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Comparing Coro/Coro/State.xs (file contents):
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC vs.
Revision 1.398 by root, Sat May 7 14:11:10 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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
111#endif 68#endif
112 69
113#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
120#endif 77#endif
121 78
122/* 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
123 * portable way as possible. */ 80 * portable way as possible. */
124#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
126#else 84#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
128#endif 87#endif
129 88
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
131 90
132#if __GNUC__ >= 3 91#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 94# define INLINE static inline
136#else 95#else
137# define attribute(x) 96# define attribute(x)
138# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
139# define INLINE static 98# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
144 103
145#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
146 105
147#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
148 108
149#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
150# if CORO_PTHREAD 110# if CORO_PTHREAD
151static void *coro_thx; 111static void *coro_thx;
152# endif 112# endif
153#endif 113#endif
154 114
115#ifdef __linux
116# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime
119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
120# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif
123#endif
124
155static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
127
128/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX);
131static void slf_destroy (pTHX_ struct coro *coro);
156 132
157static U32 cctx_gen; 133static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 137static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
165static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 147static SV *rv_diehook;
168static SV *rv_warnhook; 148static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
170 150
171/* async_pool helper stuff */ 151/* async_pool helper stuff */
172static SV *sv_pool_rss; 152static SV *sv_pool_rss;
173static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
175 158
176/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
177static SV *sv_activity; 160static SV *sv_activity;
161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
178 167
179static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
181 170
182enum { 171enum {
… …
208 int valgrind_id; 197 int valgrind_id;
209#endif 198#endif
210 unsigned char flags; 199 unsigned char flags;
211} coro_cctx; 200} coro_cctx;
212 201
202static coro_cctx *cctx_current; /* the currently running cctx */
203
204/*****************************************************************************/
205
213enum { 206enum {
214 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
218}; 213};
219 214
220/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
221typedef struct 216typedef struct
222{ 217{
223 SV *defsv; 218 SV *defsv;
224 AV *defav; 219 AV *defav;
225 SV *errsv; 220 SV *errsv;
226 SV *irsgv; 221 SV *irsgv;
222 HV *hinthv;
227#define VAR(name,type) type name; 223#define VAR(name,type) type name;
228# include "state.h" 224# include "state.h"
229#undef VAR 225#undef VAR
230} perl_slots; 226} perl_slots;
231 227
228// how many context stack entries do we need for perl_slots
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233 230
234/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
235struct coro { 232struct coro {
236 /* the C coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 234 coro_cctx *cctx;
238 235
236 /* ready queue */
237 struct coro *next_ready;
238
239 /* state data */ 239 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 240 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 241 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
243 243
244 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 245 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */ 246 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 249
250 /* statistics */ 250 /* statistics */
251 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
252 252
253 /* coro process data */ 253 /* coro process data */
254 int prio; 254 int prio;
255 SV *throw; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
256 SV *rouse_cb;
256 257
257 /* async_pool */ 258 /* async_pool */
258 SV *saved_deffh; 259 SV *saved_deffh;
260 SV *invoke_cb;
261 AV *invoke_av;
262
263 /* on_enter/on_leave */
264 AV *on_enter;
265 AV *on_leave;
266
267 /* swap_sv */
268 AV *swap_sv;
269
270 /* times */
271 coro_ts t_cpu, t_real;
259 272
260 /* linked list */ 273 /* linked list */
261 struct coro *next, *prev; 274 struct coro *next, *prev;
262}; 275};
263 276
264typedef struct coro *Coro__State; 277typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 278typedef struct coro *Coro__State_or_hashref;
266 279
267/* the following variables are effectively part of the perl context */ 280/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 281/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 282/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 283static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 284
273/** Coro ********************************************************************/ 285/** Coro ********************************************************************/
274 286
275#define PRIO_MAX 3 287#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 288#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 289#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 290#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 291#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 292#define CORO_PRIO_MIN -4
281 293
282/* for Coro.pm */ 294/* for Coro.pm */
283static SV *coro_current; 295static SV *coro_current;
284static SV *coro_readyhook; 296static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 297static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
298static CV *cv_coro_run;
286static struct coro *coro_first; 299static struct coro *coro_first;
287#define coro_nready coroapi.nready 300#define coro_nready coroapi.nready
301
302/** Coro::Select ************************************************************/
303
304static OP *(*coro_old_pp_sselect) (pTHX);
305static SV *coro_select_select;
306
307/* horrible hack, but if it works... */
308static OP *
309coro_pp_sselect (pTHX)
310{
311 dSP;
312 PUSHMARK (SP - 4); /* fake argument list */
313 XPUSHs (coro_select_select);
314 PUTBACK;
315
316 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
317 PL_op->op_flags |= OPf_STACKED;
318 PL_op->op_private = 0;
319 return PL_ppaddr [OP_ENTERSUB](aTHX);
320}
321
322/** time stuff **************************************************************/
323
324#ifdef HAS_GETTIMEOFDAY
325
326static void
327coro_u2time (pTHX_ UV ret[2])
328{
329 struct timeval tv;
330 gettimeofday (&tv, 0);
331
332 ret [0] = tv.tv_sec;
333 ret [1] = tv.tv_usec;
334}
335
336static double
337coro_nvtime ()
338{
339 struct timeval tv;
340 gettimeofday (&tv, 0);
341
342 return tv.tv_sec + tv.tv_usec * 1e-6;
343}
344
345static void
346time_init (pTHX)
347{
348 nvtime = coro_nvtime;
349 u2time = coro_u2time;
350}
351
352#else
353
354static void
355time_init (pTHX)
356{
357 SV **svp;
358
359 require_pv ("Time/HiRes.pm");
360
361 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
362
363 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
364 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
365
366 nvtime = INT2PTR (double (*)(), SvIV (*svp));
367
368 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
369 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
370}
371
372#endif
288 373
289/** lowlevel stuff **********************************************************/ 374/** lowlevel stuff **********************************************************/
290 375
291static SV * 376static SV *
292coro_get_sv (pTHX_ const char *name, int create) 377coro_get_sv (pTHX_ const char *name, int create)
… …
316 get_hv (name, create); 401 get_hv (name, create);
317#endif 402#endif
318 return get_hv (name, create); 403 return get_hv (name, create);
319} 404}
320 405
406INLINE void
407coro_times_update ()
408{
409#ifdef coro_clock_gettime
410 struct timespec ts;
411
412 ts.tv_sec = ts.tv_nsec = 0;
413 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
414 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
415
416 ts.tv_sec = ts.tv_nsec = 0;
417 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
418 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
419#else
420 dTHX;
421 UV tv[2];
422
423 u2time (aTHX_ tv);
424 time_real [0] = tv [0];
425 time_real [1] = tv [1] * 1000;
426#endif
427}
428
429INLINE void
430coro_times_add (struct coro *c)
431{
432 c->t_real [1] += time_real [1];
433 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
434 c->t_real [0] += time_real [0];
435
436 c->t_cpu [1] += time_cpu [1];
437 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
438 c->t_cpu [0] += time_cpu [0];
439}
440
441INLINE void
442coro_times_sub (struct coro *c)
443{
444 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
445 c->t_real [1] -= time_real [1];
446 c->t_real [0] -= time_real [0];
447
448 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
449 c->t_cpu [1] -= time_cpu [1];
450 c->t_cpu [0] -= time_cpu [0];
451}
452
453/*****************************************************************************/
454/* magic glue */
455
456#define CORO_MAGIC_type_cv 26
457#define CORO_MAGIC_type_state PERL_MAGIC_ext
458
459#define CORO_MAGIC_NN(sv, type) \
460 (expect_true (SvMAGIC (sv)->mg_type == type) \
461 ? SvMAGIC (sv) \
462 : mg_find (sv, type))
463
464#define CORO_MAGIC(sv, type) \
465 (expect_true (SvMAGIC (sv)) \
466 ? CORO_MAGIC_NN (sv, type) \
467 : 0)
468
469#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
470#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
471
472INLINE struct coro *
473SvSTATE_ (pTHX_ SV *coro)
474{
475 HV *stash;
476 MAGIC *mg;
477
478 if (SvROK (coro))
479 coro = SvRV (coro);
480
481 if (expect_false (SvTYPE (coro) != SVt_PVHV))
482 croak ("Coro::State object required");
483
484 stash = SvSTASH (coro);
485 if (expect_false (stash != coro_stash && stash != coro_state_stash))
486 {
487 /* very slow, but rare, check */
488 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
489 croak ("Coro::State object required");
490 }
491
492 mg = CORO_MAGIC_state (coro);
493 return (struct coro *)mg->mg_ptr;
494}
495
496#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
497
498/* faster than SvSTATE, but expects a coroutine hv */
499#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
500#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
501
502/*****************************************************************************/
503/* padlist management and caching */
504
321static AV * 505static AV *
322coro_clone_padlist (pTHX_ CV *cv) 506coro_derive_padlist (pTHX_ CV *cv)
323{ 507{
324 AV *padlist = CvPADLIST (cv); 508 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 509 AV *newpadlist, *newpad;
326 510
327 newpadlist = newAV (); 511 newpadlist = newAV ();
… …
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 516 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 517#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 518 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist); 519 --AvFILLp (padlist);
336 520
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 521 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
338 av_store (newpadlist, 1, (SV *)newpad); 522 av_store (newpadlist, 1, (SV *)newpad);
339 523
340 return newpadlist; 524 return newpadlist;
341} 525}
342 526
343static void 527static void
344free_padlist (pTHX_ AV *padlist) 528free_padlist (pTHX_ AV *padlist)
345{ 529{
346 /* may be during global destruction */ 530 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 531 if (!IN_DESTRUCT)
348 { 532 {
349 I32 i = AvFILLp (padlist); 533 I32 i = AvFILLp (padlist);
350 while (i >= 0) 534
535 while (i > 0) /* special-case index 0 */
351 { 536 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 537 /* we try to be extra-careful here */
353 if (svp) 538 AV *av = (AV *)AvARRAY (padlist)[i--];
354 { 539 I32 j = AvFILLp (av);
355 SV *sv; 540
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 541 while (j >= 0)
542 SvREFCNT_dec (AvARRAY (av)[j--]);
543
544 AvFILLp (av) = -1;
357 SvREFCNT_dec (sv); 545 SvREFCNT_dec (av);
358
359 SvREFCNT_dec (*svp);
360 }
361 } 546 }
362 547
548 SvREFCNT_dec (AvARRAY (padlist)[0]);
549
550 AvFILLp (padlist) = -1;
363 SvREFCNT_dec ((SV*)padlist); 551 SvREFCNT_dec ((SV*)padlist);
364 } 552 }
365} 553}
366 554
367static int 555static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 556coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 557{
370 AV *padlist; 558 AV *padlist;
371 AV *av = (AV *)mg->mg_obj; 559 AV *av = (AV *)mg->mg_obj;
560
561 /* perl manages to free our internal AV and _then_ call us */
562 if (IN_DESTRUCT)
563 return 0;
372 564
373 /* casting is fun. */ 565 /* casting is fun. */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 566 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
375 free_padlist (aTHX_ padlist); 567 free_padlist (aTHX_ padlist);
376 568
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 569 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 570
379 return 0; 571 return 0;
380} 572}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 573
385static MGVTBL coro_cv_vtbl = { 574static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 575 0, 0, 0, 0,
387 coro_cv_free 576 coro_cv_free
388}; 577};
389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432 578
433/* the next two functions merely cache the padlists */ 579/* the next two functions merely cache the padlists */
434static void 580static void
435get_padlist (pTHX_ CV *cv) 581get_padlist (pTHX_ CV *cv)
436{ 582{
… …
442 else 588 else
443 { 589 {
444#if CORO_PREFER_PERL_FUNCTIONS 590#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 591 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 592 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 593 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 594 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 595 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 596 SvREFCNT_dec (cp);
451#else 597#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 598 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 599#endif
454 } 600 }
455} 601}
456 602
457static void 603static void
… …
464 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 610 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
465 611
466 av = (AV *)mg->mg_obj; 612 av = (AV *)mg->mg_obj;
467 613
468 if (expect_false (AvFILLp (av) >= AvMAX (av))) 614 if (expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1); 615 av_extend (av, AvFILLp (av) + 1);
470 616
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 617 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 618}
473 619
474/** load & save, init *******************************************************/ 620/** load & save, init *******************************************************/
621
622/* swap sv heads, at least logically */
623static void
624swap_svs (pTHX_ Coro__State c)
625{
626 int i;
627
628 for (i = 0; i <= AvFILLp (c->swap_sv); )
629 {
630 SV *a = AvARRAY (c->swap_sv)[i++];
631 SV *b = AvARRAY (c->swap_sv)[i++];
632
633 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
634 SV tmp;
635
636 /* swap sv_any */
637 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
638
639 /* swap sv_flags */
640 SvFLAGS (&tmp) = SvFLAGS (a);
641 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
642 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
643
644#if PERL_VERSION_ATLEAST (5,10,0)
645 /* perl 5.10 complicates this _quite_ a bit, but it also is
646 * much faster, so no quarrels here. alternatively, we could
647 * sv_upgrade to avoid this.
648 */
649 {
650 /* swap sv_u */
651 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
652
653 /* if SvANY points to the head, we need to adjust the pointers,
654 * as the pointer for a still points to b, and maybe vice versa.
655 */
656 #define svany_in_head(type) \
657 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
658
659 if (svany_in_head (SvTYPE (a)))
660 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
661
662 if (svany_in_head (SvTYPE (b)))
663 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
664 }
665#endif
666 }
667}
668
669#define SWAP_SVS(coro) \
670 if (expect_false ((coro)->swap_sv)) \
671 swap_svs (aTHX_ (coro))
672
673static void
674on_enterleave_call (pTHX_ SV *cb);
475 675
476static void 676static void
477load_perl (pTHX_ Coro__State c) 677load_perl (pTHX_ Coro__State c)
478{ 678{
479 perl_slots *slot = c->slot; 679 perl_slots *slot = c->slot;
480 c->slot = 0; 680 c->slot = 0;
481 681
482 PL_mainstack = c->mainstack; 682 PL_mainstack = c->mainstack;
483 683
484 GvSV (PL_defgv) = slot->defsv; 684 GvSV (PL_defgv) = slot->defsv;
485 GvAV (PL_defgv) = slot->defav; 685 GvAV (PL_defgv) = slot->defav;
486 GvSV (PL_errgv) = slot->errsv; 686 GvSV (PL_errgv) = slot->errsv;
487 GvSV (irsgv) = slot->irsgv; 687 GvSV (irsgv) = slot->irsgv;
688 GvHV (PL_hintgv) = slot->hinthv;
488 689
489 #define VAR(name,type) PL_ ## name = slot->name; 690 #define VAR(name,type) PL_ ## name = slot->name;
490 # include "state.h" 691 # include "state.h"
491 #undef VAR 692 #undef VAR
492 693
… …
505 706
506 PUTBACK; 707 PUTBACK;
507 } 708 }
508 709
509 slf_frame = c->slf_frame; 710 slf_frame = c->slf_frame;
510 coro_throw = c->throw; 711 CORO_THROW = c->except;
712
713 if (expect_false (enable_times))
714 {
715 if (expect_false (!times_valid))
716 coro_times_update ();
717
718 coro_times_sub (c);
719 }
720
721 if (expect_false (c->on_enter))
722 {
723 int i;
724
725 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
726 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
727 }
728
729 SWAP_SVS (c);
511} 730}
512 731
513static void 732static void
514save_perl (pTHX_ Coro__State c) 733save_perl (pTHX_ Coro__State c)
515{ 734{
516 c->throw = coro_throw; 735 SWAP_SVS (c);
736
737 if (expect_false (c->on_leave))
738 {
739 int i;
740
741 for (i = AvFILLp (c->on_leave); i >= 0; --i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
743 }
744
745 times_valid = 0;
746
747 if (expect_false (enable_times))
748 {
749 coro_times_update (); times_valid = 1;
750 coro_times_add (c);
751 }
752
753 c->except = CORO_THROW;
517 c->slf_frame = slf_frame; 754 c->slf_frame = slf_frame;
518 755
519 { 756 {
520 dSP; 757 dSP;
521 I32 cxix = cxstack_ix; 758 I32 cxix = cxstack_ix;
… …
533 { 770 {
534 while (expect_true (cxix >= 0)) 771 while (expect_true (cxix >= 0))
535 { 772 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 773 PERL_CONTEXT *cx = &ccstk[cxix--];
537 774
538 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 775 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
539 { 776 {
540 CV *cv = cx->blk_sub.cv; 777 CV *cv = cx->blk_sub.cv;
541 778
542 if (expect_true (CvDEPTH (cv))) 779 if (expect_true (CvDEPTH (cv)))
543 { 780 {
… …
562 799
563 PUTBACK; 800 PUTBACK;
564 } 801 }
565 802
566 /* allocate some space on the context stack for our purposes */ 803 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 804 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 805 {
572 int i; 806 unsigned int i;
807
573 for (i = 3; i < SLOT_COUNT; ++i) 808 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 809 CXINC;
575 } 810
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 811 cxstack_ix -= SLOT_COUNT; /* undo allocation */
812 }
577 813
578 c->mainstack = PL_mainstack; 814 c->mainstack = PL_mainstack;
579 815
580 { 816 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 818
583 slot->defav = GvAV (PL_defgv); 819 slot->defav = GvAV (PL_defgv);
584 slot->defsv = DEFSV; 820 slot->defsv = DEFSV;
585 slot->errsv = ERRSV; 821 slot->errsv = ERRSV;
586 slot->irsgv = GvSV (irsgv); 822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
587 824
588 #define VAR(name,type) slot->name = PL_ ## name; 825 #define VAR(name,type) slot->name = PL_ ## name;
589 # include "state.h" 826 # include "state.h"
590 #undef VAR 827 #undef VAR
591 } 828 }
… …
596 * of perl.c:init_stacks, except that it uses less memory 833 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 834 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 835 * not usually need a lot of stackspace.
599 */ 836 */
600#if CORO_PREFER_PERL_FUNCTIONS 837#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 838# define coro_init_stacks(thx) init_stacks ()
602#else 839#else
603static void 840static void
604coro_init_stacks (pTHX) 841coro_init_stacks (pTHX)
605{ 842{
606 PL_curstackinfo = new_stackinfo(32, 8); 843 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 844 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 845 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 846 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 847
611 PL_stack_base = AvARRAY(PL_curstack); 848 PL_stack_base = AvARRAY(PL_curstack);
… …
669#if !PERL_VERSION_ATLEAST (5,10,0) 906#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 907 Safefree (PL_retstack);
671#endif 908#endif
672} 909}
673 910
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
674static size_t 920static size_t
675coro_rss (pTHX_ struct coro *coro) 921coro_rss (pTHX_ struct coro *coro)
676{ 922{
677 size_t rss = sizeof (*coro); 923 size_t rss = sizeof (*coro);
678 924
679 if (coro->mainstack) 925 if (coro->mainstack)
680 { 926 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 927 if (coro->flags & CF_RUNNING)
685 { 928 {
686 slot = &tmp_slot; 929 #define SYM(sym) PL_ ## sym
687 930 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 931 #undef SYM
691 } 932 }
692 else 933 else
693 slot = coro->slot;
694
695 if (slot)
696 { 934 {
697 rss += sizeof (slot->curstackinfo); 935 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 936 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 937 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 938 }
709 } 939 }
710 940
711 return rss; 941 return rss;
712} 942}
… …
725#endif 955#endif
726 956
727/* 957/*
728 * This overrides the default magic get method of %SIG elements. 958 * This overrides the default magic get method of %SIG elements.
729 * 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
730 * 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
731 * readback here. 961 * readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 962 */
736static int 963static int
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 965{
739 const char *s = MgPV_nolen_const (mg); 966 const char *s = MgPV_nolen_const (mg);
… …
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793 1020
794 if (svp) 1021 if (svp)
795 { 1022 {
796 SV *old = *svp; 1023 SV *old = *svp;
797 *svp = newSVsv (sv); 1024 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1025 SvREFCNT_dec (old);
799 return 0; 1026 return 0;
800 } 1027 }
801 } 1028 }
802 1029
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1041slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1042{
816 return 0; 1043 return 0;
817} 1044}
818 1045
1046static int
1047slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{
1049 return 1;
1050}
1051
1052static UNOP init_perl_op;
1053
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1054static void NOINLINE /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1055init_perl (pTHX_ struct coro *coro)
821{ 1056{
822 /* 1057 /*
823 * emulate part of the perl startup here. 1058 * emulate part of the perl startup here.
824 */ 1059 */
825 coro_init_stacks (aTHX); 1060 coro_init_stacks (aTHX);
826 1061
827 PL_runops = RUNOPS_DEFAULT; 1062 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1063 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1064 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1065 PL_comppad = 0;
1066 PL_comppad_name = 0;
1067 PL_comppad_name_fill = 0;
1068 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1069 PL_curpm = 0;
832 PL_curpad = 0; 1070 PL_curpad = 0;
833 PL_localizing = 0; 1071 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1072 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1073#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1074 PL_parser = 0;
838#endif 1075#endif
1076 PL_hints = 0;
839 1077
840 /* recreate the die/warn hooks */ 1078 /* recreate the die/warn hooks */
841 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 );
842 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);
843 1081
844 GvSV (PL_defgv) = newSV (0); 1082 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1083 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1084 GvSV (PL_errgv) = newSV (0);
847 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;
848 PL_rs = newSVsv (GvSV (irsgv)); 1087 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1089
851 { 1090 {
852 dSP; 1091 dSP;
853 UNOP myop; 1092 UNOP myop;
854 1093
855 Zero (&myop, 1, UNOP); 1094 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1095 myop.op_next = Nullop;
1096 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1097 myop.op_flags = OPf_WANT_VOID;
858 1098
859 PUSHMARK (SP); 1099 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1100 PUSHs ((SV *)coro->startcv);
861 PUTBACK; 1101 PUTBACK;
862 PL_op = (OP *)&myop; 1102 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1104 }
866 1105
867 /* 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
868 * 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.
869 */ 1108 */
870 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 */
871 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 */
872 1111
873 coro_throw = coro->throw; 1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 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 */
875 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
876static void 1132static void
877coro_destruct (pTHX_ struct coro *coro) 1133coro_unwind_stacks (pTHX)
878{ 1134{
879 if (!IN_DESTRUCT) 1135 if (!IN_DESTRUCT)
880 { 1136 {
881 /* restore all saved variables and stuff */ 1137 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1138 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1146 POPSTACK_TO (PL_mainstack);
891 1147
892 /* unwind main stack */ 1148 /* unwind main stack */
893 dounwind (-1); 1149 dounwind (-1);
894 } 1150 }
1151}
895 1152
896 SvREFCNT_dec (GvSV (PL_defgv)); 1153static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1154destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1155{
899 SvREFCNT_dec (PL_defoutgv); 1156 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1157
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1158 {
1159 SV *old_current = SvRV (coro_current);
1160 struct coro *current = SvSTATE (old_current);
1161
1162 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1163
1164 save_perl (aTHX_ current);
1165
1166 /* this will cause transfer_check to croak on block*/
1167 SvRV_set (coro_current, (SV *)coro->hv);
1168
1169 load_perl (aTHX_ coro);
1170
1171 coro_unwind_stacks (aTHX);
1172 coro_destruct_stacks (aTHX);
1173
1174 /* restore swapped sv's */
1175 SWAP_SVS (coro);
1176
1177 // now save some sv's to be free'd later
1178 svf [0] = GvSV (PL_defgv);
1179 svf [1] = (SV *)GvAV (PL_defgv);
1180 svf [2] = GvSV (PL_errgv);
1181 svf [3] = (SV *)PL_defoutgv;
1182 svf [4] = PL_rs;
1183 svf [5] = GvSV (irsgv);
1184 svf [6] = (SV *)GvHV (PL_hintgv);
1185 svf [7] = PL_diehook;
1186 svf [8] = PL_warnhook;
1187 assert (9 == sizeof (svf) / sizeof (*svf));
1188
1189 SvRV_set (coro_current, old_current);
1190
1191 load_perl (aTHX_ current);
1192 }
1193
1194 {
1195 unsigned int i;
1196
1197 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1198 SvREFCNT_dec (svf [i]);
1199
906 SvREFCNT_dec (coro->saved_deffh); 1200 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1201 SvREFCNT_dec (coro->rouse_cb);
908 1202 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1203 SvREFCNT_dec (coro->invoke_av);
1204 }
910} 1205}
911 1206
912INLINE void 1207INLINE void
913free_coro_mortal (pTHX) 1208free_coro_mortal (pTHX)
914{ 1209{
… …
922static int 1217static int
923runops_trace (pTHX) 1218runops_trace (pTHX)
924{ 1219{
925 COP *oldcop = 0; 1220 COP *oldcop = 0;
926 int oldcxix = -2; 1221 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1222
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1223 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1224 {
932 PERL_ASYNC_CHECK (); 1225 PERL_ASYNC_CHECK ();
933 1226
934 if (cctx->flags & CC_TRACE_ALL) 1227 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1228 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1229 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1230 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1231 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1232 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1233 AV *av = newAV (); /* return values */
941 SV **cb; 1234 SV **cb;
… …
978 1271
979 if (PL_curcop != &PL_compiling) 1272 if (PL_curcop != &PL_compiling)
980 { 1273 {
981 SV **cb; 1274 SV **cb;
982 1275
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1276 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
984 { 1277 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1278 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1279
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1280 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1281 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1282 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1283 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1284 SV *fullname = sv_2mortal (newSV (0));
993 1285
994 if (isGV (gv)) 1286 if (isGV (gv))
… …
999 SAVETMPS; 1291 SAVETMPS;
1000 EXTEND (SP, 3); 1292 EXTEND (SP, 3);
1001 PUSHMARK (SP); 1293 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1294 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1295 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1296 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005 PUTBACK; 1297 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1298 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1299 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1300 SPAGAIN;
1009 FREETMPS; 1301 FREETMPS;
… …
1012 } 1304 }
1013 1305
1014 oldcxix = cxstack_ix; 1306 oldcxix = cxstack_ix;
1015 } 1307 }
1016 1308
1017 if (cctx->flags & CC_TRACE_LINE) 1309 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1310 {
1019 dSP; 1311 dSP;
1020 1312
1021 PL_runops = RUNOPS_DEFAULT; 1313 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1314 ENTER;
… …
1041 1333
1042 TAINT_NOT; 1334 TAINT_NOT;
1043 return 0; 1335 return 0;
1044} 1336}
1045 1337
1338static struct CoroSLF cctx_ssl_frame;
1339
1046static void 1340static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1341slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1342{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1343 ta->prev = 0;
1051} 1344}
1052 1345
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1346static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1347slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */ 1348{
1056/* also initialises PL_top_env */ 1349 *frame = cctx_ssl_frame;
1350
1351 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1352}
1353
1354/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1057static void NOINLINE 1355static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx) 1356cctx_prepare (pTHX)
1059{ 1357{
1060 dSP;
1061 UNOP myop;
1062
1063 PL_top_env = &PL_start_env; 1358 PL_top_env = &PL_start_env;
1064 1359
1065 if (cctx->flags & CC_TRACE) 1360 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
1067 1362
1068 Zero (&myop, 1, UNOP); 1363 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1364 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1365 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1366 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1367
1072 PUSHMARK (SP); 1368 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1369 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1370
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1371 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1372 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1373}
1081 1374
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1375/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1376INLINE void
1084transfer_tail (pTHX) 1377transfer_tail (pTHX)
… …
1103 /* normally we would need to skip the entersub here */ 1396 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1397 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1398 /* PL_nop = PL_nop->op_next */
1106 1399
1107 /* inject a fake subroutine call to cctx_init */ 1400 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1401 cctx_prepare (aTHX);
1109 1402
1110 /* cctx_run is the alternative tail of transfer() */ 1403 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1404 transfer_tail (aTHX);
1112 1405
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1406 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1407 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1408 perl_run (PL_curinterp);
1409 /*
1410 * Unfortunately, there is no way to get at the return values of the
1411 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1412 * runtime errors here, as this is just a random interpreter, not a thread.
1413 */
1116 1414
1117 /* 1415 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1416 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1417 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1418 * reason for perl_run to return. We try to exit by jumping to the
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1419 * bootstrap-time "top" top_env, as we cannot restore the "main"
1122 * coroutine as Coro has no such concept 1420 * coroutine as Coro has no such concept.
1421 * This actually isn't valid with the pthread backend, but OSes requiring
1422 * that backend are too broken to do it in a standards-compliant way.
1123 */ 1423 */
1124 PL_top_env = main_top_env; 1424 PL_top_env = main_top_env;
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1425 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1426 }
1127} 1427}
… …
1204cctx_destroy (coro_cctx *cctx) 1504cctx_destroy (coro_cctx *cctx)
1205{ 1505{
1206 if (!cctx) 1506 if (!cctx)
1207 return; 1507 return;
1208 1508
1509 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1510
1209 --cctx_count; 1511 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1512 coro_destroy (&cctx->cctx);
1211 1513
1212 /* coro_transfer creates new, empty cctx's */ 1514 /* coro_transfer creates new, empty cctx's */
1213 if (cctx->sptr) 1515 if (cctx->sptr)
… …
1276 /* TODO: throwing up here is considered harmful */ 1578 /* TODO: throwing up here is considered harmful */
1277 1579
1278 if (expect_true (prev != next)) 1580 if (expect_true (prev != next))
1279 { 1581 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1582 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1583 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1584
1283 if (expect_false (next->flags & CF_RUNNING))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED)) 1585 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1586 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1587
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1588#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1589 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1590 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1591#endif
… …
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1597transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1598{
1300 dSTACKLEVEL; 1599 dSTACKLEVEL;
1301 1600
1302 /* sometimes transfer is only called to set idle_sp */ 1601 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1602 if (expect_false (!prev))
1304 { 1603 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1604 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1605 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1606 }
1308 else if (expect_true (prev != next)) 1607 else if (expect_true (prev != next))
1309 { 1608 {
1310 coro_cctx *prev__cctx; 1609 coro_cctx *cctx_prev;
1311 1610
1312 if (expect_false (prev->flags & CF_NEW)) 1611 if (expect_false (prev->flags & CF_NEW))
1313 { 1612 {
1314 /* create a new empty/source context */ 1613 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1614 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1615 prev->flags |= CF_RUNNING;
1318 } 1616 }
1319 1617
1320 prev->flags &= ~CF_RUNNING; 1618 prev->flags &= ~CF_RUNNING;
… …
1326 if (expect_false (next->flags & CF_NEW)) 1624 if (expect_false (next->flags & CF_NEW))
1327 { 1625 {
1328 /* need to start coroutine */ 1626 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1627 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1628 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1629 init_perl (aTHX_ next);
1332 } 1630 }
1333 else 1631 else
1334 load_perl (aTHX_ next); 1632 load_perl (aTHX_ next);
1335 1633
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1634 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1635 if (expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1636 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1637 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1638 && !force_cctx
1343 )) 1639 ))
1344 { 1640 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1641 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1642 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1643
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1644 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1645 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1646 if (expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1647 if (expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1648 next->cctx = cctx_get (aTHX);
1355 1649
1356 cctx_put (prev__cctx); 1650 cctx_put (cctx_current);
1357 } 1651 }
1652 else
1653 prev->cctx = cctx_current;
1358 1654
1359 ++next->usecount; 1655 ++next->usecount;
1360 1656
1361 if (expect_true (!next->cctx)) 1657 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1658 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1659
1364 if (expect_false (prev__cctx != next->cctx)) 1660 next->cctx = 0;
1661
1662 if (expect_false (cctx_prev != cctx_current))
1365 { 1663 {
1366 prev__cctx->top_env = PL_top_env; 1664 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1665 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1666 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1667 }
1370 1668
1371 transfer_tail (aTHX); 1669 transfer_tail (aTHX);
1372 } 1670 }
1373} 1671}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1673#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1674#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1675
1378/** high level stuff ********************************************************/ 1676/** high level stuff ********************************************************/
1379 1677
1380static int 1678static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1679coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1680{
1383 if (coro->flags & CF_DESTROYED) 1681 if (coro->flags & CF_DESTROYED)
1384 return 0; 1682 return;
1385 1683
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1684 slf_destroy (aTHX_ coro);
1388 1685
1389 coro->flags |= CF_DESTROYED; 1686 coro->flags |= CF_DESTROYED;
1390 1687
1391 if (coro->flags & CF_READY) 1688 if (coro->flags & CF_READY)
1392 { 1689 {
… …
1395 --coro_nready; 1692 --coro_nready;
1396 } 1693 }
1397 else 1694 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1695 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1696
1400 if (coro->mainstack && coro->mainstack != main_mainstack) 1697 if (coro->mainstack
1401 { 1698 && coro->mainstack != main_mainstack
1402 struct coro temp; 1699 && coro->slot
1403 1700 && !PL_dirty)
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro); 1701 destroy_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418 1702
1419 if (coro->next) coro->next->prev = coro->prev; 1703 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1704 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1705 if (coro == coro_first) coro_first = coro->next;
1422 1706
1423 return 1; 1707 cctx_destroy (coro->cctx);
1708 SvREFCNT_dec (coro->startcv);
1709 SvREFCNT_dec (coro->args);
1710 SvREFCNT_dec (coro->swap_sv);
1711 SvREFCNT_dec (CORO_THROW);
1424} 1712}
1425 1713
1426static int 1714static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1715coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1716{
… …
1481/** Coro ********************************************************************/ 1769/** Coro ********************************************************************/
1482 1770
1483INLINE void 1771INLINE void
1484coro_enq (pTHX_ struct coro *coro) 1772coro_enq (pTHX_ struct coro *coro)
1485{ 1773{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1774 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1775
1489INLINE SV * 1776 SvREFCNT_inc_NN (coro->hv);
1777
1778 coro->next_ready = 0;
1779 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1780 ready [1] = coro;
1781}
1782
1783INLINE struct coro *
1490coro_deq (pTHX) 1784coro_deq (pTHX)
1491{ 1785{
1492 int prio; 1786 int prio;
1493 1787
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1788 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1789 {
1496 return av_shift (coro_ready [prio]); 1790 struct coro **ready = coro_ready [prio];
1791
1792 if (ready [0])
1793 {
1794 struct coro *coro = ready [0];
1795 ready [0] = coro->next_ready;
1796 return coro;
1797 }
1798 }
1497 1799
1498 return 0; 1800 return 0;
1801}
1802
1803static void
1804invoke_sv_ready_hook_helper (void)
1805{
1806 dTHX;
1807 dSP;
1808
1809 ENTER;
1810 SAVETMPS;
1811
1812 PUSHMARK (SP);
1813 PUTBACK;
1814 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1815
1816 FREETMPS;
1817 LEAVE;
1499} 1818}
1500 1819
1501static int 1820static int
1502api_ready (pTHX_ SV *coro_sv) 1821api_ready (pTHX_ SV *coro_sv)
1503{ 1822{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1512 1824
1513 if (coro->flags & CF_READY) 1825 if (coro->flags & CF_READY)
1514 return 0; 1826 return 0;
1515 1827
1516 coro->flags |= CF_READY; 1828 coro->flags |= CF_READY;
1517 1829
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1830 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1831
1524 if (sv_hook) 1832 if (!coro_nready++)
1525 { 1833 if (coroapi.readyhook)
1526 dSP; 1834 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1835
1543 return 1; 1836 return 1;
1544} 1837}
1545 1838
1546static int 1839static int
1547api_is_ready (pTHX_ SV *coro_sv) 1840api_is_ready (pTHX_ SV *coro_sv)
1548{ 1841{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1842 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1843}
1551 1844
1845/* expects to own a reference to next->hv */
1552INLINE void 1846INLINE void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1847prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1848{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1849 SV *prev_sv = SvRV (coro_current);
1850
1595 ta->prev = SvSTATE_hv (prev_sv); 1851 ta->prev = SvSTATE_hv (prev_sv);
1852 ta->next = next;
1853
1596 TRANSFER_CHECK (*ta); 1854 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1855
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1856 SvRV_set (coro_current, (SV *)next->hv);
1600 1857
1601 free_coro_mortal (aTHX); 1858 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1859 coro_mortal = prev_sv;
1603} 1860}
1604 1861
1862static void
1863prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1864{
1865 for (;;)
1866 {
1867 struct coro *next = coro_deq (aTHX);
1868
1869 if (expect_true (next))
1870 {
1871 /* cannot transfer to destroyed coros, skip and look for next */
1872 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1873 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1874 else
1875 {
1876 next->flags &= ~CF_READY;
1877 --coro_nready;
1878
1879 prepare_schedule_to (aTHX_ ta, next);
1880 break;
1881 }
1882 }
1883 else
1884 {
1885 /* nothing to schedule: call the idle handler */
1886 if (SvROK (sv_idle)
1887 && SvOBJECT (SvRV (sv_idle)))
1888 {
1889 if (SvRV (sv_idle) == SvRV (coro_current))
1890 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1891
1892 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1893 api_ready (aTHX_ SvRV (sv_idle));
1894 --coro_nready;
1895 }
1896 else
1897 {
1898 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1899 dSP;
1900
1901 ENTER;
1902 SAVETMPS;
1903
1904 PUSHMARK (SP);
1905 PUTBACK;
1906 call_sv (sv_idle, G_VOID | G_DISCARD);
1907
1908 FREETMPS;
1909 LEAVE;
1910 }
1911 }
1912 }
1913}
1914
1605INLINE void 1915INLINE void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 1916prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 1917{
1608 api_ready (aTHX_ coro_current); 1918 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 1919 prepare_schedule (aTHX_ ta);
… …
1628{ 1938{
1629 struct coro_transfer_args ta; 1939 struct coro_transfer_args ta;
1630 1940
1631 prepare_schedule (aTHX_ &ta); 1941 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 1942 TRANSFER (ta, 1);
1943}
1944
1945static void
1946api_schedule_to (pTHX_ SV *coro_sv)
1947{
1948 struct coro_transfer_args ta;
1949 struct coro *next = SvSTATE (coro_sv);
1950
1951 SvREFCNT_inc_NN (coro_sv);
1952 prepare_schedule_to (aTHX_ &ta, next);
1633} 1953}
1634 1954
1635static int 1955static int
1636api_cede (pTHX) 1956api_cede (pTHX)
1637{ 1957{
… …
1666static void 1986static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 1987api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 1988{
1669 struct coro *coro = SvSTATE (coro_sv); 1989 struct coro *coro = SvSTATE (coro_sv);
1670 1990
1991 if (coro->flags & CF_RUNNING)
1992 croak ("cannot enable tracing on a running coroutine, caught");
1993
1671 if (flags & CC_TRACE) 1994 if (flags & CC_TRACE)
1672 { 1995 {
1673 if (!coro->cctx) 1996 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 1997 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 1998 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 1999 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2000
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2001 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2002 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2003 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2004 {
… …
1684 if (coro->flags & CF_RUNNING) 2007 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2008 PL_runops = RUNOPS_DEFAULT;
1686 else 2009 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2010 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2011 }
2012}
2013
2014static void
2015coro_call_on_destroy (pTHX_ struct coro *coro)
2016{
2017 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2018
2019 if (on_destroyp)
2020 {
2021 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2022 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2023 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2024
2025 while (AvFILLp (on_destroy) >= 0)
2026 {
2027 dSP; /* don't disturb outer sp */
2028 SV *cb = av_pop (on_destroy);
2029
2030 PUSHMARK (SP);
2031
2032 if (statusp)
2033 {
2034 int i;
2035 EXTEND (SP, AvFILLp (status) + 1);
2036
2037 for (i = 0; i <= AvFILLp (status); ++i)
2038 PUSHs (AvARRAY (status)[i]);
2039 }
2040
2041 PUTBACK;
2042 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2043 }
2044 }
2045}
2046
2047static void
2048coro_set_status (pTHX_ HV *coro_hv, SV **arg, int items)
2049{
2050 AV *av = newAV ();
2051
2052 /* items are actually not so common, so optimise for this case */
2053 if (items)
2054 {
2055 int i;
2056
2057 av_extend (av, items - 1);
2058
2059 for (i = 0; i < items; ++i)
2060 av_push (av, SvREFCNT_inc_NN (arg [i]));
2061 }
2062
2063 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2064}
2065
2066static void
2067slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2068{
2069 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2070 api_ready (aTHX_ sv_manager);
2071
2072 frame->prepare = prepare_schedule;
2073 frame->check = slf_check_repeat;
2074
2075 /* as a minor optimisation, we could unwind all stacks here */
2076 /* but that puts extra pressure on pp_slf, and is not worth much */
2077 /*coro_unwind_stacks (aTHX);*/
2078}
2079
2080static void
2081slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 HV *coro_hv = (HV *)SvRV (coro_current);
2084
2085 coro_set_status (aTHX_ coro_hv, arg, items);
2086 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2087}
2088
2089static void
2090slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 HV *coro_hv;
2093 struct coro *coro;
2094
2095 if (items <= 0)
2096 croak ("Coro::cancel called without coro object,");
2097
2098 coro = SvSTATE (arg [0]);
2099 coro_hv = coro->hv;
2100
2101 coro_set_status (aTHX_ coro_hv, arg + 1, items - 1);
2102
2103 if (expect_false (coro->flags & CF_NOCANCEL))
2104 {
2105 /* coro currently busy cancelling something, so just notify it */
2106 coro->slf_frame.data = (void *)coro;
2107
2108 frame->prepare = prepare_nop;
2109 frame->check = slf_check_nop;
2110 }
2111 else if (coro_hv == (HV *)SvRV (coro_current))
2112 {
2113 /* cancelling the current coro is allowed, and equals terminate */
2114 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2115 }
2116 else
2117 {
2118 struct coro *self = SvSTATE_current;
2119
2120 /* otherwise we cancel directly, purely for speed reasons
2121 * unfortunately, this requires some magic trickery, as
2122 * somebody else could cancel us, so we have to fight the cancellation.
2123 * this is ugly, and hopefully fully worth the extra speed.
2124 * besides, I can't get the slow-but-safe version working...
2125 */
2126 slf_frame.data = 0;
2127 self->flags |= CF_NOCANCEL;
2128
2129 coro_state_destroy (aTHX_ coro);
2130 coro_call_on_destroy (aTHX_ coro);
2131
2132 self->flags &= ~CF_NOCANCEL;
2133
2134 if (slf_frame.data)
2135 {
2136 /* while we were busy we have been cancelled, so terminate */
2137 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2138 }
2139 else
2140 {
2141 frame->prepare = prepare_nop;
2142 frame->check = slf_check_nop;
2143 }
2144 }
2145}
2146
2147static int
2148slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2149{
2150 frame->prepare = 0;
2151 coro_unwind_stacks (aTHX);
2152
2153 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2154
2155 return 1;
2156}
2157
2158static int
2159safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2160{
2161 if (coro->cctx)
2162 croak ("coro inside C callback, unable to cancel at this time, caught");
2163
2164 if (coro->flags & CF_NEW)
2165 {
2166 coro_set_status (aTHX_ coro->hv, arg, items);
2167 coro_state_destroy (aTHX_ coro);
2168 coro_call_on_destroy (aTHX_ coro);
2169 }
2170 else
2171 {
2172 if (!coro->slf_frame.prepare)
2173 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2174
2175 slf_destroy (aTHX_ coro);
2176
2177 coro_set_status (aTHX_ coro->hv, arg, items);
2178 coro->slf_frame.prepare = prepare_nop;
2179 coro->slf_frame.check = slf_check_safe_cancel;
2180
2181 api_ready (aTHX_ coro->hv);
2182 }
2183
2184 return 1;
2185}
2186
2187/*****************************************************************************/
2188/* async pool handler */
2189
2190static int
2191slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2192{
2193 HV *hv = (HV *)SvRV (coro_current);
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->invoke_cb)
2197 return 1; /* loop till we have invoke */
2198 else
2199 {
2200 hv_store (hv, "desc", sizeof ("desc") - 1,
2201 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2202
2203 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2204
2205 {
2206 dSP;
2207 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2208 PUTBACK;
2209 }
2210
2211 SvREFCNT_dec (GvAV (PL_defgv));
2212 GvAV (PL_defgv) = coro->invoke_av;
2213 coro->invoke_av = 0;
2214
2215 return 0;
2216 }
2217}
2218
2219static void
2220slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *hv = (HV *)SvRV (coro_current);
2223 struct coro *coro = SvSTATE_hv ((SV *)hv);
2224
2225 if (expect_true (coro->saved_deffh))
2226 {
2227 /* subsequent iteration */
2228 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2229 coro->saved_deffh = 0;
2230
2231 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2232 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2233 {
2234 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2235 return;
2236 }
2237 else
2238 {
2239 av_clear (GvAV (PL_defgv));
2240 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2241
2242 coro->prio = 0;
2243
2244 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2245 api_trace (aTHX_ coro_current, 0);
2246
2247 frame->prepare = prepare_schedule;
2248 av_push (av_async_pool, SvREFCNT_inc (hv));
2249 }
2250 }
2251 else
2252 {
2253 /* first iteration, simply fall through */
2254 frame->prepare = prepare_nop;
2255 }
2256
2257 frame->check = slf_check_pool_handler;
2258 frame->data = (void *)coro;
2259}
2260
2261/*****************************************************************************/
2262/* rouse callback */
2263
2264#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2265
2266static void
2267coro_rouse_callback (pTHX_ CV *cv)
2268{
2269 dXSARGS;
2270 SV *data = (SV *)S_GENSUB_ARG;
2271
2272 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2273 {
2274 /* first call, set args */
2275 SV *coro = SvRV (data);
2276 AV *av = newAV ();
2277
2278 SvRV_set (data, (SV *)av);
2279
2280 /* better take a full copy of the arguments */
2281 while (items--)
2282 av_store (av, items, newSVsv (ST (items)));
2283
2284 api_ready (aTHX_ coro);
2285 SvREFCNT_dec (coro);
2286 }
2287
2288 XSRETURN_EMPTY;
2289}
2290
2291static int
2292slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2293{
2294 SV *data = (SV *)frame->data;
2295
2296 if (CORO_THROW)
2297 return 0;
2298
2299 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2300 return 1;
2301
2302 /* now push all results on the stack */
2303 {
2304 dSP;
2305 AV *av = (AV *)SvRV (data);
2306 int i;
2307
2308 EXTEND (SP, AvFILLp (av) + 1);
2309 for (i = 0; i <= AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2311
2312 /* we have stolen the elements, so set length to zero and free */
2313 AvFILLp (av) = -1;
2314 av_undef (av);
2315
2316 PUTBACK;
2317 }
2318
2319 return 0;
2320}
2321
2322static void
2323slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 SV *cb;
2326
2327 if (items)
2328 cb = arg [0];
2329 else
2330 {
2331 struct coro *coro = SvSTATE_current;
2332
2333 if (!coro->rouse_cb)
2334 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2335
2336 cb = sv_2mortal (coro->rouse_cb);
2337 coro->rouse_cb = 0;
2338 }
2339
2340 if (!SvROK (cb)
2341 || SvTYPE (SvRV (cb)) != SVt_PVCV
2342 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2343 croak ("Coro::rouse_wait called with illegal callback argument,");
2344
2345 {
2346 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2347 SV *data = (SV *)S_GENSUB_ARG;
2348
2349 frame->data = (void *)data;
2350 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2351 frame->check = slf_check_rouse_wait;
2352 }
2353}
2354
2355static SV *
2356coro_new_rouse_cb (pTHX)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = SvSTATE_hv (hv);
2360 SV *data = newRV_inc ((SV *)hv);
2361 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2362
2363 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2364 SvREFCNT_dec (data); /* magicext increases the refcount */
2365
2366 SvREFCNT_dec (coro->rouse_cb);
2367 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2368
2369 return cb;
1689} 2370}
1690 2371
1691/*****************************************************************************/ 2372/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2373/* schedule-like-function opcode (SLF) */
1693 2374
… …
1717 2398
1718 RETURNOP (slf_restore.op_first); 2399 RETURNOP (slf_restore.op_first);
1719} 2400}
1720 2401
1721static void 2402static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2403slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2404{
1740 SV **arg = (SV **)slf_frame.data; 2405 SV **arg = (SV **)slf_frame.data;
1741 2406
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2407 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2424 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2425 frame->check = slf_check_nop;
1761} 2426}
1762 2427
1763static void 2428static void
2429slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2430{
2431 struct coro *next = (struct coro *)slf_frame.data;
2432
2433 SvREFCNT_inc_NN (next->hv);
2434 prepare_schedule_to (aTHX_ ta, next);
2435}
2436
2437static void
2438slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2439{
2440 if (!items)
2441 croak ("Coro::schedule_to expects a coroutine argument, caught");
2442
2443 frame->data = (void *)SvSTATE (arg [0]);
2444 frame->prepare = slf_prepare_schedule_to;
2445 frame->check = slf_check_nop;
2446}
2447
2448static void
2449slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 api_ready (aTHX_ SvRV (coro_current));
2452
2453 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2454}
2455
2456static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2457slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2458{
1766 frame->prepare = prepare_cede; 2459 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2460 frame->check = slf_check_nop;
1768} 2461}
… …
1772{ 2465{
1773 frame->prepare = prepare_cede_notself; 2466 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2467 frame->check = slf_check_nop;
1775} 2468}
1776 2469
1777/* we hijack an hopefully unused CV flag for our purposes */ 2470/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2471static void
2472slf_destroy (pTHX_ struct coro *coro)
2473{
2474 /* this callback is reserved for slf functions needing to do cleanup */
2475 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2476 coro->slf_frame.destroy (aTHX_ coro);
2477
2478 /*
2479 * The on_destroy above most likely is from an SLF call.
2480 * Since by definition the SLF call will not finish when we destroy
2481 * the coro, we will have to force-finish it here, otherwise
2482 * cleanup functions cannot call SLF functions.
2483 */
2484 coro->slf_frame.prepare = 0;
2485}
1779 2486
1780/* 2487/*
1781 * these not obviously related functions are all rolled into one 2488 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2489 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2490 * stack offset
… …
1839 } 2546 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2547 while (slf_frame.check (aTHX_ &slf_frame));
1841 2548
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2549 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2550
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2551 /* exception handling */
1863 if (expect_false (coro_throw)) 2552 if (expect_false (CORO_THROW))
1864 { 2553 {
1865 SV *exception = sv_2mortal (coro_throw); 2554 SV *exception = sv_2mortal (CORO_THROW);
1866 2555
1867 coro_throw = 0; 2556 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2557 sv_setsv (ERRSV, exception);
1869 croak (0); 2558 croak (0);
2559 }
2560
2561 /* return value handling - mostly like entersub */
2562 /* make sure we put something on the stack in scalar context */
2563 if (GIMME_V == G_SCALAR)
2564 {
2565 dSP;
2566 SV **bot = PL_stack_base + checkmark;
2567
2568 if (sp == bot) /* too few, push undef */
2569 bot [1] = &PL_sv_undef;
2570 else if (sp != bot + 1) /* too many, take last one */
2571 bot [1] = *sp;
2572
2573 SP = bot + 1;
2574
2575 PUTBACK;
1870 } 2576 }
1871 2577
1872 return NORMAL; 2578 return NORMAL;
1873} 2579}
1874 2580
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2608 if (PL_op->op_flags & OPf_STACKED)
1903 { 2609 {
1904 if (items > slf_arga) 2610 if (items > slf_arga)
1905 { 2611 {
1906 slf_arga = items; 2612 slf_arga = items;
1907 free (slf_argv); 2613 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2614 New (0, slf_argv, slf_arga, SV *);
1909 } 2615 }
1910 2616
1911 slf_argc = items; 2617 slf_argc = items;
1912 2618
1913 for (i = 0; i < items; ++i) 2619 for (i = 0; i < items; ++i)
… …
1915 } 2621 }
1916 else 2622 else
1917 slf_argc = 0; 2623 slf_argc = 0;
1918 2624
1919 PL_op->op_ppaddr = pp_slf; 2625 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2626 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2627
1922 PL_op = (OP *)&slf_restore; 2628 PL_op = (OP *)&slf_restore;
2629}
2630
2631/*****************************************************************************/
2632/* dynamic wind */
2633
2634static void
2635on_enterleave_call (pTHX_ SV *cb)
2636{
2637 dSP;
2638
2639 PUSHSTACK;
2640
2641 PUSHMARK (SP);
2642 PUTBACK;
2643 call_sv (cb, G_VOID | G_DISCARD);
2644 SPAGAIN;
2645
2646 POPSTACK;
2647}
2648
2649static SV *
2650coro_avp_pop_and_free (pTHX_ AV **avp)
2651{
2652 AV *av = *avp;
2653 SV *res = av_pop (av);
2654
2655 if (AvFILLp (av) < 0)
2656 {
2657 *avp = 0;
2658 SvREFCNT_dec (av);
2659 }
2660
2661 return res;
2662}
2663
2664static void
2665coro_pop_on_enter (pTHX_ void *coro)
2666{
2667 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2668 SvREFCNT_dec (cb);
2669}
2670
2671static void
2672coro_pop_on_leave (pTHX_ void *coro)
2673{
2674 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2675 on_enterleave_call (aTHX_ sv_2mortal (cb));
1923} 2676}
1924 2677
1925/*****************************************************************************/ 2678/*****************************************************************************/
1926/* PerlIO::cede */ 2679/* PerlIO::cede */
1927 2680
… …
1996 PerlIOBuf_get_cnt, 2749 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 2750 PerlIOBuf_set_ptrcnt,
1998}; 2751};
1999 2752
2000/*****************************************************************************/ 2753/*****************************************************************************/
2754/* Coro::Semaphore & Coro::Signal */
2755
2756static SV *
2757coro_waitarray_new (pTHX_ int count)
2758{
2759 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2760 AV *av = newAV ();
2761 SV **ary;
2762
2763 /* unfortunately, building manually saves memory */
2764 Newx (ary, 2, SV *);
2765 AvALLOC (av) = ary;
2766#if PERL_VERSION_ATLEAST (5,10,0)
2767 AvARRAY (av) = ary;
2768#else
2769 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2770 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2771 SvPVX ((SV *)av) = (char *)ary;
2772#endif
2773 AvMAX (av) = 1;
2774 AvFILLp (av) = 0;
2775 ary [0] = newSViv (count);
2776
2777 return newRV_noinc ((SV *)av);
2778}
2779
2001/* Coro::Semaphore */ 2780/* semaphore */
2002 2781
2003static void 2782static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2783coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 2784{
2006 SV *count_sv = AvARRAY (av)[0]; 2785 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 2797 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 2798 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 2799 cb = av_shift (av);
2021 2800
2022 if (SvOBJECT (cb)) 2801 if (SvOBJECT (cb))
2802 {
2023 api_ready (aTHX_ cb); 2803 api_ready (aTHX_ cb);
2024 else 2804 --count;
2025 croak ("callbacks not yet supported"); 2805 }
2806 else if (SvTYPE (cb) == SVt_PVCV)
2807 {
2808 dSP;
2809 PUSHMARK (SP);
2810 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2811 PUTBACK;
2812 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2813 }
2026 2814
2027 SvREFCNT_dec (cb); 2815 SvREFCNT_dec (cb);
2028
2029 --count;
2030 } 2816 }
2031} 2817}
2032 2818
2033static void 2819static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2820coro_semaphore_destroy (pTHX_ struct coro *coro)
2035{ 2821{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2822 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2823 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038} 2824}
2039 2825
2040static int 2826static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2827slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 2828{
2043 AV *av = (AV *)frame->data; 2829 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 2830 SV *count_sv = AvARRAY (av)[0];
2045 2831
2832 /* if we are about to throw, don't actually acquire the lock, just throw */
2833 if (CORO_THROW)
2834 return 0;
2046 if (SvIVX (count_sv) > 0) 2835 else if (SvIVX (count_sv) > 0)
2047 { 2836 {
2048 SvSTATE_current->on_destroy = 0; 2837 frame->destroy = 0;
2838
2839 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2840 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2841 else
2842 coro_semaphore_adjust (aTHX_ av, 0);
2843
2050 return 0; 2844 return 0;
2051 } 2845 }
2052 else 2846 else
2053 { 2847 {
2054 int i; 2848 int i;
… …
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2857 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064 return 1; 2858 return 1;
2065 } 2859 }
2066} 2860}
2067 2861
2068static void 2862static int
2863slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2864{
2865 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2866}
2867
2868static int
2869slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2870{
2871 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2872}
2873
2874static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2875slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 2876{
2071 AV *av = (AV *)SvRV (arg [0]); 2877 AV *av = (AV *)SvRV (arg [0]);
2072 2878
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 2879 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 2880 {
2075 frame->data = (void *)av; 2881 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 2882 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2883 }
2079 else 2884 else
2080 { 2885 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2886 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 2887
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2888 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 2889 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 2890 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2891 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2892 frame->destroy = coro_semaphore_destroy;
2090 } 2893 }
2894}
2091 2895
2896static void
2897slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2898{
2899 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 2900 frame->check = slf_check_semaphore_down;
2093
2094} 2901}
2095 2902
2096/*****************************************************************************/ 2903static void
2097/* gensub: simple closure generation utility */ 2904slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2905{
2107 CV *cv = (CV *)newSV (0); 2906 if (items >= 2)
2907 {
2908 /* callback form */
2909 AV *av = (AV *)SvRV (arg [0]);
2910 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 2911
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2912 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 2913
2111 CvANON_on (cv); 2914 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 2915 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2916
2116 return newRV_noinc ((SV *)cv); 2917 frame->prepare = prepare_nop;
2918 frame->check = slf_check_nop;
2919 }
2920 else
2921 {
2922 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2923 frame->check = slf_check_semaphore_wait;
2924 }
2925}
2926
2927/* signal */
2928
2929static void
2930coro_signal_wake (pTHX_ AV *av, int count)
2931{
2932 SvIVX (AvARRAY (av)[0]) = 0;
2933
2934 /* now signal count waiters */
2935 while (count > 0 && AvFILLp (av) > 0)
2936 {
2937 SV *cb;
2938
2939 /* swap first two elements so we can shift a waiter */
2940 cb = AvARRAY (av)[0];
2941 AvARRAY (av)[0] = AvARRAY (av)[1];
2942 AvARRAY (av)[1] = cb;
2943
2944 cb = av_shift (av);
2945
2946 if (SvTYPE (cb) == SVt_PVCV)
2947 {
2948 dSP;
2949 PUSHMARK (SP);
2950 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2951 PUTBACK;
2952 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2953 }
2954 else
2955 {
2956 api_ready (aTHX_ cb);
2957 sv_setiv (cb, 0); /* signal waiter */
2958 }
2959
2960 SvREFCNT_dec (cb);
2961
2962 --count;
2963 }
2964}
2965
2966static int
2967slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2968{
2969 /* if we are about to throw, also stop waiting */
2970 return SvROK ((SV *)frame->data) && !CORO_THROW;
2971}
2972
2973static void
2974slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2975{
2976 AV *av = (AV *)SvRV (arg [0]);
2977
2978 if (items >= 2)
2979 {
2980 SV *cb_cv = s_get_cv_croak (arg [1]);
2981 av_push (av, SvREFCNT_inc_NN (cb_cv));
2982
2983 if (SvIVX (AvARRAY (av)[0]))
2984 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2985
2986 frame->prepare = prepare_nop;
2987 frame->check = slf_check_nop;
2988 }
2989 else if (SvIVX (AvARRAY (av)[0]))
2990 {
2991 SvIVX (AvARRAY (av)[0]) = 0;
2992 frame->prepare = prepare_nop;
2993 frame->check = slf_check_nop;
2994 }
2995 else
2996 {
2997 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2998
2999 av_push (av, waiter);
3000
3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3002 frame->prepare = prepare_schedule;
3003 frame->check = slf_check_signal_wait;
3004 }
2117} 3005}
2118 3006
2119/*****************************************************************************/ 3007/*****************************************************************************/
2120/* Coro::AIO */ 3008/* Coro::AIO */
2121 3009
… …
2132 3020
2133static void 3021static void
2134coro_aio_callback (pTHX_ CV *cv) 3022coro_aio_callback (pTHX_ CV *cv)
2135{ 3023{
2136 dXSARGS; 3024 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3025 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3026 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3027 SV *data_sv = newSV (sizeof (struct io_state));
2140 3028
2141 av_extend (state, items); 3029 av_extend (state, items - 1);
2142 3030
2143 sv_upgrade (data_sv, SVt_PV); 3031 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3032 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3033 SvPOK_only (data_sv);
2146 3034
… …
2171static int 3059static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3060slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3061{
2174 AV *state = (AV *)frame->data; 3062 AV *state = (AV *)frame->data;
2175 3063
3064 /* if we are about to throw, return early */
3065 /* this does not cancel the aio request, but at least */
3066 /* it quickly returns */
3067 if (CORO_THROW)
3068 return 0;
3069
2176 /* one element that is an RV? repeat! */ 3070 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3071 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1; 3072 return 1;
2179 3073
2180 /* restore status */ 3074 /* restore status */
… …
2250 3144
2251 for (i = 0; i < items; ++i) 3145 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3146 PUSHs (arg [i]);
2253 3147
2254 /* now push the callback closure */ 3148 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3149 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3150
2257 /* now call the AIO function - we assume our request is uncancelable */ 3151 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3152 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3153 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3154 }
2261 3155
2262 /* now that the requets is going, we loop toll we have a result */ 3156 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3157 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3158 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3159 frame->check = slf_check_aio_req;
2266} 3160}
2267 3161
… …
2274 3168
2275 XSRETURN_EMPTY; 3169 XSRETURN_EMPTY;
2276} 3170}
2277 3171
2278/*****************************************************************************/ 3172/*****************************************************************************/
3173
3174#if CORO_CLONE
3175# include "clone.c"
3176#endif
3177
3178/*****************************************************************************/
3179
3180static SV *
3181coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3182{
3183 SV *coro_sv;
3184 struct coro *coro;
3185 MAGIC *mg;
3186 HV *hv;
3187 SV *cb;
3188 int i;
3189
3190 if (argc > 0)
3191 {
3192 cb = s_get_cv_croak (argv [0]);
3193
3194 if (!is_coro)
3195 {
3196 if (CvISXSUB (cb))
3197 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3198
3199 if (!CvROOT (cb))
3200 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3201 }
3202 }
3203
3204 Newz (0, coro, 1, struct coro);
3205 coro->args = newAV ();
3206 coro->flags = CF_NEW;
3207
3208 if (coro_first) coro_first->prev = coro;
3209 coro->next = coro_first;
3210 coro_first = coro;
3211
3212 coro->hv = hv = newHV ();
3213 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3214 mg->mg_flags |= MGf_DUP;
3215 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3216
3217 if (argc > 0)
3218 {
3219 av_extend (coro->args, argc + is_coro - 1);
3220
3221 if (is_coro)
3222 {
3223 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3224 cb = (SV *)cv_coro_run;
3225 }
3226
3227 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3228
3229 for (i = 1; i < argc; i++)
3230 av_push (coro->args, newSVsv (argv [i]));
3231 }
3232
3233 return coro_sv;
3234}
2279 3235
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3236MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3237
2282PROTOTYPES: DISABLE 3238PROTOTYPES: DISABLE
2283 3239
… …
2288 coro_thx = PERL_GET_CONTEXT; 3244 coro_thx = PERL_GET_CONTEXT;
2289# endif 3245# endif
2290#endif 3246#endif
2291 BOOT_PAGESIZE; 3247 BOOT_PAGESIZE;
2292 3248
3249 cctx_current = cctx_new_empty ();
3250
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3251 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3252 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3253
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3254 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3255 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2316 3274
2317 { 3275 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3276 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3277
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3278 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3279 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3280
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3281 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3282 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3283 }
2328 3284
2329 coroapi.ver = CORO_API_VERSION; 3285 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3286 coroapi.rev = CORO_API_REVISION;
2331 3287
… …
2336 coroapi.prepare_nop = prepare_nop; 3292 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3293 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3294 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3295 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3296
2341 { 3297 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3298
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3299 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2351} 3300}
2352 3301
2353SV * 3302SV *
2354new (char *klass, ...) 3303new (SV *klass, ...)
3304 ALIAS:
3305 Coro::new = 1
2355 CODE: 3306 CODE:
2356{ 3307 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3308 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3309 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3310
2387void 3311void
2388transfer (...) 3312transfer (...)
2389 PROTOTYPE: $$ 3313 PROTOTYPE: $$
2390 CODE: 3314 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3315 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3316
2393bool
2394_destroy (SV *coro_sv)
2395 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2397 OUTPUT:
2398 RETVAL
2399
2400void 3317void
2401_exit (int code) 3318_exit (int code)
2402 PROTOTYPE: $ 3319 PROTOTYPE: $
2403 CODE: 3320 CODE:
2404 _exit (code); 3321 _exit (code);
3322
3323SV *
3324clone (Coro::State coro)
3325 CODE:
3326{
3327#if CORO_CLONE
3328 struct coro *ncoro = coro_clone (aTHX_ coro);
3329 MAGIC *mg;
3330 /* TODO: too much duplication */
3331 ncoro->hv = newHV ();
3332 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3333 mg->mg_flags |= MGf_DUP;
3334 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3335#else
3336 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3337#endif
3338}
3339 OUTPUT:
3340 RETVAL
2405 3341
2406int 3342int
2407cctx_stacksize (int new_stacksize = 0) 3343cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3344 PROTOTYPE: ;$
2409 CODE: 3345 CODE:
… …
2459 eval = 1 3395 eval = 1
2460 CODE: 3396 CODE:
2461{ 3397{
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3398 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2463 { 3399 {
2464 struct coro temp; 3400 struct coro *current = SvSTATE_current;
3401 struct CoroSLF slf_save;
2465 3402
2466 if (!(coro->flags & CF_RUNNING)) 3403 if (current != coro)
2467 { 3404 {
2468 PUTBACK; 3405 PUTBACK;
2469 save_perl (aTHX_ &temp); 3406 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3407 load_perl (aTHX_ coro);
3408 /* the coro is most likely in an active SLF call.
3409 * while not strictly required (the code we execute is
3410 * not allowed to call any SLF functions), it's cleaner
3411 * to reinitialise the slf_frame and restore it later.
3412 * This might one day allow us to actually do SLF calls
3413 * from code executed here.
3414 */
3415 slf_save = slf_frame;
3416 slf_frame.prepare = 0;
3417 SPAGAIN;
2471 } 3418 }
2472 3419
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3420 PUSHSTACK;
3421
2479 PUSHMARK (SP); 3422 PUSHMARK (SP);
3423 PUTBACK;
2480 3424
2481 if (ix) 3425 if (ix)
2482 eval_sv (coderef, 0); 3426 eval_sv (coderef, 0);
2483 else 3427 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3428 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3429
2486 POPSTACK; 3430 POPSTACK;
2487 SPAGAIN; 3431 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3432
2493 if (!(coro->flags & CF_RUNNING)) 3433 if (current != coro)
2494 { 3434 {
3435 PUTBACK;
3436 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3437 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3438 load_perl (aTHX_ current);
2497 SPAGAIN; 3439 SPAGAIN;
2498 } 3440 }
2499 } 3441 }
2500} 3442}
2501 3443
… …
2505 ALIAS: 3447 ALIAS:
2506 is_ready = CF_READY 3448 is_ready = CF_READY
2507 is_running = CF_RUNNING 3449 is_running = CF_RUNNING
2508 is_new = CF_NEW 3450 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3451 is_destroyed = CF_DESTROYED
3452 is_suspended = CF_SUSPENDED
2510 CODE: 3453 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3454 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3455 OUTPUT:
2513 RETVAL 3456 RETVAL
2514 3457
2515void 3458void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3459throw (Coro::State self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3460 PROTOTYPE: $;$
2518 CODE: 3461 CODE:
2519{ 3462{
2520 struct coro *current = SvSTATE_current; 3463 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3464 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2522 SvREFCNT_dec (*throwp); 3465 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3466 SvGETMAGIC (exception);
3467 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2524} 3468}
2525 3469
2526void 3470void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3471api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3472 PROTOTYPE: $;$
… …
2530 3474
2531SV * 3475SV *
2532has_cctx (Coro::State coro) 3476has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3477 PROTOTYPE: $
2534 CODE: 3478 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3479 /* maybe manage the running flag differently */
3480 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3481 OUTPUT:
2537 RETVAL 3482 RETVAL
2538 3483
2539int 3484int
2540is_traced (Coro::State coro) 3485is_traced (Coro::State coro)
… …
2560 3505
2561void 3506void
2562force_cctx () 3507force_cctx ()
2563 PROTOTYPE: 3508 PROTOTYPE:
2564 CODE: 3509 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3510 cctx_current->idle_sp = 0;
2566 3511
2567void 3512void
2568swap_defsv (Coro::State self) 3513swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3514 PROTOTYPE: $
2570 ALIAS: 3515 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3523 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3524
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3525 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3526 }
2582 3527
3528void
3529cancel (Coro::State self)
3530 CODE:
3531 coro_state_destroy (aTHX_ self);
3532
3533SV *
3534enable_times (int enabled = enable_times)
3535 CODE:
3536{
3537 RETVAL = boolSV (enable_times);
3538
3539 if (enabled != enable_times)
3540 {
3541 enable_times = enabled;
3542
3543 coro_times_update ();
3544 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3545 }
3546}
3547 OUTPUT:
3548 RETVAL
3549
3550void
3551times (Coro::State self)
3552 PPCODE:
3553{
3554 struct coro *current = SvSTATE (coro_current);
3555
3556 if (expect_false (current == self))
3557 {
3558 coro_times_update ();
3559 coro_times_add (SvSTATE (coro_current));
3560 }
3561
3562 EXTEND (SP, 2);
3563 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3564 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3565
3566 if (expect_false (current == self))
3567 coro_times_sub (SvSTATE (coro_current));
3568}
3569
3570void
3571swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3572 CODE:
3573{
3574 struct coro *current = SvSTATE_current;
3575
3576 if (current == coro)
3577 SWAP_SVS (current);
3578
3579 if (!coro->swap_sv)
3580 coro->swap_sv = newAV ();
3581
3582 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3583 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3584
3585 if (current == coro)
3586 SWAP_SVS (current);
3587}
3588
2583 3589
2584MODULE = Coro::State PACKAGE = Coro 3590MODULE = Coro::State PACKAGE = Coro
2585 3591
2586BOOT: 3592BOOT:
2587{ 3593{
2588 int i;
2589
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3594 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3595 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 3596 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3597 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 3598 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3599 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3600 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3601 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2596 3602
3603 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3604 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3605 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3606 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3607
2597 coro_stash = gv_stashpv ("Coro", TRUE); 3608 coro_stash = gv_stashpv ("Coro", TRUE);
2598 3609
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3610 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3611 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3612 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3613 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3614 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3615 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 3616
2609 { 3617 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3618 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 3619
2612 coroapi.schedule = api_schedule; 3620 coroapi.schedule = api_schedule;
3621 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 3622 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 3623 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 3624 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 3625 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 3626 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 3627 coroapi.current = coro_current;
2619 3628
2620 GCoroAPI = &coroapi; 3629 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 3630 sv_setiv (sv, (IV)&coroapi);
2622 SvREADONLY_on (sv); 3631 SvREADONLY_on (sv);
2623 } 3632 }
2624} 3633}
3634
3635SV *
3636async (...)
3637 PROTOTYPE: &@
3638 CODE:
3639 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3640 api_ready (aTHX_ RETVAL);
3641 OUTPUT:
3642 RETVAL
3643
3644void
3645_destroy (Coro::State coro)
3646 CODE:
3647 /* used by the manager thread */
3648 coro_state_destroy (aTHX_ coro);
3649 coro_call_on_destroy (aTHX_ coro);
3650
3651void
3652terminate (...)
3653 CODE:
3654 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3655
3656void
3657cancel (...)
3658 CODE:
3659 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3660
3661int
3662safe_cancel (Coro::State self, ...)
3663 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 3664
2626void 3665void
2627schedule (...) 3666schedule (...)
2628 CODE: 3667 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3668 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3669
3670void
3671schedule_to (...)
3672 CODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3674
3675void
3676cede_to (...)
3677 CODE:
3678 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2630 3679
2631void 3680void
2632cede (...) 3681cede (...)
2633 CODE: 3682 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 3683 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2648void 3697void
2649_set_readyhook (SV *hook) 3698_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 3699 PROTOTYPE: $
2651 CODE: 3700 CODE:
2652 SvREFCNT_dec (coro_readyhook); 3701 SvREFCNT_dec (coro_readyhook);
3702 SvGETMAGIC (hook);
3703 if (SvOK (hook))
3704 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3705 coro_readyhook = newSVsv (hook);
3706 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3707 }
3708 else
3709 {
3710 coro_readyhook = 0;
3711 CORO_READYHOOK = 0;
3712 }
2654 3713
2655int 3714int
2656prio (Coro::State coro, int newprio = 0) 3715prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 3716 PROTOTYPE: $;$
2658 ALIAS: 3717 ALIAS:
… …
2664 if (items > 1) 3723 if (items > 1)
2665 { 3724 {
2666 if (ix) 3725 if (ix)
2667 newprio = coro->prio - newprio; 3726 newprio = coro->prio - newprio;
2668 3727
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3728 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3729 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 3730
2672 coro->prio = newprio; 3731 coro->prio = newprio;
2673 } 3732 }
2674} 3733}
2675 OUTPUT: 3734 OUTPUT:
… …
2689 CODE: 3748 CODE:
2690 RETVAL = coro_nready; 3749 RETVAL = coro_nready;
2691 OUTPUT: 3750 OUTPUT:
2692 RETVAL 3751 RETVAL
2693 3752
2694# for async_pool speedup
2695void 3753void
2696_pool_1 (SV *cb) 3754suspend (Coro::State self)
3755 PROTOTYPE: $
2697 CODE: 3756 CODE:
2698{ 3757 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 3758
2706 if (!invoke) 3759void
3760resume (Coro::State self)
3761 PROTOTYPE: $
3762 CODE:
3763 self->flags &= ~CF_SUSPENDED;
3764
3765void
3766_pool_handler (...)
3767 CODE:
3768 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3769
3770void
3771async_pool (SV *cv, ...)
3772 PROTOTYPE: &@
3773 PPCODE:
3774{
3775 HV *hv = (HV *)av_pop (av_async_pool);
3776 AV *av = newAV ();
3777 SV *cb = ST (0);
3778 int i;
3779
3780 av_extend (av, items - 2);
3781 for (i = 1; i < items; ++i)
3782 av_push (av, SvREFCNT_inc_NN (ST (i)));
3783
3784 if ((SV *)hv == &PL_sv_undef)
2707 { 3785 {
2708 SV *old = PL_diehook; 3786 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 3787 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 3788 SvREFCNT_dec (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 3789 }
2713 3790
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 3791 {
2727 av_fill (defav, len - 1); 3792 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 3793
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3794 assert (!coro->invoke_cb);
3795 assert (!coro->invoke_av);
3796 coro->invoke_cb = SvREFCNT_inc (cb);
3797 coro->invoke_av = av;
2730 } 3798 }
3799
3800 api_ready (aTHX_ (SV *)hv);
3801
3802 if (GIMME_V != G_VOID)
3803 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3804 else
3805 SvREFCNT_dec (hv);
2731} 3806}
3807
3808SV *
3809rouse_cb ()
3810 PROTOTYPE:
3811 CODE:
3812 RETVAL = coro_new_rouse_cb (aTHX);
3813 OUTPUT:
3814 RETVAL
2732 3815
2733void 3816void
2734_pool_2 (SV *cb) 3817rouse_wait (...)
3818 PROTOTYPE: ;$
3819 PPCODE:
3820 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3821
3822void
3823on_enter (SV *block)
3824 ALIAS:
3825 on_leave = 1
3826 PROTOTYPE: &
2735 CODE: 3827 CODE:
2736{ 3828{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 3829 struct coro *coro = SvSTATE_current;
3830 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 3831
2740 sv_setsv (cb, &PL_sv_undef); 3832 block = s_get_cv_croak (block);
2741 3833
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3834 if (!*avp)
2743 coro->saved_deffh = 0; 3835 *avp = newAV ();
2744 3836
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3837 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 3838
2754 av_clear (GvAV (PL_defgv)); 3839 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 3840 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 3841
2758 coro->prio = 0; 3842 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 3843 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3844 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 3845}
2765 3846
2766 3847
2767MODULE = Coro::State PACKAGE = PerlIO::cede 3848MODULE = Coro::State PACKAGE = PerlIO::cede
2768 3849
… …
2771 3852
2772 3853
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 3854MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 3855
2775SV * 3856SV *
2776new (SV *klass, SV *count_ = 0) 3857new (SV *klass, SV *count = 0)
2777 CODE: 3858 CODE:
2778{ 3859{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3860 int semcnt = 1;
2780 AV *av = newAV (); 3861
2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3862 if (count)
2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3863 {
3864 SvGETMAGIC (count);
3865
3866 if (SvOK (count))
3867 semcnt = SvIV (count);
3868 }
3869
3870 RETVAL = sv_bless (
3871 coro_waitarray_new (aTHX_ semcnt),
3872 GvSTASH (CvGV (cv))
3873 );
2783} 3874}
3875 OUTPUT:
3876 RETVAL
3877
3878# helper for Coro::Channel and others
3879SV *
3880_alloc (int count)
3881 CODE:
3882 RETVAL = coro_waitarray_new (aTHX_ count);
2784 OUTPUT: 3883 OUTPUT:
2785 RETVAL 3884 RETVAL
2786 3885
2787SV * 3886SV *
2788count (SV *self) 3887count (SV *self)
… …
2797 adjust = 1 3896 adjust = 1
2798 CODE: 3897 CODE:
2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3898 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800 3899
2801void 3900void
2802down (SV *self) 3901down (...)
2803 CODE: 3902 CODE:
2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3903 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3904
3905void
3906wait (...)
3907 CODE:
3908 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2805 3909
2806void 3910void
2807try (SV *self) 3911try (SV *self)
2808 PPCODE: 3912 PPCODE:
2809{ 3913{
… …
2821 XSRETURN_NO; 3925 XSRETURN_NO;
2822} 3926}
2823 3927
2824void 3928void
2825waiters (SV *self) 3929waiters (SV *self)
2826 CODE: 3930 PPCODE:
2827{ 3931{
2828 AV *av = (AV *)SvRV (self); 3932 AV *av = (AV *)SvRV (self);
3933 int wcount = AvFILLp (av) + 1 - 1;
2829 3934
2830 if (GIMME_V == G_SCALAR) 3935 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3936 XPUSHs (sv_2mortal (newSViv (wcount)));
2832 else 3937 else
2833 { 3938 {
2834 int i; 3939 int i;
2835 EXTEND (SP, AvFILLp (av) + 1 - 1); 3940 EXTEND (SP, wcount);
2836 for (i = 1; i <= AvFILLp (av); ++i) 3941 for (i = 1; i <= wcount; ++i)
2837 PUSHs (newSVsv (AvARRAY (av)[i])); 3942 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2838 } 3943 }
2839} 3944}
3945
3946MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3947
3948void
3949_may_delete (SV *sem, int count, int extra_refs)
3950 PPCODE:
3951{
3952 AV *av = (AV *)SvRV (sem);
3953
3954 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3955 && AvFILLp (av) == 0 /* no waiters, just count */
3956 && SvIV (AvARRAY (av)[0]) == count)
3957 XSRETURN_YES;
3958
3959 XSRETURN_NO;
3960}
3961
3962MODULE = Coro::State PACKAGE = Coro::Signal
3963
3964SV *
3965new (SV *klass)
3966 CODE:
3967 RETVAL = sv_bless (
3968 coro_waitarray_new (aTHX_ 0),
3969 GvSTASH (CvGV (cv))
3970 );
3971 OUTPUT:
3972 RETVAL
3973
3974void
3975wait (...)
3976 CODE:
3977 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3978
3979void
3980broadcast (SV *self)
3981 CODE:
3982{
3983 AV *av = (AV *)SvRV (self);
3984 coro_signal_wake (aTHX_ av, AvFILLp (av));
3985}
3986
3987void
3988send (SV *self)
3989 CODE:
3990{
3991 AV *av = (AV *)SvRV (self);
3992
3993 if (AvFILLp (av))
3994 coro_signal_wake (aTHX_ av, 1);
3995 else
3996 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3997}
3998
3999IV
4000awaited (SV *self)
4001 CODE:
4002 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4003 OUTPUT:
4004 RETVAL
2840 4005
2841 4006
2842MODULE = Coro::State PACKAGE = Coro::AnyEvent 4007MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843 4008
2844BOOT: 4009BOOT:
… …
2859 sv_setsv (sv_activity, &PL_sv_undef); 4024 sv_setsv (sv_activity, &PL_sv_undef);
2860 if (coro_nready >= incede) 4025 if (coro_nready >= incede)
2861 { 4026 {
2862 PUSHMARK (SP); 4027 PUSHMARK (SP);
2863 PUTBACK; 4028 PUTBACK;
2864 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4029 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2865 SPAGAIN;
2866 } 4030 }
2867 4031
2868 --incede; 4032 --incede;
2869} 4033}
2870 4034
… …
2873 4037
2874void 4038void
2875_register (char *target, char *proto, SV *req) 4039_register (char *target, char *proto, SV *req)
2876 CODE: 4040 CODE:
2877{ 4041{
2878 HV *st; 4042 SV *req_cv = s_get_cv_croak (req);
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */ 4043 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4044 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto); 4045 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4046 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885} 4047}
2886 4048
4049MODULE = Coro::State PACKAGE = Coro::Select
4050
4051void
4052patch_pp_sselect ()
4053 CODE:
4054 if (!coro_old_pp_sselect)
4055 {
4056 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4057 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4058 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4059 }
4060
4061void
4062unpatch_pp_sselect ()
4063 CODE:
4064 if (coro_old_pp_sselect)
4065 {
4066 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4067 coro_old_pp_sselect = 0;
4068 }
4069

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