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Comparing Coro/Coro/State.xs (file contents):
Revision 1.268 by root, Fri Nov 14 06:41:41 2008 UTC vs.
Revision 1.364 by root, Thu Jul 16 02:19:17 2009 UTC

… …
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h" 9#include "perliol.h"
10 10
11#include "patchlevel.h" 11#include "schmorp.h"
12 12
13#include <stdio.h> 13#include <stdio.h>
14#include <errno.h> 14#include <errno.h>
15#include <assert.h> 15#include <assert.h>
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
51#endif 51#endif
52 52
53/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
55 55
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 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
108#endif 58#endif
109 59
110#ifndef CORO_STACKGUARD 60#ifndef CORO_STACKGUARD
… …
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128 80
129#if __GNUC__ >= 3 81#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 84# define INLINE static inline
133#else 85#else
134# define attribute(x) 86# define attribute(x)
135# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
136# define INLINE static 88# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
141 93
142#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
143 95
144#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
145 98
146#ifdef USE_ITHREADS 99#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 100# if CORO_PTHREAD
152static void *coro_thx; 101static void *coro_thx;
153# endif 102# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 103#endif
161 104
162# undef LOCK 105#ifdef __linux
163# define LOCK (void)0 106# include <time.h> /* for timespec */
164# undef UNLOCK 107# include <syscall.h> /* for SYS_* */
165# define UNLOCK (void)0 108# ifdef SYS_clock_gettime
166 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
167/* helper storage struct for Coro::AIO */ 110# define CORO_CLOCK_MONOTONIC 1
168struct io_state 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
169{ 112# endif
170 AV *res; 113#endif
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 114
177static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
178 121
179static U32 cctx_gen; 122static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 126static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 129
188struct transfer_args 130static AV *av_destroy; /* destruction queue */
189{ 131static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 132static SV *sv_idle; /* $Coro::idle */
191};
192 133
193static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 136static SV *rv_diehook;
196static SV *rv_warnhook; 137static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
198 139
199/* async_pool helper stuff */ 140/* async_pool helper stuff */
200static SV *sv_pool_rss; 141static SV *sv_pool_rss;
201static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
203 148
204/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
205static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
206 157
207static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
209 160
210enum { 161enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 168};
218 169
219/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 171typedef struct coro_cctx
172{
221 struct coro_cctx *next; 173 struct coro_cctx *next;
222 174
223 /* the stack */ 175 /* the stack */
224 void *sptr; 176 void *sptr;
225 size_t ssize; 177 size_t ssize;
… …
235 int valgrind_id; 187 int valgrind_id;
236#endif 188#endif
237 unsigned char flags; 189 unsigned char flags;
238} coro_cctx; 190} coro_cctx;
239 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
240enum { 196enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
245}; 202};
246 203
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 205typedef struct
206{
249 SV *defsv; 207 SV *defsv;
250 AV *defav; 208 AV *defav;
251 SV *errsv; 209 SV *errsv;
252 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
253#define VAR(name,type) type name; 212#define VAR(name,type) type name;
254# include "state.h" 213# include "state.h"
255#undef VAR 214#undef VAR
256} perl_slots; 215} perl_slots;
257 216
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 218
260/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
261struct coro { 220struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 222 coro_cctx *cctx;
264 223
265 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 229 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
268 231
232 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
273 238
274 /* statistics */ 239 /* statistics */
275 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
276 241
277 /* coro process data */ 242 /* coro process data */
278 int prio; 243 int prio;
279 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
280 246
281 /* async_pool */ 247 /* async_pool */
282 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
283 258
284 /* linked list */ 259 /* linked list */
285 struct coro *next, *prev; 260 struct coro *next, *prev;
286}; 261};
287 262
288typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
290 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
291/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
292 272
293#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
299 279
300/* for Coro.pm */ 280/* for Coro.pm */
301static SV *coro_current; 281static SV *coro_current;
302static SV *coro_readyhook; 282static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
306 307
307/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
308 309
309static SV * 310static SV *
310coro_get_sv (pTHX_ const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 335 get_hv (name, create);
335#endif 336#endif
336 return get_hv (name, create); 337 return get_hv (name, create);
337} 338}
338 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
339static AV * 439static AV *
340coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
341{ 441{
342 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
344 444
345 newpadlist = newAV (); 445 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 451#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 453 --AvFILLp (padlist);
354 454
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
357 457
358 return newpadlist; 458 return newpadlist;
359} 459}
360 460
361static void 461static void
362free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
363{ 463{
364 /* may be during global destruction */ 464 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
366 { 466 {
367 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
368 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
369 { 470 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
371 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 473 I32 j = AvFILLp (av);
373 SV *sv; 474
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 480 }
380 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
382 } 486 }
383} 487}
384 488
385static int 489static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 491{
388 AV *padlist; 492 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
390 498
391 /* casting is fun. */ 499 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
394 502
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 504
397 return 0; 505 return 0;
398} 506}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 507
403static MGVTBL coro_cv_vtbl = { 508static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 509 0, 0, 0, 0,
405 coro_cv_free 510 coro_cv_free
406}; 511};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 512
444/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
445static void 514static void
446get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
447{ 516{
… …
453 else 522 else
454 { 523 {
455#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 525 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 526 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
462#else 531#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 533#endif
465 } 534 }
466} 535}
467 536
468static void 537static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 545
477 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
478 547
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
481 550
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 552}
484 553
485/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
486 558
487static void 559static void
488load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
489{ 561{
490 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
491 c->slot = 0; 563 c->slot = 0;
492 564
493 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
494 566
495 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
499 572
500 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 574 # include "state.h"
502 #undef VAR 575 #undef VAR
503 576
… …
514 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
515 } 588 }
516 589
517 PUTBACK; 590 PUTBACK;
518 } 591 }
592
593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
519} 611}
520 612
521static void 613static void
522save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
523{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
633 c->slf_frame = slf_frame;
634
524 { 635 {
525 dSP; 636 dSP;
526 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 649 {
539 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
540 { 651 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
542 653
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 655 {
545 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
546 657
547 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
548 { 659 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
576 { 687 {
577 int i; 688 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 690 CXINC;
580 } 691 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 693
583 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
584 695
585 { 696 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 698
588 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
592 704
593 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 706 # include "state.h"
595 #undef VAR 707 #undef VAR
596 } 708 }
597} 709}
598 710
599/* 711/*
600 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
604 */ 716 */
605#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
607#else 719#else
608static void 720static void
609coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
610{ 722{
611 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 787 Safefree (PL_retstack);
676#endif 788#endif
677} 789}
678 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
679static size_t 800static size_t
680coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
681{ 802{
682 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
683 804
684 if (coro->mainstack) 805 if (coro->mainstack)
685 { 806 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
690 { 808 {
691 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
692 810 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 811 #undef SYM
696 } 812 }
697 else 813 else
698 slot = coro->slot;
699
700 if (slot)
701 { 814 {
702 rss += sizeof (slot->curstackinfo); 815 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 816 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 817 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 818 }
714 } 819 }
715 820
716 return rss; 821 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_set_stacklevel calling us */
722#define SSL_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
724#define SSL_TAIL set_stacklevel_tail (aTHX)
725
726INLINE void
727set_stacklevel_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 822}
745 823
746/** coroutine stack handling ************************************************/ 824/** coroutine stack handling ************************************************/
747 825
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 826static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 835#endif
758 836
759/* 837/*
760 * This overrides the default magic get method of %SIG elements. 838 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 840 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 841 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 842 */
768static int 843static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 845{
771 const char *s = MgPV_nolen_const (mg); 846 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 900
826 if (svp) 901 if (svp)
827 { 902 {
828 SV *old = *svp; 903 SV *old = *svp;
829 *svp = newSVsv (sv); 904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 905 SvREFCNT_dec (old);
831 return 0; 906 return 0;
832 } 907 }
833 } 908 }
834 909
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 911}
837 912
838static void 913static void
914prepare_nop (pTHX_ struct coro_transfer_args *ta)
915{
916 /* kind of mega-hacky, but works */
917 ta->next = ta->prev = (struct coro *)ta;
918}
919
920static int
921slf_check_nop (pTHX_ struct CoroSLF *frame)
922{
923 return 0;
924}
925
926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
840{ 936{
841 /* 937 /*
842 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
843 */ 939 */
… …
845 941
846 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 949 PL_curpm = 0;
851 PL_curpad = 0; 950 PL_curpad = 0;
852 PL_localizing = 0; 951 PL_localizing = 0;
853 PL_dirty = 0; 952 PL_dirty = 0;
854 PL_restartop = 0; 953 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 954#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 955 PL_parser = 0;
857#endif 956#endif
957 PL_hints = 0;
858 958
859 /* recreate the die/warn hooks */ 959 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 962
863 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 970
870 { 971 {
871 dSP; 972 dSP;
872 UNOP myop; 973 UNOP myop;
873 974
874 Zero (&myop, 1, UNOP); 975 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
877 979
878 PUSHMARK (SP); 980 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 982 PUTBACK;
881 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 985 }
885 986
886 /* this newly created coroutine might be run on an existing cctx which most 987 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 989 */
890 SSL_HEAD; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
893static void 1011static void
894coro_destruct (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
895{ 1013{
896 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
897 { 1015 {
898 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
908 1026
909 /* unwind main stack */ 1027 /* unwind main stack */
910 dounwind (-1); 1028 dounwind (-1);
911 } 1029 }
1030}
912 1031
913 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
916 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1036
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
923 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
925 1071 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
927} 1074}
928 1075
929INLINE void 1076INLINE void
930free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
931{ 1078{
… …
939static int 1086static int
940runops_trace (pTHX) 1087runops_trace (pTHX)
941{ 1088{
942 COP *oldcop = 0; 1089 COP *oldcop = 0;
943 int oldcxix = -2; 1090 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1091
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1093 {
949 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
950 1095
951 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1097 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1099 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1101 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
958 SV **cb; 1103 SV **cb;
… …
995 1140
996 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
997 { 1142 {
998 SV **cb; 1143 SV **cb;
999 1144
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1146 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1148
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1150 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1151 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
1010 1154
1011 if (isGV (gv)) 1155 if (isGV (gv))
… …
1016 SAVETMPS; 1160 SAVETMPS;
1017 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1162 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1164 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1166 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1167 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1169 SPAGAIN;
1026 FREETMPS; 1170 FREETMPS;
… …
1029 } 1173 }
1030 1174
1031 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
1032 } 1176 }
1033 1177
1034 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1179 {
1036 dSP; 1180 dSP;
1037 1181
1038 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1183 ENTER;
… …
1058 1202
1059 TAINT_NOT; 1203 TAINT_NOT;
1060 return 0; 1204 return 0;
1061} 1205}
1062 1206
1207static struct CoroSLF cctx_ssl_frame;
1208
1063static void 1209static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1211{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1212 ta->prev = 0;
1068} 1213}
1069 1214
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1215static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1217{
1073/* also initialises PL_top_env */ 1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1224static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
1076{ 1226{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
1081 1228
1082 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
1084 1231
1085 Zero (&myop, 1, UNOP); 1232 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1236
1089 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1239
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1242}
1098 1243
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1245INLINE void
1101transfer_tail (pTHX) 1246transfer_tail (pTHX)
1102{ 1247{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1248 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1249}
1119 1250
1120/* 1251/*
1121 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1253 */
… …
1129# endif 1260# endif
1130#endif 1261#endif
1131 { 1262 {
1132 dTHX; 1263 dTHX;
1133 1264
1134 /* we are the alternative tail to pp_set_stacklevel */ 1265 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1266 /* not doing so will re-execute it, which is exactly what we want */
1136 SSL_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
1140 1268
1141 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
1143 1271
1144 /* cctx_run is the alternative tail of transfer() */ 1272 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1273 transfer_tail (aTHX);
1146 1274
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these
1281 */
1150 1282
1151 /* 1283 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1284 * 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) 1285 * 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 1286 * 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" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1291 */
1158 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1294 }
1161} 1295}
… …
1238cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1239{ 1373{
1240 if (!cctx) 1374 if (!cctx)
1241 return; 1375 return;
1242 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1243 --cctx_count; 1379 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1380 coro_destroy (&cctx->cctx);
1245 1381
1246 /* coro_transfer creates new, empty cctx's */ 1382 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1383 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1306 1442
1307static void 1443static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1310 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1311 { 1449 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 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"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1452
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)) 1453 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"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1455
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1457 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"); 1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1459#endif
1325 } 1460 }
1326} 1461}
1327 1462
1328/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1329static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1466{
1332 dSTACKLEVEL; 1467 dSTACKLEVEL;
1333 1468
1334 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1470 if (expect_false (!prev))
1336 { 1471 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1472 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1474 }
1340 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1341 { 1476 {
1342 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1343 1478
1344 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1345 { 1480 {
1346 /* create a new empty/source context */ 1481 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1350 } 1484 }
1351 1485
1352 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1488
1357 /* first get rid of the old state */ 1489 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1490 save_perl (aTHX_ prev);
1359 1491
1360 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1366 } 1498 }
1367 else 1499 else
1368 load_perl (aTHX_ next); 1500 load_perl (aTHX_ next);
1369 1501
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1502 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1503 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1504 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1505 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1506 && !force_cctx
1377 )) 1507 ))
1378 { 1508 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1509 /* 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)); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1511
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 */ 1512 /* 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 */ 1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1515 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1516 next->cctx = cctx_get (aTHX);
1389 1517
1390 cctx_put (prev__cctx); 1518 cctx_put (cctx_current);
1391 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1392 1522
1393 ++next->usecount; 1523 ++next->usecount;
1394 1524
1395 if (expect_true (!next->cctx)) 1525 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1527
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1528 next->cctx = 0;
1399 transfer_next = next;
1400 1529
1401 if (expect_false (prev__cctx != next->cctx)) 1530 if (expect_false (cctx_prev != cctx_current))
1402 { 1531 {
1403 prev__cctx->top_env = PL_top_env; 1532 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1533 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1535 }
1407 1536
1408 transfer_tail (aTHX); 1537 transfer_tail (aTHX);
1409 } 1538 }
1410} 1539}
… …
1417static int 1546static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1548{
1420 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1421 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1422 1554
1423 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1424 1556
1425 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1426 { 1558 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1561 --coro_nready;
1431 UNLOCK;
1432 } 1562 }
1433 else 1563 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1565
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1437 { 1567 && coro->mainstack != main_mainstack
1438 struct coro temp; 1568 && coro->slot
1439 1569 && !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);
1445
1446 coro_destruct (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1571
1453 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1455 1576
1456 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1459 1580
… …
1497# define MGf_DUP 0 1618# define MGf_DUP 0
1498#endif 1619#endif
1499}; 1620};
1500 1621
1501static void 1622static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1623prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1624{
1504 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1507} 1628}
1508 1629
1509static void 1630static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1632{
1512 dTHX;
1513 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1514 1634
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1517} 1637}
1518 1638
1519/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1520 1640
1521static void 1641INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1523{ 1643{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1525}
1526 1645
1527static SV * 1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1528coro_deq (pTHX) 1654coro_deq (pTHX)
1529{ 1655{
1530 int prio; 1656 int prio;
1531 1657
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1533 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1534 return av_shift (coro_ready [prio]); 1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1535 1669
1536 return 0; 1670 return 0;
1537} 1671}
1538 1672
1539static int 1673static int
1540api_ready (SV *coro_sv) 1674api_ready (pTHX_ SV *coro_sv)
1541{ 1675{
1542 dTHX;
1543 struct coro *coro; 1676 struct coro *coro;
1544 SV *sv_hook; 1677 SV *sv_hook;
1545 void (*xs_hook)(void); 1678 void (*xs_hook)(void);
1546 1679
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1680 coro = SvSTATE (coro_sv);
1551 1681
1552 if (coro->flags & CF_READY) 1682 if (coro->flags & CF_READY)
1553 return 0; 1683 return 0;
1554 1684
1555 coro->flags |= CF_READY; 1685 coro->flags |= CF_READY;
1556 1686
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1687 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1688 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1689
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1690 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1691 ++coro_nready;
1564 1692
1565 UNLOCK;
1566
1567 if (sv_hook) 1693 if (sv_hook)
1568 { 1694 {
1569 dSP; 1695 dSP;
1570 1696
1571 ENTER; 1697 ENTER;
1572 SAVETMPS; 1698 SAVETMPS;
1573 1699
1574 PUSHMARK (SP); 1700 PUSHMARK (SP);
1575 PUTBACK; 1701 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1702 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1703
1579 FREETMPS; 1704 FREETMPS;
1580 LEAVE; 1705 LEAVE;
1581 } 1706 }
1582 1707
… …
1585 1710
1586 return 1; 1711 return 1;
1587} 1712}
1588 1713
1589static int 1714static int
1590api_is_ready (SV *coro_sv) 1715api_is_ready (pTHX_ SV *coro_sv)
1591{ 1716{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1717 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1718}
1596 1719
1720/* expects to own a reference to next->hv */
1597INLINE void 1721INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1722prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1723{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1724 SV *prev_sv = SvRV (coro_current);
1725
1644 ta->prev = SvSTATE (prev_sv); 1726 ta->prev = SvSTATE_hv (prev_sv);
1727 ta->next = next;
1728
1645 TRANSFER_CHECK (*ta); 1729 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1730
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1731 SvRV_set (coro_current, (SV *)next->hv);
1649 1732
1650 LOCK;
1651 free_coro_mortal (aTHX); 1733 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1734 coro_mortal = prev_sv;
1653 UNLOCK; 1735}
1736
1737static void
1738prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1739{
1740 for (;;)
1741 {
1742 struct coro *next = coro_deq (aTHX);
1743
1744 if (expect_true (next))
1745 {
1746 /* cannot transfer to destroyed coros, skip and look for next */
1747 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1748 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1749 else
1750 {
1751 next->flags &= ~CF_READY;
1752 --coro_nready;
1753
1754 prepare_schedule_to (aTHX_ ta, next);
1755 break;
1756 }
1757 }
1758 else
1759 {
1760 /* nothing to schedule: call the idle handler */
1761 if (SvROK (sv_idle)
1762 && SvOBJECT (SvRV (sv_idle)))
1763 {
1764 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1765 api_ready (aTHX_ SvRV (sv_idle));
1766 --coro_nready;
1767 }
1768 else
1769 {
1770 dSP;
1771
1772 ENTER;
1773 SAVETMPS;
1774
1775 PUSHMARK (SP);
1776 PUTBACK;
1777 call_sv (sv_idle, G_VOID | G_DISCARD);
1778
1779 FREETMPS;
1780 LEAVE;
1781 }
1782 }
1783 }
1654} 1784}
1655 1785
1656INLINE void 1786INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1787prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1788{
1659 api_ready (coro_current); 1789 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1790 prepare_schedule (aTHX_ ta);
1661} 1791}
1662 1792
1663static void 1793INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1794prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1795{
1666 SV *prev = SvRV (coro_current); 1796 SV *prev = SvRV (coro_current);
1667 1797
1668 if (coro_nready) 1798 if (coro_nready)
1669 { 1799 {
1670 prepare_schedule (aTHX_ ta); 1800 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1801 api_ready (aTHX_ prev);
1672 } 1802 }
1673 else 1803 else
1674 ta->prev = ta->next = SvSTATE (prev); 1804 prepare_nop (aTHX_ ta);
1675} 1805}
1676 1806
1677static void 1807static void
1678api_schedule (void) 1808api_schedule (pTHX)
1679{ 1809{
1680 dTHX;
1681 struct transfer_args ta; 1810 struct coro_transfer_args ta;
1682 1811
1683 prepare_schedule (aTHX_ &ta); 1812 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1813 TRANSFER (ta, 1);
1685} 1814}
1686 1815
1816static void
1817api_schedule_to (pTHX_ SV *coro_sv)
1818{
1819 struct coro_transfer_args ta;
1820 struct coro *next = SvSTATE (coro_sv);
1821
1822 SvREFCNT_inc_NN (coro_sv);
1823 prepare_schedule_to (aTHX_ &ta, next);
1824}
1825
1687static int 1826static int
1688api_cede (void) 1827api_cede (pTHX)
1689{ 1828{
1690 dTHX;
1691 struct transfer_args ta; 1829 struct coro_transfer_args ta;
1692 1830
1693 prepare_cede (aTHX_ &ta); 1831 prepare_cede (aTHX_ &ta);
1694 1832
1695 if (expect_true (ta.prev != ta.next)) 1833 if (expect_true (ta.prev != ta.next))
1696 { 1834 {
… …
1700 else 1838 else
1701 return 0; 1839 return 0;
1702} 1840}
1703 1841
1704static int 1842static int
1705api_cede_notself (void) 1843api_cede_notself (pTHX)
1706{ 1844{
1707 if (coro_nready) 1845 if (coro_nready)
1708 { 1846 {
1709 dTHX;
1710 struct transfer_args ta; 1847 struct coro_transfer_args ta;
1711 1848
1712 prepare_cede_notself (aTHX_ &ta); 1849 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1850 TRANSFER (ta, 1);
1714 return 1; 1851 return 1;
1715 } 1852 }
1716 else 1853 else
1717 return 0; 1854 return 0;
1718} 1855}
1719 1856
1720static void 1857static void
1721api_trace (SV *coro_sv, int flags) 1858api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1859{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1860 struct coro *coro = SvSTATE (coro_sv);
1861
1862 if (coro->flags & CF_RUNNING)
1863 croak ("cannot enable tracing on a running coroutine, caught");
1725 1864
1726 if (flags & CC_TRACE) 1865 if (flags & CC_TRACE)
1727 { 1866 {
1728 if (!coro->cctx) 1867 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1868 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1869 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1870 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 1871
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1872 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1873 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1874 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1875 {
… …
1741 else 1880 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1881 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1882 }
1744} 1883}
1745 1884
1746#if 0 1885static void
1886coro_call_on_destroy (pTHX_ struct coro *coro)
1887{
1888 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1889 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1890
1891 if (on_destroyp)
1892 {
1893 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1894
1895 while (AvFILLp (on_destroy) >= 0)
1896 {
1897 dSP; /* don't disturb outer sp */
1898 SV *cb = av_pop (on_destroy);
1899
1900 PUSHMARK (SP);
1901
1902 if (statusp)
1903 {
1904 int i;
1905 AV *status = (AV *)SvRV (*statusp);
1906 EXTEND (SP, AvFILLp (status) + 1);
1907
1908 for (i = 0; i <= AvFILLp (status); ++i)
1909 PUSHs (AvARRAY (status)[i]);
1910 }
1911
1912 PUTBACK;
1913 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1914 }
1915 }
1916}
1917
1918static void
1919slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 int i;
1922 HV *hv = (HV *)SvRV (coro_current);
1923 AV *av = newAV ();
1924
1925 av_extend (av, items - 1);
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928
1929 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1930
1931 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1932 api_ready (aTHX_ sv_manager);
1933
1934 frame->prepare = prepare_schedule;
1935 frame->check = slf_check_repeat;
1936
1937 /* as a minor optimisation, we could unwind all stacks here */
1938 /* but that puts extra pressure on pp_slf, and is not worth much */
1939 /*coro_unwind_stacks (aTHX);*/
1940}
1941
1942/*****************************************************************************/
1943/* async pool handler */
1944
1747static int 1945static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 1947{
1750 AV *padlist; 1948 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 1949 struct coro *coro = (struct coro *)frame->data;
1752 1950
1753 abort (); 1951 if (!coro->invoke_cb)
1952 return 1; /* loop till we have invoke */
1953 else
1954 {
1955 hv_store (hv, "desc", sizeof ("desc") - 1,
1956 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1957
1958 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1959
1960 {
1961 dSP;
1962 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1963 PUTBACK;
1964 }
1965
1966 SvREFCNT_dec (GvAV (PL_defgv));
1967 GvAV (PL_defgv) = coro->invoke_av;
1968 coro->invoke_av = 0;
1969
1970 return 0;
1971 }
1972}
1973
1974static void
1975slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1976{
1977 HV *hv = (HV *)SvRV (coro_current);
1978 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979
1980 if (expect_true (coro->saved_deffh))
1981 {
1982 /* subsequent iteration */
1983 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1984 coro->saved_deffh = 0;
1985
1986 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1987 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1988 {
1989 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1990 coro->invoke_av = newAV ();
1991
1992 frame->prepare = prepare_nop;
1993 }
1994 else
1995 {
1996 av_clear (GvAV (PL_defgv));
1997 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1998
1999 coro->prio = 0;
2000
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (aTHX_ coro_current, 0);
2003
2004 frame->prepare = prepare_schedule;
2005 av_push (av_async_pool, SvREFCNT_inc (hv));
2006 }
2007 }
2008 else
2009 {
2010 /* first iteration, simply fall through */
2011 frame->prepare = prepare_nop;
2012 }
2013
2014 frame->check = slf_check_pool_handler;
2015 frame->data = (void *)coro;
2016}
2017
2018/*****************************************************************************/
2019/* rouse callback */
2020
2021#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2022
2023static void
2024coro_rouse_callback (pTHX_ CV *cv)
2025{
2026 dXSARGS;
2027 SV *data = (SV *)S_GENSUB_ARG;
2028
2029 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2030 {
2031 /* first call, set args */
2032 SV *coro = SvRV (data);
2033 AV *av = newAV ();
2034
2035 SvRV_set (data, (SV *)av);
2036
2037 /* better take a full copy of the arguments */
2038 while (items--)
2039 av_store (av, items, newSVsv (ST (items)));
2040
2041 api_ready (aTHX_ coro);
2042 SvREFCNT_dec (coro);
2043 }
2044
2045 XSRETURN_EMPTY;
2046}
2047
2048static int
2049slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2050{
2051 SV *data = (SV *)frame->data;
2052
2053 if (CORO_THROW)
2054 return 0;
2055
2056 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2057 return 1;
2058
2059 /* now push all results on the stack */
2060 {
2061 dSP;
2062 AV *av = (AV *)SvRV (data);
2063 int i;
2064
2065 EXTEND (SP, AvFILLp (av) + 1);
2066 for (i = 0; i <= AvFILLp (av); ++i)
2067 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2068
2069 /* we have stolen the elements, so set length to zero and free */
2070 AvFILLp (av) = -1;
2071 av_undef (av);
2072
2073 PUTBACK;
2074 }
1754 2075
1755 return 0; 2076 return 0;
1756} 2077}
1757 2078
1758static MGVTBL coro_gensub_vtbl = { 2079static void
1759 0, 0, 0, 0, 2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2081{
1761}; 2082 SV *cb;
1762#endif 2083
2084 if (items)
2085 cb = arg [0];
2086 else
2087 {
2088 struct coro *coro = SvSTATE_current;
2089
2090 if (!coro->rouse_cb)
2091 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2092
2093 cb = sv_2mortal (coro->rouse_cb);
2094 coro->rouse_cb = 0;
2095 }
2096
2097 if (!SvROK (cb)
2098 || SvTYPE (SvRV (cb)) != SVt_PVCV
2099 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2100 croak ("Coro::rouse_wait called with illegal callback argument,");
2101
2102 {
2103 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2104 SV *data = (SV *)S_GENSUB_ARG;
2105
2106 frame->data = (void *)data;
2107 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2108 frame->check = slf_check_rouse_wait;
2109 }
2110}
2111
2112static SV *
2113coro_new_rouse_cb (pTHX)
2114{
2115 HV *hv = (HV *)SvRV (coro_current);
2116 struct coro *coro = SvSTATE_hv (hv);
2117 SV *data = newRV_inc ((SV *)hv);
2118 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2119
2120 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2121 SvREFCNT_dec (data); /* magicext increases the refcount */
2122
2123 SvREFCNT_dec (coro->rouse_cb);
2124 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2125
2126 return cb;
2127}
2128
2129/*****************************************************************************/
2130/* schedule-like-function opcode (SLF) */
2131
2132static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2133static const CV *slf_cv;
2134static SV **slf_argv;
2135static int slf_argc, slf_arga; /* count, allocated */
2136static I32 slf_ax; /* top of stack, for restore */
2137
2138/* this restores the stack in the case we patched the entersub, to */
2139/* recreate the stack frame as perl will on following calls */
2140/* since entersub cleared the stack */
2141static OP *
2142pp_restore (pTHX)
2143{
2144 int i;
2145 SV **SP = PL_stack_base + slf_ax;
2146
2147 PUSHMARK (SP);
2148
2149 EXTEND (SP, slf_argc + 1);
2150
2151 for (i = 0; i < slf_argc; ++i)
2152 PUSHs (sv_2mortal (slf_argv [i]));
2153
2154 PUSHs ((SV *)CvGV (slf_cv));
2155
2156 RETURNOP (slf_restore.op_first);
2157}
2158
2159static void
2160slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2161{
2162 SV **arg = (SV **)slf_frame.data;
2163
2164 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2165}
2166
2167static void
2168slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 if (items != 2)
2171 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2172
2173 frame->prepare = slf_prepare_transfer;
2174 frame->check = slf_check_nop;
2175 frame->data = (void *)arg; /* let's hope it will stay valid */
2176}
2177
2178static void
2179slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2180{
2181 frame->prepare = prepare_schedule;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2187{
2188 struct coro *next = (struct coro *)slf_frame.data;
2189
2190 SvREFCNT_inc_NN (next->hv);
2191 prepare_schedule_to (aTHX_ ta, next);
2192}
2193
2194static void
2195slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 if (!items)
2198 croak ("Coro::schedule_to expects a coroutine argument, caught");
2199
2200 frame->data = (void *)SvSTATE (arg [0]);
2201 frame->prepare = slf_prepare_schedule_to;
2202 frame->check = slf_check_nop;
2203}
2204
2205static void
2206slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 api_ready (aTHX_ SvRV (coro_current));
2209
2210 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2211}
2212
2213static void
2214slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2215{
2216 frame->prepare = prepare_cede;
2217 frame->check = slf_check_nop;
2218}
2219
2220static void
2221slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2222{
2223 frame->prepare = prepare_cede_notself;
2224 frame->check = slf_check_nop;
2225}
2226
2227/*
2228 * these not obviously related functions are all rolled into one
2229 * function to increase chances that they all will call transfer with the same
2230 * stack offset
2231 * SLF stands for "schedule-like-function".
2232 */
2233static OP *
2234pp_slf (pTHX)
2235{
2236 I32 checkmark; /* mark SP to see how many elements check has pushed */
2237
2238 /* set up the slf frame, unless it has already been set-up */
2239 /* the latter happens when a new coro has been started */
2240 /* or when a new cctx was attached to an existing coroutine */
2241 if (expect_true (!slf_frame.prepare))
2242 {
2243 /* first iteration */
2244 dSP;
2245 SV **arg = PL_stack_base + TOPMARK + 1;
2246 int items = SP - arg; /* args without function object */
2247 SV *gv = *sp;
2248
2249 /* do a quick consistency check on the "function" object, and if it isn't */
2250 /* for us, divert to the real entersub */
2251 if (SvTYPE (gv) != SVt_PVGV
2252 || !GvCV (gv)
2253 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2254 return PL_ppaddr[OP_ENTERSUB](aTHX);
2255
2256 if (!(PL_op->op_flags & OPf_STACKED))
2257 {
2258 /* ampersand-form of call, use @_ instead of stack */
2259 AV *av = GvAV (PL_defgv);
2260 arg = AvARRAY (av);
2261 items = AvFILLp (av) + 1;
2262 }
2263
2264 /* now call the init function, which needs to set up slf_frame */
2265 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2266 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2267
2268 /* pop args */
2269 SP = PL_stack_base + POPMARK;
2270
2271 PUTBACK;
2272 }
2273
2274 /* now that we have a slf_frame, interpret it! */
2275 /* we use a callback system not to make the code needlessly */
2276 /* complicated, but so we can run multiple perl coros from one cctx */
2277
2278 do
2279 {
2280 struct coro_transfer_args ta;
2281
2282 slf_frame.prepare (aTHX_ &ta);
2283 TRANSFER (ta, 0);
2284
2285 checkmark = PL_stack_sp - PL_stack_base;
2286 }
2287 while (slf_frame.check (aTHX_ &slf_frame));
2288
2289 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2290
2291 /* exception handling */
2292 if (expect_false (CORO_THROW))
2293 {
2294 SV *exception = sv_2mortal (CORO_THROW);
2295
2296 CORO_THROW = 0;
2297 sv_setsv (ERRSV, exception);
2298 croak (0);
2299 }
2300
2301 /* return value handling - mostly like entersub */
2302 /* make sure we put something on the stack in scalar context */
2303 if (GIMME_V == G_SCALAR)
2304 {
2305 dSP;
2306 SV **bot = PL_stack_base + checkmark;
2307
2308 if (sp == bot) /* too few, push undef */
2309 bot [1] = &PL_sv_undef;
2310 else if (sp != bot + 1) /* too many, take last one */
2311 bot [1] = *sp;
2312
2313 SP = bot + 1;
2314
2315 PUTBACK;
2316 }
2317
2318 return NORMAL;
2319}
2320
2321static void
2322api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2323{
2324 int i;
2325 SV **arg = PL_stack_base + ax;
2326 int items = PL_stack_sp - arg + 1;
2327
2328 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2329
2330 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2331 && PL_op->op_ppaddr != pp_slf)
2332 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2333
2334 CvFLAGS (cv) |= CVf_SLF;
2335 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2336 slf_cv = cv;
2337
2338 /* we patch the op, and then re-run the whole call */
2339 /* we have to put the same argument on the stack for this to work */
2340 /* and this will be done by pp_restore */
2341 slf_restore.op_next = (OP *)&slf_restore;
2342 slf_restore.op_type = OP_CUSTOM;
2343 slf_restore.op_ppaddr = pp_restore;
2344 slf_restore.op_first = PL_op;
2345
2346 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2347
2348 if (PL_op->op_flags & OPf_STACKED)
2349 {
2350 if (items > slf_arga)
2351 {
2352 slf_arga = items;
2353 free (slf_argv);
2354 slf_argv = malloc (slf_arga * sizeof (SV *));
2355 }
2356
2357 slf_argc = items;
2358
2359 for (i = 0; i < items; ++i)
2360 slf_argv [i] = SvREFCNT_inc (arg [i]);
2361 }
2362 else
2363 slf_argc = 0;
2364
2365 PL_op->op_ppaddr = pp_slf;
2366 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2367
2368 PL_op = (OP *)&slf_restore;
2369}
2370
2371/*****************************************************************************/
2372/* dynamic wind */
2373
2374static void
2375on_enterleave_call (pTHX_ SV *cb)
2376{
2377 dSP;
2378
2379 PUSHSTACK;
2380
2381 PUSHMARK (SP);
2382 PUTBACK;
2383 call_sv (cb, G_VOID | G_DISCARD);
2384 SPAGAIN;
2385
2386 POPSTACK;
2387}
2388
2389static SV *
2390coro_avp_pop_and_free (pTHX_ AV **avp)
2391{
2392 AV *av = *avp;
2393 SV *res = av_pop (av);
2394
2395 if (AvFILLp (av) < 0)
2396 {
2397 *avp = 0;
2398 SvREFCNT_dec (av);
2399 }
2400
2401 return res;
2402}
2403
2404static void
2405coro_pop_on_enter (pTHX_ void *coro)
2406{
2407 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2408 SvREFCNT_dec (cb);
2409}
2410
2411static void
2412coro_pop_on_leave (pTHX_ void *coro)
2413{
2414 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2415 on_enterleave_call (aTHX_ sv_2mortal (cb));
2416}
1763 2417
1764/*****************************************************************************/ 2418/*****************************************************************************/
1765/* PerlIO::cede */ 2419/* PerlIO::cede */
1766 2420
1767typedef struct 2421typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2449 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2450 double now = nvtime ();
1797 2451
1798 if (now >= self->next) 2452 if (now >= self->next)
1799 { 2453 {
1800 api_cede (); 2454 api_cede (aTHX);
1801 self->next = now + self->every; 2455 self->next = now + self->every;
1802 } 2456 }
1803 2457
1804 return PerlIOBuf_flush (aTHX_ f); 2458 return PerlIOBuf_flush (aTHX_ f);
1805} 2459}
… …
1835 PerlIOBuf_get_cnt, 2489 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2490 PerlIOBuf_set_ptrcnt,
1837}; 2491};
1838 2492
1839/*****************************************************************************/ 2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
1840 2495
1841static const CV *ssl_cv; /* for quick consistency check */
1842
1843static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *ssl_arg0;
1845static SV *ssl_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2496static SV *
1851pp_restore (pTHX) 2497coro_waitarray_new (pTHX_ int count)
1852{ 2498{
2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
2502
2503 /* unfortunately, building manually saves memory */
2504 Newx (ary, 2, SV *);
2505 AvALLOC (av) = ary;
2506#if PERL_VERSION_ATLEAST (5,10,0)
2507 AvARRAY (av) = ary;
2508#else
2509 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2510 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2511 SvPVX ((SV *)av) = (char *)ary;
2512#endif
2513 AvMAX (av) = 1;
2514 AvFILLp (av) = 0;
2515 ary [0] = newSViv (count);
2516
2517 return newRV_noinc ((SV *)av);
2518}
2519
2520/* semaphore */
2521
2522static void
2523coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2524{
2525 SV *count_sv = AvARRAY (av)[0];
2526 IV count = SvIVX (count_sv);
2527
2528 count += adjust;
2529 SvIVX (count_sv) = count;
2530
2531 /* now wake up as many waiters as are expected to lock */
2532 while (count > 0 && AvFILLp (av) > 0)
2533 {
2534 SV *cb;
2535
2536 /* swap first two elements so we can shift a waiter */
2537 AvARRAY (av)[0] = AvARRAY (av)[1];
2538 AvARRAY (av)[1] = count_sv;
2539 cb = av_shift (av);
2540
2541 if (SvOBJECT (cb))
2542 {
2543 api_ready (aTHX_ cb);
2544 --count;
2545 }
2546 else if (SvTYPE (cb) == SVt_PVCV)
2547 {
2548 dSP;
2549 PUSHMARK (SP);
2550 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2551 PUTBACK;
2552 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2553 }
2554
2555 SvREFCNT_dec (cb);
2556 }
2557}
2558
2559static void
2560coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2561{
2562 /* call $sem->adjust (0) to possibly wake up some other waiters */
2563 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2564}
2565
2566static int
2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2568{
2569 AV *av = (AV *)frame->data;
2570 SV *count_sv = AvARRAY (av)[0];
2571
2572 /* if we are about to throw, don't actually acquire the lock, just throw */
2573 if (CORO_THROW)
2574 return 0;
2575 else if (SvIVX (count_sv) > 0)
2576 {
2577 SvSTATE_current->on_destroy = 0;
2578
2579 if (acquire)
2580 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2581 else
2582 coro_semaphore_adjust (aTHX_ av, 0);
2583
2584 return 0;
2585 }
2586 else
2587 {
2588 int i;
2589 /* if we were woken up but can't down, we look through the whole */
2590 /* waiters list and only add us if we aren't in there already */
2591 /* this avoids some degenerate memory usage cases */
2592
2593 for (i = 1; i <= AvFILLp (av); ++i)
2594 if (AvARRAY (av)[i] == SvRV (coro_current))
2595 return 1;
2596
2597 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2598 return 1;
2599 }
2600}
2601
2602static int
2603slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2604{
2605 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2606}
2607
2608static int
2609slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2610{
2611 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2612}
2613
2614static void
2615slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2616{
2617 AV *av = (AV *)SvRV (arg [0]);
2618
2619 if (SvIVX (AvARRAY (av)[0]) > 0)
2620 {
2621 frame->data = (void *)av;
2622 frame->prepare = prepare_nop;
2623 }
2624 else
2625 {
2626 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2627
2628 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2629 frame->prepare = prepare_schedule;
2630
2631 /* to avoid race conditions when a woken-up coro gets terminated */
2632 /* we arrange for a temporary on_destroy that calls adjust (0) */
2633 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2634 }
2635}
2636
2637static void
2638slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2639{
2640 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2641 frame->check = slf_check_semaphore_down;
2642}
2643
2644static void
2645slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2646{
2647 if (items >= 2)
2648 {
2649 /* callback form */
2650 AV *av = (AV *)SvRV (arg [0]);
2651 SV *cb_cv = s_get_cv_croak (arg [1]);
2652
2653 av_push (av, SvREFCNT_inc_NN (cb_cv));
2654
2655 if (SvIVX (AvARRAY (av)[0]) > 0)
2656 coro_semaphore_adjust (aTHX_ av, 0);
2657
2658 frame->prepare = prepare_nop;
2659 frame->check = slf_check_nop;
2660 }
2661 else
2662 {
2663 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2664 frame->check = slf_check_semaphore_wait;
2665 }
2666}
2667
2668/* signal */
2669
2670static void
2671coro_signal_wake (pTHX_ AV *av, int count)
2672{
2673 SvIVX (AvARRAY (av)[0]) = 0;
2674
2675 /* now signal count waiters */
2676 while (count > 0 && AvFILLp (av) > 0)
2677 {
2678 SV *cb;
2679
2680 /* swap first two elements so we can shift a waiter */
2681 cb = AvARRAY (av)[0];
2682 AvARRAY (av)[0] = AvARRAY (av)[1];
2683 AvARRAY (av)[1] = cb;
2684
2685 cb = av_shift (av);
2686
2687 if (SvTYPE (cb) == SVt_PVCV)
2688 {
2689 dSP;
2690 PUSHMARK (SP);
2691 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2692 PUTBACK;
2693 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2694 }
2695 else
2696 {
2697 api_ready (aTHX_ cb);
2698 sv_setiv (cb, 0); /* signal waiter */
2699 }
2700
2701 SvREFCNT_dec (cb);
2702
2703 --count;
2704 }
2705}
2706
2707static int
2708slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2709{
2710 /* if we are about to throw, also stop waiting */
2711 return SvROK ((SV *)frame->data) && !CORO_THROW;
2712}
2713
2714static void
2715slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 AV *av = (AV *)SvRV (arg [0]);
2718
2719 if (items >= 2)
2720 {
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722 av_push (av, SvREFCNT_inc_NN (cb_cv));
2723
2724 if (SvIVX (AvARRAY (av)[0]))
2725 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2726
2727 frame->prepare = prepare_nop;
2728 frame->check = slf_check_nop;
2729 }
2730 else if (SvIVX (AvARRAY (av)[0]))
2731 {
2732 SvIVX (AvARRAY (av)[0]) = 0;
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2739
2740 av_push (av, waiter);
2741
2742 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_signal_wait;
2745 }
2746}
2747
2748/*****************************************************************************/
2749/* Coro::AIO */
2750
2751#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2752
2753/* helper storage struct */
2754struct io_state
2755{
2756 int errorno;
2757 I32 laststype; /* U16 in 5.10.0 */
2758 int laststatval;
2759 Stat_t statcache;
2760};
2761
2762static void
2763coro_aio_callback (pTHX_ CV *cv)
2764{
2765 dXSARGS;
2766 AV *state = (AV *)S_GENSUB_ARG;
2767 SV *coro = av_pop (state);
2768 SV *data_sv = newSV (sizeof (struct io_state));
2769
2770 av_extend (state, items - 1);
2771
2772 sv_upgrade (data_sv, SVt_PV);
2773 SvCUR_set (data_sv, sizeof (struct io_state));
2774 SvPOK_only (data_sv);
2775
2776 {
2777 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2778
2779 data->errorno = errno;
2780 data->laststype = PL_laststype;
2781 data->laststatval = PL_laststatval;
2782 data->statcache = PL_statcache;
2783 }
2784
2785 /* now build the result vector out of all the parameters and the data_sv */
2786 {
2787 int i;
2788
2789 for (i = 0; i < items; ++i)
2790 av_push (state, SvREFCNT_inc_NN (ST (i)));
2791 }
2792
2793 av_push (state, data_sv);
2794
2795 api_ready (aTHX_ coro);
2796 SvREFCNT_dec (coro);
2797 SvREFCNT_dec ((AV *)state);
2798}
2799
2800static int
2801slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2802{
2803 AV *state = (AV *)frame->data;
2804
2805 /* if we are about to throw, return early */
2806 /* this does not cancel the aio request, but at least */
2807 /* it quickly returns */
2808 if (CORO_THROW)
2809 return 0;
2810
2811 /* one element that is an RV? repeat! */
2812 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2813 return 1;
2814
2815 /* restore status */
2816 {
2817 SV *data_sv = av_pop (state);
2818 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2819
2820 errno = data->errorno;
2821 PL_laststype = data->laststype;
2822 PL_laststatval = data->laststatval;
2823 PL_statcache = data->statcache;
2824
2825 SvREFCNT_dec (data_sv);
2826 }
2827
2828 /* push result values */
2829 {
1853 dSP; 2830 dSP;
2831 int i;
1854 2832
2833 EXTEND (SP, AvFILLp (state) + 1);
2834 for (i = 0; i <= AvFILLp (state); ++i)
2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2836
2837 PUTBACK;
2838 }
2839
2840 return 0;
2841}
2842
2843static void
2844slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2845{
2846 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2847 SV *coro_hv = SvRV (coro_current);
2848 struct coro *coro = SvSTATE_hv (coro_hv);
2849
2850 /* put our coroutine id on the state arg */
2851 av_push (state, SvREFCNT_inc_NN (coro_hv));
2852
2853 /* first see whether we have a non-zero priority and set it as AIO prio */
2854 if (coro->prio)
2855 {
2856 dSP;
2857
2858 static SV *prio_cv;
2859 static SV *prio_sv;
2860
2861 if (expect_false (!prio_cv))
2862 {
2863 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2864 prio_sv = newSViv (0);
2865 }
2866
2867 PUSHMARK (SP);
2868 sv_setiv (prio_sv, coro->prio);
2869 XPUSHs (prio_sv);
2870
2871 PUTBACK;
2872 call_sv (prio_cv, G_VOID | G_DISCARD);
2873 }
2874
2875 /* now call the original request */
2876 {
2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
2880
1855 PUSHMARK (SP); 2881 PUSHMARK (SP);
1856 2882
1857 EXTEND (SP, 3); 2883 /* first push all args to the stack */
1858 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2884 EXTEND (SP, items + 1);
1859 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1860 PUSHs ((SV *)CvGV (ssl_cv));
1861 2885
1862 RETURNOP (ssl_restore.op_first); 2886 for (i = 0; i < items; ++i)
1863} 2887 PUSHs (arg [i]);
1864 2888
1865#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2889 /* now push the callback closure */
2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2891
1867/* declare prototype */ 2892 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 */
1875static OP *
1876pp_set_stacklevel (pTHX)
1877{
1878 dSP;
1879 struct transfer_args ta;
1880 SV **arg = PL_stack_base + TOPMARK + 1;
1881 int items = SP - arg; /* args without function object */
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK; 2893 PUTBACK;
1900 switch (PL_op->op_private & OPpENTERSUB_SSL) 2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
1901 {
1902 case 0:
1903 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1909
1910 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 prepare_cede_notself (aTHX_ &ta);
1923 break;
1924 } 2895 }
1925 2896
1926 TRANSFER (ta, 0); 2897 /* now that the requets is going, we loop toll we have a result */
1927 SPAGAIN; 2898 frame->data = (void *)state;
1928 2899 frame->prepare = prepare_schedule;
1929skip: 2900 frame->check = slf_check_aio_req;
1930 PUTBACK;
1931 SSL_TAIL;
1932 SPAGAIN;
1933 RETURN;
1934} 2901}
1935 2902
1936static void 2903static void
1937coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2904coro_aio_req_xs (pTHX_ CV *cv)
1938{ 2905{
1939 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2906 dXSARGS;
1940 2907
1941 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1942 ssl_cv = cv;
1943 2909
1944 /* we patch the op, and then re-run the whole call */ 2910 XSRETURN_EMPTY;
1945 /* we have to put some dummy argument on the stack for this to work */
1946 ssl_restore.op_next = (OP *)&ssl_restore;
1947 ssl_restore.op_type = OP_NULL;
1948 ssl_restore.op_ppaddr = pp_restore;
1949 ssl_restore.op_first = PL_op;
1950
1951 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1952 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1953
1954 PL_op->op_ppaddr = pp_set_stacklevel;
1955 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1956
1957 PL_op = (OP *)&ssl_restore;
1958} 2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
1959 2918
1960MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1961 2920
1962PROTOTYPES: DISABLE 2921PROTOTYPES: DISABLE
1963 2922
1964BOOT: 2923BOOT:
1965{ 2924{
1966#ifdef USE_ITHREADS 2925#ifdef USE_ITHREADS
1967 MUTEX_INIT (&coro_lock);
1968# if CORO_PTHREAD 2926# if CORO_PTHREAD
1969 coro_thx = PERL_GET_CONTEXT; 2927 coro_thx = PERL_GET_CONTEXT;
1970# endif 2928# endif
1971#endif 2929#endif
1972 BOOT_PAGESIZE; 2930 BOOT_PAGESIZE;
1973 2931
2932 cctx_current = cctx_new_empty ();
2933
1974 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2934 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1975 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2935 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1976 2936
1977 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2937 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1978 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2938 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
1993 main_top_env = PL_top_env; 2953 main_top_env = PL_top_env;
1994 2954
1995 while (main_top_env->je_prev) 2955 while (main_top_env->je_prev)
1996 main_top_env = main_top_env->je_prev; 2956 main_top_env = main_top_env->je_prev;
1997 2957
2958 {
2959 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2960
2961 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2962 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2963
2964 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2965 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2966 }
2967
1998 coroapi.ver = CORO_API_VERSION; 2968 coroapi.ver = CORO_API_VERSION;
1999 coroapi.rev = CORO_API_REVISION; 2969 coroapi.rev = CORO_API_REVISION;
2970
2000 coroapi.transfer = api_transfer; 2971 coroapi.transfer = api_transfer;
2972
2973 coroapi.sv_state = SvSTATE_;
2974 coroapi.execute_slf = api_execute_slf;
2975 coroapi.prepare_nop = prepare_nop;
2976 coroapi.prepare_schedule = prepare_schedule;
2977 coroapi.prepare_cede = prepare_cede;
2978 coroapi.prepare_cede_notself = prepare_cede_notself;
2001 2979
2002 { 2980 {
2003 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2981 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2004 2982
2005 if (!svp) croak ("Time::HiRes is required"); 2983 if (!svp) croak ("Time::HiRes is required");
2006 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2984 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2007 2985
2008 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2986 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2987
2988 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2989 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2009 } 2990 }
2010 2991
2011 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2992 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2012} 2993}
2013 2994
2014SV * 2995SV *
2015new (char *klass, ...) 2996new (char *klass, ...)
2997 ALIAS:
2998 Coro::new = 1
2016 CODE: 2999 CODE:
2017{ 3000{
2018 struct coro *coro; 3001 struct coro *coro;
2019 MAGIC *mg; 3002 MAGIC *mg;
2020 HV *hv; 3003 HV *hv;
3004 SV *cb;
2021 int i; 3005 int i;
3006
3007 if (items > 1)
3008 {
3009 cb = s_get_cv_croak (ST (1));
3010
3011 if (!ix)
3012 {
3013 if (CvISXSUB (cb))
3014 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3015
3016 if (!CvROOT (cb))
3017 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3018 }
3019 }
2022 3020
2023 Newz (0, coro, 1, struct coro); 3021 Newz (0, coro, 1, struct coro);
2024 coro->args = newAV (); 3022 coro->args = newAV ();
2025 coro->flags = CF_NEW; 3023 coro->flags = CF_NEW;
2026 3024
… …
2031 coro->hv = hv = newHV (); 3029 coro->hv = hv = newHV ();
2032 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3030 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2033 mg->mg_flags |= MGf_DUP; 3031 mg->mg_flags |= MGf_DUP;
2034 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3032 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2035 3033
3034 if (items > 1)
3035 {
2036 av_extend (coro->args, items - 1); 3036 av_extend (coro->args, items - 1 + ix - 1);
3037
3038 if (ix)
3039 {
3040 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3041 cb = (SV *)cv_coro_run;
3042 }
3043
3044 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3045
2037 for (i = 1; i < items; i++) 3046 for (i = 2; i < items; i++)
2038 av_push (coro->args, newSVsv (ST (i))); 3047 av_push (coro->args, newSVsv (ST (i)));
3048 }
2039} 3049}
2040 OUTPUT: 3050 OUTPUT:
2041 RETVAL 3051 RETVAL
2042 3052
2043void 3053void
2044_set_stacklevel (...) 3054transfer (...)
2045 ALIAS: 3055 PROTOTYPE: $$
2046 Coro::State::transfer = 1 3056 CODE:
2047 Coro::schedule = 2 3057 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2048 Coro::cede = 3
2049 Coro::cede_notself = 4
2050 CODE:
2051 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2052 3058
2053bool 3059bool
2054_destroy (SV *coro_sv) 3060_destroy (SV *coro_sv)
2055 CODE: 3061 CODE:
2056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3062 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2061_exit (int code) 3067_exit (int code)
2062 PROTOTYPE: $ 3068 PROTOTYPE: $
2063 CODE: 3069 CODE:
2064 _exit (code); 3070 _exit (code);
2065 3071
3072SV *
3073clone (Coro::State coro)
3074 CODE:
3075{
3076#if CORO_CLONE
3077 struct coro *ncoro = coro_clone (aTHX_ coro);
3078 MAGIC *mg;
3079 /* TODO: too much duplication */
3080 ncoro->hv = newHV ();
3081 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3082 mg->mg_flags |= MGf_DUP;
3083 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3084#else
3085 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3086#endif
3087}
3088 OUTPUT:
3089 RETVAL
3090
2066int 3091int
2067cctx_stacksize (int new_stacksize = 0) 3092cctx_stacksize (int new_stacksize = 0)
3093 PROTOTYPE: ;$
2068 CODE: 3094 CODE:
2069 RETVAL = cctx_stacksize; 3095 RETVAL = cctx_stacksize;
2070 if (new_stacksize) 3096 if (new_stacksize)
2071 { 3097 {
2072 cctx_stacksize = new_stacksize; 3098 cctx_stacksize = new_stacksize;
… …
2075 OUTPUT: 3101 OUTPUT:
2076 RETVAL 3102 RETVAL
2077 3103
2078int 3104int
2079cctx_max_idle (int max_idle = 0) 3105cctx_max_idle (int max_idle = 0)
3106 PROTOTYPE: ;$
2080 CODE: 3107 CODE:
2081 RETVAL = cctx_max_idle; 3108 RETVAL = cctx_max_idle;
2082 if (max_idle > 1) 3109 if (max_idle > 1)
2083 cctx_max_idle = max_idle; 3110 cctx_max_idle = max_idle;
2084 OUTPUT: 3111 OUTPUT:
2085 RETVAL 3112 RETVAL
2086 3113
2087int 3114int
2088cctx_count () 3115cctx_count ()
3116 PROTOTYPE:
2089 CODE: 3117 CODE:
2090 RETVAL = cctx_count; 3118 RETVAL = cctx_count;
2091 OUTPUT: 3119 OUTPUT:
2092 RETVAL 3120 RETVAL
2093 3121
2094int 3122int
2095cctx_idle () 3123cctx_idle ()
3124 PROTOTYPE:
2096 CODE: 3125 CODE:
2097 RETVAL = cctx_idle; 3126 RETVAL = cctx_idle;
2098 OUTPUT: 3127 OUTPUT:
2099 RETVAL 3128 RETVAL
2100 3129
2101void 3130void
2102list () 3131list ()
3132 PROTOTYPE:
2103 PPCODE: 3133 PPCODE:
2104{ 3134{
2105 struct coro *coro; 3135 struct coro *coro;
2106 for (coro = coro_first; coro; coro = coro->next) 3136 for (coro = coro_first; coro; coro = coro->next)
2107 if (coro->hv) 3137 if (coro->hv)
… …
2114 eval = 1 3144 eval = 1
2115 CODE: 3145 CODE:
2116{ 3146{
2117 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3147 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2118 { 3148 {
2119 struct coro temp; 3149 struct coro *current = SvSTATE_current;
2120 3150
2121 if (!(coro->flags & CF_RUNNING)) 3151 if (current != coro)
2122 { 3152 {
2123 PUTBACK; 3153 PUTBACK;
2124 save_perl (aTHX_ &temp); 3154 save_perl (aTHX_ current);
2125 load_perl (aTHX_ coro); 3155 load_perl (aTHX_ coro);
3156 SPAGAIN;
2126 } 3157 }
2127 3158
2128 {
2129 dSP;
2130 ENTER;
2131 SAVETMPS;
2132 PUTBACK;
2133 PUSHSTACK; 3159 PUSHSTACK;
3160
2134 PUSHMARK (SP); 3161 PUSHMARK (SP);
3162 PUTBACK;
2135 3163
2136 if (ix) 3164 if (ix)
2137 eval_sv (coderef, 0); 3165 eval_sv (coderef, 0);
2138 else 3166 else
2139 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3167 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2140 3168
2141 POPSTACK; 3169 POPSTACK;
2142 SPAGAIN; 3170 SPAGAIN;
2143 FREETMPS;
2144 LEAVE;
2145 PUTBACK;
2146 }
2147 3171
2148 if (!(coro->flags & CF_RUNNING)) 3172 if (current != coro)
2149 { 3173 {
3174 PUTBACK;
2150 save_perl (aTHX_ coro); 3175 save_perl (aTHX_ coro);
2151 load_perl (aTHX_ &temp); 3176 load_perl (aTHX_ current);
2152 SPAGAIN; 3177 SPAGAIN;
2153 } 3178 }
2154 } 3179 }
2155} 3180}
2156 3181
… …
2160 ALIAS: 3185 ALIAS:
2161 is_ready = CF_READY 3186 is_ready = CF_READY
2162 is_running = CF_RUNNING 3187 is_running = CF_RUNNING
2163 is_new = CF_NEW 3188 is_new = CF_NEW
2164 is_destroyed = CF_DESTROYED 3189 is_destroyed = CF_DESTROYED
3190 is_suspended = CF_SUSPENDED
2165 CODE: 3191 CODE:
2166 RETVAL = boolSV (coro->flags & ix); 3192 RETVAL = boolSV (coro->flags & ix);
2167 OUTPUT: 3193 OUTPUT:
2168 RETVAL 3194 RETVAL
2169 3195
2170void 3196void
2171throw (Coro::State self, SV *throw = &PL_sv_undef) 3197throw (Coro::State self, SV *throw = &PL_sv_undef)
2172 PROTOTYPE: $;$ 3198 PROTOTYPE: $;$
2173 CODE: 3199 CODE:
3200{
3201 struct coro *current = SvSTATE_current;
3202 SV **throwp = self == current ? &CORO_THROW : &self->except;
2174 SvREFCNT_dec (self->throw); 3203 SvREFCNT_dec (*throwp);
3204 SvGETMAGIC (throw);
2175 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3205 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3206}
2176 3207
2177void 3208void
2178api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3209api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3210 PROTOTYPE: $;$
3211 C_ARGS: aTHX_ coro, flags
2179 3212
2180SV * 3213SV *
2181has_cctx (Coro::State coro) 3214has_cctx (Coro::State coro)
2182 PROTOTYPE: $ 3215 PROTOTYPE: $
2183 CODE: 3216 CODE:
2184 RETVAL = boolSV (!!coro->cctx); 3217 /* maybe manage the running flag differently */
3218 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2185 OUTPUT: 3219 OUTPUT:
2186 RETVAL 3220 RETVAL
2187 3221
2188int 3222int
2189is_traced (Coro::State coro) 3223is_traced (Coro::State coro)
… …
2207 OUTPUT: 3241 OUTPUT:
2208 RETVAL 3242 RETVAL
2209 3243
2210void 3244void
2211force_cctx () 3245force_cctx ()
3246 PROTOTYPE:
2212 CODE: 3247 CODE:
2213 struct coro *coro = SvSTATE (coro_current);
2214 coro->cctx->idle_sp = 0; 3248 cctx_current->idle_sp = 0;
2215 3249
2216void 3250void
2217swap_defsv (Coro::State self) 3251swap_defsv (Coro::State self)
2218 PROTOTYPE: $ 3252 PROTOTYPE: $
2219 ALIAS: 3253 ALIAS:
2220 swap_defav = 1 3254 swap_defav = 1
2221 CODE: 3255 CODE:
2222 if (!self->slot) 3256 if (!self->slot)
2223 croak ("cannot swap state with coroutine that has no saved state"); 3257 croak ("cannot swap state with coroutine that has no saved state,");
2224 else 3258 else
2225 { 3259 {
2226 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3260 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2227 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3261 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2228 3262
2229 SV *tmp = *src; *src = *dst; *dst = tmp; 3263 SV *tmp = *src; *src = *dst; *dst = tmp;
2230 } 3264 }
2231 3265
3266void
3267cancel (Coro::State self)
3268 CODE:
3269 coro_state_destroy (aTHX_ self);
3270 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3271
3272
3273SV *
3274enable_times (int enabled = enable_times)
3275 CODE:
3276{
3277 RETVAL = boolSV (enable_times);
3278
3279 if (enabled != enable_times)
3280 {
3281 enable_times = enabled;
3282
3283 coro_times_update ();
3284 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3285 }
3286}
3287 OUTPUT:
3288 RETVAL
3289
3290void
3291times (Coro::State self)
3292 PPCODE:
3293{
3294 struct coro *current = SvSTATE (coro_current);
3295
3296 if (expect_false (current == self))
3297 {
3298 coro_times_update ();
3299 coro_times_add (SvSTATE (coro_current));
3300 }
3301
3302 EXTEND (SP, 2);
3303 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3304 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3305
3306 if (expect_false (current == self))
3307 coro_times_sub (SvSTATE (coro_current));
3308}
3309
2232MODULE = Coro::State PACKAGE = Coro 3310MODULE = Coro::State PACKAGE = Coro
2233 3311
2234BOOT: 3312BOOT:
2235{ 3313{
2236 int i;
2237
2238 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2239 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3314 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2240 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3315 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2241 3316 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3317 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2242 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3318 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2243 SvREADONLY_on (coro_current); 3319 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3320 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3321 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3322 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3323
3324 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3325 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3326 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3327 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2244 3328
2245 coro_stash = gv_stashpv ("Coro", TRUE); 3329 coro_stash = gv_stashpv ("Coro", TRUE);
2246 3330
2247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2249 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2250 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2251 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2252 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2253
2254 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2255 coro_ready[i] = newAV ();
2256 3337
2257 { 3338 {
2258 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3339 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2259 3340
2260 coroapi.schedule = api_schedule; 3341 coroapi.schedule = api_schedule;
3342 coroapi.schedule_to = api_schedule_to;
2261 coroapi.cede = api_cede; 3343 coroapi.cede = api_cede;
2262 coroapi.cede_notself = api_cede_notself; 3344 coroapi.cede_notself = api_cede_notself;
2263 coroapi.ready = api_ready; 3345 coroapi.ready = api_ready;
2264 coroapi.is_ready = api_is_ready; 3346 coroapi.is_ready = api_is_ready;
2265 coroapi.nready = &coro_nready; 3347 coroapi.nready = coro_nready;
2266 coroapi.current = coro_current; 3348 coroapi.current = coro_current;
2267 3349
2268 GCoroAPI = &coroapi; 3350 /*GCoroAPI = &coroapi;*/
2269 sv_setiv (sv, (IV)&coroapi); 3351 sv_setiv (sv, (IV)&coroapi);
2270 SvREADONLY_on (sv); 3352 SvREADONLY_on (sv);
2271 } 3353 }
2272} 3354}
3355
3356void
3357terminate (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3360
3361void
3362schedule (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3365
3366void
3367schedule_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3370
3371void
3372cede_to (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3375
3376void
3377cede (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_cede);
3380
3381void
3382cede_notself (...)
3383 CODE:
3384 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2273 3385
2274void 3386void
2275_set_current (SV *current) 3387_set_current (SV *current)
2276 PROTOTYPE: $ 3388 PROTOTYPE: $
2277 CODE: 3389 CODE:
… …
2280 3392
2281void 3393void
2282_set_readyhook (SV *hook) 3394_set_readyhook (SV *hook)
2283 PROTOTYPE: $ 3395 PROTOTYPE: $
2284 CODE: 3396 CODE:
2285 LOCK;
2286 SvREFCNT_dec (coro_readyhook); 3397 SvREFCNT_dec (coro_readyhook);
3398 SvGETMAGIC (hook);
2287 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3399 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2288 UNLOCK;
2289 3400
2290int 3401int
2291prio (Coro::State coro, int newprio = 0) 3402prio (Coro::State coro, int newprio = 0)
3403 PROTOTYPE: $;$
2292 ALIAS: 3404 ALIAS:
2293 nice = 1 3405 nice = 1
2294 CODE: 3406 CODE:
2295{ 3407{
2296 RETVAL = coro->prio; 3408 RETVAL = coro->prio;
… …
2298 if (items > 1) 3410 if (items > 1)
2299 { 3411 {
2300 if (ix) 3412 if (ix)
2301 newprio = coro->prio - newprio; 3413 newprio = coro->prio - newprio;
2302 3414
2303 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3415 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2304 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3416 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2305 3417
2306 coro->prio = newprio; 3418 coro->prio = newprio;
2307 } 3419 }
2308} 3420}
2309 OUTPUT: 3421 OUTPUT:
… …
2311 3423
2312SV * 3424SV *
2313ready (SV *self) 3425ready (SV *self)
2314 PROTOTYPE: $ 3426 PROTOTYPE: $
2315 CODE: 3427 CODE:
2316 RETVAL = boolSV (api_ready (self)); 3428 RETVAL = boolSV (api_ready (aTHX_ self));
2317 OUTPUT: 3429 OUTPUT:
2318 RETVAL 3430 RETVAL
2319 3431
2320int 3432int
2321nready (...) 3433nready (...)
… …
2323 CODE: 3435 CODE:
2324 RETVAL = coro_nready; 3436 RETVAL = coro_nready;
2325 OUTPUT: 3437 OUTPUT:
2326 RETVAL 3438 RETVAL
2327 3439
2328# for async_pool speedup
2329void 3440void
2330_pool_1 (SV *cb) 3441suspend (Coro::State self)
3442 PROTOTYPE: $
2331 CODE: 3443 CODE:
2332{ 3444 self->flags |= CF_SUSPENDED;
2333 struct coro *coro = SvSTATE (coro_current);
2334 HV *hv = (HV *)SvRV (coro_current);
2335 AV *defav = GvAV (PL_defgv);
2336 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2337 AV *invoke_av;
2338 int i, len;
2339 3445
2340 if (!invoke) 3446void
3447resume (Coro::State self)
3448 PROTOTYPE: $
3449 CODE:
3450 self->flags &= ~CF_SUSPENDED;
3451
3452void
3453_pool_handler (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3456
3457void
3458async_pool (SV *cv, ...)
3459 PROTOTYPE: &@
3460 PPCODE:
3461{
3462 HV *hv = (HV *)av_pop (av_async_pool);
3463 AV *av = newAV ();
3464 SV *cb = ST (0);
3465 int i;
3466
3467 av_extend (av, items - 2);
3468 for (i = 1; i < items; ++i)
3469 av_push (av, SvREFCNT_inc_NN (ST (i)));
3470
3471 if ((SV *)hv == &PL_sv_undef)
2341 { 3472 {
2342 SV *old = PL_diehook; 3473 PUSHMARK (SP);
2343 PL_diehook = 0; 3474 EXTEND (SP, 2);
2344 SvREFCNT_dec (old); 3475 PUSHs (sv_Coro);
2345 croak ("\3async_pool terminate\2\n"); 3476 PUSHs ((SV *)cv_pool_handler);
3477 PUTBACK;
3478 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3479 SPAGAIN;
3480
3481 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2346 } 3482 }
2347 3483
2348 SvREFCNT_dec (coro->saved_deffh);
2349 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2350
2351 hv_store (hv, "desc", sizeof ("desc") - 1,
2352 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2353
2354 invoke_av = (AV *)SvRV (invoke);
2355 len = av_len (invoke_av);
2356
2357 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2358
2359 if (len > 0)
2360 { 3484 {
2361 av_fill (defav, len - 1); 3485 struct coro *coro = SvSTATE_hv (hv);
2362 for (i = 0; i < len; ++i) 3486
2363 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3487 assert (!coro->invoke_cb);
3488 assert (!coro->invoke_av);
3489 coro->invoke_cb = SvREFCNT_inc (cb);
3490 coro->invoke_av = av;
2364 } 3491 }
2365 3492
3493 api_ready (aTHX_ (SV *)hv);
3494
3495 if (GIMME_V != G_VOID)
3496 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3497 else
2366 SvREFCNT_dec (invoke); 3498 SvREFCNT_dec (hv);
2367} 3499}
2368 3500
2369void 3501SV *
2370_pool_2 (SV *cb) 3502rouse_cb ()
3503 PROTOTYPE:
2371 CODE: 3504 CODE:
2372{ 3505 RETVAL = coro_new_rouse_cb (aTHX);
2373 struct coro *coro = SvSTATE (coro_current);
2374
2375 sv_setsv (cb, &PL_sv_undef);
2376
2377 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2378 coro->saved_deffh = 0;
2379
2380 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2381 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2382 {
2383 SV *old = PL_diehook;
2384 PL_diehook = 0;
2385 SvREFCNT_dec (old);
2386 croak ("\3async_pool terminate\2\n");
2387 }
2388
2389 av_clear (GvAV (PL_defgv));
2390 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2391 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2392
2393 coro->prio = 0;
2394
2395 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2396 api_trace (coro_current, 0);
2397
2398 av_push (av_async_pool, newSVsv (coro_current));
2399}
2400
2401#if 0
2402
2403void
2404_generator_call (...)
2405 PROTOTYPE: @
2406 PPCODE:
2407 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2408 xxxx
2409 abort ();
2410
2411SV *
2412gensub (SV *sub, ...)
2413 PROTOTYPE: &;@
2414 CODE:
2415{
2416 struct coro *coro;
2417 MAGIC *mg;
2418 CV *xcv;
2419 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2420 int i;
2421
2422 CvGV (ncv) = CvGV (cv);
2423 CvFILE (ncv) = CvFILE (cv);
2424
2425 Newz (0, coro, 1, struct coro);
2426 coro->args = newAV ();
2427 coro->flags = CF_NEW;
2428
2429 av_extend (coro->args, items - 1);
2430 for (i = 1; i < items; i++)
2431 av_push (coro->args, newSVsv (ST (i)));
2432
2433 CvISXSUB_on (ncv);
2434 CvXSUBANY (ncv).any_ptr = (void *)coro;
2435
2436 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2437
2438 CvXSUB (ncv) = CvXSUB (xcv);
2439 CvANON_on (ncv);
2440
2441 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2442 RETVAL = newRV_noinc ((SV *)ncv);
2443}
2444 OUTPUT: 3506 OUTPUT:
2445 RETVAL 3507 RETVAL
2446 3508
2447#endif
2448
2449
2450MODULE = Coro::State PACKAGE = Coro::AIO
2451
2452void 3509void
2453_get_state (SV *self) 3510rouse_wait (...)
3511 PROTOTYPE: ;$
2454 PPCODE: 3512 PPCODE:
2455{ 3513 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2456 AV *defav = GvAV (PL_defgv);
2457 AV *av = newAV ();
2458 int i;
2459 SV *data_sv = newSV (sizeof (struct io_state));
2460 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2461 SvCUR_set (data_sv, sizeof (struct io_state));
2462 SvPOK_only (data_sv);
2463
2464 data->errorno = errno;
2465 data->laststype = PL_laststype;
2466 data->laststatval = PL_laststatval;
2467 data->statcache = PL_statcache;
2468
2469 av_extend (av, AvFILLp (defav) + 1 + 1);
2470
2471 for (i = 0; i <= AvFILLp (defav); ++i)
2472 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2473
2474 av_push (av, data_sv);
2475
2476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2477
2478 api_ready (self);
2479}
2480 3514
2481void 3515void
2482_set_state (SV *state) 3516on_enter (SV *block)
3517 ALIAS:
3518 on_leave = 1
2483 PROTOTYPE: $ 3519 PROTOTYPE: &
3520 CODE:
3521{
3522 struct coro *coro = SvSTATE_current;
3523 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3524
3525 block = s_get_cv_croak (block);
3526
3527 if (!*avp)
3528 *avp = newAV ();
3529
3530 av_push (*avp, SvREFCNT_inc (block));
3531
3532 if (!ix)
3533 on_enterleave_call (aTHX_ block);
3534
3535 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3536 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3537 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3538}
3539
3540
3541MODULE = Coro::State PACKAGE = PerlIO::cede
3542
3543BOOT:
3544 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3545
3546
3547MODULE = Coro::State PACKAGE = Coro::Semaphore
3548
3549SV *
3550new (SV *klass, SV *count = 0)
3551 CODE:
3552{
3553 int semcnt = 1;
3554
3555 if (count)
3556 {
3557 SvGETMAGIC (count);
3558
3559 if (SvOK (count))
3560 semcnt = SvIV (count);
3561 }
3562
3563 RETVAL = sv_bless (
3564 coro_waitarray_new (aTHX_ semcnt),
3565 GvSTASH (CvGV (cv))
3566 );
3567}
3568 OUTPUT:
3569 RETVAL
3570
3571# helper for Coro::Channel and others
3572SV *
3573_alloc (int count)
3574 CODE:
3575 RETVAL = coro_waitarray_new (aTHX_ count);
3576 OUTPUT:
3577 RETVAL
3578
3579SV *
3580count (SV *self)
3581 CODE:
3582 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3583 OUTPUT:
3584 RETVAL
3585
3586void
3587up (SV *self, int adjust = 1)
3588 ALIAS:
3589 adjust = 1
3590 CODE:
3591 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3592
3593void
3594down (...)
3595 CODE:
3596 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3597
3598void
3599wait (...)
3600 CODE:
3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3602
3603void
3604try (SV *self)
3605 PPCODE:
3606{
3607 AV *av = (AV *)SvRV (self);
3608 SV *count_sv = AvARRAY (av)[0];
3609 IV count = SvIVX (count_sv);
3610
3611 if (count > 0)
3612 {
3613 --count;
3614 SvIVX (count_sv) = count;
3615 XSRETURN_YES;
3616 }
3617 else
3618 XSRETURN_NO;
3619}
3620
3621void
3622waiters (SV *self)
3623 PPCODE:
3624{
3625 AV *av = (AV *)SvRV (self);
3626 int wcount = AvFILLp (av) + 1 - 1;
3627
3628 if (GIMME_V == G_SCALAR)
3629 XPUSHs (sv_2mortal (newSViv (wcount)));
3630 else
3631 {
3632 int i;
3633 EXTEND (SP, wcount);
3634 for (i = 1; i <= wcount; ++i)
3635 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3636 }
3637}
3638
3639MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3640
3641void
3642_may_delete (SV *sem, int count, int extra_refs)
2484 PPCODE: 3643 PPCODE:
2485{ 3644{
2486 AV *av = (AV *)SvRV (state); 3645 AV *av = (AV *)SvRV (sem);
2487 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2488 int i;
2489 3646
2490 errno = data->errorno; 3647 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2491 PL_laststype = data->laststype; 3648 && AvFILLp (av) == 0 /* no waiters, just count */
2492 PL_laststatval = data->laststatval; 3649 && SvIV (AvARRAY (av)[0]) == count)
2493 PL_statcache = data->statcache; 3650 XSRETURN_YES;
2494 3651
3652 XSRETURN_NO;
3653}
3654
3655MODULE = Coro::State PACKAGE = Coro::Signal
3656
3657SV *
3658new (SV *klass)
3659 CODE:
3660 RETVAL = sv_bless (
3661 coro_waitarray_new (aTHX_ 0),
3662 GvSTASH (CvGV (cv))
3663 );
3664 OUTPUT:
3665 RETVAL
3666
3667void
3668wait (...)
3669 CODE:
3670 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3671
3672void
3673broadcast (SV *self)
3674 CODE:
3675{
3676 AV *av = (AV *)SvRV (self);
3677 coro_signal_wake (aTHX_ av, AvFILLp (av));
3678}
3679
3680void
3681send (SV *self)
3682 CODE:
3683{
3684 AV *av = (AV *)SvRV (self);
3685
2495 EXTEND (SP, AvFILLp (av)); 3686 if (AvFILLp (av))
2496 for (i = 0; i < AvFILLp (av); ++i) 3687 coro_signal_wake (aTHX_ av, 1);
2497 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3688 else
3689 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2498} 3690}
3691
3692IV
3693awaited (SV *self)
3694 CODE:
3695 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3696 OUTPUT:
3697 RETVAL
2499 3698
2500 3699
2501MODULE = Coro::State PACKAGE = Coro::AnyEvent 3700MODULE = Coro::State PACKAGE = Coro::AnyEvent
2502 3701
2503BOOT: 3702BOOT:
2504 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3703 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2505 3704
2506SV * 3705void
2507_schedule (...) 3706_schedule (...)
2508 PROTOTYPE: @
2509 CODE: 3707 CODE:
2510{ 3708{
2511 static int incede; 3709 static int incede;
2512 3710
2513 api_cede_notself (); 3711 api_cede_notself (aTHX);
2514 3712
2515 ++incede; 3713 ++incede;
2516 while (coro_nready >= incede && api_cede ()) 3714 while (coro_nready >= incede && api_cede (aTHX))
2517 ; 3715 ;
2518 3716
2519 sv_setsv (sv_activity, &PL_sv_undef); 3717 sv_setsv (sv_activity, &PL_sv_undef);
2520 if (coro_nready >= incede) 3718 if (coro_nready >= incede)
2521 { 3719 {
2522 PUSHMARK (SP); 3720 PUSHMARK (SP);
2523 PUTBACK; 3721 PUTBACK;
2524 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3722 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2525 SPAGAIN;
2526 } 3723 }
2527 3724
2528 --incede; 3725 --incede;
2529} 3726}
2530 3727
2531 3728
2532MODULE = Coro::State PACKAGE = PerlIO::cede 3729MODULE = Coro::State PACKAGE = Coro::AIO
2533 3730
2534BOOT: 3731void
2535 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3732_register (char *target, char *proto, SV *req)
3733 CODE:
3734{
3735 SV *req_cv = s_get_cv_croak (req);
3736 /* newXSproto doesn't return the CV on 5.8 */
3737 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3738 sv_setpv ((SV *)slf_cv, proto);
3739 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3740}
2536 3741
3742MODULE = Coro::State PACKAGE = Coro::Select
3743
3744void
3745patch_pp_sselect ()
3746 CODE:
3747 if (!coro_old_pp_sselect)
3748 {
3749 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3750 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3751 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3752 }
3753
3754void
3755unpatch_pp_sselect ()
3756 CODE:
3757 if (coro_old_pp_sselect)
3758 {
3759 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3760 coro_old_pp_sselect = 0;
3761 }
3762
3763

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