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Comparing Coro/Coro/State.xs (file contents):
Revision 1.290 by root, Tue Nov 18 05:51:38 2008 UTC vs.
Revision 1.402 by root, Sun May 22 13:07:23 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
16 21
17#ifdef WIN32 22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
25
26#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY
18# undef setjmp 28# undef setjmp
19# undef longjmp 29# undef longjmp
20# undef _exit 30# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 31# define setjmp _setjmp /* deep magic */
22#else 32#else
23# include <inttypes.h> /* most portable stdint.h */ 33# include <inttypes.h> /* most portable stdint.h */
24#endif 34#endif
25 35
26#ifdef HAVE_MMAP 36#ifdef HAVE_MMAP
… …
51#endif 61#endif
52 62
53/* the maximum number of idle cctx that will be pooled */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 67# undef CORO_STACKGUARD
111#endif 68#endif
112 69
113#ifndef CORO_STACKGUARD 70#ifndef CORO_STACKGUARD
… …
120#endif 77#endif
121 78
122/* The next macros try to return the current stack pointer, in an as 79/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 80 * portable way as possible. */
124#if __GNUC__ >= 4 81#if __GNUC__ >= 4
82# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 83# define STACKLEVEL __builtin_frame_address (0)
126#else 84#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 85# define dSTACKLEVEL volatile void *stacklevel
86# define STACKLEVEL ((void *)&stacklevel)
128#endif 87#endif
129 88
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 89#define IN_DESTRUCT PL_dirty
131 90
132#if __GNUC__ >= 3 91#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 92# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 94# define INLINE static inline
136#else 95#else
137# define attribute(x) 96# define attribute(x)
138# define expect(expr,value) (expr) 97# define expect(expr,value) (expr)
139# define INLINE static 98# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 102#define expect_true(expr) expect ((expr) != 0, 1)
144 103
145#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
146 105
147#include "CoroAPI.h" 106#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */
148 108
149#ifdef USE_ITHREADS 109#ifdef USE_ITHREADS
150# if CORO_PTHREAD 110# if CORO_PTHREAD
151static void *coro_thx; 111static void *coro_thx;
152# endif 112# endif
153#endif 113#endif
154 114
115#ifdef __linux
116# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime
119# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
120# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif
123#endif
124
155static double (*nvtime)(); /* so why doesn't it take void? */ 125static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]);
156 127
157/* we hijack an hopefully unused CV flag for our purposes */ 128/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 129#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 130static OP *pp_slf (pTHX);
131static void slf_destroy (pTHX_ struct coro *coro);
160 132
161static U32 cctx_gen; 133static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE; 134static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 135static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 136static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 137static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 138static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 139static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 140
141static AV *av_destroy; /* destruction queue */
142static SV *sv_manager; /* the manager coro */
143static SV *sv_idle; /* $Coro::idle */
144
169static GV *irsgv; /* $/ */ 145static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 146static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 147static SV *rv_diehook;
172static SV *rv_warnhook; 148static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 149static HV *hv_sig; /* %SIG */
174 150
175/* async_pool helper stuff */ 151/* async_pool helper stuff */
176static SV *sv_pool_rss; 152static SV *sv_pool_rss;
177static SV *sv_pool_size; 153static SV *sv_pool_size;
154static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 155static AV *av_async_pool; /* idle pool */
156static SV *sv_Coro; /* class string */
157static CV *cv_pool_handler;
179 158
180/* Coro::AnyEvent */ 159/* Coro::AnyEvent */
181static SV *sv_activity; 160static SV *sv_activity;
182 161
162/* enable processtime/realtime profiling */
163static char enable_times;
164typedef U32 coro_ts[2];
165static coro_ts time_real, time_cpu;
166static char times_valid;
167
183static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
185 170
186enum { 171enum
172{
187 CC_MAPPED = 0x01, 173 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */ 174 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04, 175 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */ 176 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 177 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
212 int valgrind_id; 198 int valgrind_id;
213#endif 199#endif
214 unsigned char flags; 200 unsigned char flags;
215} coro_cctx; 201} coro_cctx;
216 202
203static coro_cctx *cctx_current; /* the currently running cctx */
204
205/*****************************************************************************/
206
207static MGVTBL coro_state_vtbl;
208
217enum { 209enum
210{
218 CF_RUNNING = 0x0001, /* coroutine is running */ 211 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 212 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
215 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
216 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
222}; 217};
223 218
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 219/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 220typedef struct
226{ 221{
227 SV *defsv; 222 SV *defsv;
228 AV *defav; 223 AV *defav;
229 SV *errsv; 224 SV *errsv;
230 SV *irsgv; 225 SV *irsgv;
226 HV *hinthv;
231#define VAR(name,type) type name; 227#define VAR(name,type) type name;
232# include "state.h" 228# include "state.h"
233#undef VAR 229#undef VAR
234} perl_slots; 230} perl_slots;
235 231
232// how many context stack entries do we need for perl_slots
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 233#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 234
238/* this is a structure representing a perl-level coroutine */ 235/* this is a structure representing a perl-level coroutine */
239struct coro { 236struct coro
237{
240 /* the C coroutine allocated to this perl coroutine, if any */ 238 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 239 coro_cctx *cctx;
240
241 /* ready queue */
242 struct coro *next_ready;
242 243
243 /* state data */ 244 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 245 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 246 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 247 perl_slots *slot; /* basically the saved sp */
247 248
249 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 250 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 251 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 252 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253 253
254 /* statistics */ 254 /* statistics */
255 int usecount; /* number of transfers to this coro */ 255 int usecount; /* number of transfers to this coro */
256 256
257 /* coro process data */ 257 /* coro process data */
258 int prio; 258 int prio;
259 SV *throw; /* exception to be thrown */ 259 SV *except; /* exception to be thrown */
260 SV *rouse_cb; /* last rouse callback */
261 AV *on_destroy; /* callbacks or coros to notify on destroy */
262 AV *status; /* the exit status list */
260 263
261 /* async_pool */ 264 /* async_pool */
262 SV *saved_deffh; 265 SV *saved_deffh;
266 SV *invoke_cb;
267 AV *invoke_av;
268
269 /* on_enter/on_leave */
270 AV *on_enter;
271 AV *on_leave;
272
273 /* swap_sv */
274 AV *swap_sv;
275
276 /* times */
277 coro_ts t_cpu, t_real;
263 278
264 /* linked list */ 279 /* linked list */
265 struct coro *next, *prev; 280 struct coro *next, *prev;
266}; 281};
267 282
268typedef struct coro *Coro__State; 283typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 284typedef struct coro *Coro__State_or_hashref;
270 285
271/* the following variables are effectively part of the perl context */ 286/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 287/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 288/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 289static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 290
277/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
278 292
279#define PRIO_MAX 3 293#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 294#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 295#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 296#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 297#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 298#define CORO_PRIO_MIN -4
285 299
286/* for Coro.pm */ 300/* for Coro.pm */
287static SV *coro_current; 301static SV *coro_current;
288static SV *coro_readyhook; 302static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 303static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static CV *cv_coro_run;
290static struct coro *coro_first; 305static struct coro *coro_first;
291#define coro_nready coroapi.nready 306#define coro_nready coroapi.nready
307
308/** Coro::Select ************************************************************/
309
310static OP *(*coro_old_pp_sselect) (pTHX);
311static SV *coro_select_select;
312
313/* horrible hack, but if it works... */
314static OP *
315coro_pp_sselect (pTHX)
316{
317 dSP;
318 PUSHMARK (SP - 4); /* fake argument list */
319 XPUSHs (coro_select_select);
320 PUTBACK;
321
322 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
323 PL_op->op_flags |= OPf_STACKED;
324 PL_op->op_private = 0;
325 return PL_ppaddr [OP_ENTERSUB](aTHX);
326}
327
328/** time stuff **************************************************************/
329
330#ifdef HAS_GETTIMEOFDAY
331
332static void
333coro_u2time (pTHX_ UV ret[2])
334{
335 struct timeval tv;
336 gettimeofday (&tv, 0);
337
338 ret [0] = tv.tv_sec;
339 ret [1] = tv.tv_usec;
340}
341
342static double
343coro_nvtime ()
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 return tv.tv_sec + tv.tv_usec * 1e-6;
349}
350
351static void
352time_init (pTHX)
353{
354 nvtime = coro_nvtime;
355 u2time = coro_u2time;
356}
357
358#else
359
360static void
361time_init (pTHX)
362{
363 SV **svp;
364
365 require_pv ("Time/HiRes.pm");
366
367 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368
369 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371
372 nvtime = INT2PTR (double (*)(), SvIV (*svp));
373
374 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
375 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
376}
377
378#endif
292 379
293/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
294 381
295static SV * 382static SV *
296coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
… …
320 get_hv (name, create); 407 get_hv (name, create);
321#endif 408#endif
322 return get_hv (name, create); 409 return get_hv (name, create);
323} 410}
324 411
412INLINE void
413coro_times_update ()
414{
415#ifdef coro_clock_gettime
416 struct timespec ts;
417
418 ts.tv_sec = ts.tv_nsec = 0;
419 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
420 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
424 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
425#else
426 dTHX;
427 UV tv[2];
428
429 u2time (aTHX_ tv);
430 time_real [0] = tv [0];
431 time_real [1] = tv [1] * 1000;
432#endif
433}
434
435INLINE void
436coro_times_add (struct coro *c)
437{
438 c->t_real [1] += time_real [1];
439 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440 c->t_real [0] += time_real [0];
441
442 c->t_cpu [1] += time_cpu [1];
443 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444 c->t_cpu [0] += time_cpu [0];
445}
446
447INLINE void
448coro_times_sub (struct coro *c)
449{
450 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451 c->t_real [1] -= time_real [1];
452 c->t_real [0] -= time_real [0];
453
454 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
455 c->t_cpu [1] -= time_cpu [1];
456 c->t_cpu [0] -= time_cpu [0];
457}
458
459/*****************************************************************************/
460/* magic glue */
461
462#define CORO_MAGIC_type_cv 26
463#define CORO_MAGIC_type_state PERL_MAGIC_ext
464
465#define CORO_MAGIC_NN(sv, type) \
466 (expect_true (SvMAGIC (sv)->mg_type == type) \
467 ? SvMAGIC (sv) \
468 : mg_find (sv, type))
469
470#define CORO_MAGIC(sv, type) \
471 (expect_true (SvMAGIC (sv)) \
472 ? CORO_MAGIC_NN (sv, type) \
473 : 0)
474
475#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477
478INLINE MAGIC *
479SvSTATEhv_p (pTHX_ SV *coro)
480{
481 MAGIC *mg;
482
483 if (expect_true (
484 SvTYPE (coro) == SVt_PVHV
485 && (mg = CORO_MAGIC_state (coro))
486 && mg->mg_virtual == &coro_state_vtbl
487 ))
488 return mg;
489
490 return 0;
491}
492
493INLINE struct coro *
494SvSTATE_ (pTHX_ SV *coro)
495{
496 MAGIC *mg;
497
498 if (SvROK (coro))
499 coro = SvRV (coro);
500
501 mg = SvSTATEhv_p (aTHX_ coro);
502 if (!mg)
503 croak ("Coro::State object required");
504
505 return (struct coro *)mg->mg_ptr;
506}
507
508#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
509
510/* faster than SvSTATE, but expects a coroutine hv */
511#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
512#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513
514/*****************************************************************************/
515/* padlist management and caching */
516
325static AV * 517static AV *
326coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
327{ 519{
328 AV *padlist = CvPADLIST (cv); 520 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 521 AV *newpadlist, *newpad;
330 522
331 newpadlist = newAV (); 523 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 528 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 529#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 530 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 531 --AvFILLp (padlist);
340 532
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 533 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 534 av_store (newpadlist, 1, (SV *)newpad);
343 535
344 return newpadlist; 536 return newpadlist;
345} 537}
346 538
347static void 539static void
348free_padlist (pTHX_ AV *padlist) 540free_padlist (pTHX_ AV *padlist)
349{ 541{
350 /* may be during global destruction */ 542 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 543 if (!IN_DESTRUCT)
352 { 544 {
353 I32 i = AvFILLp (padlist); 545 I32 i = AvFILLp (padlist);
354 while (i >= 0) 546
547 while (i > 0) /* special-case index 0 */
355 { 548 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 549 /* we try to be extra-careful here */
357 if (svp) 550 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 551 I32 j = AvFILLp (av);
359 SV *sv; 552
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 553 while (j >= 0)
554 SvREFCNT_dec (AvARRAY (av)[j--]);
555
556 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 557 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 558 }
366 559
560 SvREFCNT_dec (AvARRAY (padlist)[0]);
561
562 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 563 SvREFCNT_dec ((SV*)padlist);
368 } 564 }
369} 565}
370 566
371static int 567static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 568coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 569{
374 AV *padlist; 570 AV *padlist;
375 AV *av = (AV *)mg->mg_obj; 571 AV *av = (AV *)mg->mg_obj;
572
573 /* perl manages to free our internal AV and _then_ call us */
574 if (IN_DESTRUCT)
575 return 0;
376 576
377 /* casting is fun. */ 577 /* casting is fun. */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 578 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
379 free_padlist (aTHX_ padlist); 579 free_padlist (aTHX_ padlist);
380 580
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 581 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 582
383 return 0; 583 return 0;
384} 584}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 585
389static MGVTBL coro_cv_vtbl = { 586static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 587 0, 0, 0, 0,
391 coro_cv_free 588 coro_cv_free
392}; 589};
393
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436 590
437/* the next two functions merely cache the padlists */ 591/* the next two functions merely cache the padlists */
438static void 592static void
439get_padlist (pTHX_ CV *cv) 593get_padlist (pTHX_ CV *cv)
440{ 594{
… …
446 else 600 else
447 { 601 {
448#if CORO_PREFER_PERL_FUNCTIONS 602#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 603 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 604 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 605 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 606 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 607 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 608 SvREFCNT_dec (cp);
455#else 609#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 610 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 611#endif
458 } 612 }
459} 613}
460 614
461static void 615static void
… …
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 622 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
469 623
470 av = (AV *)mg->mg_obj; 624 av = (AV *)mg->mg_obj;
471 625
472 if (expect_false (AvFILLp (av) >= AvMAX (av))) 626 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1); 627 av_extend (av, AvFILLp (av) + 1);
474 628
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 629 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 630}
477 631
478/** load & save, init *******************************************************/ 632/** load & save, init *******************************************************/
633
634/* swap sv heads, at least logically */
635static void
636swap_svs (pTHX_ Coro__State c)
637{
638 int i;
639
640 for (i = 0; i <= AvFILLp (c->swap_sv); )
641 {
642 SV *a = AvARRAY (c->swap_sv)[i++];
643 SV *b = AvARRAY (c->swap_sv)[i++];
644
645 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
646 SV tmp;
647
648 /* swap sv_any */
649 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
650
651 /* swap sv_flags */
652 SvFLAGS (&tmp) = SvFLAGS (a);
653 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
654 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
655
656#if PERL_VERSION_ATLEAST (5,10,0)
657 /* perl 5.10 complicates this _quite_ a bit, but it also is
658 * much faster, so no quarrels here. alternatively, we could
659 * sv_upgrade to avoid this.
660 */
661 {
662 /* swap sv_u */
663 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
664
665 /* if SvANY points to the head, we need to adjust the pointers,
666 * as the pointer for a still points to b, and maybe vice versa.
667 */
668 #define svany_in_head(type) \
669 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
670
671 if (svany_in_head (SvTYPE (a)))
672 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
673
674 if (svany_in_head (SvTYPE (b)))
675 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
676 }
677#endif
678 }
679}
680
681#define SWAP_SVS(coro) \
682 if (expect_false ((coro)->swap_sv)) \
683 swap_svs (aTHX_ (coro))
684
685static void
686on_enterleave_call (pTHX_ SV *cb);
479 687
480static void 688static void
481load_perl (pTHX_ Coro__State c) 689load_perl (pTHX_ Coro__State c)
482{ 690{
483 perl_slots *slot = c->slot; 691 perl_slots *slot = c->slot;
484 c->slot = 0; 692 c->slot = 0;
485 693
486 PL_mainstack = c->mainstack; 694 PL_mainstack = c->mainstack;
487 695
488 GvSV (PL_defgv) = slot->defsv; 696 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav; 697 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv; 698 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv; 699 GvSV (irsgv) = slot->irsgv;
700 GvHV (PL_hintgv) = slot->hinthv;
492 701
493 #define VAR(name,type) PL_ ## name = slot->name; 702 #define VAR(name,type) PL_ ## name = slot->name;
494 # include "state.h" 703 # include "state.h"
495 #undef VAR 704 #undef VAR
496 705
… …
509 718
510 PUTBACK; 719 PUTBACK;
511 } 720 }
512 721
513 slf_frame = c->slf_frame; 722 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 723 CORO_THROW = c->except;
724
725 if (expect_false (enable_times))
726 {
727 if (expect_false (!times_valid))
728 coro_times_update ();
729
730 coro_times_sub (c);
731 }
732
733 if (expect_false (c->on_enter))
734 {
735 int i;
736
737 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
738 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
739 }
740
741 SWAP_SVS (c);
515} 742}
516 743
517static void 744static void
518save_perl (pTHX_ Coro__State c) 745save_perl (pTHX_ Coro__State c)
519{ 746{
520 c->throw = coro_throw; 747 SWAP_SVS (c);
748
749 if (expect_false (c->on_leave))
750 {
751 int i;
752
753 for (i = AvFILLp (c->on_leave); i >= 0; --i)
754 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
755 }
756
757 times_valid = 0;
758
759 if (expect_false (enable_times))
760 {
761 coro_times_update (); times_valid = 1;
762 coro_times_add (c);
763 }
764
765 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 766 c->slf_frame = slf_frame;
522 767
523 { 768 {
524 dSP; 769 dSP;
525 I32 cxix = cxstack_ix; 770 I32 cxix = cxstack_ix;
… …
537 { 782 {
538 while (expect_true (cxix >= 0)) 783 while (expect_true (cxix >= 0))
539 { 784 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 785 PERL_CONTEXT *cx = &ccstk[cxix--];
541 786
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 787 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 788 {
544 CV *cv = cx->blk_sub.cv; 789 CV *cv = cx->blk_sub.cv;
545 790
546 if (expect_true (CvDEPTH (cv))) 791 if (expect_true (CvDEPTH (cv)))
547 { 792 {
… …
566 811
567 PUTBACK; 812 PUTBACK;
568 } 813 }
569 814
570 /* allocate some space on the context stack for our purposes */ 815 /* allocate some space on the context stack for our purposes */
571 /* we manually unroll here, as usually 2 slots is enough */ 816 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
572 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 { 817 {
576 int i; 818 unsigned int i;
819
577 for (i = 3; i < SLOT_COUNT; ++i) 820 for (i = 0; i < SLOT_COUNT; ++i)
578 CXINC; 821 CXINC;
579 } 822
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 823 cxstack_ix -= SLOT_COUNT; /* undo allocation */
824 }
581 825
582 c->mainstack = PL_mainstack; 826 c->mainstack = PL_mainstack;
583 827
584 { 828 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 829 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 830
587 slot->defav = GvAV (PL_defgv); 831 slot->defav = GvAV (PL_defgv);
588 slot->defsv = DEFSV; 832 slot->defsv = DEFSV;
589 slot->errsv = ERRSV; 833 slot->errsv = ERRSV;
590 slot->irsgv = GvSV (irsgv); 834 slot->irsgv = GvSV (irsgv);
835 slot->hinthv = GvHV (PL_hintgv);
591 836
592 #define VAR(name,type) slot->name = PL_ ## name; 837 #define VAR(name,type) slot->name = PL_ ## name;
593 # include "state.h" 838 # include "state.h"
594 #undef VAR 839 #undef VAR
595 } 840 }
… …
600 * of perl.c:init_stacks, except that it uses less memory 845 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 846 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 847 * not usually need a lot of stackspace.
603 */ 848 */
604#if CORO_PREFER_PERL_FUNCTIONS 849#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 850# define coro_init_stacks(thx) init_stacks ()
606#else 851#else
607static void 852static void
608coro_init_stacks (pTHX) 853coro_init_stacks (pTHX)
609{ 854{
610 PL_curstackinfo = new_stackinfo(32, 8); 855 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
611 PL_curstackinfo->si_type = PERLSI_MAIN; 856 PL_curstackinfo->si_type = PERLSI_MAIN;
612 PL_curstack = PL_curstackinfo->si_stack; 857 PL_curstack = PL_curstackinfo->si_stack;
613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 858 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
614 859
615 PL_stack_base = AvARRAY(PL_curstack); 860 PL_stack_base = AvARRAY(PL_curstack);
… …
673#if !PERL_VERSION_ATLEAST (5,10,0) 918#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 919 Safefree (PL_retstack);
675#endif 920#endif
676} 921}
677 922
923#define CORO_RSS \
924 rss += sizeof (SYM (curstackinfo)); \
925 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
926 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
927 rss += SYM (tmps_max) * sizeof (SV *); \
928 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
929 rss += SYM (scopestack_max) * sizeof (I32); \
930 rss += SYM (savestack_max) * sizeof (ANY);
931
678static size_t 932static size_t
679coro_rss (pTHX_ struct coro *coro) 933coro_rss (pTHX_ struct coro *coro)
680{ 934{
681 size_t rss = sizeof (*coro); 935 size_t rss = sizeof (*coro);
682 936
683 if (coro->mainstack) 937 if (coro->mainstack)
684 { 938 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 939 if (coro->flags & CF_RUNNING)
689 { 940 {
690 slot = &tmp_slot; 941 #define SYM(sym) PL_ ## sym
691 942 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 943 #undef SYM
695 } 944 }
696 else 945 else
697 slot = coro->slot;
698
699 if (slot)
700 { 946 {
701 rss += sizeof (slot->curstackinfo); 947 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 948 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 949 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 950 }
713 } 951 }
714 952
715 return rss; 953 return rss;
716} 954}
… …
729#endif 967#endif
730 968
731/* 969/*
732 * This overrides the default magic get method of %SIG elements. 970 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 971 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 972 * and instead of trying to save and restore the hash elements (extremely slow),
735 * readback here. 973 * we just provide our own readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 974 */
740static int 975static int
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 976coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 977{
743 const char *s = MgPV_nolen_const (mg); 978 const char *s = MgPV_nolen_const (mg);
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1031 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 1032
798 if (svp) 1033 if (svp)
799 { 1034 {
800 SV *old = *svp; 1035 SV *old = *svp;
801 *svp = newSVsv (sv); 1036 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 1037 SvREFCNT_dec (old);
803 return 0; 1038 return 0;
804 } 1039 }
805 } 1040 }
806 1041
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 1053slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 1054{
820 return 0; 1055 return 0;
821} 1056}
822 1057
823static UNOP coro_setup_op; 1058static int
1059slf_check_repeat (pTHX_ struct CoroSLF *frame)
1060{
1061 return 1;
1062}
1063
1064static UNOP init_perl_op;
824 1065
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1066static void NOINLINE /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 1067init_perl (pTHX_ struct coro *coro)
827{ 1068{
828 /* 1069 /*
829 * emulate part of the perl startup here. 1070 * emulate part of the perl startup here.
830 */ 1071 */
831 coro_init_stacks (aTHX); 1072 coro_init_stacks (aTHX);
832 1073
833 PL_runops = RUNOPS_DEFAULT; 1074 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1075 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1076 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1077 PL_comppad = 0;
1078 PL_comppad_name = 0;
1079 PL_comppad_name_fill = 0;
1080 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1081 PL_curpm = 0;
838 PL_curpad = 0; 1082 PL_curpad = 0;
839 PL_localizing = 0; 1083 PL_localizing = 0;
840 PL_dirty = 0;
841 PL_restartop = 0; 1084 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1085#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1086 PL_parser = 0;
844#endif 1087#endif
1088 PL_hints = 0;
845 1089
846 /* recreate the die/warn hooks */ 1090 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1091 PL_diehook = SvREFCNT_inc (rv_diehook);
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1092 PL_warnhook = SvREFCNT_inc (rv_warnhook);
849 1093
850 GvSV (PL_defgv) = newSV (0); 1094 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1095 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1096 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1097 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1098 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1099 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1100 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1101
857 { 1102 {
858 dSP; 1103 dSP;
859 UNOP myop; 1104 UNOP myop;
860 1105
861 Zero (&myop, 1, UNOP); 1106 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1107 myop.op_next = Nullop;
1108 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1109 myop.op_flags = OPf_WANT_VOID;
864 1110
865 PUSHMARK (SP); 1111 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1112 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1113 PUTBACK;
868 PL_op = (OP *)&myop; 1114 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1115 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1116 }
872 1117
873 /* this newly created coroutine might be run on an existing cctx which most 1118 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1119 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1120 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1121 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1122 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1123 slf_frame.destroy = 0;
878 1124
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1125 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1126 init_perl_op.op_next = PL_op;
1127 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1128 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1129 /* no flags etc. required, as an init function won't be called */
883 1130
884 PL_op = (OP *)&coro_setup_op; 1131 PL_op = (OP *)&init_perl_op;
885 1132
886 /* copy throw, in case it was set before coro_setup */ 1133 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1134 CORO_THROW = coro->except;
888}
889 1135
1136 SWAP_SVS (coro);
1137
1138 if (expect_false (enable_times))
1139 {
1140 coro_times_update ();
1141 coro_times_sub (coro);
1142 }
1143}
1144
890static void 1145static void
891coro_destruct (pTHX_ struct coro *coro) 1146coro_unwind_stacks (pTHX)
892{ 1147{
893 if (!IN_DESTRUCT) 1148 if (!IN_DESTRUCT)
894 { 1149 {
895 /* restore all saved variables and stuff */ 1150 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1151 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1159 POPSTACK_TO (PL_mainstack);
905 1160
906 /* unwind main stack */ 1161 /* unwind main stack */
907 dounwind (-1); 1162 dounwind (-1);
908 } 1163 }
1164}
909 1165
910 SvREFCNT_dec (GvSV (PL_defgv)); 1166static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1167destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1168{
913 SvREFCNT_dec (PL_defoutgv); 1169 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1170
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1171 {
1172 SV *old_current = SvRV (coro_current);
1173 struct coro *current = SvSTATE (old_current);
1174
1175 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1176
1177 save_perl (aTHX_ current);
1178
1179 /* this will cause transfer_check to croak on block*/
1180 SvRV_set (coro_current, (SV *)coro->hv);
1181
1182 load_perl (aTHX_ coro);
1183
1184 coro_unwind_stacks (aTHX);
1185
1186 /* restore swapped sv's */
1187 SWAP_SVS (coro);
1188
1189 coro_destruct_stacks (aTHX);
1190
1191 // now save some sv's to be free'd later
1192 svf [0] = GvSV (PL_defgv);
1193 svf [1] = (SV *)GvAV (PL_defgv);
1194 svf [2] = GvSV (PL_errgv);
1195 svf [3] = (SV *)PL_defoutgv;
1196 svf [4] = PL_rs;
1197 svf [5] = GvSV (irsgv);
1198 svf [6] = (SV *)GvHV (PL_hintgv);
1199 svf [7] = PL_diehook;
1200 svf [8] = PL_warnhook;
1201 assert (9 == sizeof (svf) / sizeof (*svf));
1202
1203 SvRV_set (coro_current, old_current);
1204
1205 load_perl (aTHX_ current);
1206 }
1207
1208 {
1209 unsigned int i;
1210
1211 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1212 SvREFCNT_dec (svf [i]);
1213
920 SvREFCNT_dec (coro->saved_deffh); 1214 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1215 SvREFCNT_dec (coro->rouse_cb);
922 1216 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1217 SvREFCNT_dec (coro->invoke_av);
1218 }
924} 1219}
925 1220
926INLINE void 1221INLINE void
927free_coro_mortal (pTHX) 1222free_coro_mortal (pTHX)
928{ 1223{
929 if (expect_true (coro_mortal)) 1224 if (expect_true (coro_mortal))
930 { 1225 {
931 SvREFCNT_dec (coro_mortal); 1226 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1227 coro_mortal = 0;
933 } 1228 }
934} 1229}
935 1230
936static int 1231static int
937runops_trace (pTHX) 1232runops_trace (pTHX)
938{ 1233{
939 COP *oldcop = 0; 1234 COP *oldcop = 0;
940 int oldcxix = -2; 1235 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1236
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1237 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1238 {
946 PERL_ASYNC_CHECK (); 1239 PERL_ASYNC_CHECK ();
947 1240
948 if (cctx->flags & CC_TRACE_ALL) 1241 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1242 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1243 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1244 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1245 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1246 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1247 AV *av = newAV (); /* return values */
955 SV **cb; 1248 SV **cb;
… …
992 1285
993 if (PL_curcop != &PL_compiling) 1286 if (PL_curcop != &PL_compiling)
994 { 1287 {
995 SV **cb; 1288 SV **cb;
996 1289
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1290 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1291 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1292 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1293
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1294 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1295 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1296 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1297 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1298 SV *fullname = sv_2mortal (newSV (0));
1007 1299
1008 if (isGV (gv)) 1300 if (isGV (gv))
… …
1013 SAVETMPS; 1305 SAVETMPS;
1014 EXTEND (SP, 3); 1306 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1307 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1308 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1309 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1310 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1311 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1312 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1313 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1314 SPAGAIN;
1023 FREETMPS; 1315 FREETMPS;
… …
1026 } 1318 }
1027 1319
1028 oldcxix = cxstack_ix; 1320 oldcxix = cxstack_ix;
1029 } 1321 }
1030 1322
1031 if (cctx->flags & CC_TRACE_LINE) 1323 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1324 {
1033 dSP; 1325 dSP;
1034 1326
1035 PL_runops = RUNOPS_DEFAULT; 1327 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1328 ENTER;
… …
1055 1347
1056 TAINT_NOT; 1348 TAINT_NOT;
1057 return 0; 1349 return 0;
1058} 1350}
1059 1351
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1352static struct CoroSLF cctx_ssl_frame;
1062 1353
1063static void 1354static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1355slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1356{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1357 ta->prev = 0;
1068} 1358}
1069 1359
1070static int 1360static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1361slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1362{
1073 *frame = cctx_ssl_frame; 1363 *frame = cctx_ssl_frame;
1074 1364
1075 return 0; 1365 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1366}
1077 1367
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1368/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1369static void NOINLINE
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1370cctx_prepare (pTHX)
1081{ 1371{
1082 PL_top_env = &PL_start_env; 1372 PL_top_env = &PL_start_env;
1083 1373
1084 if (cctx->flags & CC_TRACE) 1374 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1375 PL_runops = runops_trace;
1086 1376
1087 /* we already must be in an SLF call, there is no other valid way 1377 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1378 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1379 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1380 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1381
1092 cctx_ssl_cctx = cctx; 1382 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1383 cctx_ssl_frame = slf_frame;
1094 1384
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1385 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1386 slf_frame.check = slf_check_set_stacklevel;
1097} 1387}
… …
1120 /* normally we would need to skip the entersub here */ 1410 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1411 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1412 /* PL_nop = PL_nop->op_next */
1123 1413
1124 /* inject a fake subroutine call to cctx_init */ 1414 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1415 cctx_prepare (aTHX);
1126 1416
1127 /* cctx_run is the alternative tail of transfer() */ 1417 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1418 transfer_tail (aTHX);
1129 1419
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1420 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1421 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1422 perl_run (PL_curinterp);
1423 /*
1424 * Unfortunately, there is no way to get at the return values of the
1425 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1426 * runtime errors here, as this is just a random interpreter, not a thread.
1427 */
1133 1428
1134 /* 1429 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1430 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1431 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1432 * reason for perl_run to return. We try to exit by jumping to the
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1433 * bootstrap-time "top" top_env, as we cannot restore the "main"
1139 * coroutine as Coro has no such concept 1434 * coroutine as Coro has no such concept.
1435 * This actually isn't valid with the pthread backend, but OSes requiring
1436 * that backend are too broken to do it in a standards-compliant way.
1140 */ 1437 */
1141 PL_top_env = main_top_env; 1438 PL_top_env = main_top_env;
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1439 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1440 }
1144} 1441}
… …
1221cctx_destroy (coro_cctx *cctx) 1518cctx_destroy (coro_cctx *cctx)
1222{ 1519{
1223 if (!cctx) 1520 if (!cctx)
1224 return; 1521 return;
1225 1522
1523 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1524
1226 --cctx_count; 1525 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1526 coro_destroy (&cctx->cctx);
1228 1527
1229 /* coro_transfer creates new, empty cctx's */ 1528 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr) 1529 if (cctx->sptr)
… …
1293 /* TODO: throwing up here is considered harmful */ 1592 /* TODO: throwing up here is considered harmful */
1294 1593
1295 if (expect_true (prev != next)) 1594 if (expect_true (prev != next))
1296 { 1595 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1596 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1597 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1598
1300 if (expect_false (next->flags & CF_RUNNING)) 1599 if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1600 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1601
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1602#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1603 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1604 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1605#endif
… …
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1611transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1612{
1317 dSTACKLEVEL; 1613 dSTACKLEVEL;
1318 1614
1319 /* sometimes transfer is only called to set idle_sp */ 1615 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1616 if (expect_false (!prev))
1321 { 1617 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1618 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1619 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1620 }
1325 else if (expect_true (prev != next)) 1621 else if (expect_true (prev != next))
1326 { 1622 {
1327 coro_cctx *prev__cctx; 1623 coro_cctx *cctx_prev;
1328 1624
1329 if (expect_false (prev->flags & CF_NEW)) 1625 if (expect_false (prev->flags & CF_NEW))
1330 { 1626 {
1331 /* create a new empty/source context */ 1627 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1628 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1629 prev->flags |= CF_RUNNING;
1335 } 1630 }
1336 1631
1337 prev->flags &= ~CF_RUNNING; 1632 prev->flags &= ~CF_RUNNING;
… …
1343 if (expect_false (next->flags & CF_NEW)) 1638 if (expect_false (next->flags & CF_NEW))
1344 { 1639 {
1345 /* need to start coroutine */ 1640 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1641 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1642 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1643 init_perl (aTHX_ next);
1349 } 1644 }
1350 else 1645 else
1351 load_perl (aTHX_ next); 1646 load_perl (aTHX_ next);
1352 1647
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1648 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1649 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1650 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1651 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1652 && !force_cctx
1360 )) 1653 ))
1361 { 1654 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1655 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1656 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1657
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1658 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1659 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1660 if (expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1661 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1662 next->cctx = cctx_get (aTHX);
1372 1663
1373 cctx_put (prev__cctx); 1664 cctx_put (cctx_current);
1374 } 1665 }
1666 else
1667 prev->cctx = cctx_current;
1375 1668
1376 ++next->usecount; 1669 ++next->usecount;
1377 1670
1378 if (expect_true (!next->cctx)) 1671 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1672 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1673
1381 if (expect_false (prev__cctx != next->cctx)) 1674 next->cctx = 0;
1675
1676 if (expect_false (cctx_prev != cctx_current))
1382 { 1677 {
1383 prev__cctx->top_env = PL_top_env; 1678 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1679 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1680 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1681 }
1387 1682
1388 transfer_tail (aTHX); 1683 transfer_tail (aTHX);
1389 } 1684 }
1390} 1685}
… …
1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1687#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1688#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1394 1689
1395/** high level stuff ********************************************************/ 1690/** high level stuff ********************************************************/
1396 1691
1692/* this function is actually Coro, not Coro::State, but we call it from here */
1693/* because it is convenient - but it hasn't been declared yet for that reason */
1397static int 1694static void
1695coro_call_on_destroy (pTHX_ struct coro *coro);
1696
1697static void
1398coro_state_destroy (pTHX_ struct coro *coro) 1698coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1699{
1400 if (coro->flags & CF_DESTROYED) 1700 if (coro->flags & CF_ZOMBIE)
1401 return 0; 1701 return;
1402 1702
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro); 1703 slf_destroy (aTHX_ coro);
1405 1704
1406 coro->flags |= CF_DESTROYED; 1705 coro->flags |= CF_ZOMBIE;
1407 1706
1408 if (coro->flags & CF_READY) 1707 if (coro->flags & CF_READY)
1409 { 1708 {
1410 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1709 /* reduce nready, as destroying a ready coro effectively unreadies it */
1411 /* alternative: look through all ready queues and remove the coro */ 1710 /* alternative: look through all ready queues and remove the coro */
1412 --coro_nready; 1711 --coro_nready;
1413 } 1712 }
1414 else 1713 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1714 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1715
1417 if (coro->mainstack && coro->mainstack != main_mainstack)
1418 {
1419 struct coro temp;
1420
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435
1436 if (coro->next) coro->next->prev = coro->prev; 1716 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1717 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1718 if (coro == coro_first) coro_first = coro->next;
1439 1719
1440 return 1; 1720 if (coro->mainstack
1721 && coro->mainstack != main_mainstack
1722 && coro->slot
1723 && !PL_dirty)
1724 destroy_perl (aTHX_ coro);
1725
1726 cctx_destroy (coro->cctx);
1727 SvREFCNT_dec (coro->startcv);
1728 SvREFCNT_dec (coro->args);
1729 SvREFCNT_dec (coro->swap_sv);
1730 SvREFCNT_dec (CORO_THROW);
1731
1732 coro_call_on_destroy (aTHX_ coro);
1733
1734 /* more destruction mayhem in coro_state_free */
1441} 1735}
1442 1736
1443static int 1737static int
1444coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1738coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1445{ 1739{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1740 struct coro *coro = (struct coro *)mg->mg_ptr;
1447 mg->mg_ptr = 0; 1741 mg->mg_ptr = 0;
1448 1742
1449 coro->hv = 0;
1450
1451 if (--coro->refcnt < 0)
1452 {
1453 coro_state_destroy (aTHX_ coro); 1743 coro_state_destroy (aTHX_ coro);
1744 SvREFCNT_dec (coro->on_destroy);
1745 SvREFCNT_dec (coro->status);
1746
1454 Safefree (coro); 1747 Safefree (coro);
1455 }
1456 1748
1457 return 0; 1749 return 0;
1458} 1750}
1459 1751
1460static int 1752static int
1461coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1753coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1462{ 1754{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1755 /* called when perl clones the current process the slow way (windows process emulation) */
1464 1756 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1465 ++coro->refcnt; 1757 mg->mg_ptr = 0;
1758 mg->mg_virtual = 0;
1466 1759
1467 return 0; 1760 return 0;
1468} 1761}
1469 1762
1470static MGVTBL coro_state_vtbl = { 1763static MGVTBL coro_state_vtbl = {
… …
1498/** Coro ********************************************************************/ 1791/** Coro ********************************************************************/
1499 1792
1500INLINE void 1793INLINE void
1501coro_enq (pTHX_ struct coro *coro) 1794coro_enq (pTHX_ struct coro *coro)
1502{ 1795{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1796 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1797
1506INLINE SV * 1798 SvREFCNT_inc_NN (coro->hv);
1799
1800 coro->next_ready = 0;
1801 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1802 ready [1] = coro;
1803}
1804
1805INLINE struct coro *
1507coro_deq (pTHX) 1806coro_deq (pTHX)
1508{ 1807{
1509 int prio; 1808 int prio;
1510 1809
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1810 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1811 {
1513 return av_shift (coro_ready [prio]); 1812 struct coro **ready = coro_ready [prio];
1813
1814 if (ready [0])
1815 {
1816 struct coro *coro = ready [0];
1817 ready [0] = coro->next_ready;
1818 return coro;
1819 }
1820 }
1514 1821
1515 return 0; 1822 return 0;
1823}
1824
1825static void
1826invoke_sv_ready_hook_helper (void)
1827{
1828 dTHX;
1829 dSP;
1830
1831 ENTER;
1832 SAVETMPS;
1833
1834 PUSHMARK (SP);
1835 PUTBACK;
1836 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1837
1838 FREETMPS;
1839 LEAVE;
1516} 1840}
1517 1841
1518static int 1842static int
1519api_ready (pTHX_ SV *coro_sv) 1843api_ready (pTHX_ SV *coro_sv)
1520{ 1844{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1845 struct coro *coro = SvSTATE (coro_sv);
1529 1846
1530 if (coro->flags & CF_READY) 1847 if (coro->flags & CF_READY)
1531 return 0; 1848 return 0;
1532 1849
1533 coro->flags |= CF_READY; 1850 coro->flags |= CF_READY;
1534 1851
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1852 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1853
1541 if (sv_hook) 1854 if (!coro_nready++)
1542 { 1855 if (coroapi.readyhook)
1543 dSP; 1856 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1857
1559 return 1; 1858 return 1;
1560} 1859}
1561 1860
1562static int 1861static int
1563api_is_ready (pTHX_ SV *coro_sv) 1862api_is_ready (pTHX_ SV *coro_sv)
1564{ 1863{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1864 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1865}
1567 1866
1867/* expects to own a reference to next->hv */
1568INLINE void 1868INLINE void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1869prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1870{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1871 SV *prev_sv = SvRV (coro_current);
1872
1610 ta->prev = SvSTATE_hv (prev_sv); 1873 ta->prev = SvSTATE_hv (prev_sv);
1874 ta->next = next;
1875
1611 TRANSFER_CHECK (*ta); 1876 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1877
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1878 SvRV_set (coro_current, (SV *)next->hv);
1615 1879
1616 free_coro_mortal (aTHX); 1880 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1881 coro_mortal = prev_sv;
1618} 1882}
1619 1883
1884static void
1885prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1886{
1887 for (;;)
1888 {
1889 struct coro *next = coro_deq (aTHX);
1890
1891 if (expect_true (next))
1892 {
1893 /* cannot transfer to destroyed coros, skip and look for next */
1894 if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1895 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1896 else
1897 {
1898 next->flags &= ~CF_READY;
1899 --coro_nready;
1900
1901 prepare_schedule_to (aTHX_ ta, next);
1902 break;
1903 }
1904 }
1905 else
1906 {
1907 /* nothing to schedule: call the idle handler */
1908 if (SvROK (sv_idle)
1909 && SvOBJECT (SvRV (sv_idle)))
1910 {
1911 if (SvRV (sv_idle) == SvRV (coro_current))
1912 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1913
1914 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1915 api_ready (aTHX_ SvRV (sv_idle));
1916 --coro_nready;
1917 }
1918 else
1919 {
1920 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1921 dSP;
1922
1923 ENTER;
1924 SAVETMPS;
1925
1926 PUSHMARK (SP);
1927 PUTBACK;
1928 call_sv (sv_idle, G_VOID | G_DISCARD);
1929
1930 FREETMPS;
1931 LEAVE;
1932 }
1933 }
1934 }
1935}
1936
1620INLINE void 1937INLINE void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 1938prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 1939{
1623 api_ready (aTHX_ coro_current); 1940 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 1941 prepare_schedule (aTHX_ ta);
… …
1643{ 1960{
1644 struct coro_transfer_args ta; 1961 struct coro_transfer_args ta;
1645 1962
1646 prepare_schedule (aTHX_ &ta); 1963 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 1964 TRANSFER (ta, 1);
1965}
1966
1967static void
1968api_schedule_to (pTHX_ SV *coro_sv)
1969{
1970 struct coro_transfer_args ta;
1971 struct coro *next = SvSTATE (coro_sv);
1972
1973 SvREFCNT_inc_NN (coro_sv);
1974 prepare_schedule_to (aTHX_ &ta, next);
1648} 1975}
1649 1976
1650static int 1977static int
1651api_cede (pTHX) 1978api_cede (pTHX)
1652{ 1979{
… …
1681static void 2008static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 2009api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 2010{
1684 struct coro *coro = SvSTATE (coro_sv); 2011 struct coro *coro = SvSTATE (coro_sv);
1685 2012
2013 if (coro->flags & CF_RUNNING)
2014 croak ("cannot enable tracing on a running coroutine, caught");
2015
1686 if (flags & CC_TRACE) 2016 if (flags & CC_TRACE)
1687 { 2017 {
1688 if (!coro->cctx) 2018 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 2019 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 2020 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 2021 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 2022
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2023 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 2024 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2025 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 2026 {
… …
1699 if (coro->flags & CF_RUNNING) 2029 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 2030 PL_runops = RUNOPS_DEFAULT;
1701 else 2031 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 2032 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 2033 }
2034}
2035
2036static void
2037coro_push_av (pTHX_ AV *av, I32 gimme_v)
2038{
2039 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2040 {
2041 dSP;
2042
2043 if (gimme_v == G_SCALAR)
2044 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2045 else
2046 {
2047 int i;
2048 EXTEND (SP, AvFILLp (av) + 1);
2049
2050 for (i = 0; i <= AvFILLp (av); ++i)
2051 PUSHs (AvARRAY (av)[i]);
2052 }
2053
2054 PUTBACK;
2055 }
2056}
2057
2058static void
2059coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2060{
2061 if (!coro->on_destroy)
2062 coro->on_destroy = newAV ();
2063
2064 av_push (coro->on_destroy, cb);
2065}
2066
2067static void
2068slf_destroy_join (pTHX_ struct CoroSLF *frame)
2069{
2070 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2071}
2072
2073static int
2074slf_check_join (pTHX_ struct CoroSLF *frame)
2075{
2076 struct coro *coro = (struct coro *)frame->data;
2077
2078 if (!coro->status)
2079 return 1;
2080
2081 frame->destroy = 0;
2082
2083 coro_push_av (aTHX_ coro->status, GIMME_V);
2084
2085 SvREFCNT_dec ((SV *)coro->hv);
2086
2087 return 0;
2088}
2089
2090static void
2091slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2092{
2093 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2094
2095 if (items > 1)
2096 croak ("join called with too many arguments");
2097
2098 if (coro->status)
2099 frame->prepare = prepare_nop;
2100 else
2101 {
2102 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2103 frame->prepare = prepare_schedule;
2104 }
2105
2106 frame->check = slf_check_join;
2107 frame->destroy = slf_destroy_join;
2108 frame->data = (void *)coro;
2109 SvREFCNT_inc (coro->hv);
2110}
2111
2112static void
2113coro_call_on_destroy (pTHX_ struct coro *coro)
2114{
2115 AV *od = coro->on_destroy;
2116
2117 if (!od)
2118 return;
2119
2120 while (AvFILLp (od) >= 0)
2121 {
2122 SV *cb = sv_2mortal (av_pop (od));
2123
2124 /* coro hv's (and only hv's at the moment) are supported as well */
2125 if (SvSTATEhv_p (aTHX_ cb))
2126 api_ready (aTHX_ cb);
2127 else
2128 {
2129 dSP; /* don't disturb outer sp */
2130 PUSHMARK (SP);
2131
2132 if (coro->status)
2133 {
2134 PUTBACK;
2135 coro_push_av (aTHX_ coro->status, G_ARRAY);
2136 SPAGAIN;
2137 }
2138
2139 PUTBACK;
2140 call_sv (cb, G_VOID | G_DISCARD);
2141 }
2142 }
2143}
2144
2145static void
2146coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2147{
2148 AV *av;
2149
2150 if (coro->status)
2151 {
2152 av = coro->status;
2153 av_clear (av);
2154 }
2155 else
2156 av = coro->status = newAV ();
2157
2158 /* items are actually not so common, so optimise for this case */
2159 if (items)
2160 {
2161 int i;
2162
2163 av_extend (av, items - 1);
2164
2165 for (i = 0; i < items; ++i)
2166 av_push (av, SvREFCNT_inc_NN (arg [i]));
2167 }
2168}
2169
2170static void
2171slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2172{
2173 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2174 api_ready (aTHX_ sv_manager);
2175
2176 frame->prepare = prepare_schedule;
2177 frame->check = slf_check_repeat;
2178
2179 /* as a minor optimisation, we could unwind all stacks here */
2180 /* but that puts extra pressure on pp_slf, and is not worth much */
2181 /*coro_unwind_stacks (aTHX);*/
2182}
2183
2184static void
2185slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{
2187 HV *coro_hv = (HV *)SvRV (coro_current);
2188
2189 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2190 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2191}
2192
2193static void
2194slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2195{
2196 HV *coro_hv;
2197 struct coro *coro;
2198
2199 if (items <= 0)
2200 croak ("Coro::cancel called without coro object,");
2201
2202 coro = SvSTATE (arg [0]);
2203 coro_hv = coro->hv;
2204
2205 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2206
2207 if (expect_false (coro->flags & CF_NOCANCEL))
2208 {
2209 /* coro currently busy cancelling something, so just notify it */
2210 coro->slf_frame.data = (void *)coro;
2211
2212 frame->prepare = prepare_nop;
2213 frame->check = slf_check_nop;
2214 }
2215 else if (coro_hv == (HV *)SvRV (coro_current))
2216 {
2217 /* cancelling the current coro is allowed, and equals terminate */
2218 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2219 }
2220 else
2221 {
2222 struct coro *self = SvSTATE_current;
2223
2224 /* otherwise we cancel directly, purely for speed reasons
2225 * unfortunately, this requires some magic trickery, as
2226 * somebody else could cancel us, so we have to fight the cancellation.
2227 * this is ugly, and hopefully fully worth the extra speed.
2228 * besides, I can't get the slow-but-safe version working...
2229 */
2230 slf_frame.data = 0;
2231 self->flags |= CF_NOCANCEL;
2232 coro_state_destroy (aTHX_ coro);
2233 self->flags &= ~CF_NOCANCEL;
2234
2235 if (slf_frame.data)
2236 {
2237 /* while we were busy we have been cancelled, so terminate */
2238 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2239 }
2240 else
2241 {
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 }
2246}
2247
2248static int
2249slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2250{
2251 frame->prepare = 0;
2252 coro_unwind_stacks (aTHX);
2253
2254 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2255
2256 return 1;
2257}
2258
2259static int
2260safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2261{
2262 if (coro->cctx)
2263 croak ("coro inside C callback, unable to cancel at this time, caught");
2264
2265 if (coro->flags & CF_NEW)
2266 {
2267 coro_set_status (aTHX_ coro, arg, items);
2268 coro_state_destroy (aTHX_ coro);
2269 }
2270 else
2271 {
2272 if (!coro->slf_frame.prepare)
2273 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2274
2275 slf_destroy (aTHX_ coro);
2276
2277 coro_set_status (aTHX_ coro, arg, items);
2278 coro->slf_frame.prepare = prepare_nop;
2279 coro->slf_frame.check = slf_check_safe_cancel;
2280
2281 api_ready (aTHX_ (SV *)coro->hv);
2282 }
2283
2284 return 1;
2285}
2286
2287/*****************************************************************************/
2288/* async pool handler */
2289
2290static int
2291slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2292{
2293 HV *hv = (HV *)SvRV (coro_current);
2294 struct coro *coro = (struct coro *)frame->data;
2295
2296 if (!coro->invoke_cb)
2297 return 1; /* loop till we have invoke */
2298 else
2299 {
2300 hv_store (hv, "desc", sizeof ("desc") - 1,
2301 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2302
2303 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2304
2305 {
2306 dSP;
2307 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2308 PUTBACK;
2309 }
2310
2311 SvREFCNT_dec (GvAV (PL_defgv));
2312 GvAV (PL_defgv) = coro->invoke_av;
2313 coro->invoke_av = 0;
2314
2315 return 0;
2316 }
2317}
2318
2319static void
2320slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2321{
2322 HV *hv = (HV *)SvRV (coro_current);
2323 struct coro *coro = SvSTATE_hv ((SV *)hv);
2324
2325 if (expect_true (coro->saved_deffh))
2326 {
2327 /* subsequent iteration */
2328 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2329 coro->saved_deffh = 0;
2330
2331 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2332 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2333 {
2334 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2335 return;
2336 }
2337 else
2338 {
2339 av_clear (GvAV (PL_defgv));
2340 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2341
2342 coro->prio = 0;
2343
2344 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2345 api_trace (aTHX_ coro_current, 0);
2346
2347 frame->prepare = prepare_schedule;
2348 av_push (av_async_pool, SvREFCNT_inc (hv));
2349 }
2350 }
2351 else
2352 {
2353 /* first iteration, simply fall through */
2354 frame->prepare = prepare_nop;
2355 }
2356
2357 frame->check = slf_check_pool_handler;
2358 frame->data = (void *)coro;
2359}
2360
2361/*****************************************************************************/
2362/* rouse callback */
2363
2364#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2365
2366static void
2367coro_rouse_callback (pTHX_ CV *cv)
2368{
2369 dXSARGS;
2370 SV *data = (SV *)S_GENSUB_ARG;
2371
2372 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2373 {
2374 /* first call, set args */
2375 SV *coro = SvRV (data);
2376 AV *av = newAV ();
2377
2378 SvRV_set (data, (SV *)av);
2379
2380 /* better take a full copy of the arguments */
2381 while (items--)
2382 av_store (av, items, newSVsv (ST (items)));
2383
2384 api_ready (aTHX_ coro);
2385 SvREFCNT_dec (coro);
2386 }
2387
2388 XSRETURN_EMPTY;
2389}
2390
2391static int
2392slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2393{
2394 SV *data = (SV *)frame->data;
2395
2396 if (CORO_THROW)
2397 return 0;
2398
2399 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2400 return 1;
2401
2402 /* now push all results on the stack */
2403 {
2404 dSP;
2405 AV *av = (AV *)SvRV (data);
2406 int i;
2407
2408 EXTEND (SP, AvFILLp (av) + 1);
2409 for (i = 0; i <= AvFILLp (av); ++i)
2410 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2411
2412 /* we have stolen the elements, so set length to zero and free */
2413 AvFILLp (av) = -1;
2414 av_undef (av);
2415
2416 PUTBACK;
2417 }
2418
2419 return 0;
2420}
2421
2422static void
2423slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2424{
2425 SV *cb;
2426
2427 if (items)
2428 cb = arg [0];
2429 else
2430 {
2431 struct coro *coro = SvSTATE_current;
2432
2433 if (!coro->rouse_cb)
2434 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2435
2436 cb = sv_2mortal (coro->rouse_cb);
2437 coro->rouse_cb = 0;
2438 }
2439
2440 if (!SvROK (cb)
2441 || SvTYPE (SvRV (cb)) != SVt_PVCV
2442 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2443 croak ("Coro::rouse_wait called with illegal callback argument,");
2444
2445 {
2446 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2447 SV *data = (SV *)S_GENSUB_ARG;
2448
2449 frame->data = (void *)data;
2450 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2451 frame->check = slf_check_rouse_wait;
2452 }
2453}
2454
2455static SV *
2456coro_new_rouse_cb (pTHX)
2457{
2458 HV *hv = (HV *)SvRV (coro_current);
2459 struct coro *coro = SvSTATE_hv (hv);
2460 SV *data = newRV_inc ((SV *)hv);
2461 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2462
2463 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2464 SvREFCNT_dec (data); /* magicext increases the refcount */
2465
2466 SvREFCNT_dec (coro->rouse_cb);
2467 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2468
2469 return cb;
1704} 2470}
1705 2471
1706/*****************************************************************************/ 2472/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2473/* schedule-like-function opcode (SLF) */
1708 2474
… …
1758 frame->prepare = prepare_schedule; 2524 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2525 frame->check = slf_check_nop;
1760} 2526}
1761 2527
1762static void 2528static void
2529slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2530{
2531 struct coro *next = (struct coro *)slf_frame.data;
2532
2533 SvREFCNT_inc_NN (next->hv);
2534 prepare_schedule_to (aTHX_ ta, next);
2535}
2536
2537static void
2538slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2539{
2540 if (!items)
2541 croak ("Coro::schedule_to expects a coroutine argument, caught");
2542
2543 frame->data = (void *)SvSTATE (arg [0]);
2544 frame->prepare = slf_prepare_schedule_to;
2545 frame->check = slf_check_nop;
2546}
2547
2548static void
2549slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2550{
2551 api_ready (aTHX_ SvRV (coro_current));
2552
2553 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2554}
2555
2556static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2557slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2558{
1765 frame->prepare = prepare_cede; 2559 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop; 2560 frame->check = slf_check_nop;
1767} 2561}
… …
1769static void 2563static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2564slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{ 2565{
1772 frame->prepare = prepare_cede_notself; 2566 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop; 2567 frame->check = slf_check_nop;
2568}
2569
2570/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2571static void
2572slf_destroy (pTHX_ struct coro *coro)
2573{
2574 /* this callback is reserved for slf functions needing to do cleanup */
2575 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2576 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2577
2578 /*
2579 * The on_destroy above most likely is from an SLF call.
2580 * Since by definition the SLF call will not finish when we destroy
2581 * the coro, we will have to force-finish it here, otherwise
2582 * cleanup functions cannot call SLF functions.
2583 */
2584 coro->slf_frame.prepare = 0;
1774} 2585}
1775 2586
1776/* 2587/*
1777 * these not obviously related functions are all rolled into one 2588 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same 2589 * function to increase chances that they all will call transfer with the same
… …
1835 } 2646 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2647 while (slf_frame.check (aTHX_ &slf_frame));
1837 2648
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2649 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2650
2651 /* exception handling */
2652 if (expect_false (CORO_THROW))
2653 {
2654 SV *exception = sv_2mortal (CORO_THROW);
2655
2656 CORO_THROW = 0;
2657 sv_setsv (ERRSV, exception);
2658 croak (0);
2659 }
2660
1840 /* return value handling - mostly like entersub */ 2661 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2662 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2663 if (GIMME_V == G_SCALAR
2664 && expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1843 { 2665 {
1844 dSP; 2666 dSP;
1845 SV **bot = PL_stack_base + checkmark; 2667 SV **bot = PL_stack_base + checkmark;
1846 2668
1847 if (sp == bot) /* too few, push undef */ 2669 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef; 2670 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */ 2671 else /* too many, take last one */
1850 bot [1] = *sp; 2672 bot [1] = *sp;
1851 2673
1852 SP = bot + 1; 2674 SP = bot + 1;
1853 2675
1854 PUTBACK; 2676 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2677 }
1866 2678
1867 return NORMAL; 2679 return NORMAL;
1868} 2680}
1869 2681
… …
1897 if (PL_op->op_flags & OPf_STACKED) 2709 if (PL_op->op_flags & OPf_STACKED)
1898 { 2710 {
1899 if (items > slf_arga) 2711 if (items > slf_arga)
1900 { 2712 {
1901 slf_arga = items; 2713 slf_arga = items;
1902 free (slf_argv); 2714 Safefree (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *)); 2715 New (0, slf_argv, slf_arga, SV *);
1904 } 2716 }
1905 2717
1906 slf_argc = items; 2718 slf_argc = items;
1907 2719
1908 for (i = 0; i < items; ++i) 2720 for (i = 0; i < items; ++i)
… …
1910 } 2722 }
1911 else 2723 else
1912 slf_argc = 0; 2724 slf_argc = 0;
1913 2725
1914 PL_op->op_ppaddr = pp_slf; 2726 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2727 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2728
1917 PL_op = (OP *)&slf_restore; 2729 PL_op = (OP *)&slf_restore;
2730}
2731
2732/*****************************************************************************/
2733/* dynamic wind */
2734
2735static void
2736on_enterleave_call (pTHX_ SV *cb)
2737{
2738 dSP;
2739
2740 PUSHSTACK;
2741
2742 PUSHMARK (SP);
2743 PUTBACK;
2744 call_sv (cb, G_VOID | G_DISCARD);
2745 SPAGAIN;
2746
2747 POPSTACK;
2748}
2749
2750static SV *
2751coro_avp_pop_and_free (pTHX_ AV **avp)
2752{
2753 AV *av = *avp;
2754 SV *res = av_pop (av);
2755
2756 if (AvFILLp (av) < 0)
2757 {
2758 *avp = 0;
2759 SvREFCNT_dec (av);
2760 }
2761
2762 return res;
2763}
2764
2765static void
2766coro_pop_on_enter (pTHX_ void *coro)
2767{
2768 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2769 SvREFCNT_dec (cb);
2770}
2771
2772static void
2773coro_pop_on_leave (pTHX_ void *coro)
2774{
2775 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2776 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2777}
1919 2778
1920/*****************************************************************************/ 2779/*****************************************************************************/
1921/* PerlIO::cede */ 2780/* PerlIO::cede */
1922 2781
… …
1991 PerlIOBuf_get_cnt, 2850 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2851 PerlIOBuf_set_ptrcnt,
1993}; 2852};
1994 2853
1995/*****************************************************************************/ 2854/*****************************************************************************/
2855/* Coro::Semaphore & Coro::Signal */
2856
2857static SV *
2858coro_waitarray_new (pTHX_ int count)
2859{
2860 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2861 AV *av = newAV ();
2862 SV **ary;
2863
2864 /* unfortunately, building manually saves memory */
2865 Newx (ary, 2, SV *);
2866 AvALLOC (av) = ary;
2867#if PERL_VERSION_ATLEAST (5,10,0)
2868 AvARRAY (av) = ary;
2869#else
2870 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2871 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2872 SvPVX ((SV *)av) = (char *)ary;
2873#endif
2874 AvMAX (av) = 1;
2875 AvFILLp (av) = 0;
2876 ary [0] = newSViv (count);
2877
2878 return newRV_noinc ((SV *)av);
2879}
2880
1996/* Coro::Semaphore */ 2881/* semaphore */
1997 2882
1998static void 2883static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2884coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2885{
2001 SV *count_sv = AvARRAY (av)[0]; 2886 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2898 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2899 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2900 cb = av_shift (av);
2016 2901
2017 if (SvOBJECT (cb)) 2902 if (SvOBJECT (cb))
2903 {
2018 api_ready (aTHX_ cb); 2904 api_ready (aTHX_ cb);
2019 else 2905 --count;
2020 croak ("callbacks not yet supported"); 2906 }
2907 else if (SvTYPE (cb) == SVt_PVCV)
2908 {
2909 dSP;
2910 PUSHMARK (SP);
2911 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2912 PUTBACK;
2913 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2914 }
2021 2915
2022 SvREFCNT_dec (cb); 2916 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2917 }
2026} 2918}
2027 2919
2028static void 2920static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2921coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2030{ 2922{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2923 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2924 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2033} 2925}
2034 2926
2035static int 2927static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2928slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2929{
2038 AV *av = (AV *)frame->data; 2930 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2931 SV *count_sv = AvARRAY (av)[0];
2932 SV *coro_hv = SvRV (coro_current);
2040 2933
2934 /* if we are about to throw, don't actually acquire the lock, just throw */
2935 if (CORO_THROW)
2936 return 0;
2041 if (SvIVX (count_sv) > 0) 2937 else if (SvIVX (count_sv) > 0)
2042 { 2938 {
2043 SvSTATE_current->on_destroy = 0; 2939 frame->destroy = 0;
2940
2941 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2942 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2943 else
2944 coro_semaphore_adjust (aTHX_ av, 0);
2945
2045 return 0; 2946 return 0;
2046 } 2947 }
2047 else 2948 else
2048 { 2949 {
2049 int i; 2950 int i;
2050 /* if we were woken up but can't down, we look through the whole */ 2951 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */ 2952 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */ 2953 /* this avoids some degenerate memory usage cases */
2053 2954 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current)) 2955 if (AvARRAY (av)[i] == coro_hv)
2056 return 1; 2956 return 1;
2057 2957
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2958 av_push (av, SvREFCNT_inc (coro_hv));
2059 return 1; 2959 return 1;
2060 } 2960 }
2061} 2961}
2062 2962
2063static void 2963static int
2964slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2965{
2966 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2967}
2968
2969static int
2970slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2971{
2972 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2973}
2974
2975static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2976slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 2977{
2066 AV *av = (AV *)SvRV (arg [0]); 2978 AV *av = (AV *)SvRV (arg [0]);
2067 2979
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 2980 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 2981 {
2070 frame->data = (void *)av; 2982 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 2983 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 2984 }
2074 else 2985 else
2075 { 2986 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2987 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 2988
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2989 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 2990 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 2991 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2992 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2993 frame->destroy = coro_semaphore_destroy;
2085 } 2994 }
2995}
2086 2996
2997static void
2998slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2999{
3000 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 3001 frame->check = slf_check_semaphore_down;
2088
2089} 3002}
2090 3003
2091/*****************************************************************************/ 3004static void
2092/* gensub: simple closure generation utility */ 3005slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 3006{
2102 CV *cv = (CV *)newSV (0); 3007 if (items >= 2)
3008 {
3009 /* callback form */
3010 AV *av = (AV *)SvRV (arg [0]);
3011 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 3012
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3013 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 3014
2106 CvANON_on (cv); 3015 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 3016 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 3017
2111 return newRV_noinc ((SV *)cv); 3018 frame->prepare = prepare_nop;
3019 frame->check = slf_check_nop;
3020 }
3021 else
3022 {
3023 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3024 frame->check = slf_check_semaphore_wait;
3025 }
3026}
3027
3028/* signal */
3029
3030static void
3031coro_signal_wake (pTHX_ AV *av, int count)
3032{
3033 SvIVX (AvARRAY (av)[0]) = 0;
3034
3035 /* now signal count waiters */
3036 while (count > 0 && AvFILLp (av) > 0)
3037 {
3038 SV *cb;
3039
3040 /* swap first two elements so we can shift a waiter */
3041 cb = AvARRAY (av)[0];
3042 AvARRAY (av)[0] = AvARRAY (av)[1];
3043 AvARRAY (av)[1] = cb;
3044
3045 cb = av_shift (av);
3046
3047 if (SvTYPE (cb) == SVt_PVCV)
3048 {
3049 dSP;
3050 PUSHMARK (SP);
3051 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3052 PUTBACK;
3053 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3054 }
3055 else
3056 {
3057 api_ready (aTHX_ cb);
3058 sv_setiv (cb, 0); /* signal waiter */
3059 }
3060
3061 SvREFCNT_dec (cb);
3062
3063 --count;
3064 }
3065}
3066
3067static int
3068slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3069{
3070 /* if we are about to throw, also stop waiting */
3071 return SvROK ((SV *)frame->data) && !CORO_THROW;
3072}
3073
3074static void
3075slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3076{
3077 AV *av = (AV *)SvRV (arg [0]);
3078
3079 if (items >= 2)
3080 {
3081 SV *cb_cv = s_get_cv_croak (arg [1]);
3082 av_push (av, SvREFCNT_inc_NN (cb_cv));
3083
3084 if (SvIVX (AvARRAY (av)[0]))
3085 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3086
3087 frame->prepare = prepare_nop;
3088 frame->check = slf_check_nop;
3089 }
3090 else if (SvIVX (AvARRAY (av)[0]))
3091 {
3092 SvIVX (AvARRAY (av)[0]) = 0;
3093 frame->prepare = prepare_nop;
3094 frame->check = slf_check_nop;
3095 }
3096 else
3097 {
3098 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3099
3100 av_push (av, waiter);
3101
3102 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3103 frame->prepare = prepare_schedule;
3104 frame->check = slf_check_signal_wait;
3105 }
2112} 3106}
2113 3107
2114/*****************************************************************************/ 3108/*****************************************************************************/
2115/* Coro::AIO */ 3109/* Coro::AIO */
2116 3110
… …
2127 3121
2128static void 3122static void
2129coro_aio_callback (pTHX_ CV *cv) 3123coro_aio_callback (pTHX_ CV *cv)
2130{ 3124{
2131 dXSARGS; 3125 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 3126 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 3127 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 3128 SV *data_sv = newSV (sizeof (struct io_state));
2135 3129
2136 av_extend (state, items); 3130 av_extend (state, items - 1);
2137 3131
2138 sv_upgrade (data_sv, SVt_PV); 3132 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 3133 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 3134 SvPOK_only (data_sv);
2141 3135
… …
2166static int 3160static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3161slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 3162{
2169 AV *state = (AV *)frame->data; 3163 AV *state = (AV *)frame->data;
2170 3164
3165 /* if we are about to throw, return early */
3166 /* this does not cancel the aio request, but at least */
3167 /* it quickly returns */
3168 if (CORO_THROW)
3169 return 0;
3170
2171 /* one element that is an RV? repeat! */ 3171 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1; 3173 return 1;
2174 3174
2175 /* restore status */ 3175 /* restore status */
… …
2245 3245
2246 for (i = 0; i < items; ++i) 3246 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 3247 PUSHs (arg [i]);
2248 3248
2249 /* now push the callback closure */ 3249 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3250 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 3251
2252 /* now call the AIO function - we assume our request is uncancelable */ 3252 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 3253 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 3254 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 3255 }
2256 3256
2257 /* now that the requets is going, we loop toll we have a result */ 3257 /* now that the request is going, we loop till we have a result */
2258 frame->data = (void *)state; 3258 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule; 3259 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req; 3260 frame->check = slf_check_aio_req;
2261} 3261}
2262 3262
… …
2269 3269
2270 XSRETURN_EMPTY; 3270 XSRETURN_EMPTY;
2271} 3271}
2272 3272
2273/*****************************************************************************/ 3273/*****************************************************************************/
3274
3275#if CORO_CLONE
3276# include "clone.c"
3277#endif
3278
3279/*****************************************************************************/
3280
3281static SV *
3282coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3283{
3284 SV *coro_sv;
3285 struct coro *coro;
3286 MAGIC *mg;
3287 HV *hv;
3288 SV *cb;
3289 int i;
3290
3291 if (argc > 0)
3292 {
3293 cb = s_get_cv_croak (argv [0]);
3294
3295 if (!is_coro)
3296 {
3297 if (CvISXSUB (cb))
3298 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3299
3300 if (!CvROOT (cb))
3301 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3302 }
3303 }
3304
3305 Newz (0, coro, 1, struct coro);
3306 coro->args = newAV ();
3307 coro->flags = CF_NEW;
3308
3309 if (coro_first) coro_first->prev = coro;
3310 coro->next = coro_first;
3311 coro_first = coro;
3312
3313 coro->hv = hv = newHV ();
3314 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3315 mg->mg_flags |= MGf_DUP;
3316 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3317
3318 if (argc > 0)
3319 {
3320 av_extend (coro->args, argc + is_coro - 1);
3321
3322 if (is_coro)
3323 {
3324 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3325 cb = (SV *)cv_coro_run;
3326 }
3327
3328 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3329
3330 for (i = 1; i < argc; i++)
3331 av_push (coro->args, newSVsv (argv [i]));
3332 }
3333
3334 return coro_sv;
3335}
2274 3336
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3337MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3338
2277PROTOTYPES: DISABLE 3339PROTOTYPES: DISABLE
2278 3340
… …
2283 coro_thx = PERL_GET_CONTEXT; 3345 coro_thx = PERL_GET_CONTEXT;
2284# endif 3346# endif
2285#endif 3347#endif
2286 BOOT_PAGESIZE; 3348 BOOT_PAGESIZE;
2287 3349
3350 cctx_current = cctx_new_empty ();
3351
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3352 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3353 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3354
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3355 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3356 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2311 3375
2312 { 3376 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3377 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3378
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3379 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3380 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3381
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3382 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3383 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3384 }
2323 3385
2324 coroapi.ver = CORO_API_VERSION; 3386 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3387 coroapi.rev = CORO_API_REVISION;
2326 3388
… …
2331 coroapi.prepare_nop = prepare_nop; 3393 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule; 3394 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede; 3395 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself; 3396 coroapi.prepare_cede_notself = prepare_cede_notself;
2335 3397
2336 { 3398 time_init (aTHX);
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338 3399
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
2344
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3400 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2346} 3401}
2347 3402
2348SV * 3403SV *
2349new (char *klass, ...) 3404new (SV *klass, ...)
3405 ALIAS:
3406 Coro::new = 1
2350 CODE: 3407 CODE:
2351{ 3408 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3409 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3410 RETVAL
2376 3411
2377void 3412void
2378transfer (...) 3413transfer (...)
2379 PROTOTYPE: $$ 3414 PROTOTYPE: $$
2380 CODE: 3415 CODE:
2381 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3416 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382 3417
2383bool
2384_destroy (SV *coro_sv)
2385 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2387 OUTPUT:
2388 RETVAL
2389
2390void 3418void
2391_exit (int code) 3419_exit (int code)
2392 PROTOTYPE: $ 3420 PROTOTYPE: $
2393 CODE: 3421 CODE:
2394 _exit (code); 3422 _exit (code);
3423
3424SV *
3425clone (Coro::State coro)
3426 CODE:
3427{
3428#if CORO_CLONE
3429 struct coro *ncoro = coro_clone (aTHX_ coro);
3430 MAGIC *mg;
3431 /* TODO: too much duplication */
3432 ncoro->hv = newHV ();
3433 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3434 mg->mg_flags |= MGf_DUP;
3435 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3436#else
3437 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3438#endif
3439}
3440 OUTPUT:
3441 RETVAL
2395 3442
2396int 3443int
2397cctx_stacksize (int new_stacksize = 0) 3444cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3445 PROTOTYPE: ;$
2399 CODE: 3446 CODE:
… …
2449 eval = 1 3496 eval = 1
2450 CODE: 3497 CODE:
2451{ 3498{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3499 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3500 {
2454 struct coro temp; 3501 struct coro *current = SvSTATE_current;
3502 struct CoroSLF slf_save;
2455 3503
2456 if (!(coro->flags & CF_RUNNING)) 3504 if (current != coro)
2457 { 3505 {
2458 PUTBACK; 3506 PUTBACK;
2459 save_perl (aTHX_ &temp); 3507 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3508 load_perl (aTHX_ coro);
3509 /* the coro is most likely in an active SLF call.
3510 * while not strictly required (the code we execute is
3511 * not allowed to call any SLF functions), it's cleaner
3512 * to reinitialise the slf_frame and restore it later.
3513 * This might one day allow us to actually do SLF calls
3514 * from code executed here.
3515 */
3516 slf_save = slf_frame;
3517 slf_frame.prepare = 0;
3518 SPAGAIN;
2461 } 3519 }
2462 3520
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3521 PUSHSTACK;
3522
2469 PUSHMARK (SP); 3523 PUSHMARK (SP);
3524 PUTBACK;
2470 3525
2471 if (ix) 3526 if (ix)
2472 eval_sv (coderef, 0); 3527 eval_sv (coderef, 0);
2473 else 3528 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3529 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3530
2476 POPSTACK; 3531 POPSTACK;
2477 SPAGAIN; 3532 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3533
2483 if (!(coro->flags & CF_RUNNING)) 3534 if (current != coro)
2484 { 3535 {
3536 PUTBACK;
3537 slf_frame = slf_save;
2485 save_perl (aTHX_ coro); 3538 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3539 load_perl (aTHX_ current);
2487 SPAGAIN; 3540 SPAGAIN;
2488 } 3541 }
2489 } 3542 }
2490} 3543}
2491 3544
… …
2494 PROTOTYPE: $ 3547 PROTOTYPE: $
2495 ALIAS: 3548 ALIAS:
2496 is_ready = CF_READY 3549 is_ready = CF_READY
2497 is_running = CF_RUNNING 3550 is_running = CF_RUNNING
2498 is_new = CF_NEW 3551 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3552 is_destroyed = CF_ZOMBIE
3553 is_zombie = CF_ZOMBIE
3554 is_suspended = CF_SUSPENDED
2500 CODE: 3555 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3556 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3557 OUTPUT:
2503 RETVAL 3558 RETVAL
2504 3559
2505void 3560void
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3561throw (Coro::State self, SV *exception = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3562 PROTOTYPE: $;$
2508 CODE: 3563 CODE:
2509{ 3564{
2510 struct coro *current = SvSTATE_current; 3565 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3566 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2512 SvREFCNT_dec (*throwp); 3567 SvREFCNT_dec (*exceptionp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3568 SvGETMAGIC (exception);
3569 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2514} 3570}
2515 3571
2516void 3572void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3573api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$ 3574 PROTOTYPE: $;$
… …
2520 3576
2521SV * 3577SV *
2522has_cctx (Coro::State coro) 3578has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3579 PROTOTYPE: $
2524 CODE: 3580 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3581 /* maybe manage the running flag differently */
3582 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3583 OUTPUT:
2527 RETVAL 3584 RETVAL
2528 3585
2529int 3586int
2530is_traced (Coro::State coro) 3587is_traced (Coro::State coro)
… …
2550 3607
2551void 3608void
2552force_cctx () 3609force_cctx ()
2553 PROTOTYPE: 3610 PROTOTYPE:
2554 CODE: 3611 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3612 cctx_current->idle_sp = 0;
2556 3613
2557void 3614void
2558swap_defsv (Coro::State self) 3615swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3616 PROTOTYPE: $
2560 ALIAS: 3617 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3625 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3626
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3627 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3628 }
2572 3629
3630void
3631cancel (Coro::State self)
3632 CODE:
3633 coro_state_destroy (aTHX_ self);
3634
3635SV *
3636enable_times (int enabled = enable_times)
3637 CODE:
3638{
3639 RETVAL = boolSV (enable_times);
3640
3641 if (enabled != enable_times)
3642 {
3643 enable_times = enabled;
3644
3645 coro_times_update ();
3646 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3647 }
3648}
3649 OUTPUT:
3650 RETVAL
3651
3652void
3653times (Coro::State self)
3654 PPCODE:
3655{
3656 struct coro *current = SvSTATE (coro_current);
3657
3658 if (expect_false (current == self))
3659 {
3660 coro_times_update ();
3661 coro_times_add (SvSTATE (coro_current));
3662 }
3663
3664 EXTEND (SP, 2);
3665 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3666 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3667
3668 if (expect_false (current == self))
3669 coro_times_sub (SvSTATE (coro_current));
3670}
3671
3672void
3673swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3674 CODE:
3675{
3676 struct coro *current = SvSTATE_current;
3677
3678 if (current == coro)
3679 SWAP_SVS (current);
3680
3681 if (!coro->swap_sv)
3682 coro->swap_sv = newAV ();
3683
3684 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3685 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3686
3687 if (current == coro)
3688 SWAP_SVS (current);
3689}
3690
2573 3691
2574MODULE = Coro::State PACKAGE = Coro 3692MODULE = Coro::State PACKAGE = Coro
2575 3693
2576BOOT: 3694BOOT:
2577{ 3695{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3696 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3697 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3698 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3699 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3700 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3701 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3702 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3703 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2586 3704
3705 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3706 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3707 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3708 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3709
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3710 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3711
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3712 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3713 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3714 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3715 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3716 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3717 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3718
2599 { 3719 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3720 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3721
2602 coroapi.schedule = api_schedule; 3722 coroapi.schedule = api_schedule;
3723 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3724 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3725 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3726 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3727 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3728 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3729 coroapi.current = coro_current;
2609 3730
2610 GCoroAPI = &coroapi; 3731 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3732 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3733 SvREADONLY_on (sv);
2613 } 3734 }
2614} 3735}
3736
3737SV *
3738async (...)
3739 PROTOTYPE: &@
3740 CODE:
3741 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3742 api_ready (aTHX_ RETVAL);
3743 OUTPUT:
3744 RETVAL
3745
3746void
3747_destroy (Coro::State coro)
3748 CODE:
3749 /* used by the manager thread */
3750 coro_state_destroy (aTHX_ coro);
3751
3752void
3753on_destroy (Coro::State coro, SV *cb)
3754 CODE:
3755 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3756
3757void
3758join (...)
3759 CODE:
3760 CORO_EXECUTE_SLF_XS (slf_init_join);
3761
3762void
3763terminate (...)
3764 CODE:
3765 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3766
3767void
3768cancel (...)
3769 CODE:
3770 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3771
3772int
3773safe_cancel (Coro::State self, ...)
3774 C_ARGS: aTHX_ self, &ST (1), items - 1
2615 3775
2616void 3776void
2617schedule (...) 3777schedule (...)
2618 CODE: 3778 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3779 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3780
3781void
3782schedule_to (...)
3783 CODE:
3784 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3785
3786void
3787cede_to (...)
3788 CODE:
3789 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3790
2621void 3791void
2622cede (...) 3792cede (...)
2623 CODE: 3793 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3794 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3808void
2639_set_readyhook (SV *hook) 3809_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3810 PROTOTYPE: $
2641 CODE: 3811 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3812 SvREFCNT_dec (coro_readyhook);
3813 SvGETMAGIC (hook);
3814 if (SvOK (hook))
3815 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3816 coro_readyhook = newSVsv (hook);
3817 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3818 }
3819 else
3820 {
3821 coro_readyhook = 0;
3822 CORO_READYHOOK = 0;
3823 }
2644 3824
2645int 3825int
2646prio (Coro::State coro, int newprio = 0) 3826prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3827 PROTOTYPE: $;$
2648 ALIAS: 3828 ALIAS:
… …
2654 if (items > 1) 3834 if (items > 1)
2655 { 3835 {
2656 if (ix) 3836 if (ix)
2657 newprio = coro->prio - newprio; 3837 newprio = coro->prio - newprio;
2658 3838
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3839 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3840 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3841
2662 coro->prio = newprio; 3842 coro->prio = newprio;
2663 } 3843 }
2664} 3844}
2665 OUTPUT: 3845 OUTPUT:
… …
2679 CODE: 3859 CODE:
2680 RETVAL = coro_nready; 3860 RETVAL = coro_nready;
2681 OUTPUT: 3861 OUTPUT:
2682 RETVAL 3862 RETVAL
2683 3863
2684# for async_pool speedup
2685void 3864void
2686_pool_1 (SV *cb) 3865suspend (Coro::State self)
3866 PROTOTYPE: $
2687 CODE: 3867 CODE:
2688{ 3868 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 3869
2696 if (!invoke) 3870void
3871resume (Coro::State self)
3872 PROTOTYPE: $
3873 CODE:
3874 self->flags &= ~CF_SUSPENDED;
3875
3876void
3877_pool_handler (...)
3878 CODE:
3879 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3880
3881void
3882async_pool (SV *cv, ...)
3883 PROTOTYPE: &@
3884 PPCODE:
3885{
3886 HV *hv = (HV *)av_pop (av_async_pool);
3887 AV *av = newAV ();
3888 SV *cb = ST (0);
3889 int i;
3890
3891 av_extend (av, items - 2);
3892 for (i = 1; i < items; ++i)
3893 av_push (av, SvREFCNT_inc_NN (ST (i)));
3894
3895 if ((SV *)hv == &PL_sv_undef)
2697 { 3896 {
2698 SV *old = PL_diehook; 3897 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 3898 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 3899 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 3900 }
2703 3901
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 3902 {
2717 av_fill (defav, len - 1); 3903 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 3904
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3905 assert (!coro->invoke_cb);
3906 assert (!coro->invoke_av);
3907 coro->invoke_cb = SvREFCNT_inc (cb);
3908 coro->invoke_av = av;
2720 } 3909 }
3910
3911 api_ready (aTHX_ (SV *)hv);
3912
3913 if (GIMME_V != G_VOID)
3914 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3915 else
3916 SvREFCNT_dec (hv);
2721} 3917}
3918
3919SV *
3920rouse_cb ()
3921 PROTOTYPE:
3922 CODE:
3923 RETVAL = coro_new_rouse_cb (aTHX);
3924 OUTPUT:
3925 RETVAL
2722 3926
2723void 3927void
2724_pool_2 (SV *cb) 3928rouse_wait (...)
3929 PROTOTYPE: ;$
3930 PPCODE:
3931 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3932
3933void
3934on_enter (SV *block)
3935 ALIAS:
3936 on_leave = 1
3937 PROTOTYPE: &
2725 CODE: 3938 CODE:
2726{ 3939{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 3940 struct coro *coro = SvSTATE_current;
3941 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 3942
2730 sv_setsv (cb, &PL_sv_undef); 3943 block = s_get_cv_croak (block);
2731 3944
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3945 if (!*avp)
2733 coro->saved_deffh = 0; 3946 *avp = newAV ();
2734 3947
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3948 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 3949
2744 av_clear (GvAV (PL_defgv)); 3950 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 3951 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 3952
2748 coro->prio = 0; 3953 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 3954 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3955 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 3956}
2755 3957
2756 3958
2757MODULE = Coro::State PACKAGE = PerlIO::cede 3959MODULE = Coro::State PACKAGE = PerlIO::cede
2758 3960
… …
2761 3963
2762 3964
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 3965MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 3966
2765SV * 3967SV *
2766new (SV *klass, SV *count_ = 0) 3968new (SV *klass, SV *count = 0)
2767 CODE: 3969 CODE:
2768{ 3970{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3971 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 3972
2773 /* unfortunately, building manually saves memory */ 3973 if (count)
2774 Newx (ary, 2, SV *); 3974 {
2775 AvALLOC (av) = ary; 3975 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 3976
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3977 if (SvOK (count))
3978 semcnt = SvIV (count);
3979 }
3980
3981 RETVAL = sv_bless (
3982 coro_waitarray_new (aTHX_ semcnt),
3983 GvSTASH (CvGV (cv))
3984 );
2782} 3985}
3986 OUTPUT:
3987 RETVAL
3988
3989# helper for Coro::Channel and others
3990SV *
3991_alloc (int count)
3992 CODE:
3993 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 3994 OUTPUT:
2784 RETVAL 3995 RETVAL
2785 3996
2786SV * 3997SV *
2787count (SV *self) 3998count (SV *self)
… …
2796 adjust = 1 4007 adjust = 1
2797 CODE: 4008 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4009 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 4010
2800void 4011void
2801down (SV *self) 4012down (...)
2802 CODE: 4013 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4014 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4015
4016void
4017wait (...)
4018 CODE:
4019 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 4020
2805void 4021void
2806try (SV *self) 4022try (SV *self)
2807 PPCODE: 4023 PPCODE:
2808{ 4024{
… …
2820 XSRETURN_NO; 4036 XSRETURN_NO;
2821} 4037}
2822 4038
2823void 4039void
2824waiters (SV *self) 4040waiters (SV *self)
2825 CODE: 4041 PPCODE:
2826{ 4042{
2827 AV *av = (AV *)SvRV (self); 4043 AV *av = (AV *)SvRV (self);
4044 int wcount = AvFILLp (av) + 1 - 1;
2828 4045
2829 if (GIMME_V == G_SCALAR) 4046 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4047 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 4048 else
2832 { 4049 {
2833 int i; 4050 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 4051 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 4052 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4053 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 4054 }
2838} 4055}
4056
4057MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4058
4059void
4060_may_delete (SV *sem, int count, int extra_refs)
4061 PPCODE:
4062{
4063 AV *av = (AV *)SvRV (sem);
4064
4065 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4066 && AvFILLp (av) == 0 /* no waiters, just count */
4067 && SvIV (AvARRAY (av)[0]) == count)
4068 XSRETURN_YES;
4069
4070 XSRETURN_NO;
4071}
4072
4073MODULE = Coro::State PACKAGE = Coro::Signal
4074
4075SV *
4076new (SV *klass)
4077 CODE:
4078 RETVAL = sv_bless (
4079 coro_waitarray_new (aTHX_ 0),
4080 GvSTASH (CvGV (cv))
4081 );
4082 OUTPUT:
4083 RETVAL
4084
4085void
4086wait (...)
4087 CODE:
4088 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4089
4090void
4091broadcast (SV *self)
4092 CODE:
4093{
4094 AV *av = (AV *)SvRV (self);
4095 coro_signal_wake (aTHX_ av, AvFILLp (av));
4096}
4097
4098void
4099send (SV *self)
4100 CODE:
4101{
4102 AV *av = (AV *)SvRV (self);
4103
4104 if (AvFILLp (av))
4105 coro_signal_wake (aTHX_ av, 1);
4106 else
4107 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4108}
4109
4110IV
4111awaited (SV *self)
4112 CODE:
4113 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4114 OUTPUT:
4115 RETVAL
2839 4116
2840 4117
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 4118MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 4119
2843BOOT: 4120BOOT:
… …
2871 4148
2872void 4149void
2873_register (char *target, char *proto, SV *req) 4150_register (char *target, char *proto, SV *req)
2874 CODE: 4151 CODE:
2875{ 4152{
2876 HV *st; 4153 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 4154 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4155 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 4156 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4157 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 4158}
2884 4159
4160MODULE = Coro::State PACKAGE = Coro::Select
4161
4162void
4163patch_pp_sselect ()
4164 CODE:
4165 if (!coro_old_pp_sselect)
4166 {
4167 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4168 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4169 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4170 }
4171
4172void
4173unpatch_pp_sselect ()
4174 CODE:
4175 if (coro_old_pp_sselect)
4176 {
4177 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4178 coro_old_pp_sselect = 0;
4179 }
4180

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