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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.393 by root, Fri Apr 29 17:38:56 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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 110# if CORO_PTHREAD
152static void *coro_thx; 111static void *coro_thx;
153# endif 112# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 113#endif
161 114
162# undef LOCK 115#ifdef __linux
163# define LOCK (void)0 116# include <time.h> /* for timespec */
164# undef UNLOCK 117# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 118# ifdef SYS_clock_gettime
166 119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 120# define CORO_CLOCK_MONOTONIC 1
168struct io_state 121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 122# endif
170 AV *res; 123#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 124
177static 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);
178 131
179static U32 cctx_gen; 132static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 133static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 134static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 135static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 136static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 137static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 138static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 139
140static AV *av_destroy; /* destruction queue */
141static SV *sv_manager; /* the manager coro */
142static SV *sv_idle; /* $Coro::idle */
187 143
188static GV *irsgv; /* $/ */ 144static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 145static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 146static SV *rv_diehook;
191static SV *rv_warnhook; 147static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 148static HV *hv_sig; /* %SIG */
193 149
194/* async_pool helper stuff */ 150/* async_pool helper stuff */
195static SV *sv_pool_rss; 151static SV *sv_pool_rss;
196static SV *sv_pool_size; 152static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 154static AV *av_async_pool; /* idle pool */
155static SV *sv_Coro; /* class string */
156static CV *cv_pool_handler;
198 157
199/* Coro::AnyEvent */ 158/* Coro::AnyEvent */
200static SV *sv_activity; 159static SV *sv_activity;
160
161/* enable processtime/realtime profiling */
162static char enable_times;
163typedef U32 coro_ts[2];
164static coro_ts time_real, time_cpu;
165static char times_valid;
201 166
202static struct coro_cctx *cctx_first; 167static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 168static int cctx_count, cctx_idle;
204 169
205enum { 170enum {
… …
231 int valgrind_id; 196 int valgrind_id;
232#endif 197#endif
233 unsigned char flags; 198 unsigned char flags;
234} coro_cctx; 199} coro_cctx;
235 200
201static coro_cctx *cctx_current; /* the currently running cctx */
202
203/*****************************************************************************/
204
236enum { 205enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
241}; 212};
242 213
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 214/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 215typedef struct
245{ 216{
246 SV *defsv; 217 SV *defsv;
247 AV *defav; 218 AV *defav;
248 SV *errsv; 219 SV *errsv;
249 SV *irsgv; 220 SV *irsgv;
221 HV *hinthv;
250#define VAR(name,type) type name; 222#define VAR(name,type) type name;
251# include "state.h" 223# include "state.h"
252#undef VAR 224#undef VAR
253} perl_slots; 225} perl_slots;
254 226
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 227#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 228
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 229/* this is a structure representing a perl-level coroutine */
267struct coro { 230struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 231 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 232 coro_cctx *cctx;
270 233
271 /* process data */ 234 /* ready queue */
235 struct coro *next_ready;
236
237 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 238 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 239 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 240 perl_slots *slot; /* basically the saved sp */
276 241
242 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 243 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 244 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 245 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 246 HV *hv; /* the perl hash associated with this coro, if any */
247 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
281 248
282 /* statistics */ 249 /* statistics */
283 int usecount; /* number of transfers to this coro */ 250 int usecount; /* number of transfers to this coro */
284 251
285 /* coro process data */ 252 /* coro process data */
286 int prio; 253 int prio;
287 SV *throw; /* exception to be thrown */ 254 SV *except; /* exception to be thrown */
255 SV *rouse_cb;
288 256
289 /* async_pool */ 257 /* async_pool */
290 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;
291 271
292 /* linked list */ 272 /* linked list */
293 struct coro *next, *prev; 273 struct coro *next, *prev;
294}; 274};
295 275
296typedef struct coro *Coro__State; 276typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 277typedef struct coro *Coro__State_or_hashref;
298 278
279/* the following variables are effectively part of the perl context */
280/* and get copied between struct coro and these variables */
281/* the main reason we don't support windows process emulation */
299static struct slf_frame slf_frame; /* the current slf frame */ 282static struct CoroSLF slf_frame; /* the current slf frame */
300 283
301/** Coro ********************************************************************/ 284/** Coro ********************************************************************/
302 285
303#define PRIO_MAX 3 286#define CORO_PRIO_MAX 3
304#define PRIO_HIGH 1 287#define CORO_PRIO_HIGH 1
305#define PRIO_NORMAL 0 288#define CORO_PRIO_NORMAL 0
306#define PRIO_LOW -1 289#define CORO_PRIO_LOW -1
307#define PRIO_IDLE -3 290#define CORO_PRIO_IDLE -3
308#define PRIO_MIN -4 291#define CORO_PRIO_MIN -4
309 292
310/* for Coro.pm */ 293/* for Coro.pm */
311static SV *coro_current; 294static SV *coro_current;
312static SV *coro_readyhook; 295static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate;
314static struct coro *coro_first; 298static struct coro *coro_first;
315#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
316 372
317/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
318 374
319static SV * 375static SV *
320coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
… …
344 get_hv (name, create); 400 get_hv (name, create);
345#endif 401#endif
346 return get_hv (name, create); 402 return get_hv (name, create);
347} 403}
348 404
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
349static AV * 504static AV *
350coro_clone_padlist (pTHX_ CV *cv) 505coro_derive_padlist (pTHX_ CV *cv)
351{ 506{
352 AV *padlist = CvPADLIST (cv); 507 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 508 AV *newpadlist, *newpad;
354 509
355 newpadlist = newAV (); 510 newpadlist = newAV ();
… …
360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
361#endif 516#endif
362 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
363 --AvFILLp (padlist); 518 --AvFILLp (padlist);
364 519
365 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
366 av_store (newpadlist, 1, (SV *)newpad); 521 av_store (newpadlist, 1, (SV *)newpad);
367 522
368 return newpadlist; 523 return newpadlist;
369} 524}
370 525
371static void 526static void
372free_padlist (pTHX_ AV *padlist) 527free_padlist (pTHX_ AV *padlist)
373{ 528{
374 /* may be during global destruction */ 529 /* may be during global destruction */
375 if (SvREFCNT (padlist)) 530 if (!IN_DESTRUCT)
376 { 531 {
377 I32 i = AvFILLp (padlist); 532 I32 i = AvFILLp (padlist);
378 while (i >= 0) 533
534 while (i > 0) /* special-case index 0 */
379 { 535 {
380 SV **svp = av_fetch (padlist, i--, FALSE); 536 /* we try to be extra-careful here */
381 if (svp) 537 AV *av = (AV *)AvARRAY (padlist)[i--];
382 { 538 I32 j = AvFILLp (av);
383 SV *sv; 539
384 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 540 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]);
542
543 AvFILLp (av) = -1;
385 SvREFCNT_dec (sv); 544 SvREFCNT_dec (av);
386
387 SvREFCNT_dec (*svp);
388 }
389 } 545 }
390 546
547 SvREFCNT_dec (AvARRAY (padlist)[0]);
548
549 AvFILLp (padlist) = -1;
391 SvREFCNT_dec ((SV*)padlist); 550 SvREFCNT_dec ((SV*)padlist);
392 } 551 }
393} 552}
394 553
395static int 554static int
396coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 555coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
397{ 556{
398 AV *padlist; 557 AV *padlist;
399 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;
400 563
401 /* casting is fun. */ 564 /* casting is fun. */
402 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
403 free_padlist (aTHX_ padlist); 566 free_padlist (aTHX_ padlist);
404 567
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 569
407 return 0; 570 return 0;
408} 571}
409
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext
411#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 572
413static MGVTBL coro_cv_vtbl = { 573static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 574 0, 0, 0, 0,
415 coro_cv_free 575 coro_cv_free
416}; 576};
417
418#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \
420 ? SvMAGIC (sv)->mg_type == type \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0
424
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427
428INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro)
430{
431 HV *stash;
432 MAGIC *mg;
433
434 if (SvROK (coro))
435 coro = SvRV (coro);
436
437 if (expect_false (SvTYPE (coro) != SVt_PVHV))
438 croak ("Coro::State object required");
439
440 stash = SvSTASH (coro);
441 if (expect_false (stash != coro_stash && stash != coro_state_stash))
442 {
443 /* very slow, but rare, check */
444 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
445 croak ("Coro::State object required");
446 }
447
448 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr;
450}
451
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
453 577
454/* the next two functions merely cache the padlists */ 578/* the next two functions merely cache the padlists */
455static void 579static void
456get_padlist (pTHX_ CV *cv) 580get_padlist (pTHX_ CV *cv)
457{ 581{
… …
463 else 587 else
464 { 588 {
465#if CORO_PREFER_PERL_FUNCTIONS 589#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 590 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 591 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 592 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 593 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 594 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 595 SvREFCNT_dec (cp);
472#else 596#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 598#endif
475 } 599 }
476} 600}
477 601
478static void 602static void
… …
485 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);
486 610
487 av = (AV *)mg->mg_obj; 611 av = (AV *)mg->mg_obj;
488 612
489 if (expect_false (AvFILLp (av) >= AvMAX (av))) 613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
490 av_extend (av, AvMAX (av) + 1); 614 av_extend (av, AvFILLp (av) + 1);
491 615
492 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
493} 617}
494 618
495/** 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);
496 674
497static void 675static void
498load_perl (pTHX_ Coro__State c) 676load_perl (pTHX_ Coro__State c)
499{ 677{
500 perl_slots *slot = c->slot; 678 perl_slots *slot = c->slot;
501 c->slot = 0; 679 c->slot = 0;
502 680
503 PL_mainstack = c->mainstack; 681 PL_mainstack = c->mainstack;
504 682
505 GvSV (PL_defgv) = slot->defsv; 683 GvSV (PL_defgv) = slot->defsv;
506 GvAV (PL_defgv) = slot->defav; 684 GvAV (PL_defgv) = slot->defav;
507 GvSV (PL_errgv) = slot->errsv; 685 GvSV (PL_errgv) = slot->errsv;
508 GvSV (irsgv) = slot->irsgv; 686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
509 688
510 #define VAR(name,type) PL_ ## name = slot->name; 689 #define VAR(name,type) PL_ ## name = slot->name;
511 # include "state.h" 690 # include "state.h"
512 #undef VAR 691 #undef VAR
513 692
… …
525 } 704 }
526 705
527 PUTBACK; 706 PUTBACK;
528 } 707 }
529 708
530 slf_frame = c->slf_frame; 709 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 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);
532} 729}
533 730
534static void 731static void
535save_perl (pTHX_ Coro__State c) 732save_perl (pTHX_ Coro__State c)
536{ 733{
537 c->slf_data = coroapi.slf_data; 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;
538 c->slf_frame = slf_frame; 753 c->slf_frame = slf_frame;
539 754
540 { 755 {
541 dSP; 756 dSP;
542 I32 cxix = cxstack_ix; 757 I32 cxix = cxstack_ix;
… …
554 { 769 {
555 while (expect_true (cxix >= 0)) 770 while (expect_true (cxix >= 0))
556 { 771 {
557 PERL_CONTEXT *cx = &ccstk[cxix--]; 772 PERL_CONTEXT *cx = &ccstk[cxix--];
558 773
559 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))
560 { 775 {
561 CV *cv = cx->blk_sub.cv; 776 CV *cv = cx->blk_sub.cv;
562 777
563 if (expect_true (CvDEPTH (cv))) 778 if (expect_true (CvDEPTH (cv)))
564 { 779 {
… …
588 /* we manually unroll here, as usually 2 slots is enough */ 803 /* we manually unroll here, as usually 2 slots is enough */
589 if (SLOT_COUNT >= 1) CXINC; 804 if (SLOT_COUNT >= 1) CXINC;
590 if (SLOT_COUNT >= 2) CXINC; 805 if (SLOT_COUNT >= 2) CXINC;
591 if (SLOT_COUNT >= 3) CXINC; 806 if (SLOT_COUNT >= 3) CXINC;
592 { 807 {
593 int i; 808 unsigned int i;
594 for (i = 3; i < SLOT_COUNT; ++i) 809 for (i = 3; i < SLOT_COUNT; ++i)
595 CXINC; 810 CXINC;
596 } 811 }
597 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 812 cxstack_ix -= SLOT_COUNT; /* undo allocation */
598 813
599 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
600 815
601 { 816 {
602 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
603 818
604 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
605 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
606 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
607 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
608 824
609 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
610 # include "state.h" 826 # include "state.h"
611 #undef VAR 827 #undef VAR
612 } 828 }
… …
617 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
620 */ 836 */
621#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
623#else 839#else
624static void 840static void
625coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
626{ 842{
627 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 907 Safefree (PL_retstack);
692#endif 908#endif
693} 909}
694 910
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
695static size_t 920static size_t
696coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
697{ 922{
698 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
699 924
700 if (coro->mainstack) 925 if (coro->mainstack)
701 { 926 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
706 { 928 {
707 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
708 930 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 931 #undef SYM
712 } 932 }
713 else 933 else
714 slot = coro->slot;
715
716 if (slot)
717 { 934 {
718 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 938 }
730 } 939 }
731 940
732 return rss; 941 return rss;
733} 942}
… …
746#endif 955#endif
747 956
748/* 957/*
749 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
750 * 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
751 * 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
752 * readback here. 961 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 962 */
757static int 963static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 965{
760 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 1020
815 if (svp) 1021 if (svp)
816 { 1022 {
817 SV *old = *svp; 1023 SV *old = *svp;
818 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
820 return 0; 1026 return 0;
821 } 1027 }
822 } 1028 }
823 1029
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1030 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 1031}
826 1032
827static void 1033static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 1034prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 1035{
830 /* kind of mega-hacky, but works */ 1036 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 1037 ta->next = ta->prev = (struct coro *)ta;
832} 1038}
833 1039
834static int 1040static int
835slf_check_nop (aTHX) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 1042{
837 return 0; 1043 return 0;
838} 1044}
839 1045
840static void 1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
1053
1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
842{ 1056{
843 /* 1057 /*
844 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
845 */ 1059 */
846 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
847 1061
848 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
849 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
850 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
851 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
852 PL_curpm = 0; 1069 PL_curpm = 0;
853 PL_curpad = 0; 1070 PL_curpad = 0;
854 PL_localizing = 0; 1071 PL_localizing = 0;
855 PL_dirty = 0;
856 PL_restartop = 0; 1072 PL_restartop = 0;
857#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
858 PL_parser = 0; 1074 PL_parser = 0;
859#endif 1075#endif
1076 PL_hints = 0;
860 1077
861 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
862 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 );
863 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);
864 1081
865 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
866 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
867 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
868 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;
869 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
870 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
871 1089
872 { 1090 {
873 dSP; 1091 dSP;
874 UNOP myop; 1092 UNOP myop;
875 1093
876 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
879 1098
880 PUSHMARK (SP); 1099 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 1101 PUTBACK;
883 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 1104 }
887 1105
888 /* 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
889 * 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.
890 */ 1108 */
891 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 */
892 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 */
893}
894 1111
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1113 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf;
1116 /* no flags etc. required, as an init function won't be called */
1117
1118 PL_op = (OP *)&init_perl_op;
1119
1120 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except;
1122
1123 SWAP_SVS (coro);
1124
1125 if (expect_false (enable_times))
1126 {
1127 coro_times_update ();
1128 coro_times_sub (coro);
1129 }
1130}
1131
895static void 1132static void
896coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
897{ 1134{
898 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
899 { 1136 {
900 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
901 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
909 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
910 1147
911 /* unwind main stack */ 1148 /* unwind main stack */
912 dounwind (-1); 1149 dounwind (-1);
913 } 1150 }
1151}
914 1152
915 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
916 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
917 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
918 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
919 SvREFCNT_dec (PL_rs);
920 SvREFCNT_dec (GvSV (irsgv));
921 1157
922 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook);
924 1158 {
1159 struct coro *current = SvSTATE_current;
1160
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162
1163 save_perl (aTHX_ current);
1164 load_perl (aTHX_ coro);
1165
1166 coro_unwind_stacks (aTHX);
1167 coro_destruct_stacks (aTHX);
1168
1169 /* restore swapped sv's */
1170 SWAP_SVS (coro);
1171
1172 // now save some sv's to be free'd later
1173 svf [0] = GvSV (PL_defgv);
1174 svf [1] = (SV *)GvAV (PL_defgv);
1175 svf [2] = GvSV (PL_errgv);
1176 svf [3] = (SV *)PL_defoutgv;
1177 svf [4] = PL_rs;
1178 svf [5] = GvSV (irsgv);
1179 svf [6] = (SV *)GvHV (PL_hintgv);
1180 svf [7] = PL_diehook;
1181 svf [8] = PL_warnhook;
1182 assert (9 == sizeof (svf) / sizeof (*svf));
1183
1184 load_perl (aTHX_ current);
1185 }
1186
1187 {
1188 unsigned int i;
1189
1190 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1191 SvREFCNT_dec (svf [i]);
1192
925 SvREFCNT_dec (coro->saved_deffh); 1193 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 1194 SvREFCNT_dec (coro->rouse_cb);
927 1195 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1196 SvREFCNT_dec (coro->invoke_av);
1197 }
929} 1198}
930 1199
931INLINE void 1200INLINE void
932free_coro_mortal (pTHX) 1201free_coro_mortal (pTHX)
933{ 1202{
… …
941static int 1210static int
942runops_trace (pTHX) 1211runops_trace (pTHX)
943{ 1212{
944 COP *oldcop = 0; 1213 COP *oldcop = 0;
945 int oldcxix = -2; 1214 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1215
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1216 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1217 {
951 PERL_ASYNC_CHECK (); 1218 PERL_ASYNC_CHECK ();
952 1219
953 if (cctx->flags & CC_TRACE_ALL) 1220 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1221 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1222 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1223 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1224 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1225 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1226 AV *av = newAV (); /* return values */
960 SV **cb; 1227 SV **cb;
… …
997 1264
998 if (PL_curcop != &PL_compiling) 1265 if (PL_curcop != &PL_compiling)
999 { 1266 {
1000 SV **cb; 1267 SV **cb;
1001 1268
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1269 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1270 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1272
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1273 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1274 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1275 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1276 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1277 SV *fullname = sv_2mortal (newSV (0));
1012 1278
1013 if (isGV (gv)) 1279 if (isGV (gv))
… …
1018 SAVETMPS; 1284 SAVETMPS;
1019 EXTEND (SP, 3); 1285 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1286 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1287 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1288 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1289 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1290 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1291 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1292 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1293 SPAGAIN;
1028 FREETMPS; 1294 FREETMPS;
… …
1031 } 1297 }
1032 1298
1033 oldcxix = cxstack_ix; 1299 oldcxix = cxstack_ix;
1034 } 1300 }
1035 1301
1036 if (cctx->flags & CC_TRACE_LINE) 1302 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1303 {
1038 dSP; 1304 dSP;
1039 1305
1040 PL_runops = RUNOPS_DEFAULT; 1306 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1307 ENTER;
… …
1060 1326
1061 TAINT_NOT; 1327 TAINT_NOT;
1062 return 0; 1328 return 0;
1063} 1329}
1064 1330
1331static struct CoroSLF cctx_ssl_frame;
1332
1065static void 1333static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1334slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1335{
1068 ta->prev = (struct coro *)cctx;
1069 ta->next = 0; 1336 ta->prev = 0;
1070} 1337}
1071 1338
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1339static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1340slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1341{
1075/* also initialises PL_top_env */ 1342 *frame = cctx_ssl_frame;
1343
1344 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1345}
1346
1347/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1348static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1349cctx_prepare (pTHX)
1078{ 1350{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1351 PL_top_env = &PL_start_env;
1083 1352
1084 if (cctx->flags & CC_TRACE) 1353 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1354 PL_runops = runops_trace;
1086 1355
1087 Zero (&myop, 1, UNOP); 1356 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1357 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1358 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1359 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1360
1091 PUSHMARK (SP); 1361 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1362 cctx_ssl_frame = slf_frame;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1363
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1364 slf_frame.prepare = slf_prepare_set_stacklevel;
1095 PUTBACK; 1365 slf_frame.check = slf_check_set_stacklevel;
1096 PL_op = (OP *)&myop;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1366}
1100 1367
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1368/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1369INLINE void
1103transfer_tail (pTHX) 1370transfer_tail (pTHX)
1104{ 1371{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1372 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1373}
1121 1374
1122/* 1375/*
1123 * this is a _very_ stripped down perl interpreter ;) 1376 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1377 */
… …
1136 /* normally we would need to skip the entersub here */ 1389 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1390 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1391 /* PL_nop = PL_nop->op_next */
1139 1392
1140 /* inject a fake subroutine call to cctx_init */ 1393 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1394 cctx_prepare (aTHX);
1142 1395
1143 /* cctx_run is the alternative tail of transfer() */ 1396 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1397 transfer_tail (aTHX);
1146 1398
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1399 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1400 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1401 perl_run (PL_curinterp);
1402 /*
1403 * Unfortunately, there is no way to get at the return values of the
1404 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1405 * runtime errors here, as this is just a random interpreter, not a thread.
1406 */
1150 1407
1151 /* 1408 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1409 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1410 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1411 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1412 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1413 * coroutine as Coro has no such concept.
1414 * This actually isn't valid with the pthread backend, but OSes requiring
1415 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1416 */
1158 PL_top_env = main_top_env; 1417 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1418 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1419 }
1161} 1420}
… …
1238cctx_destroy (coro_cctx *cctx) 1497cctx_destroy (coro_cctx *cctx)
1239{ 1498{
1240 if (!cctx) 1499 if (!cctx)
1241 return; 1500 return;
1242 1501
1502 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1503
1243 --cctx_count; 1504 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1505 coro_destroy (&cctx->cctx);
1245 1506
1246 /* coro_transfer creates new, empty cctx's */ 1507 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1508 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1566/** coroutine switching *****************************************************/
1306 1567
1307static void 1568static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1569transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1570{
1571 /* TODO: throwing up here is considered harmful */
1572
1310 if (expect_true (prev != next)) 1573 if (expect_true (prev != next))
1311 { 1574 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1575 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1576 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1577
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED)) 1578 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1579 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1580
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1581#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1582 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1583 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1584#endif
1325 } 1585 }
1326} 1586}
1327 1587
1328/* always use the TRANSFER macro */ 1588/* always use the TRANSFER macro */
1329static void NOINLINE 1589static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1590transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1591{
1332 dSTACKLEVEL; 1592 dSTACKLEVEL;
1333 1593
1334 /* sometimes transfer is only called to set idle_sp */ 1594 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1595 if (expect_false (!prev))
1336 { 1596 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1597 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1598 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1599 }
1340 else if (expect_true (prev != next)) 1600 else if (expect_true (prev != next))
1341 { 1601 {
1342 coro_cctx *prev__cctx; 1602 coro_cctx *cctx_prev;
1343 1603
1344 if (expect_false (prev->flags & CF_NEW)) 1604 if (expect_false (prev->flags & CF_NEW))
1345 { 1605 {
1346 /* create a new empty/source context */ 1606 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1607 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1608 prev->flags |= CF_RUNNING;
1350 } 1609 }
1351 1610
1352 prev->flags &= ~CF_RUNNING; 1611 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1612 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1613
1357 /* first get rid of the old state */ 1614 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1615 save_perl (aTHX_ prev);
1359 1616
1360 if (expect_false (next->flags & CF_NEW)) 1617 if (expect_false (next->flags & CF_NEW))
1361 { 1618 {
1362 /* need to start coroutine */ 1619 /* need to start coroutine */
1363 next->flags &= ~CF_NEW; 1620 next->flags &= ~CF_NEW;
1364 /* setup coroutine call */ 1621 /* setup coroutine call */
1365 coro_setup (aTHX_ next); 1622 init_perl (aTHX_ next);
1366 } 1623 }
1367 else 1624 else
1368 load_perl (aTHX_ next); 1625 load_perl (aTHX_ next);
1369 1626
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1627 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1628 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1629 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1630 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1631 && !force_cctx
1377 )) 1632 ))
1378 { 1633 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1634 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1635 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1636
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1637 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1638 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1639 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1640 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1641 next->cctx = cctx_get (aTHX);
1389 1642
1390 cctx_put (prev__cctx); 1643 cctx_put (cctx_current);
1391 } 1644 }
1645 else
1646 prev->cctx = cctx_current;
1392 1647
1393 ++next->usecount; 1648 ++next->usecount;
1394 1649
1395 if (expect_true (!next->cctx)) 1650 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1651 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1652
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1653 next->cctx = 0;
1399 transfer_next = next;
1400 1654
1401 if (expect_false (prev__cctx != next->cctx)) 1655 if (expect_false (cctx_prev != cctx_current))
1402 { 1656 {
1403 prev__cctx->top_env = PL_top_env; 1657 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1658 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1659 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1660 }
1407 1661
1408 transfer_tail (aTHX); 1662 transfer_tail (aTHX);
1409 } 1663 }
1410} 1664}
… …
1417static int 1671static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1672coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1673{
1420 if (coro->flags & CF_DESTROYED) 1674 if (coro->flags & CF_DESTROYED)
1421 return 0; 1675 return 0;
1676
1677 if (coro->on_destroy && !PL_dirty)
1678 coro->on_destroy (aTHX_ coro);
1679
1680 /*
1681 * The on_destroy above most likely is from an SLF call.
1682 * Since by definition the SLF call will not finish when we destroy
1683 * the coro, we will have to force-finish it here, otherwise
1684 * cleanup functions cannot call SLF functions.
1685 */
1686 coro->slf_frame.prepare = 0;
1422 1687
1423 coro->flags |= CF_DESTROYED; 1688 coro->flags |= CF_DESTROYED;
1424 1689
1425 if (coro->flags & CF_READY) 1690 if (coro->flags & CF_READY)
1426 { 1691 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1692 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1693 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1694 --coro_nready;
1431 UNLOCK;
1432 } 1695 }
1433 else 1696 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1697 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1698
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1699 if (coro->mainstack
1437 { 1700 && coro->mainstack != main_mainstack
1438 struct coro temp; 1701 && coro->slot
1439 1702 && !PL_dirty)
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1703 destroy_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452
1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->args);
1455 1704
1456 if (coro->next) coro->next->prev = coro->prev; 1705 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1706 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1707 if (coro == coro_first) coro_first = coro->next;
1708
1709 cctx_destroy (coro->cctx);
1710 SvREFCNT_dec (coro->startcv);
1711 SvREFCNT_dec (coro->args);
1712 SvREFCNT_dec (coro->swap_sv);
1713 SvREFCNT_dec (CORO_THROW);
1459 1714
1460 return 1; 1715 return 1;
1461} 1716}
1462 1717
1463static int 1718static int
… …
1515 TRANSFER (ta, 1); 1770 TRANSFER (ta, 1);
1516} 1771}
1517 1772
1518/** Coro ********************************************************************/ 1773/** Coro ********************************************************************/
1519 1774
1520static void 1775INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1776coro_enq (pTHX_ struct coro *coro)
1522{ 1777{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1778 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1779
1526static SV * 1780 SvREFCNT_inc_NN (coro->hv);
1781
1782 coro->next_ready = 0;
1783 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1784 ready [1] = coro;
1785}
1786
1787INLINE struct coro *
1527coro_deq (pTHX) 1788coro_deq (pTHX)
1528{ 1789{
1529 int prio; 1790 int prio;
1530 1791
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1792 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1793 {
1533 return av_shift (coro_ready [prio]); 1794 struct coro **ready = coro_ready [prio];
1795
1796 if (ready [0])
1797 {
1798 struct coro *coro = ready [0];
1799 ready [0] = coro->next_ready;
1800 return coro;
1801 }
1802 }
1534 1803
1535 return 0; 1804 return 0;
1805}
1806
1807static void
1808invoke_sv_ready_hook_helper (void)
1809{
1810 dTHX;
1811 dSP;
1812
1813 ENTER;
1814 SAVETMPS;
1815
1816 PUSHMARK (SP);
1817 PUTBACK;
1818 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1819
1820 FREETMPS;
1821 LEAVE;
1536} 1822}
1537 1823
1538static int 1824static int
1539api_ready (pTHX_ SV *coro_sv) 1825api_ready (pTHX_ SV *coro_sv)
1540{ 1826{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1827 struct coro *coro = SvSTATE (coro_sv);
1549 1828
1550 if (coro->flags & CF_READY) 1829 if (coro->flags & CF_READY)
1551 return 0; 1830 return 0;
1552 1831
1553 coro->flags |= CF_READY; 1832 coro->flags |= CF_READY;
1554 1833
1555 LOCK; 1834 coro_enq (aTHX_ coro);
1556 1835
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1836 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1837 if (coroapi.readyhook)
1559 1838 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1839
1584 return 1; 1840 return 1;
1585} 1841}
1586 1842
1587static int 1843static int
1588api_is_ready (pTHX_ SV *coro_sv) 1844api_is_ready (pTHX_ SV *coro_sv)
1589{ 1845{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1846 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1847}
1592 1848
1849/* expects to own a reference to next->hv */
1593INLINE void 1850INLINE void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1851prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1852{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1853 SV *prev_sv = SvRV (coro_current);
1854
1640 ta->prev = SvSTATE (prev_sv); 1855 ta->prev = SvSTATE_hv (prev_sv);
1856 ta->next = next;
1857
1641 TRANSFER_CHECK (*ta); 1858 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1859
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1860 SvRV_set (coro_current, (SV *)next->hv);
1645 1861
1646 LOCK;
1647 free_coro_mortal (aTHX); 1862 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1863 coro_mortal = prev_sv;
1649 UNLOCK; 1864}
1865
1866static void
1867prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1868{
1869 for (;;)
1870 {
1871 struct coro *next = coro_deq (aTHX);
1872
1873 if (expect_true (next))
1874 {
1875 /* cannot transfer to destroyed coros, skip and look for next */
1876 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1877 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1878 else
1879 {
1880 next->flags &= ~CF_READY;
1881 --coro_nready;
1882
1883 prepare_schedule_to (aTHX_ ta, next);
1884 break;
1885 }
1886 }
1887 else
1888 {
1889 /* nothing to schedule: call the idle handler */
1890 if (SvROK (sv_idle)
1891 && SvOBJECT (SvRV (sv_idle)))
1892 {
1893 if (SvRV (sv_idle) == SvRV (coro_current))
1894 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1895
1896 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1897 api_ready (aTHX_ SvRV (sv_idle));
1898 --coro_nready;
1899 }
1900 else
1901 {
1902 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1903 dSP;
1904
1905 ENTER;
1906 SAVETMPS;
1907
1908 PUSHMARK (SP);
1909 PUTBACK;
1910 call_sv (sv_idle, G_VOID | G_DISCARD);
1911
1912 FREETMPS;
1913 LEAVE;
1914 }
1915 }
1916 }
1650} 1917}
1651 1918
1652INLINE void 1919INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1920prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1921{
… …
1675{ 1942{
1676 struct coro_transfer_args ta; 1943 struct coro_transfer_args ta;
1677 1944
1678 prepare_schedule (aTHX_ &ta); 1945 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1946 TRANSFER (ta, 1);
1947}
1948
1949static void
1950api_schedule_to (pTHX_ SV *coro_sv)
1951{
1952 struct coro_transfer_args ta;
1953 struct coro *next = SvSTATE (coro_sv);
1954
1955 SvREFCNT_inc_NN (coro_sv);
1956 prepare_schedule_to (aTHX_ &ta, next);
1680} 1957}
1681 1958
1682static int 1959static int
1683api_cede (pTHX) 1960api_cede (pTHX)
1684{ 1961{
… …
1713static void 1990static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1991api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1992{
1716 struct coro *coro = SvSTATE (coro_sv); 1993 struct coro *coro = SvSTATE (coro_sv);
1717 1994
1995 if (coro->flags & CF_RUNNING)
1996 croak ("cannot enable tracing on a running coroutine, caught");
1997
1718 if (flags & CC_TRACE) 1998 if (flags & CC_TRACE)
1719 { 1999 {
1720 if (!coro->cctx) 2000 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 2001 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 2002 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 2003 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 2004
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2005 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 2006 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2007 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 2008 {
… …
1733 else 2013 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 2014 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 2015 }
1736} 2016}
1737 2017
1738#if 0 2018static void
2019coro_call_on_destroy (pTHX_ struct coro *coro)
2020{
2021 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2022
2023 if (on_destroyp)
2024 {
2025 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2026 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2027 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2028
2029 while (AvFILLp (on_destroy) >= 0)
2030 {
2031 dSP; /* don't disturb outer sp */
2032 SV *cb = av_pop (on_destroy);
2033
2034 PUSHMARK (SP);
2035
2036 if (statusp)
2037 {
2038 int i;
2039 EXTEND (SP, AvFILLp (status) + 1);
2040
2041 for (i = 0; i <= AvFILLp (status); ++i)
2042 PUSHs (AvARRAY (status)[i]);
2043 }
2044
2045 PUTBACK;
2046 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2047 }
2048 }
2049}
2050
2051static void
2052coro_set_status (HV *coro_hv, SV **arg, int items)
2053{
2054 AV *av = newAV ();
2055
2056 /* items are actually not so common, so optimise for this case */
2057 if (items)
2058 {
2059 int i;
2060
2061 av_extend (av, items - 1);
2062
2063 for (i = 0; i < items; ++i)
2064 av_push (av, SvREFCNT_inc_NN (arg [i]));
2065 }
2066
2067 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2068}
2069
2070static void
2071slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2072{
2073 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2074 api_ready (aTHX_ sv_manager);
2075
2076 frame->prepare = prepare_schedule;
2077 frame->check = slf_check_repeat;
2078
2079 /* as a minor optimisation, we could unwind all stacks here */
2080 /* but that puts extra pressure on pp_slf, and is not worth much */
2081 /*coro_unwind_stacks (aTHX);*/
2082}
2083
2084static void
2085slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2086{
2087 HV *coro_hv = (HV *)SvRV (coro_current);
2088
2089 coro_set_status (coro_hv, arg, items);
2090 slf_init_terminate_cancel_common (frame, coro_hv);
2091}
2092
2093static void
2094slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{
2096 HV *coro_hv;
2097 struct coro *coro;
2098
2099 if (items <= 0)
2100 croak ("Coro::cancel called without coro object,");
2101
2102 coro = SvSTATE (arg [0]);
2103 coro_hv = coro->hv;
2104
2105 coro_set_status (coro_hv, arg + 1, items - 1);
2106
2107 if (expect_false (coro->flags & CF_NOCANCEL))
2108 {
2109 /* coro currently busy cancelling something, so just notify it */
2110 coro->slf_frame.data = (void *)coro;
2111
2112 frame->prepare = prepare_nop;
2113 frame->check = slf_check_nop;
2114 }
2115 else if (coro_hv == (HV *)SvRV (coro_current))
2116 {
2117 /* cancelling the current coro is allowed, and equals terminate */
2118 slf_init_terminate_cancel_common (frame, coro_hv);
2119 }
2120 else
2121 {
2122 struct coro *self = SvSTATE_current;
2123
2124 /* otherwise we cancel directly, purely for speed reasons
2125 * unfortunately, this requires some magic trickery, as
2126 * somebody else could cancel us, so we have to fight the cancellation.
2127 * this is ugly, and hopefully fully worth the extra speed.
2128 * besides, I can't get the slow-but-safe version working...
2129 */
2130 slf_frame.data = 0;
2131 self->flags |= CF_NOCANCEL;
2132
2133 coro_state_destroy (aTHX_ coro);
2134 coro_call_on_destroy (aTHX_ coro);
2135
2136 self->flags &= ~CF_NOCANCEL;
2137
2138 if (slf_frame.data)
2139 {
2140 /* while we were busy we have been cancelled, so terminate */
2141 slf_init_terminate_cancel_common (frame, self->hv);
2142 }
2143 else
2144 {
2145 frame->prepare = prepare_nop;
2146 frame->check = slf_check_nop;
2147 }
2148 }
2149}
2150
2151/*****************************************************************************/
2152/* async pool handler */
2153
1739static int 2154static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2155slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 2156{
1742 AV *padlist; 2157 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 2158 struct coro *coro = (struct coro *)frame->data;
1744 2159
1745 abort (); 2160 if (!coro->invoke_cb)
2161 return 1; /* loop till we have invoke */
2162 else
2163 {
2164 hv_store (hv, "desc", sizeof ("desc") - 1,
2165 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2166
2167 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2168
2169 {
2170 dSP;
2171 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2172 PUTBACK;
2173 }
2174
2175 SvREFCNT_dec (GvAV (PL_defgv));
2176 GvAV (PL_defgv) = coro->invoke_av;
2177 coro->invoke_av = 0;
2178
2179 return 0;
2180 }
2181}
2182
2183static void
2184slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2185{
2186 HV *hv = (HV *)SvRV (coro_current);
2187 struct coro *coro = SvSTATE_hv ((SV *)hv);
2188
2189 if (expect_true (coro->saved_deffh))
2190 {
2191 /* subsequent iteration */
2192 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2193 coro->saved_deffh = 0;
2194
2195 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2196 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2197 {
2198 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2199 coro->invoke_av = newAV ();
2200
2201 frame->prepare = prepare_nop;
2202 }
2203 else
2204 {
2205 av_clear (GvAV (PL_defgv));
2206 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2207
2208 coro->prio = 0;
2209
2210 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2211 api_trace (aTHX_ coro_current, 0);
2212
2213 frame->prepare = prepare_schedule;
2214 av_push (av_async_pool, SvREFCNT_inc (hv));
2215 }
2216 }
2217 else
2218 {
2219 /* first iteration, simply fall through */
2220 frame->prepare = prepare_nop;
2221 }
2222
2223 frame->check = slf_check_pool_handler;
2224 frame->data = (void *)coro;
2225}
2226
2227/*****************************************************************************/
2228/* rouse callback */
2229
2230#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2231
2232static void
2233coro_rouse_callback (pTHX_ CV *cv)
2234{
2235 dXSARGS;
2236 SV *data = (SV *)S_GENSUB_ARG;
2237
2238 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2239 {
2240 /* first call, set args */
2241 SV *coro = SvRV (data);
2242 AV *av = newAV ();
2243
2244 SvRV_set (data, (SV *)av);
2245
2246 /* better take a full copy of the arguments */
2247 while (items--)
2248 av_store (av, items, newSVsv (ST (items)));
2249
2250 api_ready (aTHX_ coro);
2251 SvREFCNT_dec (coro);
2252 }
2253
2254 XSRETURN_EMPTY;
2255}
2256
2257static int
2258slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2259{
2260 SV *data = (SV *)frame->data;
2261
2262 if (CORO_THROW)
2263 return 0;
2264
2265 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2266 return 1;
2267
2268 /* now push all results on the stack */
2269 {
2270 dSP;
2271 AV *av = (AV *)SvRV (data);
2272 int i;
2273
2274 EXTEND (SP, AvFILLp (av) + 1);
2275 for (i = 0; i <= AvFILLp (av); ++i)
2276 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2277
2278 /* we have stolen the elements, so set length to zero and free */
2279 AvFILLp (av) = -1;
2280 av_undef (av);
2281
2282 PUTBACK;
2283 }
1746 2284
1747 return 0; 2285 return 0;
1748} 2286}
1749 2287
1750static MGVTBL coro_gensub_vtbl = { 2288static void
1751 0, 0, 0, 0, 2289slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2290{
1753}; 2291 SV *cb;
1754#endif 2292
2293 if (items)
2294 cb = arg [0];
2295 else
2296 {
2297 struct coro *coro = SvSTATE_current;
2298
2299 if (!coro->rouse_cb)
2300 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2301
2302 cb = sv_2mortal (coro->rouse_cb);
2303 coro->rouse_cb = 0;
2304 }
2305
2306 if (!SvROK (cb)
2307 || SvTYPE (SvRV (cb)) != SVt_PVCV
2308 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2309 croak ("Coro::rouse_wait called with illegal callback argument,");
2310
2311 {
2312 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2313 SV *data = (SV *)S_GENSUB_ARG;
2314
2315 frame->data = (void *)data;
2316 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2317 frame->check = slf_check_rouse_wait;
2318 }
2319}
2320
2321static SV *
2322coro_new_rouse_cb (pTHX)
2323{
2324 HV *hv = (HV *)SvRV (coro_current);
2325 struct coro *coro = SvSTATE_hv (hv);
2326 SV *data = newRV_inc ((SV *)hv);
2327 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2328
2329 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2330 SvREFCNT_dec (data); /* magicext increases the refcount */
2331
2332 SvREFCNT_dec (coro->rouse_cb);
2333 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2334
2335 return cb;
2336}
2337
2338/*****************************************************************************/
2339/* schedule-like-function opcode (SLF) */
2340
2341static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2342static const CV *slf_cv;
2343static SV **slf_argv;
2344static int slf_argc, slf_arga; /* count, allocated */
2345static I32 slf_ax; /* top of stack, for restore */
2346
2347/* this restores the stack in the case we patched the entersub, to */
2348/* recreate the stack frame as perl will on following calls */
2349/* since entersub cleared the stack */
2350static OP *
2351pp_restore (pTHX)
2352{
2353 int i;
2354 SV **SP = PL_stack_base + slf_ax;
2355
2356 PUSHMARK (SP);
2357
2358 EXTEND (SP, slf_argc + 1);
2359
2360 for (i = 0; i < slf_argc; ++i)
2361 PUSHs (sv_2mortal (slf_argv [i]));
2362
2363 PUSHs ((SV *)CvGV (slf_cv));
2364
2365 RETURNOP (slf_restore.op_first);
2366}
2367
2368static void
2369slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2370{
2371 SV **arg = (SV **)slf_frame.data;
2372
2373 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2374}
2375
2376static void
2377slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items != 2)
2380 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2381
2382 frame->prepare = slf_prepare_transfer;
2383 frame->check = slf_check_nop;
2384 frame->data = (void *)arg; /* let's hope it will stay valid */
2385}
2386
2387static void
2388slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2389{
2390 frame->prepare = prepare_schedule;
2391 frame->check = slf_check_nop;
2392}
2393
2394static void
2395slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2396{
2397 struct coro *next = (struct coro *)slf_frame.data;
2398
2399 SvREFCNT_inc_NN (next->hv);
2400 prepare_schedule_to (aTHX_ ta, next);
2401}
2402
2403static void
2404slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2405{
2406 if (!items)
2407 croak ("Coro::schedule_to expects a coroutine argument, caught");
2408
2409 frame->data = (void *)SvSTATE (arg [0]);
2410 frame->prepare = slf_prepare_schedule_to;
2411 frame->check = slf_check_nop;
2412}
2413
2414static void
2415slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2416{
2417 api_ready (aTHX_ SvRV (coro_current));
2418
2419 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2420}
2421
2422static void
2423slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2424{
2425 frame->prepare = prepare_cede;
2426 frame->check = slf_check_nop;
2427}
2428
2429static void
2430slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2431{
2432 frame->prepare = prepare_cede_notself;
2433 frame->check = slf_check_nop;
2434}
2435
2436/*
2437 * these not obviously related functions are all rolled into one
2438 * function to increase chances that they all will call transfer with the same
2439 * stack offset
2440 * SLF stands for "schedule-like-function".
2441 */
2442static OP *
2443pp_slf (pTHX)
2444{
2445 I32 checkmark; /* mark SP to see how many elements check has pushed */
2446
2447 /* set up the slf frame, unless it has already been set-up */
2448 /* the latter happens when a new coro has been started */
2449 /* or when a new cctx was attached to an existing coroutine */
2450 if (expect_true (!slf_frame.prepare))
2451 {
2452 /* first iteration */
2453 dSP;
2454 SV **arg = PL_stack_base + TOPMARK + 1;
2455 int items = SP - arg; /* args without function object */
2456 SV *gv = *sp;
2457
2458 /* do a quick consistency check on the "function" object, and if it isn't */
2459 /* for us, divert to the real entersub */
2460 if (SvTYPE (gv) != SVt_PVGV
2461 || !GvCV (gv)
2462 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2463 return PL_ppaddr[OP_ENTERSUB](aTHX);
2464
2465 if (!(PL_op->op_flags & OPf_STACKED))
2466 {
2467 /* ampersand-form of call, use @_ instead of stack */
2468 AV *av = GvAV (PL_defgv);
2469 arg = AvARRAY (av);
2470 items = AvFILLp (av) + 1;
2471 }
2472
2473 /* now call the init function, which needs to set up slf_frame */
2474 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2475 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2476
2477 /* pop args */
2478 SP = PL_stack_base + POPMARK;
2479
2480 PUTBACK;
2481 }
2482
2483 /* now that we have a slf_frame, interpret it! */
2484 /* we use a callback system not to make the code needlessly */
2485 /* complicated, but so we can run multiple perl coros from one cctx */
2486
2487 do
2488 {
2489 struct coro_transfer_args ta;
2490
2491 slf_frame.prepare (aTHX_ &ta);
2492 TRANSFER (ta, 0);
2493
2494 checkmark = PL_stack_sp - PL_stack_base;
2495 }
2496 while (slf_frame.check (aTHX_ &slf_frame));
2497
2498 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2499
2500 /* exception handling */
2501 if (expect_false (CORO_THROW))
2502 {
2503 SV *exception = sv_2mortal (CORO_THROW);
2504
2505 CORO_THROW = 0;
2506 sv_setsv (ERRSV, exception);
2507 croak (0);
2508 }
2509
2510 /* return value handling - mostly like entersub */
2511 /* make sure we put something on the stack in scalar context */
2512 if (GIMME_V == G_SCALAR)
2513 {
2514 dSP;
2515 SV **bot = PL_stack_base + checkmark;
2516
2517 if (sp == bot) /* too few, push undef */
2518 bot [1] = &PL_sv_undef;
2519 else if (sp != bot + 1) /* too many, take last one */
2520 bot [1] = *sp;
2521
2522 SP = bot + 1;
2523
2524 PUTBACK;
2525 }
2526
2527 return NORMAL;
2528}
2529
2530static void
2531api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2532{
2533 int i;
2534 SV **arg = PL_stack_base + ax;
2535 int items = PL_stack_sp - arg + 1;
2536
2537 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2538
2539 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2540 && PL_op->op_ppaddr != pp_slf)
2541 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2542
2543 CvFLAGS (cv) |= CVf_SLF;
2544 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2545 slf_cv = cv;
2546
2547 /* we patch the op, and then re-run the whole call */
2548 /* we have to put the same argument on the stack for this to work */
2549 /* and this will be done by pp_restore */
2550 slf_restore.op_next = (OP *)&slf_restore;
2551 slf_restore.op_type = OP_CUSTOM;
2552 slf_restore.op_ppaddr = pp_restore;
2553 slf_restore.op_first = PL_op;
2554
2555 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2556
2557 if (PL_op->op_flags & OPf_STACKED)
2558 {
2559 if (items > slf_arga)
2560 {
2561 slf_arga = items;
2562 Safefree (slf_argv);
2563 New (0, slf_argv, slf_arga, SV *);
2564 }
2565
2566 slf_argc = items;
2567
2568 for (i = 0; i < items; ++i)
2569 slf_argv [i] = SvREFCNT_inc (arg [i]);
2570 }
2571 else
2572 slf_argc = 0;
2573
2574 PL_op->op_ppaddr = pp_slf;
2575 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2576
2577 PL_op = (OP *)&slf_restore;
2578}
2579
2580/*****************************************************************************/
2581/* dynamic wind */
2582
2583static void
2584on_enterleave_call (pTHX_ SV *cb)
2585{
2586 dSP;
2587
2588 PUSHSTACK;
2589
2590 PUSHMARK (SP);
2591 PUTBACK;
2592 call_sv (cb, G_VOID | G_DISCARD);
2593 SPAGAIN;
2594
2595 POPSTACK;
2596}
2597
2598static SV *
2599coro_avp_pop_and_free (pTHX_ AV **avp)
2600{
2601 AV *av = *avp;
2602 SV *res = av_pop (av);
2603
2604 if (AvFILLp (av) < 0)
2605 {
2606 *avp = 0;
2607 SvREFCNT_dec (av);
2608 }
2609
2610 return res;
2611}
2612
2613static void
2614coro_pop_on_enter (pTHX_ void *coro)
2615{
2616 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2617 SvREFCNT_dec (cb);
2618}
2619
2620static void
2621coro_pop_on_leave (pTHX_ void *coro)
2622{
2623 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2624 on_enterleave_call (aTHX_ sv_2mortal (cb));
2625}
1755 2626
1756/*****************************************************************************/ 2627/*****************************************************************************/
1757/* PerlIO::cede */ 2628/* PerlIO::cede */
1758 2629
1759typedef struct 2630typedef struct
… …
1827 PerlIOBuf_get_cnt, 2698 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2699 PerlIOBuf_set_ptrcnt,
1829}; 2700};
1830 2701
1831/*****************************************************************************/ 2702/*****************************************************************************/
2703/* Coro::Semaphore & Coro::Signal */
1832 2704
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2705static SV *
1843pp_restore (pTHX) 2706coro_waitarray_new (pTHX_ int count)
1844{ 2707{
1845 dSP; 2708 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2709 AV *av = newAV ();
2710 SV **ary;
1846 2711
1847 PUSHMARK (SP); 2712 /* unfortunately, building manually saves memory */
2713 Newx (ary, 2, SV *);
2714 AvALLOC (av) = ary;
2715#if PERL_VERSION_ATLEAST (5,10,0)
2716 AvARRAY (av) = ary;
2717#else
2718 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2719 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2720 SvPVX ((SV *)av) = (char *)ary;
2721#endif
2722 AvMAX (av) = 1;
2723 AvFILLp (av) = 0;
2724 ary [0] = newSViv (count);
1848 2725
1849 EXTEND (SP, 3); 2726 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2727}
1856 2728
1857static void 2729/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2730
1864static void 2731static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2732coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2733{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2734 SV *count_sv = AvARRAY (av)[0];
1868} 2735 IV count = SvIVX (count_sv);
1869 2736
1870static void 2737 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2738 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2739
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2740 /* now wake up as many waiters as are expected to lock */
1877} 2741 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2742 {
1912 /* first iteration */ 2743 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2744
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2745 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2746 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2747 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2748 cb = av_shift (av);
1923 2749
1924 /* pop args */ 2750 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2751 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2752 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2753 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2754 }
1934 2755 else if (SvTYPE (cb) == SVt_PVCV)
2756 {
2757 dSP;
2758 PUSHMARK (SP);
2759 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2760 PUTBACK;
2761 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2762 }
1936 2763
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2764 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2765 }
1949 struct coro_transfer_args ta; 2766}
1950 2767
1951 slf_frame.prepare (aTHX_ &ta); 2768static void
1952 TRANSFER (ta, 0); 2769coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2770{
2771 /* call $sem->adjust (0) to possibly wake up some other waiters */
2772 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2773}
1953 2774
1954 checkmark = PL_stack_sp - PL_stack_base; 2775static int
2776slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2777{
2778 AV *av = (AV *)frame->data;
2779 SV *count_sv = AvARRAY (av)[0];
2780
2781 /* if we are about to throw, don't actually acquire the lock, just throw */
2782 if (CORO_THROW)
2783 return 0;
2784 else if (SvIVX (count_sv) > 0)
1955 } 2785 {
1956 while (slf_frame.check (aTHX)); 2786 SvSTATE_current->on_destroy = 0;
1957 2787
2788 if (acquire)
2789 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2790 else
2791 coro_semaphore_adjust (aTHX_ av, 0);
2792
2793 return 0;
2794 }
2795 else
2796 {
2797 int i;
2798 /* if we were woken up but can't down, we look through the whole */
2799 /* waiters list and only add us if we aren't in there already */
2800 /* this avoids some degenerate memory usage cases */
2801
2802 for (i = 1; i <= AvFILLp (av); ++i)
2803 if (AvARRAY (av)[i] == SvRV (coro_current))
2804 return 1;
2805
2806 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2807 return 1;
2808 }
2809}
2810
2811static int
2812slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2813{
2814 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2815}
2816
2817static int
2818slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2819{
2820 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2821}
2822
2823static void
2824slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2825{
2826 AV *av = (AV *)SvRV (arg [0]);
2827
2828 if (SvIVX (AvARRAY (av)[0]) > 0)
2829 {
2830 frame->data = (void *)av;
2831 frame->prepare = prepare_nop;
2832 }
2833 else
2834 {
2835 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2836
2837 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2838 frame->prepare = prepare_schedule;
2839
2840 /* to avoid race conditions when a woken-up coro gets terminated */
2841 /* we arrange for a temporary on_destroy that calls adjust (0) */
2842 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2843 }
2844}
2845
2846static void
2847slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2848{
2849 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2850 frame->check = slf_check_semaphore_down;
2851}
2852
2853static void
2854slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2855{
2856 if (items >= 2)
2857 {
2858 /* callback form */
2859 AV *av = (AV *)SvRV (arg [0]);
2860 SV *cb_cv = s_get_cv_croak (arg [1]);
2861
2862 av_push (av, SvREFCNT_inc_NN (cb_cv));
2863
2864 if (SvIVX (AvARRAY (av)[0]) > 0)
2865 coro_semaphore_adjust (aTHX_ av, 0);
2866
2867 frame->prepare = prepare_nop;
2868 frame->check = slf_check_nop;
2869 }
2870 else
2871 {
2872 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2873 frame->check = slf_check_semaphore_wait;
2874 }
2875}
2876
2877/* signal */
2878
2879static void
2880coro_signal_wake (pTHX_ AV *av, int count)
2881{
2882 SvIVX (AvARRAY (av)[0]) = 0;
2883
2884 /* now signal count waiters */
2885 while (count > 0 && AvFILLp (av) > 0)
2886 {
2887 SV *cb;
2888
2889 /* swap first two elements so we can shift a waiter */
2890 cb = AvARRAY (av)[0];
2891 AvARRAY (av)[0] = AvARRAY (av)[1];
2892 AvARRAY (av)[1] = cb;
2893
2894 cb = av_shift (av);
2895
2896 if (SvTYPE (cb) == SVt_PVCV)
2897 {
2898 dSP;
2899 PUSHMARK (SP);
2900 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2901 PUTBACK;
2902 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2903 }
2904 else
2905 {
2906 api_ready (aTHX_ cb);
2907 sv_setiv (cb, 0); /* signal waiter */
2908 }
2909
2910 SvREFCNT_dec (cb);
2911
2912 --count;
2913 }
2914}
2915
2916static int
2917slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2918{
2919 /* if we are about to throw, also stop waiting */
2920 return SvROK ((SV *)frame->data) && !CORO_THROW;
2921}
2922
2923static void
2924slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2925{
2926 AV *av = (AV *)SvRV (arg [0]);
2927
2928 if (items >= 2)
2929 {
2930 SV *cb_cv = s_get_cv_croak (arg [1]);
2931 av_push (av, SvREFCNT_inc_NN (cb_cv));
2932
2933 if (SvIVX (AvARRAY (av)[0]))
2934 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2935
2936 frame->prepare = prepare_nop;
2937 frame->check = slf_check_nop;
2938 }
2939 else if (SvIVX (AvARRAY (av)[0]))
2940 {
2941 SvIVX (AvARRAY (av)[0]) = 0;
2942 frame->prepare = prepare_nop;
2943 frame->check = slf_check_nop;
2944 }
2945 else
2946 {
2947 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2948
2949 av_push (av, waiter);
2950
2951 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2952 frame->prepare = prepare_schedule;
2953 frame->check = slf_check_signal_wait;
2954 }
2955}
2956
2957/*****************************************************************************/
2958/* Coro::AIO */
2959
2960#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2961
2962/* helper storage struct */
2963struct io_state
2964{
2965 int errorno;
2966 I32 laststype; /* U16 in 5.10.0 */
2967 int laststatval;
2968 Stat_t statcache;
2969};
2970
2971static void
2972coro_aio_callback (pTHX_ CV *cv)
2973{
2974 dXSARGS;
2975 AV *state = (AV *)S_GENSUB_ARG;
2976 SV *coro = av_pop (state);
2977 SV *data_sv = newSV (sizeof (struct io_state));
2978
2979 av_extend (state, items - 1);
2980
2981 sv_upgrade (data_sv, SVt_PV);
2982 SvCUR_set (data_sv, sizeof (struct io_state));
2983 SvPOK_only (data_sv);
2984
2985 {
2986 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2987
2988 data->errorno = errno;
2989 data->laststype = PL_laststype;
2990 data->laststatval = PL_laststatval;
2991 data->statcache = PL_statcache;
2992 }
2993
2994 /* now build the result vector out of all the parameters and the data_sv */
2995 {
2996 int i;
2997
2998 for (i = 0; i < items; ++i)
2999 av_push (state, SvREFCNT_inc_NN (ST (i)));
3000 }
3001
3002 av_push (state, data_sv);
3003
3004 api_ready (aTHX_ coro);
3005 SvREFCNT_dec (coro);
3006 SvREFCNT_dec ((AV *)state);
3007}
3008
3009static int
3010slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3011{
3012 AV *state = (AV *)frame->data;
3013
3014 /* if we are about to throw, return early */
3015 /* this does not cancel the aio request, but at least */
3016 /* it quickly returns */
3017 if (CORO_THROW)
3018 return 0;
3019
3020 /* one element that is an RV? repeat! */
3021 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3022 return 1;
3023
3024 /* restore status */
3025 {
3026 SV *data_sv = av_pop (state);
3027 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3028
3029 errno = data->errorno;
3030 PL_laststype = data->laststype;
3031 PL_laststatval = data->laststatval;
3032 PL_statcache = data->statcache;
3033
3034 SvREFCNT_dec (data_sv);
3035 }
3036
3037 /* push result values */
1958 { 3038 {
1959 dSP; 3039 dSP;
1960 SV **bot = PL_stack_base + checkmark; 3040 int i;
1961 int gimme = GIMME_V;
1962 3041
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 3042 EXTEND (SP, AvFILLp (state) + 1);
1964 3043 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 3044 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 3045
1974 PUTBACK; 3046 PUTBACK;
1975 } 3047 }
1976 3048
1977 return NORMAL; 3049 return 0;
1978} 3050}
1979 3051
1980static void 3052static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 3053slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 3054{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 3055 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 3056 SV *coro_hv = SvRV (coro_current);
3057 struct coro *coro = SvSTATE_hv (coro_hv);
1985 3058
1986 if (items > 2) 3059 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 3060 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 3061
1989 CvFLAGS (cv) |= CVf_SLF; 3062 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 3063 if (coro->prio)
1991 slf_cv = cv; 3064 {
3065 dSP;
1992 3066
1993 /* we patch the op, and then re-run the whole call */ 3067 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 3068 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 3069
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 3070 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 3071 {
3072 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3073 prio_sv = newSViv (0);
3074 }
2003 3075
2004 PL_op->op_ppaddr = pp_slf; 3076 PUSHMARK (SP);
3077 sv_setiv (prio_sv, coro->prio);
3078 XPUSHs (prio_sv);
2005 3079
2006 PL_op = (OP *)&slf_restore; 3080 PUTBACK;
3081 call_sv (prio_cv, G_VOID | G_DISCARD);
3082 }
3083
3084 /* now call the original request */
3085 {
3086 dSP;
3087 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3088 int i;
3089
3090 PUSHMARK (SP);
3091
3092 /* first push all args to the stack */
3093 EXTEND (SP, items + 1);
3094
3095 for (i = 0; i < items; ++i)
3096 PUSHs (arg [i]);
3097
3098 /* now push the callback closure */
3099 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3100
3101 /* now call the AIO function - we assume our request is uncancelable */
3102 PUTBACK;
3103 call_sv ((SV *)req, G_VOID | G_DISCARD);
3104 }
3105
3106 /* now that the request is going, we loop till we have a result */
3107 frame->data = (void *)state;
3108 frame->prepare = prepare_schedule;
3109 frame->check = slf_check_aio_req;
3110}
3111
3112static void
3113coro_aio_req_xs (pTHX_ CV *cv)
3114{
3115 dXSARGS;
3116
3117 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3118
3119 XSRETURN_EMPTY;
3120}
3121
3122/*****************************************************************************/
3123
3124#if CORO_CLONE
3125# include "clone.c"
3126#endif
3127
3128/*****************************************************************************/
3129
3130static SV *
3131coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3132{
3133 SV *coro_sv;
3134 struct coro *coro;
3135 MAGIC *mg;
3136 HV *hv;
3137 SV *cb;
3138 int i;
3139
3140 if (argc > 0)
3141 {
3142 cb = s_get_cv_croak (argv [0]);
3143
3144 if (!is_coro)
3145 {
3146 if (CvISXSUB (cb))
3147 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3148
3149 if (!CvROOT (cb))
3150 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3151 }
3152 }
3153
3154 Newz (0, coro, 1, struct coro);
3155 coro->args = newAV ();
3156 coro->flags = CF_NEW;
3157
3158 if (coro_first) coro_first->prev = coro;
3159 coro->next = coro_first;
3160 coro_first = coro;
3161
3162 coro->hv = hv = newHV ();
3163 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3164 mg->mg_flags |= MGf_DUP;
3165 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3166
3167 if (argc > 0)
3168 {
3169 av_extend (coro->args, argc + is_coro - 1);
3170
3171 if (is_coro)
3172 {
3173 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3174 cb = (SV *)cv_coro_run;
3175 }
3176
3177 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3178
3179 for (i = 1; i < argc; i++)
3180 av_push (coro->args, newSVsv (argv [i]));
3181 }
3182
3183 return coro_sv;
2007} 3184}
2008 3185
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3186MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 3187
2011PROTOTYPES: DISABLE 3188PROTOTYPES: DISABLE
2012 3189
2013BOOT: 3190BOOT:
2014{ 3191{
2015#ifdef USE_ITHREADS 3192#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 3193# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 3194 coro_thx = PERL_GET_CONTEXT;
2019# endif 3195# endif
2020#endif 3196#endif
2021 BOOT_PAGESIZE; 3197 BOOT_PAGESIZE;
2022 3198
3199 cctx_current = cctx_new_empty ();
3200
2023 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3201 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2024 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3202 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2025 3203
2026 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3204 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2027 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3205 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2042 main_top_env = PL_top_env; 3220 main_top_env = PL_top_env;
2043 3221
2044 while (main_top_env->je_prev) 3222 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 3223 main_top_env = main_top_env->je_prev;
2046 3224
3225 {
3226 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3227
3228 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3229 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3230
3231 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3232 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3233 }
3234
2047 coroapi.ver = CORO_API_VERSION; 3235 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 3236 coroapi.rev = CORO_API_REVISION;
3237
2049 coroapi.transfer = api_transfer; 3238 coroapi.transfer = api_transfer;
3239
3240 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 3241 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 3242 coroapi.prepare_nop = prepare_nop;
3243 coroapi.prepare_schedule = prepare_schedule;
3244 coroapi.prepare_cede = prepare_cede;
3245 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 3246
2053 { 3247 time_init (aTHX);
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 3248
2056 if (!svp) croak ("Time::HiRes is required");
2057 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2058
2059 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2060 }
2061
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3249 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2063} 3250}
2064 3251
2065SV * 3252SV *
2066new (char *klass, ...) 3253new (SV *klass, ...)
3254 ALIAS:
3255 Coro::new = 1
2067 CODE: 3256 CODE:
2068{ 3257 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2069 struct coro *coro; 3258 OUTPUT:
2070 MAGIC *mg;
2071 HV *hv;
2072 int i;
2073
2074 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV ();
2076 coro->flags = CF_NEW;
2077
2078 if (coro_first) coro_first->prev = coro;
2079 coro->next = coro_first;
2080 coro_first = coro;
2081
2082 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086
2087 av_extend (coro->args, items - 1);
2088 for (i = 1; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i)));
2090}
2091 OUTPUT:
2092 RETVAL 3259 RETVAL
2093
2094void
2095_set_stacklevel (...)
2096 CODE:
2097{
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101 3260
2102void 3261void
2103transfer (...) 3262transfer (...)
3263 PROTOTYPE: $$
2104 CODE: 3264 CODE:
2105{ 3265 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109
2110bool
2111_destroy (SV *coro_sv)
2112 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2114 OUTPUT:
2115 RETVAL
2116 3266
2117void 3267void
2118_exit (int code) 3268_exit (int code)
2119 PROTOTYPE: $ 3269 PROTOTYPE: $
2120 CODE: 3270 CODE:
2121 _exit (code); 3271 _exit (code);
2122 3272
3273SV *
3274clone (Coro::State coro)
3275 CODE:
3276{
3277#if CORO_CLONE
3278 struct coro *ncoro = coro_clone (aTHX_ coro);
3279 MAGIC *mg;
3280 /* TODO: too much duplication */
3281 ncoro->hv = newHV ();
3282 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3283 mg->mg_flags |= MGf_DUP;
3284 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3285#else
3286 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3287#endif
3288}
3289 OUTPUT:
3290 RETVAL
3291
2123int 3292int
2124cctx_stacksize (int new_stacksize = 0) 3293cctx_stacksize (int new_stacksize = 0)
3294 PROTOTYPE: ;$
2125 CODE: 3295 CODE:
2126 RETVAL = cctx_stacksize; 3296 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 3297 if (new_stacksize)
2128 { 3298 {
2129 cctx_stacksize = new_stacksize; 3299 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 3302 OUTPUT:
2133 RETVAL 3303 RETVAL
2134 3304
2135int 3305int
2136cctx_max_idle (int max_idle = 0) 3306cctx_max_idle (int max_idle = 0)
3307 PROTOTYPE: ;$
2137 CODE: 3308 CODE:
2138 RETVAL = cctx_max_idle; 3309 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 3310 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 3311 cctx_max_idle = max_idle;
2141 OUTPUT: 3312 OUTPUT:
2142 RETVAL 3313 RETVAL
2143 3314
2144int 3315int
2145cctx_count () 3316cctx_count ()
3317 PROTOTYPE:
2146 CODE: 3318 CODE:
2147 RETVAL = cctx_count; 3319 RETVAL = cctx_count;
2148 OUTPUT: 3320 OUTPUT:
2149 RETVAL 3321 RETVAL
2150 3322
2151int 3323int
2152cctx_idle () 3324cctx_idle ()
3325 PROTOTYPE:
2153 CODE: 3326 CODE:
2154 RETVAL = cctx_idle; 3327 RETVAL = cctx_idle;
2155 OUTPUT: 3328 OUTPUT:
2156 RETVAL 3329 RETVAL
2157 3330
2158void 3331void
2159list () 3332list ()
3333 PROTOTYPE:
2160 PPCODE: 3334 PPCODE:
2161{ 3335{
2162 struct coro *coro; 3336 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 3337 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 3338 if (coro->hv)
… …
2171 eval = 1 3345 eval = 1
2172 CODE: 3346 CODE:
2173{ 3347{
2174 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3348 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2175 { 3349 {
2176 struct coro temp; 3350 struct coro *current = SvSTATE_current;
3351 struct CoroSLF slf_save;
2177 3352
2178 if (!(coro->flags & CF_RUNNING)) 3353 if (current != coro)
2179 { 3354 {
2180 PUTBACK; 3355 PUTBACK;
2181 save_perl (aTHX_ &temp); 3356 save_perl (aTHX_ current);
2182 load_perl (aTHX_ coro); 3357 load_perl (aTHX_ coro);
3358 /* the coro is most likely in an active SLF call.
3359 * while not strictly required (the code we execute is
3360 * not allowed to call any SLF functions), it's cleaner
3361 * to reinitialise the slf_frame and restore it later.
3362 * This might one day allow us to actually do SLF calls
3363 * from code executed here.
3364 */
3365 slf_save = slf_frame;
3366 slf_frame.prepare = 0;
3367 SPAGAIN;
2183 } 3368 }
2184 3369
2185 {
2186 dSP;
2187 ENTER;
2188 SAVETMPS;
2189 PUTBACK;
2190 PUSHSTACK; 3370 PUSHSTACK;
3371
2191 PUSHMARK (SP); 3372 PUSHMARK (SP);
3373 PUTBACK;
2192 3374
2193 if (ix) 3375 if (ix)
2194 eval_sv (coderef, 0); 3376 eval_sv (coderef, 0);
2195 else 3377 else
2196 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3378 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2197 3379
2198 POPSTACK; 3380 POPSTACK;
2199 SPAGAIN; 3381 SPAGAIN;
2200 FREETMPS;
2201 LEAVE;
2202 PUTBACK;
2203 }
2204 3382
2205 if (!(coro->flags & CF_RUNNING)) 3383 if (current != coro)
2206 { 3384 {
3385 PUTBACK;
3386 slf_frame = slf_save;
2207 save_perl (aTHX_ coro); 3387 save_perl (aTHX_ coro);
2208 load_perl (aTHX_ &temp); 3388 load_perl (aTHX_ current);
2209 SPAGAIN; 3389 SPAGAIN;
2210 } 3390 }
2211 } 3391 }
2212} 3392}
2213 3393
… …
2217 ALIAS: 3397 ALIAS:
2218 is_ready = CF_READY 3398 is_ready = CF_READY
2219 is_running = CF_RUNNING 3399 is_running = CF_RUNNING
2220 is_new = CF_NEW 3400 is_new = CF_NEW
2221 is_destroyed = CF_DESTROYED 3401 is_destroyed = CF_DESTROYED
3402 is_suspended = CF_SUSPENDED
2222 CODE: 3403 CODE:
2223 RETVAL = boolSV (coro->flags & ix); 3404 RETVAL = boolSV (coro->flags & ix);
2224 OUTPUT: 3405 OUTPUT:
2225 RETVAL 3406 RETVAL
2226 3407
2227void 3408void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3409throw (Coro::State self, SV *exception = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3410 PROTOTYPE: $;$
2230 CODE: 3411 CODE:
3412{
3413 struct coro *current = SvSTATE_current;
3414 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3415 SvREFCNT_dec (*exceptionp);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3416 SvGETMAGIC (exception);
3417 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3418}
2233 3419
2234void 3420void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3421api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3422 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3423 C_ARGS: aTHX_ coro, flags
2237 3424
2238SV * 3425SV *
2239has_cctx (Coro::State coro) 3426has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3427 PROTOTYPE: $
2241 CODE: 3428 CODE:
2242 RETVAL = boolSV (!!coro->cctx); 3429 /* maybe manage the running flag differently */
3430 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2243 OUTPUT: 3431 OUTPUT:
2244 RETVAL 3432 RETVAL
2245 3433
2246int 3434int
2247is_traced (Coro::State coro) 3435is_traced (Coro::State coro)
… …
2265 OUTPUT: 3453 OUTPUT:
2266 RETVAL 3454 RETVAL
2267 3455
2268void 3456void
2269force_cctx () 3457force_cctx ()
3458 PROTOTYPE:
2270 CODE: 3459 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3460 cctx_current->idle_sp = 0;
2273 3461
2274void 3462void
2275swap_defsv (Coro::State self) 3463swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3464 PROTOTYPE: $
2277 ALIAS: 3465 ALIAS:
2278 swap_defav = 1 3466 swap_defav = 1
2279 CODE: 3467 CODE:
2280 if (!self->slot) 3468 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3469 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3470 else
2283 { 3471 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3472 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3473 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3474
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3475 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3476 }
2289 3477
3478void
3479cancel (Coro::State self)
3480 CODE:
3481 coro_state_destroy (aTHX_ self);
3482
3483SV *
3484enable_times (int enabled = enable_times)
3485 CODE:
3486{
3487 RETVAL = boolSV (enable_times);
3488
3489 if (enabled != enable_times)
3490 {
3491 enable_times = enabled;
3492
3493 coro_times_update ();
3494 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3495 }
3496}
3497 OUTPUT:
3498 RETVAL
3499
3500void
3501times (Coro::State self)
3502 PPCODE:
3503{
3504 struct coro *current = SvSTATE (coro_current);
3505
3506 if (expect_false (current == self))
3507 {
3508 coro_times_update ();
3509 coro_times_add (SvSTATE (coro_current));
3510 }
3511
3512 EXTEND (SP, 2);
3513 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3514 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3515
3516 if (expect_false (current == self))
3517 coro_times_sub (SvSTATE (coro_current));
3518}
3519
3520void
3521swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3522 CODE:
3523{
3524 struct coro *current = SvSTATE_current;
3525
3526 if (current == coro)
3527 SWAP_SVS (current);
3528
3529 if (!coro->swap_sv)
3530 coro->swap_sv = newAV ();
3531
3532 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3533 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3534
3535 if (current == coro)
3536 SWAP_SVS (current);
3537}
3538
3539
2290MODULE = Coro::State PACKAGE = Coro 3540MODULE = Coro::State PACKAGE = Coro
2291 3541
2292BOOT: 3542BOOT:
2293{ 3543{
2294 int i;
2295
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3544 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3545 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3546 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3547 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3548 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3549 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3550 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3551 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3552 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2302 3553
3554 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3555 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3556 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3557 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3558
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3559 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3560
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3561 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3562 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2307 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3563 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2308 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3564 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2309 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3565 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2310 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3566 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2311
2312 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2313 coro_ready[i] = newAV ();
2314 3567
2315 { 3568 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3569 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3570
2318 coroapi.schedule = api_schedule; 3571 coroapi.schedule = api_schedule;
3572 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3573 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3574 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3575 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3576 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3577 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3578 coroapi.current = coro_current;
2325 3579
2326 GCoroAPI = &coroapi; 3580 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3581 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3582 SvREADONLY_on (sv);
2329 } 3583 }
2330} 3584}
2331 3585
3586SV *
3587async (...)
3588 PROTOTYPE: &@
3589 CODE:
3590 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3591 api_ready (aTHX_ RETVAL);
3592 OUTPUT:
3593 RETVAL
3594
3595void
3596_destroy (Coro::State coro)
3597 CODE:
3598 /* used by the manager thread */
3599 coro_state_destroy (aTHX_ coro);
3600 coro_call_on_destroy (aTHX_ coro);
3601
3602void
3603terminate (...)
3604 CODE:
3605 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3606
3607void
3608cancel (...)
3609 CODE:
3610 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3611
2332void 3612void
2333schedule (...) 3613schedule (...)
2334 CODE: 3614 CODE:
2335{ 3615 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3616
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3617void
2338} 3618schedule_to (...)
3619 CODE:
3620 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3621
3622void
3623cede_to (...)
3624 CODE:
3625 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3626
2340void 3627void
2341cede (...) 3628cede (...)
2342 CODE: 3629 CODE:
2343{ 3630 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3631
2348void 3632void
2349cede_notself (...) 3633cede_notself (...)
2350 CODE: 3634 CODE:
2351{ 3635 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354}
2355 3636
2356void 3637void
2357_set_current (SV *current) 3638_set_current (SV *current)
2358 PROTOTYPE: $ 3639 PROTOTYPE: $
2359 CODE: 3640 CODE:
… …
2362 3643
2363void 3644void
2364_set_readyhook (SV *hook) 3645_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3646 PROTOTYPE: $
2366 CODE: 3647 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3648 SvREFCNT_dec (coro_readyhook);
3649 SvGETMAGIC (hook);
3650 if (SvOK (hook))
3651 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3652 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3653 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3654 }
3655 else
3656 {
3657 coro_readyhook = 0;
3658 CORO_READYHOOK = 0;
3659 }
2371 3660
2372int 3661int
2373prio (Coro::State coro, int newprio = 0) 3662prio (Coro::State coro, int newprio = 0)
3663 PROTOTYPE: $;$
2374 ALIAS: 3664 ALIAS:
2375 nice = 1 3665 nice = 1
2376 CODE: 3666 CODE:
2377{ 3667{
2378 RETVAL = coro->prio; 3668 RETVAL = coro->prio;
… …
2380 if (items > 1) 3670 if (items > 1)
2381 { 3671 {
2382 if (ix) 3672 if (ix)
2383 newprio = coro->prio - newprio; 3673 newprio = coro->prio - newprio;
2384 3674
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3675 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3676 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3677
2388 coro->prio = newprio; 3678 coro->prio = newprio;
2389 } 3679 }
2390} 3680}
2391 OUTPUT: 3681 OUTPUT:
… …
2405 CODE: 3695 CODE:
2406 RETVAL = coro_nready; 3696 RETVAL = coro_nready;
2407 OUTPUT: 3697 OUTPUT:
2408 RETVAL 3698 RETVAL
2409 3699
2410# for async_pool speedup
2411void 3700void
2412_pool_1 (SV *cb) 3701suspend (Coro::State self)
3702 PROTOTYPE: $
2413 CODE: 3703 CODE:
2414{ 3704 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3705
2422 if (!invoke) 3706void
3707resume (Coro::State self)
3708 PROTOTYPE: $
3709 CODE:
3710 self->flags &= ~CF_SUSPENDED;
3711
3712void
3713_pool_handler (...)
3714 CODE:
3715 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3716
3717void
3718async_pool (SV *cv, ...)
3719 PROTOTYPE: &@
3720 PPCODE:
3721{
3722 HV *hv = (HV *)av_pop (av_async_pool);
3723 AV *av = newAV ();
3724 SV *cb = ST (0);
3725 int i;
3726
3727 av_extend (av, items - 2);
3728 for (i = 1; i < items; ++i)
3729 av_push (av, SvREFCNT_inc_NN (ST (i)));
3730
3731 if ((SV *)hv == &PL_sv_undef)
2423 { 3732 {
2424 SV *old = PL_diehook; 3733 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2425 PL_diehook = 0; 3734 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2426 SvREFCNT_dec (old); 3735 SvREFCNT_dec (sv);
2427 croak ("\3async_pool terminate\2\n");
2428 } 3736 }
2429 3737
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3738 {
2443 av_fill (defav, len - 1); 3739 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3740
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3741 assert (!coro->invoke_cb);
3742 assert (!coro->invoke_av);
3743 coro->invoke_cb = SvREFCNT_inc (cb);
3744 coro->invoke_av = av;
2446 } 3745 }
2447 3746
3747 api_ready (aTHX_ (SV *)hv);
3748
3749 if (GIMME_V != G_VOID)
3750 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3751 else
2448 SvREFCNT_dec (invoke); 3752 SvREFCNT_dec (hv);
2449} 3753}
2450 3754
2451void 3755SV *
2452_pool_2 (SV *cb) 3756rouse_cb ()
3757 PROTOTYPE:
2453 CODE: 3758 CODE:
2454{ 3759 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3760 OUTPUT:
2527 RETVAL 3761 RETVAL
2528 3762
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3763void
2535_get_state (SV *self) 3764rouse_wait (...)
3765 PROTOTYPE: ;$
2536 PPCODE: 3766 PPCODE:
2537{ 3767 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3768
2563void 3769void
2564_set_state (SV *state) 3770on_enter (SV *block)
3771 ALIAS:
3772 on_leave = 1
2565 PROTOTYPE: $ 3773 PROTOTYPE: &
3774 CODE:
3775{
3776 struct coro *coro = SvSTATE_current;
3777 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3778
3779 block = s_get_cv_croak (block);
3780
3781 if (!*avp)
3782 *avp = newAV ();
3783
3784 av_push (*avp, SvREFCNT_inc (block));
3785
3786 if (!ix)
3787 on_enterleave_call (aTHX_ block);
3788
3789 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3790 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3791 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3792}
3793
3794
3795MODULE = Coro::State PACKAGE = PerlIO::cede
3796
3797BOOT:
3798 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3799
3800
3801MODULE = Coro::State PACKAGE = Coro::Semaphore
3802
3803SV *
3804new (SV *klass, SV *count = 0)
3805 CODE:
3806{
3807 int semcnt = 1;
3808
3809 if (count)
3810 {
3811 SvGETMAGIC (count);
3812
3813 if (SvOK (count))
3814 semcnt = SvIV (count);
3815 }
3816
3817 RETVAL = sv_bless (
3818 coro_waitarray_new (aTHX_ semcnt),
3819 GvSTASH (CvGV (cv))
3820 );
3821}
3822 OUTPUT:
3823 RETVAL
3824
3825# helper for Coro::Channel and others
3826SV *
3827_alloc (int count)
3828 CODE:
3829 RETVAL = coro_waitarray_new (aTHX_ count);
3830 OUTPUT:
3831 RETVAL
3832
3833SV *
3834count (SV *self)
3835 CODE:
3836 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3837 OUTPUT:
3838 RETVAL
3839
3840void
3841up (SV *self, int adjust = 1)
3842 ALIAS:
3843 adjust = 1
3844 CODE:
3845 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3846
3847void
3848down (...)
3849 CODE:
3850 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3851
3852void
3853wait (...)
3854 CODE:
3855 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3856
3857void
3858try (SV *self)
3859 PPCODE:
3860{
3861 AV *av = (AV *)SvRV (self);
3862 SV *count_sv = AvARRAY (av)[0];
3863 IV count = SvIVX (count_sv);
3864
3865 if (count > 0)
3866 {
3867 --count;
3868 SvIVX (count_sv) = count;
3869 XSRETURN_YES;
3870 }
3871 else
3872 XSRETURN_NO;
3873}
3874
3875void
3876waiters (SV *self)
3877 PPCODE:
3878{
3879 AV *av = (AV *)SvRV (self);
3880 int wcount = AvFILLp (av) + 1 - 1;
3881
3882 if (GIMME_V == G_SCALAR)
3883 XPUSHs (sv_2mortal (newSViv (wcount)));
3884 else
3885 {
3886 int i;
3887 EXTEND (SP, wcount);
3888 for (i = 1; i <= wcount; ++i)
3889 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3890 }
3891}
3892
3893MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3894
3895void
3896_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3897 PPCODE:
2567{ 3898{
2568 AV *av = (AV *)SvRV (state); 3899 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3900
2572 errno = data->errorno; 3901 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3902 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3903 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3904 XSRETURN_YES;
2576 3905
3906 XSRETURN_NO;
3907}
3908
3909MODULE = Coro::State PACKAGE = Coro::Signal
3910
3911SV *
3912new (SV *klass)
3913 CODE:
3914 RETVAL = sv_bless (
3915 coro_waitarray_new (aTHX_ 0),
3916 GvSTASH (CvGV (cv))
3917 );
3918 OUTPUT:
3919 RETVAL
3920
3921void
3922wait (...)
3923 CODE:
3924 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3925
3926void
3927broadcast (SV *self)
3928 CODE:
3929{
3930 AV *av = (AV *)SvRV (self);
3931 coro_signal_wake (aTHX_ av, AvFILLp (av));
3932}
3933
3934void
3935send (SV *self)
3936 CODE:
3937{
3938 AV *av = (AV *)SvRV (self);
3939
2577 EXTEND (SP, AvFILLp (av)); 3940 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3941 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3942 else
3943 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3944}
3945
3946IV
3947awaited (SV *self)
3948 CODE:
3949 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3950 OUTPUT:
3951 RETVAL
2581 3952
2582 3953
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3954MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3955
2585BOOT: 3956BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3957 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3958
2588SV * 3959void
2589_schedule (...) 3960_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3961 CODE:
2592{ 3962{
2593 static int incede; 3963 static int incede;
2594 3964
2595 api_cede_notself (aTHX); 3965 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3971 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3972 if (coro_nready >= incede)
2603 { 3973 {
2604 PUSHMARK (SP); 3974 PUSHMARK (SP);
2605 PUTBACK; 3975 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3976 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3977 }
2609 3978
2610 --incede; 3979 --incede;
2611} 3980}
2612 3981
2613 3982
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3983MODULE = Coro::State PACKAGE = Coro::AIO
2615 3984
2616BOOT: 3985void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3986_register (char *target, char *proto, SV *req)
3987 CODE:
3988{
3989 SV *req_cv = s_get_cv_croak (req);
3990 /* newXSproto doesn't return the CV on 5.8 */
3991 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3992 sv_setpv ((SV *)slf_cv, proto);
3993 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3994}
2618 3995
3996MODULE = Coro::State PACKAGE = Coro::Select
3997
3998void
3999patch_pp_sselect ()
4000 CODE:
4001 if (!coro_old_pp_sselect)
4002 {
4003 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4004 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4005 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4006 }
4007
4008void
4009unpatch_pp_sselect ()
4010 CODE:
4011 if (coro_old_pp_sselect)
4012 {
4013 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4014 coro_old_pp_sselect = 0;
4015 }
4016

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