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Comparing Coro/Coro/State.xs (file contents):
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC vs.
Revision 1.369 by root, Thu Aug 13 02:48:32 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;
203 147
204/* Coro::AnyEvent */ 148/* Coro::AnyEvent */
205static SV *sv_activity; 149static SV *sv_activity;
150
151/* enable processtime/realtime profiling */
152static char enable_times;
153typedef U32 coro_ts[2];
154static coro_ts time_real, time_cpu;
155static char times_valid;
206 156
207static struct coro_cctx *cctx_first; 157static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 158static int cctx_count, cctx_idle;
209 159
210enum { 160enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 165 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 166 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 167};
218 168
219/* this is a structure representing a c-level coroutine */ 169/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 170typedef struct coro_cctx
171{
221 struct coro_cctx *next; 172 struct coro_cctx *next;
222 173
223 /* the stack */ 174 /* the stack */
224 void *sptr; 175 void *sptr;
225 size_t ssize; 176 size_t ssize;
… …
235 int valgrind_id; 186 int valgrind_id;
236#endif 187#endif
237 unsigned char flags; 188 unsigned char flags;
238} coro_cctx; 189} coro_cctx;
239 190
191coro_cctx *cctx_current; /* the currently running cctx */
192
193/*****************************************************************************/
194
240enum { 195enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
245}; 201};
246 202
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 203/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 204typedef struct
205{
249 SV *defsv; 206 SV *defsv;
250 AV *defav; 207 AV *defav;
251 SV *errsv; 208 SV *errsv;
252 SV *irsgv; 209 SV *irsgv;
210 HV *hinthv;
253#define VAR(name,type) type name; 211#define VAR(name,type) type name;
254# include "state.h" 212# include "state.h"
255#undef VAR 213#undef VAR
256} perl_slots; 214} perl_slots;
257 215
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 217
260/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
261struct coro { 219struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 220 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 221 coro_cctx *cctx;
264 222
265 /* process data */ 223 /* ready queue */
224 struct coro *next_ready;
225
226 /* state data */
227 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 228 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 229 perl_slots *slot; /* basically the saved sp */
268 230
231 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 232 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 233 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 234 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 235 HV *hv; /* the perl hash associated with this coro, if any */
236 void (*on_destroy)(pTHX_ struct coro *coro);
273 237
274 /* statistics */ 238 /* statistics */
275 int usecount; /* number of transfers to this coro */ 239 int usecount; /* number of transfers to this coro */
276 240
277 /* coro process data */ 241 /* coro process data */
278 int prio; 242 int prio;
279 SV *throw; /* exception to be thrown */ 243 SV *except; /* exception to be thrown */
244 SV *rouse_cb;
280 245
281 /* async_pool */ 246 /* async_pool */
282 SV *saved_deffh; 247 SV *saved_deffh;
248 SV *invoke_cb;
249 AV *invoke_av;
250
251 /* on_enter/on_leave */
252 AV *on_enter;
253 AV *on_leave;
254
255 /* times */
256 coro_ts t_cpu, t_real;
283 257
284 /* linked list */ 258 /* linked list */
285 struct coro *next, *prev; 259 struct coro *next, *prev;
286}; 260};
287 261
288typedef struct coro *Coro__State; 262typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 263typedef struct coro *Coro__State_or_hashref;
290 264
265/* the following variables are effectively part of the perl context */
266/* and get copied between struct coro and these variables */
267/* the mainr easonw e don't support windows process emulation */
268static struct CoroSLF slf_frame; /* the current slf frame */
269
291/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
292 271
293#define PRIO_MAX 3 272#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 273#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 274#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 275#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 276#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 277#define CORO_PRIO_MIN -4
299 278
300/* for Coro.pm */ 279/* for Coro.pm */
301static SV *coro_current; 280static SV *coro_current;
302static SV *coro_readyhook; 281static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 282static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
283static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 284static struct coro *coro_first;
305#define coro_nready coroapi.nready 285#define coro_nready coroapi.nready
286
287/** Coro::Select ************************************************************/
288
289static OP *(*coro_old_pp_sselect) (pTHX);
290static SV *coro_select_select;
291
292/* horrible hack, but if it works... */
293static OP *
294coro_pp_sselect (aTHX)
295{
296 dSP;
297 PUSHMARK (SP - 4); /* fake argument list */
298 XPUSHs (coro_select_select);
299 PUTBACK;
300
301 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
302 PL_op->op_flags |= OPf_STACKED;
303 PL_op->op_private = 0;
304 return PL_ppaddr [OP_ENTERSUB](aTHX);
305}
306 306
307/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308 308
309static SV * 309static SV *
310coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 334 get_hv (name, create);
335#endif 335#endif
336 return get_hv (name, create); 336 return get_hv (name, create);
337} 337}
338 338
339INLINE void
340coro_times_update ()
341{
342#ifdef coro_clock_gettime
343 struct timespec ts;
344
345 ts.tv_sec = ts.tv_nsec = 0;
346 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
347 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
348
349 ts.tv_sec = ts.tv_nsec = 0;
350 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
351 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
352#else
353 dTHX;
354 UV tv[2];
355
356 u2time (aTHX_ tv);
357 time_real [0] = tv [0];
358 time_real [1] = tv [1] * 1000;
359#endif
360}
361
362INLINE void
363coro_times_add (struct coro *c)
364{
365 c->t_real [1] += time_real [1];
366 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
367 c->t_real [0] += time_real [0];
368
369 c->t_cpu [1] += time_cpu [1];
370 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
371 c->t_cpu [0] += time_cpu [0];
372}
373
374INLINE void
375coro_times_sub (struct coro *c)
376{
377 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
378 c->t_real [1] -= time_real [1];
379 c->t_real [0] -= time_real [0];
380
381 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
382 c->t_cpu [1] -= time_cpu [1];
383 c->t_cpu [0] -= time_cpu [0];
384}
385
386/*****************************************************************************/
387/* magic glue */
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391
392#define CORO_MAGIC_NN(sv, type) \
393 (expect_true (SvMAGIC (sv)->mg_type == type) \
394 ? SvMAGIC (sv) \
395 : mg_find (sv, type))
396
397#define CORO_MAGIC(sv, type) \
398 (expect_true (SvMAGIC (sv)) \
399 ? CORO_MAGIC_NN (sv, type) \
400 : 0)
401
402#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
403#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
404
405INLINE struct coro *
406SvSTATE_ (pTHX_ SV *coro)
407{
408 HV *stash;
409 MAGIC *mg;
410
411 if (SvROK (coro))
412 coro = SvRV (coro);
413
414 if (expect_false (SvTYPE (coro) != SVt_PVHV))
415 croak ("Coro::State object required");
416
417 stash = SvSTASH (coro);
418 if (expect_false (stash != coro_stash && stash != coro_state_stash))
419 {
420 /* very slow, but rare, check */
421 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
422 croak ("Coro::State object required");
423 }
424
425 mg = CORO_MAGIC_state (coro);
426 return (struct coro *)mg->mg_ptr;
427}
428
429#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
430
431/* faster than SvSTATE, but expects a coroutine hv */
432#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
433#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
434
435/*****************************************************************************/
436/* padlist management and caching */
437
339static AV * 438static AV *
340coro_clone_padlist (pTHX_ CV *cv) 439coro_derive_padlist (pTHX_ CV *cv)
341{ 440{
342 AV *padlist = CvPADLIST (cv); 441 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 442 AV *newpadlist, *newpad;
344 443
345 newpadlist = newAV (); 444 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 449 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 450#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 451 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 452 --AvFILLp (padlist);
354 453
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 454 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 455 av_store (newpadlist, 1, (SV *)newpad);
357 456
358 return newpadlist; 457 return newpadlist;
359} 458}
360 459
361static void 460static void
362free_padlist (pTHX_ AV *padlist) 461free_padlist (pTHX_ AV *padlist)
363{ 462{
364 /* may be during global destruction */ 463 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 464 if (!IN_DESTRUCT)
366 { 465 {
367 I32 i = AvFILLp (padlist); 466 I32 i = AvFILLp (padlist);
368 while (i >= 0) 467
468 while (i > 0) /* special-case index 0 */
369 { 469 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 470 /* we try to be extra-careful here */
371 if (svp) 471 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 472 I32 j = AvFILLp (av);
373 SV *sv; 473
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 474 while (j >= 0)
475 SvREFCNT_dec (AvARRAY (av)[j--]);
476
477 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 478 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 479 }
380 480
481 SvREFCNT_dec (AvARRAY (padlist)[0]);
482
483 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 484 SvREFCNT_dec ((SV*)padlist);
382 } 485 }
383} 486}
384 487
385static int 488static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 489coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 490{
388 AV *padlist; 491 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 492 AV *av = (AV *)mg->mg_obj;
493
494 /* perl manages to free our internal AV and _then_ call us */
495 if (IN_DESTRUCT)
496 return 0;
390 497
391 /* casting is fun. */ 498 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 499 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 500 free_padlist (aTHX_ padlist);
394 501
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 502 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 503
397 return 0; 504 return 0;
398} 505}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 506
403static MGVTBL coro_cv_vtbl = { 507static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 508 0, 0, 0, 0,
405 coro_cv_free 509 coro_cv_free
406}; 510};
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))
443 511
444/* the next two functions merely cache the padlists */ 512/* the next two functions merely cache the padlists */
445static void 513static void
446get_padlist (pTHX_ CV *cv) 514get_padlist (pTHX_ CV *cv)
447{ 515{
… …
453 else 521 else
454 { 522 {
455#if CORO_PREFER_PERL_FUNCTIONS 523#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 524 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 525 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 526 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 527 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 528 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 529 SvREFCNT_dec (cp);
462#else 530#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 531 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 532#endif
465 } 533 }
466} 534}
467 535
468static void 536static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 543 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 544
477 av = (AV *)mg->mg_obj; 545 av = (AV *)mg->mg_obj;
478 546
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 547 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 548 av_extend (av, AvFILLp (av) + 1);
481 549
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 550 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 551}
484 552
485/** load & save, init *******************************************************/ 553/** load & save, init *******************************************************/
554
555static void
556on_enterleave_call (pTHX_ SV *cb);
486 557
487static void 558static void
488load_perl (pTHX_ Coro__State c) 559load_perl (pTHX_ Coro__State c)
489{ 560{
490 perl_slots *slot = c->slot; 561 perl_slots *slot = c->slot;
491 c->slot = 0; 562 c->slot = 0;
492 563
493 PL_mainstack = c->mainstack; 564 PL_mainstack = c->mainstack;
494 565
495 GvSV (PL_defgv) = slot->defsv; 566 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 567 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 568 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 569 GvSV (irsgv) = slot->irsgv;
570 GvHV (PL_hintgv) = slot->hinthv;
499 571
500 #define VAR(name,type) PL_ ## name = slot->name; 572 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 573 # include "state.h"
502 #undef VAR 574 #undef VAR
503 575
… …
514 CvPADLIST (cv) = (AV *)POPs; 586 CvPADLIST (cv) = (AV *)POPs;
515 } 587 }
516 588
517 PUTBACK; 589 PUTBACK;
518 } 590 }
591
592 slf_frame = c->slf_frame;
593 CORO_THROW = c->except;
594
595 if (expect_false (enable_times))
596 {
597 if (expect_false (!times_valid))
598 coro_times_update ();
599
600 coro_times_sub (c);
601 }
602
603 if (expect_false (c->on_enter))
604 {
605 int i;
606
607 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
608 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
609 }
519} 610}
520 611
521static void 612static void
522save_perl (pTHX_ Coro__State c) 613save_perl (pTHX_ Coro__State c)
523{ 614{
615 if (expect_false (c->on_leave))
616 {
617 int i;
618
619 for (i = AvFILLp (c->on_leave); i >= 0; --i)
620 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
621 }
622
623 times_valid = 0;
624
625 if (expect_false (enable_times))
626 {
627 coro_times_update (); times_valid = 1;
628 coro_times_add (c);
629 }
630
631 c->except = CORO_THROW;
632 c->slf_frame = slf_frame;
633
524 { 634 {
525 dSP; 635 dSP;
526 I32 cxix = cxstack_ix; 636 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 637 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 638 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 648 {
539 while (expect_true (cxix >= 0)) 649 while (expect_true (cxix >= 0))
540 { 650 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 651 PERL_CONTEXT *cx = &ccstk[cxix--];
542 652
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 653 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 654 {
545 CV *cv = cx->blk_sub.cv; 655 CV *cv = cx->blk_sub.cv;
546 656
547 if (expect_true (CvDEPTH (cv))) 657 if (expect_true (CvDEPTH (cv)))
548 { 658 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 682 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 683 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 684 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 685 if (SLOT_COUNT >= 3) CXINC;
576 { 686 {
577 int i; 687 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 688 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 689 CXINC;
580 } 690 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 691 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 692
583 c->mainstack = PL_mainstack; 693 c->mainstack = PL_mainstack;
584 694
585 { 695 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 696 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 697
588 slot->defav = GvAV (PL_defgv); 698 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 699 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 700 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 701 slot->irsgv = GvSV (irsgv);
702 slot->hinthv = GvHV (PL_hintgv);
592 703
593 #define VAR(name,type) slot->name = PL_ ## name; 704 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 705 # include "state.h"
595 #undef VAR 706 #undef VAR
596 } 707 }
597} 708}
598 709
599/* 710/*
600 * allocate various perl stacks. This is an exact copy 711 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 712 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 713 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 714 * not usually need a lot of stackspace.
604 */ 715 */
605#if CORO_PREFER_PERL_FUNCTIONS 716#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 717# define coro_init_stacks(thx) init_stacks ()
607#else 718#else
608static void 719static void
609coro_init_stacks (pTHX) 720coro_init_stacks (pTHX)
610{ 721{
611 PL_curstackinfo = new_stackinfo(32, 8); 722 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 785#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 786 Safefree (PL_retstack);
676#endif 787#endif
677} 788}
678 789
790#define CORO_RSS \
791 rss += sizeof (SYM (curstackinfo)); \
792 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
793 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
794 rss += SYM (tmps_max) * sizeof (SV *); \
795 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
796 rss += SYM (scopestack_max) * sizeof (I32); \
797 rss += SYM (savestack_max) * sizeof (ANY);
798
679static size_t 799static size_t
680coro_rss (pTHX_ struct coro *coro) 800coro_rss (pTHX_ struct coro *coro)
681{ 801{
682 size_t rss = sizeof (*coro); 802 size_t rss = sizeof (*coro);
683 803
684 if (coro->mainstack) 804 if (coro->mainstack)
685 { 805 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 806 if (coro->flags & CF_RUNNING)
690 { 807 {
691 slot = &tmp_slot; 808 #define SYM(sym) PL_ ## sym
692 809 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 810 #undef SYM
696 } 811 }
697 else 812 else
698 slot = coro->slot;
699
700 if (slot)
701 { 813 {
702 rss += sizeof (slot->curstackinfo); 814 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 815 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 816 #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 } 817 }
714 } 818 }
715 819
716 return rss; 820 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 821}
745 822
746/** coroutine stack handling ************************************************/ 823/** coroutine stack handling ************************************************/
747 824
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 825static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 834#endif
758 835
759/* 836/*
760 * This overrides the default magic get method of %SIG elements. 837 * 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 838 * 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 839 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 840 * 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 */ 841 */
768static int 842static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 843coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 844{
771 const char *s = MgPV_nolen_const (mg); 845 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 898 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 899
826 if (svp) 900 if (svp)
827 { 901 {
828 SV *old = *svp; 902 SV *old = *svp;
829 *svp = newSVsv (sv); 903 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 904 SvREFCNT_dec (old);
831 return 0; 905 return 0;
832 } 906 }
833 } 907 }
834 908
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 909 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 910}
837 911
838static void 912static void
913prepare_nop (pTHX_ struct coro_transfer_args *ta)
914{
915 /* kind of mega-hacky, but works */
916 ta->next = ta->prev = (struct coro *)ta;
917}
918
919static int
920slf_check_nop (pTHX_ struct CoroSLF *frame)
921{
922 return 0;
923}
924
925static int
926slf_check_repeat (pTHX_ struct CoroSLF *frame)
927{
928 return 1;
929}
930
931static UNOP coro_setup_op;
932
933static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 934coro_setup (pTHX_ struct coro *coro)
840{ 935{
841 /* 936 /*
842 * emulate part of the perl startup here. 937 * emulate part of the perl startup here.
843 */ 938 */
… …
845 940
846 PL_runops = RUNOPS_DEFAULT; 941 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 942 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 943 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 944 PL_comppad = 0;
945 PL_comppad_name = 0;
946 PL_comppad_name_fill = 0;
947 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 948 PL_curpm = 0;
851 PL_curpad = 0; 949 PL_curpad = 0;
852 PL_localizing = 0; 950 PL_localizing = 0;
853 PL_dirty = 0; 951 PL_dirty = 0;
854 PL_restartop = 0; 952 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 953#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 954 PL_parser = 0;
857#endif 955#endif
956 PL_hints = 0;
858 957
859 /* recreate the die/warn hooks */ 958 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 959 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); 960 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 961
863 GvSV (PL_defgv) = newSV (0); 962 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 963 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 964 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 965 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
966 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 967 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 968 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 969
870 { 970 {
871 dSP; 971 dSP;
872 UNOP myop; 972 UNOP myop;
873 973
874 Zero (&myop, 1, UNOP); 974 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 975 myop.op_next = Nullop;
976 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 977 myop.op_flags = OPf_WANT_VOID;
877 978
878 PUSHMARK (SP); 979 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 980 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 981 PUTBACK;
881 PL_op = (OP *)&myop; 982 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 983 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 984 }
885 985
886 /* this newly created coroutine might be run on an existing cctx which most 986 /* 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, 987 * 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 */ 988 */
890 SLF_HEAD; 989 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 990 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 991
992 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
993 coro_setup_op.op_next = PL_op;
994 coro_setup_op.op_type = OP_ENTERSUB;
995 coro_setup_op.op_ppaddr = pp_slf;
996 /* no flags etc. required, as an init function won't be called */
997
998 PL_op = (OP *)&coro_setup_op;
999
1000 /* copy throw, in case it was set before coro_setup */
1001 CORO_THROW = coro->except;
1002
1003 if (expect_false (enable_times))
1004 {
1005 coro_times_update ();
1006 coro_times_sub (coro);
1007 }
1008}
1009
893static void 1010static void
894coro_destruct (pTHX_ struct coro *coro) 1011coro_unwind_stacks (pTHX)
895{ 1012{
896 if (!IN_DESTRUCT) 1013 if (!IN_DESTRUCT)
897 { 1014 {
898 /* restore all saved variables and stuff */ 1015 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1016 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1024 POPSTACK_TO (PL_mainstack);
908 1025
909 /* unwind main stack */ 1026 /* unwind main stack */
910 dounwind (-1); 1027 dounwind (-1);
911 } 1028 }
1029}
912 1030
913 SvREFCNT_dec (GvSV (PL_defgv)); 1031static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1032coro_destruct_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1033{
916 SvREFCNT_dec (PL_defoutgv); 1034 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1035
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1036 {
1037 struct coro *current = SvSTATE_current;
1038
1039 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1040
1041 save_perl (aTHX_ current);
1042 load_perl (aTHX_ coro);
1043
1044 coro_unwind_stacks (aTHX);
1045 coro_destruct_stacks (aTHX);
1046
1047 // now save some sv's to be free'd later
1048 svf [0] = GvSV (PL_defgv);
1049 svf [1] = (SV *)GvAV (PL_defgv);
1050 svf [2] = GvSV (PL_errgv);
1051 svf [3] = (SV *)PL_defoutgv;
1052 svf [4] = PL_rs;
1053 svf [5] = GvSV (irsgv);
1054 svf [6] = (SV *)GvHV (PL_hintgv);
1055 svf [7] = PL_diehook;
1056 svf [8] = PL_warnhook;
1057 assert (9 == sizeof (svf) / sizeof (*svf));
1058
1059 load_perl (aTHX_ current);
1060 }
1061
1062 {
1063 unsigned int i;
1064
1065 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1066 SvREFCNT_dec (svf [i]);
1067
923 SvREFCNT_dec (coro->saved_deffh); 1068 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1069 SvREFCNT_dec (coro->rouse_cb);
925 1070 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1071 SvREFCNT_dec (coro->invoke_av);
1072 }
927} 1073}
928 1074
929INLINE void 1075INLINE void
930free_coro_mortal (pTHX) 1076free_coro_mortal (pTHX)
931{ 1077{
… …
939static int 1085static int
940runops_trace (pTHX) 1086runops_trace (pTHX)
941{ 1087{
942 COP *oldcop = 0; 1088 COP *oldcop = 0;
943 int oldcxix = -2; 1089 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1090
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1091 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1092 {
949 PERL_ASYNC_CHECK (); 1093 PERL_ASYNC_CHECK ();
950 1094
951 if (cctx->flags & CC_TRACE_ALL) 1095 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1096 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1097 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1098 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1099 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1100 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1101 AV *av = newAV (); /* return values */
958 SV **cb; 1102 SV **cb;
… …
995 1139
996 if (PL_curcop != &PL_compiling) 1140 if (PL_curcop != &PL_compiling)
997 { 1141 {
998 SV **cb; 1142 SV **cb;
999 1143
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1144 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1145 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1146 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1147
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1148 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1149 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1150 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1151 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1152 SV *fullname = sv_2mortal (newSV (0));
1010 1153
1011 if (isGV (gv)) 1154 if (isGV (gv))
… …
1016 SAVETMPS; 1159 SAVETMPS;
1017 EXTEND (SP, 3); 1160 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1161 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1162 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1163 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1164 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1165 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1166 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); 1167 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1168 SPAGAIN;
1026 FREETMPS; 1169 FREETMPS;
… …
1029 } 1172 }
1030 1173
1031 oldcxix = cxstack_ix; 1174 oldcxix = cxstack_ix;
1032 } 1175 }
1033 1176
1034 if (cctx->flags & CC_TRACE_LINE) 1177 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1178 {
1036 dSP; 1179 dSP;
1037 1180
1038 PL_runops = RUNOPS_DEFAULT; 1181 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1182 ENTER;
… …
1058 1201
1059 TAINT_NOT; 1202 TAINT_NOT;
1060 return 0; 1203 return 0;
1061} 1204}
1062 1205
1206static struct CoroSLF cctx_ssl_frame;
1207
1063static void 1208static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1209slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1210{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1211 ta->prev = 0;
1068} 1212}
1069 1213
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1214static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1215slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1216{
1073/* also initialises PL_top_env */ 1217 *frame = cctx_ssl_frame;
1218
1219 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1220}
1221
1222/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1223static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1224cctx_prepare (pTHX)
1076{ 1225{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1226 PL_top_env = &PL_start_env;
1081 1227
1082 if (cctx->flags & CC_TRACE) 1228 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1229 PL_runops = runops_trace;
1084 1230
1085 Zero (&myop, 1, UNOP); 1231 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1232 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1233 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1234 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1235
1089 PUSHMARK (SP); 1236 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1237 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1238
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1239 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1240 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1241}
1098 1242
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1243/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1244INLINE void
1101transfer_tail (pTHX) 1245transfer_tail (pTHX)
1102{ 1246{
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); 1247 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} 1248}
1119 1249
1120/* 1250/*
1121 * this is a _very_ stripped down perl interpreter ;) 1251 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1252 */
… …
1129# endif 1259# endif
1130#endif 1260#endif
1131 { 1261 {
1132 dTHX; 1262 dTHX;
1133 1263
1134 /* we are the alternative tail to pp_set_stacklevel */ 1264 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1265 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1266 /* PL_nop = PL_nop->op_next */
1140 1267
1141 /* inject a fake subroutine call to cctx_init */ 1268 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1269 cctx_prepare (aTHX);
1143 1270
1144 /* cctx_run is the alternative tail of transfer() */ 1271 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1272 transfer_tail (aTHX);
1146 1273
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1274 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1275 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1276 perl_run (PL_curinterp);
1277 /*
1278 * Unfortunately, there is no way to get at the return values of the
1279 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1280 * runtime errors here, as this is just a random interpreter, not a thread.
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 (pTHX_ SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1632{
1512 struct transfer_args ta; 1633 struct coro_transfer_args ta;
1513 1634
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1636 TRANSFER (ta, 1);
1516} 1637}
1517 1638
1518/** Coro ********************************************************************/ 1639/** Coro ********************************************************************/
1519 1640
1520static void 1641INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1642coro_enq (pTHX_ struct coro *coro)
1522{ 1643{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1524}
1525 1645
1526static 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 *
1527coro_deq (pTHX) 1654coro_deq (pTHX)
1528{ 1655{
1529 int prio; 1656 int prio;
1530 1657
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1532 if (AvFILLp (coro_ready [prio]) >= 0) 1659 {
1533 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 }
1534 1669
1535 return 0; 1670 return 0;
1671}
1672
1673static void
1674invoke_sv_ready_hook_helper (void)
1675{
1676 dTHX;
1677 dSP;
1678
1679 ENTER;
1680 SAVETMPS;
1681
1682 PUSHMARK (SP);
1683 PUTBACK;
1684 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1685
1686 FREETMPS;
1687 LEAVE;
1536} 1688}
1537 1689
1538static int 1690static int
1539api_ready (pTHX_ SV *coro_sv) 1691api_ready (pTHX_ SV *coro_sv)
1540{ 1692{
1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1544
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1693 struct coro *coro = SvSTATE (coro_sv);
1549 1694
1550 if (coro->flags & CF_READY) 1695 if (coro->flags & CF_READY)
1551 return 0; 1696 return 0;
1552 1697
1553 coro->flags |= CF_READY; 1698 coro->flags |= CF_READY;
1554 1699
1555 LOCK; 1700 coro_enq (aTHX_ coro);
1556 1701
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1702 if (!coro_nready++)
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1703 if (coroapi.readyhook)
1559 1704 coroapi.readyhook ();
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1561 ++coro_nready;
1562
1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1583 1705
1584 return 1; 1706 return 1;
1585} 1707}
1586 1708
1587static int 1709static int
1588api_is_ready (pTHX_ SV *coro_sv) 1710api_is_ready (pTHX_ SV *coro_sv)
1589{ 1711{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1712 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1713}
1592 1714
1715/* expects to own a reference to next->hv */
1593INLINE void 1716INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1718{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1719 SV *prev_sv = SvRV (coro_current);
1720
1640 ta->prev = SvSTATE (prev_sv); 1721 ta->prev = SvSTATE_hv (prev_sv);
1722 ta->next = next;
1723
1641 TRANSFER_CHECK (*ta); 1724 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1725
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1726 SvRV_set (coro_current, (SV *)next->hv);
1645 1727
1646 LOCK;
1647 free_coro_mortal (aTHX); 1728 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1729 coro_mortal = prev_sv;
1649 UNLOCK; 1730}
1731
1732static void
1733prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1734{
1735 for (;;)
1736 {
1737 struct coro *next = coro_deq (aTHX);
1738
1739 if (expect_true (next))
1740 {
1741 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else
1745 {
1746 next->flags &= ~CF_READY;
1747 --coro_nready;
1748
1749 prepare_schedule_to (aTHX_ ta, next);
1750 break;
1751 }
1752 }
1753 else
1754 {
1755 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle)))
1758 {
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready;
1762 }
1763 else
1764 {
1765 dSP;
1766
1767 ENTER;
1768 SAVETMPS;
1769
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 call_sv (sv_idle, G_VOID | G_DISCARD);
1773
1774 FREETMPS;
1775 LEAVE;
1776 }
1777 }
1778 }
1650} 1779}
1651 1780
1652INLINE void 1781INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1782prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1783{
1655 api_ready (aTHX_ coro_current); 1784 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1785 prepare_schedule (aTHX_ ta);
1657} 1786}
1658 1787
1659static void 1788INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1789prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1790{
1662 SV *prev = SvRV (coro_current); 1791 SV *prev = SvRV (coro_current);
1663 1792
1664 if (coro_nready) 1793 if (coro_nready)
1665 { 1794 {
1666 prepare_schedule (aTHX_ ta); 1795 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1796 api_ready (aTHX_ prev);
1668 } 1797 }
1669 else 1798 else
1670 ta->prev = ta->next = SvSTATE (prev); 1799 prepare_nop (aTHX_ ta);
1671} 1800}
1672 1801
1673static void 1802static void
1674api_schedule (pTHX) 1803api_schedule (pTHX)
1675{ 1804{
1676 struct transfer_args ta; 1805 struct coro_transfer_args ta;
1677 1806
1678 prepare_schedule (aTHX_ &ta); 1807 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1808 TRANSFER (ta, 1);
1680} 1809}
1681 1810
1811static void
1812api_schedule_to (pTHX_ SV *coro_sv)
1813{
1814 struct coro_transfer_args ta;
1815 struct coro *next = SvSTATE (coro_sv);
1816
1817 SvREFCNT_inc_NN (coro_sv);
1818 prepare_schedule_to (aTHX_ &ta, next);
1819}
1820
1682static int 1821static int
1683api_cede (pTHX) 1822api_cede (pTHX)
1684{ 1823{
1685 struct transfer_args ta; 1824 struct coro_transfer_args ta;
1686 1825
1687 prepare_cede (aTHX_ &ta); 1826 prepare_cede (aTHX_ &ta);
1688 1827
1689 if (expect_true (ta.prev != ta.next)) 1828 if (expect_true (ta.prev != ta.next))
1690 { 1829 {
… …
1698static int 1837static int
1699api_cede_notself (pTHX) 1838api_cede_notself (pTHX)
1700{ 1839{
1701 if (coro_nready) 1840 if (coro_nready)
1702 { 1841 {
1703 struct transfer_args ta; 1842 struct coro_transfer_args ta;
1704 1843
1705 prepare_cede_notself (aTHX_ &ta); 1844 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1845 TRANSFER (ta, 1);
1707 return 1; 1846 return 1;
1708 } 1847 }
… …
1713static void 1852static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1853api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1854{
1716 struct coro *coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1717 1856
1857 if (coro->flags & CF_RUNNING)
1858 croak ("cannot enable tracing on a running coroutine, caught");
1859
1718 if (flags & CC_TRACE) 1860 if (flags & CC_TRACE)
1719 { 1861 {
1720 if (!coro->cctx) 1862 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1863 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1864 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1865 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1866
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1867 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1868 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1869 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1870 {
… …
1733 else 1875 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1876 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1877 }
1736} 1878}
1737 1879
1738#if 0 1880static void
1881coro_call_on_destroy (pTHX_ struct coro *coro)
1882{
1883 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1884 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1885
1886 if (on_destroyp)
1887 {
1888 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1889
1890 while (AvFILLp (on_destroy) >= 0)
1891 {
1892 dSP; /* don't disturb outer sp */
1893 SV *cb = av_pop (on_destroy);
1894
1895 PUSHMARK (SP);
1896
1897 if (statusp)
1898 {
1899 int i;
1900 AV *status = (AV *)SvRV (*statusp);
1901 EXTEND (SP, AvFILLp (status) + 1);
1902
1903 for (i = 0; i <= AvFILLp (status); ++i)
1904 PUSHs (AvARRAY (status)[i]);
1905 }
1906
1907 PUTBACK;
1908 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1909 }
1910 }
1911}
1912
1913static void
1914slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{
1916 int i;
1917 HV *hv = (HV *)SvRV (coro_current);
1918 AV *av = newAV ();
1919
1920 /* items are actually not so common, so optimise for this case */
1921 if (items)
1922 {
1923 av_extend (av, items - 1);
1924
1925 for (i = 0; i < items; ++i)
1926 av_push (av, SvREFCNT_inc_NN (arg [i]));
1927 }
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
1739static int 1945static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1946slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1947{
1742 AV *padlist; 1948 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1949 struct coro *coro = (struct coro *)frame->data;
1744 1950
1745 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 }
1746 2075
1747 return 0; 2076 return 0;
1748} 2077}
1749 2078
1750static MGVTBL coro_gensub_vtbl = { 2079static void
1751 0, 0, 0, 0, 2080slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2081{
1753}; 2082 SV *cb;
1754#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}
1755 2417
1756/*****************************************************************************/ 2418/*****************************************************************************/
1757/* PerlIO::cede */ 2419/* PerlIO::cede */
1758 2420
1759typedef struct 2421typedef struct
… …
1827 PerlIOBuf_get_cnt, 2489 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2490 PerlIOBuf_set_ptrcnt,
1829}; 2491};
1830 2492
1831/*****************************************************************************/ 2493/*****************************************************************************/
2494/* Coro::Semaphore & Coro::Signal */
1832 2495
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2496static SV *
1843pp_restore (pTHX) 2497coro_waitarray_new (pTHX_ int count)
1844{ 2498{
1845 dSP; 2499 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2500 AV *av = newAV ();
2501 SV **ary;
1846 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;
1847 PUSHMARK (SP); 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 }
1848 2554
1849 EXTEND (SP, 3); 2555 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2556 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2557}
1856 2558
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 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}
1858 2565
1859enum { 2566static int
1860 CORO_SLF_CUSTOM = 0, 2567slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2568{
1862 CORO_SLF_TRANSFER = 2 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;
1863}; 2760};
1864 2761
1865/* declare prototype */ 2762static void
1866XS(XS_Coro__State__set_stacklevel); 2763coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 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 {
1877 dSP; 2830 dSP;
1878 struct transfer_args ta; 2831 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 SV *gv = *sp;
1884 2832
1885 /* do a quick consistency check on the "function" object, and if it isn't */ 2833 EXTEND (SP, AvFILLp (state) + 1);
1886 /* for us, divert to the real entersub */ 2834 for (i = 0; i <= AvFILLp (state); ++i)
1887 if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel) 2835 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1888 return PL_ppaddr[OP_ENTERSUB](aTHX);
1889 2836
1890 /* pop args */
1891 SP = PL_stack_base + POPMARK;
1892
1893 if (!(PL_op->op_flags & OPf_STACKED))
1894 {
1895 /* ampersand-form of call, use @_ instead of stack */
1896 AV *av = GvAV (PL_defgv);
1897 arg = AvARRAY (av);
1898 items = AvFILLp (av) + 1;
1899 }
1900
1901 PUTBACK; 2837 PUTBACK;
2838 }
1902 2839
1903 if (!ix) 2840 return 0;
1904 { 2841}
1905 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2842
1906 ix = slf->prepare (aTHX_ arg, items); 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)
1907 } 2855 {
2856 dSP;
1908 2857
1909 switch (ix) 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);
1910 { 2873 }
1911 case CORO_SLF_SET_STACKLEVEL:
1912 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913 break;
1914 2874
1915 case CORO_SLF_TRANSFER: 2875 /* now call the original request */
1916 if (items != 2) 2876 {
1917 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2877 dSP;
2878 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2879 int i;
1918 2880
1919 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2881 PUSHMARK (SP);
1920 break;
1921 2882
1922 case CORO_SLF_SCHEDULE: 2883 /* first push all args to the stack */
1923 prepare_schedule (aTHX_ &ta); 2884 EXTEND (SP, items + 1);
1924 break;
1925 2885
1926 case CORO_SLF_CEDE: 2886 for (i = 0; i < items; ++i)
1927 prepare_cede (aTHX_ &ta); 2887 PUSHs (arg [i]);
1928 break;
1929 2888
1930 case CORO_SLF_CEDE_NOTSELF: 2889 /* now push the callback closure */
1931 prepare_cede_notself (aTHX_ &ta); 2890 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1932 break;
1933 2891
1934 default: 2892 /* now call the AIO function - we assume our request is uncancelable */
1935 abort ();
1936 }
1937
1938 do
1939 TRANSFER (ta, 0);
1940 while (slf && slf->check (aTHX));
1941
1942 SPAGAIN;
1943
1944 PUTBACK; 2893 PUTBACK;
1945 SLF_TAIL; 2894 call_sv ((SV *)req, G_VOID | G_DISCARD);
1946 SPAGAIN; 2895 }
1947 RETURN;
1948}
1949 2896
1950static void 2897 /* now that the requets is going, we loop toll we have a result */
1951coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2898 frame->data = (void *)state;
1952{ 2899 frame->prepare = prepare_schedule;
1953 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2900 frame->check = slf_check_aio_req;
1954
1955 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956 slf_cv = cv;
1957
1958 /* we patch the op, and then re-run the whole call */
1959 /* we have to put the same argument on the stack for this to work */
1960 /* and this will be done by pp_restore */
1961 slf_restore.op_next = (OP *)&slf_restore;
1962 slf_restore.op_type = OP_NULL;
1963 slf_restore.op_ppaddr = pp_restore;
1964 slf_restore.op_first = PL_op;
1965
1966 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969 PL_op->op_ppaddr = pp_slf;
1970 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972 PL_op = (OP *)&slf_restore;
1973} 2901}
1974 2902
1975static void 2903static void
1976api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2904coro_aio_req_xs (pTHX_ CV *cv)
1977{ 2905{
1978 CvXSUBANY (cv).any_ptr = (void *)slf; 2906 dXSARGS;
1979 coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items); 2907
2908 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2909
2910 XSRETURN_EMPTY;
2911}
2912
2913/*****************************************************************************/
2914
2915#if CORO_CLONE
2916# include "clone.c"
2917#endif
2918
2919/*****************************************************************************/
2920
2921static SV *
2922coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2923{
2924 SV *coro_sv;
2925 struct coro *coro;
2926 MAGIC *mg;
2927 HV *hv;
2928 SV *cb;
2929 int i;
2930
2931 if (argc > 0)
2932 {
2933 cb = s_get_cv_croak (argv [0]);
2934
2935 if (!is_coro)
2936 {
2937 if (CvISXSUB (cb))
2938 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2939
2940 if (!CvROOT (cb))
2941 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2942 }
2943 }
2944
2945 Newz (0, coro, 1, struct coro);
2946 coro->args = newAV ();
2947 coro->flags = CF_NEW;
2948
2949 if (coro_first) coro_first->prev = coro;
2950 coro->next = coro_first;
2951 coro_first = coro;
2952
2953 coro->hv = hv = newHV ();
2954 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2955 mg->mg_flags |= MGf_DUP;
2956 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2957
2958 if (argc > 0)
2959 {
2960 av_extend (coro->args, argc + is_coro - 1);
2961
2962 if (is_coro)
2963 {
2964 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2965 cb = (SV *)cv_coro_run;
2966 }
2967
2968 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2969
2970 for (i = 1; i < argc; i++)
2971 av_push (coro->args, newSVsv (argv [i]));
2972 }
2973
2974 return coro_sv;
1980} 2975}
1981 2976
1982MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2977MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1983 2978
1984PROTOTYPES: DISABLE 2979PROTOTYPES: DISABLE
1985 2980
1986BOOT: 2981BOOT:
1987{ 2982{
1988#ifdef USE_ITHREADS 2983#ifdef USE_ITHREADS
1989 MUTEX_INIT (&coro_lock);
1990# if CORO_PTHREAD 2984# if CORO_PTHREAD
1991 coro_thx = PERL_GET_CONTEXT; 2985 coro_thx = PERL_GET_CONTEXT;
1992# endif 2986# endif
1993#endif 2987#endif
1994 BOOT_PAGESIZE; 2988 BOOT_PAGESIZE;
1995 2989
2990 cctx_current = cctx_new_empty ();
2991
1996 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2992 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1997 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2993 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1998 2994
1999 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2995 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2000 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2996 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2015 main_top_env = PL_top_env; 3011 main_top_env = PL_top_env;
2016 3012
2017 while (main_top_env->je_prev) 3013 while (main_top_env->je_prev)
2018 main_top_env = main_top_env->je_prev; 3014 main_top_env = main_top_env->je_prev;
2019 3015
3016 {
3017 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3018
3019 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3020 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3021
3022 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3023 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3024 }
3025
2020 coroapi.ver = CORO_API_VERSION; 3026 coroapi.ver = CORO_API_VERSION;
2021 coroapi.rev = CORO_API_REVISION; 3027 coroapi.rev = CORO_API_REVISION;
3028
2022 coroapi.transfer = api_transfer; 3029 coroapi.transfer = api_transfer;
3030
3031 coroapi.sv_state = SvSTATE_;
2023 coroapi.execute_slf = api_execute_slf; 3032 coroapi.execute_slf = api_execute_slf;
3033 coroapi.prepare_nop = prepare_nop;
3034 coroapi.prepare_schedule = prepare_schedule;
3035 coroapi.prepare_cede = prepare_cede;
3036 coroapi.prepare_cede_notself = prepare_cede_notself;
2024 3037
2025 { 3038 {
2026 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3039 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027 3040
2028 if (!svp) croak ("Time::HiRes is required"); 3041 if (!svp) croak ("Time::HiRes is required");
2029 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3042 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2030 3043
2031 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3044 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3045
3046 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3047 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2032 } 3048 }
2033 3049
2034 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3050 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2035} 3051}
2036 3052
2037SV * 3053SV *
2038new (char *klass, ...) 3054new (SV *klass, ...)
3055 ALIAS:
3056 Coro::new = 1
2039 CODE: 3057 CODE:
2040{ 3058 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2041 struct coro *coro; 3059 OUTPUT:
2042 MAGIC *mg;
2043 HV *hv;
2044 int i;
2045
2046 Newz (0, coro, 1, struct coro);
2047 coro->args = newAV ();
2048 coro->flags = CF_NEW;
2049
2050 if (coro_first) coro_first->prev = coro;
2051 coro->next = coro_first;
2052 coro_first = coro;
2053
2054 coro->hv = hv = newHV ();
2055 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056 mg->mg_flags |= MGf_DUP;
2057 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2058
2059 av_extend (coro->args, items - 1);
2060 for (i = 1; i < items; i++)
2061 av_push (coro->args, newSVsv (ST (i)));
2062}
2063 OUTPUT:
2064 RETVAL 3060 RETVAL
2065 3061
2066void 3062void
2067_set_stacklevel (...) 3063transfer (...)
2068 ALIAS: 3064 PROTOTYPE: $$
2069 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 3065 CODE:
2070 Coro::State::transfer = CORO_SLF_TRANSFER 3066 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2071 Coro::schedule = CORO_SLF_SCHEDULE
2072 Coro::cede = CORO_SLF_CEDE
2073 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2074 CODE:
2075 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2076 3067
2077bool 3068bool
2078_destroy (SV *coro_sv) 3069_destroy (SV *coro_sv)
2079 CODE: 3070 CODE:
2080 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2085_exit (int code) 3076_exit (int code)
2086 PROTOTYPE: $ 3077 PROTOTYPE: $
2087 CODE: 3078 CODE:
2088 _exit (code); 3079 _exit (code);
2089 3080
3081SV *
3082clone (Coro::State coro)
3083 CODE:
3084{
3085#if CORO_CLONE
3086 struct coro *ncoro = coro_clone (aTHX_ coro);
3087 MAGIC *mg;
3088 /* TODO: too much duplication */
3089 ncoro->hv = newHV ();
3090 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3091 mg->mg_flags |= MGf_DUP;
3092 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3093#else
3094 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3095#endif
3096}
3097 OUTPUT:
3098 RETVAL
3099
2090int 3100int
2091cctx_stacksize (int new_stacksize = 0) 3101cctx_stacksize (int new_stacksize = 0)
3102 PROTOTYPE: ;$
2092 CODE: 3103 CODE:
2093 RETVAL = cctx_stacksize; 3104 RETVAL = cctx_stacksize;
2094 if (new_stacksize) 3105 if (new_stacksize)
2095 { 3106 {
2096 cctx_stacksize = new_stacksize; 3107 cctx_stacksize = new_stacksize;
… …
2099 OUTPUT: 3110 OUTPUT:
2100 RETVAL 3111 RETVAL
2101 3112
2102int 3113int
2103cctx_max_idle (int max_idle = 0) 3114cctx_max_idle (int max_idle = 0)
3115 PROTOTYPE: ;$
2104 CODE: 3116 CODE:
2105 RETVAL = cctx_max_idle; 3117 RETVAL = cctx_max_idle;
2106 if (max_idle > 1) 3118 if (max_idle > 1)
2107 cctx_max_idle = max_idle; 3119 cctx_max_idle = max_idle;
2108 OUTPUT: 3120 OUTPUT:
2109 RETVAL 3121 RETVAL
2110 3122
2111int 3123int
2112cctx_count () 3124cctx_count ()
3125 PROTOTYPE:
2113 CODE: 3126 CODE:
2114 RETVAL = cctx_count; 3127 RETVAL = cctx_count;
2115 OUTPUT: 3128 OUTPUT:
2116 RETVAL 3129 RETVAL
2117 3130
2118int 3131int
2119cctx_idle () 3132cctx_idle ()
3133 PROTOTYPE:
2120 CODE: 3134 CODE:
2121 RETVAL = cctx_idle; 3135 RETVAL = cctx_idle;
2122 OUTPUT: 3136 OUTPUT:
2123 RETVAL 3137 RETVAL
2124 3138
2125void 3139void
2126list () 3140list ()
3141 PROTOTYPE:
2127 PPCODE: 3142 PPCODE:
2128{ 3143{
2129 struct coro *coro; 3144 struct coro *coro;
2130 for (coro = coro_first; coro; coro = coro->next) 3145 for (coro = coro_first; coro; coro = coro->next)
2131 if (coro->hv) 3146 if (coro->hv)
… …
2138 eval = 1 3153 eval = 1
2139 CODE: 3154 CODE:
2140{ 3155{
2141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3156 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2142 { 3157 {
2143 struct coro temp; 3158 struct coro *current = SvSTATE_current;
2144 3159
2145 if (!(coro->flags & CF_RUNNING)) 3160 if (current != coro)
2146 { 3161 {
2147 PUTBACK; 3162 PUTBACK;
2148 save_perl (aTHX_ &temp); 3163 save_perl (aTHX_ current);
2149 load_perl (aTHX_ coro); 3164 load_perl (aTHX_ coro);
3165 SPAGAIN;
2150 } 3166 }
2151 3167
2152 {
2153 dSP;
2154 ENTER;
2155 SAVETMPS;
2156 PUTBACK;
2157 PUSHSTACK; 3168 PUSHSTACK;
3169
2158 PUSHMARK (SP); 3170 PUSHMARK (SP);
3171 PUTBACK;
2159 3172
2160 if (ix) 3173 if (ix)
2161 eval_sv (coderef, 0); 3174 eval_sv (coderef, 0);
2162 else 3175 else
2163 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3176 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2164 3177
2165 POPSTACK; 3178 POPSTACK;
2166 SPAGAIN; 3179 SPAGAIN;
2167 FREETMPS;
2168 LEAVE;
2169 PUTBACK;
2170 }
2171 3180
2172 if (!(coro->flags & CF_RUNNING)) 3181 if (current != coro)
2173 { 3182 {
3183 PUTBACK;
2174 save_perl (aTHX_ coro); 3184 save_perl (aTHX_ coro);
2175 load_perl (aTHX_ &temp); 3185 load_perl (aTHX_ current);
2176 SPAGAIN; 3186 SPAGAIN;
2177 } 3187 }
2178 } 3188 }
2179} 3189}
2180 3190
… …
2184 ALIAS: 3194 ALIAS:
2185 is_ready = CF_READY 3195 is_ready = CF_READY
2186 is_running = CF_RUNNING 3196 is_running = CF_RUNNING
2187 is_new = CF_NEW 3197 is_new = CF_NEW
2188 is_destroyed = CF_DESTROYED 3198 is_destroyed = CF_DESTROYED
3199 is_suspended = CF_SUSPENDED
2189 CODE: 3200 CODE:
2190 RETVAL = boolSV (coro->flags & ix); 3201 RETVAL = boolSV (coro->flags & ix);
2191 OUTPUT: 3202 OUTPUT:
2192 RETVAL 3203 RETVAL
2193 3204
2194void 3205void
2195throw (Coro::State self, SV *throw = &PL_sv_undef) 3206throw (Coro::State self, SV *throw = &PL_sv_undef)
2196 PROTOTYPE: $;$ 3207 PROTOTYPE: $;$
2197 CODE: 3208 CODE:
3209{
3210 struct coro *current = SvSTATE_current;
3211 SV **throwp = self == current ? &CORO_THROW : &self->except;
2198 SvREFCNT_dec (self->throw); 3212 SvREFCNT_dec (*throwp);
3213 SvGETMAGIC (throw);
2199 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3214 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3215}
2200 3216
2201void 3217void
2202api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3218api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3219 PROTOTYPE: $;$
2203 C_ARGS: aTHX_ coro, flags 3220 C_ARGS: aTHX_ coro, flags
2204 3221
2205SV * 3222SV *
2206has_cctx (Coro::State coro) 3223has_cctx (Coro::State coro)
2207 PROTOTYPE: $ 3224 PROTOTYPE: $
2208 CODE: 3225 CODE:
2209 RETVAL = boolSV (!!coro->cctx); 3226 /* maybe manage the running flag differently */
3227 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2210 OUTPUT: 3228 OUTPUT:
2211 RETVAL 3229 RETVAL
2212 3230
2213int 3231int
2214is_traced (Coro::State coro) 3232is_traced (Coro::State coro)
… …
2232 OUTPUT: 3250 OUTPUT:
2233 RETVAL 3251 RETVAL
2234 3252
2235void 3253void
2236force_cctx () 3254force_cctx ()
3255 PROTOTYPE:
2237 CODE: 3256 CODE:
2238 struct coro *coro = SvSTATE (coro_current);
2239 coro->cctx->idle_sp = 0; 3257 cctx_current->idle_sp = 0;
2240 3258
2241void 3259void
2242swap_defsv (Coro::State self) 3260swap_defsv (Coro::State self)
2243 PROTOTYPE: $ 3261 PROTOTYPE: $
2244 ALIAS: 3262 ALIAS:
2245 swap_defav = 1 3263 swap_defav = 1
2246 CODE: 3264 CODE:
2247 if (!self->slot) 3265 if (!self->slot)
2248 croak ("cannot swap state with coroutine that has no saved state"); 3266 croak ("cannot swap state with coroutine that has no saved state,");
2249 else 3267 else
2250 { 3268 {
2251 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3269 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3270 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253 3271
2254 SV *tmp = *src; *src = *dst; *dst = tmp; 3272 SV *tmp = *src; *src = *dst; *dst = tmp;
2255 } 3273 }
2256 3274
3275void
3276cancel (Coro::State self)
3277 CODE:
3278 coro_state_destroy (aTHX_ self);
3279 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3280
3281
3282SV *
3283enable_times (int enabled = enable_times)
3284 CODE:
3285{
3286 RETVAL = boolSV (enable_times);
3287
3288 if (enabled != enable_times)
3289 {
3290 enable_times = enabled;
3291
3292 coro_times_update ();
3293 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3294 }
3295}
3296 OUTPUT:
3297 RETVAL
3298
3299void
3300times (Coro::State self)
3301 PPCODE:
3302{
3303 struct coro *current = SvSTATE (coro_current);
3304
3305 if (expect_false (current == self))
3306 {
3307 coro_times_update ();
3308 coro_times_add (SvSTATE (coro_current));
3309 }
3310
3311 EXTEND (SP, 2);
3312 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3313 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3314
3315 if (expect_false (current == self))
3316 coro_times_sub (SvSTATE (coro_current));
3317}
3318
2257MODULE = Coro::State PACKAGE = Coro 3319MODULE = Coro::State PACKAGE = Coro
2258 3320
2259BOOT: 3321BOOT:
2260{ 3322{
2261 int i;
2262
2263 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3323 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3324 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266 3325 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3326 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2267 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3327 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2268 SvREADONLY_on (coro_current); 3328 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3329 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3330 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3331 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3332
3333 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3334 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3335 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2269 3336
2270 coro_stash = gv_stashpv ("Coro", TRUE); 3337 coro_stash = gv_stashpv ("Coro", TRUE);
2271 3338
2272 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3339 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2273 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3340 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2274 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3341 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2275 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3342 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2276 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3343 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2277 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3344 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2278
2279 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2280 coro_ready[i] = newAV ();
2281 3345
2282 { 3346 {
2283 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3347 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2284 3348
2285 coroapi.schedule = api_schedule; 3349 coroapi.schedule = api_schedule;
3350 coroapi.schedule_to = api_schedule_to;
2286 coroapi.cede = api_cede; 3351 coroapi.cede = api_cede;
2287 coroapi.cede_notself = api_cede_notself; 3352 coroapi.cede_notself = api_cede_notself;
2288 coroapi.ready = api_ready; 3353 coroapi.ready = api_ready;
2289 coroapi.is_ready = api_is_ready; 3354 coroapi.is_ready = api_is_ready;
2290 coroapi.nready = coro_nready; 3355 coroapi.nready = coro_nready;
2291 coroapi.current = coro_current; 3356 coroapi.current = coro_current;
2292 3357
2293 GCoroAPI = &coroapi; 3358 /*GCoroAPI = &coroapi;*/
2294 sv_setiv (sv, (IV)&coroapi); 3359 sv_setiv (sv, (IV)&coroapi);
2295 SvREADONLY_on (sv); 3360 SvREADONLY_on (sv);
2296 } 3361 }
2297} 3362}
3363
3364SV *
3365async (...)
3366 PROTOTYPE: &@
3367 CODE:
3368 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3369 api_ready (RETVAL);
3370 OUTPUT:
3371 RETVAL
3372
3373void
3374terminate (...)
3375 CODE:
3376 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3377
3378void
3379schedule (...)
3380 CODE:
3381 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3382
3383void
3384schedule_to (...)
3385 CODE:
3386 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3387
3388void
3389cede_to (...)
3390 CODE:
3391 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3392
3393void
3394cede (...)
3395 CODE:
3396 CORO_EXECUTE_SLF_XS (slf_init_cede);
3397
3398void
3399cede_notself (...)
3400 CODE:
3401 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2298 3402
2299void 3403void
2300_set_current (SV *current) 3404_set_current (SV *current)
2301 PROTOTYPE: $ 3405 PROTOTYPE: $
2302 CODE: 3406 CODE:
… …
2305 3409
2306void 3410void
2307_set_readyhook (SV *hook) 3411_set_readyhook (SV *hook)
2308 PROTOTYPE: $ 3412 PROTOTYPE: $
2309 CODE: 3413 CODE:
2310 LOCK;
2311 SvREFCNT_dec (coro_readyhook); 3414 SvREFCNT_dec (coro_readyhook);
3415 SvGETMAGIC (hook);
3416 if (SvOK (hook))
3417 {
2312 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3418 coro_readyhook = newSVsv (hook);
2313 UNLOCK; 3419 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3420 }
3421 else
3422 {
3423 coro_readyhook = 0;
3424 CORO_READYHOOK = 0;
3425 }
2314 3426
2315int 3427int
2316prio (Coro::State coro, int newprio = 0) 3428prio (Coro::State coro, int newprio = 0)
3429 PROTOTYPE: $;$
2317 ALIAS: 3430 ALIAS:
2318 nice = 1 3431 nice = 1
2319 CODE: 3432 CODE:
2320{ 3433{
2321 RETVAL = coro->prio; 3434 RETVAL = coro->prio;
… …
2323 if (items > 1) 3436 if (items > 1)
2324 { 3437 {
2325 if (ix) 3438 if (ix)
2326 newprio = coro->prio - newprio; 3439 newprio = coro->prio - newprio;
2327 3440
2328 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3441 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2329 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3442 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2330 3443
2331 coro->prio = newprio; 3444 coro->prio = newprio;
2332 } 3445 }
2333} 3446}
2334 OUTPUT: 3447 OUTPUT:
… …
2348 CODE: 3461 CODE:
2349 RETVAL = coro_nready; 3462 RETVAL = coro_nready;
2350 OUTPUT: 3463 OUTPUT:
2351 RETVAL 3464 RETVAL
2352 3465
2353# for async_pool speedup
2354void 3466void
2355_pool_1 (SV *cb) 3467suspend (Coro::State self)
3468 PROTOTYPE: $
2356 CODE: 3469 CODE:
2357{ 3470 self->flags |= CF_SUSPENDED;
2358 struct coro *coro = SvSTATE (coro_current);
2359 HV *hv = (HV *)SvRV (coro_current);
2360 AV *defav = GvAV (PL_defgv);
2361 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362 AV *invoke_av;
2363 int i, len;
2364 3471
2365 if (!invoke) 3472void
3473resume (Coro::State self)
3474 PROTOTYPE: $
3475 CODE:
3476 self->flags &= ~CF_SUSPENDED;
3477
3478void
3479_pool_handler (...)
3480 CODE:
3481 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3482
3483void
3484async_pool (SV *cv, ...)
3485 PROTOTYPE: &@
3486 PPCODE:
3487{
3488 HV *hv = (HV *)av_pop (av_async_pool);
3489 AV *av = newAV ();
3490 SV *cb = ST (0);
3491 int i;
3492
3493 av_extend (av, items - 2);
3494 for (i = 1; i < items; ++i)
3495 av_push (av, SvREFCNT_inc_NN (ST (i)));
3496
3497 if ((SV *)hv == &PL_sv_undef)
2366 { 3498 {
2367 SV *old = PL_diehook; 3499 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2368 PL_diehook = 0; 3500 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2369 SvREFCNT_dec (old); 3501 SvREFCNT_dec (sv);
2370 croak ("\3async_pool terminate\2\n");
2371 } 3502 }
2372 3503
2373 SvREFCNT_dec (coro->saved_deffh);
2374 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 invoke_av = (AV *)SvRV (invoke);
2380 len = av_len (invoke_av);
2381
2382 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384 if (len > 0)
2385 { 3504 {
2386 av_fill (defav, len - 1); 3505 struct coro *coro = SvSTATE_hv (hv);
2387 for (i = 0; i < len; ++i) 3506
2388 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3507 assert (!coro->invoke_cb);
3508 assert (!coro->invoke_av);
3509 coro->invoke_cb = SvREFCNT_inc (cb);
3510 coro->invoke_av = av;
2389 } 3511 }
2390 3512
3513 api_ready (aTHX_ (SV *)hv);
3514
3515 if (GIMME_V != G_VOID)
3516 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3517 else
2391 SvREFCNT_dec (invoke); 3518 SvREFCNT_dec (hv);
2392} 3519}
2393 3520
2394void 3521SV *
2395_pool_2 (SV *cb) 3522rouse_cb ()
3523 PROTOTYPE:
2396 CODE: 3524 CODE:
2397{ 3525 RETVAL = coro_new_rouse_cb (aTHX);
2398 struct coro *coro = SvSTATE (coro_current);
2399
2400 sv_setsv (cb, &PL_sv_undef);
2401
2402 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403 coro->saved_deffh = 0;
2404
2405 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407 {
2408 SV *old = PL_diehook;
2409 PL_diehook = 0;
2410 SvREFCNT_dec (old);
2411 croak ("\3async_pool terminate\2\n");
2412 }
2413
2414 av_clear (GvAV (PL_defgv));
2415 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 av_push (av_async_pool, newSVsv (coro_current));
2424}
2425
2426#if 0
2427
2428void
2429_generator_call (...)
2430 PROTOTYPE: @
2431 PPCODE:
2432 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433 xxxx
2434 abort ();
2435
2436SV *
2437gensub (SV *sub, ...)
2438 PROTOTYPE: &;@
2439 CODE:
2440{
2441 struct coro *coro;
2442 MAGIC *mg;
2443 CV *xcv;
2444 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445 int i;
2446
2447 CvGV (ncv) = CvGV (cv);
2448 CvFILE (ncv) = CvFILE (cv);
2449
2450 Newz (0, coro, 1, struct coro);
2451 coro->args = newAV ();
2452 coro->flags = CF_NEW;
2453
2454 av_extend (coro->args, items - 1);
2455 for (i = 1; i < items; i++)
2456 av_push (coro->args, newSVsv (ST (i)));
2457
2458 CvISXSUB_on (ncv);
2459 CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463 CvXSUB (ncv) = CvXSUB (xcv);
2464 CvANON_on (ncv);
2465
2466 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467 RETVAL = newRV_noinc ((SV *)ncv);
2468}
2469 OUTPUT: 3526 OUTPUT:
2470 RETVAL 3527 RETVAL
2471 3528
2472#endif
2473
2474
2475MODULE = Coro::State PACKAGE = Coro::AIO
2476
2477void 3529void
2478_get_state (SV *self) 3530rouse_wait (...)
3531 PROTOTYPE: ;$
2479 PPCODE: 3532 PPCODE:
2480{ 3533 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2481 AV *defav = GvAV (PL_defgv);
2482 AV *av = newAV ();
2483 int i;
2484 SV *data_sv = newSV (sizeof (struct io_state));
2485 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2486 SvCUR_set (data_sv, sizeof (struct io_state));
2487 SvPOK_only (data_sv);
2488
2489 data->errorno = errno;
2490 data->laststype = PL_laststype;
2491 data->laststatval = PL_laststatval;
2492 data->statcache = PL_statcache;
2493
2494 av_extend (av, AvFILLp (defav) + 1 + 1);
2495
2496 for (i = 0; i <= AvFILLp (defav); ++i)
2497 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2498
2499 av_push (av, data_sv);
2500
2501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2502
2503 api_ready (aTHX_ self);
2504}
2505 3534
2506void 3535void
2507_set_state (SV *state) 3536on_enter (SV *block)
3537 ALIAS:
3538 on_leave = 1
2508 PROTOTYPE: $ 3539 PROTOTYPE: &
3540 CODE:
3541{
3542 struct coro *coro = SvSTATE_current;
3543 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3544
3545 block = s_get_cv_croak (block);
3546
3547 if (!*avp)
3548 *avp = newAV ();
3549
3550 av_push (*avp, SvREFCNT_inc (block));
3551
3552 if (!ix)
3553 on_enterleave_call (aTHX_ block);
3554
3555 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3556 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3557 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3558}
3559
3560
3561MODULE = Coro::State PACKAGE = PerlIO::cede
3562
3563BOOT:
3564 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3565
3566
3567MODULE = Coro::State PACKAGE = Coro::Semaphore
3568
3569SV *
3570new (SV *klass, SV *count = 0)
3571 CODE:
3572{
3573 int semcnt = 1;
3574
3575 if (count)
3576 {
3577 SvGETMAGIC (count);
3578
3579 if (SvOK (count))
3580 semcnt = SvIV (count);
3581 }
3582
3583 RETVAL = sv_bless (
3584 coro_waitarray_new (aTHX_ semcnt),
3585 GvSTASH (CvGV (cv))
3586 );
3587}
3588 OUTPUT:
3589 RETVAL
3590
3591# helper for Coro::Channel and others
3592SV *
3593_alloc (int count)
3594 CODE:
3595 RETVAL = coro_waitarray_new (aTHX_ count);
3596 OUTPUT:
3597 RETVAL
3598
3599SV *
3600count (SV *self)
3601 CODE:
3602 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3603 OUTPUT:
3604 RETVAL
3605
3606void
3607up (SV *self, int adjust = 1)
3608 ALIAS:
3609 adjust = 1
3610 CODE:
3611 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3612
3613void
3614down (...)
3615 CODE:
3616 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3617
3618void
3619wait (...)
3620 CODE:
3621 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3622
3623void
3624try (SV *self)
3625 PPCODE:
3626{
3627 AV *av = (AV *)SvRV (self);
3628 SV *count_sv = AvARRAY (av)[0];
3629 IV count = SvIVX (count_sv);
3630
3631 if (count > 0)
3632 {
3633 --count;
3634 SvIVX (count_sv) = count;
3635 XSRETURN_YES;
3636 }
3637 else
3638 XSRETURN_NO;
3639}
3640
3641void
3642waiters (SV *self)
3643 PPCODE:
3644{
3645 AV *av = (AV *)SvRV (self);
3646 int wcount = AvFILLp (av) + 1 - 1;
3647
3648 if (GIMME_V == G_SCALAR)
3649 XPUSHs (sv_2mortal (newSViv (wcount)));
3650 else
3651 {
3652 int i;
3653 EXTEND (SP, wcount);
3654 for (i = 1; i <= wcount; ++i)
3655 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3656 }
3657}
3658
3659MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3660
3661void
3662_may_delete (SV *sem, int count, int extra_refs)
2509 PPCODE: 3663 PPCODE:
2510{ 3664{
2511 AV *av = (AV *)SvRV (state); 3665 AV *av = (AV *)SvRV (sem);
2512 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2513 int i;
2514 3666
2515 errno = data->errorno; 3667 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2516 PL_laststype = data->laststype; 3668 && AvFILLp (av) == 0 /* no waiters, just count */
2517 PL_laststatval = data->laststatval; 3669 && SvIV (AvARRAY (av)[0]) == count)
2518 PL_statcache = data->statcache; 3670 XSRETURN_YES;
2519 3671
3672 XSRETURN_NO;
3673}
3674
3675MODULE = Coro::State PACKAGE = Coro::Signal
3676
3677SV *
3678new (SV *klass)
3679 CODE:
3680 RETVAL = sv_bless (
3681 coro_waitarray_new (aTHX_ 0),
3682 GvSTASH (CvGV (cv))
3683 );
3684 OUTPUT:
3685 RETVAL
3686
3687void
3688wait (...)
3689 CODE:
3690 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3691
3692void
3693broadcast (SV *self)
3694 CODE:
3695{
3696 AV *av = (AV *)SvRV (self);
3697 coro_signal_wake (aTHX_ av, AvFILLp (av));
3698}
3699
3700void
3701send (SV *self)
3702 CODE:
3703{
3704 AV *av = (AV *)SvRV (self);
3705
2520 EXTEND (SP, AvFILLp (av)); 3706 if (AvFILLp (av))
2521 for (i = 0; i < AvFILLp (av); ++i) 3707 coro_signal_wake (aTHX_ av, 1);
2522 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3708 else
3709 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2523} 3710}
3711
3712IV
3713awaited (SV *self)
3714 CODE:
3715 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3716 OUTPUT:
3717 RETVAL
2524 3718
2525 3719
2526MODULE = Coro::State PACKAGE = Coro::AnyEvent 3720MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527 3721
2528BOOT: 3722BOOT:
2529 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3723 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530 3724
2531SV * 3725void
2532_schedule (...) 3726_schedule (...)
2533 PROTOTYPE: @
2534 CODE: 3727 CODE:
2535{ 3728{
2536 static int incede; 3729 static int incede;
2537 3730
2538 api_cede_notself (aTHX); 3731 api_cede_notself (aTHX);
… …
2544 sv_setsv (sv_activity, &PL_sv_undef); 3737 sv_setsv (sv_activity, &PL_sv_undef);
2545 if (coro_nready >= incede) 3738 if (coro_nready >= incede)
2546 { 3739 {
2547 PUSHMARK (SP); 3740 PUSHMARK (SP);
2548 PUTBACK; 3741 PUTBACK;
2549 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3742 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2550 SPAGAIN;
2551 } 3743 }
2552 3744
2553 --incede; 3745 --incede;
2554} 3746}
2555 3747
2556 3748
2557MODULE = Coro::State PACKAGE = PerlIO::cede 3749MODULE = Coro::State PACKAGE = Coro::AIO
2558 3750
2559BOOT: 3751void
2560 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3752_register (char *target, char *proto, SV *req)
3753 CODE:
3754{
3755 SV *req_cv = s_get_cv_croak (req);
3756 /* newXSproto doesn't return the CV on 5.8 */
3757 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3758 sv_setpv ((SV *)slf_cv, proto);
3759 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3760}
2561 3761
3762MODULE = Coro::State PACKAGE = Coro::Select
3763
3764void
3765patch_pp_sselect ()
3766 CODE:
3767 if (!coro_old_pp_sselect)
3768 {
3769 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3770 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3771 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3772 }
3773
3774void
3775unpatch_pp_sselect ()
3776 CODE:
3777 if (coro_old_pp_sselect)
3778 {
3779 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3780 coro_old_pp_sselect = 0;
3781 }
3782
3783

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