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Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC vs.
Revision 1.388 by root, Wed Feb 23 07:14:22 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
22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
17#ifdef WIN32 26#ifdef WIN32
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
108#endif 68#endif
109 69
110#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
117#endif 77#endif
118 78
119/* The next macros try to return the current stack pointer, in an as 79/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 80 * portable way as possible. */
121#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
123#else 84#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
125#endif 87#endif
126 88
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
128 90
129#if __GNUC__ >= 3 91#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 94# define INLINE static inline
133#else 95#else
134# define attribute(x) 96# define attribute(x)
135# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
136# define INLINE static 98# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
141 103
142#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
143 105
144#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
145 108
146#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
147# if CORO_PTHREAD 110# if CORO_PTHREAD
148static void *coro_thx; 111static void *coro_thx;
149# endif 112# endif
150#endif 113#endif
151 114
152/* helper storage struct for Coro::AIO */ 115#ifdef __linux
153struct io_state 116# include <time.h> /* for timespec */
154{ 117# include <syscall.h> /* for SYS_* */
155 AV *res; 118# ifdef SYS_clock_gettime
156 int errorno; 119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 120# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 122# endif
160}; 123#endif
161 124
162static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
127
128/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX);
163 131
164static U32 cctx_gen; 132static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 133static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 134static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 135static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 136static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 137static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 138static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 139
140static AV *av_destroy; /* destruction queue */
141static SV *sv_manager; /* the manager coro */
142static SV *sv_idle; /* $Coro::idle */
172 143
173static GV *irsgv; /* $/ */ 144static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 145static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 146static SV *rv_diehook;
176static SV *rv_warnhook; 147static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 148static HV *hv_sig; /* %SIG */
178 149
179/* async_pool helper stuff */ 150/* async_pool helper stuff */
180static SV *sv_pool_rss; 151static SV *sv_pool_rss;
181static SV *sv_pool_size; 152static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 154static AV *av_async_pool; /* idle pool */
155static SV *sv_Coro; /* class string */
156static CV *cv_pool_handler;
183 157
184/* Coro::AnyEvent */ 158/* Coro::AnyEvent */
185static SV *sv_activity; 159static SV *sv_activity;
160
161/* enable processtime/realtime profiling */
162static char enable_times;
163typedef U32 coro_ts[2];
164static coro_ts time_real, time_cpu;
165static char times_valid;
186 166
187static struct coro_cctx *cctx_first; 167static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 168static int cctx_count, cctx_idle;
189 169
190enum { 170enum {
… …
216 int valgrind_id; 196 int valgrind_id;
217#endif 197#endif
218 unsigned char flags; 198 unsigned char flags;
219} coro_cctx; 199} coro_cctx;
220 200
201coro_cctx *cctx_current; /* the currently running cctx */
202
203/*****************************************************************************/
204
221enum { 205enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
226}; 211};
227 212
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 213/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 214typedef struct
230{ 215{
231 SV *defsv; 216 SV *defsv;
232 AV *defav; 217 AV *defav;
233 SV *errsv; 218 SV *errsv;
234 SV *irsgv; 219 SV *irsgv;
220 HV *hinthv;
235#define VAR(name,type) type name; 221#define VAR(name,type) type name;
236# include "state.h" 222# include "state.h"
237#undef VAR 223#undef VAR
238} perl_slots; 224} perl_slots;
239 225
… …
242/* this is a structure representing a perl-level coroutine */ 228/* this is a structure representing a perl-level coroutine */
243struct coro { 229struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 230 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 231 coro_cctx *cctx;
246 232
247 /* process data */ 233 /* ready queue */
234 struct coro *next_ready;
235
236 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 237 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 238 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
251 240
241 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 242 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 243 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 244 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 245 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 246 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
257 247
258 /* statistics */ 248 /* statistics */
259 int usecount; /* number of transfers to this coro */ 249 int usecount; /* number of transfers to this coro */
260 250
261 /* coro process data */ 251 /* coro process data */
262 int prio; 252 int prio;
263 SV *throw; /* exception to be thrown */ 253 SV *except; /* exception to be thrown */
254 SV *rouse_cb;
264 255
265 /* async_pool */ 256 /* async_pool */
266 SV *saved_deffh; 257 SV *saved_deffh;
258 SV *invoke_cb;
259 AV *invoke_av;
260
261 /* on_enter/on_leave */
262 AV *on_enter;
263 AV *on_leave;
264
265 /* swap_sv */
266 AV *swap_sv;
267
268 /* times */
269 coro_ts t_cpu, t_real;
267 270
268 /* linked list */ 271 /* linked list */
269 struct coro *next, *prev; 272 struct coro *next, *prev;
270}; 273};
271 274
272typedef struct coro *Coro__State; 275typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 276typedef struct coro *Coro__State_or_hashref;
274 277
278/* the following variables are effectively part of the perl context */
279/* and get copied between struct coro and these variables */
280/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 281static struct CoroSLF slf_frame; /* the current slf frame */
276 282
277/** Coro ********************************************************************/ 283/** Coro ********************************************************************/
278 284
279#define PRIO_MAX 3 285#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 286#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 287#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 288#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 289#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 290#define CORO_PRIO_MIN -4
285 291
286/* for Coro.pm */ 292/* for Coro.pm */
287static SV *coro_current; 293static SV *coro_current;
288static SV *coro_readyhook; 294static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 295static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
296static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 297static struct coro *coro_first;
291#define coro_nready coroapi.nready 298#define coro_nready coroapi.nready
299
300/** Coro::Select ************************************************************/
301
302static OP *(*coro_old_pp_sselect) (pTHX);
303static SV *coro_select_select;
304
305/* horrible hack, but if it works... */
306static OP *
307coro_pp_sselect (pTHX)
308{
309 dSP;
310 PUSHMARK (SP - 4); /* fake argument list */
311 XPUSHs (coro_select_select);
312 PUTBACK;
313
314 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
315 PL_op->op_flags |= OPf_STACKED;
316 PL_op->op_private = 0;
317 return PL_ppaddr [OP_ENTERSUB](aTHX);
318}
319
320/** time stuff **************************************************************/
321
322#ifdef HAS_GETTIMEOFDAY
323
324static void
325coro_u2time (pTHX_ UV ret[2])
326{
327 struct timeval tv;
328 gettimeofday (&tv, 0);
329
330 ret [0] = tv.tv_sec;
331 ret [1] = tv.tv_usec;
332}
333
334static double
335coro_nvtime ()
336{
337 struct timeval tv;
338 gettimeofday (&tv, 0);
339
340 return tv.tv_sec + tv.tv_usec * 1e-6;
341}
342
343static void
344time_init (pTHX)
345{
346 nvtime = coro_nvtime;
347 u2time = coro_u2time;
348}
349
350#else
351
352static void
353time_init (pTHX)
354{
355 SV **svp;
356
357 require_pv ("Time/HiRes.pm");
358
359 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
360
361 if (!svp) croak ("Time::HiRes is required, but missing.");
362 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
363
364 nvtime = INT2PTR (double (*)(), SvIV (*svp));
365
366 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
367 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
368}
369
370#endif
292 371
293/** lowlevel stuff **********************************************************/ 372/** lowlevel stuff **********************************************************/
294 373
295static SV * 374static SV *
296coro_get_sv (pTHX_ const char *name, int create) 375coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 399 get_hv (name, create);
321#endif 400#endif
322 return get_hv (name, create); 401 return get_hv (name, create);
323} 402}
324 403
404INLINE void
405coro_times_update ()
406{
407#ifdef coro_clock_gettime
408 struct timespec ts;
409
410 ts.tv_sec = ts.tv_nsec = 0;
411 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
412 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
413
414 ts.tv_sec = ts.tv_nsec = 0;
415 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
416 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
417#else
418 dTHX;
419 UV tv[2];
420
421 u2time (aTHX_ tv);
422 time_real [0] = tv [0];
423 time_real [1] = tv [1] * 1000;
424#endif
425}
426
427INLINE void
428coro_times_add (struct coro *c)
429{
430 c->t_real [1] += time_real [1];
431 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
432 c->t_real [0] += time_real [0];
433
434 c->t_cpu [1] += time_cpu [1];
435 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
436 c->t_cpu [0] += time_cpu [0];
437}
438
439INLINE void
440coro_times_sub (struct coro *c)
441{
442 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
443 c->t_real [1] -= time_real [1];
444 c->t_real [0] -= time_real [0];
445
446 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
447 c->t_cpu [1] -= time_cpu [1];
448 c->t_cpu [0] -= time_cpu [0];
449}
450
451/*****************************************************************************/
452/* magic glue */
453
454#define CORO_MAGIC_type_cv 26
455#define CORO_MAGIC_type_state PERL_MAGIC_ext
456
457#define CORO_MAGIC_NN(sv, type) \
458 (expect_true (SvMAGIC (sv)->mg_type == type) \
459 ? SvMAGIC (sv) \
460 : mg_find (sv, type))
461
462#define CORO_MAGIC(sv, type) \
463 (expect_true (SvMAGIC (sv)) \
464 ? CORO_MAGIC_NN (sv, type) \
465 : 0)
466
467#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
468#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
469
470INLINE struct coro *
471SvSTATE_ (pTHX_ SV *coro)
472{
473 HV *stash;
474 MAGIC *mg;
475
476 if (SvROK (coro))
477 coro = SvRV (coro);
478
479 if (expect_false (SvTYPE (coro) != SVt_PVHV))
480 croak ("Coro::State object required");
481
482 stash = SvSTASH (coro);
483 if (expect_false (stash != coro_stash && stash != coro_state_stash))
484 {
485 /* very slow, but rare, check */
486 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
487 croak ("Coro::State object required");
488 }
489
490 mg = CORO_MAGIC_state (coro);
491 return (struct coro *)mg->mg_ptr;
492}
493
494#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
495
496/* faster than SvSTATE, but expects a coroutine hv */
497#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
498#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
499
500/*****************************************************************************/
501/* padlist management and caching */
502
325static AV * 503static AV *
326coro_clone_padlist (pTHX_ CV *cv) 504coro_derive_padlist (pTHX_ CV *cv)
327{ 505{
328 AV *padlist = CvPADLIST (cv); 506 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 507 AV *newpadlist, *newpad;
330 508
331 newpadlist = newAV (); 509 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 514 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 515#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 516 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 517 --AvFILLp (padlist);
340 518
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 519 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 520 av_store (newpadlist, 1, (SV *)newpad);
343 521
344 return newpadlist; 522 return newpadlist;
345} 523}
346 524
347static void 525static void
348free_padlist (pTHX_ AV *padlist) 526free_padlist (pTHX_ AV *padlist)
349{ 527{
350 /* may be during global destruction */ 528 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 529 if (!IN_DESTRUCT)
352 { 530 {
353 I32 i = AvFILLp (padlist); 531 I32 i = AvFILLp (padlist);
354 while (i >= 0) 532
533 while (i > 0) /* special-case index 0 */
355 { 534 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 535 /* we try to be extra-careful here */
357 if (svp) 536 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 537 I32 j = AvFILLp (av);
359 SV *sv; 538
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 539 while (j >= 0)
540 SvREFCNT_dec (AvARRAY (av)[j--]);
541
542 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 543 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 544 }
366 545
546 SvREFCNT_dec (AvARRAY (padlist)[0]);
547
548 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 549 SvREFCNT_dec ((SV*)padlist);
368 } 550 }
369} 551}
370 552
371static int 553static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 554coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 555{
374 AV *padlist; 556 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 557 AV *av = (AV *)mg->mg_obj;
558
559 /* perl manages to free our internal AV and _then_ call us */
560 if (IN_DESTRUCT)
561 return 0;
376 562
377 /* casting is fun. */ 563 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 564 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 565 free_padlist (aTHX_ padlist);
380 566
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 567 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 568
383 return 0; 569 return 0;
384} 570}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 571
389static MGVTBL coro_cv_vtbl = { 572static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 573 0, 0, 0, 0,
391 coro_cv_free 574 coro_cv_free
392}; 575};
393
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 576
443/* the next two functions merely cache the padlists */ 577/* the next two functions merely cache the padlists */
444static void 578static void
445get_padlist (pTHX_ CV *cv) 579get_padlist (pTHX_ CV *cv)
446{ 580{
… …
452 else 586 else
453 { 587 {
454#if CORO_PREFER_PERL_FUNCTIONS 588#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 589 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 590 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 591 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 592 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 593 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 594 SvREFCNT_dec (cp);
461#else 595#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 596 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 597#endif
464 } 598 }
465} 599}
466 600
467static void 601static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 608 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 609
476 av = (AV *)mg->mg_obj; 610 av = (AV *)mg->mg_obj;
477 611
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 612 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 613 av_extend (av, AvFILLp (av) + 1);
480 614
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 615 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 616}
483 617
484/** load & save, init *******************************************************/ 618/** load & save, init *******************************************************/
619
620/* swap sv heads, at least logically */
621static void
622swap_svs (pTHX_ Coro__State c)
623{
624 int i;
625
626 for (i = 0; i <= AvFILLp (c->swap_sv); )
627 {
628 SV *a = AvARRAY (c->swap_sv)[i++];
629 SV *b = AvARRAY (c->swap_sv)[i++];
630
631 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
632 SV tmp;
633
634 /* swap sv_any */
635 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
636
637 /* swap sv_flags */
638 SvFLAGS (&tmp) = SvFLAGS (a);
639 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
640 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
641
642#if PERL_VERSION_ATLEAST (5,10,0)
643 /* perl 5.10 complicates this _quite_ a bit, but it also is
644 * much faster, so no quarrels here. alternatively, we could
645 * sv_upgrade to avoid this.
646 */
647 {
648 /* swap sv_u */
649 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
650
651 /* if SvANY points to the head, we need to adjust the pointers,
652 * as the pointer for a still points to b, and maybe vice versa.
653 */
654 #define svany_in_head(type) \
655 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
656
657 if (svany_in_head (SvTYPE (a)))
658 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
659
660 if (svany_in_head (SvTYPE (b)))
661 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
662 }
663#endif
664 }
665}
666
667#define SWAP_SVS(coro) \
668 if (expect_false ((coro)->swap_sv)) \
669 swap_svs (aTHX_ (coro))
670
671static void
672on_enterleave_call (pTHX_ SV *cb);
485 673
486static void 674static void
487load_perl (pTHX_ Coro__State c) 675load_perl (pTHX_ Coro__State c)
488{ 676{
489 perl_slots *slot = c->slot; 677 perl_slots *slot = c->slot;
490 c->slot = 0; 678 c->slot = 0;
491 679
492 PL_mainstack = c->mainstack; 680 PL_mainstack = c->mainstack;
493 681
494 GvSV (PL_defgv) = slot->defsv; 682 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 683 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 684 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 685 GvSV (irsgv) = slot->irsgv;
686 GvHV (PL_hintgv) = slot->hinthv;
498 687
499 #define VAR(name,type) PL_ ## name = slot->name; 688 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 689 # include "state.h"
501 #undef VAR 690 #undef VAR
502 691
… …
514 } 703 }
515 704
516 PUTBACK; 705 PUTBACK;
517 } 706 }
518 707
519 slf_frame = c->slf_frame; 708 slf_frame = c->slf_frame;
709 CORO_THROW = c->except;
710
711 if (expect_false (enable_times))
712 {
713 if (expect_false (!times_valid))
714 coro_times_update ();
715
716 coro_times_sub (c);
717 }
718
719 if (expect_false (c->on_enter))
720 {
721 int i;
722
723 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
724 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
725 }
726
727 SWAP_SVS (c);
520} 728}
521 729
522static void 730static void
523save_perl (pTHX_ Coro__State c) 731save_perl (pTHX_ Coro__State c)
524{ 732{
733 SWAP_SVS (c);
734
735 if (expect_false (c->on_leave))
736 {
737 int i;
738
739 for (i = AvFILLp (c->on_leave); i >= 0; --i)
740 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
741 }
742
743 times_valid = 0;
744
745 if (expect_false (enable_times))
746 {
747 coro_times_update (); times_valid = 1;
748 coro_times_add (c);
749 }
750
751 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 752 c->slf_frame = slf_frame;
526 753
527 { 754 {
528 dSP; 755 dSP;
529 I32 cxix = cxstack_ix; 756 I32 cxix = cxstack_ix;
… …
541 { 768 {
542 while (expect_true (cxix >= 0)) 769 while (expect_true (cxix >= 0))
543 { 770 {
544 PERL_CONTEXT *cx = &ccstk[cxix--]; 771 PERL_CONTEXT *cx = &ccstk[cxix--];
545 772
546 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 773 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
547 { 774 {
548 CV *cv = cx->blk_sub.cv; 775 CV *cv = cx->blk_sub.cv;
549 776
550 if (expect_true (CvDEPTH (cv))) 777 if (expect_true (CvDEPTH (cv)))
551 { 778 {
… …
575 /* we manually unroll here, as usually 2 slots is enough */ 802 /* we manually unroll here, as usually 2 slots is enough */
576 if (SLOT_COUNT >= 1) CXINC; 803 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC; 804 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC; 805 if (SLOT_COUNT >= 3) CXINC;
579 { 806 {
580 int i; 807 unsigned int i;
581 for (i = 3; i < SLOT_COUNT; ++i) 808 for (i = 3; i < SLOT_COUNT; ++i)
582 CXINC; 809 CXINC;
583 } 810 }
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 811 cxstack_ix -= SLOT_COUNT; /* undo allocation */
585 812
586 c->mainstack = PL_mainstack; 813 c->mainstack = PL_mainstack;
587 814
588 { 815 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 816 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 817
591 slot->defav = GvAV (PL_defgv); 818 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 819 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 820 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 821 slot->irsgv = GvSV (irsgv);
822 slot->hinthv = GvHV (PL_hintgv);
595 823
596 #define VAR(name,type) slot->name = PL_ ## name; 824 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 825 # include "state.h"
598 #undef VAR 826 #undef VAR
599 } 827 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 832 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 833 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 834 * not usually need a lot of stackspace.
607 */ 835 */
608#if CORO_PREFER_PERL_FUNCTIONS 836#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 837# define coro_init_stacks(thx) init_stacks ()
610#else 838#else
611static void 839static void
612coro_init_stacks (pTHX) 840coro_init_stacks (pTHX)
613{ 841{
614 PL_curstackinfo = new_stackinfo(32, 8); 842 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 905#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 906 Safefree (PL_retstack);
679#endif 907#endif
680} 908}
681 909
910#define CORO_RSS \
911 rss += sizeof (SYM (curstackinfo)); \
912 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
913 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
914 rss += SYM (tmps_max) * sizeof (SV *); \
915 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
916 rss += SYM (scopestack_max) * sizeof (I32); \
917 rss += SYM (savestack_max) * sizeof (ANY);
918
682static size_t 919static size_t
683coro_rss (pTHX_ struct coro *coro) 920coro_rss (pTHX_ struct coro *coro)
684{ 921{
685 size_t rss = sizeof (*coro); 922 size_t rss = sizeof (*coro);
686 923
687 if (coro->mainstack) 924 if (coro->mainstack)
688 { 925 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 926 if (coro->flags & CF_RUNNING)
693 { 927 {
694 slot = &tmp_slot; 928 #define SYM(sym) PL_ ## sym
695 929 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 930 #undef SYM
699 } 931 }
700 else 932 else
701 slot = coro->slot;
702
703 if (slot)
704 { 933 {
705 rss += sizeof (slot->curstackinfo); 934 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 935 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 936 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 937 }
717 } 938 }
718 939
719 return rss; 940 return rss;
720} 941}
… …
733#endif 954#endif
734 955
735/* 956/*
736 * This overrides the default magic get method of %SIG elements. 957 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 958 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 959 * and instead of trying to save and restore the hash elements, we just provide
739 * readback here. 960 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 961 */
744static int 962static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 963coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 964{
747 const char *s = MgPV_nolen_const (mg); 965 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1018 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 1019
802 if (svp) 1020 if (svp)
803 { 1021 {
804 SV *old = *svp; 1022 SV *old = *svp;
805 *svp = newSVsv (sv); 1023 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 1024 SvREFCNT_dec (old);
807 return 0; 1025 return 0;
808 } 1026 }
809 } 1027 }
810 1028
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 1040slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 1041{
824 return 0; 1042 return 0;
825} 1043}
826 1044
827static void 1045static int
1046slf_check_repeat (pTHX_ struct CoroSLF *frame)
1047{
1048 return 1;
1049}
1050
1051static UNOP init_perl_op;
1052
1053static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1054init_perl (pTHX_ struct coro *coro)
829{ 1055{
830 /* 1056 /*
831 * emulate part of the perl startup here. 1057 * emulate part of the perl startup here.
832 */ 1058 */
833 coro_init_stacks (aTHX); 1059 coro_init_stacks (aTHX);
834 1060
835 PL_runops = RUNOPS_DEFAULT; 1061 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1062 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1063 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1064 PL_comppad = 0;
1065 PL_comppad_name = 0;
1066 PL_comppad_name_fill = 0;
1067 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1068 PL_curpm = 0;
840 PL_curpad = 0; 1069 PL_curpad = 0;
841 PL_localizing = 0; 1070 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1071 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1072#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1073 PL_parser = 0;
846#endif 1074#endif
1075 PL_hints = 0;
847 1076
848 /* recreate the die/warn hooks */ 1077 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1078 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1079 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 1080
852 GvSV (PL_defgv) = newSV (0); 1081 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1082 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1083 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1084 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1085 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1086 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1087 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1088
859 { 1089 {
860 dSP; 1090 dSP;
861 UNOP myop; 1091 UNOP myop;
862 1092
863 Zero (&myop, 1, UNOP); 1093 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1094 myop.op_next = Nullop;
1095 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1096 myop.op_flags = OPf_WANT_VOID;
866 1097
867 PUSHMARK (SP); 1098 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1099 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1100 PUTBACK;
870 PL_op = (OP *)&myop; 1101 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1102 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1103 }
874 1104
875 /* this newly created coroutine might be run on an existing cctx which most 1105 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1106 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1107 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1108 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1109 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880}
881 1110
1111 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1112 init_perl_op.op_next = PL_op;
1113 init_perl_op.op_type = OP_ENTERSUB;
1114 init_perl_op.op_ppaddr = pp_slf;
1115 /* no flags etc. required, as an init function won't be called */
1116
1117 PL_op = (OP *)&init_perl_op;
1118
1119 /* copy throw, in case it was set before init_perl */
1120 CORO_THROW = coro->except;
1121
1122 SWAP_SVS (coro);
1123
1124 if (expect_false (enable_times))
1125 {
1126 coro_times_update ();
1127 coro_times_sub (coro);
1128 }
1129}
1130
882static void 1131static void
883coro_destruct (pTHX_ struct coro *coro) 1132coro_unwind_stacks (pTHX)
884{ 1133{
885 if (!IN_DESTRUCT) 1134 if (!IN_DESTRUCT)
886 { 1135 {
887 /* restore all saved variables and stuff */ 1136 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 1137 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1145 POPSTACK_TO (PL_mainstack);
897 1146
898 /* unwind main stack */ 1147 /* unwind main stack */
899 dounwind (-1); 1148 dounwind (-1);
900 } 1149 }
1150}
901 1151
902 SvREFCNT_dec (GvSV (PL_defgv)); 1152static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1153destroy_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1154{
905 SvREFCNT_dec (PL_defoutgv); 1155 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1156
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 1157 {
1158 struct coro *current = SvSTATE_current;
1159
1160 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1161
1162 save_perl (aTHX_ current);
1163 load_perl (aTHX_ coro);
1164
1165 coro_unwind_stacks (aTHX);
1166 coro_destruct_stacks (aTHX);
1167
1168 /* restore swapped sv's */
1169 SWAP_SVS (coro);
1170
1171 // now save some sv's to be free'd later
1172 svf [0] = GvSV (PL_defgv);
1173 svf [1] = (SV *)GvAV (PL_defgv);
1174 svf [2] = GvSV (PL_errgv);
1175 svf [3] = (SV *)PL_defoutgv;
1176 svf [4] = PL_rs;
1177 svf [5] = GvSV (irsgv);
1178 svf [6] = (SV *)GvHV (PL_hintgv);
1179 svf [7] = PL_diehook;
1180 svf [8] = PL_warnhook;
1181 assert (9 == sizeof (svf) / sizeof (*svf));
1182
1183 load_perl (aTHX_ current);
1184 }
1185
1186 {
1187 unsigned int i;
1188
1189 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1190 SvREFCNT_dec (svf [i]);
1191
912 SvREFCNT_dec (coro->saved_deffh); 1192 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1193 SvREFCNT_dec (coro->rouse_cb);
914 1194 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1195 SvREFCNT_dec (coro->invoke_av);
1196 }
916} 1197}
917 1198
918INLINE void 1199INLINE void
919free_coro_mortal (pTHX) 1200free_coro_mortal (pTHX)
920{ 1201{
… …
928static int 1209static int
929runops_trace (pTHX) 1210runops_trace (pTHX)
930{ 1211{
931 COP *oldcop = 0; 1212 COP *oldcop = 0;
932 int oldcxix = -2; 1213 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1214
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1215 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1216 {
938 PERL_ASYNC_CHECK (); 1217 PERL_ASYNC_CHECK ();
939 1218
940 if (cctx->flags & CC_TRACE_ALL) 1219 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1220 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1221 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1222 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1223 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1224 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1225 AV *av = newAV (); /* return values */
947 SV **cb; 1226 SV **cb;
… …
984 1263
985 if (PL_curcop != &PL_compiling) 1264 if (PL_curcop != &PL_compiling)
986 { 1265 {
987 SV **cb; 1266 SV **cb;
988 1267
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1268 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1269 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1270 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1271
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1272 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1273 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1274 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1275 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1276 SV *fullname = sv_2mortal (newSV (0));
999 1277
1000 if (isGV (gv)) 1278 if (isGV (gv))
… …
1005 SAVETMPS; 1283 SAVETMPS;
1006 EXTEND (SP, 3); 1284 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1285 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1286 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1287 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1288 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1289 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1290 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1291 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1292 SPAGAIN;
1015 FREETMPS; 1293 FREETMPS;
… …
1018 } 1296 }
1019 1297
1020 oldcxix = cxstack_ix; 1298 oldcxix = cxstack_ix;
1021 } 1299 }
1022 1300
1023 if (cctx->flags & CC_TRACE_LINE) 1301 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1302 {
1025 dSP; 1303 dSP;
1026 1304
1027 PL_runops = RUNOPS_DEFAULT; 1305 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1306 ENTER;
… …
1047 1325
1048 TAINT_NOT; 1326 TAINT_NOT;
1049 return 0; 1327 return 0;
1050} 1328}
1051 1329
1330static struct CoroSLF cctx_ssl_frame;
1331
1052static void 1332static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1333slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1334{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1335 ta->prev = 0;
1057} 1336}
1058 1337
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1338static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1339slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1340{
1062/* also initialises PL_top_env */ 1341 *frame = cctx_ssl_frame;
1342
1343 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1344}
1345
1346/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1347static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1348cctx_prepare (pTHX)
1065{ 1349{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1350 PL_top_env = &PL_start_env;
1070 1351
1071 if (cctx->flags & CC_TRACE) 1352 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1353 PL_runops = runops_trace;
1073 1354
1074 Zero (&myop, 1, UNOP); 1355 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1356 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1357 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1358 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1359
1078 PUSHMARK (SP); 1360 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1361 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1362
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1363 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1364 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1365}
1087 1366
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1367/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1368INLINE void
1090transfer_tail (pTHX) 1369transfer_tail (pTHX)
1091{ 1370{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1371 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1372}
1107 1373
1108/* 1374/*
1109 * this is a _very_ stripped down perl interpreter ;) 1375 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1376 */
… …
1122 /* normally we would need to skip the entersub here */ 1388 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1389 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1390 /* PL_nop = PL_nop->op_next */
1125 1391
1126 /* inject a fake subroutine call to cctx_init */ 1392 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1393 cctx_prepare (aTHX);
1128 1394
1129 /* cctx_run is the alternative tail of transfer() */ 1395 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1396 transfer_tail (aTHX);
1132 1397
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1398 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1399 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1400 perl_run (PL_curinterp);
1401 /*
1402 * Unfortunately, there is no way to get at the return values of the
1403 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1404 * runtime errors here, as this is just a random interpreter, not a thread.
1405 */
1136 1406
1137 /* 1407 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1408 * If perl-run returns we assume exit() was being called or the coro
1139 * fell off the end, which seems to be the only valid (non-bug) 1409 * fell off the end, which seems to be the only valid (non-bug)
1140 * reason for perl_run to return. We try to exit by jumping to the 1410 * reason for perl_run to return. We try to exit by jumping to the
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1411 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * coroutine as Coro has no such concept 1412 * coroutine as Coro has no such concept.
1413 * This actually isn't valid with the pthread backend, but OSes requiring
1414 * that backend are too broken to do it in a standards-compliant way.
1143 */ 1415 */
1144 PL_top_env = main_top_env; 1416 PL_top_env = main_top_env;
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1417 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1418 }
1147} 1419}
… …
1224cctx_destroy (coro_cctx *cctx) 1496cctx_destroy (coro_cctx *cctx)
1225{ 1497{
1226 if (!cctx) 1498 if (!cctx)
1227 return; 1499 return;
1228 1500
1501 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1502
1229 --cctx_count; 1503 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1504 coro_destroy (&cctx->cctx);
1231 1505
1232 /* coro_transfer creates new, empty cctx's */ 1506 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1507 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1565/** coroutine switching *****************************************************/
1292 1566
1293static void 1567static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1568transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1569{
1570 /* TODO: throwing up here is considered harmful */
1571
1296 if (expect_true (prev != next)) 1572 if (expect_true (prev != next))
1297 { 1573 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1574 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1575 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1576
1301 if (expect_false (next->flags & CF_RUNNING))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED)) 1577 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1578 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1579
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1580#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1581 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1582 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1583#endif
1311 } 1584 }
1312} 1585}
1313 1586
1314/* always use the TRANSFER macro */ 1587/* always use the TRANSFER macro */
1315static void NOINLINE 1588static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1589transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1590{
1318 dSTACKLEVEL; 1591 dSTACKLEVEL;
1319 1592
1320 /* sometimes transfer is only called to set idle_sp */ 1593 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1594 if (expect_false (!prev))
1322 { 1595 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1596 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1597 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1598 }
1326 else if (expect_true (prev != next)) 1599 else if (expect_true (prev != next))
1327 { 1600 {
1328 coro_cctx *prev__cctx; 1601 coro_cctx *cctx_prev;
1329 1602
1330 if (expect_false (prev->flags & CF_NEW)) 1603 if (expect_false (prev->flags & CF_NEW))
1331 { 1604 {
1332 /* create a new empty/source context */ 1605 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1606 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1607 prev->flags |= CF_RUNNING;
1336 } 1608 }
1337 1609
1338 prev->flags &= ~CF_RUNNING; 1610 prev->flags &= ~CF_RUNNING;
… …
1344 if (expect_false (next->flags & CF_NEW)) 1616 if (expect_false (next->flags & CF_NEW))
1345 { 1617 {
1346 /* need to start coroutine */ 1618 /* need to start coroutine */
1347 next->flags &= ~CF_NEW; 1619 next->flags &= ~CF_NEW;
1348 /* setup coroutine call */ 1620 /* setup coroutine call */
1349 coro_setup (aTHX_ next); 1621 init_perl (aTHX_ next);
1350 } 1622 }
1351 else 1623 else
1352 load_perl (aTHX_ next); 1624 load_perl (aTHX_ next);
1353 1625
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1626 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1627 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1628 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1629 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1630 && !force_cctx
1361 )) 1631 ))
1362 { 1632 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1633 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1634 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1635
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1636 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1637 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1638 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1639 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1640 next->cctx = cctx_get (aTHX);
1373 1641
1374 cctx_put (prev__cctx); 1642 cctx_put (cctx_current);
1375 } 1643 }
1644 else
1645 prev->cctx = cctx_current;
1376 1646
1377 ++next->usecount; 1647 ++next->usecount;
1378 1648
1379 if (expect_true (!next->cctx)) 1649 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1650 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1651
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1652 next->cctx = 0;
1383 transfer_next = next;
1384 1653
1385 if (expect_false (prev__cctx != next->cctx)) 1654 if (expect_false (cctx_prev != cctx_current))
1386 { 1655 {
1387 prev__cctx->top_env = PL_top_env; 1656 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1657 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1658 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1659 }
1391 1660
1392 transfer_tail (aTHX); 1661 transfer_tail (aTHX);
1393 } 1662 }
1394} 1663}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1671coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1672{
1404 if (coro->flags & CF_DESTROYED) 1673 if (coro->flags & CF_DESTROYED)
1405 return 0; 1674 return 0;
1406 1675
1407 if (coro->on_destroy) 1676 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1677 coro->on_destroy (aTHX_ coro);
1409 1678
1410 coro->flags |= CF_DESTROYED; 1679 coro->flags |= CF_DESTROYED;
1411 1680
1412 if (coro->flags & CF_READY) 1681 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1685 --coro_nready;
1417 } 1686 }
1418 else 1687 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1688 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1689
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1690 if (coro->mainstack
1422 { 1691 && coro->mainstack != main_mainstack
1423 struct coro temp; 1692 && coro->slot
1424 1693 && !PL_dirty)
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1694 destroy_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439 1695
1440 if (coro->next) coro->next->prev = coro->prev; 1696 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1697 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1698 if (coro == coro_first) coro_first = coro->next;
1699
1700 cctx_destroy (coro->cctx);
1701 SvREFCNT_dec (coro->startcv);
1702 SvREFCNT_dec (coro->args);
1703 SvREFCNT_dec (coro->swap_sv);
1704 SvREFCNT_dec (CORO_THROW);
1443 1705
1444 return 1; 1706 return 1;
1445} 1707}
1446 1708
1447static int 1709static int
… …
1502/** Coro ********************************************************************/ 1764/** Coro ********************************************************************/
1503 1765
1504INLINE void 1766INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1767coro_enq (pTHX_ struct coro *coro)
1506{ 1768{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1769 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1770
1510INLINE SV * 1771 SvREFCNT_inc_NN (coro->hv);
1772
1773 coro->next_ready = 0;
1774 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1775 ready [1] = coro;
1776}
1777
1778INLINE struct coro *
1511coro_deq (pTHX) 1779coro_deq (pTHX)
1512{ 1780{
1513 int prio; 1781 int prio;
1514 1782
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1783 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1784 {
1517 return av_shift (coro_ready [prio]); 1785 struct coro **ready = coro_ready [prio];
1786
1787 if (ready [0])
1788 {
1789 struct coro *coro = ready [0];
1790 ready [0] = coro->next_ready;
1791 return coro;
1792 }
1793 }
1518 1794
1519 return 0; 1795 return 0;
1796}
1797
1798static void
1799invoke_sv_ready_hook_helper (void)
1800{
1801 dTHX;
1802 dSP;
1803
1804 ENTER;
1805 SAVETMPS;
1806
1807 PUSHMARK (SP);
1808 PUTBACK;
1809 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1810
1811 FREETMPS;
1812 LEAVE;
1520} 1813}
1521 1814
1522static int 1815static int
1523api_ready (pTHX_ SV *coro_sv) 1816api_ready (pTHX_ SV *coro_sv)
1524{ 1817{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1818 struct coro *coro = SvSTATE (coro_sv);
1533 1819
1534 if (coro->flags & CF_READY) 1820 if (coro->flags & CF_READY)
1535 return 0; 1821 return 0;
1536 1822
1537 coro->flags |= CF_READY; 1823 coro->flags |= CF_READY;
1538 1824
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1825 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1826
1545 if (sv_hook) 1827 if (!coro_nready++)
1546 { 1828 if (coroapi.readyhook)
1547 dSP; 1829 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1563 1830
1564 return 1; 1831 return 1;
1565} 1832}
1566 1833
1567static int 1834static int
1568api_is_ready (pTHX_ SV *coro_sv) 1835api_is_ready (pTHX_ SV *coro_sv)
1569{ 1836{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1837 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1838}
1572 1839
1840/* expects to own a reference to next->hv */
1573INLINE void 1841INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1842prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1843{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1844 SV *prev_sv = SvRV (coro_current);
1845
1616 ta->prev = SvSTATE_hv (prev_sv); 1846 ta->prev = SvSTATE_hv (prev_sv);
1847 ta->next = next;
1848
1617 TRANSFER_CHECK (*ta); 1849 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1850
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1851 SvRV_set (coro_current, (SV *)next->hv);
1621 1852
1622 free_coro_mortal (aTHX); 1853 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1854 coro_mortal = prev_sv;
1624} 1855}
1625 1856
1857static void
1858prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1859{
1860 for (;;)
1861 {
1862 struct coro *next = coro_deq (aTHX);
1863
1864 if (expect_true (next))
1865 {
1866 /* cannot transfer to destroyed coros, skip and look for next */
1867 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1868 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1869 else
1870 {
1871 next->flags &= ~CF_READY;
1872 --coro_nready;
1873
1874 prepare_schedule_to (aTHX_ ta, next);
1875 break;
1876 }
1877 }
1878 else
1879 {
1880 /* nothing to schedule: call the idle handler */
1881 if (SvROK (sv_idle)
1882 && SvOBJECT (SvRV (sv_idle)))
1883 {
1884 if (SvRV (sv_idle) == SvRV (coro_current))
1885 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1886
1887 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1888 api_ready (aTHX_ SvRV (sv_idle));
1889 --coro_nready;
1890 }
1891 else
1892 {
1893 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1894 dSP;
1895
1896 ENTER;
1897 SAVETMPS;
1898
1899 PUSHMARK (SP);
1900 PUTBACK;
1901 call_sv (sv_idle, G_VOID | G_DISCARD);
1902
1903 FREETMPS;
1904 LEAVE;
1905 }
1906 }
1907 }
1908}
1909
1626INLINE void 1910INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1911prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1912{
1629 api_ready (aTHX_ coro_current); 1913 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1914 prepare_schedule (aTHX_ ta);
… …
1649{ 1933{
1650 struct coro_transfer_args ta; 1934 struct coro_transfer_args ta;
1651 1935
1652 prepare_schedule (aTHX_ &ta); 1936 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1937 TRANSFER (ta, 1);
1938}
1939
1940static void
1941api_schedule_to (pTHX_ SV *coro_sv)
1942{
1943 struct coro_transfer_args ta;
1944 struct coro *next = SvSTATE (coro_sv);
1945
1946 SvREFCNT_inc_NN (coro_sv);
1947 prepare_schedule_to (aTHX_ &ta, next);
1654} 1948}
1655 1949
1656static int 1950static int
1657api_cede (pTHX) 1951api_cede (pTHX)
1658{ 1952{
… …
1687static void 1981static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1982api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1983{
1690 struct coro *coro = SvSTATE (coro_sv); 1984 struct coro *coro = SvSTATE (coro_sv);
1691 1985
1986 if (coro->flags & CF_RUNNING)
1987 croak ("cannot enable tracing on a running coroutine, caught");
1988
1692 if (flags & CC_TRACE) 1989 if (flags & CC_TRACE)
1693 { 1990 {
1694 if (!coro->cctx) 1991 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1992 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1993 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1994 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1995
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1996 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1997 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1998 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1999 {
… …
1705 if (coro->flags & CF_RUNNING) 2002 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 2003 PL_runops = RUNOPS_DEFAULT;
1707 else 2004 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 2005 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 2006 }
2007}
2008
2009static void
2010coro_call_on_destroy (pTHX_ struct coro *coro)
2011{
2012 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2013 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2014
2015 if (on_destroyp)
2016 {
2017 AV *on_destroy = (AV *)SvRV (*on_destroyp);
2018
2019 while (AvFILLp (on_destroy) >= 0)
2020 {
2021 dSP; /* don't disturb outer sp */
2022 SV *cb = av_pop (on_destroy);
2023
2024 PUSHMARK (SP);
2025
2026 if (statusp)
2027 {
2028 int i;
2029 AV *status = (AV *)SvRV (*statusp);
2030 EXTEND (SP, AvFILLp (status) + 1);
2031
2032 for (i = 0; i <= AvFILLp (status); ++i)
2033 PUSHs (AvARRAY (status)[i]);
2034 }
2035
2036 PUTBACK;
2037 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2038 }
2039 }
2040}
2041
2042static void
2043slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2044{
2045 int i;
2046 HV *hv = (HV *)SvRV (coro_current);
2047 AV *av = newAV ();
2048
2049 /* items are actually not so common, so optimise for this case */
2050 if (items)
2051 {
2052 av_extend (av, items - 1);
2053
2054 for (i = 0; i < items; ++i)
2055 av_push (av, SvREFCNT_inc_NN (arg [i]));
2056 }
2057
2058 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2059
2060 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2061 api_ready (aTHX_ sv_manager);
2062
2063 frame->prepare = prepare_schedule;
2064 frame->check = slf_check_repeat;
2065
2066 /* as a minor optimisation, we could unwind all stacks here */
2067 /* but that puts extra pressure on pp_slf, and is not worth much */
2068 /*coro_unwind_stacks (aTHX);*/
2069}
2070
2071/*****************************************************************************/
2072/* async pool handler */
2073
2074static int
2075slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2076{
2077 HV *hv = (HV *)SvRV (coro_current);
2078 struct coro *coro = (struct coro *)frame->data;
2079
2080 if (!coro->invoke_cb)
2081 return 1; /* loop till we have invoke */
2082 else
2083 {
2084 hv_store (hv, "desc", sizeof ("desc") - 1,
2085 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2086
2087 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2088
2089 {
2090 dSP;
2091 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2092 PUTBACK;
2093 }
2094
2095 SvREFCNT_dec (GvAV (PL_defgv));
2096 GvAV (PL_defgv) = coro->invoke_av;
2097 coro->invoke_av = 0;
2098
2099 return 0;
2100 }
2101}
2102
2103static void
2104slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2105{
2106 HV *hv = (HV *)SvRV (coro_current);
2107 struct coro *coro = SvSTATE_hv ((SV *)hv);
2108
2109 if (expect_true (coro->saved_deffh))
2110 {
2111 /* subsequent iteration */
2112 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2113 coro->saved_deffh = 0;
2114
2115 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2116 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2117 {
2118 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2119 coro->invoke_av = newAV ();
2120
2121 frame->prepare = prepare_nop;
2122 }
2123 else
2124 {
2125 av_clear (GvAV (PL_defgv));
2126 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2127
2128 coro->prio = 0;
2129
2130 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2131 api_trace (aTHX_ coro_current, 0);
2132
2133 frame->prepare = prepare_schedule;
2134 av_push (av_async_pool, SvREFCNT_inc (hv));
2135 }
2136 }
2137 else
2138 {
2139 /* first iteration, simply fall through */
2140 frame->prepare = prepare_nop;
2141 }
2142
2143 frame->check = slf_check_pool_handler;
2144 frame->data = (void *)coro;
2145}
2146
2147/*****************************************************************************/
2148/* rouse callback */
2149
2150#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2151
2152static void
2153coro_rouse_callback (pTHX_ CV *cv)
2154{
2155 dXSARGS;
2156 SV *data = (SV *)S_GENSUB_ARG;
2157
2158 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2159 {
2160 /* first call, set args */
2161 SV *coro = SvRV (data);
2162 AV *av = newAV ();
2163
2164 SvRV_set (data, (SV *)av);
2165
2166 /* better take a full copy of the arguments */
2167 while (items--)
2168 av_store (av, items, newSVsv (ST (items)));
2169
2170 api_ready (aTHX_ coro);
2171 SvREFCNT_dec (coro);
2172 }
2173
2174 XSRETURN_EMPTY;
2175}
2176
2177static int
2178slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2179{
2180 SV *data = (SV *)frame->data;
2181
2182 if (CORO_THROW)
2183 return 0;
2184
2185 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2186 return 1;
2187
2188 /* now push all results on the stack */
2189 {
2190 dSP;
2191 AV *av = (AV *)SvRV (data);
2192 int i;
2193
2194 EXTEND (SP, AvFILLp (av) + 1);
2195 for (i = 0; i <= AvFILLp (av); ++i)
2196 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2197
2198 /* we have stolen the elements, so set length to zero and free */
2199 AvFILLp (av) = -1;
2200 av_undef (av);
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 SV *cb;
2212
2213 if (items)
2214 cb = arg [0];
2215 else
2216 {
2217 struct coro *coro = SvSTATE_current;
2218
2219 if (!coro->rouse_cb)
2220 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2221
2222 cb = sv_2mortal (coro->rouse_cb);
2223 coro->rouse_cb = 0;
2224 }
2225
2226 if (!SvROK (cb)
2227 || SvTYPE (SvRV (cb)) != SVt_PVCV
2228 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2229 croak ("Coro::rouse_wait called with illegal callback argument,");
2230
2231 {
2232 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2233 SV *data = (SV *)S_GENSUB_ARG;
2234
2235 frame->data = (void *)data;
2236 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2237 frame->check = slf_check_rouse_wait;
2238 }
2239}
2240
2241static SV *
2242coro_new_rouse_cb (pTHX)
2243{
2244 HV *hv = (HV *)SvRV (coro_current);
2245 struct coro *coro = SvSTATE_hv (hv);
2246 SV *data = newRV_inc ((SV *)hv);
2247 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2248
2249 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2250 SvREFCNT_dec (data); /* magicext increases the refcount */
2251
2252 SvREFCNT_dec (coro->rouse_cb);
2253 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2254
2255 return cb;
2256}
2257
2258/*****************************************************************************/
2259/* schedule-like-function opcode (SLF) */
2260
2261static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2262static const CV *slf_cv;
2263static SV **slf_argv;
2264static int slf_argc, slf_arga; /* count, allocated */
2265static I32 slf_ax; /* top of stack, for restore */
2266
2267/* this restores the stack in the case we patched the entersub, to */
2268/* recreate the stack frame as perl will on following calls */
2269/* since entersub cleared the stack */
2270static OP *
2271pp_restore (pTHX)
2272{
2273 int i;
2274 SV **SP = PL_stack_base + slf_ax;
2275
2276 PUSHMARK (SP);
2277
2278 EXTEND (SP, slf_argc + 1);
2279
2280 for (i = 0; i < slf_argc; ++i)
2281 PUSHs (sv_2mortal (slf_argv [i]));
2282
2283 PUSHs ((SV *)CvGV (slf_cv));
2284
2285 RETURNOP (slf_restore.op_first);
2286}
2287
2288static void
2289slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2290{
2291 SV **arg = (SV **)slf_frame.data;
2292
2293 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2294}
2295
2296static void
2297slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 if (items != 2)
2300 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2301
2302 frame->prepare = slf_prepare_transfer;
2303 frame->check = slf_check_nop;
2304 frame->data = (void *)arg; /* let's hope it will stay valid */
2305}
2306
2307static void
2308slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2309{
2310 frame->prepare = prepare_schedule;
2311 frame->check = slf_check_nop;
2312}
2313
2314static void
2315slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2316{
2317 struct coro *next = (struct coro *)slf_frame.data;
2318
2319 SvREFCNT_inc_NN (next->hv);
2320 prepare_schedule_to (aTHX_ ta, next);
2321}
2322
2323static void
2324slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2325{
2326 if (!items)
2327 croak ("Coro::schedule_to expects a coroutine argument, caught");
2328
2329 frame->data = (void *)SvSTATE (arg [0]);
2330 frame->prepare = slf_prepare_schedule_to;
2331 frame->check = slf_check_nop;
2332}
2333
2334static void
2335slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2336{
2337 api_ready (aTHX_ SvRV (coro_current));
2338
2339 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2340}
2341
2342static void
2343slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2344{
2345 frame->prepare = prepare_cede;
2346 frame->check = slf_check_nop;
2347}
2348
2349static void
2350slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2351{
2352 frame->prepare = prepare_cede_notself;
2353 frame->check = slf_check_nop;
2354}
2355
2356/*
2357 * these not obviously related functions are all rolled into one
2358 * function to increase chances that they all will call transfer with the same
2359 * stack offset
2360 * SLF stands for "schedule-like-function".
2361 */
2362static OP *
2363pp_slf (pTHX)
2364{
2365 I32 checkmark; /* mark SP to see how many elements check has pushed */
2366
2367 /* set up the slf frame, unless it has already been set-up */
2368 /* the latter happens when a new coro has been started */
2369 /* or when a new cctx was attached to an existing coroutine */
2370 if (expect_true (!slf_frame.prepare))
2371 {
2372 /* first iteration */
2373 dSP;
2374 SV **arg = PL_stack_base + TOPMARK + 1;
2375 int items = SP - arg; /* args without function object */
2376 SV *gv = *sp;
2377
2378 /* do a quick consistency check on the "function" object, and if it isn't */
2379 /* for us, divert to the real entersub */
2380 if (SvTYPE (gv) != SVt_PVGV
2381 || !GvCV (gv)
2382 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2383 return PL_ppaddr[OP_ENTERSUB](aTHX);
2384
2385 if (!(PL_op->op_flags & OPf_STACKED))
2386 {
2387 /* ampersand-form of call, use @_ instead of stack */
2388 AV *av = GvAV (PL_defgv);
2389 arg = AvARRAY (av);
2390 items = AvFILLp (av) + 1;
2391 }
2392
2393 /* now call the init function, which needs to set up slf_frame */
2394 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2395 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2396
2397 /* pop args */
2398 SP = PL_stack_base + POPMARK;
2399
2400 PUTBACK;
2401 }
2402
2403 /* now that we have a slf_frame, interpret it! */
2404 /* we use a callback system not to make the code needlessly */
2405 /* complicated, but so we can run multiple perl coros from one cctx */
2406
2407 do
2408 {
2409 struct coro_transfer_args ta;
2410
2411 slf_frame.prepare (aTHX_ &ta);
2412 TRANSFER (ta, 0);
2413
2414 checkmark = PL_stack_sp - PL_stack_base;
2415 }
2416 while (slf_frame.check (aTHX_ &slf_frame));
2417
2418 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2419
2420 /* exception handling */
2421 if (expect_false (CORO_THROW))
2422 {
2423 SV *exception = sv_2mortal (CORO_THROW);
2424
2425 CORO_THROW = 0;
2426 sv_setsv (ERRSV, exception);
2427 croak (0);
2428 }
2429
2430 /* return value handling - mostly like entersub */
2431 /* make sure we put something on the stack in scalar context */
2432 if (GIMME_V == G_SCALAR)
2433 {
2434 dSP;
2435 SV **bot = PL_stack_base + checkmark;
2436
2437 if (sp == bot) /* too few, push undef */
2438 bot [1] = &PL_sv_undef;
2439 else if (sp != bot + 1) /* too many, take last one */
2440 bot [1] = *sp;
2441
2442 SP = bot + 1;
2443
2444 PUTBACK;
2445 }
2446
2447 return NORMAL;
2448}
2449
2450static void
2451api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2452{
2453 int i;
2454 SV **arg = PL_stack_base + ax;
2455 int items = PL_stack_sp - arg + 1;
2456
2457 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2458
2459 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2460 && PL_op->op_ppaddr != pp_slf)
2461 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2462
2463 CvFLAGS (cv) |= CVf_SLF;
2464 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2465 slf_cv = cv;
2466
2467 /* we patch the op, and then re-run the whole call */
2468 /* we have to put the same argument on the stack for this to work */
2469 /* and this will be done by pp_restore */
2470 slf_restore.op_next = (OP *)&slf_restore;
2471 slf_restore.op_type = OP_CUSTOM;
2472 slf_restore.op_ppaddr = pp_restore;
2473 slf_restore.op_first = PL_op;
2474
2475 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2476
2477 if (PL_op->op_flags & OPf_STACKED)
2478 {
2479 if (items > slf_arga)
2480 {
2481 slf_arga = items;
2482 Safefree (slf_argv);
2483 New (0, slf_argv, slf_arga, SV *);
2484 }
2485
2486 slf_argc = items;
2487
2488 for (i = 0; i < items; ++i)
2489 slf_argv [i] = SvREFCNT_inc (arg [i]);
2490 }
2491 else
2492 slf_argc = 0;
2493
2494 PL_op->op_ppaddr = pp_slf;
2495 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2496
2497 PL_op = (OP *)&slf_restore;
2498}
2499
2500/*****************************************************************************/
2501/* dynamic wind */
2502
2503static void
2504on_enterleave_call (pTHX_ SV *cb)
2505{
2506 dSP;
2507
2508 PUSHSTACK;
2509
2510 PUSHMARK (SP);
2511 PUTBACK;
2512 call_sv (cb, G_VOID | G_DISCARD);
2513 SPAGAIN;
2514
2515 POPSTACK;
2516}
2517
2518static SV *
2519coro_avp_pop_and_free (pTHX_ AV **avp)
2520{
2521 AV *av = *avp;
2522 SV *res = av_pop (av);
2523
2524 if (AvFILLp (av) < 0)
2525 {
2526 *avp = 0;
2527 SvREFCNT_dec (av);
2528 }
2529
2530 return res;
2531}
2532
2533static void
2534coro_pop_on_enter (pTHX_ void *coro)
2535{
2536 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2537 SvREFCNT_dec (cb);
2538}
2539
2540static void
2541coro_pop_on_leave (pTHX_ void *coro)
2542{
2543 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2544 on_enterleave_call (aTHX_ sv_2mortal (cb));
1710} 2545}
1711 2546
1712/*****************************************************************************/ 2547/*****************************************************************************/
1713/* PerlIO::cede */ 2548/* PerlIO::cede */
1714 2549
… …
1783 PerlIOBuf_get_cnt, 2618 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2619 PerlIOBuf_set_ptrcnt,
1785}; 2620};
1786 2621
1787/*****************************************************************************/ 2622/*****************************************************************************/
2623/* Coro::Semaphore & Coro::Signal */
1788 2624
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2625static SV *
1800pp_restore (pTHX) 2626coro_waitarray_new (pTHX_ int count)
1801{ 2627{
1802 dSP; 2628 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2629 AV *av = newAV ();
2630 SV **ary;
1803 2631
1804 PUSHMARK (SP); 2632 /* unfortunately, building manually saves memory */
2633 Newx (ary, 2, SV *);
2634 AvALLOC (av) = ary;
2635#if PERL_VERSION_ATLEAST (5,10,0)
2636 AvARRAY (av) = ary;
2637#else
2638 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2639 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2640 SvPVX ((SV *)av) = (char *)ary;
2641#endif
2642 AvMAX (av) = 1;
2643 AvFILLp (av) = 0;
2644 ary [0] = newSViv (count);
1805 2645
1806 EXTEND (SP, 3); 2646 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2647}
1814 2648
1815static void 2649/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820 2650
1821static void 2651static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust) 2652coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2653{
1994 SV *count_sv = AvARRAY (av)[0]; 2654 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2655 IV count = SvIVX (count_sv);
1996 2656
1997 count += adjust; 2657 count += adjust;
1998 SvIVX (count_sv) = count; 2658 SvIVX (count_sv) = count;
1999 2659
2000 /* now wake up as many waiters as possible */ 2660 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2661 while (count > 0 && AvFILLp (av) > 0)
2002 { 2662 {
2003 SV *cb; 2663 SV *cb;
2004 2664
2005 /* swap first two elements so we can shift a waiter */ 2665 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2666 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2667 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2668 cb = av_shift (av);
2009 2669
2010 if (SvOBJECT (cb)) 2670 if (SvOBJECT (cb))
2671 {
2011 api_ready (aTHX_ cb); 2672 api_ready (aTHX_ cb);
2012 else 2673 --count;
2013 croak ("callbacks not yet supported"); 2674 }
2675 else if (SvTYPE (cb) == SVt_PVCV)
2676 {
2677 dSP;
2678 PUSHMARK (SP);
2679 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2680 PUTBACK;
2681 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2682 }
2014 2683
2015 SvREFCNT_dec (cb); 2684 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2685 }
2019} 2686}
2020 2687
2021static void 2688static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2689coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{ 2690{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2691 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2692 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2693}
2027 2694
2028static int 2695static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2696slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2697{
2031 AV *av = (AV *)frame->data; 2698 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2699 SV *count_sv = AvARRAY (av)[0];
2033 2700
2701 /* if we are about to throw, don't actually acquire the lock, just throw */
2702 if (CORO_THROW)
2703 return 0;
2034 if (SvIVX (count_sv) > 0) 2704 else if (SvIVX (count_sv) > 0)
2035 { 2705 {
2036 SvSTATE_current->on_destroy = 0; 2706 SvSTATE_current->on_destroy = 0;
2707
2708 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2709 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2710 else
2711 coro_semaphore_adjust (aTHX_ av, 0);
2712
2038 return 0; 2713 return 0;
2039 } 2714 }
2040 else 2715 else
2041 { 2716 {
2042 int i; 2717 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2726 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2727 return 1;
2053 } 2728 }
2054} 2729}
2055 2730
2056static void 2731static int
2732slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2733{
2734 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2735}
2736
2737static int
2738slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2739{
2740 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2741}
2742
2743static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2744slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2745{
2059 AV *av = (AV *)SvRV (arg [0]); 2746 AV *av = (AV *)SvRV (arg [0]);
2060 2747
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2748 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2749 {
… …
2072 2759
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2760 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2761 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2762 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 } 2763 }
2764}
2077 2765
2766static void
2767slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2768{
2769 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078 frame->check = slf_check_semaphore_down; 2770 frame->check = slf_check_semaphore_down;
2771}
2079 2772
2773static void
2774slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2775{
2776 if (items >= 2)
2777 {
2778 /* callback form */
2779 AV *av = (AV *)SvRV (arg [0]);
2780 SV *cb_cv = s_get_cv_croak (arg [1]);
2781
2782 av_push (av, SvREFCNT_inc_NN (cb_cv));
2783
2784 if (SvIVX (AvARRAY (av)[0]) > 0)
2785 coro_semaphore_adjust (aTHX_ av, 0);
2786
2787 frame->prepare = prepare_nop;
2788 frame->check = slf_check_nop;
2789 }
2790 else
2791 {
2792 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2793 frame->check = slf_check_semaphore_wait;
2794 }
2795}
2796
2797/* signal */
2798
2799static void
2800coro_signal_wake (pTHX_ AV *av, int count)
2801{
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803
2804 /* now signal count waiters */
2805 while (count > 0 && AvFILLp (av) > 0)
2806 {
2807 SV *cb;
2808
2809 /* swap first two elements so we can shift a waiter */
2810 cb = AvARRAY (av)[0];
2811 AvARRAY (av)[0] = AvARRAY (av)[1];
2812 AvARRAY (av)[1] = cb;
2813
2814 cb = av_shift (av);
2815
2816 if (SvTYPE (cb) == SVt_PVCV)
2817 {
2818 dSP;
2819 PUSHMARK (SP);
2820 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2821 PUTBACK;
2822 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2823 }
2824 else
2825 {
2826 api_ready (aTHX_ cb);
2827 sv_setiv (cb, 0); /* signal waiter */
2828 }
2829
2830 SvREFCNT_dec (cb);
2831
2832 --count;
2833 }
2834}
2835
2836static int
2837slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2838{
2839 /* if we are about to throw, also stop waiting */
2840 return SvROK ((SV *)frame->data) && !CORO_THROW;
2841}
2842
2843static void
2844slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2845{
2846 AV *av = (AV *)SvRV (arg [0]);
2847
2848 if (items >= 2)
2849 {
2850 SV *cb_cv = s_get_cv_croak (arg [1]);
2851 av_push (av, SvREFCNT_inc_NN (cb_cv));
2852
2853 if (SvIVX (AvARRAY (av)[0]))
2854 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2855
2856 frame->prepare = prepare_nop;
2857 frame->check = slf_check_nop;
2858 }
2859 else if (SvIVX (AvARRAY (av)[0]))
2860 {
2861 SvIVX (AvARRAY (av)[0]) = 0;
2862 frame->prepare = prepare_nop;
2863 frame->check = slf_check_nop;
2864 }
2865 else
2866 {
2867 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2868
2869 av_push (av, waiter);
2870
2871 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2872 frame->prepare = prepare_schedule;
2873 frame->check = slf_check_signal_wait;
2874 }
2080} 2875}
2081 2876
2082/*****************************************************************************/ 2877/*****************************************************************************/
2878/* Coro::AIO */
2083 2879
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2880#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 2881
2086/* create a closure from XS, returns a code reference */ 2882/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 2883struct io_state
2088/* the callback must use dXSARGS/XSRETURN */ 2884{
2885 int errorno;
2886 I32 laststype; /* U16 in 5.10.0 */
2887 int laststatval;
2888 Stat_t statcache;
2889};
2890
2891static void
2892coro_aio_callback (pTHX_ CV *cv)
2893{
2894 dXSARGS;
2895 AV *state = (AV *)S_GENSUB_ARG;
2896 SV *coro = av_pop (state);
2897 SV *data_sv = newSV (sizeof (struct io_state));
2898
2899 av_extend (state, items - 1);
2900
2901 sv_upgrade (data_sv, SVt_PV);
2902 SvCUR_set (data_sv, sizeof (struct io_state));
2903 SvPOK_only (data_sv);
2904
2905 {
2906 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2907
2908 data->errorno = errno;
2909 data->laststype = PL_laststype;
2910 data->laststatval = PL_laststatval;
2911 data->statcache = PL_statcache;
2912 }
2913
2914 /* now build the result vector out of all the parameters and the data_sv */
2915 {
2916 int i;
2917
2918 for (i = 0; i < items; ++i)
2919 av_push (state, SvREFCNT_inc_NN (ST (i)));
2920 }
2921
2922 av_push (state, data_sv);
2923
2924 api_ready (aTHX_ coro);
2925 SvREFCNT_dec (coro);
2926 SvREFCNT_dec ((AV *)state);
2927}
2928
2929static int
2930slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2931{
2932 AV *state = (AV *)frame->data;
2933
2934 /* if we are about to throw, return early */
2935 /* this does not cancel the aio request, but at least */
2936 /* it quickly returns */
2937 if (CORO_THROW)
2938 return 0;
2939
2940 /* one element that is an RV? repeat! */
2941 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2942 return 1;
2943
2944 /* restore status */
2945 {
2946 SV *data_sv = av_pop (state);
2947 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2948
2949 errno = data->errorno;
2950 PL_laststype = data->laststype;
2951 PL_laststatval = data->laststatval;
2952 PL_statcache = data->statcache;
2953
2954 SvREFCNT_dec (data_sv);
2955 }
2956
2957 /* push result values */
2958 {
2959 dSP;
2960 int i;
2961
2962 EXTEND (SP, AvFILLp (state) + 1);
2963 for (i = 0; i <= AvFILLp (state); ++i)
2964 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2965
2966 PUTBACK;
2967 }
2968
2969 return 0;
2970}
2971
2972static void
2973slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2974{
2975 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2976 SV *coro_hv = SvRV (coro_current);
2977 struct coro *coro = SvSTATE_hv (coro_hv);
2978
2979 /* put our coroutine id on the state arg */
2980 av_push (state, SvREFCNT_inc_NN (coro_hv));
2981
2982 /* first see whether we have a non-zero priority and set it as AIO prio */
2983 if (coro->prio)
2984 {
2985 dSP;
2986
2987 static SV *prio_cv;
2988 static SV *prio_sv;
2989
2990 if (expect_false (!prio_cv))
2991 {
2992 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2993 prio_sv = newSViv (0);
2994 }
2995
2996 PUSHMARK (SP);
2997 sv_setiv (prio_sv, coro->prio);
2998 XPUSHs (prio_sv);
2999
3000 PUTBACK;
3001 call_sv (prio_cv, G_VOID | G_DISCARD);
3002 }
3003
3004 /* now call the original request */
3005 {
3006 dSP;
3007 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3008 int i;
3009
3010 PUSHMARK (SP);
3011
3012 /* first push all args to the stack */
3013 EXTEND (SP, items + 1);
3014
3015 for (i = 0; i < items; ++i)
3016 PUSHs (arg [i]);
3017
3018 /* now push the callback closure */
3019 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3020
3021 /* now call the AIO function - we assume our request is uncancelable */
3022 PUTBACK;
3023 call_sv ((SV *)req, G_VOID | G_DISCARD);
3024 }
3025
3026 /* now that the request is going, we loop till we have a result */
3027 frame->data = (void *)state;
3028 frame->prepare = prepare_schedule;
3029 frame->check = slf_check_aio_req;
3030}
3031
3032static void
3033coro_aio_req_xs (pTHX_ CV *cv)
3034{
3035 dXSARGS;
3036
3037 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3038
3039 XSRETURN_EMPTY;
3040}
3041
3042/*****************************************************************************/
3043
3044#if CORO_CLONE
3045# include "clone.c"
3046#endif
3047
3048/*****************************************************************************/
3049
2089static SV * 3050static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3051coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2091{ 3052{
2092 CV *cv = (CV *)NEWSV (0, 0); 3053 SV *coro_sv;
3054 struct coro *coro;
3055 MAGIC *mg;
3056 HV *hv;
3057 SV *cb;
3058 int i;
2093 3059
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 3060 if (argc > 0)
3061 {
3062 cb = s_get_cv_croak (argv [0]);
2095 3063
2096 CvANON_on (cv); 3064 if (!is_coro)
2097 CvISXSUB_on (cv); 3065 {
2098 CvXSUB (cv) = xsub; 3066 if (CvISXSUB (cb))
2099 GENSUB_ARG = arg; 3067 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2100 3068
2101 return newRV_noinc ((SV *)cv); 3069 if (!CvROOT (cb))
2102} 3070 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3071 }
3072 }
2103 3073
2104/*****************************************************************************/ 3074 Newz (0, coro, 1, struct coro);
3075 coro->args = newAV ();
3076 coro->flags = CF_NEW;
3077
3078 if (coro_first) coro_first->prev = coro;
3079 coro->next = coro_first;
3080 coro_first = coro;
3081
3082 coro->hv = hv = newHV ();
3083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3084 mg->mg_flags |= MGf_DUP;
3085 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3086
3087 if (argc > 0)
3088 {
3089 av_extend (coro->args, argc + is_coro - 1);
3090
3091 if (is_coro)
3092 {
3093 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3094 cb = (SV *)cv_coro_run;
3095 }
3096
3097 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3098
3099 for (i = 1; i < argc; i++)
3100 av_push (coro->args, newSVsv (argv [i]));
3101 }
3102
3103 return coro_sv;
3104}
2105 3105
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 3107
2108PROTOTYPES: DISABLE 3108PROTOTYPES: DISABLE
2109 3109
… …
2114 coro_thx = PERL_GET_CONTEXT; 3114 coro_thx = PERL_GET_CONTEXT;
2115# endif 3115# endif
2116#endif 3116#endif
2117 BOOT_PAGESIZE; 3117 BOOT_PAGESIZE;
2118 3118
3119 cctx_current = cctx_new_empty ();
3120
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 3123
2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2123 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2142 3144
2143 { 3145 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 3147
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3148 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 3149 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 3150
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3151 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 3152 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 3153 }
2154 3154
2155 coroapi.ver = CORO_API_VERSION; 3155 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 3156 coroapi.rev = CORO_API_REVISION;
2157 3157
… …
2162 coroapi.prepare_nop = prepare_nop; 3162 coroapi.prepare_nop = prepare_nop;
2163 coroapi.prepare_schedule = prepare_schedule; 3163 coroapi.prepare_schedule = prepare_schedule;
2164 coroapi.prepare_cede = prepare_cede; 3164 coroapi.prepare_cede = prepare_cede;
2165 coroapi.prepare_cede_notself = prepare_cede_notself; 3165 coroapi.prepare_cede_notself = prepare_cede_notself;
2166 3166
2167 { 3167 time_init (aTHX);
2168 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2169 3168
2170 if (!svp) croak ("Time::HiRes is required");
2171 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2172
2173 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2174 }
2175
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3169 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2177} 3170}
2178 3171
2179SV * 3172SV *
2180new (char *klass, ...) 3173new (SV *klass, ...)
3174 ALIAS:
3175 Coro::new = 1
2181 CODE: 3176 CODE:
2182{ 3177 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2183 struct coro *coro; 3178 OUTPUT:
2184 MAGIC *mg;
2185 HV *hv;
2186 int i;
2187
2188 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV ();
2190 coro->flags = CF_NEW;
2191
2192 if (coro_first) coro_first->prev = coro;
2193 coro->next = coro_first;
2194 coro_first = coro;
2195
2196 coro->hv = hv = newHV ();
2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200
2201 av_extend (coro->args, items - 1);
2202 for (i = 1; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i)));
2204}
2205 OUTPUT:
2206 RETVAL 3179 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 3180
2213void 3181void
2214transfer (...) 3182transfer (...)
2215 PROTOTYPE: $$ 3183 PROTOTYPE: $$
2216 CODE: 3184 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3185 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 3186
2219bool 3187bool
2220_destroy (SV *coro_sv) 3188_destroy (SV *coro_sv)
2221 CODE: 3189 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3190 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2226void 3194void
2227_exit (int code) 3195_exit (int code)
2228 PROTOTYPE: $ 3196 PROTOTYPE: $
2229 CODE: 3197 CODE:
2230 _exit (code); 3198 _exit (code);
3199
3200SV *
3201clone (Coro::State coro)
3202 CODE:
3203{
3204#if CORO_CLONE
3205 struct coro *ncoro = coro_clone (aTHX_ coro);
3206 MAGIC *mg;
3207 /* TODO: too much duplication */
3208 ncoro->hv = newHV ();
3209 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3210 mg->mg_flags |= MGf_DUP;
3211 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3212#else
3213 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3214#endif
3215}
3216 OUTPUT:
3217 RETVAL
2231 3218
2232int 3219int
2233cctx_stacksize (int new_stacksize = 0) 3220cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 3221 PROTOTYPE: ;$
2235 CODE: 3222 CODE:
… …
2285 eval = 1 3272 eval = 1
2286 CODE: 3273 CODE:
2287{ 3274{
2288 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3275 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2289 { 3276 {
2290 struct coro temp; 3277 struct coro *current = SvSTATE_current;
2291 3278
2292 if (!(coro->flags & CF_RUNNING)) 3279 if (current != coro)
2293 { 3280 {
2294 PUTBACK; 3281 PUTBACK;
2295 save_perl (aTHX_ &temp); 3282 save_perl (aTHX_ current);
2296 load_perl (aTHX_ coro); 3283 load_perl (aTHX_ coro);
3284 SPAGAIN;
2297 } 3285 }
2298 3286
2299 {
2300 dSP;
2301 ENTER;
2302 SAVETMPS;
2303 PUTBACK;
2304 PUSHSTACK; 3287 PUSHSTACK;
3288
2305 PUSHMARK (SP); 3289 PUSHMARK (SP);
3290 PUTBACK;
2306 3291
2307 if (ix) 3292 if (ix)
2308 eval_sv (coderef, 0); 3293 eval_sv (coderef, 0);
2309 else 3294 else
2310 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3295 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2311 3296
2312 POPSTACK; 3297 POPSTACK;
2313 SPAGAIN; 3298 SPAGAIN;
2314 FREETMPS;
2315 LEAVE;
2316 PUTBACK;
2317 }
2318 3299
2319 if (!(coro->flags & CF_RUNNING)) 3300 if (current != coro)
2320 { 3301 {
3302 PUTBACK;
2321 save_perl (aTHX_ coro); 3303 save_perl (aTHX_ coro);
2322 load_perl (aTHX_ &temp); 3304 load_perl (aTHX_ current);
2323 SPAGAIN; 3305 SPAGAIN;
2324 } 3306 }
2325 } 3307 }
2326} 3308}
2327 3309
… …
2331 ALIAS: 3313 ALIAS:
2332 is_ready = CF_READY 3314 is_ready = CF_READY
2333 is_running = CF_RUNNING 3315 is_running = CF_RUNNING
2334 is_new = CF_NEW 3316 is_new = CF_NEW
2335 is_destroyed = CF_DESTROYED 3317 is_destroyed = CF_DESTROYED
3318 is_suspended = CF_SUSPENDED
2336 CODE: 3319 CODE:
2337 RETVAL = boolSV (coro->flags & ix); 3320 RETVAL = boolSV (coro->flags & ix);
2338 OUTPUT: 3321 OUTPUT:
2339 RETVAL 3322 RETVAL
2340 3323
2341void 3324void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3325throw (Coro::State self, SV *exception = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3326 PROTOTYPE: $;$
2344 CODE: 3327 CODE:
3328{
3329 struct coro *current = SvSTATE_current;
3330 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2345 SvREFCNT_dec (self->throw); 3331 SvREFCNT_dec (*exceptionp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3332 SvGETMAGIC (exception);
3333 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3334}
2347 3335
2348void 3336void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3338 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3339 C_ARGS: aTHX_ coro, flags
2352 3340
2353SV * 3341SV *
2354has_cctx (Coro::State coro) 3342has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3343 PROTOTYPE: $
2356 CODE: 3344 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3345 /* maybe manage the running flag differently */
3346 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3347 OUTPUT:
2359 RETVAL 3348 RETVAL
2360 3349
2361int 3350int
2362is_traced (Coro::State coro) 3351is_traced (Coro::State coro)
… …
2382 3371
2383void 3372void
2384force_cctx () 3373force_cctx ()
2385 PROTOTYPE: 3374 PROTOTYPE:
2386 CODE: 3375 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3376 cctx_current->idle_sp = 0;
2388 3377
2389void 3378void
2390swap_defsv (Coro::State self) 3379swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3380 PROTOTYPE: $
2392 ALIAS: 3381 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3390
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3391 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3392 }
2404 3393
3394void
3395cancel (Coro::State self)
3396 CODE:
3397 coro_state_destroy (aTHX_ self);
3398 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3399
3400
3401SV *
3402enable_times (int enabled = enable_times)
3403 CODE:
3404{
3405 RETVAL = boolSV (enable_times);
3406
3407 if (enabled != enable_times)
3408 {
3409 enable_times = enabled;
3410
3411 coro_times_update ();
3412 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3413 }
3414}
3415 OUTPUT:
3416 RETVAL
3417
3418void
3419times (Coro::State self)
3420 PPCODE:
3421{
3422 struct coro *current = SvSTATE (coro_current);
3423
3424 if (expect_false (current == self))
3425 {
3426 coro_times_update ();
3427 coro_times_add (SvSTATE (coro_current));
3428 }
3429
3430 EXTEND (SP, 2);
3431 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3432 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3433
3434 if (expect_false (current == self))
3435 coro_times_sub (SvSTATE (coro_current));
3436}
3437
3438void
3439swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3440 CODE:
3441{
3442 struct coro *current = SvSTATE_current;
3443
3444 if (current == coro)
3445 SWAP_SVS (current);
3446
3447 if (!coro->swap_sv)
3448 coro->swap_sv = newAV ();
3449
3450 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3451 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3452
3453 if (current == coro)
3454 SWAP_SVS (current);
3455}
3456
3457
2405MODULE = Coro::State PACKAGE = Coro 3458MODULE = Coro::State PACKAGE = Coro
2406 3459
2407BOOT: 3460BOOT:
2408{ 3461{
2409 int i;
2410
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3462 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3463 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3464 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3465 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3466 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 SvREADONLY_on (coro_current); 3467 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3468 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3469 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3470 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2417 3471
3472 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3473 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3474 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3475 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3476
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3477 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3478
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3479 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3480 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2422 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3481 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2423 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3482 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2424 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3483 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2425 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3484 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2426
2427 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2428 coro_ready[i] = newAV ();
2429 3485
2430 { 3486 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3487 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3488
2433 coroapi.schedule = api_schedule; 3489 coroapi.schedule = api_schedule;
3490 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3491 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3492 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3493 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3494 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3495 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3496 coroapi.current = coro_current;
2440 3497
2441 GCoroAPI = &coroapi; 3498 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3499 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3500 SvREADONLY_on (sv);
2444 } 3501 }
2445} 3502}
2446 3503
3504SV *
3505async (...)
3506 PROTOTYPE: &@
3507 CODE:
3508 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3509 api_ready (aTHX_ RETVAL);
3510 OUTPUT:
3511 RETVAL
3512
3513void
3514terminate (...)
3515 CODE:
3516 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3517
2447void 3518void
2448schedule (...) 3519schedule (...)
2449 CODE: 3520 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3521 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3522
3523void
3524schedule_to (...)
3525 CODE:
3526 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3527
3528void
3529cede_to (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2451 3532
2452void 3533void
2453cede (...) 3534cede (...)
2454 CODE: 3535 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3536 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3537
2457void 3538void
2458cede_notself (...) 3539cede_notself (...)
2459 CODE: 3540 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3541 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2461 3542
2462void 3543void
2463_set_current (SV *current) 3544_set_current (SV *current)
2464 PROTOTYPE: $ 3545 PROTOTYPE: $
2465 CODE: 3546 CODE:
… …
2469void 3550void
2470_set_readyhook (SV *hook) 3551_set_readyhook (SV *hook)
2471 PROTOTYPE: $ 3552 PROTOTYPE: $
2472 CODE: 3553 CODE:
2473 SvREFCNT_dec (coro_readyhook); 3554 SvREFCNT_dec (coro_readyhook);
3555 SvGETMAGIC (hook);
3556 if (SvOK (hook))
3557 {
2474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3558 coro_readyhook = newSVsv (hook);
3559 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3560 }
3561 else
3562 {
3563 coro_readyhook = 0;
3564 CORO_READYHOOK = 0;
3565 }
2475 3566
2476int 3567int
2477prio (Coro::State coro, int newprio = 0) 3568prio (Coro::State coro, int newprio = 0)
2478 PROTOTYPE: $;$ 3569 PROTOTYPE: $;$
2479 ALIAS: 3570 ALIAS:
… …
2485 if (items > 1) 3576 if (items > 1)
2486 { 3577 {
2487 if (ix) 3578 if (ix)
2488 newprio = coro->prio - newprio; 3579 newprio = coro->prio - newprio;
2489 3580
2490 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3581 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2491 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3582 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2492 3583
2493 coro->prio = newprio; 3584 coro->prio = newprio;
2494 } 3585 }
2495} 3586}
2496 OUTPUT: 3587 OUTPUT:
… …
2510 CODE: 3601 CODE:
2511 RETVAL = coro_nready; 3602 RETVAL = coro_nready;
2512 OUTPUT: 3603 OUTPUT:
2513 RETVAL 3604 RETVAL
2514 3605
2515# for async_pool speedup
2516void 3606void
2517_pool_1 (SV *cb) 3607suspend (Coro::State self)
3608 PROTOTYPE: $
2518 CODE: 3609 CODE:
2519{ 3610 self->flags |= CF_SUSPENDED;
2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
2522 AV *defav = GvAV (PL_defgv);
2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524 AV *invoke_av;
2525 int i, len;
2526 3611
2527 if (!invoke) 3612void
3613resume (Coro::State self)
3614 PROTOTYPE: $
3615 CODE:
3616 self->flags &= ~CF_SUSPENDED;
3617
3618void
3619_pool_handler (...)
3620 CODE:
3621 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3622
3623void
3624async_pool (SV *cv, ...)
3625 PROTOTYPE: &@
3626 PPCODE:
3627{
3628 HV *hv = (HV *)av_pop (av_async_pool);
3629 AV *av = newAV ();
3630 SV *cb = ST (0);
3631 int i;
3632
3633 av_extend (av, items - 2);
3634 for (i = 1; i < items; ++i)
3635 av_push (av, SvREFCNT_inc_NN (ST (i)));
3636
3637 if ((SV *)hv == &PL_sv_undef)
2528 { 3638 {
2529 SV *old = PL_diehook; 3639 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2530 PL_diehook = 0; 3640 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2531 SvREFCNT_dec (old); 3641 SvREFCNT_dec (sv);
2532 croak ("\3async_pool terminate\2\n");
2533 } 3642 }
2534 3643
2535 SvREFCNT_dec (coro->saved_deffh);
2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538 hv_store (hv, "desc", sizeof ("desc") - 1,
2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541 invoke_av = (AV *)SvRV (invoke);
2542 len = av_len (invoke_av);
2543
2544 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546 if (len > 0)
2547 { 3644 {
2548 av_fill (defav, len - 1); 3645 struct coro *coro = SvSTATE_hv (hv);
2549 for (i = 0; i < len; ++i) 3646
2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3647 assert (!coro->invoke_cb);
3648 assert (!coro->invoke_av);
3649 coro->invoke_cb = SvREFCNT_inc (cb);
3650 coro->invoke_av = av;
2551 } 3651 }
3652
3653 api_ready (aTHX_ (SV *)hv);
3654
3655 if (GIMME_V != G_VOID)
3656 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3657 else
3658 SvREFCNT_dec (hv);
2552} 3659}
3660
3661SV *
3662rouse_cb ()
3663 PROTOTYPE:
3664 CODE:
3665 RETVAL = coro_new_rouse_cb (aTHX);
3666 OUTPUT:
3667 RETVAL
2553 3668
2554void 3669void
2555_pool_2 (SV *cb) 3670rouse_wait (...)
3671 PROTOTYPE: ;$
3672 PPCODE:
3673 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3674
3675void
3676on_enter (SV *block)
3677 ALIAS:
3678 on_leave = 1
3679 PROTOTYPE: &
2556 CODE: 3680 CODE:
2557{ 3681{
2558 struct coro *coro = SvSTATE_current; 3682 struct coro *coro = SvSTATE_current;
3683 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2559 3684
2560 sv_setsv (cb, &PL_sv_undef); 3685 block = s_get_cv_croak (block);
2561 3686
2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3687 if (!*avp)
2563 coro->saved_deffh = 0;
2564
2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
2571 croak ("\3async_pool terminate\2\n");
2572 }
2573
2574 av_clear (GvAV (PL_defgv));
2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578 coro->prio = 0;
2579
2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581 api_trace (aTHX_ coro_current, 0);
2582
2583 av_push (av_async_pool, newSVsv (coro_current));
2584}
2585
2586
2587MODULE = Coro::State PACKAGE = Coro::AIO
2588
2589void
2590_get_state (SV *self)
2591 PROTOTYPE: $
2592 PPCODE:
2593{
2594 AV *defav = GvAV (PL_defgv);
2595 AV *av = newAV (); 3688 *avp = newAV ();
2596 int i;
2597 SV *data_sv = newSV (sizeof (struct io_state));
2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599 SvCUR_set (data_sv, sizeof (struct io_state));
2600 SvPOK_only (data_sv);
2601 3689
2602 data->errorno = errno; 3690 av_push (*avp, SvREFCNT_inc (block));
2603 data->laststype = PL_laststype;
2604 data->laststatval = PL_laststatval;
2605 data->statcache = PL_statcache;
2606 3691
2607 av_extend (av, AvFILLp (defav) + 1 + 1); 3692 if (!ix)
3693 on_enterleave_call (aTHX_ block);
2608 3694
2609 for (i = 0; i <= AvFILLp (defav); ++i) 3695 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3696 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2611 3697 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2612 av_push (av, data_sv);
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
2617}
2618
2619void
2620_set_state (SV *state)
2621 PROTOTYPE: $
2622 PPCODE:
2623{
2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
2627
2628 errno = data->errorno;
2629 PL_laststype = data->laststype;
2630 PL_laststatval = data->laststatval;
2631 PL_statcache = data->statcache;
2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 {
2659 PUSHMARK (SP);
2660 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2662 SPAGAIN;
2663 }
2664
2665 --incede;
2666} 3698}
2667 3699
2668 3700
2669MODULE = Coro::State PACKAGE = PerlIO::cede 3701MODULE = Coro::State PACKAGE = PerlIO::cede
2670 3702
2671BOOT: 3703BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3704 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 3705
3706
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 3707MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 3708
2676SV * 3709SV *
2677new (SV *klass, SV *count_ = 0) 3710new (SV *klass, SV *count = 0)
2678 CODE: 3711 CODE:
2679{ 3712{
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3713 int semcnt = 1;
2681 AV *av = newAV (); 3714
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3715 if (count)
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3716 {
3717 SvGETMAGIC (count);
3718
3719 if (SvOK (count))
3720 semcnt = SvIV (count);
3721 }
3722
3723 RETVAL = sv_bless (
3724 coro_waitarray_new (aTHX_ semcnt),
3725 GvSTASH (CvGV (cv))
3726 );
2684} 3727}
3728 OUTPUT:
3729 RETVAL
3730
3731# helper for Coro::Channel and others
3732SV *
3733_alloc (int count)
3734 CODE:
3735 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 3736 OUTPUT:
2686 RETVAL 3737 RETVAL
2687 3738
2688SV * 3739SV *
2689count (SV *self) 3740count (SV *self)
… …
2698 adjust = 1 3749 adjust = 1
2699 CODE: 3750 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3751 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 3752
2702void 3753void
2703down (SV *self) 3754down (...)
2704 CODE: 3755 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3756 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3757
3758void
3759wait (...)
3760 CODE:
3761 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 3762
2707void 3763void
2708try (SV *self) 3764try (SV *self)
2709 PPCODE: 3765 PPCODE:
2710{ 3766{
… …
2722 XSRETURN_NO; 3778 XSRETURN_NO;
2723} 3779}
2724 3780
2725void 3781void
2726waiters (SV *self) 3782waiters (SV *self)
2727 CODE: 3783 PPCODE:
2728{ 3784{
2729 AV *av = (AV *)SvRV (self); 3785 AV *av = (AV *)SvRV (self);
3786 int wcount = AvFILLp (av) + 1 - 1;
2730 3787
2731 if (GIMME_V == G_SCALAR) 3788 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3789 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 3790 else
2734 { 3791 {
2735 int i; 3792 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 3793 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 3794 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 3795 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 3796 }
2740} 3797}
2741 3798
3799MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3800
3801void
3802_may_delete (SV *sem, int count, int extra_refs)
3803 PPCODE:
3804{
3805 AV *av = (AV *)SvRV (sem);
3806
3807 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3808 && AvFILLp (av) == 0 /* no waiters, just count */
3809 && SvIV (AvARRAY (av)[0]) == count)
3810 XSRETURN_YES;
3811
3812 XSRETURN_NO;
3813}
3814
3815MODULE = Coro::State PACKAGE = Coro::Signal
3816
3817SV *
3818new (SV *klass)
3819 CODE:
3820 RETVAL = sv_bless (
3821 coro_waitarray_new (aTHX_ 0),
3822 GvSTASH (CvGV (cv))
3823 );
3824 OUTPUT:
3825 RETVAL
3826
3827void
3828wait (...)
3829 CODE:
3830 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3831
3832void
3833broadcast (SV *self)
3834 CODE:
3835{
3836 AV *av = (AV *)SvRV (self);
3837 coro_signal_wake (aTHX_ av, AvFILLp (av));
3838}
3839
3840void
3841send (SV *self)
3842 CODE:
3843{
3844 AV *av = (AV *)SvRV (self);
3845
3846 if (AvFILLp (av))
3847 coro_signal_wake (aTHX_ av, 1);
3848 else
3849 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3850}
3851
3852IV
3853awaited (SV *self)
3854 CODE:
3855 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3856 OUTPUT:
3857 RETVAL
3858
3859
3860MODULE = Coro::State PACKAGE = Coro::AnyEvent
3861
3862BOOT:
3863 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3864
3865void
3866_schedule (...)
3867 CODE:
3868{
3869 static int incede;
3870
3871 api_cede_notself (aTHX);
3872
3873 ++incede;
3874 while (coro_nready >= incede && api_cede (aTHX))
3875 ;
3876
3877 sv_setsv (sv_activity, &PL_sv_undef);
3878 if (coro_nready >= incede)
3879 {
3880 PUSHMARK (SP);
3881 PUTBACK;
3882 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3883 }
3884
3885 --incede;
3886}
3887
3888
3889MODULE = Coro::State PACKAGE = Coro::AIO
3890
3891void
3892_register (char *target, char *proto, SV *req)
3893 CODE:
3894{
3895 SV *req_cv = s_get_cv_croak (req);
3896 /* newXSproto doesn't return the CV on 5.8 */
3897 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3898 sv_setpv ((SV *)slf_cv, proto);
3899 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3900}
3901
3902MODULE = Coro::State PACKAGE = Coro::Select
3903
3904void
3905patch_pp_sselect ()
3906 CODE:
3907 if (!coro_old_pp_sselect)
3908 {
3909 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3910 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3911 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3912 }
3913
3914void
3915unpatch_pp_sselect ()
3916 CODE:
3917 if (coro_old_pp_sselect)
3918 {
3919 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3920 coro_old_pp_sselect = 0;
3921 }
3922

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