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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.376 by root, Fri Oct 2 20:48:04 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
51#endif 57#endif
52 58
53/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 60static int cctx_max_idle = 4;
55 61
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 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
108#endif 64#endif
109 65
110#ifndef CORO_STACKGUARD 66#ifndef CORO_STACKGUARD
… …
117#endif 73#endif
118 74
119/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 76 * portable way as possible. */
121#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
123#else 80#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
125#endif 83#endif
126 84
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
128 86
129#if __GNUC__ >= 3 87#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 90# define INLINE static inline
133#else 91#else
134# define attribute(x) 92# define attribute(x)
135# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
136# define INLINE static 94# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
141 99
142#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#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 106# if CORO_PTHREAD
152static void *coro_thx; 107static void *coro_thx;
153# endif 108# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 109#endif
161 110
162# undef LOCK 111#ifdef __linux
163# define LOCK (void)0 112# include <time.h> /* for timespec */
164# undef UNLOCK 113# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 114# ifdef SYS_clock_gettime
166 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 116# define CORO_CLOCK_MONOTONIC 1
168struct io_state 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 118# endif
170 AV *res; 119#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 120
177static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
178 127
179static U32 cctx_gen; 128static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 129static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 130static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 132static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
187 139
188static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 142static SV *rv_diehook;
191static SV *rv_warnhook; 143static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
193 145
194/* async_pool helper stuff */ 146/* async_pool helper stuff */
195static SV *sv_pool_rss; 147static SV *sv_pool_rss;
196static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
198 153
199/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
200static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
201 162
202static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
204 165
205enum { 166enum {
… …
231 int valgrind_id; 192 int valgrind_id;
232#endif 193#endif
233 unsigned char flags; 194 unsigned char flags;
234} coro_cctx; 195} coro_cctx;
235 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
236enum { 201enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 207};
242 208
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 210typedef struct
245{ 211{
246 SV *defsv; 212 SV *defsv;
247 AV *defav; 213 AV *defav;
248 SV *errsv; 214 SV *errsv;
249 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
250#define VAR(name,type) type name; 217#define VAR(name,type) type name;
251# include "state.h" 218# include "state.h"
252#undef VAR 219#undef VAR
253} perl_slots; 220} perl_slots;
254 221
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 223
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
267struct coro { 225struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 227 coro_cctx *cctx;
270 228
271 /* process data */ 229 /* ready queue */
230 struct coro *next_ready;
231
232 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 233 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 234 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
276 236
237 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
242 void (*on_destroy)(pTHX_ struct coro *coro);
281 243
282 /* statistics */ 244 /* statistics */
283 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
284 246
285 /* coro process data */ 247 /* coro process data */
286 int prio; 248 int prio;
287 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
288 251
289 /* async_pool */ 252 /* async_pool */
290 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
291 266
292 /* linked list */ 267 /* linked list */
293 struct coro *next, *prev; 268 struct coro *next, *prev;
294}; 269};
295 270
296typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
298 273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
299static struct slf_frame slf_frame; /* the current slf frame */ 277static struct CoroSLF slf_frame; /* the current slf frame */
300 278
301/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
302 280
303#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
304#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
305#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
306#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
307#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
308#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
309 287
310/* for Coro.pm */ 288/* for Coro.pm */
311static SV *coro_current; 289static SV *coro_current;
312static SV *coro_readyhook; 290static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
292static CV *cv_coro_run, *cv_coro_terminate;
314static struct coro *coro_first; 293static struct coro *coro_first;
315#define coro_nready coroapi.nready 294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
316 315
317/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
318 317
319static SV * 318static SV *
320coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
344 get_hv (name, create); 343 get_hv (name, create);
345#endif 344#endif
346 return get_hv (name, create); 345 return get_hv (name, create);
347} 346}
348 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
349static AV * 447static AV *
350coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
351{ 449{
352 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
354 452
355 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
361#endif 459#endif
362 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
363 --AvFILLp (padlist); 461 --AvFILLp (padlist);
364 462
365 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
366 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
367 465
368 return newpadlist; 466 return newpadlist;
369} 467}
370 468
371static void 469static void
372free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
373{ 471{
374 /* may be during global destruction */ 472 /* may be during global destruction */
375 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
376 { 474 {
377 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
378 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
379 { 478 {
380 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
381 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
382 { 481 I32 j = AvFILLp (av);
383 SV *sv; 482
384 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
385 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
386
387 SvREFCNT_dec (*svp);
388 }
389 } 488 }
390 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
391 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
392 } 494 }
393} 495}
394 496
395static int 497static int
396coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
397{ 499{
398 AV *padlist; 500 AV *padlist;
399 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
400 506
401 /* casting is fun. */ 507 /* casting is fun. */
402 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
403 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
404 510
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 512
407 return 0; 513 return 0;
408} 514}
409
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext
411#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 515
413static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 517 0, 0, 0, 0,
415 coro_cv_free 518 coro_cv_free
416}; 519};
417
418#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \
420 ? SvMAGIC (sv)->mg_type == type \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0
424
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427
428INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro)
430{
431 HV *stash;
432 MAGIC *mg;
433
434 if (SvROK (coro))
435 coro = SvRV (coro);
436
437 if (expect_false (SvTYPE (coro) != SVt_PVHV))
438 croak ("Coro::State object required");
439
440 stash = SvSTASH (coro);
441 if (expect_false (stash != coro_stash && stash != coro_state_stash))
442 {
443 /* very slow, but rare, check */
444 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
445 croak ("Coro::State object required");
446 }
447
448 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr;
450}
451
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
453 520
454/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
455static void 522static void
456get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
457{ 524{
… …
463 else 530 else
464 { 531 {
465#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
472#else 539#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 541#endif
475 } 542 }
476} 543}
477 544
478static void 545static void
… …
485 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
486 553
487 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
488 555
489 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
490 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
491 558
492 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
493} 560}
494 561
495/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
496 617
497static void 618static void
498load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
499{ 620{
500 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
501 c->slot = 0; 622 c->slot = 0;
502 623
503 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
504 625
505 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
506 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
507 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
508 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
509 631
510 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
511 # include "state.h" 633 # include "state.h"
512 #undef VAR 634 #undef VAR
513 635
… …
525 } 647 }
526 648
527 PUTBACK; 649 PUTBACK;
528 } 650 }
529 651
530 slf_frame = c->slf_frame; 652 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
532} 672}
533 673
534static void 674static void
535save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
536{ 676{
537 c->slf_data = coroapi.slf_data; 677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 696 c->slf_frame = slf_frame;
539 697
540 { 698 {
541 dSP; 699 dSP;
542 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
… …
554 { 712 {
555 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
556 { 714 {
557 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
558 716
559 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
560 { 718 {
561 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
562 720
563 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
564 { 722 {
565 EXTEND (SP, 3);
566 PUSHs ((SV *)CvPADLIST (cv)); 723 PUSHs ((SV *)CvPADLIST (cv));
567 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 724 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
568 PUSHs ((SV *)cv); 725 PUSHs ((SV *)cv);
569 726
570 CvDEPTH (cv) = 0; 727 CvDEPTH (cv) = 0;
… …
588 /* we manually unroll here, as usually 2 slots is enough */ 745 /* we manually unroll here, as usually 2 slots is enough */
589 if (SLOT_COUNT >= 1) CXINC; 746 if (SLOT_COUNT >= 1) CXINC;
590 if (SLOT_COUNT >= 2) CXINC; 747 if (SLOT_COUNT >= 2) CXINC;
591 if (SLOT_COUNT >= 3) CXINC; 748 if (SLOT_COUNT >= 3) CXINC;
592 { 749 {
593 int i; 750 unsigned int i;
594 for (i = 3; i < SLOT_COUNT; ++i) 751 for (i = 3; i < SLOT_COUNT; ++i)
595 CXINC; 752 CXINC;
596 } 753 }
597 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 754 cxstack_ix -= SLOT_COUNT; /* undo allocation */
598 755
599 c->mainstack = PL_mainstack; 756 c->mainstack = PL_mainstack;
600 757
601 { 758 {
602 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 759 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
603 760
604 slot->defav = GvAV (PL_defgv); 761 slot->defav = GvAV (PL_defgv);
605 slot->defsv = DEFSV; 762 slot->defsv = DEFSV;
606 slot->errsv = ERRSV; 763 slot->errsv = ERRSV;
607 slot->irsgv = GvSV (irsgv); 764 slot->irsgv = GvSV (irsgv);
765 slot->hinthv = GvHV (PL_hintgv);
608 766
609 #define VAR(name,type) slot->name = PL_ ## name; 767 #define VAR(name,type) slot->name = PL_ ## name;
610 # include "state.h" 768 # include "state.h"
611 #undef VAR 769 #undef VAR
612 } 770 }
… …
617 * of perl.c:init_stacks, except that it uses less memory 775 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 776 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 777 * not usually need a lot of stackspace.
620 */ 778 */
621#if CORO_PREFER_PERL_FUNCTIONS 779#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 780# define coro_init_stacks(thx) init_stacks ()
623#else 781#else
624static void 782static void
625coro_init_stacks (pTHX) 783coro_init_stacks (pTHX)
626{ 784{
627 PL_curstackinfo = new_stackinfo(32, 8); 785 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 848#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 849 Safefree (PL_retstack);
692#endif 850#endif
693} 851}
694 852
853#define CORO_RSS \
854 rss += sizeof (SYM (curstackinfo)); \
855 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
856 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
857 rss += SYM (tmps_max) * sizeof (SV *); \
858 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
859 rss += SYM (scopestack_max) * sizeof (I32); \
860 rss += SYM (savestack_max) * sizeof (ANY);
861
695static size_t 862static size_t
696coro_rss (pTHX_ struct coro *coro) 863coro_rss (pTHX_ struct coro *coro)
697{ 864{
698 size_t rss = sizeof (*coro); 865 size_t rss = sizeof (*coro);
699 866
700 if (coro->mainstack) 867 if (coro->mainstack)
701 { 868 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 869 if (coro->flags & CF_RUNNING)
706 { 870 {
707 slot = &tmp_slot; 871 #define SYM(sym) PL_ ## sym
708 872 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 873 #undef SYM
712 } 874 }
713 else 875 else
714 slot = coro->slot;
715
716 if (slot)
717 { 876 {
718 rss += sizeof (slot->curstackinfo); 877 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 878 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 879 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 880 }
730 } 881 }
731 882
732 return rss; 883 return rss;
733} 884}
… …
746#endif 897#endif
747 898
748/* 899/*
749 * This overrides the default magic get method of %SIG elements. 900 * This overrides the default magic get method of %SIG elements.
750 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 901 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
751 * and instead of tryign to save and restore the hash elements, we just provide 902 * and instead of trying to save and restore the hash elements, we just provide
752 * readback here. 903 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 904 */
757static int 905static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 906coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 907{
760 const char *s = MgPV_nolen_const (mg); 908 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 961 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 962
815 if (svp) 963 if (svp)
816 { 964 {
817 SV *old = *svp; 965 SV *old = *svp;
818 *svp = newSVsv (sv); 966 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 967 SvREFCNT_dec (old);
820 return 0; 968 return 0;
821 } 969 }
822 } 970 }
823 971
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 972 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 973}
826 974
827static void 975static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 976prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 977{
830 /* kind of mega-hacky, but works */ 978 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 979 ta->next = ta->prev = (struct coro *)ta;
832} 980}
833 981
834static int 982static int
835slf_check_nop (aTHX) 983slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 984{
837 return 0; 985 return 0;
838} 986}
839 987
840static void 988static int
989slf_check_repeat (pTHX_ struct CoroSLF *frame)
990{
991 return 1;
992}
993
994static UNOP init_perl_op;
995
996static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 997init_perl (pTHX_ struct coro *coro)
842{ 998{
843 /* 999 /*
844 * emulate part of the perl startup here. 1000 * emulate part of the perl startup here.
845 */ 1001 */
846 coro_init_stacks (aTHX); 1002 coro_init_stacks (aTHX);
847 1003
848 PL_runops = RUNOPS_DEFAULT; 1004 PL_runops = RUNOPS_DEFAULT;
849 PL_curcop = &PL_compiling; 1005 PL_curcop = &PL_compiling;
850 PL_in_eval = EVAL_NULL; 1006 PL_in_eval = EVAL_NULL;
851 PL_comppad = 0; 1007 PL_comppad = 0;
1008 PL_comppad_name = 0;
1009 PL_comppad_name_fill = 0;
1010 PL_comppad_name_floor = 0;
852 PL_curpm = 0; 1011 PL_curpm = 0;
853 PL_curpad = 0; 1012 PL_curpad = 0;
854 PL_localizing = 0; 1013 PL_localizing = 0;
855 PL_dirty = 0; 1014 PL_dirty = 0;
856 PL_restartop = 0; 1015 PL_restartop = 0;
857#if PERL_VERSION_ATLEAST (5,10,0) 1016#if PERL_VERSION_ATLEAST (5,10,0)
858 PL_parser = 0; 1017 PL_parser = 0;
859#endif 1018#endif
1019 PL_hints = 0;
860 1020
861 /* recreate the die/warn hooks */ 1021 /* recreate the die/warn hooks */
862 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1022 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
863 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1023 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
864 1024
865 GvSV (PL_defgv) = newSV (0); 1025 GvSV (PL_defgv) = newSV (0);
866 GvAV (PL_defgv) = coro->args; coro->args = 0; 1026 GvAV (PL_defgv) = coro->args; coro->args = 0;
867 GvSV (PL_errgv) = newSV (0); 1027 GvSV (PL_errgv) = newSV (0);
868 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1028 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1029 GvHV (PL_hintgv) = 0;
869 PL_rs = newSVsv (GvSV (irsgv)); 1030 PL_rs = newSVsv (GvSV (irsgv));
870 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1031 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
871 1032
872 { 1033 {
873 dSP; 1034 dSP;
874 UNOP myop; 1035 UNOP myop;
875 1036
876 Zero (&myop, 1, UNOP); 1037 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 1038 myop.op_next = Nullop;
1039 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 1040 myop.op_flags = OPf_WANT_VOID;
879 1041
880 PUSHMARK (SP); 1042 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1043 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 1044 PUTBACK;
883 PL_op = (OP *)&myop; 1045 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1046 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 1047 }
887 1048
888 /* this newly created coroutine might be run on an existing cctx which most 1049 /* this newly created coroutine might be run on an existing cctx which most
889 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1050 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890 */ 1051 */
891 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1052 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1053 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
893}
894 1054
1055 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1056 init_perl_op.op_next = PL_op;
1057 init_perl_op.op_type = OP_ENTERSUB;
1058 init_perl_op.op_ppaddr = pp_slf;
1059 /* no flags etc. required, as an init function won't be called */
1060
1061 PL_op = (OP *)&init_perl_op;
1062
1063 /* copy throw, in case it was set before init_perl */
1064 CORO_THROW = coro->except;
1065
1066 SWAP_SVS (coro);
1067
1068 if (expect_false (enable_times))
1069 {
1070 coro_times_update ();
1071 coro_times_sub (coro);
1072 }
1073}
1074
895static void 1075static void
896coro_destruct (pTHX_ struct coro *coro) 1076coro_unwind_stacks (pTHX)
897{ 1077{
898 if (!IN_DESTRUCT) 1078 if (!IN_DESTRUCT)
899 { 1079 {
900 /* restore all saved variables and stuff */ 1080 /* restore all saved variables and stuff */
901 LEAVE_SCOPE (0); 1081 LEAVE_SCOPE (0);
… …
909 POPSTACK_TO (PL_mainstack); 1089 POPSTACK_TO (PL_mainstack);
910 1090
911 /* unwind main stack */ 1091 /* unwind main stack */
912 dounwind (-1); 1092 dounwind (-1);
913 } 1093 }
1094}
914 1095
915 SvREFCNT_dec (GvSV (PL_defgv)); 1096static void
916 SvREFCNT_dec (GvAV (PL_defgv)); 1097destroy_perl (pTHX_ struct coro *coro)
917 SvREFCNT_dec (GvSV (PL_errgv)); 1098{
918 SvREFCNT_dec (PL_defoutgv); 1099 SV *svf [9];
919 SvREFCNT_dec (PL_rs);
920 SvREFCNT_dec (GvSV (irsgv));
921 1100
922 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook);
924 1101 {
1102 struct coro *current = SvSTATE_current;
1103
1104 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1105
1106 save_perl (aTHX_ current);
1107 load_perl (aTHX_ coro);
1108
1109 coro_unwind_stacks (aTHX);
1110 coro_destruct_stacks (aTHX);
1111
1112 /* restore swapped sv's */
1113 SWAP_SVS (coro);
1114
1115 // now save some sv's to be free'd later
1116 svf [0] = GvSV (PL_defgv);
1117 svf [1] = (SV *)GvAV (PL_defgv);
1118 svf [2] = GvSV (PL_errgv);
1119 svf [3] = (SV *)PL_defoutgv;
1120 svf [4] = PL_rs;
1121 svf [5] = GvSV (irsgv);
1122 svf [6] = (SV *)GvHV (PL_hintgv);
1123 svf [7] = PL_diehook;
1124 svf [8] = PL_warnhook;
1125 assert (9 == sizeof (svf) / sizeof (*svf));
1126
1127 load_perl (aTHX_ current);
1128 }
1129
1130 {
1131 unsigned int i;
1132
1133 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1134 SvREFCNT_dec (svf [i]);
1135
925 SvREFCNT_dec (coro->saved_deffh); 1136 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 1137 SvREFCNT_dec (coro->rouse_cb);
927 1138 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1139 SvREFCNT_dec (coro->invoke_av);
1140 }
929} 1141}
930 1142
931INLINE void 1143INLINE void
932free_coro_mortal (pTHX) 1144free_coro_mortal (pTHX)
933{ 1145{
… …
941static int 1153static int
942runops_trace (pTHX) 1154runops_trace (pTHX)
943{ 1155{
944 COP *oldcop = 0; 1156 COP *oldcop = 0;
945 int oldcxix = -2; 1157 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1158
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1159 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1160 {
951 PERL_ASYNC_CHECK (); 1161 PERL_ASYNC_CHECK ();
952 1162
953 if (cctx->flags & CC_TRACE_ALL) 1163 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1164 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1165 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1166 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1167 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1168 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1169 AV *av = newAV (); /* return values */
960 SV **cb; 1170 SV **cb;
… …
997 1207
998 if (PL_curcop != &PL_compiling) 1208 if (PL_curcop != &PL_compiling)
999 { 1209 {
1000 SV **cb; 1210 SV **cb;
1001 1211
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1212 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1213 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1214 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1215
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1216 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1217 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1218 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1219 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1220 SV *fullname = sv_2mortal (newSV (0));
1012 1221
1013 if (isGV (gv)) 1222 if (isGV (gv))
… …
1018 SAVETMPS; 1227 SAVETMPS;
1019 EXTEND (SP, 3); 1228 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1229 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1230 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1231 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1232 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1233 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1234 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1235 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1236 SPAGAIN;
1028 FREETMPS; 1237 FREETMPS;
… …
1031 } 1240 }
1032 1241
1033 oldcxix = cxstack_ix; 1242 oldcxix = cxstack_ix;
1034 } 1243 }
1035 1244
1036 if (cctx->flags & CC_TRACE_LINE) 1245 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1246 {
1038 dSP; 1247 dSP;
1039 1248
1040 PL_runops = RUNOPS_DEFAULT; 1249 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1250 ENTER;
… …
1060 1269
1061 TAINT_NOT; 1270 TAINT_NOT;
1062 return 0; 1271 return 0;
1063} 1272}
1064 1273
1274static struct CoroSLF cctx_ssl_frame;
1275
1065static void 1276static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1277slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1278{
1068 ta->prev = (struct coro *)cctx;
1069 ta->next = 0; 1279 ta->prev = 0;
1070} 1280}
1071 1281
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1282static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1283slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1284{
1075/* also initialises PL_top_env */ 1285 *frame = cctx_ssl_frame;
1286
1287 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1288}
1289
1290/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1291static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1292cctx_prepare (pTHX)
1078{ 1293{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1294 PL_top_env = &PL_start_env;
1083 1295
1084 if (cctx->flags & CC_TRACE) 1296 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1297 PL_runops = runops_trace;
1086 1298
1087 Zero (&myop, 1, UNOP); 1299 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1300 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1301 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1302 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1303
1091 PUSHMARK (SP); 1304 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1305 cctx_ssl_frame = slf_frame;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1306
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1307 slf_frame.prepare = slf_prepare_set_stacklevel;
1095 PUTBACK; 1308 slf_frame.check = slf_check_set_stacklevel;
1096 PL_op = (OP *)&myop;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1309}
1100 1310
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1311/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1312INLINE void
1103transfer_tail (pTHX) 1313transfer_tail (pTHX)
1104{ 1314{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1315 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1316}
1121 1317
1122/* 1318/*
1123 * this is a _very_ stripped down perl interpreter ;) 1319 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1320 */
… …
1136 /* normally we would need to skip the entersub here */ 1332 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1333 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1334 /* PL_nop = PL_nop->op_next */
1139 1335
1140 /* inject a fake subroutine call to cctx_init */ 1336 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1337 cctx_prepare (aTHX);
1142 1338
1143 /* cctx_run is the alternative tail of transfer() */ 1339 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1340 transfer_tail (aTHX);
1146 1341
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1342 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1343 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1344 perl_run (PL_curinterp);
1345 /*
1346 * Unfortunately, there is no way to get at the return values of the
1347 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1348 * runtime errors here, as this is just a random interpreter, not a thread.
1349 */
1150 1350
1151 /* 1351 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1352 * 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) 1353 * 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 1354 * 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" 1355 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1356 * coroutine as Coro has no such concept.
1357 * This actually isn't valid with the pthread backend, but OSes requiring
1358 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1359 */
1158 PL_top_env = main_top_env; 1360 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1361 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1362 }
1161} 1363}
… …
1238cctx_destroy (coro_cctx *cctx) 1440cctx_destroy (coro_cctx *cctx)
1239{ 1441{
1240 if (!cctx) 1442 if (!cctx)
1241 return; 1443 return;
1242 1444
1445 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1446
1243 --cctx_count; 1447 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1448 coro_destroy (&cctx->cctx);
1245 1449
1246 /* coro_transfer creates new, empty cctx's */ 1450 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1451 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1509/** coroutine switching *****************************************************/
1306 1510
1307static void 1511static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1512transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1513{
1514 /* TODO: throwing up here is considered harmful */
1515
1310 if (expect_true (prev != next)) 1516 if (expect_true (prev != next))
1311 { 1517 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1518 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"); 1519 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1520
1315 if (expect_false (next->flags & CF_RUNNING))
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)) 1521 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1522 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1523
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1524#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1525 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"); 1526 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1527#endif
1325 } 1528 }
1326} 1529}
1327 1530
1328/* always use the TRANSFER macro */ 1531/* always use the TRANSFER macro */
1329static void NOINLINE 1532static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1533transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1534{
1332 dSTACKLEVEL; 1535 dSTACKLEVEL;
1333 1536
1334 /* sometimes transfer is only called to set idle_sp */ 1537 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1538 if (expect_false (!prev))
1336 { 1539 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1540 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1541 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1542 }
1340 else if (expect_true (prev != next)) 1543 else if (expect_true (prev != next))
1341 { 1544 {
1342 coro_cctx *prev__cctx; 1545 coro_cctx *cctx_prev;
1343 1546
1344 if (expect_false (prev->flags & CF_NEW)) 1547 if (expect_false (prev->flags & CF_NEW))
1345 { 1548 {
1346 /* create a new empty/source context */ 1549 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1550 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1551 prev->flags |= CF_RUNNING;
1350 } 1552 }
1351 1553
1352 prev->flags &= ~CF_RUNNING; 1554 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1555 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1556
1357 /* first get rid of the old state */ 1557 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1558 save_perl (aTHX_ prev);
1359 1559
1360 if (expect_false (next->flags & CF_NEW)) 1560 if (expect_false (next->flags & CF_NEW))
1361 { 1561 {
1362 /* need to start coroutine */ 1562 /* need to start coroutine */
1363 next->flags &= ~CF_NEW; 1563 next->flags &= ~CF_NEW;
1364 /* setup coroutine call */ 1564 /* setup coroutine call */
1365 coro_setup (aTHX_ next); 1565 init_perl (aTHX_ next);
1366 } 1566 }
1367 else 1567 else
1368 load_perl (aTHX_ next); 1568 load_perl (aTHX_ next);
1369 1569
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1570 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1571 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1572 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1573 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1574 && !force_cctx
1377 )) 1575 ))
1378 { 1576 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1577 /* 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)); 1578 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1579
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 */ 1580 /* 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 */ 1581 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1582 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1583 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1584 next->cctx = cctx_get (aTHX);
1389 1585
1390 cctx_put (prev__cctx); 1586 cctx_put (cctx_current);
1391 } 1587 }
1588 else
1589 prev->cctx = cctx_current;
1392 1590
1393 ++next->usecount; 1591 ++next->usecount;
1394 1592
1395 if (expect_true (!next->cctx)) 1593 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1594 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1595
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1596 next->cctx = 0;
1399 transfer_next = next;
1400 1597
1401 if (expect_false (prev__cctx != next->cctx)) 1598 if (expect_false (cctx_prev != cctx_current))
1402 { 1599 {
1403 prev__cctx->top_env = PL_top_env; 1600 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1601 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1602 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1603 }
1407 1604
1408 transfer_tail (aTHX); 1605 transfer_tail (aTHX);
1409 } 1606 }
1410} 1607}
… …
1417static int 1614static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1615coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1616{
1420 if (coro->flags & CF_DESTROYED) 1617 if (coro->flags & CF_DESTROYED)
1421 return 0; 1618 return 0;
1619
1620 if (coro->on_destroy && !PL_dirty)
1621 coro->on_destroy (aTHX_ coro);
1422 1622
1423 coro->flags |= CF_DESTROYED; 1623 coro->flags |= CF_DESTROYED;
1424 1624
1425 if (coro->flags & CF_READY) 1625 if (coro->flags & CF_READY)
1426 { 1626 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1627 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1628 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1629 --coro_nready;
1431 UNLOCK;
1432 } 1630 }
1433 else 1631 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1632 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1633
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1634 if (coro->mainstack
1437 { 1635 && coro->mainstack != main_mainstack
1438 struct coro temp; 1636 && coro->slot
1439 1637 && !PL_dirty)
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); 1638 destroy_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 1639
1456 if (coro->next) coro->next->prev = coro->prev; 1640 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1641 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1642 if (coro == coro_first) coro_first = coro->next;
1643
1644 cctx_destroy (coro->cctx);
1645 SvREFCNT_dec (coro->startcv);
1646 SvREFCNT_dec (coro->args);
1647 SvREFCNT_dec (coro->swap_sv);
1648 SvREFCNT_dec (CORO_THROW);
1459 1649
1460 return 1; 1650 return 1;
1461} 1651}
1462 1652
1463static int 1653static int
… …
1515 TRANSFER (ta, 1); 1705 TRANSFER (ta, 1);
1516} 1706}
1517 1707
1518/** Coro ********************************************************************/ 1708/** Coro ********************************************************************/
1519 1709
1520static void 1710INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1711coro_enq (pTHX_ struct coro *coro)
1522{ 1712{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1713 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1714
1526static SV * 1715 SvREFCNT_inc_NN (coro->hv);
1716
1717 coro->next_ready = 0;
1718 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1719 ready [1] = coro;
1720}
1721
1722INLINE struct coro *
1527coro_deq (pTHX) 1723coro_deq (pTHX)
1528{ 1724{
1529 int prio; 1725 int prio;
1530 1726
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1727 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1728 {
1533 return av_shift (coro_ready [prio]); 1729 struct coro **ready = coro_ready [prio];
1730
1731 if (ready [0])
1732 {
1733 struct coro *coro = ready [0];
1734 ready [0] = coro->next_ready;
1735 return coro;
1736 }
1737 }
1534 1738
1535 return 0; 1739 return 0;
1740}
1741
1742static void
1743invoke_sv_ready_hook_helper (void)
1744{
1745 dTHX;
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1536} 1757}
1537 1758
1538static int 1759static int
1539api_ready (pTHX_ SV *coro_sv) 1760api_ready (pTHX_ SV *coro_sv)
1540{ 1761{
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); 1762 struct coro *coro = SvSTATE (coro_sv);
1549 1763
1550 if (coro->flags & CF_READY) 1764 if (coro->flags & CF_READY)
1551 return 0; 1765 return 0;
1552 1766
1553 coro->flags |= CF_READY; 1767 coro->flags |= CF_READY;
1554 1768
1555 LOCK; 1769 coro_enq (aTHX_ coro);
1556 1770
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1771 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1772 if (coroapi.readyhook)
1559 1773 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 1774
1584 return 1; 1775 return 1;
1585} 1776}
1586 1777
1587static int 1778static int
1588api_is_ready (pTHX_ SV *coro_sv) 1779api_is_ready (pTHX_ SV *coro_sv)
1589{ 1780{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1781 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1782}
1592 1783
1784/* expects to own a reference to next->hv */
1593INLINE void 1785INLINE void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1786prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1787{
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); 1788 SV *prev_sv = SvRV (coro_current);
1789
1640 ta->prev = SvSTATE (prev_sv); 1790 ta->prev = SvSTATE_hv (prev_sv);
1791 ta->next = next;
1792
1641 TRANSFER_CHECK (*ta); 1793 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1794
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1795 SvRV_set (coro_current, (SV *)next->hv);
1645 1796
1646 LOCK;
1647 free_coro_mortal (aTHX); 1797 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1798 coro_mortal = prev_sv;
1649 UNLOCK; 1799}
1800
1801static void
1802prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1803{
1804 for (;;)
1805 {
1806 struct coro *next = coro_deq (aTHX);
1807
1808 if (expect_true (next))
1809 {
1810 /* cannot transfer to destroyed coros, skip and look for next */
1811 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1812 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1813 else
1814 {
1815 next->flags &= ~CF_READY;
1816 --coro_nready;
1817
1818 prepare_schedule_to (aTHX_ ta, next);
1819 break;
1820 }
1821 }
1822 else
1823 {
1824 /* nothing to schedule: call the idle handler */
1825 if (SvROK (sv_idle)
1826 && SvOBJECT (SvRV (sv_idle)))
1827 {
1828 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1829 api_ready (aTHX_ SvRV (sv_idle));
1830 --coro_nready;
1831 }
1832 else
1833 {
1834 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1835 dSP;
1836
1837 ENTER;
1838 SAVETMPS;
1839
1840 PUSHMARK (SP);
1841 PUTBACK;
1842 call_sv (sv_idle, G_VOID | G_DISCARD);
1843
1844 FREETMPS;
1845 LEAVE;
1846 }
1847 }
1848 }
1650} 1849}
1651 1850
1652INLINE void 1851INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1852prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1853{
… …
1675{ 1874{
1676 struct coro_transfer_args ta; 1875 struct coro_transfer_args ta;
1677 1876
1678 prepare_schedule (aTHX_ &ta); 1877 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1878 TRANSFER (ta, 1);
1879}
1880
1881static void
1882api_schedule_to (pTHX_ SV *coro_sv)
1883{
1884 struct coro_transfer_args ta;
1885 struct coro *next = SvSTATE (coro_sv);
1886
1887 SvREFCNT_inc_NN (coro_sv);
1888 prepare_schedule_to (aTHX_ &ta, next);
1680} 1889}
1681 1890
1682static int 1891static int
1683api_cede (pTHX) 1892api_cede (pTHX)
1684{ 1893{
… …
1713static void 1922static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1923api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1924{
1716 struct coro *coro = SvSTATE (coro_sv); 1925 struct coro *coro = SvSTATE (coro_sv);
1717 1926
1927 if (coro->flags & CF_RUNNING)
1928 croak ("cannot enable tracing on a running coroutine, caught");
1929
1718 if (flags & CC_TRACE) 1930 if (flags & CC_TRACE)
1719 { 1931 {
1720 if (!coro->cctx) 1932 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1933 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1934 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1935 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1936
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1937 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1938 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1939 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1940 {
… …
1733 else 1945 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1946 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1947 }
1736} 1948}
1737 1949
1738#if 0 1950static void
1951coro_call_on_destroy (pTHX_ struct coro *coro)
1952{
1953 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1954 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1955
1956 if (on_destroyp)
1957 {
1958 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1959
1960 while (AvFILLp (on_destroy) >= 0)
1961 {
1962 dSP; /* don't disturb outer sp */
1963 SV *cb = av_pop (on_destroy);
1964
1965 PUSHMARK (SP);
1966
1967 if (statusp)
1968 {
1969 int i;
1970 AV *status = (AV *)SvRV (*statusp);
1971 EXTEND (SP, AvFILLp (status) + 1);
1972
1973 for (i = 0; i <= AvFILLp (status); ++i)
1974 PUSHs (AvARRAY (status)[i]);
1975 }
1976
1977 PUTBACK;
1978 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1979 }
1980 }
1981}
1982
1983static void
1984slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1985{
1986 int i;
1987 HV *hv = (HV *)SvRV (coro_current);
1988 AV *av = newAV ();
1989
1990 /* items are actually not so common, so optimise for this case */
1991 if (items)
1992 {
1993 av_extend (av, items - 1);
1994
1995 for (i = 0; i < items; ++i)
1996 av_push (av, SvREFCNT_inc_NN (arg [i]));
1997 }
1998
1999 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2000
2001 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2002 api_ready (aTHX_ sv_manager);
2003
2004 frame->prepare = prepare_schedule;
2005 frame->check = slf_check_repeat;
2006
2007 /* as a minor optimisation, we could unwind all stacks here */
2008 /* but that puts extra pressure on pp_slf, and is not worth much */
2009 /*coro_unwind_stacks (aTHX);*/
2010}
2011
2012/*****************************************************************************/
2013/* async pool handler */
2014
1739static int 2015static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2016slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 2017{
1742 AV *padlist; 2018 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 2019 struct coro *coro = (struct coro *)frame->data;
1744 2020
1745 abort (); 2021 if (!coro->invoke_cb)
2022 return 1; /* loop till we have invoke */
2023 else
2024 {
2025 hv_store (hv, "desc", sizeof ("desc") - 1,
2026 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2027
2028 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2029
2030 {
2031 dSP;
2032 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2033 PUTBACK;
2034 }
2035
2036 SvREFCNT_dec (GvAV (PL_defgv));
2037 GvAV (PL_defgv) = coro->invoke_av;
2038 coro->invoke_av = 0;
2039
2040 return 0;
2041 }
2042}
2043
2044static void
2045slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2046{
2047 HV *hv = (HV *)SvRV (coro_current);
2048 struct coro *coro = SvSTATE_hv ((SV *)hv);
2049
2050 if (expect_true (coro->saved_deffh))
2051 {
2052 /* subsequent iteration */
2053 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2054 coro->saved_deffh = 0;
2055
2056 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2057 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2058 {
2059 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2060 coro->invoke_av = newAV ();
2061
2062 frame->prepare = prepare_nop;
2063 }
2064 else
2065 {
2066 av_clear (GvAV (PL_defgv));
2067 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2068
2069 coro->prio = 0;
2070
2071 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2072 api_trace (aTHX_ coro_current, 0);
2073
2074 frame->prepare = prepare_schedule;
2075 av_push (av_async_pool, SvREFCNT_inc (hv));
2076 }
2077 }
2078 else
2079 {
2080 /* first iteration, simply fall through */
2081 frame->prepare = prepare_nop;
2082 }
2083
2084 frame->check = slf_check_pool_handler;
2085 frame->data = (void *)coro;
2086}
2087
2088/*****************************************************************************/
2089/* rouse callback */
2090
2091#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2092
2093static void
2094coro_rouse_callback (pTHX_ CV *cv)
2095{
2096 dXSARGS;
2097 SV *data = (SV *)S_GENSUB_ARG;
2098
2099 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2100 {
2101 /* first call, set args */
2102 SV *coro = SvRV (data);
2103 AV *av = newAV ();
2104
2105 SvRV_set (data, (SV *)av);
2106
2107 /* better take a full copy of the arguments */
2108 while (items--)
2109 av_store (av, items, newSVsv (ST (items)));
2110
2111 api_ready (aTHX_ coro);
2112 SvREFCNT_dec (coro);
2113 }
2114
2115 XSRETURN_EMPTY;
2116}
2117
2118static int
2119slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2120{
2121 SV *data = (SV *)frame->data;
2122
2123 if (CORO_THROW)
2124 return 0;
2125
2126 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2127 return 1;
2128
2129 /* now push all results on the stack */
2130 {
2131 dSP;
2132 AV *av = (AV *)SvRV (data);
2133 int i;
2134
2135 EXTEND (SP, AvFILLp (av) + 1);
2136 for (i = 0; i <= AvFILLp (av); ++i)
2137 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2138
2139 /* we have stolen the elements, so set length to zero and free */
2140 AvFILLp (av) = -1;
2141 av_undef (av);
2142
2143 PUTBACK;
2144 }
1746 2145
1747 return 0; 2146 return 0;
1748} 2147}
1749 2148
1750static MGVTBL coro_gensub_vtbl = { 2149static void
1751 0, 0, 0, 0, 2150slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2151{
1753}; 2152 SV *cb;
1754#endif 2153
2154 if (items)
2155 cb = arg [0];
2156 else
2157 {
2158 struct coro *coro = SvSTATE_current;
2159
2160 if (!coro->rouse_cb)
2161 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2162
2163 cb = sv_2mortal (coro->rouse_cb);
2164 coro->rouse_cb = 0;
2165 }
2166
2167 if (!SvROK (cb)
2168 || SvTYPE (SvRV (cb)) != SVt_PVCV
2169 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2170 croak ("Coro::rouse_wait called with illegal callback argument,");
2171
2172 {
2173 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2174 SV *data = (SV *)S_GENSUB_ARG;
2175
2176 frame->data = (void *)data;
2177 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2178 frame->check = slf_check_rouse_wait;
2179 }
2180}
2181
2182static SV *
2183coro_new_rouse_cb (pTHX)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv (hv);
2187 SV *data = newRV_inc ((SV *)hv);
2188 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2189
2190 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2191 SvREFCNT_dec (data); /* magicext increases the refcount */
2192
2193 SvREFCNT_dec (coro->rouse_cb);
2194 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2195
2196 return cb;
2197}
2198
2199/*****************************************************************************/
2200/* schedule-like-function opcode (SLF) */
2201
2202static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2203static const CV *slf_cv;
2204static SV **slf_argv;
2205static int slf_argc, slf_arga; /* count, allocated */
2206static I32 slf_ax; /* top of stack, for restore */
2207
2208/* this restores the stack in the case we patched the entersub, to */
2209/* recreate the stack frame as perl will on following calls */
2210/* since entersub cleared the stack */
2211static OP *
2212pp_restore (pTHX)
2213{
2214 int i;
2215 SV **SP = PL_stack_base + slf_ax;
2216
2217 PUSHMARK (SP);
2218
2219 EXTEND (SP, slf_argc + 1);
2220
2221 for (i = 0; i < slf_argc; ++i)
2222 PUSHs (sv_2mortal (slf_argv [i]));
2223
2224 PUSHs ((SV *)CvGV (slf_cv));
2225
2226 RETURNOP (slf_restore.op_first);
2227}
2228
2229static void
2230slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2231{
2232 SV **arg = (SV **)slf_frame.data;
2233
2234 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2235}
2236
2237static void
2238slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 if (items != 2)
2241 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2242
2243 frame->prepare = slf_prepare_transfer;
2244 frame->check = slf_check_nop;
2245 frame->data = (void *)arg; /* let's hope it will stay valid */
2246}
2247
2248static void
2249slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2250{
2251 frame->prepare = prepare_schedule;
2252 frame->check = slf_check_nop;
2253}
2254
2255static void
2256slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2257{
2258 struct coro *next = (struct coro *)slf_frame.data;
2259
2260 SvREFCNT_inc_NN (next->hv);
2261 prepare_schedule_to (aTHX_ ta, next);
2262}
2263
2264static void
2265slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2266{
2267 if (!items)
2268 croak ("Coro::schedule_to expects a coroutine argument, caught");
2269
2270 frame->data = (void *)SvSTATE (arg [0]);
2271 frame->prepare = slf_prepare_schedule_to;
2272 frame->check = slf_check_nop;
2273}
2274
2275static void
2276slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2277{
2278 api_ready (aTHX_ SvRV (coro_current));
2279
2280 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2281}
2282
2283static void
2284slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2285{
2286 frame->prepare = prepare_cede;
2287 frame->check = slf_check_nop;
2288}
2289
2290static void
2291slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 frame->prepare = prepare_cede_notself;
2294 frame->check = slf_check_nop;
2295}
2296
2297/*
2298 * these not obviously related functions are all rolled into one
2299 * function to increase chances that they all will call transfer with the same
2300 * stack offset
2301 * SLF stands for "schedule-like-function".
2302 */
2303static OP *
2304pp_slf (pTHX)
2305{
2306 I32 checkmark; /* mark SP to see how many elements check has pushed */
2307
2308 /* set up the slf frame, unless it has already been set-up */
2309 /* the latter happens when a new coro has been started */
2310 /* or when a new cctx was attached to an existing coroutine */
2311 if (expect_true (!slf_frame.prepare))
2312 {
2313 /* first iteration */
2314 dSP;
2315 SV **arg = PL_stack_base + TOPMARK + 1;
2316 int items = SP - arg; /* args without function object */
2317 SV *gv = *sp;
2318
2319 /* do a quick consistency check on the "function" object, and if it isn't */
2320 /* for us, divert to the real entersub */
2321 if (SvTYPE (gv) != SVt_PVGV
2322 || !GvCV (gv)
2323 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2324 return PL_ppaddr[OP_ENTERSUB](aTHX);
2325
2326 if (!(PL_op->op_flags & OPf_STACKED))
2327 {
2328 /* ampersand-form of call, use @_ instead of stack */
2329 AV *av = GvAV (PL_defgv);
2330 arg = AvARRAY (av);
2331 items = AvFILLp (av) + 1;
2332 }
2333
2334 /* now call the init function, which needs to set up slf_frame */
2335 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2336 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2337
2338 /* pop args */
2339 SP = PL_stack_base + POPMARK;
2340
2341 PUTBACK;
2342 }
2343
2344 /* now that we have a slf_frame, interpret it! */
2345 /* we use a callback system not to make the code needlessly */
2346 /* complicated, but so we can run multiple perl coros from one cctx */
2347
2348 do
2349 {
2350 struct coro_transfer_args ta;
2351
2352 slf_frame.prepare (aTHX_ &ta);
2353 TRANSFER (ta, 0);
2354
2355 checkmark = PL_stack_sp - PL_stack_base;
2356 }
2357 while (slf_frame.check (aTHX_ &slf_frame));
2358
2359 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2360
2361 /* exception handling */
2362 if (expect_false (CORO_THROW))
2363 {
2364 SV *exception = sv_2mortal (CORO_THROW);
2365
2366 CORO_THROW = 0;
2367 sv_setsv (ERRSV, exception);
2368 croak (0);
2369 }
2370
2371 /* return value handling - mostly like entersub */
2372 /* make sure we put something on the stack in scalar context */
2373 if (GIMME_V == G_SCALAR)
2374 {
2375 dSP;
2376 SV **bot = PL_stack_base + checkmark;
2377
2378 if (sp == bot) /* too few, push undef */
2379 bot [1] = &PL_sv_undef;
2380 else if (sp != bot + 1) /* too many, take last one */
2381 bot [1] = *sp;
2382
2383 SP = bot + 1;
2384
2385 PUTBACK;
2386 }
2387
2388 return NORMAL;
2389}
2390
2391static void
2392api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2393{
2394 int i;
2395 SV **arg = PL_stack_base + ax;
2396 int items = PL_stack_sp - arg + 1;
2397
2398 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2399
2400 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2401 && PL_op->op_ppaddr != pp_slf)
2402 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2403
2404 CvFLAGS (cv) |= CVf_SLF;
2405 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2406 slf_cv = cv;
2407
2408 /* we patch the op, and then re-run the whole call */
2409 /* we have to put the same argument on the stack for this to work */
2410 /* and this will be done by pp_restore */
2411 slf_restore.op_next = (OP *)&slf_restore;
2412 slf_restore.op_type = OP_CUSTOM;
2413 slf_restore.op_ppaddr = pp_restore;
2414 slf_restore.op_first = PL_op;
2415
2416 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2417
2418 if (PL_op->op_flags & OPf_STACKED)
2419 {
2420 if (items > slf_arga)
2421 {
2422 slf_arga = items;
2423 free (slf_argv);
2424 slf_argv = malloc (slf_arga * sizeof (SV *));
2425 }
2426
2427 slf_argc = items;
2428
2429 for (i = 0; i < items; ++i)
2430 slf_argv [i] = SvREFCNT_inc (arg [i]);
2431 }
2432 else
2433 slf_argc = 0;
2434
2435 PL_op->op_ppaddr = pp_slf;
2436 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2437
2438 PL_op = (OP *)&slf_restore;
2439}
2440
2441/*****************************************************************************/
2442/* dynamic wind */
2443
2444static void
2445on_enterleave_call (pTHX_ SV *cb)
2446{
2447 dSP;
2448
2449 PUSHSTACK;
2450
2451 PUSHMARK (SP);
2452 PUTBACK;
2453 call_sv (cb, G_VOID | G_DISCARD);
2454 SPAGAIN;
2455
2456 POPSTACK;
2457}
2458
2459static SV *
2460coro_avp_pop_and_free (pTHX_ AV **avp)
2461{
2462 AV *av = *avp;
2463 SV *res = av_pop (av);
2464
2465 if (AvFILLp (av) < 0)
2466 {
2467 *avp = 0;
2468 SvREFCNT_dec (av);
2469 }
2470
2471 return res;
2472}
2473
2474static void
2475coro_pop_on_enter (pTHX_ void *coro)
2476{
2477 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2478 SvREFCNT_dec (cb);
2479}
2480
2481static void
2482coro_pop_on_leave (pTHX_ void *coro)
2483{
2484 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2485 on_enterleave_call (aTHX_ sv_2mortal (cb));
2486}
1755 2487
1756/*****************************************************************************/ 2488/*****************************************************************************/
1757/* PerlIO::cede */ 2489/* PerlIO::cede */
1758 2490
1759typedef struct 2491typedef struct
… …
1827 PerlIOBuf_get_cnt, 2559 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2560 PerlIOBuf_set_ptrcnt,
1829}; 2561};
1830 2562
1831/*****************************************************************************/ 2563/*****************************************************************************/
2564/* Coro::Semaphore & Coro::Signal */
1832 2565
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 * 2566static SV *
1843pp_restore (pTHX) 2567coro_waitarray_new (pTHX_ int count)
1844{ 2568{
1845 dSP; 2569 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2570 AV *av = newAV ();
2571 SV **ary;
1846 2572
1847 PUSHMARK (SP); 2573 /* unfortunately, building manually saves memory */
2574 Newx (ary, 2, SV *);
2575 AvALLOC (av) = ary;
2576#if PERL_VERSION_ATLEAST (5,10,0)
2577 AvARRAY (av) = ary;
2578#else
2579 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2580 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2581 SvPVX ((SV *)av) = (char *)ary;
2582#endif
2583 AvMAX (av) = 1;
2584 AvFILLp (av) = 0;
2585 ary [0] = newSViv (count);
1848 2586
1849 EXTEND (SP, 3); 2587 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2588}
1856 2589
1857static void 2590/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2591
1864static void 2592static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2593coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2594{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2595 SV *count_sv = AvARRAY (av)[0];
1868} 2596 IV count = SvIVX (count_sv);
1869 2597
1870static void 2598 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2599 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2600
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2601 /* now wake up as many waiters as are expected to lock */
1877} 2602 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2603 {
1912 /* first iteration */ 2604 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2605
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2606 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2607 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2608 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2609 cb = av_shift (av);
1923 2610
1924 /* pop args */ 2611 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2612 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2613 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2614 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2615 }
1934 2616 else if (SvTYPE (cb) == SVt_PVCV)
2617 {
2618 dSP;
2619 PUSHMARK (SP);
2620 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2621 PUTBACK;
2622 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2623 }
1936 2624
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2625 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2626 }
1949 struct coro_transfer_args ta; 2627}
1950 2628
1951 slf_frame.prepare (aTHX_ &ta); 2629static void
1952 TRANSFER (ta, 0); 2630coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2631{
2632 /* call $sem->adjust (0) to possibly wake up some other waiters */
2633 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2634}
1953 2635
1954 checkmark = PL_stack_sp - PL_stack_base; 2636static int
2637slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2638{
2639 AV *av = (AV *)frame->data;
2640 SV *count_sv = AvARRAY (av)[0];
2641
2642 /* if we are about to throw, don't actually acquire the lock, just throw */
2643 if (CORO_THROW)
2644 return 0;
2645 else if (SvIVX (count_sv) > 0)
1955 } 2646 {
1956 while (slf_frame.check (aTHX)); 2647 SvSTATE_current->on_destroy = 0;
1957 2648
2649 if (acquire)
2650 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2651 else
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2654 return 0;
2655 }
2656 else
2657 {
2658 int i;
2659 /* if we were woken up but can't down, we look through the whole */
2660 /* waiters list and only add us if we aren't in there already */
2661 /* this avoids some degenerate memory usage cases */
2662
2663 for (i = 1; i <= AvFILLp (av); ++i)
2664 if (AvARRAY (av)[i] == SvRV (coro_current))
2665 return 1;
2666
2667 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2668 return 1;
2669 }
2670}
2671
2672static int
2673slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2674{
2675 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2676}
2677
2678static int
2679slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2682}
2683
2684static void
2685slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *av = (AV *)SvRV (arg [0]);
2688
2689 if (SvIVX (AvARRAY (av)[0]) > 0)
2690 {
2691 frame->data = (void *)av;
2692 frame->prepare = prepare_nop;
2693 }
2694 else
2695 {
2696 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2697
2698 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2699 frame->prepare = prepare_schedule;
2700
2701 /* to avoid race conditions when a woken-up coro gets terminated */
2702 /* we arrange for a temporary on_destroy that calls adjust (0) */
2703 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2704 }
2705}
2706
2707static void
2708slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2711 frame->check = slf_check_semaphore_down;
2712}
2713
2714static void
2715slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 if (items >= 2)
2718 {
2719 /* callback form */
2720 AV *av = (AV *)SvRV (arg [0]);
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]) > 0)
2726 coro_semaphore_adjust (aTHX_ av, 0);
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2734 frame->check = slf_check_semaphore_wait;
2735 }
2736}
2737
2738/* signal */
2739
2740static void
2741coro_signal_wake (pTHX_ AV *av, int count)
2742{
2743 SvIVX (AvARRAY (av)[0]) = 0;
2744
2745 /* now signal count waiters */
2746 while (count > 0 && AvFILLp (av) > 0)
2747 {
2748 SV *cb;
2749
2750 /* swap first two elements so we can shift a waiter */
2751 cb = AvARRAY (av)[0];
2752 AvARRAY (av)[0] = AvARRAY (av)[1];
2753 AvARRAY (av)[1] = cb;
2754
2755 cb = av_shift (av);
2756
2757 if (SvTYPE (cb) == SVt_PVCV)
2758 {
2759 dSP;
2760 PUSHMARK (SP);
2761 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2762 PUTBACK;
2763 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2764 }
2765 else
2766 {
2767 api_ready (aTHX_ cb);
2768 sv_setiv (cb, 0); /* signal waiter */
2769 }
2770
2771 SvREFCNT_dec (cb);
2772
2773 --count;
2774 }
2775}
2776
2777static int
2778slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2779{
2780 /* if we are about to throw, also stop waiting */
2781 return SvROK ((SV *)frame->data) && !CORO_THROW;
2782}
2783
2784static void
2785slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2786{
2787 AV *av = (AV *)SvRV (arg [0]);
2788
2789 if (items >= 2)
2790 {
2791 SV *cb_cv = s_get_cv_croak (arg [1]);
2792 av_push (av, SvREFCNT_inc_NN (cb_cv));
2793
2794 if (SvIVX (AvARRAY (av)[0]))
2795 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2796
2797 frame->prepare = prepare_nop;
2798 frame->check = slf_check_nop;
2799 }
2800 else if (SvIVX (AvARRAY (av)[0]))
2801 {
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else
2807 {
2808 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2809
2810 av_push (av, waiter);
2811
2812 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2813 frame->prepare = prepare_schedule;
2814 frame->check = slf_check_signal_wait;
2815 }
2816}
2817
2818/*****************************************************************************/
2819/* Coro::AIO */
2820
2821#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2822
2823/* helper storage struct */
2824struct io_state
2825{
2826 int errorno;
2827 I32 laststype; /* U16 in 5.10.0 */
2828 int laststatval;
2829 Stat_t statcache;
2830};
2831
2832static void
2833coro_aio_callback (pTHX_ CV *cv)
2834{
2835 dXSARGS;
2836 AV *state = (AV *)S_GENSUB_ARG;
2837 SV *coro = av_pop (state);
2838 SV *data_sv = newSV (sizeof (struct io_state));
2839
2840 av_extend (state, items - 1);
2841
2842 sv_upgrade (data_sv, SVt_PV);
2843 SvCUR_set (data_sv, sizeof (struct io_state));
2844 SvPOK_only (data_sv);
2845
2846 {
2847 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2848
2849 data->errorno = errno;
2850 data->laststype = PL_laststype;
2851 data->laststatval = PL_laststatval;
2852 data->statcache = PL_statcache;
2853 }
2854
2855 /* now build the result vector out of all the parameters and the data_sv */
2856 {
2857 int i;
2858
2859 for (i = 0; i < items; ++i)
2860 av_push (state, SvREFCNT_inc_NN (ST (i)));
2861 }
2862
2863 av_push (state, data_sv);
2864
2865 api_ready (aTHX_ coro);
2866 SvREFCNT_dec (coro);
2867 SvREFCNT_dec ((AV *)state);
2868}
2869
2870static int
2871slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2872{
2873 AV *state = (AV *)frame->data;
2874
2875 /* if we are about to throw, return early */
2876 /* this does not cancel the aio request, but at least */
2877 /* it quickly returns */
2878 if (CORO_THROW)
2879 return 0;
2880
2881 /* one element that is an RV? repeat! */
2882 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2883 return 1;
2884
2885 /* restore status */
2886 {
2887 SV *data_sv = av_pop (state);
2888 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2889
2890 errno = data->errorno;
2891 PL_laststype = data->laststype;
2892 PL_laststatval = data->laststatval;
2893 PL_statcache = data->statcache;
2894
2895 SvREFCNT_dec (data_sv);
2896 }
2897
2898 /* push result values */
1958 { 2899 {
1959 dSP; 2900 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2901 int i;
1961 int gimme = GIMME_V;
1962 2902
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2903 EXTEND (SP, AvFILLp (state) + 1);
1964 2904 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2905 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2906
1974 PUTBACK; 2907 PUTBACK;
1975 } 2908 }
1976 2909
1977 return NORMAL; 2910 return 0;
1978} 2911}
1979 2912
1980static void 2913static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2914slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2915{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2916 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2917 SV *coro_hv = SvRV (coro_current);
2918 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2919
1986 if (items > 2) 2920 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2921 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2922
1989 CvFLAGS (cv) |= CVf_SLF; 2923 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2924 if (coro->prio)
1991 slf_cv = cv; 2925 {
2926 dSP;
1992 2927
1993 /* we patch the op, and then re-run the whole call */ 2928 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2929 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2930
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2931 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2932 {
2933 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2934 prio_sv = newSViv (0);
2935 }
2003 2936
2004 PL_op->op_ppaddr = pp_slf; 2937 PUSHMARK (SP);
2938 sv_setiv (prio_sv, coro->prio);
2939 XPUSHs (prio_sv);
2005 2940
2006 PL_op = (OP *)&slf_restore; 2941 PUTBACK;
2942 call_sv (prio_cv, G_VOID | G_DISCARD);
2943 }
2944
2945 /* now call the original request */
2946 {
2947 dSP;
2948 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2949 int i;
2950
2951 PUSHMARK (SP);
2952
2953 /* first push all args to the stack */
2954 EXTEND (SP, items + 1);
2955
2956 for (i = 0; i < items; ++i)
2957 PUSHs (arg [i]);
2958
2959 /* now push the callback closure */
2960 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2961
2962 /* now call the AIO function - we assume our request is uncancelable */
2963 PUTBACK;
2964 call_sv ((SV *)req, G_VOID | G_DISCARD);
2965 }
2966
2967 /* now that the requets is going, we loop toll we have a result */
2968 frame->data = (void *)state;
2969 frame->prepare = prepare_schedule;
2970 frame->check = slf_check_aio_req;
2971}
2972
2973static void
2974coro_aio_req_xs (pTHX_ CV *cv)
2975{
2976 dXSARGS;
2977
2978 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2979
2980 XSRETURN_EMPTY;
2981}
2982
2983/*****************************************************************************/
2984
2985#if CORO_CLONE
2986# include "clone.c"
2987#endif
2988
2989/*****************************************************************************/
2990
2991static SV *
2992coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2993{
2994 SV *coro_sv;
2995 struct coro *coro;
2996 MAGIC *mg;
2997 HV *hv;
2998 SV *cb;
2999 int i;
3000
3001 if (argc > 0)
3002 {
3003 cb = s_get_cv_croak (argv [0]);
3004
3005 if (!is_coro)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
3014
3015 Newz (0, coro, 1, struct coro);
3016 coro->args = newAV ();
3017 coro->flags = CF_NEW;
3018
3019 if (coro_first) coro_first->prev = coro;
3020 coro->next = coro_first;
3021 coro_first = coro;
3022
3023 coro->hv = hv = newHV ();
3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025 mg->mg_flags |= MGf_DUP;
3026 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3027
3028 if (argc > 0)
3029 {
3030 av_extend (coro->args, argc + is_coro - 1);
3031
3032 if (is_coro)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = (SV *)cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040 for (i = 1; i < argc; i++)
3041 av_push (coro->args, newSVsv (argv [i]));
3042 }
3043
3044 return coro_sv;
2007} 3045}
2008 3046
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3047MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 3048
2011PROTOTYPES: DISABLE 3049PROTOTYPES: DISABLE
2012 3050
2013BOOT: 3051BOOT:
2014{ 3052{
2015#ifdef USE_ITHREADS 3053#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 3054# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 3055 coro_thx = PERL_GET_CONTEXT;
2019# endif 3056# endif
2020#endif 3057#endif
2021 BOOT_PAGESIZE; 3058 BOOT_PAGESIZE;
2022 3059
3060 cctx_current = cctx_new_empty ();
3061
2023 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3062 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2024 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3063 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2025 3064
2026 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3065 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2027 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3066 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2042 main_top_env = PL_top_env; 3081 main_top_env = PL_top_env;
2043 3082
2044 while (main_top_env->je_prev) 3083 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 3084 main_top_env = main_top_env->je_prev;
2046 3085
3086 {
3087 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3088
3089 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3090 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3091
3092 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3093 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3094 }
3095
2047 coroapi.ver = CORO_API_VERSION; 3096 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 3097 coroapi.rev = CORO_API_REVISION;
3098
2049 coroapi.transfer = api_transfer; 3099 coroapi.transfer = api_transfer;
3100
3101 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 3102 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 3103 coroapi.prepare_nop = prepare_nop;
3104 coroapi.prepare_schedule = prepare_schedule;
3105 coroapi.prepare_cede = prepare_cede;
3106 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 3107
2053 { 3108 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3109 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 3110
2056 if (!svp) croak ("Time::HiRes is required"); 3111 if (!svp) croak ("Time::HiRes is required");
2057 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3112 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2058 3113
2059 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3114 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3115
3116 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3117 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2060 } 3118 }
2061 3119
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3120 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2063} 3121}
2064 3122
2065SV * 3123SV *
2066new (char *klass, ...) 3124new (SV *klass, ...)
3125 ALIAS:
3126 Coro::new = 1
2067 CODE: 3127 CODE:
2068{ 3128 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2069 struct coro *coro; 3129 OUTPUT:
2070 MAGIC *mg;
2071 HV *hv;
2072 int i;
2073
2074 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV ();
2076 coro->flags = CF_NEW;
2077
2078 if (coro_first) coro_first->prev = coro;
2079 coro->next = coro_first;
2080 coro_first = coro;
2081
2082 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086
2087 av_extend (coro->args, items - 1);
2088 for (i = 1; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i)));
2090}
2091 OUTPUT:
2092 RETVAL 3130 RETVAL
2093
2094void
2095_set_stacklevel (...)
2096 CODE:
2097{
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101 3131
2102void 3132void
2103transfer (...) 3133transfer (...)
3134 PROTOTYPE: $$
2104 CODE: 3135 CODE:
2105{ 3136 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 3137
2110bool 3138bool
2111_destroy (SV *coro_sv) 3139_destroy (SV *coro_sv)
2112 CODE: 3140 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3141 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2118_exit (int code) 3146_exit (int code)
2119 PROTOTYPE: $ 3147 PROTOTYPE: $
2120 CODE: 3148 CODE:
2121 _exit (code); 3149 _exit (code);
2122 3150
3151SV *
3152clone (Coro::State coro)
3153 CODE:
3154{
3155#if CORO_CLONE
3156 struct coro *ncoro = coro_clone (aTHX_ coro);
3157 MAGIC *mg;
3158 /* TODO: too much duplication */
3159 ncoro->hv = newHV ();
3160 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3161 mg->mg_flags |= MGf_DUP;
3162 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3163#else
3164 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3165#endif
3166}
3167 OUTPUT:
3168 RETVAL
3169
2123int 3170int
2124cctx_stacksize (int new_stacksize = 0) 3171cctx_stacksize (int new_stacksize = 0)
3172 PROTOTYPE: ;$
2125 CODE: 3173 CODE:
2126 RETVAL = cctx_stacksize; 3174 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 3175 if (new_stacksize)
2128 { 3176 {
2129 cctx_stacksize = new_stacksize; 3177 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 3180 OUTPUT:
2133 RETVAL 3181 RETVAL
2134 3182
2135int 3183int
2136cctx_max_idle (int max_idle = 0) 3184cctx_max_idle (int max_idle = 0)
3185 PROTOTYPE: ;$
2137 CODE: 3186 CODE:
2138 RETVAL = cctx_max_idle; 3187 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 3188 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 3189 cctx_max_idle = max_idle;
2141 OUTPUT: 3190 OUTPUT:
2142 RETVAL 3191 RETVAL
2143 3192
2144int 3193int
2145cctx_count () 3194cctx_count ()
3195 PROTOTYPE:
2146 CODE: 3196 CODE:
2147 RETVAL = cctx_count; 3197 RETVAL = cctx_count;
2148 OUTPUT: 3198 OUTPUT:
2149 RETVAL 3199 RETVAL
2150 3200
2151int 3201int
2152cctx_idle () 3202cctx_idle ()
3203 PROTOTYPE:
2153 CODE: 3204 CODE:
2154 RETVAL = cctx_idle; 3205 RETVAL = cctx_idle;
2155 OUTPUT: 3206 OUTPUT:
2156 RETVAL 3207 RETVAL
2157 3208
2158void 3209void
2159list () 3210list ()
3211 PROTOTYPE:
2160 PPCODE: 3212 PPCODE:
2161{ 3213{
2162 struct coro *coro; 3214 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 3215 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 3216 if (coro->hv)
… …
2171 eval = 1 3223 eval = 1
2172 CODE: 3224 CODE:
2173{ 3225{
2174 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3226 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2175 { 3227 {
2176 struct coro temp; 3228 struct coro *current = SvSTATE_current;
2177 3229
2178 if (!(coro->flags & CF_RUNNING)) 3230 if (current != coro)
2179 { 3231 {
2180 PUTBACK; 3232 PUTBACK;
2181 save_perl (aTHX_ &temp); 3233 save_perl (aTHX_ current);
2182 load_perl (aTHX_ coro); 3234 load_perl (aTHX_ coro);
3235 SPAGAIN;
2183 } 3236 }
2184 3237
2185 {
2186 dSP;
2187 ENTER;
2188 SAVETMPS;
2189 PUTBACK;
2190 PUSHSTACK; 3238 PUSHSTACK;
3239
2191 PUSHMARK (SP); 3240 PUSHMARK (SP);
3241 PUTBACK;
2192 3242
2193 if (ix) 3243 if (ix)
2194 eval_sv (coderef, 0); 3244 eval_sv (coderef, 0);
2195 else 3245 else
2196 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3246 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2197 3247
2198 POPSTACK; 3248 POPSTACK;
2199 SPAGAIN; 3249 SPAGAIN;
2200 FREETMPS;
2201 LEAVE;
2202 PUTBACK;
2203 }
2204 3250
2205 if (!(coro->flags & CF_RUNNING)) 3251 if (current != coro)
2206 { 3252 {
3253 PUTBACK;
2207 save_perl (aTHX_ coro); 3254 save_perl (aTHX_ coro);
2208 load_perl (aTHX_ &temp); 3255 load_perl (aTHX_ current);
2209 SPAGAIN; 3256 SPAGAIN;
2210 } 3257 }
2211 } 3258 }
2212} 3259}
2213 3260
… …
2217 ALIAS: 3264 ALIAS:
2218 is_ready = CF_READY 3265 is_ready = CF_READY
2219 is_running = CF_RUNNING 3266 is_running = CF_RUNNING
2220 is_new = CF_NEW 3267 is_new = CF_NEW
2221 is_destroyed = CF_DESTROYED 3268 is_destroyed = CF_DESTROYED
3269 is_suspended = CF_SUSPENDED
2222 CODE: 3270 CODE:
2223 RETVAL = boolSV (coro->flags & ix); 3271 RETVAL = boolSV (coro->flags & ix);
2224 OUTPUT: 3272 OUTPUT:
2225 RETVAL 3273 RETVAL
2226 3274
2227void 3275void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3276throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3277 PROTOTYPE: $;$
2230 CODE: 3278 CODE:
3279{
3280 struct coro *current = SvSTATE_current;
3281 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3282 SvREFCNT_dec (*throwp);
3283 SvGETMAGIC (throw);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3284 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3285}
2233 3286
2234void 3287void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3288api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3289 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3290 C_ARGS: aTHX_ coro, flags
2237 3291
2238SV * 3292SV *
2239has_cctx (Coro::State coro) 3293has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3294 PROTOTYPE: $
2241 CODE: 3295 CODE:
2242 RETVAL = boolSV (!!coro->cctx); 3296 /* maybe manage the running flag differently */
3297 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2243 OUTPUT: 3298 OUTPUT:
2244 RETVAL 3299 RETVAL
2245 3300
2246int 3301int
2247is_traced (Coro::State coro) 3302is_traced (Coro::State coro)
… …
2265 OUTPUT: 3320 OUTPUT:
2266 RETVAL 3321 RETVAL
2267 3322
2268void 3323void
2269force_cctx () 3324force_cctx ()
3325 PROTOTYPE:
2270 CODE: 3326 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3327 cctx_current->idle_sp = 0;
2273 3328
2274void 3329void
2275swap_defsv (Coro::State self) 3330swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3331 PROTOTYPE: $
2277 ALIAS: 3332 ALIAS:
2278 swap_defav = 1 3333 swap_defav = 1
2279 CODE: 3334 CODE:
2280 if (!self->slot) 3335 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3336 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3337 else
2283 { 3338 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3339 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3340 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3341
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3342 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3343 }
2289 3344
3345void
3346cancel (Coro::State self)
3347 CODE:
3348 coro_state_destroy (aTHX_ self);
3349 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3350
3351
3352SV *
3353enable_times (int enabled = enable_times)
3354 CODE:
3355{
3356 RETVAL = boolSV (enable_times);
3357
3358 if (enabled != enable_times)
3359 {
3360 enable_times = enabled;
3361
3362 coro_times_update ();
3363 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3364 }
3365}
3366 OUTPUT:
3367 RETVAL
3368
3369void
3370times (Coro::State self)
3371 PPCODE:
3372{
3373 struct coro *current = SvSTATE (coro_current);
3374
3375 if (expect_false (current == self))
3376 {
3377 coro_times_update ();
3378 coro_times_add (SvSTATE (coro_current));
3379 }
3380
3381 EXTEND (SP, 2);
3382 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3383 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3384
3385 if (expect_false (current == self))
3386 coro_times_sub (SvSTATE (coro_current));
3387}
3388
3389void
3390swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3391 CODE:
3392{
3393 struct coro *current = SvSTATE_current;
3394
3395 if (current == coro)
3396 SWAP_SVS (current);
3397
3398 if (!coro->swap_sv)
3399 coro->swap_sv = newAV ();
3400
3401 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3403
3404 if (current == coro)
3405 SWAP_SVS (current);
3406}
3407
3408
2290MODULE = Coro::State PACKAGE = Coro 3409MODULE = Coro::State PACKAGE = Coro
2291 3410
2292BOOT: 3411BOOT:
2293{ 3412{
2294 int i;
2295
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3413 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3414 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3415 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3416 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3417 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3418 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3419 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3420 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3421 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2302 3422
3423 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3424 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3425 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3426 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3427
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3428 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3429
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2307 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2308 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2309 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2310 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2311
2312 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2313 coro_ready[i] = newAV ();
2314 3436
2315 { 3437 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3438 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3439
2318 coroapi.schedule = api_schedule; 3440 coroapi.schedule = api_schedule;
3441 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3442 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3443 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3444 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3445 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3446 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3447 coroapi.current = coro_current;
2325 3448
2326 GCoroAPI = &coroapi; 3449 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3450 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3451 SvREADONLY_on (sv);
2329 } 3452 }
2330} 3453}
2331 3454
3455SV *
3456async (...)
3457 PROTOTYPE: &@
3458 CODE:
3459 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3460 api_ready (aTHX_ RETVAL);
3461 OUTPUT:
3462 RETVAL
3463
3464void
3465terminate (...)
3466 CODE:
3467 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3468
2332void 3469void
2333schedule (...) 3470schedule (...)
2334 CODE: 3471 CODE:
2335{ 3472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3473
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3474void
2338} 3475schedule_to (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3478
3479void
3480cede_to (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3483
2340void 3484void
2341cede (...) 3485cede (...)
2342 CODE: 3486 CODE:
2343{ 3487 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3488
2348void 3489void
2349cede_notself (...) 3490cede_notself (...)
2350 CODE: 3491 CODE:
2351{ 3492 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354}
2355 3493
2356void 3494void
2357_set_current (SV *current) 3495_set_current (SV *current)
2358 PROTOTYPE: $ 3496 PROTOTYPE: $
2359 CODE: 3497 CODE:
… …
2362 3500
2363void 3501void
2364_set_readyhook (SV *hook) 3502_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3503 PROTOTYPE: $
2366 CODE: 3504 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3505 SvREFCNT_dec (coro_readyhook);
3506 SvGETMAGIC (hook);
3507 if (SvOK (hook))
3508 {
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3509 coro_readyhook = newSVsv (hook);
2370 UNLOCK; 3510 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3511 }
3512 else
3513 {
3514 coro_readyhook = 0;
3515 CORO_READYHOOK = 0;
3516 }
2371 3517
2372int 3518int
2373prio (Coro::State coro, int newprio = 0) 3519prio (Coro::State coro, int newprio = 0)
3520 PROTOTYPE: $;$
2374 ALIAS: 3521 ALIAS:
2375 nice = 1 3522 nice = 1
2376 CODE: 3523 CODE:
2377{ 3524{
2378 RETVAL = coro->prio; 3525 RETVAL = coro->prio;
… …
2380 if (items > 1) 3527 if (items > 1)
2381 { 3528 {
2382 if (ix) 3529 if (ix)
2383 newprio = coro->prio - newprio; 3530 newprio = coro->prio - newprio;
2384 3531
2385 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3532 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2386 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3533 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2387 3534
2388 coro->prio = newprio; 3535 coro->prio = newprio;
2389 } 3536 }
2390} 3537}
2391 OUTPUT: 3538 OUTPUT:
… …
2405 CODE: 3552 CODE:
2406 RETVAL = coro_nready; 3553 RETVAL = coro_nready;
2407 OUTPUT: 3554 OUTPUT:
2408 RETVAL 3555 RETVAL
2409 3556
2410# for async_pool speedup
2411void 3557void
2412_pool_1 (SV *cb) 3558suspend (Coro::State self)
3559 PROTOTYPE: $
2413 CODE: 3560 CODE:
2414{ 3561 self->flags |= CF_SUSPENDED;
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3562
2422 if (!invoke) 3563void
3564resume (Coro::State self)
3565 PROTOTYPE: $
3566 CODE:
3567 self->flags &= ~CF_SUSPENDED;
3568
3569void
3570_pool_handler (...)
3571 CODE:
3572 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3573
3574void
3575async_pool (SV *cv, ...)
3576 PROTOTYPE: &@
3577 PPCODE:
3578{
3579 HV *hv = (HV *)av_pop (av_async_pool);
3580 AV *av = newAV ();
3581 SV *cb = ST (0);
3582 int i;
3583
3584 av_extend (av, items - 2);
3585 for (i = 1; i < items; ++i)
3586 av_push (av, SvREFCNT_inc_NN (ST (i)));
3587
3588 if ((SV *)hv == &PL_sv_undef)
2423 { 3589 {
2424 SV *old = PL_diehook; 3590 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2425 PL_diehook = 0; 3591 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2426 SvREFCNT_dec (old); 3592 SvREFCNT_dec (sv);
2427 croak ("\3async_pool terminate\2\n");
2428 } 3593 }
2429 3594
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3595 {
2443 av_fill (defav, len - 1); 3596 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3597
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3598 assert (!coro->invoke_cb);
3599 assert (!coro->invoke_av);
3600 coro->invoke_cb = SvREFCNT_inc (cb);
3601 coro->invoke_av = av;
2446 } 3602 }
2447 3603
3604 api_ready (aTHX_ (SV *)hv);
3605
3606 if (GIMME_V != G_VOID)
3607 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3608 else
2448 SvREFCNT_dec (invoke); 3609 SvREFCNT_dec (hv);
2449} 3610}
2450 3611
2451void 3612SV *
2452_pool_2 (SV *cb) 3613rouse_cb ()
3614 PROTOTYPE:
2453 CODE: 3615 CODE:
2454{ 3616 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3617 OUTPUT:
2527 RETVAL 3618 RETVAL
2528 3619
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3620void
2535_get_state (SV *self) 3621rouse_wait (...)
3622 PROTOTYPE: ;$
2536 PPCODE: 3623 PPCODE:
2537{ 3624 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550
2551 av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553 for (i = 0; i <= AvFILLp (defav); ++i)
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556 av_push (av, data_sv);
2557
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560 api_ready (aTHX_ self);
2561}
2562 3625
2563void 3626void
2564_set_state (SV *state) 3627on_enter (SV *block)
3628 ALIAS:
3629 on_leave = 1
2565 PROTOTYPE: $ 3630 PROTOTYPE: &
3631 CODE:
3632{
3633 struct coro *coro = SvSTATE_current;
3634 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3635
3636 block = s_get_cv_croak (block);
3637
3638 if (!*avp)
3639 *avp = newAV ();
3640
3641 av_push (*avp, SvREFCNT_inc (block));
3642
3643 if (!ix)
3644 on_enterleave_call (aTHX_ block);
3645
3646 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3647 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3648 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3649}
3650
3651
3652MODULE = Coro::State PACKAGE = PerlIO::cede
3653
3654BOOT:
3655 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3656
3657
3658MODULE = Coro::State PACKAGE = Coro::Semaphore
3659
3660SV *
3661new (SV *klass, SV *count = 0)
3662 CODE:
3663{
3664 int semcnt = 1;
3665
3666 if (count)
3667 {
3668 SvGETMAGIC (count);
3669
3670 if (SvOK (count))
3671 semcnt = SvIV (count);
3672 }
3673
3674 RETVAL = sv_bless (
3675 coro_waitarray_new (aTHX_ semcnt),
3676 GvSTASH (CvGV (cv))
3677 );
3678}
3679 OUTPUT:
3680 RETVAL
3681
3682# helper for Coro::Channel and others
3683SV *
3684_alloc (int count)
3685 CODE:
3686 RETVAL = coro_waitarray_new (aTHX_ count);
3687 OUTPUT:
3688 RETVAL
3689
3690SV *
3691count (SV *self)
3692 CODE:
3693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3694 OUTPUT:
3695 RETVAL
3696
3697void
3698up (SV *self, int adjust = 1)
3699 ALIAS:
3700 adjust = 1
3701 CODE:
3702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3703
3704void
3705down (...)
3706 CODE:
3707 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3708
3709void
3710wait (...)
3711 CODE:
3712 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3713
3714void
3715try (SV *self)
3716 PPCODE:
3717{
3718 AV *av = (AV *)SvRV (self);
3719 SV *count_sv = AvARRAY (av)[0];
3720 IV count = SvIVX (count_sv);
3721
3722 if (count > 0)
3723 {
3724 --count;
3725 SvIVX (count_sv) = count;
3726 XSRETURN_YES;
3727 }
3728 else
3729 XSRETURN_NO;
3730}
3731
3732void
3733waiters (SV *self)
3734 PPCODE:
3735{
3736 AV *av = (AV *)SvRV (self);
3737 int wcount = AvFILLp (av) + 1 - 1;
3738
3739 if (GIMME_V == G_SCALAR)
3740 XPUSHs (sv_2mortal (newSViv (wcount)));
3741 else
3742 {
3743 int i;
3744 EXTEND (SP, wcount);
3745 for (i = 1; i <= wcount; ++i)
3746 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3747 }
3748}
3749
3750MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3751
3752void
3753_may_delete (SV *sem, int count, int extra_refs)
2566 PPCODE: 3754 PPCODE:
2567{ 3755{
2568 AV *av = (AV *)SvRV (state); 3756 AV *av = (AV *)SvRV (sem);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2570 int i;
2571 3757
2572 errno = data->errorno; 3758 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2573 PL_laststype = data->laststype; 3759 && AvFILLp (av) == 0 /* no waiters, just count */
2574 PL_laststatval = data->laststatval; 3760 && SvIV (AvARRAY (av)[0]) == count)
2575 PL_statcache = data->statcache; 3761 XSRETURN_YES;
2576 3762
3763 XSRETURN_NO;
3764}
3765
3766MODULE = Coro::State PACKAGE = Coro::Signal
3767
3768SV *
3769new (SV *klass)
3770 CODE:
3771 RETVAL = sv_bless (
3772 coro_waitarray_new (aTHX_ 0),
3773 GvSTASH (CvGV (cv))
3774 );
3775 OUTPUT:
3776 RETVAL
3777
3778void
3779wait (...)
3780 CODE:
3781 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3782
3783void
3784broadcast (SV *self)
3785 CODE:
3786{
3787 AV *av = (AV *)SvRV (self);
3788 coro_signal_wake (aTHX_ av, AvFILLp (av));
3789}
3790
3791void
3792send (SV *self)
3793 CODE:
3794{
3795 AV *av = (AV *)SvRV (self);
3796
2577 EXTEND (SP, AvFILLp (av)); 3797 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3798 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3799 else
3800 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3801}
3802
3803IV
3804awaited (SV *self)
3805 CODE:
3806 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3807 OUTPUT:
3808 RETVAL
2581 3809
2582 3810
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3811MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3812
2585BOOT: 3813BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3814 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3815
2588SV * 3816void
2589_schedule (...) 3817_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3818 CODE:
2592{ 3819{
2593 static int incede; 3820 static int incede;
2594 3821
2595 api_cede_notself (aTHX); 3822 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3828 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3829 if (coro_nready >= incede)
2603 { 3830 {
2604 PUSHMARK (SP); 3831 PUSHMARK (SP);
2605 PUTBACK; 3832 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3833 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3834 }
2609 3835
2610 --incede; 3836 --incede;
2611} 3837}
2612 3838
2613 3839
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3840MODULE = Coro::State PACKAGE = Coro::AIO
2615 3841
2616BOOT: 3842void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3843_register (char *target, char *proto, SV *req)
3844 CODE:
3845{
3846 SV *req_cv = s_get_cv_croak (req);
3847 /* newXSproto doesn't return the CV on 5.8 */
3848 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3849 sv_setpv ((SV *)slf_cv, proto);
3850 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3851}
2618 3852
3853MODULE = Coro::State PACKAGE = Coro::Select
3854
3855void
3856patch_pp_sselect ()
3857 CODE:
3858 if (!coro_old_pp_sselect)
3859 {
3860 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3861 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3862 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3863 }
3864
3865void
3866unpatch_pp_sselect ()
3867 CODE:
3868 if (coro_old_pp_sselect)
3869 {
3870 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3871 coro_old_pp_sselect = 0;
3872 }
3873
3874

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