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Comparing Coro/Coro/State.xs (file contents):
Revision 1.271 by root, Fri Nov 14 07:35:32 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
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 67#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 68# undef CORO_STACKGUARD
108#endif 69#endif
109 70
110#ifndef CORO_STACKGUARD 71#ifndef CORO_STACKGUARD
… …
117#endif 78#endif
118 79
119/* 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
120 * portable way as possible. */ 81 * portable way as possible. */
121#if __GNUC__ >= 4 82#if __GNUC__ >= 4
83# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 84# define STACKLEVEL __builtin_frame_address (0)
123#else 85#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 86# define dSTACKLEVEL volatile void *stacklevel
87# define STACKLEVEL ((void *)&stacklevel)
125#endif 88#endif
126 89
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 90#define IN_DESTRUCT PL_dirty
128 91
129#if __GNUC__ >= 3 92#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 93# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 94# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 95# define INLINE static inline
133#else 96#else
134# define attribute(x) 97# define attribute(x)
135# define expect(expr,value) (expr) 98# define expect(expr,value) (expr)
136# define INLINE static 99# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 103#define expect_true(expr) expect ((expr) != 0, 1)
141 104
142#define NOINLINE attribute ((noinline)) 105#define NOINLINE attribute ((noinline))
143 106
144#include "CoroAPI.h" 107#include "CoroAPI.h"
108#define GCoroAPI (&coroapi) /* very sneaky */
145 109
146#ifdef USE_ITHREADS 110#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 111# if CORO_PTHREAD
152static void *coro_thx; 112static void *coro_thx;
153# endif 113# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 114#endif
161 115
162# undef LOCK 116#ifdef __linux
163# define LOCK (void)0 117# include <time.h> /* for timespec */
164# undef UNLOCK 118# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 119# ifdef SYS_clock_gettime
166 120# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 121# define CORO_CLOCK_MONOTONIC 1
168struct io_state 122# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 123# endif
170 AV *res; 124#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 125
177static 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);
178 133
179static U32 cctx_gen; 134static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 135static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 136static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 137static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 138static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 139static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 140static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 141
188struct transfer_args 142static AV *av_destroy; /* destruction queue */
189{ 143static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 144static SV *sv_idle; /* $Coro::idle */
191};
192 145
193static GV *irsgv; /* $/ */ 146static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 147static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 148static SV *rv_diehook;
196static SV *rv_warnhook; 149static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 150static HV *hv_sig; /* %SIG */
198 151
199/* async_pool helper stuff */ 152/* async_pool helper stuff */
200static SV *sv_pool_rss; 153static SV *sv_pool_rss;
201static SV *sv_pool_size; 154static SV *sv_pool_size;
155static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 156static AV *av_async_pool; /* idle pool */
157static SV *sv_Coro; /* class string */
158static CV *cv_pool_handler;
203 159
204/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
205static SV *sv_activity; 161static SV *sv_activity;
206 162
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
207static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
209 171
210enum { 172enum
173{
211 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 179 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 180};
218 181
219/* this is a structure representing a c-level coroutine */ 182/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 183typedef struct coro_cctx
184{
221 struct coro_cctx *next; 185 struct coro_cctx *next;
222 186
223 /* the stack */ 187 /* the stack */
224 void *sptr; 188 void *sptr;
225 size_t ssize; 189 size_t ssize;
… …
235 int valgrind_id; 199 int valgrind_id;
236#endif 200#endif
237 unsigned char flags; 201 unsigned char flags;
238} coro_cctx; 202} coro_cctx;
239 203
204static coro_cctx *cctx_current; /* the currently running cctx */
205
206/*****************************************************************************/
207
208static MGVTBL coro_state_vtbl;
209
240enum { 210enum
211{
241 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
244 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) */
245}; 218};
246 219
247/* 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 */
248typedef struct { 221typedef struct
222{
249 SV *defsv; 223 SV *defsv;
250 AV *defav; 224 AV *defav;
251 SV *errsv; 225 SV *errsv;
252 SV *irsgv; 226 SV *irsgv;
227 HV *hinthv;
253#define VAR(name,type) type name; 228#define VAR(name,type) type name;
254# include "state.h" 229# include "state.h"
255#undef VAR 230#undef VAR
256} perl_slots; 231} perl_slots;
257 232
233// how many context stack entries do we need for perl_slots
258#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))
259 235
260/* this is a structure representing a perl-level coroutine */ 236/* this is a structure representing a perl-level coroutine */
261struct coro { 237struct coro
238{
262 /* the c coroutine allocated to this perl coroutine, if any */ 239 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 240 coro_cctx *cctx;
264 241
265 /* process data */ 242 /* ready queue */
243 struct coro *next_ready;
244
245 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 247 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
268 249
250 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
273 254
274 /* statistics */ 255 /* statistics */
275 int usecount; /* number of transfers to this coro */ 256 int usecount; /* number of transfers to this coro */
276 257
277 /* coro process data */ 258 /* coro process data */
278 int prio; 259 int prio;
279 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 */
280 264
281 /* async_pool */ 265 /* async_pool */
282 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;
283 279
284 /* linked list */ 280 /* linked list */
285 struct coro *next, *prev; 281 struct coro *next, *prev;
286}; 282};
287 283
288typedef struct coro *Coro__State; 284typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 285typedef struct coro *Coro__State_or_hashref;
290 286
287/* the following variables are effectively part of the perl context */
288/* and get copied between struct coro and these variables */
289/* the main reason we don't support windows process emulation */
290static struct CoroSLF slf_frame; /* the current slf frame */
291
291/** Coro ********************************************************************/ 292/** Coro ********************************************************************/
292 293
293#define PRIO_MAX 3 294#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 295#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 296#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 297#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 298#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 299#define CORO_PRIO_MIN -4
299 300
300/* for Coro.pm */ 301/* for Coro.pm */
301static SV *coro_current; 302static SV *coro_current;
302static SV *coro_readyhook; 303static SV *coro_readyhook;
303static 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;
304static struct coro *coro_first; 306static struct coro *coro_first;
305#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
306 380
307/** lowlevel stuff **********************************************************/ 381/** lowlevel stuff **********************************************************/
308 382
309static SV * 383static SV *
310coro_get_sv (pTHX_ const char *name, int create) 384coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 408 get_hv (name, create);
335#endif 409#endif
336 return get_hv (name, create); 410 return get_hv (name, create);
337} 411}
338 412
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
339static AV * 518static AV *
340coro_clone_padlist (pTHX_ CV *cv) 519coro_derive_padlist (pTHX_ CV *cv)
341{ 520{
342 AV *padlist = CvPADLIST (cv); 521 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 522 AV *newpadlist, *newpad;
344 523
345 newpadlist = newAV (); 524 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 529 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 530#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 531 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 532 --AvFILLp (padlist);
354 533
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 534 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 535 av_store (newpadlist, 1, (SV *)newpad);
357 536
358 return newpadlist; 537 return newpadlist;
359} 538}
360 539
361static void 540static void
362free_padlist (pTHX_ AV *padlist) 541free_padlist (pTHX_ AV *padlist)
363{ 542{
364 /* may be during global destruction */ 543 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 544 if (!IN_DESTRUCT)
366 { 545 {
367 I32 i = AvFILLp (padlist); 546 I32 i = AvFILLp (padlist);
368 while (i >= 0) 547
548 while (i > 0) /* special-case index 0 */
369 { 549 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 550 /* we try to be extra-careful here */
371 if (svp) 551 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 552 I32 j = AvFILLp (av);
373 SV *sv; 553
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 554 while (j >= 0)
555 SvREFCNT_dec (AvARRAY (av)[j--]);
556
557 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 558 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 559 }
380 560
561 SvREFCNT_dec (AvARRAY (padlist)[0]);
562
563 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 564 SvREFCNT_dec ((SV*)padlist);
382 } 565 }
383} 566}
384 567
385static int 568static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 569coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 570{
388 AV *padlist; 571 AV *padlist;
389 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;
390 577
391 /* casting is fun. */ 578 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 579 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 580 free_padlist (aTHX_ padlist);
394 581
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 582 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 583
397 return 0; 584 return 0;
398} 585}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 586
403static MGVTBL coro_cv_vtbl = { 587static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 588 0, 0, 0, 0,
405 coro_cv_free 589 coro_cv_free
406}; 590};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 591
444/* the next two functions merely cache the padlists */ 592/* the next two functions merely cache the padlists */
445static void 593static void
446get_padlist (pTHX_ CV *cv) 594get_padlist (pTHX_ CV *cv)
447{ 595{
… …
453 else 601 else
454 { 602 {
455#if CORO_PREFER_PERL_FUNCTIONS 603#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 604 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 605 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 606 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 607 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 608 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 609 SvREFCNT_dec (cp);
462#else 610#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 611 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 612#endif
465 } 613 }
466} 614}
467 615
468static void 616static void
… …
475 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);
476 624
477 av = (AV *)mg->mg_obj; 625 av = (AV *)mg->mg_obj;
478 626
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 627 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 628 av_extend (av, AvFILLp (av) + 1);
481 629
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 630 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 631}
484 632
485/** 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);
486 688
487static void 689static void
488load_perl (pTHX_ Coro__State c) 690load_perl (pTHX_ Coro__State c)
489{ 691{
490 perl_slots *slot = c->slot; 692 perl_slots *slot = c->slot;
491 c->slot = 0; 693 c->slot = 0;
492 694
493 PL_mainstack = c->mainstack; 695 PL_mainstack = c->mainstack;
494 696
495 GvSV (PL_defgv) = slot->defsv; 697 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 698 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 699 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 700 GvSV (irsgv) = slot->irsgv;
701 GvHV (PL_hintgv) = slot->hinthv;
499 702
500 #define VAR(name,type) PL_ ## name = slot->name; 703 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 704 # include "state.h"
502 #undef VAR 705 #undef VAR
503 706
… …
514 CvPADLIST (cv) = (AV *)POPs; 717 CvPADLIST (cv) = (AV *)POPs;
515 } 718 }
516 719
517 PUTBACK; 720 PUTBACK;
518 } 721 }
722
723 slf_frame = c->slf_frame;
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);
519} 743}
520 744
521static void 745static void
522save_perl (pTHX_ Coro__State c) 746save_perl (pTHX_ Coro__State c)
523{ 747{
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;
767 c->slf_frame = slf_frame;
768
524 { 769 {
525 dSP; 770 dSP;
526 I32 cxix = cxstack_ix; 771 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 772 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 773 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 783 {
539 while (expect_true (cxix >= 0)) 784 while (expect_true (cxix >= 0))
540 { 785 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 786 PERL_CONTEXT *cx = &ccstk[cxix--];
542 787
543 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))
544 { 789 {
545 CV *cv = cx->blk_sub.cv; 790 CV *cv = cx->blk_sub.cv;
546 791
547 if (expect_true (CvDEPTH (cv))) 792 if (expect_true (CvDEPTH (cv)))
548 { 793 {
… …
567 812
568 PUTBACK; 813 PUTBACK;
569 } 814 }
570 815
571 /* allocate some space on the context stack for our purposes */ 816 /* allocate some space on the context stack for our purposes */
572 /* we manually unroll here, as usually 2 slots is enough */ 817 if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
573 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC;
576 { 818 {
577 int i; 819 unsigned int i;
820
578 for (i = 3; i < SLOT_COUNT; ++i) 821 for (i = 0; i < SLOT_COUNT; ++i)
579 CXINC; 822 CXINC;
580 } 823
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 824 cxstack_ix -= SLOT_COUNT; /* undo allocation */
825 }
582 826
583 c->mainstack = PL_mainstack; 827 c->mainstack = PL_mainstack;
584 828
585 { 829 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 830 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 831
588 slot->defav = GvAV (PL_defgv); 832 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 833 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 834 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 835 slot->irsgv = GvSV (irsgv);
836 slot->hinthv = GvHV (PL_hintgv);
592 837
593 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 839 # include "state.h"
595 #undef VAR 840 #undef VAR
596 } 841 }
597} 842}
598 843
599/* 844/*
600 * allocate various perl stacks. This is an exact copy 845 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 846 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 847 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 848 * not usually need a lot of stackspace.
604 */ 849 */
605#if CORO_PREFER_PERL_FUNCTIONS 850#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 851# define coro_init_stacks(thx) init_stacks ()
607#else 852#else
608static void 853static void
609coro_init_stacks (pTHX) 854coro_init_stacks (pTHX)
610{ 855{
611 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() */
612 PL_curstackinfo->si_type = PERLSI_MAIN; 857 PL_curstackinfo->si_type = PERLSI_MAIN;
613 PL_curstack = PL_curstackinfo->si_stack; 858 PL_curstack = PL_curstackinfo->si_stack;
614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 859 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
615 860
616 PL_stack_base = AvARRAY(PL_curstack); 861 PL_stack_base = AvARRAY(PL_curstack);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 919#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 920 Safefree (PL_retstack);
676#endif 921#endif
677} 922}
678 923
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
679static size_t 933static size_t
680coro_rss (pTHX_ struct coro *coro) 934coro_rss (pTHX_ struct coro *coro)
681{ 935{
682 size_t rss = sizeof (*coro); 936 size_t rss = sizeof (*coro);
683 937
684 if (coro->mainstack) 938 if (coro->mainstack)
685 { 939 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 940 if (coro->flags & CF_RUNNING)
690 { 941 {
691 slot = &tmp_slot; 942 #define SYM(sym) PL_ ## sym
692 943 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 944 #undef SYM
696 } 945 }
697 else 946 else
698 slot = coro->slot;
699
700 if (slot)
701 { 947 {
702 rss += sizeof (slot->curstackinfo); 948 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 949 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 950 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 951 }
714 } 952 }
715 953
716 return rss; 954 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 955}
745 956
746/** coroutine stack handling ************************************************/ 957/** coroutine stack handling ************************************************/
747 958
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 959static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 968#endif
758 969
759/* 970/*
760 * This overrides the default magic get method of %SIG elements. 971 * This overrides the default magic get method of %SIG elements.
761 * 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
762 * 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),
763 * readback here. 974 * we just provide our own readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 975 */
768static int 976static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 977coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 978{
771 const char *s = MgPV_nolen_const (mg); 979 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1032 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 1033
826 if (svp) 1034 if (svp)
827 { 1035 {
828 SV *old = *svp; 1036 SV *old = *svp;
829 *svp = newSVsv (sv); 1037 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 1038 SvREFCNT_dec (old);
831 return 0; 1039 return 0;
832 } 1040 }
833 } 1041 }
834 1042
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1043 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 1044}
837 1045
838static void 1046static void
1047prepare_nop (pTHX_ struct coro_transfer_args *ta)
1048{
1049 /* kind of mega-hacky, but works */
1050 ta->next = ta->prev = (struct coro *)ta;
1051}
1052
1053static int
1054slf_check_nop (pTHX_ struct CoroSLF *frame)
1055{
1056 return 0;
1057}
1058
1059static int
1060slf_check_repeat (pTHX_ struct CoroSLF *frame)
1061{
1062 return 1;
1063}
1064
1065static UNOP init_perl_op;
1066
1067static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1068init_perl (pTHX_ struct coro *coro)
840{ 1069{
841 /* 1070 /*
842 * emulate part of the perl startup here. 1071 * emulate part of the perl startup here.
843 */ 1072 */
844 coro_init_stacks (aTHX); 1073 coro_init_stacks (aTHX);
845 1074
846 PL_runops = RUNOPS_DEFAULT; 1075 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1076 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1077 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1078 PL_comppad = 0;
1079 PL_comppad_name = 0;
1080 PL_comppad_name_fill = 0;
1081 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1082 PL_curpm = 0;
851 PL_curpad = 0; 1083 PL_curpad = 0;
852 PL_localizing = 0; 1084 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1085 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1086#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1087 PL_parser = 0;
857#endif 1088#endif
1089 PL_hints = 0;
858 1090
859 /* recreate the die/warn hooks */ 1091 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1092 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1093 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1094
863 GvSV (PL_defgv) = newSV (0); 1095 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1096 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1097 GvSV (PL_errgv) = newSV (0);
866 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;
867 PL_rs = newSVsv (GvSV (irsgv)); 1100 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1101 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1102
870 { 1103 {
871 dSP; 1104 dSP;
872 UNOP myop; 1105 UNOP myop;
873 1106
874 Zero (&myop, 1, UNOP); 1107 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 1108 myop.op_next = Nullop;
1109 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 1110 myop.op_flags = OPf_WANT_VOID;
877 1111
878 PUSHMARK (SP); 1112 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1113 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 1114 PUTBACK;
881 PL_op = (OP *)&myop; 1115 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1116 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 1117 }
885 1118
886 /* 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
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1120 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 1121 */
890 SLF_HEAD; 1122 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 1123 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1124 slf_frame.destroy = 0;
892 1125
1126 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
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 */
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
893static void 1146static void
894coro_destruct (pTHX_ struct coro *coro) 1147coro_unwind_stacks (pTHX)
895{ 1148{
896 if (!IN_DESTRUCT) 1149 if (!IN_DESTRUCT)
897 { 1150 {
898 /* restore all saved variables and stuff */ 1151 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1152 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1160 POPSTACK_TO (PL_mainstack);
908 1161
909 /* unwind main stack */ 1162 /* unwind main stack */
910 dounwind (-1); 1163 dounwind (-1);
911 } 1164 }
1165}
912 1166
913 SvREFCNT_dec (GvSV (PL_defgv)); 1167static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1168destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1169{
916 SvREFCNT_dec (PL_defoutgv); 1170 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1171
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 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
923 SvREFCNT_dec (coro->saved_deffh); 1215 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1216 SvREFCNT_dec (coro->rouse_cb);
925 1217 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1218 SvREFCNT_dec (coro->invoke_av);
1219 }
927} 1220}
928 1221
929INLINE void 1222INLINE void
930free_coro_mortal (pTHX) 1223free_coro_mortal (pTHX)
931{ 1224{
932 if (expect_true (coro_mortal)) 1225 if (expect_true (coro_mortal))
933 { 1226 {
934 SvREFCNT_dec (coro_mortal); 1227 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1228 coro_mortal = 0;
936 } 1229 }
937} 1230}
938 1231
939static int 1232static int
940runops_trace (pTHX) 1233runops_trace (pTHX)
941{ 1234{
942 COP *oldcop = 0; 1235 COP *oldcop = 0;
943 int oldcxix = -2; 1236 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1237
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1238 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1239 {
949 PERL_ASYNC_CHECK (); 1240 PERL_ASYNC_CHECK ();
950 1241
951 if (cctx->flags & CC_TRACE_ALL) 1242 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1243 {
953 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)
954 { 1245 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1246 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1247 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1248 AV *av = newAV (); /* return values */
958 SV **cb; 1249 SV **cb;
… …
995 1286
996 if (PL_curcop != &PL_compiling) 1287 if (PL_curcop != &PL_compiling)
997 { 1288 {
998 SV **cb; 1289 SV **cb;
999 1290
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1291 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1292 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1293 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1294
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1295 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1296 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1297 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1298 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1299 SV *fullname = sv_2mortal (newSV (0));
1010 1300
1011 if (isGV (gv)) 1301 if (isGV (gv))
… …
1016 SAVETMPS; 1306 SAVETMPS;
1017 EXTEND (SP, 3); 1307 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1308 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1309 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1310 PUSHs (fullname);
1021 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);
1022 PUTBACK; 1312 PUTBACK;
1023 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);
1024 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);
1025 SPAGAIN; 1315 SPAGAIN;
1026 FREETMPS; 1316 FREETMPS;
… …
1029 } 1319 }
1030 1320
1031 oldcxix = cxstack_ix; 1321 oldcxix = cxstack_ix;
1032 } 1322 }
1033 1323
1034 if (cctx->flags & CC_TRACE_LINE) 1324 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1325 {
1036 dSP; 1326 dSP;
1037 1327
1038 PL_runops = RUNOPS_DEFAULT; 1328 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1329 ENTER;
… …
1058 1348
1059 TAINT_NOT; 1349 TAINT_NOT;
1060 return 0; 1350 return 0;
1061} 1351}
1062 1352
1353static struct CoroSLF cctx_ssl_frame;
1354
1063static void 1355static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1356slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1357{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1358 ta->prev = 0;
1068} 1359}
1069 1360
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1361static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1362slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1363{
1073/* 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 */
1074static void NOINLINE 1370static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1371cctx_prepare (pTHX)
1076{ 1372{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1373 PL_top_env = &PL_start_env;
1081 1374
1082 if (cctx->flags & CC_TRACE) 1375 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1376 PL_runops = runops_trace;
1084 1377
1085 Zero (&myop, 1, UNOP); 1378 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1379 * that can lead to creation of a new cctx */
1087 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));
1088 1382
1089 PUSHMARK (SP); 1383 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1384 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1385
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1386 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1387 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1388}
1098 1389
1099/* 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 */
1100INLINE void 1391INLINE void
1101transfer_tail (pTHX) 1392transfer_tail (pTHX)
1102{ 1393{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1394 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1395}
1119 1396
1120/* 1397/*
1121 * this is a _very_ stripped down perl interpreter ;) 1398 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1399 */
… …
1129# endif 1406# endif
1130#endif 1407#endif
1131 { 1408 {
1132 dTHX; 1409 dTHX;
1133 1410
1134 /* we are the alternative tail to pp_set_stacklevel */ 1411 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1412 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1413 /* PL_nop = PL_nop->op_next */
1140 1414
1141 /* inject a fake subroutine call to cctx_init */ 1415 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1416 cctx_prepare (aTHX);
1143 1417
1144 /* cctx_run is the alternative tail of transfer() */ 1418 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1419 transfer_tail (aTHX);
1146 1420
1147 /* 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 */
1148 PL_restartop = PL_op; 1422 PL_restartop = PL_op;
1149 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 */
1150 1429
1151 /* 1430 /*
1152 * 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
1153 * 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)
1154 * 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
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1434 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * 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.
1157 */ 1438 */
1158 PL_top_env = main_top_env; 1439 PL_top_env = main_top_env;
1159 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 */
1160 } 1441 }
1161} 1442}
… …
1238cctx_destroy (coro_cctx *cctx) 1519cctx_destroy (coro_cctx *cctx)
1239{ 1520{
1240 if (!cctx) 1521 if (!cctx)
1241 return; 1522 return;
1242 1523
1524 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1525
1243 --cctx_count; 1526 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1527 coro_destroy (&cctx->cctx);
1245 1528
1246 /* coro_transfer creates new, empty cctx's */ 1529 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1530 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1588/** coroutine switching *****************************************************/
1306 1589
1307static void 1590static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1591transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1592{
1593 /* TODO: throwing up here is considered harmful */
1594
1310 if (expect_true (prev != next)) 1595 if (expect_true (prev != next))
1311 { 1596 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1597 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1598 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1599
1315 if (expect_false (next->flags & CF_RUNNING)) 1600 if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED))
1319 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,");
1320 1602
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1603#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1604 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1605 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1606#endif
1325 } 1607 }
1326} 1608}
1327 1609
1328/* always use the TRANSFER macro */ 1610/* always use the TRANSFER macro */
1329static void NOINLINE 1611static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1612transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1613{
1332 dSTACKLEVEL; 1614 dSTACKLEVEL;
1333 1615
1334 /* sometimes transfer is only called to set idle_sp */ 1616 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1617 if (expect_false (!prev))
1336 { 1618 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1619 cctx_current->idle_sp = STACKLEVEL;
1338 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 */
1339 } 1621 }
1340 else if (expect_true (prev != next)) 1622 else if (expect_true (prev != next))
1341 { 1623 {
1342 coro_cctx *prev__cctx; 1624 coro_cctx *cctx_prev;
1343 1625
1344 if (expect_false (prev->flags & CF_NEW)) 1626 if (expect_false (prev->flags & CF_NEW))
1345 { 1627 {
1346 /* create a new empty/source context */ 1628 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1629 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1630 prev->flags |= CF_RUNNING;
1350 } 1631 }
1351 1632
1352 prev->flags &= ~CF_RUNNING; 1633 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1634 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1635
1357 /* first get rid of the old state */ 1636 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1637 save_perl (aTHX_ prev);
1359 1638
1360 if (expect_false (next->flags & CF_NEW)) 1639 if (expect_false (next->flags & CF_NEW))
1361 { 1640 {
1362 /* need to start coroutine */ 1641 /* need to start coroutine */
1363 next->flags &= ~CF_NEW; 1642 next->flags &= ~CF_NEW;
1364 /* setup coroutine call */ 1643 /* setup coroutine call */
1365 coro_setup (aTHX_ next); 1644 init_perl (aTHX_ next);
1366 } 1645 }
1367 else 1646 else
1368 load_perl (aTHX_ next); 1647 load_perl (aTHX_ next);
1369 1648
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1649 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1650 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1651 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1652 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1653 && !force_cctx
1377 )) 1654 ))
1378 { 1655 {
1379 /* 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 */
1380 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));
1381 1658
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1659 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1660 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1661 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1662 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1663 next->cctx = cctx_get (aTHX);
1389 1664
1390 cctx_put (prev__cctx); 1665 cctx_put (cctx_current);
1391 } 1666 }
1667 else
1668 prev->cctx = cctx_current;
1392 1669
1393 ++next->usecount; 1670 ++next->usecount;
1394 1671
1395 if (expect_true (!next->cctx)) 1672 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1673 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1674
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1675 next->cctx = 0;
1399 transfer_next = next;
1400 1676
1401 if (expect_false (prev__cctx != next->cctx)) 1677 if (expect_false (cctx_prev != cctx_current))
1402 { 1678 {
1403 prev__cctx->top_env = PL_top_env; 1679 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1680 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1681 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1682 }
1407 1683
1408 transfer_tail (aTHX); 1684 transfer_tail (aTHX);
1409 } 1685 }
1410} 1686}
… …
1412#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))
1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1689#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414 1690
1415/** high level stuff ********************************************************/ 1691/** high level stuff ********************************************************/
1416 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 */
1417static int 1695static void
1696coro_call_on_destroy (pTHX_ struct coro *coro);
1697
1698static void
1418coro_state_destroy (pTHX_ struct coro *coro) 1699coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1700{
1420 if (coro->flags & CF_DESTROYED) 1701 if (coro->flags & CF_ZOMBIE)
1421 return 0; 1702 return;
1422 1703
1704 slf_destroy (aTHX_ coro);
1705
1423 coro->flags |= CF_DESTROYED; 1706 coro->flags |= CF_ZOMBIE;
1424 1707
1425 if (coro->flags & CF_READY) 1708 if (coro->flags & CF_READY)
1426 { 1709 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1710 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1711 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1712 --coro_nready;
1431 UNLOCK;
1432 } 1713 }
1433 else 1714 else
1434 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 */
1435
1436 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 {
1438 struct coro temp;
1439
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452
1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->args);
1455 1716
1456 if (coro->next) coro->next->prev = coro->prev; 1717 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1718 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1719 if (coro == coro_first) coro_first = coro->next;
1459 1720
1460 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 */
1461} 1736}
1462 1737
1463static int 1738static int
1464coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1739coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1465{ 1740{
1466 struct coro *coro = (struct coro *)mg->mg_ptr; 1741 struct coro *coro = (struct coro *)mg->mg_ptr;
1467 mg->mg_ptr = 0; 1742 mg->mg_ptr = 0;
1468 1743
1469 coro->hv = 0;
1470
1471 if (--coro->refcnt < 0)
1472 {
1473 coro_state_destroy (aTHX_ coro); 1744 coro_state_destroy (aTHX_ coro);
1745 SvREFCNT_dec (coro->on_destroy);
1746 SvREFCNT_dec (coro->status);
1747
1474 Safefree (coro); 1748 Safefree (coro);
1475 }
1476 1749
1477 return 0; 1750 return 0;
1478} 1751}
1479 1752
1480static int 1753static int
1481coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1754coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1482{ 1755{
1483 struct coro *coro = (struct coro *)mg->mg_ptr; 1756 /* called when perl clones the current process the slow way (windows process emulation) */
1484 1757 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1485 ++coro->refcnt; 1758 mg->mg_ptr = 0;
1759 mg->mg_virtual = 0;
1486 1760
1487 return 0; 1761 return 0;
1488} 1762}
1489 1763
1490static MGVTBL coro_state_vtbl = { 1764static MGVTBL coro_state_vtbl = {
… …
1497# define MGf_DUP 0 1771# define MGf_DUP 0
1498#endif 1772#endif
1499}; 1773};
1500 1774
1501static void 1775static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1776prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1777{
1504 ta->prev = SvSTATE (prev_sv); 1778 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1779 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1780 TRANSFER_CHECK (*ta);
1507} 1781}
1508 1782
1509static void 1783static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1784api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1785{
1512 struct transfer_args ta; 1786 struct coro_transfer_args ta;
1513 1787
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1788 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1789 TRANSFER (ta, 1);
1516} 1790}
1517 1791
1518/** Coro ********************************************************************/ 1792/** Coro ********************************************************************/
1519 1793
1520static void 1794INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1795coro_enq (pTHX_ struct coro *coro)
1522{ 1796{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1797 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1798
1526static 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 *
1527coro_deq (pTHX) 1807coro_deq (pTHX)
1528{ 1808{
1529 int prio; 1809 int prio;
1530 1810
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1811 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1812 {
1533 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 }
1534 1822
1535 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;
1536} 1841}
1537 1842
1538static int 1843static int
1539api_ready (pTHX_ SV *coro_sv) 1844api_ready (pTHX_ SV *coro_sv)
1540{ 1845{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1846 struct coro *coro = SvSTATE (coro_sv);
1549 1847
1550 if (coro->flags & CF_READY) 1848 if (coro->flags & CF_READY)
1551 return 0; 1849 return 0;
1552 1850
1553 coro->flags |= CF_READY; 1851 coro->flags |= CF_READY;
1554 1852
1555 LOCK; 1853 coro_enq (aTHX_ coro);
1556 1854
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1855 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1856 if (coroapi.readyhook)
1559 1857 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1858
1584 return 1; 1859 return 1;
1585} 1860}
1586 1861
1587static int 1862static int
1588api_is_ready (pTHX_ SV *coro_sv) 1863api_is_ready (pTHX_ SV *coro_sv)
1589{ 1864{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1865 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1866}
1592 1867
1868/* expects to own a reference to next->hv */
1593INLINE void 1869INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1870prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1871{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1872 SV *prev_sv = SvRV (coro_current);
1873
1640 ta->prev = SvSTATE (prev_sv); 1874 ta->prev = SvSTATE_hv (prev_sv);
1875 ta->next = next;
1876
1641 TRANSFER_CHECK (*ta); 1877 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1878
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1879 SvRV_set (coro_current, (SV *)next->hv);
1645 1880
1646 LOCK;
1647 free_coro_mortal (aTHX); 1881 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1882 coro_mortal = prev_sv;
1649 UNLOCK; 1883}
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 }
1650} 1936}
1651 1937
1652INLINE void 1938INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1939prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1940{
1655 api_ready (aTHX_ coro_current); 1941 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1942 prepare_schedule (aTHX_ ta);
1657} 1943}
1658 1944
1659static void 1945INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1946prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1947{
1662 SV *prev = SvRV (coro_current); 1948 SV *prev = SvRV (coro_current);
1663 1949
1664 if (coro_nready) 1950 if (coro_nready)
1665 { 1951 {
1666 prepare_schedule (aTHX_ ta); 1952 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1953 api_ready (aTHX_ prev);
1668 } 1954 }
1669 else 1955 else
1670 ta->prev = ta->next = SvSTATE (prev); 1956 prepare_nop (aTHX_ ta);
1671} 1957}
1672 1958
1673static void 1959static void
1674api_schedule (pTHX) 1960api_schedule (pTHX)
1675{ 1961{
1676 struct transfer_args ta; 1962 struct coro_transfer_args ta;
1677 1963
1678 prepare_schedule (aTHX_ &ta); 1964 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1965 TRANSFER (ta, 1);
1680} 1966}
1681 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);
1976}
1977
1682static int 1978static int
1683api_cede (pTHX) 1979api_cede (pTHX)
1684{ 1980{
1685 struct transfer_args ta; 1981 struct coro_transfer_args ta;
1686 1982
1687 prepare_cede (aTHX_ &ta); 1983 prepare_cede (aTHX_ &ta);
1688 1984
1689 if (expect_true (ta.prev != ta.next)) 1985 if (expect_true (ta.prev != ta.next))
1690 { 1986 {
… …
1698static int 1994static int
1699api_cede_notself (pTHX) 1995api_cede_notself (pTHX)
1700{ 1996{
1701 if (coro_nready) 1997 if (coro_nready)
1702 { 1998 {
1703 struct transfer_args ta; 1999 struct coro_transfer_args ta;
1704 2000
1705 prepare_cede_notself (aTHX_ &ta); 2001 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 2002 TRANSFER (ta, 1);
1707 return 1; 2003 return 1;
1708 } 2004 }
… …
1713static void 2009static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 2010api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 2011{
1716 struct coro *coro = SvSTATE (coro_sv); 2012 struct coro *coro = SvSTATE (coro_sv);
1717 2013
2014 if (coro->flags & CF_RUNNING)
2015 croak ("cannot enable tracing on a running coroutine, caught");
2016
1718 if (flags & CC_TRACE) 2017 if (flags & CC_TRACE)
1719 { 2018 {
1720 if (!coro->cctx) 2019 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 2020 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 2021 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 2022 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 2023
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2024 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 2025 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2026 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 2027 {
… …
1733 else 2032 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 2033 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 2034 }
1736} 2035}
1737 2036
1738#if 0 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
1739static int 2074static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2075slf_check_join (pTHX_ struct CoroSLF *frame)
1741{ 2076{
1742 AV *padlist; 2077 struct coro *coro = (struct coro *)frame->data;
1743 AV *av = (AV *)mg->mg_obj;
1744 2078
1745 abort (); 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);
1746 2087
1747 return 0; 2088 return 0;
1748} 2089}
1749 2090
1750static MGVTBL coro_gensub_vtbl = { 2091static void
1751 0, 0, 0, 0, 2092slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2093{
1753}; 2094 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1754#endif 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;
2471}
2472
2473/*****************************************************************************/
2474/* schedule-like-function opcode (SLF) */
2475
2476static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2477static const CV *slf_cv;
2478static SV **slf_argv;
2479static int slf_argc, slf_arga; /* count, allocated */
2480static I32 slf_ax; /* top of stack, for restore */
2481
2482/* this restores the stack in the case we patched the entersub, to */
2483/* recreate the stack frame as perl will on following calls */
2484/* since entersub cleared the stack */
2485static OP *
2486pp_restore (pTHX)
2487{
2488 int i;
2489 SV **SP = PL_stack_base + slf_ax;
2490
2491 PUSHMARK (SP);
2492
2493 EXTEND (SP, slf_argc + 1);
2494
2495 for (i = 0; i < slf_argc; ++i)
2496 PUSHs (sv_2mortal (slf_argv [i]));
2497
2498 PUSHs ((SV *)CvGV (slf_cv));
2499
2500 RETURNOP (slf_restore.op_first);
2501}
2502
2503static void
2504slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2505{
2506 SV **arg = (SV **)slf_frame.data;
2507
2508 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2509}
2510
2511static void
2512slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2513{
2514 if (items != 2)
2515 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2516
2517 frame->prepare = slf_prepare_transfer;
2518 frame->check = slf_check_nop;
2519 frame->data = (void *)arg; /* let's hope it will stay valid */
2520}
2521
2522static void
2523slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2524{
2525 frame->prepare = prepare_schedule;
2526 frame->check = slf_check_nop;
2527}
2528
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
2558slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2559{
2560 frame->prepare = prepare_cede;
2561 frame->check = slf_check_nop;
2562}
2563
2564static void
2565slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 frame->prepare = prepare_cede_notself;
2568 frame->check = slf_check_nop;
2569}
2570
2571/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
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}
2587
2588/*
2589 * these not obviously related functions are all rolled into one
2590 * function to increase chances that they all will call transfer with the same
2591 * stack offset
2592 * SLF stands for "schedule-like-function".
2593 */
2594static OP *
2595pp_slf (pTHX)
2596{
2597 I32 checkmark; /* mark SP to see how many elements check has pushed */
2598
2599 /* set up the slf frame, unless it has already been set-up */
2600 /* the latter happens when a new coro has been started */
2601 /* or when a new cctx was attached to an existing coroutine */
2602 if (expect_true (!slf_frame.prepare))
2603 {
2604 /* first iteration */
2605 dSP;
2606 SV **arg = PL_stack_base + TOPMARK + 1;
2607 int items = SP - arg; /* args without function object */
2608 SV *gv = *sp;
2609
2610 /* do a quick consistency check on the "function" object, and if it isn't */
2611 /* for us, divert to the real entersub */
2612 if (SvTYPE (gv) != SVt_PVGV
2613 || !GvCV (gv)
2614 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2615 return PL_ppaddr[OP_ENTERSUB](aTHX);
2616
2617 if (!(PL_op->op_flags & OPf_STACKED))
2618 {
2619 /* ampersand-form of call, use @_ instead of stack */
2620 AV *av = GvAV (PL_defgv);
2621 arg = AvARRAY (av);
2622 items = AvFILLp (av) + 1;
2623 }
2624
2625 /* now call the init function, which needs to set up slf_frame */
2626 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2627 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2628
2629 /* pop args */
2630 SP = PL_stack_base + POPMARK;
2631
2632 PUTBACK;
2633 }
2634
2635 /* now that we have a slf_frame, interpret it! */
2636 /* we use a callback system not to make the code needlessly */
2637 /* complicated, but so we can run multiple perl coros from one cctx */
2638
2639 do
2640 {
2641 struct coro_transfer_args ta;
2642
2643 slf_frame.prepare (aTHX_ &ta);
2644 TRANSFER (ta, 0);
2645
2646 checkmark = PL_stack_sp - PL_stack_base;
2647 }
2648 while (slf_frame.check (aTHX_ &slf_frame));
2649
2650 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2651
2652 /* exception handling */
2653 if (expect_false (CORO_THROW))
2654 {
2655 SV *exception = sv_2mortal (CORO_THROW);
2656
2657 CORO_THROW = 0;
2658 sv_setsv (ERRSV, exception);
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;
2678 }
2679
2680 return NORMAL;
2681}
2682
2683static void
2684api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2685{
2686 int i;
2687 SV **arg = PL_stack_base + ax;
2688 int items = PL_stack_sp - arg + 1;
2689
2690 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2691
2692 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2693 && PL_op->op_ppaddr != pp_slf)
2694 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2695
2696 CvFLAGS (cv) |= CVf_SLF;
2697 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2698 slf_cv = cv;
2699
2700 /* we patch the op, and then re-run the whole call */
2701 /* we have to put the same argument on the stack for this to work */
2702 /* and this will be done by pp_restore */
2703 slf_restore.op_next = (OP *)&slf_restore;
2704 slf_restore.op_type = OP_CUSTOM;
2705 slf_restore.op_ppaddr = pp_restore;
2706 slf_restore.op_first = PL_op;
2707
2708 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2709
2710 if (PL_op->op_flags & OPf_STACKED)
2711 {
2712 if (items > slf_arga)
2713 {
2714 slf_arga = items;
2715 Safefree (slf_argv);
2716 New (0, slf_argv, slf_arga, SV *);
2717 }
2718
2719 slf_argc = items;
2720
2721 for (i = 0; i < items; ++i)
2722 slf_argv [i] = SvREFCNT_inc (arg [i]);
2723 }
2724 else
2725 slf_argc = 0;
2726
2727 PL_op->op_ppaddr = pp_slf;
2728 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2729
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));
2778}
1755 2779
1756/*****************************************************************************/ 2780/*****************************************************************************/
1757/* PerlIO::cede */ 2781/* PerlIO::cede */
1758 2782
1759typedef struct 2783typedef struct
… …
1827 PerlIOBuf_get_cnt, 2851 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2852 PerlIOBuf_set_ptrcnt,
1829}; 2853};
1830 2854
1831/*****************************************************************************/ 2855/*****************************************************************************/
2856/* Coro::Semaphore & Coro::Signal */
1832 2857
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2858static SV *
1843pp_restore (pTHX) 2859coro_waitarray_new (pTHX_ int count)
1844{ 2860{
1845 dSP; 2861 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2862 AV *av = newAV ();
2863 SV **ary;
1846 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
2882/* semaphore */
2883
2884static void
2885coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2886{
2887 SV *count_sv = AvARRAY (av)[0];
2888 IV count = SvIVX (count_sv);
2889
2890 count += adjust;
2891 SvIVX (count_sv) = count;
2892
2893 /* now wake up as many waiters as are expected to lock */
2894 while (count > 0 && AvFILLp (av) > 0)
2895 {
2896 SV *cb;
2897
2898 /* swap first two elements so we can shift a waiter */
2899 AvARRAY (av)[0] = AvARRAY (av)[1];
2900 AvARRAY (av)[1] = count_sv;
2901 cb = av_shift (av);
2902
2903 if (SvOBJECT (cb))
2904 {
2905 api_ready (aTHX_ cb);
2906 --count;
2907 }
2908 else if (SvTYPE (cb) == SVt_PVCV)
2909 {
2910 dSP;
1847 PUSHMARK (SP); 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 }
1848 2916
1849 EXTEND (SP, 3); 2917 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2918 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2919}
1856 2920
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2921static void
2922coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2923{
2924 /* call $sem->adjust (0) to possibly wake up some other waiters */
2925 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2926}
1858 2927
1859enum { 2928static int
1860 CORO_SLF_CUSTOM = 0, 2929slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2930{
1862 CORO_SLF_TRANSFER = 2 2931 AV *av = (AV *)frame->data;
2932 SV *count_sv = AvARRAY (av)[0];
2933 SV *coro_hv = SvRV (coro_current);
2934
2935 /* if we are about to throw, don't actually acquire the lock, just throw */
2936 if (CORO_THROW)
2937 return 0;
2938 else if (SvIVX (count_sv) > 0)
2939 {
2940 frame->destroy = 0;
2941
2942 if (acquire)
2943 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2944 else
2945 coro_semaphore_adjust (aTHX_ av, 0);
2946
2947 return 0;
2948 }
2949 else
2950 {
2951 int i;
2952 /* if we were woken up but can't down, we look through the whole */
2953 /* waiters list and only add us if we aren't in there already */
2954 /* this avoids some degenerate memory usage cases */
2955 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2956 if (AvARRAY (av)[i] == coro_hv)
2957 return 1;
2958
2959 av_push (av, SvREFCNT_inc (coro_hv));
2960 return 1;
2961 }
2962}
2963
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
2977slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2978{
2979 AV *av = (AV *)SvRV (arg [0]);
2980
2981 if (SvIVX (AvARRAY (av)[0]) > 0)
2982 {
2983 frame->data = (void *)av;
2984 frame->prepare = prepare_nop;
2985 }
2986 else
2987 {
2988 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2989
2990 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2991 frame->prepare = prepare_schedule;
2992 /* to avoid race conditions when a woken-up coro gets terminated */
2993 /* we arrange for a temporary on_destroy that calls adjust (0) */
2994 frame->destroy = coro_semaphore_destroy;
2995 }
2996}
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);
3002 frame->check = slf_check_semaphore_down;
3003}
3004
3005static void
3006slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3007{
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]);
3013
3014 av_push (av, SvREFCNT_inc_NN (cb_cv));
3015
3016 if (SvIVX (AvARRAY (av)[0]) > 0)
3017 coro_semaphore_adjust (aTHX_ av, 0);
3018
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 }
3107}
3108
3109/*****************************************************************************/
3110/* Coro::AIO */
3111
3112#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3113
3114/* helper storage struct */
3115struct io_state
3116{
3117 int errorno;
3118 I32 laststype; /* U16 in 5.10.0 */
3119 int laststatval;
3120 Stat_t statcache;
1863}; 3121};
1864 3122
1865/* declare prototype */ 3123static void
1866XS(XS_Coro__State__set_stacklevel); 3124coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 3125{
3126 dXSARGS;
3127 AV *state = (AV *)S_GENSUB_ARG;
3128 SV *coro = av_pop (state);
3129 SV *data_sv = newSV (sizeof (struct io_state));
3130
3131 av_extend (state, items - 1);
3132
3133 sv_upgrade (data_sv, SVt_PV);
3134 SvCUR_set (data_sv, sizeof (struct io_state));
3135 SvPOK_only (data_sv);
3136
3137 {
3138 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3139
3140 data->errorno = errno;
3141 data->laststype = PL_laststype;
3142 data->laststatval = PL_laststatval;
3143 data->statcache = PL_statcache;
3144 }
3145
3146 /* now build the result vector out of all the parameters and the data_sv */
3147 {
3148 int i;
3149
3150 for (i = 0; i < items; ++i)
3151 av_push (state, SvREFCNT_inc_NN (ST (i)));
3152 }
3153
3154 av_push (state, data_sv);
3155
3156 api_ready (aTHX_ coro);
3157 SvREFCNT_dec (coro);
3158 SvREFCNT_dec ((AV *)state);
3159}
3160
3161static int
3162slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3163{
3164 AV *state = (AV *)frame->data;
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
3172 /* one element that is an RV? repeat! */
3173 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3174 return 1;
3175
3176 /* restore status */
3177 {
3178 SV *data_sv = av_pop (state);
3179 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3180
3181 errno = data->errorno;
3182 PL_laststype = data->laststype;
3183 PL_laststatval = data->laststatval;
3184 PL_statcache = data->statcache;
3185
3186 SvREFCNT_dec (data_sv);
3187 }
3188
3189 /* push result values */
3190 {
1877 dSP; 3191 dSP;
1878 struct transfer_args ta; 3192 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 SV *gv = *sp;
1884 3193
1885 /* do a quick consistency check on the "function" object, and if it isn't */ 3194 EXTEND (SP, AvFILLp (state) + 1);
1886 /* for us, divert to the real entersub */ 3195 for (i = 0; i <= AvFILLp (state); ++i)
1887 if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel) 3196 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1888 return PL_ppaddr[OP_ENTERSUB](aTHX);
1889 3197
1890 /* pop args */
1891 SP = PL_stack_base + POPMARK;
1892
1893 if (!(PL_op->op_flags & OPf_STACKED))
1894 {
1895 /* ampersand-form of call, use @_ instead of stack */
1896 AV *av = GvAV (PL_defgv);
1897 arg = AvARRAY (av);
1898 items = AvFILLp (av) + 1;
1899 }
1900
1901 PUTBACK; 3198 PUTBACK;
3199 }
1902 3200
1903 if (!ix) 3201 return 0;
1904 { 3202}
1905 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 3203
1906 ix = slf->prepare (aTHX_ arg, items); 3204static void
3205slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3206{
3207 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3208 SV *coro_hv = SvRV (coro_current);
3209 struct coro *coro = SvSTATE_hv (coro_hv);
3210
3211 /* put our coroutine id on the state arg */
3212 av_push (state, SvREFCNT_inc_NN (coro_hv));
3213
3214 /* first see whether we have a non-zero priority and set it as AIO prio */
3215 if (coro->prio)
1907 } 3216 {
3217 dSP;
1908 3218
1909 switch (ix) 3219 static SV *prio_cv;
3220 static SV *prio_sv;
3221
3222 if (expect_false (!prio_cv))
3223 {
3224 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3225 prio_sv = newSViv (0);
3226 }
3227
3228 PUSHMARK (SP);
3229 sv_setiv (prio_sv, coro->prio);
3230 XPUSHs (prio_sv);
3231
3232 PUTBACK;
3233 call_sv (prio_cv, G_VOID | G_DISCARD);
1910 { 3234 }
1911 case CORO_SLF_SET_STACKLEVEL:
1912 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913 break;
1914 3235
1915 case CORO_SLF_TRANSFER: 3236 /* now call the original request */
1916 if (items != 2) 3237 {
1917 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 3238 dSP;
3239 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3240 int i;
1918 3241
1919 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 3242 PUSHMARK (SP);
1920 break;
1921 3243
1922 case CORO_SLF_SCHEDULE: 3244 /* first push all args to the stack */
1923 prepare_schedule (aTHX_ &ta); 3245 EXTEND (SP, items + 1);
1924 break;
1925 3246
1926 case CORO_SLF_CEDE: 3247 for (i = 0; i < items; ++i)
1927 prepare_cede (aTHX_ &ta); 3248 PUSHs (arg [i]);
1928 break;
1929 3249
1930 case CORO_SLF_CEDE_NOTSELF: 3250 /* now push the callback closure */
1931 prepare_cede_notself (aTHX_ &ta); 3251 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1932 break;
1933 3252
1934 default: 3253 /* now call the AIO function - we assume our request is uncancelable */
1935 abort ();
1936 }
1937
1938 do
1939 TRANSFER (ta, 0);
1940 while (slf && slf->check (aTHX));
1941
1942 SPAGAIN;
1943
1944 PUTBACK; 3254 PUTBACK;
1945 SLF_TAIL; 3255 call_sv ((SV *)req, G_VOID | G_DISCARD);
1946 SPAGAIN; 3256 }
1947 RETURN;
1948}
1949 3257
1950static void 3258 /* now that the request is going, we loop till we have a result */
1951coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 3259 frame->data = (void *)state;
1952{ 3260 frame->prepare = prepare_schedule;
1953 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 3261 frame->check = slf_check_aio_req;
1954
1955 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956 slf_cv = cv;
1957
1958 /* we patch the op, and then re-run the whole call */
1959 /* we have to put the same argument on the stack for this to work */
1960 /* and this will be done by pp_restore */
1961 slf_restore.op_next = (OP *)&slf_restore;
1962 slf_restore.op_type = OP_NULL;
1963 slf_restore.op_ppaddr = pp_restore;
1964 slf_restore.op_first = PL_op;
1965
1966 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969 PL_op->op_ppaddr = pp_slf;
1970 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972 PL_op = (OP *)&slf_restore;
1973} 3262}
1974 3263
1975static void 3264static void
1976api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 3265coro_aio_req_xs (pTHX_ CV *cv)
1977{ 3266{
1978 CvXSUBANY (cv).any_ptr = (void *)slf; 3267 dXSARGS;
1979 coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items); 3268
3269 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3270
3271 XSRETURN_EMPTY;
3272}
3273
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;
1980} 3336}
1981 3337
1982MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3338MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1983 3339
1984PROTOTYPES: DISABLE 3340PROTOTYPES: DISABLE
1985 3341
1986BOOT: 3342BOOT:
1987{ 3343{
1988#ifdef USE_ITHREADS 3344#ifdef USE_ITHREADS
1989 MUTEX_INIT (&coro_lock);
1990# if CORO_PTHREAD 3345# if CORO_PTHREAD
1991 coro_thx = PERL_GET_CONTEXT; 3346 coro_thx = PERL_GET_CONTEXT;
1992# endif 3347# endif
1993#endif 3348#endif
1994 BOOT_PAGESIZE; 3349 BOOT_PAGESIZE;
1995 3350
3351 cctx_current = cctx_new_empty ();
3352
1996 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3353 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1997 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3354 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1998 3355
1999 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;
2000 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;
… …
2015 main_top_env = PL_top_env; 3372 main_top_env = PL_top_env;
2016 3373
2017 while (main_top_env->je_prev) 3374 while (main_top_env->je_prev)
2018 main_top_env = main_top_env->je_prev; 3375 main_top_env = main_top_env->je_prev;
2019 3376
3377 {
3378 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3379
3380 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3381 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3382
3383 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3384 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3385 }
3386
2020 coroapi.ver = CORO_API_VERSION; 3387 coroapi.ver = CORO_API_VERSION;
2021 coroapi.rev = CORO_API_REVISION; 3388 coroapi.rev = CORO_API_REVISION;
3389
2022 coroapi.transfer = api_transfer; 3390 coroapi.transfer = api_transfer;
3391
3392 coroapi.sv_state = SvSTATE_;
2023 coroapi.execute_slf = api_execute_slf; 3393 coroapi.execute_slf = api_execute_slf;
3394 coroapi.prepare_nop = prepare_nop;
3395 coroapi.prepare_schedule = prepare_schedule;
3396 coroapi.prepare_cede = prepare_cede;
3397 coroapi.prepare_cede_notself = prepare_cede_notself;
2024 3398
2025 { 3399 time_init (aTHX);
2026 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027 3400
2028 if (!svp) croak ("Time::HiRes is required");
2029 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2030
2031 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2032 }
2033
2034 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3401 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2035} 3402}
2036 3403
2037SV * 3404SV *
2038new (char *klass, ...) 3405new (SV *klass, ...)
3406 ALIAS:
3407 Coro::new = 1
2039 CODE: 3408 CODE:
2040{ 3409 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2041 struct coro *coro;
2042 MAGIC *mg;
2043 HV *hv;
2044 int i;
2045
2046 Newz (0, coro, 1, struct coro);
2047 coro->args = newAV ();
2048 coro->flags = CF_NEW;
2049
2050 if (coro_first) coro_first->prev = coro;
2051 coro->next = coro_first;
2052 coro_first = coro;
2053
2054 coro->hv = hv = newHV ();
2055 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056 mg->mg_flags |= MGf_DUP;
2057 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2058
2059 av_extend (coro->args, items - 1);
2060 for (i = 1; i < items; i++)
2061 av_push (coro->args, newSVsv (ST (i)));
2062}
2063 OUTPUT:
2064 RETVAL
2065
2066void
2067_set_stacklevel (...)
2068 ALIAS:
2069 _set_stacklevel = CORO_SLF_SET_STACKLEVEL
2070 Coro::State::transfer = CORO_SLF_TRANSFER
2071 Coro::schedule = CORO_SLF_SCHEDULE
2072 Coro::cede = CORO_SLF_CEDE
2073 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2074 CODE:
2075 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2076
2077bool
2078_destroy (SV *coro_sv)
2079 CODE:
2080 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2081 OUTPUT: 3410 OUTPUT:
2082 RETVAL 3411 RETVAL
3412
3413void
3414transfer (...)
3415 PROTOTYPE: $$
3416 CODE:
3417 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2083 3418
2084void 3419void
2085_exit (int code) 3420_exit (int code)
2086 PROTOTYPE: $ 3421 PROTOTYPE: $
2087 CODE: 3422 CODE:
2088 _exit (code); 3423 _exit (code);
2089 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
3443
2090int 3444int
2091cctx_stacksize (int new_stacksize = 0) 3445cctx_stacksize (int new_stacksize = 0)
3446 PROTOTYPE: ;$
2092 CODE: 3447 CODE:
2093 RETVAL = cctx_stacksize; 3448 RETVAL = cctx_stacksize;
2094 if (new_stacksize) 3449 if (new_stacksize)
2095 { 3450 {
2096 cctx_stacksize = new_stacksize; 3451 cctx_stacksize = new_stacksize;
… …
2099 OUTPUT: 3454 OUTPUT:
2100 RETVAL 3455 RETVAL
2101 3456
2102int 3457int
2103cctx_max_idle (int max_idle = 0) 3458cctx_max_idle (int max_idle = 0)
3459 PROTOTYPE: ;$
2104 CODE: 3460 CODE:
2105 RETVAL = cctx_max_idle; 3461 RETVAL = cctx_max_idle;
2106 if (max_idle > 1) 3462 if (max_idle > 1)
2107 cctx_max_idle = max_idle; 3463 cctx_max_idle = max_idle;
2108 OUTPUT: 3464 OUTPUT:
2109 RETVAL 3465 RETVAL
2110 3466
2111int 3467int
2112cctx_count () 3468cctx_count ()
3469 PROTOTYPE:
2113 CODE: 3470 CODE:
2114 RETVAL = cctx_count; 3471 RETVAL = cctx_count;
2115 OUTPUT: 3472 OUTPUT:
2116 RETVAL 3473 RETVAL
2117 3474
2118int 3475int
2119cctx_idle () 3476cctx_idle ()
3477 PROTOTYPE:
2120 CODE: 3478 CODE:
2121 RETVAL = cctx_idle; 3479 RETVAL = cctx_idle;
2122 OUTPUT: 3480 OUTPUT:
2123 RETVAL 3481 RETVAL
2124 3482
2125void 3483void
2126list () 3484list ()
3485 PROTOTYPE:
2127 PPCODE: 3486 PPCODE:
2128{ 3487{
2129 struct coro *coro; 3488 struct coro *coro;
2130 for (coro = coro_first; coro; coro = coro->next) 3489 for (coro = coro_first; coro; coro = coro->next)
2131 if (coro->hv) 3490 if (coro->hv)
… …
2138 eval = 1 3497 eval = 1
2139 CODE: 3498 CODE:
2140{ 3499{
2141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3500 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2142 { 3501 {
2143 struct coro temp; 3502 struct coro *current = SvSTATE_current;
3503 struct CoroSLF slf_save;
2144 3504
2145 if (!(coro->flags & CF_RUNNING)) 3505 if (current != coro)
2146 { 3506 {
2147 PUTBACK; 3507 PUTBACK;
2148 save_perl (aTHX_ &temp); 3508 save_perl (aTHX_ current);
2149 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;
2150 } 3520 }
2151 3521
2152 {
2153 dSP;
2154 ENTER;
2155 SAVETMPS;
2156 PUTBACK;
2157 PUSHSTACK; 3522 PUSHSTACK;
3523
2158 PUSHMARK (SP); 3524 PUSHMARK (SP);
3525 PUTBACK;
2159 3526
2160 if (ix) 3527 if (ix)
2161 eval_sv (coderef, 0); 3528 eval_sv (coderef, 0);
2162 else 3529 else
2163 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3530 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2164 3531
2165 POPSTACK; 3532 POPSTACK;
2166 SPAGAIN; 3533 SPAGAIN;
2167 FREETMPS;
2168 LEAVE;
2169 PUTBACK;
2170 }
2171 3534
2172 if (!(coro->flags & CF_RUNNING)) 3535 if (current != coro)
2173 { 3536 {
3537 PUTBACK;
3538 slf_frame = slf_save;
2174 save_perl (aTHX_ coro); 3539 save_perl (aTHX_ coro);
2175 load_perl (aTHX_ &temp); 3540 load_perl (aTHX_ current);
2176 SPAGAIN; 3541 SPAGAIN;
2177 } 3542 }
2178 } 3543 }
2179} 3544}
2180 3545
… …
2183 PROTOTYPE: $ 3548 PROTOTYPE: $
2184 ALIAS: 3549 ALIAS:
2185 is_ready = CF_READY 3550 is_ready = CF_READY
2186 is_running = CF_RUNNING 3551 is_running = CF_RUNNING
2187 is_new = CF_NEW 3552 is_new = CF_NEW
2188 is_destroyed = CF_DESTROYED 3553 is_destroyed = CF_ZOMBIE
3554 is_zombie = CF_ZOMBIE
3555 is_suspended = CF_SUSPENDED
2189 CODE: 3556 CODE:
2190 RETVAL = boolSV (coro->flags & ix); 3557 RETVAL = boolSV (coro->flags & ix);
2191 OUTPUT: 3558 OUTPUT:
2192 RETVAL 3559 RETVAL
2193 3560
2194void 3561void
2195throw (Coro::State self, SV *throw = &PL_sv_undef) 3562throw (Coro::State self, SV *exception = &PL_sv_undef)
2196 PROTOTYPE: $;$ 3563 PROTOTYPE: $;$
2197 CODE: 3564 CODE:
3565{
3566 struct coro *current = SvSTATE_current;
3567 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2198 SvREFCNT_dec (self->throw); 3568 SvREFCNT_dec (*exceptionp);
2199 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3569 SvGETMAGIC (exception);
3570 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3571}
2200 3572
2201void 3573void
2202api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3575 PROTOTYPE: $;$
2203 C_ARGS: aTHX_ coro, flags 3576 C_ARGS: aTHX_ coro, flags
2204 3577
2205SV * 3578SV *
2206has_cctx (Coro::State coro) 3579has_cctx (Coro::State coro)
2207 PROTOTYPE: $ 3580 PROTOTYPE: $
2208 CODE: 3581 CODE:
2209 RETVAL = boolSV (!!coro->cctx); 3582 /* maybe manage the running flag differently */
3583 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2210 OUTPUT: 3584 OUTPUT:
2211 RETVAL 3585 RETVAL
2212 3586
2213int 3587int
2214is_traced (Coro::State coro) 3588is_traced (Coro::State coro)
… …
2232 OUTPUT: 3606 OUTPUT:
2233 RETVAL 3607 RETVAL
2234 3608
2235void 3609void
2236force_cctx () 3610force_cctx ()
3611 PROTOTYPE:
2237 CODE: 3612 CODE:
2238 struct coro *coro = SvSTATE (coro_current);
2239 coro->cctx->idle_sp = 0; 3613 cctx_current->idle_sp = 0;
2240 3614
2241void 3615void
2242swap_defsv (Coro::State self) 3616swap_defsv (Coro::State self)
2243 PROTOTYPE: $ 3617 PROTOTYPE: $
2244 ALIAS: 3618 ALIAS:
2245 swap_defav = 1 3619 swap_defav = 1
2246 CODE: 3620 CODE:
2247 if (!self->slot) 3621 if (!self->slot)
2248 croak ("cannot swap state with coroutine that has no saved state"); 3622 croak ("cannot swap state with coroutine that has no saved state,");
2249 else 3623 else
2250 { 3624 {
2251 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3625 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3626 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253 3627
2254 SV *tmp = *src; *src = *dst; *dst = tmp; 3628 SV *tmp = *src; *src = *dst; *dst = tmp;
2255 } 3629 }
2256 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
3692
2257MODULE = Coro::State PACKAGE = Coro 3693MODULE = Coro::State PACKAGE = Coro
2258 3694
2259BOOT: 3695BOOT:
2260{ 3696{
2261 int i;
2262
2263 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3697 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3698 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266 3699 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2267 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3700 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2268 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);
2269 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
2270 coro_stash = gv_stashpv ("Coro", TRUE); 3711 coro_stash = gv_stashpv ("Coro", TRUE);
2271 3712
2272 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3713 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2273 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3714 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2274 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3715 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2275 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3716 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2276 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3717 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2277 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3718 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2278
2279 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2280 coro_ready[i] = newAV ();
2281 3719
2282 { 3720 {
2283 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3721 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2284 3722
2285 coroapi.schedule = api_schedule; 3723 coroapi.schedule = api_schedule;
3724 coroapi.schedule_to = api_schedule_to;
2286 coroapi.cede = api_cede; 3725 coroapi.cede = api_cede;
2287 coroapi.cede_notself = api_cede_notself; 3726 coroapi.cede_notself = api_cede_notself;
2288 coroapi.ready = api_ready; 3727 coroapi.ready = api_ready;
2289 coroapi.is_ready = api_is_ready; 3728 coroapi.is_ready = api_is_ready;
2290 coroapi.nready = coro_nready; 3729 coroapi.nready = coro_nready;
2291 coroapi.current = coro_current; 3730 coroapi.current = coro_current;
2292 3731
2293 GCoroAPI = &coroapi; 3732 /*GCoroAPI = &coroapi;*/
2294 sv_setiv (sv, (IV)&coroapi); 3733 sv_setiv (sv, (IV)&coroapi);
2295 SvREADONLY_on (sv); 3734 SvREADONLY_on (sv);
2296 } 3735 }
2297} 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
3776
3777void
3778schedule (...)
3779 CODE:
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);
3791
3792void
3793cede (...)
3794 CODE:
3795 CORO_EXECUTE_SLF_XS (slf_init_cede);
3796
3797void
3798cede_notself (...)
3799 CODE:
3800 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2298 3801
2299void 3802void
2300_set_current (SV *current) 3803_set_current (SV *current)
2301 PROTOTYPE: $ 3804 PROTOTYPE: $
2302 CODE: 3805 CODE:
… …
2305 3808
2306void 3809void
2307_set_readyhook (SV *hook) 3810_set_readyhook (SV *hook)
2308 PROTOTYPE: $ 3811 PROTOTYPE: $
2309 CODE: 3812 CODE:
2310 LOCK;
2311 SvREFCNT_dec (coro_readyhook); 3813 SvREFCNT_dec (coro_readyhook);
3814 SvGETMAGIC (hook);
3815 if (SvOK (hook))
3816 {
2312 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3817 coro_readyhook = newSVsv (hook);
2313 UNLOCK; 3818 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3819 }
3820 else
3821 {
3822 coro_readyhook = 0;
3823 CORO_READYHOOK = 0;
3824 }
2314 3825
2315int 3826int
2316prio (Coro::State coro, int newprio = 0) 3827prio (Coro::State coro, int newprio = 0)
3828 PROTOTYPE: $;$
2317 ALIAS: 3829 ALIAS:
2318 nice = 1 3830 nice = 1
2319 CODE: 3831 CODE:
2320{ 3832{
2321 RETVAL = coro->prio; 3833 RETVAL = coro->prio;
… …
2323 if (items > 1) 3835 if (items > 1)
2324 { 3836 {
2325 if (ix) 3837 if (ix)
2326 newprio = coro->prio - newprio; 3838 newprio = coro->prio - newprio;
2327 3839
2328 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3840 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2329 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3841 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2330 3842
2331 coro->prio = newprio; 3843 coro->prio = newprio;
2332 } 3844 }
2333} 3845}
2334 OUTPUT: 3846 OUTPUT:
… …
2348 CODE: 3860 CODE:
2349 RETVAL = coro_nready; 3861 RETVAL = coro_nready;
2350 OUTPUT: 3862 OUTPUT:
2351 RETVAL 3863 RETVAL
2352 3864
2353# for async_pool speedup
2354void 3865void
2355_pool_1 (SV *cb) 3866suspend (Coro::State self)
3867 PROTOTYPE: $
2356 CODE: 3868 CODE:
2357{ 3869 self->flags |= CF_SUSPENDED;
2358 struct coro *coro = SvSTATE (coro_current);
2359 HV *hv = (HV *)SvRV (coro_current);
2360 AV *defav = GvAV (PL_defgv);
2361 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362 AV *invoke_av;
2363 int i, len;
2364 3870
2365 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)
2366 { 3897 {
2367 SV *old = PL_diehook; 3898 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2368 PL_diehook = 0; 3899 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2369 SvREFCNT_dec (old); 3900 SvREFCNT_dec (sv);
2370 croak ("\3async_pool terminate\2\n");
2371 } 3901 }
2372 3902
2373 SvREFCNT_dec (coro->saved_deffh);
2374 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 invoke_av = (AV *)SvRV (invoke);
2380 len = av_len (invoke_av);
2381
2382 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384 if (len > 0)
2385 { 3903 {
2386 av_fill (defav, len - 1); 3904 struct coro *coro = SvSTATE_hv (hv);
2387 for (i = 0; i < len; ++i) 3905
2388 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;
2389 } 3910 }
2390 3911
3912 api_ready (aTHX_ (SV *)hv);
3913
3914 if (GIMME_V != G_VOID)
3915 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3916 else
2391 SvREFCNT_dec (invoke); 3917 SvREFCNT_dec (hv);
2392} 3918}
2393 3919
2394void 3920SV *
2395_pool_2 (SV *cb) 3921rouse_cb ()
3922 PROTOTYPE:
2396 CODE: 3923 CODE:
2397{ 3924 RETVAL = coro_new_rouse_cb (aTHX);
2398 struct coro *coro = SvSTATE (coro_current);
2399
2400 sv_setsv (cb, &PL_sv_undef);
2401
2402 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403 coro->saved_deffh = 0;
2404
2405 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407 {
2408 SV *old = PL_diehook;
2409 PL_diehook = 0;
2410 SvREFCNT_dec (old);
2411 croak ("\3async_pool terminate\2\n");
2412 }
2413
2414 av_clear (GvAV (PL_defgv));
2415 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 av_push (av_async_pool, newSVsv (coro_current));
2424}
2425
2426#if 0
2427
2428void
2429_generator_call (...)
2430 PROTOTYPE: @
2431 PPCODE:
2432 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433 xxxx
2434 abort ();
2435
2436SV *
2437gensub (SV *sub, ...)
2438 PROTOTYPE: &;@
2439 CODE:
2440{
2441 struct coro *coro;
2442 MAGIC *mg;
2443 CV *xcv;
2444 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445 int i;
2446
2447 CvGV (ncv) = CvGV (cv);
2448 CvFILE (ncv) = CvFILE (cv);
2449
2450 Newz (0, coro, 1, struct coro);
2451 coro->args = newAV ();
2452 coro->flags = CF_NEW;
2453
2454 av_extend (coro->args, items - 1);
2455 for (i = 1; i < items; i++)
2456 av_push (coro->args, newSVsv (ST (i)));
2457
2458 CvISXSUB_on (ncv);
2459 CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463 CvXSUB (ncv) = CvXSUB (xcv);
2464 CvANON_on (ncv);
2465
2466 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467 RETVAL = newRV_noinc ((SV *)ncv);
2468}
2469 OUTPUT: 3925 OUTPUT:
2470 RETVAL 3926 RETVAL
2471 3927
2472#endif
2473
2474
2475MODULE = Coro::State PACKAGE = Coro::AIO
2476
2477void 3928void
2478_get_state (SV *self) 3929rouse_wait (...)
3930 PROTOTYPE: ;$
2479 PPCODE: 3931 PPCODE:
2480{ 3932 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2481 AV *defav = GvAV (PL_defgv);
2482 AV *av = newAV ();
2483 int i;
2484 SV *data_sv = newSV (sizeof (struct io_state));
2485 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2486 SvCUR_set (data_sv, sizeof (struct io_state));
2487 SvPOK_only (data_sv);
2488
2489 data->errorno = errno;
2490 data->laststype = PL_laststype;
2491 data->laststatval = PL_laststatval;
2492 data->statcache = PL_statcache;
2493
2494 av_extend (av, AvFILLp (defav) + 1 + 1);
2495
2496 for (i = 0; i <= AvFILLp (defav); ++i)
2497 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2498
2499 av_push (av, data_sv);
2500
2501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2502
2503 api_ready (aTHX_ self);
2504}
2505 3933
2506void 3934void
2507_set_state (SV *state) 3935on_enter (SV *block)
3936 ALIAS:
3937 on_leave = 1
2508 PROTOTYPE: $ 3938 PROTOTYPE: &
3939 CODE:
3940{
3941 struct coro *coro = SvSTATE_current;
3942 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3943
3944 block = s_get_cv_croak (block);
3945
3946 if (!*avp)
3947 *avp = newAV ();
3948
3949 av_push (*avp, SvREFCNT_inc (block));
3950
3951 if (!ix)
3952 on_enterleave_call (aTHX_ block);
3953
3954 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3955 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3956 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3957}
3958
3959
3960MODULE = Coro::State PACKAGE = PerlIO::cede
3961
3962BOOT:
3963 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3964
3965
3966MODULE = Coro::State PACKAGE = Coro::Semaphore
3967
3968SV *
3969new (SV *klass, SV *count = 0)
3970 CODE:
3971{
3972 int semcnt = 1;
3973
3974 if (count)
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 );
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);
3995 OUTPUT:
3996 RETVAL
3997
3998SV *
3999count (SV *self)
4000 CODE:
4001 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4002 OUTPUT:
4003 RETVAL
4004
4005void
4006up (SV *self, int adjust = 1)
4007 ALIAS:
4008 adjust = 1
4009 CODE:
4010 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4011
4012void
4013down (...)
4014 CODE:
4015 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4016
4017void
4018wait (...)
4019 CODE:
4020 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4021
4022void
4023try (SV *self)
4024 PPCODE:
4025{
4026 AV *av = (AV *)SvRV (self);
4027 SV *count_sv = AvARRAY (av)[0];
4028 IV count = SvIVX (count_sv);
4029
4030 if (count > 0)
4031 {
4032 --count;
4033 SvIVX (count_sv) = count;
4034 XSRETURN_YES;
4035 }
4036 else
4037 XSRETURN_NO;
4038}
4039
4040void
4041waiters (SV *self)
4042 PPCODE:
4043{
4044 AV *av = (AV *)SvRV (self);
4045 int wcount = AvFILLp (av) + 1 - 1;
4046
4047 if (GIMME_V == G_SCALAR)
4048 XPUSHs (sv_2mortal (newSViv (wcount)));
4049 else
4050 {
4051 int i;
4052 EXTEND (SP, wcount);
4053 for (i = 1; i <= wcount; ++i)
4054 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4055 }
4056}
4057
4058MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4059
4060void
4061_may_delete (SV *sem, int count, int extra_refs)
2509 PPCODE: 4062 PPCODE:
2510{ 4063{
2511 AV *av = (AV *)SvRV (state); 4064 AV *av = (AV *)SvRV (sem);
2512 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2513 int i;
2514 4065
2515 errno = data->errorno; 4066 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2516 PL_laststype = data->laststype; 4067 && AvFILLp (av) == 0 /* no waiters, just count */
2517 PL_laststatval = data->laststatval; 4068 && SvIV (AvARRAY (av)[0]) == count)
2518 PL_statcache = data->statcache; 4069 XSRETURN_YES;
2519 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
2520 EXTEND (SP, AvFILLp (av)); 4105 if (AvFILLp (av))
2521 for (i = 0; i < AvFILLp (av); ++i) 4106 coro_signal_wake (aTHX_ av, 1);
2522 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4107 else
4108 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2523} 4109}
4110
4111IV
4112awaited (SV *self)
4113 CODE:
4114 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4115 OUTPUT:
4116 RETVAL
2524 4117
2525 4118
2526MODULE = Coro::State PACKAGE = Coro::AnyEvent 4119MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527 4120
2528BOOT: 4121BOOT:
2529 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4122 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530 4123
2531SV * 4124void
2532_schedule (...) 4125_schedule (...)
2533 PROTOTYPE: @
2534 CODE: 4126 CODE:
2535{ 4127{
2536 static int incede; 4128 static int incede;
2537 4129
2538 api_cede_notself (aTHX); 4130 api_cede_notself (aTHX);
… …
2544 sv_setsv (sv_activity, &PL_sv_undef); 4136 sv_setsv (sv_activity, &PL_sv_undef);
2545 if (coro_nready >= incede) 4137 if (coro_nready >= incede)
2546 { 4138 {
2547 PUSHMARK (SP); 4139 PUSHMARK (SP);
2548 PUTBACK; 4140 PUTBACK;
2549 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4141 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2550 SPAGAIN;
2551 } 4142 }
2552 4143
2553 --incede; 4144 --incede;
2554} 4145}
2555 4146
2556 4147
2557MODULE = Coro::State PACKAGE = PerlIO::cede 4148MODULE = Coro::State PACKAGE = Coro::AIO
2558 4149
2559BOOT: 4150void
2560 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4151_register (char *target, char *proto, SV *req)
4152 CODE:
4153{
4154 SV *req_cv = s_get_cv_croak (req);
4155 /* newXSproto doesn't return the CV on 5.8 */
4156 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4157 sv_setpv ((SV *)slf_cv, proto);
4158 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4159}
2561 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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