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Comparing Coro/Coro/State.xs (file contents):
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC vs.
Revision 1.403 by root, Sun May 22 20:13:33 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
18#include <stddef.h>
13#include <stdio.h> 19#include <stdio.h>
14#include <errno.h> 20#include <errno.h>
15#include <assert.h> 21#include <assert.h>
16 22
17#ifdef WIN32 23#ifndef SVs_PADSTALE
24# define SVs_PADSTALE 0
25#endif
26
27#if defined(_WIN32)
28# undef HAS_GETTIMEOFDAY
18# undef setjmp 29# undef setjmp
19# undef longjmp 30# undef longjmp
20# undef _exit 31# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 32# define setjmp _setjmp /* deep magic */
22#else 33#else
23# include <inttypes.h> /* most portable stdint.h */ 34# include <inttypes.h> /* most portable stdint.h */
24#endif 35#endif
25 36
26#ifdef HAVE_MMAP 37#ifdef HAVE_MMAP
… …
51#endif 62#endif
52 63
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
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 67#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 68# undef CORO_STACKGUARD
111#endif 69#endif
112 70
113#ifndef CORO_STACKGUARD 71#ifndef CORO_STACKGUARD
… …
120#endif 78#endif
121 79
122/* The next macros try to return the current stack pointer, in an as 80/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 81 * portable way as possible. */
124#if __GNUC__ >= 4 82#if __GNUC__ >= 4
83# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 84# define STACKLEVEL __builtin_frame_address (0)
126#else 85#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 86# define dSTACKLEVEL volatile void *stacklevel
87# define STACKLEVEL ((void *)&stacklevel)
128#endif 88#endif
129 89
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 90#define IN_DESTRUCT PL_dirty
131 91
132#if __GNUC__ >= 3 92#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x) 93# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value)) 94# define expect(expr,value) __builtin_expect ((expr), (value))
135# define INLINE static inline 95# define INLINE static inline
136#else 96#else
137# define attribute(x) 97# define attribute(x)
138# define expect(expr,value) (expr) 98# define expect(expr,value) (expr)
139# define INLINE static 99# define INLINE static
… …
143#define expect_true(expr) expect ((expr) != 0, 1) 103#define expect_true(expr) expect ((expr) != 0, 1)
144 104
145#define NOINLINE attribute ((noinline)) 105#define NOINLINE attribute ((noinline))
146 106
147#include "CoroAPI.h" 107#include "CoroAPI.h"
108#define GCoroAPI (&coroapi) /* very sneaky */
148 109
149#ifdef USE_ITHREADS 110#ifdef USE_ITHREADS
150# if CORO_PTHREAD 111# if CORO_PTHREAD
151static void *coro_thx; 112static void *coro_thx;
152# endif 113# endif
153#endif 114#endif
154 115
116#ifdef __linux
117# include <time.h> /* for timespec */
118# include <syscall.h> /* for SYS_* */
119# ifdef SYS_clock_gettime
120# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
121# define CORO_CLOCK_MONOTONIC 1
122# define CORO_CLOCK_THREAD_CPUTIME_ID 3
123# endif
124#endif
125
155static double (*nvtime)(); /* so why doesn't it take void? */ 126static double (*nvtime)(); /* so why doesn't it take void? */
127static void (*u2time)(pTHX_ UV ret[2]);
128
129/* we hijack an hopefully unused CV flag for our purposes */
130#define CVf_SLF 0x4000
131static OP *pp_slf (pTHX);
132static void slf_destroy (pTHX_ struct coro *coro);
156 133
157static U32 cctx_gen; 134static U32 cctx_gen;
158static size_t cctx_stacksize = CORO_STACKSIZE; 135static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 136static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 137static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 138static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 139static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 140static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 141
142static AV *av_destroy; /* destruction queue */
143static SV *sv_manager; /* the manager coro */
144static SV *sv_idle; /* $Coro::idle */
145
165static GV *irsgv; /* $/ */ 146static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 147static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 148static SV *rv_diehook;
168static SV *rv_warnhook; 149static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 150static HV *hv_sig; /* %SIG */
170 151
171/* async_pool helper stuff */ 152/* async_pool helper stuff */
172static SV *sv_pool_rss; 153static SV *sv_pool_rss;
173static SV *sv_pool_size; 154static SV *sv_pool_size;
155static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 156static AV *av_async_pool; /* idle pool */
157static SV *sv_Coro; /* class string */
158static CV *cv_pool_handler;
175 159
176/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
177static SV *sv_activity; 161static SV *sv_activity;
178 162
163/* enable processtime/realtime profiling */
164static char enable_times;
165typedef U32 coro_ts[2];
166static coro_ts time_real, time_cpu;
167static char times_valid;
168
179static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
181 171
182enum { 172enum
173{
183 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
208 int valgrind_id; 199 int valgrind_id;
209#endif 200#endif
210 unsigned char flags; 201 unsigned char flags;
211} coro_cctx; 202} coro_cctx;
212 203
204static coro_cctx *cctx_current; /* the currently running cctx */
205
206/*****************************************************************************/
207
208static MGVTBL coro_state_vtbl;
209
213enum { 210enum
211{
214 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
215 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
216 CF_NEW = 0x0004, /* has never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 215 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
216 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
217 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
218}; 218};
219 219
220/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
221typedef struct 221typedef struct
222{ 222{
223 SV *defsv; 223 SV *defsv;
224 AV *defav; 224 AV *defav;
225 SV *errsv; 225 SV *errsv;
226 SV *irsgv; 226 SV *irsgv;
227 HV *hinthv;
227#define VAR(name,type) type name; 228#define VAR(name,type) type name;
228# include "state.h" 229# include "state.h"
229#undef VAR 230#undef VAR
230} perl_slots; 231} perl_slots;
231 232
233// how many context stack entries do we need for perl_slots
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 234#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
233 235
234/* this is a structure representing a perl-level coroutine */ 236/* this is a structure representing a perl-level coroutine */
235struct coro { 237struct coro
238{
236 /* the C coroutine allocated to this perl coroutine, if any */ 239 /* the C coroutine allocated to this perl coroutine, if any */
237 coro_cctx *cctx; 240 coro_cctx *cctx;
241
242 /* ready queue */
243 struct coro *next_ready;
238 244
239 /* state data */ 245 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */ 246 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 247 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
243 249
250 CV *startcv; /* the CV to execute */
244 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
249 254
250 /* statistics */ 255 /* statistics */
251 int usecount; /* number of transfers to this coro */ 256 int usecount; /* number of transfers to this coro */
252 257
253 /* coro process data */ 258 /* coro process data */
254 int prio; 259 int prio;
255 SV *throw; /* exception to be thrown */ 260 SV *except; /* exception to be thrown */
261 SV *rouse_cb; /* last rouse callback */
262 AV *on_destroy; /* callbacks or coros to notify on destroy */
263 AV *status; /* the exit status list */
256 264
257 /* async_pool */ 265 /* async_pool */
258 SV *saved_deffh; 266 SV *saved_deffh;
267 SV *invoke_cb;
268 AV *invoke_av;
269
270 /* on_enter/on_leave */
271 AV *on_enter;
272 AV *on_leave;
273
274 /* swap_sv */
275 AV *swap_sv;
276
277 /* times */
278 coro_ts t_cpu, t_real;
259 279
260 /* linked list */ 280 /* linked list */
261 struct coro *next, *prev; 281 struct coro *next, *prev;
262}; 282};
263 283
264typedef struct coro *Coro__State; 284typedef struct coro *Coro__State;
265typedef struct coro *Coro__State_or_hashref; 285typedef struct coro *Coro__State_or_hashref;
266 286
267/* the following variables are effectively part of the perl context */ 287/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */ 288/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */ 289/* the main reason we don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */ 290static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
272 291
273/** Coro ********************************************************************/ 292/** Coro ********************************************************************/
274 293
275#define PRIO_MAX 3 294#define CORO_PRIO_MAX 3
276#define PRIO_HIGH 1 295#define CORO_PRIO_HIGH 1
277#define PRIO_NORMAL 0 296#define CORO_PRIO_NORMAL 0
278#define PRIO_LOW -1 297#define CORO_PRIO_LOW -1
279#define PRIO_IDLE -3 298#define CORO_PRIO_IDLE -3
280#define PRIO_MIN -4 299#define CORO_PRIO_MIN -4
281 300
282/* for Coro.pm */ 301/* for Coro.pm */
283static SV *coro_current; 302static SV *coro_current;
284static SV *coro_readyhook; 303static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 304static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
305static CV *cv_coro_run;
286static struct coro *coro_first; 306static struct coro *coro_first;
287#define coro_nready coroapi.nready 307#define coro_nready coroapi.nready
308
309/** Coro::Select ************************************************************/
310
311static OP *(*coro_old_pp_sselect) (pTHX);
312static SV *coro_select_select;
313
314/* horrible hack, but if it works... */
315static OP *
316coro_pp_sselect (pTHX)
317{
318 dSP;
319 PUSHMARK (SP - 4); /* fake argument list */
320 XPUSHs (coro_select_select);
321 PUTBACK;
322
323 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
324 PL_op->op_flags |= OPf_STACKED;
325 PL_op->op_private = 0;
326 return PL_ppaddr [OP_ENTERSUB](aTHX);
327}
328
329/** time stuff **************************************************************/
330
331#ifdef HAS_GETTIMEOFDAY
332
333static void
334coro_u2time (pTHX_ UV ret[2])
335{
336 struct timeval tv;
337 gettimeofday (&tv, 0);
338
339 ret [0] = tv.tv_sec;
340 ret [1] = tv.tv_usec;
341}
342
343static double
344coro_nvtime ()
345{
346 struct timeval tv;
347 gettimeofday (&tv, 0);
348
349 return tv.tv_sec + tv.tv_usec * 1e-6;
350}
351
352static void
353time_init (pTHX)
354{
355 nvtime = coro_nvtime;
356 u2time = coro_u2time;
357}
358
359#else
360
361static void
362time_init (pTHX)
363{
364 SV **svp;
365
366 require_pv ("Time/HiRes.pm");
367
368 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
369
370 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
371 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
372
373 nvtime = INT2PTR (double (*)(), SvIV (*svp));
374
375 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
376 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
377}
378
379#endif
288 380
289/** lowlevel stuff **********************************************************/ 381/** lowlevel stuff **********************************************************/
290 382
291static SV * 383static SV *
292coro_get_sv (pTHX_ const char *name, int create) 384coro_get_sv (pTHX_ const char *name, int create)
… …
316 get_hv (name, create); 408 get_hv (name, create);
317#endif 409#endif
318 return get_hv (name, create); 410 return get_hv (name, create);
319} 411}
320 412
413INLINE void
414coro_times_update ()
415{
416#ifdef coro_clock_gettime
417 struct timespec ts;
418
419 ts.tv_sec = ts.tv_nsec = 0;
420 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
421 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
422
423 ts.tv_sec = ts.tv_nsec = 0;
424 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
425 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
426#else
427 dTHX;
428 UV tv[2];
429
430 u2time (aTHX_ tv);
431 time_real [0] = tv [0];
432 time_real [1] = tv [1] * 1000;
433#endif
434}
435
436INLINE void
437coro_times_add (struct coro *c)
438{
439 c->t_real [1] += time_real [1];
440 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
441 c->t_real [0] += time_real [0];
442
443 c->t_cpu [1] += time_cpu [1];
444 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
445 c->t_cpu [0] += time_cpu [0];
446}
447
448INLINE void
449coro_times_sub (struct coro *c)
450{
451 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
452 c->t_real [1] -= time_real [1];
453 c->t_real [0] -= time_real [0];
454
455 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
456 c->t_cpu [1] -= time_cpu [1];
457 c->t_cpu [0] -= time_cpu [0];
458}
459
460/*****************************************************************************/
461/* magic glue */
462
463#define CORO_MAGIC_type_cv 26
464#define CORO_MAGIC_type_state PERL_MAGIC_ext
465
466#define CORO_MAGIC_NN(sv, type) \
467 (expect_true (SvMAGIC (sv)->mg_type == type) \
468 ? SvMAGIC (sv) \
469 : mg_find (sv, type))
470
471#define CORO_MAGIC(sv, type) \
472 (expect_true (SvMAGIC (sv)) \
473 ? CORO_MAGIC_NN (sv, type) \
474 : 0)
475
476#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
477#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
478
479INLINE MAGIC *
480SvSTATEhv_p (pTHX_ SV *coro)
481{
482 MAGIC *mg;
483
484 if (expect_true (
485 SvTYPE (coro) == SVt_PVHV
486 && (mg = CORO_MAGIC_state (coro))
487 && mg->mg_virtual == &coro_state_vtbl
488 ))
489 return mg;
490
491 return 0;
492}
493
494INLINE struct coro *
495SvSTATE_ (pTHX_ SV *coro)
496{
497 MAGIC *mg;
498
499 if (SvROK (coro))
500 coro = SvRV (coro);
501
502 mg = SvSTATEhv_p (aTHX_ coro);
503 if (!mg)
504 croak ("Coro::State object required");
505
506 return (struct coro *)mg->mg_ptr;
507}
508
509#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
510
511/* faster than SvSTATE, but expects a coroutine hv */
512#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
513#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
514
515/*****************************************************************************/
516/* padlist management and caching */
517
321static AV * 518static AV *
322coro_clone_padlist (pTHX_ CV *cv) 519coro_derive_padlist (pTHX_ CV *cv)
323{ 520{
324 AV *padlist = CvPADLIST (cv); 521 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 522 AV *newpadlist, *newpad;
326 523
327 newpadlist = newAV (); 524 newpadlist = newAV ();
… …
332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 529 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
333#endif 530#endif
334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 531 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
335 --AvFILLp (padlist); 532 --AvFILLp (padlist);
336 533
337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 534 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
338 av_store (newpadlist, 1, (SV *)newpad); 535 av_store (newpadlist, 1, (SV *)newpad);
339 536
340 return newpadlist; 537 return newpadlist;
341} 538}
342 539
343static void 540static void
344free_padlist (pTHX_ AV *padlist) 541free_padlist (pTHX_ AV *padlist)
345{ 542{
346 /* may be during global destruction */ 543 /* may be during global destruction */
347 if (SvREFCNT (padlist)) 544 if (!IN_DESTRUCT)
348 { 545 {
349 I32 i = AvFILLp (padlist); 546 I32 i = AvFILLp (padlist);
350 while (i >= 0) 547
548 while (i > 0) /* special-case index 0 */
351 { 549 {
352 SV **svp = av_fetch (padlist, i--, FALSE); 550 /* we try to be extra-careful here */
353 if (svp) 551 AV *av = (AV *)AvARRAY (padlist)[i--];
354 { 552 I32 j = AvFILLp (av);
355 SV *sv; 553
356 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 554 while (j >= 0)
555 SvREFCNT_dec (AvARRAY (av)[j--]);
556
557 AvFILLp (av) = -1;
357 SvREFCNT_dec (sv); 558 SvREFCNT_dec (av);
358
359 SvREFCNT_dec (*svp);
360 }
361 } 559 }
362 560
561 SvREFCNT_dec (AvARRAY (padlist)[0]);
562
563 AvFILLp (padlist) = -1;
363 SvREFCNT_dec ((SV*)padlist); 564 SvREFCNT_dec ((SV*)padlist);
364 } 565 }
365} 566}
366 567
367static int 568static int
368coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 569coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
369{ 570{
370 AV *padlist; 571 AV *padlist;
371 AV *av = (AV *)mg->mg_obj; 572 AV *av = (AV *)mg->mg_obj;
573
574 /* perl manages to free our internal AV and _then_ call us */
575 if (IN_DESTRUCT)
576 return 0;
372 577
373 /* casting is fun. */ 578 /* casting is fun. */
374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 579 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
375 free_padlist (aTHX_ padlist); 580 free_padlist (aTHX_ padlist);
376 581
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 582 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 583
379 return 0; 584 return 0;
380} 585}
381
382#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 586
385static MGVTBL coro_cv_vtbl = { 587static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 588 0, 0, 0, 0,
387 coro_cv_free 589 coro_cv_free
388}; 590};
389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
395#define CORO_MAGIC(sv, type) \
396 (expect_true (SvMAGIC (sv)) \
397 ? CORO_MAGIC_NN (sv, type) \
398 : 0)
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
432 591
433/* the next two functions merely cache the padlists */ 592/* the next two functions merely cache the padlists */
434static void 593static void
435get_padlist (pTHX_ CV *cv) 594get_padlist (pTHX_ CV *cv)
436{ 595{
… …
442 else 601 else
443 { 602 {
444#if CORO_PREFER_PERL_FUNCTIONS 603#if CORO_PREFER_PERL_FUNCTIONS
445 /* this is probably cleaner? but also slower! */ 604 /* this is probably cleaner? but also slower! */
446 /* in practise, it seems to be less stable */ 605 /* in practise, it seems to be less stable */
447 CV *cp = Perl_cv_clone (cv); 606 CV *cp = Perl_cv_clone (aTHX_ cv);
448 CvPADLIST (cv) = CvPADLIST (cp); 607 CvPADLIST (cv) = CvPADLIST (cp);
449 CvPADLIST (cp) = 0; 608 CvPADLIST (cp) = 0;
450 SvREFCNT_dec (cp); 609 SvREFCNT_dec (cp);
451#else 610#else
452 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 611 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
453#endif 612#endif
454 } 613 }
455} 614}
456 615
457static void 616static void
… …
464 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 623 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
465 624
466 av = (AV *)mg->mg_obj; 625 av = (AV *)mg->mg_obj;
467 626
468 if (expect_false (AvFILLp (av) >= AvMAX (av))) 627 if (expect_false (AvFILLp (av) >= AvMAX (av)))
469 av_extend (av, AvMAX (av) + 1); 628 av_extend (av, AvFILLp (av) + 1);
470 629
471 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 630 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
472} 631}
473 632
474/** load & save, init *******************************************************/ 633/** load & save, init *******************************************************/
634
635/* swap sv heads, at least logically */
636static void
637swap_svs (pTHX_ Coro__State c)
638{
639 int i;
640
641 for (i = 0; i <= AvFILLp (c->swap_sv); )
642 {
643 SV *a = AvARRAY (c->swap_sv)[i++];
644 SV *b = AvARRAY (c->swap_sv)[i++];
645
646 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
647 SV tmp;
648
649 /* swap sv_any */
650 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
651
652 /* swap sv_flags */
653 SvFLAGS (&tmp) = SvFLAGS (a);
654 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
655 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
656
657#if PERL_VERSION_ATLEAST (5,10,0)
658 /* perl 5.10 complicates this _quite_ a bit, but it also is
659 * much faster, so no quarrels here. alternatively, we could
660 * sv_upgrade to avoid this.
661 */
662 {
663 /* swap sv_u */
664 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
665
666 /* if SvANY points to the head, we need to adjust the pointers,
667 * as the pointer for a still points to b, and maybe vice versa.
668 */
669 #define svany_in_head(type) \
670 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
671
672 if (svany_in_head (SvTYPE (a)))
673 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
674
675 if (svany_in_head (SvTYPE (b)))
676 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
677 }
678#endif
679 }
680}
681
682#define SWAP_SVS(coro) \
683 if (expect_false ((coro)->swap_sv)) \
684 swap_svs (aTHX_ (coro))
685
686static void
687on_enterleave_call (pTHX_ SV *cb);
475 688
476static void 689static void
477load_perl (pTHX_ Coro__State c) 690load_perl (pTHX_ Coro__State c)
478{ 691{
479 perl_slots *slot = c->slot; 692 perl_slots *slot = c->slot;
480 c->slot = 0; 693 c->slot = 0;
481 694
482 PL_mainstack = c->mainstack; 695 PL_mainstack = c->mainstack;
483 696
484 GvSV (PL_defgv) = slot->defsv; 697 GvSV (PL_defgv) = slot->defsv;
485 GvAV (PL_defgv) = slot->defav; 698 GvAV (PL_defgv) = slot->defav;
486 GvSV (PL_errgv) = slot->errsv; 699 GvSV (PL_errgv) = slot->errsv;
487 GvSV (irsgv) = slot->irsgv; 700 GvSV (irsgv) = slot->irsgv;
701 GvHV (PL_hintgv) = slot->hinthv;
488 702
489 #define VAR(name,type) PL_ ## name = slot->name; 703 #define VAR(name,type) PL_ ## name = slot->name;
490 # include "state.h" 704 # include "state.h"
491 #undef VAR 705 #undef VAR
492 706
… …
505 719
506 PUTBACK; 720 PUTBACK;
507 } 721 }
508 722
509 slf_frame = c->slf_frame; 723 slf_frame = c->slf_frame;
510 coro_throw = c->throw; 724 CORO_THROW = c->except;
725
726 if (expect_false (enable_times))
727 {
728 if (expect_false (!times_valid))
729 coro_times_update ();
730
731 coro_times_sub (c);
732 }
733
734 if (expect_false (c->on_enter))
735 {
736 int i;
737
738 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
739 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
740 }
741
742 SWAP_SVS (c);
511} 743}
512 744
513static void 745static void
514save_perl (pTHX_ Coro__State c) 746save_perl (pTHX_ Coro__State c)
515{ 747{
516 c->throw = coro_throw; 748 SWAP_SVS (c);
749
750 if (expect_false (c->on_leave))
751 {
752 int i;
753
754 for (i = AvFILLp (c->on_leave); i >= 0; --i)
755 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
756 }
757
758 times_valid = 0;
759
760 if (expect_false (enable_times))
761 {
762 coro_times_update (); times_valid = 1;
763 coro_times_add (c);
764 }
765
766 c->except = CORO_THROW;
517 c->slf_frame = slf_frame; 767 c->slf_frame = slf_frame;
518 768
519 { 769 {
520 dSP; 770 dSP;
521 I32 cxix = cxstack_ix; 771 I32 cxix = cxstack_ix;
… …
533 { 783 {
534 while (expect_true (cxix >= 0)) 784 while (expect_true (cxix >= 0))
535 { 785 {
536 PERL_CONTEXT *cx = &ccstk[cxix--]; 786 PERL_CONTEXT *cx = &ccstk[cxix--];
537 787
538 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 788 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
539 { 789 {
540 CV *cv = cx->blk_sub.cv; 790 CV *cv = cx->blk_sub.cv;
541 791
542 if (expect_true (CvDEPTH (cv))) 792 if (expect_true (CvDEPTH (cv)))
543 { 793 {
… …
562 812
563 PUTBACK; 813 PUTBACK;
564 } 814 }
565 815
566 /* allocate some space on the context stack for our purposes */ 816 /* allocate some space on the context stack for our purposes */
567 /* we manually unroll here, as usually 2 slots is enough */ 817 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
568 if (SLOT_COUNT >= 1) CXINC;
569 if (SLOT_COUNT >= 2) CXINC;
570 if (SLOT_COUNT >= 3) CXINC;
571 { 818 {
572 int i; 819 unsigned int i;
820
573 for (i = 3; i < SLOT_COUNT; ++i) 821 for (i = 0; i < SLOT_COUNT; ++i)
574 CXINC; 822 CXINC;
575 } 823
576 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 824 cxstack_ix -= SLOT_COUNT; /* undo allocation */
825 }
577 826
578 c->mainstack = PL_mainstack; 827 c->mainstack = PL_mainstack;
579 828
580 { 829 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 830 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 831
583 slot->defav = GvAV (PL_defgv); 832 slot->defav = GvAV (PL_defgv);
584 slot->defsv = DEFSV; 833 slot->defsv = DEFSV;
585 slot->errsv = ERRSV; 834 slot->errsv = ERRSV;
586 slot->irsgv = GvSV (irsgv); 835 slot->irsgv = GvSV (irsgv);
836 slot->hinthv = GvHV (PL_hintgv);
587 837
588 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VAR(name,type) slot->name = PL_ ## name;
589 # include "state.h" 839 # include "state.h"
590 #undef VAR 840 #undef VAR
591 } 841 }
… …
596 * of perl.c:init_stacks, except that it uses less memory 846 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 847 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 848 * not usually need a lot of stackspace.
599 */ 849 */
600#if CORO_PREFER_PERL_FUNCTIONS 850#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 851# define coro_init_stacks(thx) init_stacks ()
602#else 852#else
603static void 853static void
604coro_init_stacks (pTHX) 854coro_init_stacks (pTHX)
605{ 855{
606 PL_curstackinfo = new_stackinfo(32, 8); 856 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
607 PL_curstackinfo->si_type = PERLSI_MAIN; 857 PL_curstackinfo->si_type = PERLSI_MAIN;
608 PL_curstack = PL_curstackinfo->si_stack; 858 PL_curstack = PL_curstackinfo->si_stack;
609 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 859 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
610 860
611 PL_stack_base = AvARRAY(PL_curstack); 861 PL_stack_base = AvARRAY(PL_curstack);
… …
669#if !PERL_VERSION_ATLEAST (5,10,0) 919#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 920 Safefree (PL_retstack);
671#endif 921#endif
672} 922}
673 923
924#define CORO_RSS \
925 rss += sizeof (SYM (curstackinfo)); \
926 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
927 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
928 rss += SYM (tmps_max) * sizeof (SV *); \
929 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
930 rss += SYM (scopestack_max) * sizeof (I32); \
931 rss += SYM (savestack_max) * sizeof (ANY);
932
674static size_t 933static size_t
675coro_rss (pTHX_ struct coro *coro) 934coro_rss (pTHX_ struct coro *coro)
676{ 935{
677 size_t rss = sizeof (*coro); 936 size_t rss = sizeof (*coro);
678 937
679 if (coro->mainstack) 938 if (coro->mainstack)
680 { 939 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 940 if (coro->flags & CF_RUNNING)
685 { 941 {
686 slot = &tmp_slot; 942 #define SYM(sym) PL_ ## sym
687 943 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 944 #undef SYM
691 } 945 }
692 else 946 else
693 slot = coro->slot;
694
695 if (slot)
696 { 947 {
697 rss += sizeof (slot->curstackinfo); 948 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 949 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 950 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 951 }
709 } 952 }
710 953
711 return rss; 954 return rss;
712} 955}
… …
725#endif 968#endif
726 969
727/* 970/*
728 * This overrides the default magic get method of %SIG elements. 971 * This overrides the default magic get method of %SIG elements.
729 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 972 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
730 * and instead of tryign to save and restore the hash elements, we just provide 973 * and instead of trying to save and restore the hash elements (extremely slow),
731 * readback here. 974 * we just provide our own readback here.
732 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
733 * not expecting this to actually change the hook. This is a potential problem
734 * when a schedule happens then, but we ignore this.
735 */ 975 */
736static int 976static int
737coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 977coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
738{ 978{
739 const char *s = MgPV_nolen_const (mg); 979 const char *s = MgPV_nolen_const (mg);
… …
792 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1032 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
793 1033
794 if (svp) 1034 if (svp)
795 { 1035 {
796 SV *old = *svp; 1036 SV *old = *svp;
797 *svp = newSVsv (sv); 1037 *svp = SvOK (sv) ? newSVsv (sv) : 0;
798 SvREFCNT_dec (old); 1038 SvREFCNT_dec (old);
799 return 0; 1039 return 0;
800 } 1040 }
801 } 1041 }
802 1042
… …
814slf_check_nop (pTHX_ struct CoroSLF *frame) 1054slf_check_nop (pTHX_ struct CoroSLF *frame)
815{ 1055{
816 return 0; 1056 return 0;
817} 1057}
818 1058
1059static int
1060slf_check_repeat (pTHX_ struct CoroSLF *frame)
1061{
1062 return 1;
1063}
1064
1065static UNOP init_perl_op;
1066
819static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1067static void NOINLINE /* noinline to keep it out of the transfer fast path */
820coro_setup (pTHX_ struct coro *coro) 1068init_perl (pTHX_ struct coro *coro)
821{ 1069{
822 /* 1070 /*
823 * emulate part of the perl startup here. 1071 * emulate part of the perl startup here.
824 */ 1072 */
825 coro_init_stacks (aTHX); 1073 coro_init_stacks (aTHX);
826 1074
827 PL_runops = RUNOPS_DEFAULT; 1075 PL_runops = RUNOPS_DEFAULT;
828 PL_curcop = &PL_compiling; 1076 PL_curcop = &PL_compiling;
829 PL_in_eval = EVAL_NULL; 1077 PL_in_eval = EVAL_NULL;
830 PL_comppad = 0; 1078 PL_comppad = 0;
1079 PL_comppad_name = 0;
1080 PL_comppad_name_fill = 0;
1081 PL_comppad_name_floor = 0;
831 PL_curpm = 0; 1082 PL_curpm = 0;
832 PL_curpad = 0; 1083 PL_curpad = 0;
833 PL_localizing = 0; 1084 PL_localizing = 0;
834 PL_dirty = 0;
835 PL_restartop = 0; 1085 PL_restartop = 0;
836#if PERL_VERSION_ATLEAST (5,10,0) 1086#if PERL_VERSION_ATLEAST (5,10,0)
837 PL_parser = 0; 1087 PL_parser = 0;
838#endif 1088#endif
1089 PL_hints = 0;
839 1090
840 /* recreate the die/warn hooks */ 1091 /* recreate the die/warn hooks */
841 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1092 PL_diehook = SvREFCNT_inc (rv_diehook);
842 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1093 PL_warnhook = SvREFCNT_inc (rv_warnhook);
843 1094
844 GvSV (PL_defgv) = newSV (0); 1095 GvSV (PL_defgv) = newSV (0);
845 GvAV (PL_defgv) = coro->args; coro->args = 0; 1096 GvAV (PL_defgv) = coro->args; coro->args = 0;
846 GvSV (PL_errgv) = newSV (0); 1097 GvSV (PL_errgv) = newSV (0);
847 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1098 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1099 GvHV (PL_hintgv) = 0;
848 PL_rs = newSVsv (GvSV (irsgv)); 1100 PL_rs = newSVsv (GvSV (irsgv));
849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1101 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
850 1102
851 { 1103 {
852 dSP; 1104 dSP;
853 UNOP myop; 1105 UNOP myop;
854 1106
855 Zero (&myop, 1, UNOP); 1107 Zero (&myop, 1, UNOP);
856 myop.op_next = Nullop; 1108 myop.op_next = Nullop;
1109 myop.op_type = OP_ENTERSUB;
857 myop.op_flags = OPf_WANT_VOID; 1110 myop.op_flags = OPf_WANT_VOID;
858 1111
859 PUSHMARK (SP); 1112 PUSHMARK (SP);
860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1113 PUSHs ((SV *)coro->startcv);
861 PUTBACK; 1114 PUTBACK;
862 PL_op = (OP *)&myop; 1115 PL_op = (OP *)&myop;
863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1116 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
864 SPAGAIN;
865 } 1117 }
866 1118
867 /* this newly created coroutine might be run on an existing cctx which most 1119 /* this newly created coroutine might be run on an existing cctx which most
868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1120 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
869 */ 1121 */
870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1122 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1123 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1124 slf_frame.destroy = 0;
872 1125
873 coro_throw = coro->throw; 1126 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
874} 1127 init_perl_op.op_next = PL_op;
1128 init_perl_op.op_type = OP_ENTERSUB;
1129 init_perl_op.op_ppaddr = pp_slf;
1130 /* no flags etc. required, as an init function won't be called */
875 1131
1132 PL_op = (OP *)&init_perl_op;
1133
1134 /* copy throw, in case it was set before init_perl */
1135 CORO_THROW = coro->except;
1136
1137 SWAP_SVS (coro);
1138
1139 if (expect_false (enable_times))
1140 {
1141 coro_times_update ();
1142 coro_times_sub (coro);
1143 }
1144}
1145
876static void 1146static void
877coro_destruct (pTHX_ struct coro *coro) 1147coro_unwind_stacks (pTHX)
878{ 1148{
879 if (!IN_DESTRUCT) 1149 if (!IN_DESTRUCT)
880 { 1150 {
881 /* restore all saved variables and stuff */ 1151 /* restore all saved variables and stuff */
882 LEAVE_SCOPE (0); 1152 LEAVE_SCOPE (0);
… …
890 POPSTACK_TO (PL_mainstack); 1160 POPSTACK_TO (PL_mainstack);
891 1161
892 /* unwind main stack */ 1162 /* unwind main stack */
893 dounwind (-1); 1163 dounwind (-1);
894 } 1164 }
1165}
895 1166
896 SvREFCNT_dec (GvSV (PL_defgv)); 1167static void
897 SvREFCNT_dec (GvAV (PL_defgv)); 1168destroy_perl (pTHX_ struct coro *coro)
898 SvREFCNT_dec (GvSV (PL_errgv)); 1169{
899 SvREFCNT_dec (PL_defoutgv); 1170 SV *svf [9];
900 SvREFCNT_dec (PL_rs);
901 SvREFCNT_dec (GvSV (irsgv));
902 1171
903 SvREFCNT_dec (PL_diehook);
904 SvREFCNT_dec (PL_warnhook);
905 1172 {
1173 SV *old_current = SvRV (coro_current);
1174 struct coro *current = SvSTATE (old_current);
1175
1176 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1177
1178 save_perl (aTHX_ current);
1179
1180 /* this will cause transfer_check to croak on block*/
1181 SvRV_set (coro_current, (SV *)coro->hv);
1182
1183 load_perl (aTHX_ coro);
1184
1185 coro_unwind_stacks (aTHX);
1186
1187 /* restore swapped sv's */
1188 SWAP_SVS (coro);
1189
1190 coro_destruct_stacks (aTHX);
1191
1192 // now save some sv's to be free'd later
1193 svf [0] = GvSV (PL_defgv);
1194 svf [1] = (SV *)GvAV (PL_defgv);
1195 svf [2] = GvSV (PL_errgv);
1196 svf [3] = (SV *)PL_defoutgv;
1197 svf [4] = PL_rs;
1198 svf [5] = GvSV (irsgv);
1199 svf [6] = (SV *)GvHV (PL_hintgv);
1200 svf [7] = PL_diehook;
1201 svf [8] = PL_warnhook;
1202 assert (9 == sizeof (svf) / sizeof (*svf));
1203
1204 SvRV_set (coro_current, old_current);
1205
1206 load_perl (aTHX_ current);
1207 }
1208
1209 {
1210 unsigned int i;
1211
1212 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1213 SvREFCNT_dec (svf [i]);
1214
906 SvREFCNT_dec (coro->saved_deffh); 1215 SvREFCNT_dec (coro->saved_deffh);
907 SvREFCNT_dec (coro_throw); 1216 SvREFCNT_dec (coro->rouse_cb);
908 1217 SvREFCNT_dec (coro->invoke_cb);
909 coro_destruct_stacks (aTHX); 1218 SvREFCNT_dec (coro->invoke_av);
1219 }
910} 1220}
911 1221
912INLINE void 1222INLINE void
913free_coro_mortal (pTHX) 1223free_coro_mortal (pTHX)
914{ 1224{
915 if (expect_true (coro_mortal)) 1225 if (expect_true (coro_mortal))
916 { 1226 {
917 SvREFCNT_dec (coro_mortal); 1227 SvREFCNT_dec ((SV *)coro_mortal);
918 coro_mortal = 0; 1228 coro_mortal = 0;
919 } 1229 }
920} 1230}
921 1231
922static int 1232static int
923runops_trace (pTHX) 1233runops_trace (pTHX)
924{ 1234{
925 COP *oldcop = 0; 1235 COP *oldcop = 0;
926 int oldcxix = -2; 1236 int oldcxix = -2;
927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
928 coro_cctx *cctx = coro->cctx;
929 1237
930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1238 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
931 { 1239 {
932 PERL_ASYNC_CHECK (); 1240 PERL_ASYNC_CHECK ();
933 1241
934 if (cctx->flags & CC_TRACE_ALL) 1242 if (cctx_current->flags & CC_TRACE_ALL)
935 { 1243 {
936 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1244 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
937 { 1245 {
938 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1246 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
939 SV **bot, **top; 1247 SV **bot, **top;
940 AV *av = newAV (); /* return values */ 1248 AV *av = newAV (); /* return values */
941 SV **cb; 1249 SV **cb;
… …
978 1286
979 if (PL_curcop != &PL_compiling) 1287 if (PL_curcop != &PL_compiling)
980 { 1288 {
981 SV **cb; 1289 SV **cb;
982 1290
983 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1291 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
984 { 1292 {
985 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1293 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
986 1294
987 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1295 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
988 { 1296 {
989 runops_proc_t old_runops = PL_runops;
990 dSP; 1297 dSP;
991 GV *gv = CvGV (cx->blk_sub.cv); 1298 GV *gv = CvGV (cx->blk_sub.cv);
992 SV *fullname = sv_2mortal (newSV (0)); 1299 SV *fullname = sv_2mortal (newSV (0));
993 1300
994 if (isGV (gv)) 1301 if (isGV (gv))
… …
999 SAVETMPS; 1306 SAVETMPS;
1000 EXTEND (SP, 3); 1307 EXTEND (SP, 3);
1001 PUSHMARK (SP); 1308 PUSHMARK (SP);
1002 PUSHs (&PL_sv_yes); 1309 PUSHs (&PL_sv_yes);
1003 PUSHs (fullname); 1310 PUSHs (fullname);
1004 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1311 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1005 PUTBACK; 1312 PUTBACK;
1006 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1313 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1007 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1314 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1008 SPAGAIN; 1315 SPAGAIN;
1009 FREETMPS; 1316 FREETMPS;
… …
1012 } 1319 }
1013 1320
1014 oldcxix = cxstack_ix; 1321 oldcxix = cxstack_ix;
1015 } 1322 }
1016 1323
1017 if (cctx->flags & CC_TRACE_LINE) 1324 if (cctx_current->flags & CC_TRACE_LINE)
1018 { 1325 {
1019 dSP; 1326 dSP;
1020 1327
1021 PL_runops = RUNOPS_DEFAULT; 1328 PL_runops = RUNOPS_DEFAULT;
1022 ENTER; 1329 ENTER;
… …
1041 1348
1042 TAINT_NOT; 1349 TAINT_NOT;
1043 return 0; 1350 return 0;
1044} 1351}
1045 1352
1353static struct CoroSLF cctx_ssl_frame;
1354
1046static void 1355static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1356slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1048{ 1357{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0; 1358 ta->prev = 0;
1051} 1359}
1052 1360
1053/* inject a fake call to Coro::State::_cctx_init into the execution */ 1361static int
1054/* _cctx_init should be careful, as it could be called at almost any time */ 1362slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1055/* during execution of a perl program */ 1363{
1056/* also initialises PL_top_env */ 1364 *frame = cctx_ssl_frame;
1365
1366 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1367}
1368
1369/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1057static void NOINLINE 1370static void NOINLINE
1058cctx_prepare (pTHX_ coro_cctx *cctx) 1371cctx_prepare (pTHX)
1059{ 1372{
1060 dSP;
1061 UNOP myop;
1062
1063 PL_top_env = &PL_start_env; 1373 PL_top_env = &PL_start_env;
1064 1374
1065 if (cctx->flags & CC_TRACE) 1375 if (cctx_current->flags & CC_TRACE)
1066 PL_runops = runops_trace; 1376 PL_runops = runops_trace;
1067 1377
1068 Zero (&myop, 1, UNOP); 1378 /* we already must be executing an SLF op, there is no other valid way
1069 myop.op_next = PL_op; 1379 * that can lead to creation of a new cctx */
1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1380 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1381 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1071 1382
1072 PUSHMARK (SP); 1383 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1073 EXTEND (SP, 2); 1384 cctx_ssl_frame = slf_frame;
1074 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1385
1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1386 slf_frame.prepare = slf_prepare_set_stacklevel;
1076 PUTBACK; 1387 slf_frame.check = slf_check_set_stacklevel;
1077 PL_op = (OP *)&myop;
1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1079 SPAGAIN;
1080} 1388}
1081 1389
1082/* the tail of transfer: execute stuff we can only do after a transfer */ 1390/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void 1391INLINE void
1084transfer_tail (pTHX) 1392transfer_tail (pTHX)
… …
1103 /* normally we would need to skip the entersub here */ 1411 /* normally we would need to skip the entersub here */
1104 /* not doing so will re-execute it, which is exactly what we want */ 1412 /* not doing so will re-execute it, which is exactly what we want */
1105 /* PL_nop = PL_nop->op_next */ 1413 /* PL_nop = PL_nop->op_next */
1106 1414
1107 /* inject a fake subroutine call to cctx_init */ 1415 /* inject a fake subroutine call to cctx_init */
1108 cctx_prepare (aTHX_ (coro_cctx *)arg); 1416 cctx_prepare (aTHX);
1109 1417
1110 /* cctx_run is the alternative tail of transfer() */ 1418 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX); 1419 transfer_tail (aTHX);
1112 1420
1113 /* somebody or something will hit me for both perl_run and PL_restartop */ 1421 /* somebody or something will hit me for both perl_run and PL_restartop */
1114 PL_restartop = PL_op; 1422 PL_restartop = PL_op;
1115 perl_run (PL_curinterp); 1423 perl_run (PL_curinterp);
1424 /*
1425 * Unfortunately, there is no way to get at the return values of the
1426 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1427 * runtime errors here, as this is just a random interpreter, not a thread.
1428 */
1116 1429
1117 /* 1430 /*
1118 * If perl-run returns we assume exit() was being called or the coro 1431 * If perl-run returns we assume exit() was being called or the coro
1119 * fell off the end, which seems to be the only valid (non-bug) 1432 * fell off the end, which seems to be the only valid (non-bug)
1120 * reason for perl_run to return. We try to exit by jumping to the 1433 * reason for perl_run to return. We try to exit by jumping to the
1121 * bootstrap-time "top" top_env, as we cannot restore the "main" 1434 * bootstrap-time "top" top_env, as we cannot restore the "main"
1122 * coroutine as Coro has no such concept 1435 * coroutine as Coro has no such concept.
1436 * This actually isn't valid with the pthread backend, but OSes requiring
1437 * that backend are too broken to do it in a standards-compliant way.
1123 */ 1438 */
1124 PL_top_env = main_top_env; 1439 PL_top_env = main_top_env;
1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1440 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 } 1441 }
1127} 1442}
… …
1204cctx_destroy (coro_cctx *cctx) 1519cctx_destroy (coro_cctx *cctx)
1205{ 1520{
1206 if (!cctx) 1521 if (!cctx)
1207 return; 1522 return;
1208 1523
1524 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1525
1209 --cctx_count; 1526 --cctx_count;
1210 coro_destroy (&cctx->cctx); 1527 coro_destroy (&cctx->cctx);
1211 1528
1212 /* coro_transfer creates new, empty cctx's */ 1529 /* coro_transfer creates new, empty cctx's */
1213 if (cctx->sptr) 1530 if (cctx->sptr)
… …
1276 /* TODO: throwing up here is considered harmful */ 1593 /* TODO: throwing up here is considered harmful */
1277 1594
1278 if (expect_true (prev != next)) 1595 if (expect_true (prev != next))
1279 { 1596 {
1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1597 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1598 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1282 1599
1283 if (expect_false (next->flags & CF_RUNNING)) 1600 if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1285
1286 if (expect_false (next->flags & CF_DESTROYED))
1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1601 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1288 1602
1289#if !PERL_VERSION_ATLEAST (5,10,0) 1603#if !PERL_VERSION_ATLEAST (5,10,0)
1290 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1604 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1605 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1292#endif 1606#endif
… …
1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1612transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1299{ 1613{
1300 dSTACKLEVEL; 1614 dSTACKLEVEL;
1301 1615
1302 /* sometimes transfer is only called to set idle_sp */ 1616 /* sometimes transfer is only called to set idle_sp */
1303 if (expect_false (!next)) 1617 if (expect_false (!prev))
1304 { 1618 {
1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1619 cctx_current->idle_sp = STACKLEVEL;
1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1620 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1307 } 1621 }
1308 else if (expect_true (prev != next)) 1622 else if (expect_true (prev != next))
1309 { 1623 {
1310 coro_cctx *prev__cctx; 1624 coro_cctx *cctx_prev;
1311 1625
1312 if (expect_false (prev->flags & CF_NEW)) 1626 if (expect_false (prev->flags & CF_NEW))
1313 { 1627 {
1314 /* create a new empty/source context */ 1628 /* create a new empty/source context */
1315 prev->cctx = cctx_new_empty ();
1316 prev->flags &= ~CF_NEW; 1629 prev->flags &= ~CF_NEW;
1317 prev->flags |= CF_RUNNING; 1630 prev->flags |= CF_RUNNING;
1318 } 1631 }
1319 1632
1320 prev->flags &= ~CF_RUNNING; 1633 prev->flags &= ~CF_RUNNING;
… …
1326 if (expect_false (next->flags & CF_NEW)) 1639 if (expect_false (next->flags & CF_NEW))
1327 { 1640 {
1328 /* need to start coroutine */ 1641 /* need to start coroutine */
1329 next->flags &= ~CF_NEW; 1642 next->flags &= ~CF_NEW;
1330 /* setup coroutine call */ 1643 /* setup coroutine call */
1331 coro_setup (aTHX_ next); 1644 init_perl (aTHX_ next);
1332 } 1645 }
1333 else 1646 else
1334 load_perl (aTHX_ next); 1647 load_perl (aTHX_ next);
1335 1648
1336 prev__cctx = prev->cctx;
1337
1338 /* possibly untie and reuse the cctx */ 1649 /* possibly untie and reuse the cctx */
1339 if (expect_true ( 1650 if (expect_true (
1340 prev__cctx->idle_sp == (void *)stacklevel 1651 cctx_current->idle_sp == STACKLEVEL
1341 && !(prev__cctx->flags & CC_TRACE) 1652 && !(cctx_current->flags & CC_TRACE)
1342 && !force_cctx 1653 && !force_cctx
1343 )) 1654 ))
1344 { 1655 {
1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1656 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1657 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1347 1658
1348 prev->cctx = 0;
1349
1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1659 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1660 /* without this the next cctx_get might destroy the running cctx while still in use */
1352 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1661 if (expect_false (CCTX_EXPIRED (cctx_current)))
1353 if (!next->cctx) 1662 if (expect_true (!next->cctx))
1354 next->cctx = cctx_get (aTHX); 1663 next->cctx = cctx_get (aTHX);
1355 1664
1356 cctx_put (prev__cctx); 1665 cctx_put (cctx_current);
1357 } 1666 }
1667 else
1668 prev->cctx = cctx_current;
1358 1669
1359 ++next->usecount; 1670 ++next->usecount;
1360 1671
1361 if (expect_true (!next->cctx)) 1672 cctx_prev = cctx_current;
1362 next->cctx = cctx_get (aTHX); 1673 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1363 1674
1364 if (expect_false (prev__cctx != next->cctx)) 1675 next->cctx = 0;
1676
1677 if (expect_false (cctx_prev != cctx_current))
1365 { 1678 {
1366 prev__cctx->top_env = PL_top_env; 1679 cctx_prev->top_env = PL_top_env;
1367 PL_top_env = next->cctx->top_env; 1680 PL_top_env = cctx_current->top_env;
1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1681 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1369 } 1682 }
1370 1683
1371 transfer_tail (aTHX); 1684 transfer_tail (aTHX);
1372 } 1685 }
1373} 1686}
… …
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1688#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1689#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1690
1378/** high level stuff ********************************************************/ 1691/** high level stuff ********************************************************/
1379 1692
1693/* this function is actually Coro, not Coro::State, but we call it from here */
1694/* because it is convenient - but it hasn't been declared yet for that reason */
1380static int 1695static void
1696coro_call_on_destroy (pTHX_ struct coro *coro);
1697
1698static void
1381coro_state_destroy (pTHX_ struct coro *coro) 1699coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1700{
1383 if (coro->flags & CF_DESTROYED) 1701 if (coro->flags & CF_ZOMBIE)
1384 return 0; 1702 return;
1385 1703
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro); 1704 slf_destroy (aTHX_ coro);
1388 1705
1389 coro->flags |= CF_DESTROYED; 1706 coro->flags |= CF_ZOMBIE;
1390 1707
1391 if (coro->flags & CF_READY) 1708 if (coro->flags & CF_READY)
1392 { 1709 {
1393 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1710 /* reduce nready, as destroying a ready coro effectively unreadies it */
1394 /* alternative: look through all ready queues and remove the coro */ 1711 /* alternative: look through all ready queues and remove the coro */
1395 --coro_nready; 1712 --coro_nready;
1396 } 1713 }
1397 else 1714 else
1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1715 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1399 1716
1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1401 {
1402 struct coro temp;
1403
1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1405
1406 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro);
1408
1409 coro_destruct (aTHX_ coro);
1410
1411 load_perl (aTHX_ &temp);
1412
1413 coro->slot = 0;
1414 }
1415
1416 cctx_destroy (coro->cctx);
1417 SvREFCNT_dec (coro->args);
1418
1419 if (coro->next) coro->next->prev = coro->prev; 1717 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1718 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1719 if (coro == coro_first) coro_first = coro->next;
1422 1720
1423 return 1; 1721 if (coro->mainstack
1722 && coro->mainstack != main_mainstack
1723 && coro->slot
1724 && !PL_dirty)
1725 destroy_perl (aTHX_ coro);
1726
1727 cctx_destroy (coro->cctx);
1728 SvREFCNT_dec (coro->startcv);
1729 SvREFCNT_dec (coro->args);
1730 SvREFCNT_dec (coro->swap_sv);
1731 SvREFCNT_dec (CORO_THROW);
1732
1733 coro_call_on_destroy (aTHX_ coro);
1734
1735 /* more destruction mayhem in coro_state_free */
1424} 1736}
1425 1737
1426static int 1738static int
1427coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1739coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1428{ 1740{
1429 struct coro *coro = (struct coro *)mg->mg_ptr; 1741 struct coro *coro = (struct coro *)mg->mg_ptr;
1430 mg->mg_ptr = 0; 1742 mg->mg_ptr = 0;
1431 1743
1432 coro->hv = 0;
1433
1434 if (--coro->refcnt < 0)
1435 {
1436 coro_state_destroy (aTHX_ coro); 1744 coro_state_destroy (aTHX_ coro);
1745 SvREFCNT_dec (coro->on_destroy);
1746 SvREFCNT_dec (coro->status);
1747
1437 Safefree (coro); 1748 Safefree (coro);
1438 }
1439 1749
1440 return 0; 1750 return 0;
1441} 1751}
1442 1752
1443static int 1753static int
1444coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1754coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1445{ 1755{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1756 /* called when perl clones the current process the slow way (windows process emulation) */
1447 1757 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1448 ++coro->refcnt; 1758 mg->mg_ptr = 0;
1759 mg->mg_virtual = 0;
1449 1760
1450 return 0; 1761 return 0;
1451} 1762}
1452 1763
1453static MGVTBL coro_state_vtbl = { 1764static MGVTBL coro_state_vtbl = {
… …
1481/** Coro ********************************************************************/ 1792/** Coro ********************************************************************/
1482 1793
1483INLINE void 1794INLINE void
1484coro_enq (pTHX_ struct coro *coro) 1795coro_enq (pTHX_ struct coro *coro)
1485{ 1796{
1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1797 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1487}
1488 1798
1489INLINE SV * 1799 SvREFCNT_inc_NN (coro->hv);
1800
1801 coro->next_ready = 0;
1802 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1803 ready [1] = coro;
1804}
1805
1806INLINE struct coro *
1490coro_deq (pTHX) 1807coro_deq (pTHX)
1491{ 1808{
1492 int prio; 1809 int prio;
1493 1810
1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1811 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1495 if (AvFILLp (coro_ready [prio]) >= 0) 1812 {
1496 return av_shift (coro_ready [prio]); 1813 struct coro **ready = coro_ready [prio];
1814
1815 if (ready [0])
1816 {
1817 struct coro *coro = ready [0];
1818 ready [0] = coro->next_ready;
1819 return coro;
1820 }
1821 }
1497 1822
1498 return 0; 1823 return 0;
1824}
1825
1826static void
1827invoke_sv_ready_hook_helper (void)
1828{
1829 dTHX;
1830 dSP;
1831
1832 ENTER;
1833 SAVETMPS;
1834
1835 PUSHMARK (SP);
1836 PUTBACK;
1837 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1838
1839 FREETMPS;
1840 LEAVE;
1499} 1841}
1500 1842
1501static int 1843static int
1502api_ready (pTHX_ SV *coro_sv) 1844api_ready (pTHX_ SV *coro_sv)
1503{ 1845{
1504 struct coro *coro;
1505 SV *sv_hook;
1506 void (*xs_hook)(void);
1507
1508 if (SvROK (coro_sv))
1509 coro_sv = SvRV (coro_sv);
1510
1511 coro = SvSTATE (coro_sv); 1846 struct coro *coro = SvSTATE (coro_sv);
1512 1847
1513 if (coro->flags & CF_READY) 1848 if (coro->flags & CF_READY)
1514 return 0; 1849 return 0;
1515 1850
1516 coro->flags |= CF_READY; 1851 coro->flags |= CF_READY;
1517 1852
1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1520
1521 coro_enq (aTHX_ coro); 1853 coro_enq (aTHX_ coro);
1522 ++coro_nready;
1523 1854
1524 if (sv_hook) 1855 if (!coro_nready++)
1525 { 1856 if (coroapi.readyhook)
1526 dSP; 1857 coroapi.readyhook ();
1527
1528 ENTER;
1529 SAVETMPS;
1530
1531 PUSHMARK (SP);
1532 PUTBACK;
1533 call_sv (sv_hook, G_DISCARD);
1534 SPAGAIN;
1535
1536 FREETMPS;
1537 LEAVE;
1538 }
1539
1540 if (xs_hook)
1541 xs_hook ();
1542 1858
1543 return 1; 1859 return 1;
1544} 1860}
1545 1861
1546static int 1862static int
1547api_is_ready (pTHX_ SV *coro_sv) 1863api_is_ready (pTHX_ SV *coro_sv)
1548{ 1864{
1549 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1865 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1550} 1866}
1551 1867
1868/* expects to own a reference to next->hv */
1552INLINE void 1869INLINE void
1553prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1870prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1554{ 1871{
1555 SV *prev_sv, *next_sv;
1556
1557 for (;;)
1558 {
1559 next_sv = coro_deq (aTHX);
1560
1561 /* nothing to schedule: call the idle handler */
1562 if (expect_false (!next_sv))
1563 {
1564 dSP;
1565
1566 ENTER;
1567 SAVETMPS;
1568
1569 PUSHMARK (SP);
1570 PUTBACK;
1571 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1572 SPAGAIN;
1573
1574 FREETMPS;
1575 LEAVE;
1576 continue;
1577 }
1578
1579 ta->next = SvSTATE_hv (next_sv);
1580
1581 /* cannot transfer to destroyed coros, skip and look for next */
1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1583 {
1584 SvREFCNT_dec (next_sv);
1585 /* coro_nready has already been taken care of by destroy */
1586 continue;
1587 }
1588
1589 --coro_nready;
1590 break;
1591 }
1592
1593 /* free this only after the transfer */
1594 prev_sv = SvRV (coro_current); 1872 SV *prev_sv = SvRV (coro_current);
1873
1595 ta->prev = SvSTATE_hv (prev_sv); 1874 ta->prev = SvSTATE_hv (prev_sv);
1875 ta->next = next;
1876
1596 TRANSFER_CHECK (*ta); 1877 TRANSFER_CHECK (*ta);
1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1878
1598 ta->next->flags &= ~CF_READY;
1599 SvRV_set (coro_current, next_sv); 1879 SvRV_set (coro_current, (SV *)next->hv);
1600 1880
1601 free_coro_mortal (aTHX); 1881 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv; 1882 coro_mortal = prev_sv;
1603} 1883}
1604 1884
1885static void
1886prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1887{
1888 for (;;)
1889 {
1890 struct coro *next = coro_deq (aTHX);
1891
1892 if (expect_true (next))
1893 {
1894 /* cannot transfer to destroyed coros, skip and look for next */
1895 if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1896 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1897 else
1898 {
1899 next->flags &= ~CF_READY;
1900 --coro_nready;
1901
1902 prepare_schedule_to (aTHX_ ta, next);
1903 break;
1904 }
1905 }
1906 else
1907 {
1908 /* nothing to schedule: call the idle handler */
1909 if (SvROK (sv_idle)
1910 && SvOBJECT (SvRV (sv_idle)))
1911 {
1912 if (SvRV (sv_idle) == SvRV (coro_current))
1913 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1914
1915 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1916 api_ready (aTHX_ SvRV (sv_idle));
1917 --coro_nready;
1918 }
1919 else
1920 {
1921 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1922 dSP;
1923
1924 ENTER;
1925 SAVETMPS;
1926
1927 PUSHMARK (SP);
1928 PUTBACK;
1929 call_sv (sv_idle, G_VOID | G_DISCARD);
1930
1931 FREETMPS;
1932 LEAVE;
1933 }
1934 }
1935 }
1936}
1937
1605INLINE void 1938INLINE void
1606prepare_cede (pTHX_ struct coro_transfer_args *ta) 1939prepare_cede (pTHX_ struct coro_transfer_args *ta)
1607{ 1940{
1608 api_ready (aTHX_ coro_current); 1941 api_ready (aTHX_ coro_current);
1609 prepare_schedule (aTHX_ ta); 1942 prepare_schedule (aTHX_ ta);
… …
1628{ 1961{
1629 struct coro_transfer_args ta; 1962 struct coro_transfer_args ta;
1630 1963
1631 prepare_schedule (aTHX_ &ta); 1964 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1); 1965 TRANSFER (ta, 1);
1966}
1967
1968static void
1969api_schedule_to (pTHX_ SV *coro_sv)
1970{
1971 struct coro_transfer_args ta;
1972 struct coro *next = SvSTATE (coro_sv);
1973
1974 SvREFCNT_inc_NN (coro_sv);
1975 prepare_schedule_to (aTHX_ &ta, next);
1633} 1976}
1634 1977
1635static int 1978static int
1636api_cede (pTHX) 1979api_cede (pTHX)
1637{ 1980{
… …
1666static void 2009static void
1667api_trace (pTHX_ SV *coro_sv, int flags) 2010api_trace (pTHX_ SV *coro_sv, int flags)
1668{ 2011{
1669 struct coro *coro = SvSTATE (coro_sv); 2012 struct coro *coro = SvSTATE (coro_sv);
1670 2013
2014 if (coro->flags & CF_RUNNING)
2015 croak ("cannot enable tracing on a running coroutine, caught");
2016
1671 if (flags & CC_TRACE) 2017 if (flags & CC_TRACE)
1672 { 2018 {
1673 if (!coro->cctx) 2019 if (!coro->cctx)
1674 coro->cctx = cctx_new_run (); 2020 coro->cctx = cctx_new_run ();
1675 else if (!(coro->cctx->flags & CC_TRACE)) 2021 else if (!(coro->cctx->flags & CC_TRACE))
1676 croak ("cannot enable tracing on coroutine with custom stack,"); 2022 croak ("cannot enable tracing on coroutine with custom stack, caught");
1677 2023
1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2024 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1679 } 2025 }
1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2026 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1681 { 2027 {
… …
1684 if (coro->flags & CF_RUNNING) 2030 if (coro->flags & CF_RUNNING)
1685 PL_runops = RUNOPS_DEFAULT; 2031 PL_runops = RUNOPS_DEFAULT;
1686 else 2032 else
1687 coro->slot->runops = RUNOPS_DEFAULT; 2033 coro->slot->runops = RUNOPS_DEFAULT;
1688 } 2034 }
2035}
2036
2037static void
2038coro_push_av (pTHX_ AV *av, I32 gimme_v)
2039{
2040 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2041 {
2042 dSP;
2043
2044 if (gimme_v == G_SCALAR)
2045 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2046 else
2047 {
2048 int i;
2049 EXTEND (SP, AvFILLp (av) + 1);
2050
2051 for (i = 0; i <= AvFILLp (av); ++i)
2052 PUSHs (AvARRAY (av)[i]);
2053 }
2054
2055 PUTBACK;
2056 }
2057}
2058
2059static void
2060coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2061{
2062 if (!coro->on_destroy)
2063 coro->on_destroy = newAV ();
2064
2065 av_push (coro->on_destroy, cb);
2066}
2067
2068static void
2069slf_destroy_join (pTHX_ struct CoroSLF *frame)
2070{
2071 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2072}
2073
2074static int
2075slf_check_join (pTHX_ struct CoroSLF *frame)
2076{
2077 struct coro *coro = (struct coro *)frame->data;
2078
2079 if (!coro->status)
2080 return 1;
2081
2082 frame->destroy = 0;
2083
2084 coro_push_av (aTHX_ coro->status, GIMME_V);
2085
2086 SvREFCNT_dec ((SV *)coro->hv);
2087
2088 return 0;
2089}
2090
2091static void
2092slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2095
2096 if (items > 1)
2097 croak ("join called with too many arguments");
2098
2099 if (coro->status)
2100 frame->prepare = prepare_nop;
2101 else
2102 {
2103 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2104 frame->prepare = prepare_schedule;
2105 }
2106
2107 frame->check = slf_check_join;
2108 frame->destroy = slf_destroy_join;
2109 frame->data = (void *)coro;
2110 SvREFCNT_inc (coro->hv);
2111}
2112
2113static void
2114coro_call_on_destroy (pTHX_ struct coro *coro)
2115{
2116 AV *od = coro->on_destroy;
2117
2118 if (!od)
2119 return;
2120
2121 while (AvFILLp (od) >= 0)
2122 {
2123 SV *cb = sv_2mortal (av_pop (od));
2124
2125 /* coro hv's (and only hv's at the moment) are supported as well */
2126 if (SvSTATEhv_p (aTHX_ cb))
2127 api_ready (aTHX_ cb);
2128 else
2129 {
2130 dSP; /* don't disturb outer sp */
2131 PUSHMARK (SP);
2132
2133 if (coro->status)
2134 {
2135 PUTBACK;
2136 coro_push_av (aTHX_ coro->status, G_ARRAY);
2137 SPAGAIN;
2138 }
2139
2140 PUTBACK;
2141 call_sv (cb, G_VOID | G_DISCARD);
2142 }
2143 }
2144}
2145
2146static void
2147coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2148{
2149 AV *av;
2150
2151 if (coro->status)
2152 {
2153 av = coro->status;
2154 av_clear (av);
2155 }
2156 else
2157 av = coro->status = newAV ();
2158
2159 /* items are actually not so common, so optimise for this case */
2160 if (items)
2161 {
2162 int i;
2163
2164 av_extend (av, items - 1);
2165
2166 for (i = 0; i < items; ++i)
2167 av_push (av, SvREFCNT_inc_NN (arg [i]));
2168 }
2169}
2170
2171static void
2172slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2173{
2174 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2175 api_ready (aTHX_ sv_manager);
2176
2177 frame->prepare = prepare_schedule;
2178 frame->check = slf_check_repeat;
2179
2180 /* as a minor optimisation, we could unwind all stacks here */
2181 /* but that puts extra pressure on pp_slf, and is not worth much */
2182 /*coro_unwind_stacks (aTHX);*/
2183}
2184
2185static void
2186slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 HV *coro_hv = (HV *)SvRV (coro_current);
2189
2190 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2191 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2192}
2193
2194static void
2195slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 HV *coro_hv;
2198 struct coro *coro;
2199
2200 if (items <= 0)
2201 croak ("Coro::cancel called without coro object,");
2202
2203 coro = SvSTATE (arg [0]);
2204 coro_hv = coro->hv;
2205
2206 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2207
2208 if (expect_false (coro->flags & CF_NOCANCEL))
2209 {
2210 /* coro currently busy cancelling something, so just notify it */
2211 coro->slf_frame.data = (void *)coro;
2212
2213 frame->prepare = prepare_nop;
2214 frame->check = slf_check_nop;
2215 }
2216 else if (coro_hv == (HV *)SvRV (coro_current))
2217 {
2218 /* cancelling the current coro is allowed, and equals terminate */
2219 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2220 }
2221 else
2222 {
2223 struct coro *self = SvSTATE_current;
2224
2225 /* otherwise we cancel directly, purely for speed reasons
2226 * unfortunately, this requires some magic trickery, as
2227 * somebody else could cancel us, so we have to fight the cancellation.
2228 * this is ugly, and hopefully fully worth the extra speed.
2229 * besides, I can't get the slow-but-safe version working...
2230 */
2231 slf_frame.data = 0;
2232 self->flags |= CF_NOCANCEL;
2233 coro_state_destroy (aTHX_ coro);
2234 self->flags &= ~CF_NOCANCEL;
2235
2236 if (slf_frame.data)
2237 {
2238 /* while we were busy we have been cancelled, so terminate */
2239 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2240 }
2241 else
2242 {
2243 frame->prepare = prepare_nop;
2244 frame->check = slf_check_nop;
2245 }
2246 }
2247}
2248
2249static int
2250slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2251{
2252 frame->prepare = 0;
2253 coro_unwind_stacks (aTHX);
2254
2255 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2256
2257 return 1;
2258}
2259
2260static int
2261safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2262{
2263 if (coro->cctx)
2264 croak ("coro inside C callback, unable to cancel at this time, caught");
2265
2266 if (coro->flags & CF_NEW)
2267 {
2268 coro_set_status (aTHX_ coro, arg, items);
2269 coro_state_destroy (aTHX_ coro);
2270 }
2271 else
2272 {
2273 if (!coro->slf_frame.prepare)
2274 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2275
2276 slf_destroy (aTHX_ coro);
2277
2278 coro_set_status (aTHX_ coro, arg, items);
2279 coro->slf_frame.prepare = prepare_nop;
2280 coro->slf_frame.check = slf_check_safe_cancel;
2281
2282 api_ready (aTHX_ (SV *)coro->hv);
2283 }
2284
2285 return 1;
2286}
2287
2288/*****************************************************************************/
2289/* async pool handler */
2290
2291static int
2292slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2293{
2294 HV *hv = (HV *)SvRV (coro_current);
2295 struct coro *coro = (struct coro *)frame->data;
2296
2297 if (!coro->invoke_cb)
2298 return 1; /* loop till we have invoke */
2299 else
2300 {
2301 hv_store (hv, "desc", sizeof ("desc") - 1,
2302 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2303
2304 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2305
2306 {
2307 dSP;
2308 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2309 PUTBACK;
2310 }
2311
2312 SvREFCNT_dec (GvAV (PL_defgv));
2313 GvAV (PL_defgv) = coro->invoke_av;
2314 coro->invoke_av = 0;
2315
2316 return 0;
2317 }
2318}
2319
2320static void
2321slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = SvSTATE_hv ((SV *)hv);
2325
2326 if (expect_true (coro->saved_deffh))
2327 {
2328 /* subsequent iteration */
2329 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2330 coro->saved_deffh = 0;
2331
2332 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2333 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2334 {
2335 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2336 return;
2337 }
2338 else
2339 {
2340 av_clear (GvAV (PL_defgv));
2341 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2342
2343 coro->prio = 0;
2344
2345 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2346 api_trace (aTHX_ coro_current, 0);
2347
2348 frame->prepare = prepare_schedule;
2349 av_push (av_async_pool, SvREFCNT_inc (hv));
2350 }
2351 }
2352 else
2353 {
2354 /* first iteration, simply fall through */
2355 frame->prepare = prepare_nop;
2356 }
2357
2358 frame->check = slf_check_pool_handler;
2359 frame->data = (void *)coro;
2360}
2361
2362/*****************************************************************************/
2363/* rouse callback */
2364
2365#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2366
2367static void
2368coro_rouse_callback (pTHX_ CV *cv)
2369{
2370 dXSARGS;
2371 SV *data = (SV *)S_GENSUB_ARG;
2372
2373 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2374 {
2375 /* first call, set args */
2376 SV *coro = SvRV (data);
2377 AV *av = newAV ();
2378
2379 SvRV_set (data, (SV *)av);
2380
2381 /* better take a full copy of the arguments */
2382 while (items--)
2383 av_store (av, items, newSVsv (ST (items)));
2384
2385 api_ready (aTHX_ coro);
2386 SvREFCNT_dec (coro);
2387 }
2388
2389 XSRETURN_EMPTY;
2390}
2391
2392static int
2393slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2394{
2395 SV *data = (SV *)frame->data;
2396
2397 if (CORO_THROW)
2398 return 0;
2399
2400 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2401 return 1;
2402
2403 /* now push all results on the stack */
2404 {
2405 dSP;
2406 AV *av = (AV *)SvRV (data);
2407 int i;
2408
2409 EXTEND (SP, AvFILLp (av) + 1);
2410 for (i = 0; i <= AvFILLp (av); ++i)
2411 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2412
2413 /* we have stolen the elements, so set length to zero and free */
2414 AvFILLp (av) = -1;
2415 av_undef (av);
2416
2417 PUTBACK;
2418 }
2419
2420 return 0;
2421}
2422
2423static void
2424slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2425{
2426 SV *cb;
2427
2428 if (items)
2429 cb = arg [0];
2430 else
2431 {
2432 struct coro *coro = SvSTATE_current;
2433
2434 if (!coro->rouse_cb)
2435 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2436
2437 cb = sv_2mortal (coro->rouse_cb);
2438 coro->rouse_cb = 0;
2439 }
2440
2441 if (!SvROK (cb)
2442 || SvTYPE (SvRV (cb)) != SVt_PVCV
2443 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2444 croak ("Coro::rouse_wait called with illegal callback argument,");
2445
2446 {
2447 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2448 SV *data = (SV *)S_GENSUB_ARG;
2449
2450 frame->data = (void *)data;
2451 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2452 frame->check = slf_check_rouse_wait;
2453 }
2454}
2455
2456static SV *
2457coro_new_rouse_cb (pTHX)
2458{
2459 HV *hv = (HV *)SvRV (coro_current);
2460 struct coro *coro = SvSTATE_hv (hv);
2461 SV *data = newRV_inc ((SV *)hv);
2462 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2463
2464 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2465 SvREFCNT_dec (data); /* magicext increases the refcount */
2466
2467 SvREFCNT_dec (coro->rouse_cb);
2468 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2469
2470 return cb;
1689} 2471}
1690 2472
1691/*****************************************************************************/ 2473/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */ 2474/* schedule-like-function opcode (SLF) */
1693 2475
… …
1717 2499
1718 RETURNOP (slf_restore.op_first); 2500 RETURNOP (slf_restore.op_first);
1719} 2501}
1720 2502
1721static void 2503static void
1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1723{
1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1725}
1726
1727static void
1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1729{
1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2504slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{ 2505{
1740 SV **arg = (SV **)slf_frame.data; 2506 SV **arg = (SV **)slf_frame.data;
1741 2507
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2508 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1759 frame->prepare = prepare_schedule; 2525 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop; 2526 frame->check = slf_check_nop;
1761} 2527}
1762 2528
1763static void 2529static void
2530slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2531{
2532 struct coro *next = (struct coro *)slf_frame.data;
2533
2534 SvREFCNT_inc_NN (next->hv);
2535 prepare_schedule_to (aTHX_ ta, next);
2536}
2537
2538static void
2539slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2540{
2541 if (!items)
2542 croak ("Coro::schedule_to expects a coroutine argument, caught");
2543
2544 frame->data = (void *)SvSTATE (arg [0]);
2545 frame->prepare = slf_prepare_schedule_to;
2546 frame->check = slf_check_nop;
2547}
2548
2549static void
2550slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 api_ready (aTHX_ SvRV (coro_current));
2553
2554 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2555}
2556
2557static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2558slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{ 2559{
1766 frame->prepare = prepare_cede; 2560 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop; 2561 frame->check = slf_check_nop;
1768} 2562}
… …
1772{ 2566{
1773 frame->prepare = prepare_cede_notself; 2567 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop; 2568 frame->check = slf_check_nop;
1775} 2569}
1776 2570
1777/* we hijack an hopefully unused CV flag for our purposes */ 2571/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1778#define CVf_SLF 0x4000 2572static void
2573slf_destroy (pTHX_ struct coro *coro)
2574{
2575 /* this callback is reserved for slf functions needing to do cleanup */
2576 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2577 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2578
2579 /*
2580 * The on_destroy above most likely is from an SLF call.
2581 * Since by definition the SLF call will not finish when we destroy
2582 * the coro, we will have to force-finish it here, otherwise
2583 * cleanup functions cannot call SLF functions.
2584 */
2585 coro->slf_frame.prepare = 0;
2586}
1779 2587
1780/* 2588/*
1781 * these not obviously related functions are all rolled into one 2589 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2590 * function to increase chances that they all will call transfer with the same
1783 * stack offset 2591 * stack offset
… …
1839 } 2647 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2648 while (slf_frame.check (aTHX_ &slf_frame));
1841 2649
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2650 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2651
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */ 2652 /* exception handling */
1863 if (expect_false (coro_throw)) 2653 if (expect_false (CORO_THROW))
1864 { 2654 {
1865 SV *exception = sv_2mortal (coro_throw); 2655 SV *exception = sv_2mortal (CORO_THROW);
1866 2656
1867 coro_throw = 0; 2657 CORO_THROW = 0;
1868 sv_setsv (ERRSV, exception); 2658 sv_setsv (ERRSV, exception);
1869 croak (0); 2659 croak (0);
2660 }
2661
2662 /* return value handling - mostly like entersub */
2663 /* make sure we put something on the stack in scalar context */
2664 if (GIMME_V == G_SCALAR
2665 && expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2666 {
2667 dSP;
2668 SV **bot = PL_stack_base + checkmark;
2669
2670 if (sp == bot) /* too few, push undef */
2671 bot [1] = &PL_sv_undef;
2672 else /* too many, take last one */
2673 bot [1] = *sp;
2674
2675 SP = bot + 1;
2676
2677 PUTBACK;
1870 } 2678 }
1871 2679
1872 return NORMAL; 2680 return NORMAL;
1873} 2681}
1874 2682
… …
1902 if (PL_op->op_flags & OPf_STACKED) 2710 if (PL_op->op_flags & OPf_STACKED)
1903 { 2711 {
1904 if (items > slf_arga) 2712 if (items > slf_arga)
1905 { 2713 {
1906 slf_arga = items; 2714 slf_arga = items;
1907 free (slf_argv); 2715 Safefree (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *)); 2716 New (0, slf_argv, slf_arga, SV *);
1909 } 2717 }
1910 2718
1911 slf_argc = items; 2719 slf_argc = items;
1912 2720
1913 for (i = 0; i < items; ++i) 2721 for (i = 0; i < items; ++i)
… …
1915 } 2723 }
1916 else 2724 else
1917 slf_argc = 0; 2725 slf_argc = 0;
1918 2726
1919 PL_op->op_ppaddr = pp_slf; 2727 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2728 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1921 2729
1922 PL_op = (OP *)&slf_restore; 2730 PL_op = (OP *)&slf_restore;
2731}
2732
2733/*****************************************************************************/
2734/* dynamic wind */
2735
2736static void
2737on_enterleave_call (pTHX_ SV *cb)
2738{
2739 dSP;
2740
2741 PUSHSTACK;
2742
2743 PUSHMARK (SP);
2744 PUTBACK;
2745 call_sv (cb, G_VOID | G_DISCARD);
2746 SPAGAIN;
2747
2748 POPSTACK;
2749}
2750
2751static SV *
2752coro_avp_pop_and_free (pTHX_ AV **avp)
2753{
2754 AV *av = *avp;
2755 SV *res = av_pop (av);
2756
2757 if (AvFILLp (av) < 0)
2758 {
2759 *avp = 0;
2760 SvREFCNT_dec (av);
2761 }
2762
2763 return res;
2764}
2765
2766static void
2767coro_pop_on_enter (pTHX_ void *coro)
2768{
2769 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2770 SvREFCNT_dec (cb);
2771}
2772
2773static void
2774coro_pop_on_leave (pTHX_ void *coro)
2775{
2776 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2777 on_enterleave_call (aTHX_ sv_2mortal (cb));
1923} 2778}
1924 2779
1925/*****************************************************************************/ 2780/*****************************************************************************/
1926/* PerlIO::cede */ 2781/* PerlIO::cede */
1927 2782
… …
1996 PerlIOBuf_get_cnt, 2851 PerlIOBuf_get_cnt,
1997 PerlIOBuf_set_ptrcnt, 2852 PerlIOBuf_set_ptrcnt,
1998}; 2853};
1999 2854
2000/*****************************************************************************/ 2855/*****************************************************************************/
2856/* Coro::Semaphore & Coro::Signal */
2857
2858static SV *
2859coro_waitarray_new (pTHX_ int count)
2860{
2861 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2862 AV *av = newAV ();
2863 SV **ary;
2864
2865 /* unfortunately, building manually saves memory */
2866 Newx (ary, 2, SV *);
2867 AvALLOC (av) = ary;
2868#if PERL_VERSION_ATLEAST (5,10,0)
2869 AvARRAY (av) = ary;
2870#else
2871 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2872 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2873 SvPVX ((SV *)av) = (char *)ary;
2874#endif
2875 AvMAX (av) = 1;
2876 AvFILLp (av) = 0;
2877 ary [0] = newSViv (count);
2878
2879 return newRV_noinc ((SV *)av);
2880}
2881
2001/* Coro::Semaphore */ 2882/* semaphore */
2002 2883
2003static void 2884static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2885coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{ 2886{
2006 SV *count_sv = AvARRAY (av)[0]; 2887 SV *count_sv = AvARRAY (av)[0];
… …
2018 AvARRAY (av)[0] = AvARRAY (av)[1]; 2899 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv; 2900 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av); 2901 cb = av_shift (av);
2021 2902
2022 if (SvOBJECT (cb)) 2903 if (SvOBJECT (cb))
2904 {
2023 api_ready (aTHX_ cb); 2905 api_ready (aTHX_ cb);
2024 else 2906 --count;
2025 croak ("callbacks not yet supported"); 2907 }
2908 else if (SvTYPE (cb) == SVt_PVCV)
2909 {
2910 dSP;
2911 PUSHMARK (SP);
2912 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2913 PUTBACK;
2914 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2915 }
2026 2916
2027 SvREFCNT_dec (cb); 2917 SvREFCNT_dec (cb);
2028
2029 --count;
2030 } 2918 }
2031} 2919}
2032 2920
2033static void 2921static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2922coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2035{ 2923{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2924 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2925 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2038} 2926}
2039 2927
2040static int 2928static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2929slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2042{ 2930{
2043 AV *av = (AV *)frame->data; 2931 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0]; 2932 SV *count_sv = AvARRAY (av)[0];
2933 SV *coro_hv = SvRV (coro_current);
2045 2934
2935 /* if we are about to throw, don't actually acquire the lock, just throw */
2936 if (CORO_THROW)
2937 return 0;
2046 if (SvIVX (count_sv) > 0) 2938 else if (SvIVX (count_sv) > 0)
2047 { 2939 {
2048 SvSTATE_current->on_destroy = 0; 2940 frame->destroy = 0;
2941
2942 if (acquire)
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2943 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2944 else
2945 coro_semaphore_adjust (aTHX_ av, 0);
2946
2050 return 0; 2947 return 0;
2051 } 2948 }
2052 else 2949 else
2053 { 2950 {
2054 int i; 2951 int i;
2055 /* if we were woken up but can't down, we look through the whole */ 2952 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */ 2953 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */ 2954 /* this avoids some degenerate memory usage cases */
2058 2955 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current)) 2956 if (AvARRAY (av)[i] == coro_hv)
2061 return 1; 2957 return 1;
2062 2958
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2959 av_push (av, SvREFCNT_inc (coro_hv));
2064 return 1; 2960 return 1;
2065 } 2961 }
2066} 2962}
2067 2963
2068static void 2964static int
2965slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2966{
2967 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2968}
2969
2970static int
2971slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2972{
2973 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2974}
2975
2976static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2977slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{ 2978{
2071 AV *av = (AV *)SvRV (arg [0]); 2979 AV *av = (AV *)SvRV (arg [0]);
2072 2980
2073 if (SvIVX (AvARRAY (av)[0]) > 0) 2981 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 { 2982 {
2075 frame->data = (void *)av; 2983 frame->data = (void *)av;
2076 frame->prepare = prepare_nop; 2984 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2985 }
2079 else 2986 else
2080 { 2987 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2988 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082 2989
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2990 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule; 2991 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */ 2992 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2993 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2994 frame->destroy = coro_semaphore_destroy;
2090 } 2995 }
2996}
2091 2997
2998static void
2999slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3000{
3001 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2092 frame->check = slf_check_semaphore_down; 3002 frame->check = slf_check_semaphore_down;
2093
2094} 3003}
2095 3004
2096/*****************************************************************************/ 3005static void
2097/* gensub: simple closure generation utility */ 3006slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 3007{
2107 CV *cv = (CV *)newSV (0); 3008 if (items >= 2)
3009 {
3010 /* callback form */
3011 AV *av = (AV *)SvRV (arg [0]);
3012 SV *cb_cv = s_get_cv_croak (arg [1]);
2108 3013
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3014 av_push (av, SvREFCNT_inc_NN (cb_cv));
2110 3015
2111 CvANON_on (cv); 3016 if (SvIVX (AvARRAY (av)[0]) > 0)
2112 CvISXSUB_on (cv); 3017 coro_semaphore_adjust (aTHX_ av, 0);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 3018
2116 return newRV_noinc ((SV *)cv); 3019 frame->prepare = prepare_nop;
3020 frame->check = slf_check_nop;
3021 }
3022 else
3023 {
3024 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3025 frame->check = slf_check_semaphore_wait;
3026 }
3027}
3028
3029/* signal */
3030
3031static void
3032coro_signal_wake (pTHX_ AV *av, int count)
3033{
3034 SvIVX (AvARRAY (av)[0]) = 0;
3035
3036 /* now signal count waiters */
3037 while (count > 0 && AvFILLp (av) > 0)
3038 {
3039 SV *cb;
3040
3041 /* swap first two elements so we can shift a waiter */
3042 cb = AvARRAY (av)[0];
3043 AvARRAY (av)[0] = AvARRAY (av)[1];
3044 AvARRAY (av)[1] = cb;
3045
3046 cb = av_shift (av);
3047
3048 if (SvTYPE (cb) == SVt_PVCV)
3049 {
3050 dSP;
3051 PUSHMARK (SP);
3052 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3053 PUTBACK;
3054 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3055 }
3056 else
3057 {
3058 api_ready (aTHX_ cb);
3059 sv_setiv (cb, 0); /* signal waiter */
3060 }
3061
3062 SvREFCNT_dec (cb);
3063
3064 --count;
3065 }
3066}
3067
3068static int
3069slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3070{
3071 /* if we are about to throw, also stop waiting */
3072 return SvROK ((SV *)frame->data) && !CORO_THROW;
3073}
3074
3075static void
3076slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3077{
3078 AV *av = (AV *)SvRV (arg [0]);
3079
3080 if (items >= 2)
3081 {
3082 SV *cb_cv = s_get_cv_croak (arg [1]);
3083 av_push (av, SvREFCNT_inc_NN (cb_cv));
3084
3085 if (SvIVX (AvARRAY (av)[0]))
3086 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3087
3088 frame->prepare = prepare_nop;
3089 frame->check = slf_check_nop;
3090 }
3091 else if (SvIVX (AvARRAY (av)[0]))
3092 {
3093 SvIVX (AvARRAY (av)[0]) = 0;
3094 frame->prepare = prepare_nop;
3095 frame->check = slf_check_nop;
3096 }
3097 else
3098 {
3099 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3100
3101 av_push (av, waiter);
3102
3103 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3104 frame->prepare = prepare_schedule;
3105 frame->check = slf_check_signal_wait;
3106 }
2117} 3107}
2118 3108
2119/*****************************************************************************/ 3109/*****************************************************************************/
2120/* Coro::AIO */ 3110/* Coro::AIO */
2121 3111
… …
2132 3122
2133static void 3123static void
2134coro_aio_callback (pTHX_ CV *cv) 3124coro_aio_callback (pTHX_ CV *cv)
2135{ 3125{
2136 dXSARGS; 3126 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG; 3127 AV *state = (AV *)S_GENSUB_ARG;
2138 SV *coro = av_pop (state); 3128 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state)); 3129 SV *data_sv = newSV (sizeof (struct io_state));
2140 3130
2141 av_extend (state, items); 3131 av_extend (state, items - 1);
2142 3132
2143 sv_upgrade (data_sv, SVt_PV); 3133 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state)); 3134 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv); 3135 SvPOK_only (data_sv);
2146 3136
… …
2171static int 3161static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3162slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{ 3163{
2174 AV *state = (AV *)frame->data; 3164 AV *state = (AV *)frame->data;
2175 3165
3166 /* if we are about to throw, return early */
3167 /* this does not cancel the aio request, but at least */
3168 /* it quickly returns */
3169 if (CORO_THROW)
3170 return 0;
3171
2176 /* one element that is an RV? repeat! */ 3172 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3173 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1; 3174 return 1;
2179 3175
2180 /* restore status */ 3176 /* restore status */
… …
2250 3246
2251 for (i = 0; i < items; ++i) 3247 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]); 3248 PUSHs (arg [i]);
2253 3249
2254 /* now push the callback closure */ 3250 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3251 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256 3252
2257 /* now call the AIO function - we assume our request is uncancelable */ 3253 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK; 3254 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD); 3255 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 } 3256 }
2261 3257
2262 /* now that the requets is going, we loop toll we have a result */ 3258 /* now that the request is going, we loop till we have a result */
2263 frame->data = (void *)state; 3259 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule; 3260 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req; 3261 frame->check = slf_check_aio_req;
2266} 3262}
2267 3263
… …
2274 3270
2275 XSRETURN_EMPTY; 3271 XSRETURN_EMPTY;
2276} 3272}
2277 3273
2278/*****************************************************************************/ 3274/*****************************************************************************/
3275
3276#if CORO_CLONE
3277# include "clone.c"
3278#endif
3279
3280/*****************************************************************************/
3281
3282static SV *
3283coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3284{
3285 SV *coro_sv;
3286 struct coro *coro;
3287 MAGIC *mg;
3288 HV *hv;
3289 SV *cb;
3290 int i;
3291
3292 if (argc > 0)
3293 {
3294 cb = s_get_cv_croak (argv [0]);
3295
3296 if (!is_coro)
3297 {
3298 if (CvISXSUB (cb))
3299 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3300
3301 if (!CvROOT (cb))
3302 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3303 }
3304 }
3305
3306 Newz (0, coro, 1, struct coro);
3307 coro->args = newAV ();
3308 coro->flags = CF_NEW;
3309
3310 if (coro_first) coro_first->prev = coro;
3311 coro->next = coro_first;
3312 coro_first = coro;
3313
3314 coro->hv = hv = newHV ();
3315 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3316 mg->mg_flags |= MGf_DUP;
3317 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3318
3319 if (argc > 0)
3320 {
3321 av_extend (coro->args, argc + is_coro - 1);
3322
3323 if (is_coro)
3324 {
3325 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3326 cb = (SV *)cv_coro_run;
3327 }
3328
3329 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3330
3331 for (i = 1; i < argc; i++)
3332 av_push (coro->args, newSVsv (argv [i]));
3333 }
3334
3335 return coro_sv;
3336}
2279 3337
2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3338MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2281 3339
2282PROTOTYPES: DISABLE 3340PROTOTYPES: DISABLE
2283 3341
… …
2288 coro_thx = PERL_GET_CONTEXT; 3346 coro_thx = PERL_GET_CONTEXT;
2289# endif 3347# endif
2290#endif 3348#endif
2291 BOOT_PAGESIZE; 3349 BOOT_PAGESIZE;
2292 3350
3351 cctx_current = cctx_new_empty ();
3352
2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3353 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3354 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295 3355
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3356 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3357 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2316 3376
2317 { 3377 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3378 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319 3379
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3380 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf, 3381 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2322 newSVpv ("coro_slf", 0), 0);
2323 3382
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3383 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf, 3384 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2326 newSVpv ("coro schedule like function", 0), 0);
2327 } 3385 }
2328 3386
2329 coroapi.ver = CORO_API_VERSION; 3387 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION; 3388 coroapi.rev = CORO_API_REVISION;
2331 3389
… …
2336 coroapi.prepare_nop = prepare_nop; 3394 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule; 3395 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede; 3396 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself; 3397 coroapi.prepare_cede_notself = prepare_cede_notself;
2340 3398
2341 { 3399 time_init (aTHX);
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343 3400
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
2349
2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3401 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2351} 3402}
2352 3403
2353SV * 3404SV *
2354new (char *klass, ...) 3405new (SV *klass, ...)
3406 ALIAS:
3407 Coro::new = 1
2355 CODE: 3408 CODE:
2356{ 3409 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2357 struct coro *coro; 3410 OUTPUT:
2358 MAGIC *mg;
2359 HV *hv;
2360 int i;
2361
2362 Newz (0, coro, 1, struct coro);
2363 coro->args = newAV ();
2364 coro->flags = CF_NEW;
2365
2366 if (coro_first) coro_first->prev = coro;
2367 coro->next = coro_first;
2368 coro_first = coro;
2369
2370 coro->hv = hv = newHV ();
2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2374
2375 av_extend (coro->args, items - 1);
2376 for (i = 1; i < items; i++)
2377 av_push (coro->args, newSVsv (ST (i)));
2378}
2379 OUTPUT:
2380 RETVAL 3411 RETVAL
2381
2382void
2383_set_stacklevel (...)
2384 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2386 3412
2387void 3413void
2388transfer (...) 3414transfer (...)
2389 PROTOTYPE: $$ 3415 PROTOTYPE: $$
2390 CODE: 3416 CODE:
2391 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3417 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2392 3418
2393bool
2394_destroy (SV *coro_sv)
2395 CODE:
2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2397 OUTPUT:
2398 RETVAL
2399
2400void 3419void
2401_exit (int code) 3420_exit (int code)
2402 PROTOTYPE: $ 3421 PROTOTYPE: $
2403 CODE: 3422 CODE:
2404 _exit (code); 3423 _exit (code);
3424
3425SV *
3426clone (Coro::State coro)
3427 CODE:
3428{
3429#if CORO_CLONE
3430 struct coro *ncoro = coro_clone (aTHX_ coro);
3431 MAGIC *mg;
3432 /* TODO: too much duplication */
3433 ncoro->hv = newHV ();
3434 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3435 mg->mg_flags |= MGf_DUP;
3436 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3437#else
3438 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3439#endif
3440}
3441 OUTPUT:
3442 RETVAL
2405 3443
2406int 3444int
2407cctx_stacksize (int new_stacksize = 0) 3445cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$ 3446 PROTOTYPE: ;$
2409 CODE: 3447 CODE:
… …
2459 eval = 1 3497 eval = 1
2460 CODE: 3498 CODE:
2461{ 3499{
2462 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3500 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2463 { 3501 {
2464 struct coro temp; 3502 struct coro *current = SvSTATE_current;
3503 struct CoroSLF slf_save;
2465 3504
2466 if (!(coro->flags & CF_RUNNING)) 3505 if (current != coro)
2467 { 3506 {
2468 PUTBACK; 3507 PUTBACK;
2469 save_perl (aTHX_ &temp); 3508 save_perl (aTHX_ current);
2470 load_perl (aTHX_ coro); 3509 load_perl (aTHX_ coro);
3510 /* the coro is most likely in an active SLF call.
3511 * while not strictly required (the code we execute is
3512 * not allowed to call any SLF functions), it's cleaner
3513 * to reinitialise the slf_frame and restore it later.
3514 * This might one day allow us to actually do SLF calls
3515 * from code executed here.
3516 */
3517 slf_save = slf_frame;
3518 slf_frame.prepare = 0;
3519 SPAGAIN;
2471 } 3520 }
2472 3521
2473 {
2474 dSP;
2475 ENTER;
2476 SAVETMPS;
2477 PUTBACK;
2478 PUSHSTACK; 3522 PUSHSTACK;
3523
2479 PUSHMARK (SP); 3524 PUSHMARK (SP);
3525 PUTBACK;
2480 3526
2481 if (ix) 3527 if (ix)
2482 eval_sv (coderef, 0); 3528 eval_sv (coderef, 0);
2483 else 3529 else
2484 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3530 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2485 3531
2486 POPSTACK; 3532 POPSTACK;
2487 SPAGAIN; 3533 SPAGAIN;
2488 FREETMPS;
2489 LEAVE;
2490 PUTBACK;
2491 }
2492 3534
2493 if (!(coro->flags & CF_RUNNING)) 3535 if (current != coro)
2494 { 3536 {
3537 PUTBACK;
3538 slf_frame = slf_save;
2495 save_perl (aTHX_ coro); 3539 save_perl (aTHX_ coro);
2496 load_perl (aTHX_ &temp); 3540 load_perl (aTHX_ current);
2497 SPAGAIN; 3541 SPAGAIN;
2498 } 3542 }
2499 } 3543 }
2500} 3544}
2501 3545
… …
2504 PROTOTYPE: $ 3548 PROTOTYPE: $
2505 ALIAS: 3549 ALIAS:
2506 is_ready = CF_READY 3550 is_ready = CF_READY
2507 is_running = CF_RUNNING 3551 is_running = CF_RUNNING
2508 is_new = CF_NEW 3552 is_new = CF_NEW
2509 is_destroyed = CF_DESTROYED 3553 is_destroyed = CF_ZOMBIE
3554 is_zombie = CF_ZOMBIE
3555 is_suspended = CF_SUSPENDED
2510 CODE: 3556 CODE:
2511 RETVAL = boolSV (coro->flags & ix); 3557 RETVAL = boolSV (coro->flags & ix);
2512 OUTPUT: 3558 OUTPUT:
2513 RETVAL 3559 RETVAL
2514 3560
2515void 3561void
2516throw (Coro::State self, SV *throw = &PL_sv_undef) 3562throw (Coro::State self, SV *exception = &PL_sv_undef)
2517 PROTOTYPE: $;$ 3563 PROTOTYPE: $;$
2518 CODE: 3564 CODE:
2519{ 3565{
2520 struct coro *current = SvSTATE_current; 3566 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw; 3567 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2522 SvREFCNT_dec (*throwp); 3568 SvREFCNT_dec (*exceptionp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3569 SvGETMAGIC (exception);
3570 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2524} 3571}
2525 3572
2526void 3573void
2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$ 3575 PROTOTYPE: $;$
… …
2530 3577
2531SV * 3578SV *
2532has_cctx (Coro::State coro) 3579has_cctx (Coro::State coro)
2533 PROTOTYPE: $ 3580 PROTOTYPE: $
2534 CODE: 3581 CODE:
2535 RETVAL = boolSV (!!coro->cctx); 3582 /* maybe manage the running flag differently */
3583 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2536 OUTPUT: 3584 OUTPUT:
2537 RETVAL 3585 RETVAL
2538 3586
2539int 3587int
2540is_traced (Coro::State coro) 3588is_traced (Coro::State coro)
… …
2560 3608
2561void 3609void
2562force_cctx () 3610force_cctx ()
2563 PROTOTYPE: 3611 PROTOTYPE:
2564 CODE: 3612 CODE:
2565 SvSTATE_current->cctx->idle_sp = 0; 3613 cctx_current->idle_sp = 0;
2566 3614
2567void 3615void
2568swap_defsv (Coro::State self) 3616swap_defsv (Coro::State self)
2569 PROTOTYPE: $ 3617 PROTOTYPE: $
2570 ALIAS: 3618 ALIAS:
… …
2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3626 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2579 3627
2580 SV *tmp = *src; *src = *dst; *dst = tmp; 3628 SV *tmp = *src; *src = *dst; *dst = tmp;
2581 } 3629 }
2582 3630
3631void
3632cancel (Coro::State self)
3633 CODE:
3634 coro_state_destroy (aTHX_ self);
3635
3636SV *
3637enable_times (int enabled = enable_times)
3638 CODE:
3639{
3640 RETVAL = boolSV (enable_times);
3641
3642 if (enabled != enable_times)
3643 {
3644 enable_times = enabled;
3645
3646 coro_times_update ();
3647 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3648 }
3649}
3650 OUTPUT:
3651 RETVAL
3652
3653void
3654times (Coro::State self)
3655 PPCODE:
3656{
3657 struct coro *current = SvSTATE (coro_current);
3658
3659 if (expect_false (current == self))
3660 {
3661 coro_times_update ();
3662 coro_times_add (SvSTATE (coro_current));
3663 }
3664
3665 EXTEND (SP, 2);
3666 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3667 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3668
3669 if (expect_false (current == self))
3670 coro_times_sub (SvSTATE (coro_current));
3671}
3672
3673void
3674swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3675 CODE:
3676{
3677 struct coro *current = SvSTATE_current;
3678
3679 if (current == coro)
3680 SWAP_SVS (current);
3681
3682 if (!coro->swap_sv)
3683 coro->swap_sv = newAV ();
3684
3685 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3686 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3687
3688 if (current == coro)
3689 SWAP_SVS (current);
3690}
3691
2583 3692
2584MODULE = Coro::State PACKAGE = Coro 3693MODULE = Coro::State PACKAGE = Coro
2585 3694
2586BOOT: 3695BOOT:
2587{ 3696{
2588 int i;
2589
2590 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2591 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3697 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2592 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3698 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2593 3699 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2594 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3700 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2595 SvREADONLY_on (coro_current); 3701 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3702 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3703 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3704 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2596 3705
3706 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3707 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3708 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3709 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3710
2597 coro_stash = gv_stashpv ("Coro", TRUE); 3711 coro_stash = gv_stashpv ("Coro", TRUE);
2598 3712
2599 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3713 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2600 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3714 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2601 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3715 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2602 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3716 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2603 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3717 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2604 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3718 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2605
2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2607 coro_ready[i] = newAV ();
2608 3719
2609 { 3720 {
2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3721 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2611 3722
2612 coroapi.schedule = api_schedule; 3723 coroapi.schedule = api_schedule;
3724 coroapi.schedule_to = api_schedule_to;
2613 coroapi.cede = api_cede; 3725 coroapi.cede = api_cede;
2614 coroapi.cede_notself = api_cede_notself; 3726 coroapi.cede_notself = api_cede_notself;
2615 coroapi.ready = api_ready; 3727 coroapi.ready = api_ready;
2616 coroapi.is_ready = api_is_ready; 3728 coroapi.is_ready = api_is_ready;
2617 coroapi.nready = coro_nready; 3729 coroapi.nready = coro_nready;
2618 coroapi.current = coro_current; 3730 coroapi.current = coro_current;
2619 3731
2620 GCoroAPI = &coroapi; 3732 /*GCoroAPI = &coroapi;*/
2621 sv_setiv (sv, (IV)&coroapi); 3733 sv_setiv (sv, (IV)&coroapi);
2622 SvREADONLY_on (sv); 3734 SvREADONLY_on (sv);
2623 } 3735 }
2624} 3736}
3737
3738SV *
3739async (...)
3740 PROTOTYPE: &@
3741 CODE:
3742 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3743 api_ready (aTHX_ RETVAL);
3744 OUTPUT:
3745 RETVAL
3746
3747void
3748_destroy (Coro::State coro)
3749 CODE:
3750 /* used by the manager thread */
3751 coro_state_destroy (aTHX_ coro);
3752
3753void
3754on_destroy (Coro::State coro, SV *cb)
3755 CODE:
3756 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3757
3758void
3759join (...)
3760 CODE:
3761 CORO_EXECUTE_SLF_XS (slf_init_join);
3762
3763void
3764terminate (...)
3765 CODE:
3766 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3767
3768void
3769cancel (...)
3770 CODE:
3771 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3772
3773int
3774safe_cancel (Coro::State self, ...)
3775 C_ARGS: aTHX_ self, &ST (1), items - 1
2625 3776
2626void 3777void
2627schedule (...) 3778schedule (...)
2628 CODE: 3779 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3780 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3781
3782void
3783schedule_to (...)
3784 CODE:
3785 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3786
3787void
3788cede_to (...)
3789 CODE:
3790 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2630 3791
2631void 3792void
2632cede (...) 3793cede (...)
2633 CODE: 3794 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede); 3795 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2648void 3809void
2649_set_readyhook (SV *hook) 3810_set_readyhook (SV *hook)
2650 PROTOTYPE: $ 3811 PROTOTYPE: $
2651 CODE: 3812 CODE:
2652 SvREFCNT_dec (coro_readyhook); 3813 SvREFCNT_dec (coro_readyhook);
3814 SvGETMAGIC (hook);
3815 if (SvOK (hook))
3816 {
2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3817 coro_readyhook = newSVsv (hook);
3818 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3819 }
3820 else
3821 {
3822 coro_readyhook = 0;
3823 CORO_READYHOOK = 0;
3824 }
2654 3825
2655int 3826int
2656prio (Coro::State coro, int newprio = 0) 3827prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$ 3828 PROTOTYPE: $;$
2658 ALIAS: 3829 ALIAS:
… …
2664 if (items > 1) 3835 if (items > 1)
2665 { 3836 {
2666 if (ix) 3837 if (ix)
2667 newprio = coro->prio - newprio; 3838 newprio = coro->prio - newprio;
2668 3839
2669 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3840 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2670 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3841 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2671 3842
2672 coro->prio = newprio; 3843 coro->prio = newprio;
2673 } 3844 }
2674} 3845}
2675 OUTPUT: 3846 OUTPUT:
… …
2689 CODE: 3860 CODE:
2690 RETVAL = coro_nready; 3861 RETVAL = coro_nready;
2691 OUTPUT: 3862 OUTPUT:
2692 RETVAL 3863 RETVAL
2693 3864
2694# for async_pool speedup
2695void 3865void
2696_pool_1 (SV *cb) 3866suspend (Coro::State self)
3867 PROTOTYPE: $
2697 CODE: 3868 CODE:
2698{ 3869 self->flags |= CF_SUSPENDED;
2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2701 AV *defav = GvAV (PL_defgv);
2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2703 AV *invoke_av;
2704 int i, len;
2705 3870
2706 if (!invoke) 3871void
3872resume (Coro::State self)
3873 PROTOTYPE: $
3874 CODE:
3875 self->flags &= ~CF_SUSPENDED;
3876
3877void
3878_pool_handler (...)
3879 CODE:
3880 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3881
3882void
3883async_pool (SV *cv, ...)
3884 PROTOTYPE: &@
3885 PPCODE:
3886{
3887 HV *hv = (HV *)av_pop (av_async_pool);
3888 AV *av = newAV ();
3889 SV *cb = ST (0);
3890 int i;
3891
3892 av_extend (av, items - 2);
3893 for (i = 1; i < items; ++i)
3894 av_push (av, SvREFCNT_inc_NN (ST (i)));
3895
3896 if ((SV *)hv == &PL_sv_undef)
2707 { 3897 {
2708 SV *old = PL_diehook; 3898 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2709 PL_diehook = 0; 3899 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2710 SvREFCNT_dec (old); 3900 SvREFCNT_dec (sv);
2711 croak ("\3async_pool terminate\2\n");
2712 } 3901 }
2713 3902
2714 SvREFCNT_dec (coro->saved_deffh);
2715 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2716
2717 hv_store (hv, "desc", sizeof ("desc") - 1,
2718 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2719
2720 invoke_av = (AV *)SvRV (invoke);
2721 len = av_len (invoke_av);
2722
2723 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2724
2725 if (len > 0)
2726 { 3903 {
2727 av_fill (defav, len - 1); 3904 struct coro *coro = SvSTATE_hv (hv);
2728 for (i = 0; i < len; ++i) 3905
2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3906 assert (!coro->invoke_cb);
3907 assert (!coro->invoke_av);
3908 coro->invoke_cb = SvREFCNT_inc (cb);
3909 coro->invoke_av = av;
2730 } 3910 }
3911
3912 api_ready (aTHX_ (SV *)hv);
3913
3914 if (GIMME_V != G_VOID)
3915 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3916 else
3917 SvREFCNT_dec (hv);
2731} 3918}
3919
3920SV *
3921rouse_cb ()
3922 PROTOTYPE:
3923 CODE:
3924 RETVAL = coro_new_rouse_cb (aTHX);
3925 OUTPUT:
3926 RETVAL
2732 3927
2733void 3928void
2734_pool_2 (SV *cb) 3929rouse_wait (...)
3930 PROTOTYPE: ;$
3931 PPCODE:
3932 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3933
3934void
3935on_enter (SV *block)
3936 ALIAS:
3937 on_leave = 1
3938 PROTOTYPE: &
2735 CODE: 3939 CODE:
2736{ 3940{
2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv); 3941 struct coro *coro = SvSTATE_current;
3942 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2739 3943
2740 sv_setsv (cb, &PL_sv_undef); 3944 block = s_get_cv_croak (block);
2741 3945
2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3946 if (!*avp)
2743 coro->saved_deffh = 0; 3947 *avp = newAV ();
2744 3948
2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3949 av_push (*avp, SvREFCNT_inc (block));
2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2747 {
2748 SV *old = PL_diehook;
2749 PL_diehook = 0;
2750 SvREFCNT_dec (old);
2751 croak ("\3async_pool terminate\2\n");
2752 }
2753 3950
2754 av_clear (GvAV (PL_defgv)); 3951 if (!ix)
2755 hv_store (hv, "desc", sizeof ("desc") - 1, 3952 on_enterleave_call (aTHX_ block);
2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2757 3953
2758 coro->prio = 0; 3954 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 3955 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3956 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2761 api_trace (aTHX_ coro_current, 0);
2762
2763 av_push (av_async_pool, newSVsv (coro_current));
2764} 3957}
2765 3958
2766 3959
2767MODULE = Coro::State PACKAGE = PerlIO::cede 3960MODULE = Coro::State PACKAGE = PerlIO::cede
2768 3961
… …
2771 3964
2772 3965
2773MODULE = Coro::State PACKAGE = Coro::Semaphore 3966MODULE = Coro::State PACKAGE = Coro::Semaphore
2774 3967
2775SV * 3968SV *
2776new (SV *klass, SV *count_ = 0) 3969new (SV *klass, SV *count = 0)
2777 CODE: 3970 CODE:
2778{ 3971{
2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3972 int semcnt = 1;
2780 AV *av = newAV (); 3973
2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3974 if (count)
2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3975 {
3976 SvGETMAGIC (count);
3977
3978 if (SvOK (count))
3979 semcnt = SvIV (count);
3980 }
3981
3982 RETVAL = sv_bless (
3983 coro_waitarray_new (aTHX_ semcnt),
3984 GvSTASH (CvGV (cv))
3985 );
2783} 3986}
3987 OUTPUT:
3988 RETVAL
3989
3990# helper for Coro::Channel and others
3991SV *
3992_alloc (int count)
3993 CODE:
3994 RETVAL = coro_waitarray_new (aTHX_ count);
2784 OUTPUT: 3995 OUTPUT:
2785 RETVAL 3996 RETVAL
2786 3997
2787SV * 3998SV *
2788count (SV *self) 3999count (SV *self)
… …
2797 adjust = 1 4008 adjust = 1
2798 CODE: 4009 CODE:
2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4010 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2800 4011
2801void 4012void
2802down (SV *self) 4013down (...)
2803 CODE: 4014 CODE:
2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4015 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4016
4017void
4018wait (...)
4019 CODE:
4020 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2805 4021
2806void 4022void
2807try (SV *self) 4023try (SV *self)
2808 PPCODE: 4024 PPCODE:
2809{ 4025{
… …
2821 XSRETURN_NO; 4037 XSRETURN_NO;
2822} 4038}
2823 4039
2824void 4040void
2825waiters (SV *self) 4041waiters (SV *self)
2826 CODE: 4042 PPCODE:
2827{ 4043{
2828 AV *av = (AV *)SvRV (self); 4044 AV *av = (AV *)SvRV (self);
4045 int wcount = AvFILLp (av) + 1 - 1;
2829 4046
2830 if (GIMME_V == G_SCALAR) 4047 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4048 XPUSHs (sv_2mortal (newSViv (wcount)));
2832 else 4049 else
2833 { 4050 {
2834 int i; 4051 int i;
2835 EXTEND (SP, AvFILLp (av) + 1 - 1); 4052 EXTEND (SP, wcount);
2836 for (i = 1; i <= AvFILLp (av); ++i) 4053 for (i = 1; i <= wcount; ++i)
2837 PUSHs (newSVsv (AvARRAY (av)[i])); 4054 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2838 } 4055 }
2839} 4056}
4057
4058MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4059
4060void
4061_may_delete (SV *sem, int count, int extra_refs)
4062 PPCODE:
4063{
4064 AV *av = (AV *)SvRV (sem);
4065
4066 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4067 && AvFILLp (av) == 0 /* no waiters, just count */
4068 && SvIV (AvARRAY (av)[0]) == count)
4069 XSRETURN_YES;
4070
4071 XSRETURN_NO;
4072}
4073
4074MODULE = Coro::State PACKAGE = Coro::Signal
4075
4076SV *
4077new (SV *klass)
4078 CODE:
4079 RETVAL = sv_bless (
4080 coro_waitarray_new (aTHX_ 0),
4081 GvSTASH (CvGV (cv))
4082 );
4083 OUTPUT:
4084 RETVAL
4085
4086void
4087wait (...)
4088 CODE:
4089 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4090
4091void
4092broadcast (SV *self)
4093 CODE:
4094{
4095 AV *av = (AV *)SvRV (self);
4096 coro_signal_wake (aTHX_ av, AvFILLp (av));
4097}
4098
4099void
4100send (SV *self)
4101 CODE:
4102{
4103 AV *av = (AV *)SvRV (self);
4104
4105 if (AvFILLp (av))
4106 coro_signal_wake (aTHX_ av, 1);
4107 else
4108 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4109}
4110
4111IV
4112awaited (SV *self)
4113 CODE:
4114 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4115 OUTPUT:
4116 RETVAL
2840 4117
2841 4118
2842MODULE = Coro::State PACKAGE = Coro::AnyEvent 4119MODULE = Coro::State PACKAGE = Coro::AnyEvent
2843 4120
2844BOOT: 4121BOOT:
… …
2859 sv_setsv (sv_activity, &PL_sv_undef); 4136 sv_setsv (sv_activity, &PL_sv_undef);
2860 if (coro_nready >= incede) 4137 if (coro_nready >= incede)
2861 { 4138 {
2862 PUSHMARK (SP); 4139 PUSHMARK (SP);
2863 PUTBACK; 4140 PUTBACK;
2864 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4141 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2865 SPAGAIN;
2866 } 4142 }
2867 4143
2868 --incede; 4144 --incede;
2869} 4145}
2870 4146
… …
2873 4149
2874void 4150void
2875_register (char *target, char *proto, SV *req) 4151_register (char *target, char *proto, SV *req)
2876 CODE: 4152 CODE:
2877{ 4153{
2878 HV *st; 4154 SV *req_cv = s_get_cv_croak (req);
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */ 4155 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4156 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto); 4157 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4158 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885} 4159}
2886 4160
4161MODULE = Coro::State PACKAGE = Coro::Select
4162
4163void
4164patch_pp_sselect ()
4165 CODE:
4166 if (!coro_old_pp_sselect)
4167 {
4168 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4169 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4170 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4171 }
4172
4173void
4174unpatch_pp_sselect ()
4175 CODE:
4176 if (coro_old_pp_sselect)
4177 {
4178 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4179 coro_old_pp_sselect = 0;
4180 }
4181

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