
2838
2839 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2840 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2841 else
2842 coro_semaphore_adjust (aTHX_ av, 0);
2843
2054 return 0; 2844 return 0;
2055 } 2845 }
2056 else 2846 else
2057 { 2847 {
2058 int i; 2848 int i;
… …
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2857 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1; 2858 return 1;
2069 } 2859 }
2070} 2860}
2071 2861
2072static void 2862static int
2863slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2864{
2865 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2866}
2867
2868static int
2869slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2870{
2871 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2872}
2873
2874static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2875slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{ 2876{
2075 AV *av = (AV *)SvRV (arg [0]); 2877 AV *av = (AV *)SvRV (arg [0]);
2076 2878
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 2879 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 2880 {
2079 frame->data = (void *)av; 2881 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 2882 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 2883 }
2083 else 2884 else
2084 { 2885 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2886 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 2887
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2888 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 2889 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 2890 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2891 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2892 frame->destroy = coro_semaphore_destroy;
2094 } 2893 }
2894}
2095 2895
2896static void
2897slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2898{
2899 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2096 frame->check = slf_check_semaphore_down; 2900 frame->check = slf_check_semaphore_down;
2901}
2097 2902
2903static void
2904slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2905{
2906 if (items >= 2)
2907 {
2908 /* callback form */
2909 AV *av = (AV *)SvRV (arg [0]);
2910 SV *cb_cv = s_get_cv_croak (arg [1]);
2911
2912 av_push (av, SvREFCNT_inc_NN (cb_cv));
2913
2914 if (SvIVX (AvARRAY (av)[0]) > 0)
2915 coro_semaphore_adjust (aTHX_ av, 0);
2916
2917 frame->prepare = prepare_nop;
2918 frame->check = slf_check_nop;
2919 }
2920 else
2921 {
2922 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2923 frame->check = slf_check_semaphore_wait;
2924 }
2925}
2926
2927/* signal */
2928
2929static void
2930coro_signal_wake (pTHX_ AV *av, int count)
2931{
2932 SvIVX (AvARRAY (av)[0]) = 0;
2933
2934 /* now signal count waiters */
2935 while (count > 0 && AvFILLp (av) > 0)
2936 {
2937 SV *cb;
2938
2939 /* swap first two elements so we can shift a waiter */
2940 cb = AvARRAY (av)[0];
2941 AvARRAY (av)[0] = AvARRAY (av)[1];
2942 AvARRAY (av)[1] = cb;
2943
2944 cb = av_shift (av);
2945
2946 if (SvTYPE (cb) == SVt_PVCV)
2947 {
2948 dSP;
2949 PUSHMARK (SP);
2950 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2951 PUTBACK;
2952 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2953 }
2954 else
2955 {
2956 api_ready (aTHX_ cb);
2957 sv_setiv (cb, 0); /* signal waiter */
2958 }
2959
2960 SvREFCNT_dec (cb);
2961
2962 --count;
2963 }
2964}
2965
2966static int
2967slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2968{
2969 /* if we are about to throw, also stop waiting */
2970 return SvROK ((SV *)frame->data) && !CORO_THROW;
2971}
2972
2973static void
2974slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2975{
2976 AV *av = (AV *)SvRV (arg [0]);
2977
2978 if (items >= 2)
2979 {
2980 SV *cb_cv = s_get_cv_croak (arg [1]);
2981 av_push (av, SvREFCNT_inc_NN (cb_cv));
2982
2983 if (SvIVX (AvARRAY (av)[0]))
2984 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2985
2986 frame->prepare = prepare_nop;
2987 frame->check = slf_check_nop;
2988 }
2989 else if (SvIVX (AvARRAY (av)[0]))
2990 {
2991 SvIVX (AvARRAY (av)[0]) = 0;
2992 frame->prepare = prepare_nop;
2993 frame->check = slf_check_nop;
2994 }
2995 else
2996 {
2997 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2998
2999 av_push (av, waiter);
3000
3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3002 frame->prepare = prepare_schedule;
3003 frame->check = slf_check_signal_wait;
3004 }
2098} 3005}
2099 3006
2100/*****************************************************************************/ 3007/*****************************************************************************/
3008/* Coro::AIO */
2101 3009
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3010#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 3011
2104/* create a closure from XS, returns a code reference */ 3012/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 3013struct io_state
2106/* the callback must use dXSARGS/XSRETURN */ 3014{
3015 int errorno;
3016 I32 laststype; /* U16 in 5.10.0 */
3017 int laststatval;
3018 Stat_t statcache;
3019};
3020
3021static void
3022coro_aio_callback (pTHX_ CV *cv)
3023{
3024 dXSARGS;
3025 AV *state = (AV *)S_GENSUB_ARG;
3026 SV *coro = av_pop (state);
3027 SV *data_sv = newSV (sizeof (struct io_state));
3028
3029 av_extend (state, items - 1);
3030
3031 sv_upgrade (data_sv, SVt_PV);
3032 SvCUR_set (data_sv, sizeof (struct io_state));
3033 SvPOK_only (data_sv);
3034
3035 {
3036 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3037
3038 data->errorno = errno;
3039 data->laststype = PL_laststype;
3040 data->laststatval = PL_laststatval;
3041 data->statcache = PL_statcache;
3042 }
3043
3044 /* now build the result vector out of all the parameters and the data_sv */
3045 {
3046 int i;
3047
3048 for (i = 0; i < items; ++i)
3049 av_push (state, SvREFCNT_inc_NN (ST (i)));
3050 }
3051
3052 av_push (state, data_sv);
3053
3054 api_ready (aTHX_ coro);
3055 SvREFCNT_dec (coro);
3056 SvREFCNT_dec ((AV *)state);
3057}
3058
3059static int
3060slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3061{
3062 AV *state = (AV *)frame->data;
3063
3064 /* if we are about to throw, return early */
3065 /* this does not cancel the aio request, but at least */
3066 /* it quickly returns */
3067 if (CORO_THROW)
3068 return 0;
3069
3070 /* one element that is an RV? repeat! */
3071 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3072 return 1;
3073
3074 /* restore status */
3075 {
3076 SV *data_sv = av_pop (state);
3077 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3078
3079 errno = data->errorno;
3080 PL_laststype = data->laststype;
3081 PL_laststatval = data->laststatval;
3082 PL_statcache = data->statcache;
3083
3084 SvREFCNT_dec (data_sv);
3085 }
3086
3087 /* push result values */
3088 {
3089 dSP;
3090 int i;
3091
3092 EXTEND (SP, AvFILLp (state) + 1);
3093 for (i = 0; i <= AvFILLp (state); ++i)
3094 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3095
3096 PUTBACK;
3097 }
3098
3099 return 0;
3100}
3101
3102static void
3103slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3104{
3105 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3106 SV *coro_hv = SvRV (coro_current);
3107 struct coro *coro = SvSTATE_hv (coro_hv);
3108
3109 /* put our coroutine id on the state arg */
3110 av_push (state, SvREFCNT_inc_NN (coro_hv));
3111
3112 /* first see whether we have a non-zero priority and set it as AIO prio */
3113 if (coro->prio)
3114 {
3115 dSP;
3116
3117 static SV *prio_cv;
3118 static SV *prio_sv;
3119
3120 if (expect_false (!prio_cv))
3121 {
3122 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3123 prio_sv = newSViv (0);
3124 }
3125
3126 PUSHMARK (SP);
3127 sv_setiv (prio_sv, coro->prio);
3128 XPUSHs (prio_sv);
3129
3130 PUTBACK;
3131 call_sv (prio_cv, G_VOID | G_DISCARD);
3132 }
3133
3134 /* now call the original request */
3135 {
3136 dSP;
3137 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3138 int i;
3139
3140 PUSHMARK (SP);
3141
3142 /* first push all args to the stack */
3143 EXTEND (SP, items + 1);
3144
3145 for (i = 0; i < items; ++i)
3146 PUSHs (arg [i]);
3147
3148 /* now push the callback closure */
3149 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3150
3151 /* now call the AIO function - we assume our request is uncancelable */
3152 PUTBACK;
3153 call_sv ((SV *)req, G_VOID | G_DISCARD);
3154 }
3155
3156 /* now that the request is going, we loop till we have a result */
3157 frame->data = (void *)state;
3158 frame->prepare = prepare_schedule;
3159 frame->check = slf_check_aio_req;
3160}
3161
3162static void
3163coro_aio_req_xs (pTHX_ CV *cv)
3164{
3165 dXSARGS;
3166
3167 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3168
3169 XSRETURN_EMPTY;
3170}
3171
3172/*****************************************************************************/
3173
3174#if CORO_CLONE
3175# include "clone.c"
3176#endif
3177
3178/*****************************************************************************/
3179
2107static SV * 3180static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3181coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2109{ 3182{
2110 CV *cv = (CV *)NEWSV (0, 0); 3183 SV *coro_sv;
3184 struct coro *coro;
3185 MAGIC *mg;
3186 HV *hv;
3187 SV *cb;
3188 int i;
2111 3189
2112 sv_upgrade ((SV *)cv, SVt_PVCV); 3190 if (argc > 0)
3191 {
3192 cb = s_get_cv_croak (argv [0]);
2113 3193
2114 CvANON_on (cv); 3194 if (!is_coro)
2115 CvISXSUB_on (cv); 3195 {
2116 CvXSUB (cv) = xsub; 3196 if (CvISXSUB (cb))
2117 GENSUB_ARG = arg; 3197 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2118 3198
2119 return newRV_noinc ((SV *)cv); 3199 if (!CvROOT (cb))
2120} 3200 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3201 }
3202 }
2121 3203
2122/*****************************************************************************/ 3204 Newz (0, coro, 1, struct coro);
3205 coro->args = newAV ();
3206 coro->flags = CF_NEW;
3207
3208 if (coro_first) coro_first->prev = coro;
3209 coro->next = coro_first;
3210 coro_first = coro;
3211
3212 coro->hv = hv = newHV ();
3213 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3214 mg->mg_flags |= MGf_DUP;
3215 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3216
3217 if (argc > 0)
3218 {
3219 av_extend (coro->args, argc + is_coro - 1);
3220
3221 if (is_coro)
3222 {
3223 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3224 cb = (SV *)cv_coro_run;
3225 }
3226
3227 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3228
3229 for (i = 1; i < argc; i++)
3230 av_push (coro->args, newSVsv (argv [i]));
3231 }
3232
3233 return coro_sv;
3234}
2123 3235
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3236MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 3237
2126PROTOTYPES: DISABLE 3238PROTOTYPES: DISABLE
2127 3239
… …
2132 coro_thx = PERL_GET_CONTEXT; 3244 coro_thx = PERL_GET_CONTEXT;
2133# endif 3245# endif
2134#endif 3246#endif
2135 BOOT_PAGESIZE; 3247 BOOT_PAGESIZE;
2136 3248
3249 cctx_current = cctx_new_empty ();
3250
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3251 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3252 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 3253
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3254 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3255 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2160 3274
2161 { 3275 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3276 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 3277
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3278 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 3279 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 3280
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3281 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 3282 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 3283 }
2172 3284
2173 coroapi.ver = CORO_API_VERSION; 3285 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 3286 coroapi.rev = CORO_API_REVISION;
2175 3287
… …
2180 coroapi.prepare_nop = prepare_nop; 3292 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule; 3293 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede; 3294 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself; 3295 coroapi.prepare_cede_notself = prepare_cede_notself;
2184 3296
2185 { 3297 time_init (aTHX);
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187 3298
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
2193
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3299 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2195} 3300}
2196 3301
2197SV * 3302SV *
2198new (char *klass, ...) 3303new (SV *klass, ...)
3304 ALIAS:
3305 Coro::new = 1
2199 CODE: 3306 CODE:
2200{ 3307 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2201 struct coro *coro; 3308 OUTPUT:
2202 MAGIC *mg;
2203 HV *hv;
2204 int i;
2205
2206 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV ();
2208 coro->flags = CF_NEW;
2209
2210 if (coro_first) coro_first->prev = coro;
2211 coro->next = coro_first;
2212 coro_first = coro;
2213
2214 coro->hv = hv = newHV ();
2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218
2219 av_extend (coro->args, items - 1);
2220 for (i = 1; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i)));
2222}
2223 OUTPUT:
2224 RETVAL 3309 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 3310
2231void 3311void
2232transfer (...) 3312transfer (...)
2233 PROTOTYPE: $$ 3313 PROTOTYPE: $$
2234 CODE: 3314 CODE:
2235 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3315 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2236 3316
2237bool
2238_destroy (SV *coro_sv)
2239 CODE:
2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2241 OUTPUT:
2242 RETVAL
2243
2244void 3317void
2245_exit (int code) 3318_exit (int code)
2246 PROTOTYPE: $ 3319 PROTOTYPE: $
2247 CODE: 3320 CODE:
2248 _exit (code); 3321 _exit (code);
3322
3323SV *
3324clone (Coro::State coro)
3325 CODE:
3326{
3327#if CORO_CLONE
3328 struct coro *ncoro = coro_clone (aTHX_ coro);
3329 MAGIC *mg;
3330 /* TODO: too much duplication */
3331 ncoro->hv = newHV ();
3332 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3333 mg->mg_flags |= MGf_DUP;
3334 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3335#else
3336 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3337#endif
3338}
3339 OUTPUT:
3340 RETVAL
2249 3341
2250int 3342int
2251cctx_stacksize (int new_stacksize = 0) 3343cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 3344 PROTOTYPE: ;$
2253 CODE: 3345 CODE:
… …
2303 eval = 1 3395 eval = 1
2304 CODE: 3396 CODE:
2305{ 3397{
2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3398 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2307 { 3399 {
2308 struct coro temp; 3400 struct coro *current = SvSTATE_current;
3401 struct CoroSLF slf_save;
2309 3402
2310 if (!(coro->flags & CF_RUNNING)) 3403 if (current != coro)
2311 { 3404 {
2312 PUTBACK; 3405 PUTBACK;
2313 save_perl (aTHX_ &temp); 3406 save_perl (aTHX_ current);
2314 load_perl (aTHX_ coro); 3407 load_perl (aTHX_ coro);
3408 /* the coro is most likely in an active SLF call.
3409 * while not strictly required (the code we execute is
3410 * not allowed to call any SLF functions), it's cleaner
3411 * to reinitialise the slf_frame and restore it later.
3412 * This might one day allow us to actually do SLF calls
3413 * from code executed here.
3414 */
3415 slf_save = slf_frame;
3416 slf_frame.prepare = 0;
3417 SPAGAIN;
2315 } 3418 }
2316 3419
2317 {
2318 dSP;
2319 ENTER;
2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK; 3420 PUSHSTACK;
3421
2323 PUSHMARK (SP); 3422 PUSHMARK (SP);
3423 PUTBACK;
2324 3424
2325 if (ix) 3425 if (ix)
2326 eval_sv (coderef, 0); 3426 eval_sv (coderef, 0);
2327 else 3427 else
2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3428 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329 3429
2330 POPSTACK; 3430 POPSTACK;
2331 SPAGAIN; 3431 SPAGAIN;
2332 FREETMPS;
2333 LEAVE;
2334 PUTBACK;
2335 }
2336 3432
2337 if (!(coro->flags & CF_RUNNING)) 3433 if (current != coro)
2338 { 3434 {
3435 PUTBACK;
3436 slf_frame = slf_save;
2339 save_perl (aTHX_ coro); 3437 save_perl (aTHX_ coro);
2340 load_perl (aTHX_ &temp); 3438 load_perl (aTHX_ current);
2341 SPAGAIN; 3439 SPAGAIN;
2342 } 3440 }
2343 } 3441 }
2344} 3442}
2345 3443
… …
2349 ALIAS: 3447 ALIAS:
2350 is_ready = CF_READY 3448 is_ready = CF_READY
2351 is_running = CF_RUNNING 3449 is_running = CF_RUNNING
2352 is_new = CF_NEW 3450 is_new = CF_NEW
2353 is_destroyed = CF_DESTROYED 3451 is_destroyed = CF_DESTROYED
3452 is_suspended = CF_SUSPENDED
2354 CODE: 3453 CODE:
2355 RETVAL = boolSV (coro->flags & ix); 3454 RETVAL = boolSV (coro->flags & ix);
2356 OUTPUT: 3455 OUTPUT:
2357 RETVAL 3456 RETVAL
2358 3457
2359void 3458void
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3459throw (Coro::State self, SV *exception = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3460 PROTOTYPE: $;$
2362 CODE: 3461 CODE:
2363{ 3462{
2364 struct coro *current = SvSTATE_current; 3463 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3464 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2366 SvREFCNT_dec (*throwp); 3465 SvREFCNT_dec (*exceptionp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3466 SvGETMAGIC (exception);
3467 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2368} 3468}
2369 3469
2370void 3470void
2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3471api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$ 3472 PROTOTYPE: $;$
… …
2374 3474
2375SV * 3475SV *
2376has_cctx (Coro::State coro) 3476has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3477 PROTOTYPE: $
2378 CODE: 3478 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3479 /* maybe manage the running flag differently */
3480 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3481 OUTPUT:
2381 RETVAL 3482 RETVAL
2382 3483
2383int 3484int
2384is_traced (Coro::State coro) 3485is_traced (Coro::State coro)
… …
2404 3505
2405void 3506void
2406force_cctx () 3507force_cctx ()
2407 PROTOTYPE: 3508 PROTOTYPE:
2408 CODE: 3509 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3510 cctx_current->idle_sp = 0;
2410 3511
2411void 3512void
2412swap_defsv (Coro::State self) 3513swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3514 PROTOTYPE: $
2414 ALIAS: 3515 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3523 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3524
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3525 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3526 }
2426 3527
3528void
3529cancel (Coro::State self)
3530 CODE:
3531 coro_state_destroy (aTHX_ self);
3532
3533SV *
3534enable_times (int enabled = enable_times)
3535 CODE:
3536{
3537 RETVAL = boolSV (enable_times);
3538
3539 if (enabled != enable_times)
3540 {
3541 enable_times = enabled;
3542
3543 coro_times_update ();
3544 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3545 }
3546}
3547 OUTPUT:
3548 RETVAL
3549
3550void
3551times (Coro::State self)
3552 PPCODE:
3553{
3554 struct coro *current = SvSTATE (coro_current);
3555
3556 if (expect_false (current == self))
3557 {
3558 coro_times_update ();
3559 coro_times_add (SvSTATE (coro_current));
3560 }
3561
3562 EXTEND (SP, 2);
3563 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3564 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3565
3566 if (expect_false (current == self))
3567 coro_times_sub (SvSTATE (coro_current));
3568}
3569
3570void
3571swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3572 CODE:
3573{
3574 struct coro *current = SvSTATE_current;
3575
3576 if (current == coro)
3577 SWAP_SVS (current);
3578
3579 if (!coro->swap_sv)
3580 coro->swap_sv = newAV ();
3581
3582 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3583 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3584
3585 if (current == coro)
3586 SWAP_SVS (current);
3587}
3588
3589
2427MODULE = Coro::State PACKAGE = Coro 3590MODULE = Coro::State PACKAGE = Coro
2428 3591
2429BOOT: 3592BOOT:
2430{ 3593{
2431 int i;
2432
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3594 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3595 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 3596 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3597 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 SvREADONLY_on (coro_current); 3598 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3599 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3600 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3601 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2439 3602
3603 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3604 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3605 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3606 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3607
2440 coro_stash = gv_stashpv ("Coro", TRUE); 3608 coro_stash = gv_stashpv ("Coro", TRUE);
2441 3609
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3610 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3611 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3612 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3613 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2446 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3614 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2447 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3615 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2448
2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2450 coro_ready[i] = newAV ();
2451 3616
2452 { 3617 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3618 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 3619
2455 coroapi.schedule = api_schedule; 3620 coroapi.schedule = api_schedule;
3621 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 3622 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 3623 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 3624 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 3625 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 3626 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 3627 coroapi.current = coro_current;
2462 3628
2463 GCoroAPI = &coroapi; 3629 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 3630 sv_setiv (sv, (IV)&coroapi);
2465 SvREADONLY_on (sv); 3631 SvREADONLY_on (sv);
2466 } 3632 }
2467} 3633}
3634
3635SV *
3636async (...)
3637 PROTOTYPE: &@
3638 CODE:
3639 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3640 api_ready (aTHX_ RETVAL);
3641 OUTPUT:
3642 RETVAL
3643
3644void
3645_destroy (Coro::State coro)
3646 CODE:
3647 /* used by the manager thread */
3648 coro_state_destroy (aTHX_ coro);
3649 coro_call_on_destroy (aTHX_ coro);
3650
3651void
3652terminate (...)
3653 CODE:
3654 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3655
3656void
3657cancel (...)
3658 CODE:
3659 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3660
3661int
3662safe_cancel (Coro::State self, ...)
3663 C_ARGS: aTHX_ self, &ST (1), items - 1
2468 3664
2469void 3665void
2470schedule (...) 3666schedule (...)
2471 CODE: 3667 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3668 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3669
3670void
3671schedule_to (...)
3672 CODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3674
3675void
3676cede_to (...)
3677 CODE:
3678 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2473 3679
2474void 3680void
2475cede (...) 3681cede (...)
2476 CODE: 3682 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 3683 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2491void 3697void
2492_set_readyhook (SV *hook) 3698_set_readyhook (SV *hook)
2493 PROTOTYPE: $ 3699 PROTOTYPE: $
2494 CODE: 3700 CODE:
2495 SvREFCNT_dec (coro_readyhook); 3701 SvREFCNT_dec (coro_readyhook);
3702 SvGETMAGIC (hook);
3703 if (SvOK (hook))
3704 {
2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3705 coro_readyhook = newSVsv (hook);
3706 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3707 }
3708 else
3709 {
3710 coro_readyhook = 0;
3711 CORO_READYHOOK = 0;
3712 }
2497 3713
2498int 3714int
2499prio (Coro::State coro, int newprio = 0) 3715prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
2501 ALIAS: 3717 ALIAS:
… …
2507 if (items > 1) 3723 if (items > 1)
2508 { 3724 {
2509 if (ix) 3725 if (ix)
2510 newprio = coro->prio - newprio; 3726 newprio = coro->prio - newprio;
2511 3727
2512 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3728 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2513 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3729 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2514 3730
2515 coro->prio = newprio; 3731 coro->prio = newprio;
2516 } 3732 }
2517} 3733}
2518 OUTPUT: 3734 OUTPUT:
… …
2532 CODE: 3748 CODE:
2533 RETVAL = coro_nready; 3749 RETVAL = coro_nready;
2534 OUTPUT: 3750 OUTPUT:
2535 RETVAL 3751 RETVAL
2536 3752
2537# for async_pool speedup
2538void 3753void
2539_pool_1 (SV *cb) 3754suspend (Coro::State self)
3755 PROTOTYPE: $
2540 CODE: 3756 CODE:
2541{ 3757 self->flags |= CF_SUSPENDED;
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548 3758
2549 if (!invoke) 3759void
3760resume (Coro::State self)
3761 PROTOTYPE: $
3762 CODE:
3763 self->flags &= ~CF_SUSPENDED;
3764
3765void
3766_pool_handler (...)
3767 CODE:
3768 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3769
3770void
3771async_pool (SV *cv, ...)
3772 PROTOTYPE: &@
3773 PPCODE:
3774{
3775 HV *hv = (HV *)av_pop (av_async_pool);
3776 AV *av = newAV ();
3777 SV *cb = ST (0);
3778 int i;
3779
3780 av_extend (av, items - 2);
3781 for (i = 1; i < items; ++i)
3782 av_push (av, SvREFCNT_inc_NN (ST (i)));
3783
3784 if ((SV *)hv == &PL_sv_undef)
2550 { 3785 {
2551 SV *old = PL_diehook; 3786 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2552 PL_diehook = 0; 3787 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2553 SvREFCNT_dec (old); 3788 SvREFCNT_dec (sv);
2554 croak ("\3async_pool terminate\2\n");
2555 } 3789 }
2556 3790
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 { 3791 {
2570 av_fill (defav, len - 1); 3792 struct coro *coro = SvSTATE_hv (hv);
2571 for (i = 0; i < len; ++i) 3793
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3794 assert (!coro->invoke_cb);
3795 assert (!coro->invoke_av);
3796 coro->invoke_cb = SvREFCNT_inc (cb);
3797 coro->invoke_av = av;
2573 } 3798 }
3799
3800 api_ready (aTHX_ (SV *)hv);
3801
3802 if (GIMME_V != G_VOID)
3803 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3804 else
3805 SvREFCNT_dec (hv);
2574} 3806}
3807
3808SV *
3809rouse_cb ()
3810 PROTOTYPE:
3811 CODE:
3812 RETVAL = coro_new_rouse_cb (aTHX);
3813 OUTPUT:
3814 RETVAL
2575 3815
2576void 3816void
2577_pool_2 (SV *cb) 3817rouse_wait (...)
3818 PROTOTYPE: ;$
3819 PPCODE:
3820 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3821
3822void
3823on_enter (SV *block)
3824 ALIAS:
3825 on_leave = 1
3826 PROTOTYPE: &
2578 CODE: 3827 CODE:
2579{ 3828{
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv); 3829 struct coro *coro = SvSTATE_current;
3830 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2582 3831
2583 sv_setsv (cb, &PL_sv_undef); 3832 block = s_get_cv_croak (block);
2584 3833
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3834 if (!*avp)
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611
2612void
2613_get_state (SV *self)
2614 PROTOTYPE: $
2615 PPCODE:
2616{
2617 AV *defav = GvAV (PL_defgv);
2618 AV *av = newAV (); 3835 *avp = newAV ();
2619 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 3836
2625 data->errorno = errno; 3837 av_push (*avp, SvREFCNT_inc (block));
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 3838
2630 av_extend (av, AvFILLp (defav) + 1 + 1); 3839 if (!ix)
3840 on_enterleave_call (aTHX_ block);
2631 3841
2632 for (i = 0; i <= AvFILLp (defav); ++i) 3842 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3843 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2634 3844 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 {
2682 PUSHMARK (SP);
2683 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2685 SPAGAIN;
2686 }
2687
2688 --incede;
2689} 3845}
2690 3846
2691 3847
2692MODULE = Coro::State PACKAGE = PerlIO::cede 3848MODULE = Coro::State PACKAGE = PerlIO::cede
2693 3849
2694BOOT: 3850BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3851 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 3852
3853
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 3854MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 3855
2699SV * 3856SV *
2700new (SV *klass, SV *count_ = 0) 3857new (SV *klass, SV *count = 0)
2701 CODE: 3858 CODE:
2702{ 3859{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3860 int semcnt = 1;
2704 AV *av = newAV (); 3861
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3862 if (count)
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3863 {
3864 SvGETMAGIC (count);
3865
3866 if (SvOK (count))
3867 semcnt = SvIV (count);
3868 }
3869
3870 RETVAL = sv_bless (
3871 coro_waitarray_new (aTHX_ semcnt),
3872 GvSTASH (CvGV (cv))
3873 );
2707} 3874}
3875 OUTPUT:
3876 RETVAL
3877
3878# helper for Coro::Channel and others
3879SV *
3880_alloc (int count)
3881 CODE:
3882 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 3883 OUTPUT:
2709 RETVAL 3884 RETVAL
2710 3885
2711SV * 3886SV *
2712count (SV *self) 3887count (SV *self)
… …
2721 adjust = 1 3896 adjust = 1
2722 CODE: 3897 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3898 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724 3899
2725void 3900void
2726down (SV *self) 3901down (...)
2727 CODE: 3902 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3903 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3904
3905void
3906wait (...)
3907 CODE:
3908 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 3909
2730void 3910void
2731try (SV *self) 3911try (SV *self)
2732 PPCODE: 3912 PPCODE:
2733{ 3913{
… …
2745 XSRETURN_NO; 3925 XSRETURN_NO;
2746} 3926}
2747 3927
2748void 3928void
2749waiters (SV *self) 3929waiters (SV *self)
2750 CODE: 3930 PPCODE:
2751{ 3931{
2752 AV *av = (AV *)SvRV (self); 3932 AV *av = (AV *)SvRV (self);
3933 int wcount = AvFILLp (av) + 1 - 1;
2753 3934
2754 if (GIMME_V == G_SCALAR) 3935 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3936 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 3937 else
2757 { 3938 {
2758 int i; 3939 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 3940 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 3941 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 3942 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 3943 }
2763} 3944}
2764 3945
3946MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3947
3948void
3949_may_delete (SV *sem, int count, int extra_refs)
3950 PPCODE:
3951{
3952 AV *av = (AV *)SvRV (sem);
3953
3954 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3955 && AvFILLp (av) == 0 /* no waiters, just count */
3956 && SvIV (AvARRAY (av)[0]) == count)
3957 XSRETURN_YES;
3958
3959 XSRETURN_NO;
3960}
3961
3962MODULE = Coro::State PACKAGE = Coro::Signal
3963
3964SV *
3965new (SV *klass)
3966 CODE:
3967 RETVAL = sv_bless (
3968 coro_waitarray_new (aTHX_ 0),
3969 GvSTASH (CvGV (cv))
3970 );
3971 OUTPUT:
3972 RETVAL
3973
3974void
3975wait (...)
3976 CODE:
3977 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3978
3979void
3980broadcast (SV *self)
3981 CODE:
3982{
3983 AV *av = (AV *)SvRV (self);
3984 coro_signal_wake (aTHX_ av, AvFILLp (av));
3985}
3986
3987void
3988send (SV *self)
3989 CODE:
3990{
3991 AV *av = (AV *)SvRV (self);
3992
3993 if (AvFILLp (av))
3994 coro_signal_wake (aTHX_ av, 1);
3995 else
3996 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3997}
3998
3999IV
4000awaited (SV *self)
4001 CODE:
4002 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4003 OUTPUT:
4004 RETVAL
4005
4006
4007MODULE = Coro::State PACKAGE = Coro::AnyEvent
4008
4009BOOT:
4010 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4011
4012void
4013_schedule (...)
4014 CODE:
4015{
4016 static int incede;
4017
4018 api_cede_notself (aTHX);
4019
4020 ++incede;
4021 while (coro_nready >= incede && api_cede (aTHX))
4022 ;
4023
4024 sv_setsv (sv_activity, &PL_sv_undef);
4025 if (coro_nready >= incede)
4026 {
4027 PUSHMARK (SP);
4028 PUTBACK;
4029 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4030 }
4031
4032 --incede;
4033}
4034
4035
4036MODULE = Coro::State PACKAGE = Coro::AIO
4037
4038void
4039_register (char *target, char *proto, SV *req)
4040 CODE:
4041{
4042 SV *req_cv = s_get_cv_croak (req);
4043 /* newXSproto doesn't return the CV on 5.8 */
4044 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4045 sv_setpv ((SV *)slf_cv, proto);
4046 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4047}
4048
4049MODULE = Coro::State PACKAGE = Coro::Select
4050
4051void
4052patch_pp_sselect ()
4053 CODE:
4054 if (!coro_old_pp_sselect)
4055 {
4056 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4057 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4058 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4059 }
4060
4061void
4062unpatch_pp_sselect ()
4063 CODE:
4064 if (coro_old_pp_sselect)
4065 {
4066 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4067 coro_old_pp_sselect = 0;
4068 }
4069

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