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Comparing Coro/Coro/State.xs (file contents):
Revision 1.303 by root, Wed Nov 19 05:52:42 2008 UTC vs.
Revision 1.406 by root, Sat Jun 11 13:49:00 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp /* deep magic */ 33# define setjmp _setjmp /* deep magic */
22#else 34#else
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
111#endif 70#endif
112 71
113#ifndef CORO_STACKGUARD 72#ifndef CORO_STACKGUARD
… …
127#else 86#else
128# define dSTACKLEVEL volatile void *stacklevel 87# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 88# define STACKLEVEL ((void *)&stacklevel)
130#endif 89#endif
131 90
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 91#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 92
149#include "CoroAPI.h" 93#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 94#define GCoroAPI (&coroapi) /* very sneaky */
151 95
152#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
153# if CORO_PTHREAD 97# if CORO_PTHREAD
154static void *coro_thx; 98static void *coro_thx;
155# endif 99# endif
156#endif 100#endif
157 101
102/* used in state.h */
103#define VAR(name,type) VARx(name, PL_ ## name, type)
104
105#ifdef __linux
106# include <time.h> /* for timespec */
107# include <syscall.h> /* for SYS_* */
108# ifdef SYS_clock_gettime
109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
114
158static 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]);
159 117
160/* we hijack an hopefully unused CV flag for our purposes */ 118/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 119#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
163 122
164static U32 cctx_gen; 123static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 127static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 129static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 130
131static AV *av_destroy; /* destruction queue */
132static SV *sv_manager; /* the manager coro */
133static SV *sv_idle; /* $Coro::idle */
134
172static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 137static SV *rv_diehook;
175static SV *rv_warnhook; 138static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
177 140
178/* async_pool helper stuff */ 141/* async_pool helper stuff */
179static SV *sv_pool_rss; 142static SV *sv_pool_rss;
180static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 145static AV *av_async_pool; /* idle pool */
146static SV *sv_Coro; /* class string */
147static CV *cv_pool_handler;
182 148
183/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
184static SV *sv_activity; 150static SV *sv_activity;
185 151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
157
186static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
188 160
189enum { 161enum
162{
190 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215 int valgrind_id; 188 int valgrind_id;
216#endif 189#endif
217 unsigned char flags; 190 unsigned char flags;
218} coro_cctx; 191} coro_cctx;
219 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
220enum { 199enum
200{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 210typedef struct
229{ 211{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
235# include "state.h" 213# include "state.h"
236#undef VAR 214#undef VARx
237} perl_slots; 215} perl_slots;
238 216
217// how many context stack entries do we need for perl_slots
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 219
241/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
242struct coro { 221struct coro
222{
243 /* the C coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 224 coro_cctx *cctx;
225
226 /* ready queue */
227 struct coro *next_ready;
245 228
246 /* state data */ 229 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 230 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 231 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
250 233
234 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 238
257 /* statistics */ 239 /* statistics */
258 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
259 241
260 /* coro process data */ 242 /* coro process data */
261 int prio; 243 int prio;
262 SV *except; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
263 SV *rouse_cb; 245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
264 248
265 /* async_pool */ 249 /* async_pool */
266 SV *saved_deffh; 250 SV *saved_deffh;
251 SV *invoke_cb;
252 AV *invoke_av;
253
254 /* on_enter/on_leave */
255 AV *on_enter;
256 AV *on_leave;
257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
267 263
268 /* linked list */ 264 /* linked list */
269 struct coro *next, *prev; 265 struct coro *next, *prev;
270}; 266};
271 267
272typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
274 270
275/* the following variables are effectively part of the perl context */ 271/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */ 272/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */ 273/* the main reason we don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */ 274static struct CoroSLF slf_frame; /* the current slf frame */
279 275
280/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
281 277
282#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
288 284
289/* for Coro.pm */ 285/* for Coro.pm */
290static SV *coro_current; 286static SV *coro_current;
291static SV *coro_readyhook; 287static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
289static CV *cv_coro_run;
293static struct coro *coro_first; 290static struct coro *coro_first;
294#define coro_nready coroapi.nready 291#define coro_nready coroapi.nready
295 292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 #ifndef CORO_JIT_TYPE
297 #if __x86_64 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
298 #define CORO_JIT_TYPE "amd64-unix"
299 typedef void (*load_save_perl_slots_type)(perl_slots *);
300 #else
301 #undef CORO_JIT
302 #endif
303 #endif
304#endif
305
306#if CORO_JIT
307static load_save_perl_slots_type load_perl_slots, save_perl_slots;
308#endif
309
310/** Coro::Select ************************************************************/
311
312static OP *(*coro_old_pp_sselect) (pTHX);
313static SV *coro_select_select;
314
315/* horrible hack, but if it works... */
316static OP *
317coro_pp_sselect (pTHX)
318{
319 dSP;
320 PUSHMARK (SP - 4); /* fake argument list */
321 XPUSHs (coro_select_select);
322 PUTBACK;
323
324 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
325 PL_op->op_flags |= OPf_STACKED;
326 PL_op->op_private = 0;
327 return PL_ppaddr [OP_ENTERSUB](aTHX);
328}
329
330/** time stuff **************************************************************/
331
332#ifdef HAS_GETTIMEOFDAY
333
334ECB_INLINE void
335coro_u2time (pTHX_ UV ret[2])
336{
337 struct timeval tv;
338 gettimeofday (&tv, 0);
339
340 ret [0] = tv.tv_sec;
341 ret [1] = tv.tv_usec;
342}
343
344ECB_INLINE double
345coro_nvtime ()
346{
347 struct timeval tv;
348 gettimeofday (&tv, 0);
349
350 return tv.tv_sec + tv.tv_usec * 1e-6;
351}
352
353ECB_INLINE void
354time_init (pTHX)
355{
356 nvtime = coro_nvtime;
357 u2time = coro_u2time;
358}
359
360#else
361
362ECB_INLINE void
363time_init (pTHX)
364{
365 SV **svp;
366
367 require_pv ("Time/HiRes.pm");
368
369 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
370
371 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
372 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
373
374 nvtime = INT2PTR (double (*)(), SvIV (*svp));
375
376 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
377 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
378}
379
380#endif
381
296/** lowlevel stuff **********************************************************/ 382/** lowlevel stuff **********************************************************/
297 383
298static SV * 384static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 385coro_get_sv (pTHX_ const char *name, int create)
300{ 386{
301#if PERL_VERSION_ATLEAST (5,10,0) 387#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 388 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_sv (name, create); 389 get_sv (name, create);
304#endif 390#endif
305 return get_sv (name, create); 391 return get_sv (name, create);
306} 392}
307 393
308static AV * 394static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 395coro_get_av (pTHX_ const char *name, int create)
310{ 396{
311#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 398 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create); 399 get_av (name, create);
314#endif 400#endif
315 return get_av (name, create); 401 return get_av (name, create);
316} 402}
317 403
318static HV * 404static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 405coro_get_hv (pTHX_ const char *name, int create)
320{ 406{
321#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 408 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create); 409 get_hv (name, create);
324#endif 410#endif
325 return get_hv (name, create); 411 return get_hv (name, create);
326} 412}
327 413
328static AV * 414ECB_INLINE void
415coro_times_update ()
416{
417#ifdef coro_clock_gettime
418 struct timespec ts;
419
420 ts.tv_sec = ts.tv_nsec = 0;
421 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
422 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
423
424 ts.tv_sec = ts.tv_nsec = 0;
425 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
426 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
427#else
428 dTHX;
429 UV tv[2];
430
431 u2time (aTHX_ tv);
432 time_real [0] = tv [0];
433 time_real [1] = tv [1] * 1000;
434#endif
435}
436
437ECB_INLINE void
438coro_times_add (struct coro *c)
439{
440 c->t_real [1] += time_real [1];
441 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
442 c->t_real [0] += time_real [0];
443
444 c->t_cpu [1] += time_cpu [1];
445 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
446 c->t_cpu [0] += time_cpu [0];
447}
448
449ECB_INLINE void
450coro_times_sub (struct coro *c)
451{
452 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
453 c->t_real [1] -= time_real [1];
454 c->t_real [0] -= time_real [0];
455
456 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
457 c->t_cpu [1] -= time_cpu [1];
458 c->t_cpu [0] -= time_cpu [0];
459}
460
461/*****************************************************************************/
462/* magic glue */
463
464#define CORO_MAGIC_type_cv 26
465#define CORO_MAGIC_type_state PERL_MAGIC_ext
466
467#define CORO_MAGIC_NN(sv, type) \
468 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
469 ? SvMAGIC (sv) \
470 : mg_find (sv, type))
471
472#define CORO_MAGIC(sv, type) \
473 (ecb_expect_true (SvMAGIC (sv)) \
474 ? CORO_MAGIC_NN (sv, type) \
475 : 0)
476
477#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
478#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
479
480ECB_INLINE MAGIC *
481SvSTATEhv_p (pTHX_ SV *coro)
482{
483 MAGIC *mg;
484
485 if (ecb_expect_true (
486 SvTYPE (coro) == SVt_PVHV
487 && (mg = CORO_MAGIC_state (coro))
488 && mg->mg_virtual == &coro_state_vtbl
489 ))
490 return mg;
491
492 return 0;
493}
494
495ECB_INLINE struct coro *
496SvSTATE_ (pTHX_ SV *coro)
497{
498 MAGIC *mg;
499
500 if (SvROK (coro))
501 coro = SvRV (coro);
502
503 mg = SvSTATEhv_p (aTHX_ coro);
504 if (!mg)
505 croak ("Coro::State object required");
506
507 return (struct coro *)mg->mg_ptr;
508}
509
510#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
511
512/* faster than SvSTATE, but expects a coroutine hv */
513#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
514#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
515
516/*****************************************************************************/
517/* padlist management and caching */
518
519ECB_INLINE AV *
329coro_clone_padlist (pTHX_ CV *cv) 520coro_derive_padlist (pTHX_ CV *cv)
330{ 521{
331 AV *padlist = CvPADLIST (cv); 522 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 523 AV *newpadlist, *newpad;
333 524
334 newpadlist = newAV (); 525 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 530 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 531#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 532 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 533 --AvFILLp (padlist);
343 534
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 535 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 536 av_store (newpadlist, 1, (SV *)newpad);
346 537
347 return newpadlist; 538 return newpadlist;
348} 539}
349 540
350static void 541ECB_INLINE void
351free_padlist (pTHX_ AV *padlist) 542free_padlist (pTHX_ AV *padlist)
352{ 543{
353 /* may be during global destruction */ 544 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 545 if (!IN_DESTRUCT)
355 { 546 {
356 I32 i = AvFILLp (padlist); 547 I32 i = AvFILLp (padlist);
357 while (i >= 0) 548
549 while (i > 0) /* special-case index 0 */
358 { 550 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 551 /* we try to be extra-careful here */
360 if (svp) 552 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 553 I32 j = AvFILLp (av);
362 SV *sv; 554
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 555 while (j >= 0)
556 SvREFCNT_dec (AvARRAY (av)[j--]);
557
558 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 559 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 560 }
369 561
562 SvREFCNT_dec (AvARRAY (padlist)[0]);
563
564 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 565 SvREFCNT_dec ((SV*)padlist);
371 } 566 }
372} 567}
373 568
374static int 569static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 570coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 571{
377 AV *padlist; 572 AV *padlist;
378 AV *av = (AV *)mg->mg_obj; 573 AV *av = (AV *)mg->mg_obj;
574
575 /* perl manages to free our internal AV and _then_ call us */
576 if (IN_DESTRUCT)
577 return 0;
379 578
380 /* casting is fun. */ 579 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 580 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 581 free_padlist (aTHX_ padlist);
383 582
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 583 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 584
386 return 0; 585 return 0;
387} 586}
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 587
392static MGVTBL coro_cv_vtbl = { 588static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 589 0, 0, 0, 0,
394 coro_cv_free 590 coro_cv_free
395}; 591};
396 592
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
405 : 0)
406
407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
411SvSTATE_ (pTHX_ SV *coro)
412{
413 HV *stash;
414 MAGIC *mg;
415
416 if (SvROK (coro))
417 coro = SvRV (coro);
418
419 if (expect_false (SvTYPE (coro) != SVt_PVHV))
420 croak ("Coro::State object required");
421
422 stash = SvSTASH (coro);
423 if (expect_false (stash != coro_stash && stash != coro_state_stash))
424 {
425 /* very slow, but rare, check */
426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
427 croak ("Coro::State object required");
428 }
429
430 mg = CORO_MAGIC_state (coro);
431 return (struct coro *)mg->mg_ptr;
432}
433
434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439
440/* the next two functions merely cache the padlists */ 593/* the next two functions merely cache the padlists */
441static void 594ECB_INLINE void
442get_padlist (pTHX_ CV *cv) 595get_padlist (pTHX_ CV *cv)
443{ 596{
444 MAGIC *mg = CORO_MAGIC_cv (cv); 597 MAGIC *mg = CORO_MAGIC_cv (cv);
445 AV *av; 598 AV *av;
446 599
447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 600 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 601 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
449 else 602 else
450 { 603 {
451#if CORO_PREFER_PERL_FUNCTIONS 604#if CORO_PREFER_PERL_FUNCTIONS
452 /* this is probably cleaner? but also slower! */ 605 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */ 606 /* in practise, it seems to be less stable */
454 CV *cp = Perl_cv_clone (cv); 607 CV *cp = Perl_cv_clone (aTHX_ cv);
455 CvPADLIST (cv) = CvPADLIST (cp); 608 CvPADLIST (cv) = CvPADLIST (cp);
456 CvPADLIST (cp) = 0; 609 CvPADLIST (cp) = 0;
457 SvREFCNT_dec (cp); 610 SvREFCNT_dec (cp);
458#else 611#else
459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 612 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
460#endif 613#endif
461 } 614 }
462} 615}
463 616
464static void 617ECB_INLINE void
465put_padlist (pTHX_ CV *cv) 618put_padlist (pTHX_ CV *cv)
466{ 619{
467 MAGIC *mg = CORO_MAGIC_cv (cv); 620 MAGIC *mg = CORO_MAGIC_cv (cv);
468 AV *av; 621 AV *av;
469 622
470 if (expect_false (!mg)) 623 if (ecb_expect_false (!mg))
471 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 624 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
472 625
473 av = (AV *)mg->mg_obj; 626 av = (AV *)mg->mg_obj;
474 627
475 if (expect_false (AvFILLp (av) >= AvMAX (av))) 628 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
476 av_extend (av, AvMAX (av) + 1); 629 av_extend (av, AvFILLp (av) + 1);
477 630
478 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 631 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
479} 632}
480 633
481/** load & save, init *******************************************************/ 634/** load & save, init *******************************************************/
635
636/* swap sv heads, at least logically */
637static void
638swap_svs (pTHX_ Coro__State c)
639{
640 int i;
641
642 for (i = 0; i <= AvFILLp (c->swap_sv); )
643 {
644 SV *a = AvARRAY (c->swap_sv)[i++];
645 SV *b = AvARRAY (c->swap_sv)[i++];
646
647 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
648 SV tmp;
649
650 /* swap sv_any */
651 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
652
653 /* swap sv_flags */
654 SvFLAGS (&tmp) = SvFLAGS (a);
655 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
656 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
657
658#if PERL_VERSION_ATLEAST (5,10,0)
659 /* perl 5.10 complicates this _quite_ a bit, but it also is
660 * much faster, so no quarrels here. alternatively, we could
661 * sv_upgrade to avoid this.
662 */
663 {
664 /* swap sv_u */
665 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
666
667 /* if SvANY points to the head, we need to adjust the pointers,
668 * as the pointer for a still points to b, and maybe vice versa.
669 */
670 #define svany_in_head(type) \
671 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
672
673 if (svany_in_head (SvTYPE (a)))
674 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
675
676 if (svany_in_head (SvTYPE (b)))
677 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
678 }
679#endif
680 }
681}
682
683#define SWAP_SVS(coro) \
684 if (ecb_expect_false ((coro)->swap_sv)) \
685 swap_svs (aTHX_ (coro))
686
687static void
688on_enterleave_call (pTHX_ SV *cb);
482 689
483static void 690static void
484load_perl (pTHX_ Coro__State c) 691load_perl (pTHX_ Coro__State c)
485{ 692{
486 perl_slots *slot = c->slot; 693 perl_slots *slot = c->slot;
487 c->slot = 0; 694 c->slot = 0;
488 695
489 PL_mainstack = c->mainstack; 696 PL_mainstack = c->mainstack;
490 697
491 GvSV (PL_defgv) = slot->defsv; 698#if CORO_JIT
492 GvAV (PL_defgv) = slot->defav; 699 load_perl_slots (slot);
493 GvSV (PL_errgv) = slot->errsv; 700#else
494 GvSV (irsgv) = slot->irsgv;
495
496 #define VAR(name,type) PL_ ## name = slot->name; 701 #define VARx(name,expr,type) expr = slot->name;
497 # include "state.h" 702 # include "state.h"
498 #undef VAR 703 #undef VARx
704#endif
499 705
500 { 706 {
501 dSP; 707 dSP;
502 708
503 CV *cv; 709 CV *cv;
504 710
505 /* now do the ugly restore mess */ 711 /* now do the ugly restore mess */
506 while (expect_true (cv = (CV *)POPs)) 712 while (ecb_expect_true (cv = (CV *)POPs))
507 { 713 {
508 put_padlist (aTHX_ cv); /* mark this padlist as available */ 714 put_padlist (aTHX_ cv); /* mark this padlist as available */
509 CvDEPTH (cv) = PTR2IV (POPs); 715 CvDEPTH (cv) = PTR2IV (POPs);
510 CvPADLIST (cv) = (AV *)POPs; 716 CvPADLIST (cv) = (AV *)POPs;
511 } 717 }
… …
513 PUTBACK; 719 PUTBACK;
514 } 720 }
515 721
516 slf_frame = c->slf_frame; 722 slf_frame = c->slf_frame;
517 CORO_THROW = c->except; 723 CORO_THROW = c->except;
724
725 if (ecb_expect_false (enable_times))
726 {
727 if (ecb_expect_false (!times_valid))
728 coro_times_update ();
729
730 coro_times_sub (c);
731 }
732
733 if (ecb_expect_false (c->on_enter))
734 {
735 int i;
736
737 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
738 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
739 }
740
741 SWAP_SVS (c);
518} 742}
519 743
520static void 744static void
521save_perl (pTHX_ Coro__State c) 745save_perl (pTHX_ Coro__State c)
522{ 746{
747 SWAP_SVS (c);
748
749 if (ecb_expect_false (c->on_leave))
750 {
751 int i;
752
753 for (i = AvFILLp (c->on_leave); i >= 0; --i)
754 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
755 }
756
757 times_valid = 0;
758
759 if (ecb_expect_false (enable_times))
760 {
761 coro_times_update (); times_valid = 1;
762 coro_times_add (c);
763 }
764
523 c->except = CORO_THROW; 765 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 766 c->slf_frame = slf_frame;
525 767
526 { 768 {
527 dSP; 769 dSP;
… …
536 778
537 XPUSHs (Nullsv); 779 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 780 /* this loop was inspired by pp_caller */
539 for (;;) 781 for (;;)
540 { 782 {
541 while (expect_true (cxix >= 0)) 783 while (ecb_expect_true (cxix >= 0))
542 { 784 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 785 PERL_CONTEXT *cx = &ccstk[cxix--];
544 786
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 787 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 788 {
547 CV *cv = cx->blk_sub.cv; 789 CV *cv = cx->blk_sub.cv;
548 790
549 if (expect_true (CvDEPTH (cv))) 791 if (ecb_expect_true (CvDEPTH (cv)))
550 { 792 {
551 EXTEND (SP, 3); 793 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 794 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 795 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 796 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 799 get_padlist (aTHX_ cv);
558 } 800 }
559 } 801 }
560 } 802 }
561 803
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 804 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 805 break;
564 806
565 top_si = top_si->si_prev; 807 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 808 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 809 cxix = top_si->si_cxix;
… …
569 811
570 PUTBACK; 812 PUTBACK;
571 } 813 }
572 814
573 /* allocate some space on the context stack for our purposes */ 815 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 816 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 817 {
579 int i; 818 unsigned int i;
819
580 for (i = 3; i < SLOT_COUNT; ++i) 820 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 821 CXINC;
582 } 822
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 823 cxstack_ix -= SLOT_COUNT; /* undo allocation */
824 }
584 825
585 c->mainstack = PL_mainstack; 826 c->mainstack = PL_mainstack;
586 827
587 { 828 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 829 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 830
590 slot->defav = GvAV (PL_defgv); 831#if CORO_JIT
591 slot->defsv = DEFSV; 832 save_perl_slots (slot);
592 slot->errsv = ERRSV; 833#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 834 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 835 # include "state.h"
597 #undef VAR 836 #undef VARx
837#endif
598 } 838 }
599} 839}
600 840
601/* 841/*
602 * allocate various perl stacks. This is almost an exact copy 842 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 843 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 844 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 845 * not usually need a lot of stackspace.
606 */ 846 */
607#if CORO_PREFER_PERL_FUNCTIONS 847#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 848# define coro_init_stacks(thx) init_stacks ()
609#else 849#else
610static void 850static void
611coro_init_stacks (pTHX) 851coro_init_stacks (pTHX)
612{ 852{
613 PL_curstackinfo = new_stackinfo(32, 8); 853 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 854 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 855 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 856 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 857
618 PL_stack_base = AvARRAY(PL_curstack); 858 PL_stack_base = AvARRAY(PL_curstack);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 916#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 917 Safefree (PL_retstack);
678#endif 918#endif
679} 919}
680 920
921#define CORO_RSS \
922 rss += sizeof (SYM (curstackinfo)); \
923 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
924 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
925 rss += SYM (tmps_max) * sizeof (SV *); \
926 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
927 rss += SYM (scopestack_max) * sizeof (I32); \
928 rss += SYM (savestack_max) * sizeof (ANY);
929
681static size_t 930static size_t
682coro_rss (pTHX_ struct coro *coro) 931coro_rss (pTHX_ struct coro *coro)
683{ 932{
684 size_t rss = sizeof (*coro); 933 size_t rss = sizeof (*coro);
685 934
686 if (coro->mainstack) 935 if (coro->mainstack)
687 { 936 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 937 if (coro->flags & CF_RUNNING)
692 { 938 {
693 slot = &tmp_slot; 939 #define SYM(sym) PL_ ## sym
694 940 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 941 #undef SYM
698 } 942 }
699 else 943 else
700 slot = coro->slot;
701
702 if (slot)
703 { 944 {
704 rss += sizeof (slot->curstackinfo); 945 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 946 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 947 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 948 }
716 } 949 }
717 950
718 return rss; 951 return rss;
719} 952}
… …
732#endif 965#endif
733 966
734/* 967/*
735 * This overrides the default magic get method of %SIG elements. 968 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 969 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 970 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 971 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 972 */
743static int 973static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 974coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 975{
746 const char *s = MgPV_nolen_const (mg); 976 const char *s = MgPV_nolen_const (mg);
747 977
748 if (*s == '_') 978 if (*s == '_')
… …
760 } 990 }
761 991
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 992 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763} 993}
764 994
765static int 995static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 996coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 997{
768 const char *s = MgPV_nolen_const (mg); 998 const char *s = MgPV_nolen_const (mg);
769 999
770 if (*s == '_') 1000 if (*s == '_')
… …
784 } 1014 }
785 1015
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1016 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1017}
788 1018
789static int 1019static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1020coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1021{
792 const char *s = MgPV_nolen_const (mg); 1022 const char *s = MgPV_nolen_const (mg);
793 1023
794 if (*s == '_') 1024 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1029 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1030
801 if (svp) 1031 if (svp)
802 { 1032 {
803 SV *old = *svp; 1033 SV *old = *svp;
804 *svp = newSVsv (sv); 1034 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1035 SvREFCNT_dec (old);
806 return 0; 1036 return 0;
807 } 1037 }
808 } 1038 }
809 1039
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1051slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1052{
823 return 0; 1053 return 0;
824} 1054}
825 1055
826static UNOP coro_setup_op; 1056static int
1057slf_check_repeat (pTHX_ struct CoroSLF *frame)
1058{
1059 return 1;
1060}
827 1061
828static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1062static UNOP init_perl_op;
1063
1064ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1065init_perl (pTHX_ struct coro *coro)
830{ 1066{
831 /* 1067 /*
832 * emulate part of the perl startup here. 1068 * emulate part of the perl startup here.
833 */ 1069 */
834 coro_init_stacks (aTHX); 1070 coro_init_stacks (aTHX);
835 1071
836 PL_runops = RUNOPS_DEFAULT; 1072 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1073 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1074 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1075 PL_comppad = 0;
1076 PL_comppad_name = 0;
1077 PL_comppad_name_fill = 0;
1078 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1079 PL_curpm = 0;
841 PL_curpad = 0; 1080 PL_curpad = 0;
842 PL_localizing = 0; 1081 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1082 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1083#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1084 PL_parser = 0;
847#endif 1085#endif
1086 PL_hints = 0;
848 1087
849 /* recreate the die/warn hooks */ 1088 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1089 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1090 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1091
853 GvSV (PL_defgv) = newSV (0); 1092 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1093 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1094 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1095 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1096 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1097 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1098 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1099
860 { 1100 {
861 dSP; 1101 dSP;
862 UNOP myop; 1102 UNOP myop;
863 1103
864 Zero (&myop, 1, UNOP); 1104 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1105 myop.op_next = Nullop;
1106 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1107 myop.op_flags = OPf_WANT_VOID;
867 1108
868 PUSHMARK (SP); 1109 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1110 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1111 PUTBACK;
871 PL_op = (OP *)&myop; 1112 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1113 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1114 }
875 1115
876 /* this newly created coroutine might be run on an existing cctx which most 1116 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1117 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1118 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1119 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1120 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1121 slf_frame.destroy = 0;
881 1122
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1123 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op; 1124 init_perl_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM; 1125 init_perl_op.op_type = OP_ENTERSUB;
885 coro_setup_op.op_ppaddr = pp_slf; 1126 init_perl_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */ 1127 /* no flags etc. required, as an init function won't be called */
887 1128
888 PL_op = (OP *)&coro_setup_op; 1129 PL_op = (OP *)&init_perl_op;
889 1130
890 /* copy throw, in case it was set before coro_setup */ 1131 /* copy throw, in case it was set before init_perl */
891 CORO_THROW = coro->except; 1132 CORO_THROW = coro->except;
892}
893 1133
1134 SWAP_SVS (coro);
1135
1136 if (ecb_expect_false (enable_times))
1137 {
1138 coro_times_update ();
1139 coro_times_sub (coro);
1140 }
1141}
1142
894static void 1143static void
895coro_destruct (pTHX_ struct coro *coro) 1144coro_unwind_stacks (pTHX)
896{ 1145{
897 if (!IN_DESTRUCT) 1146 if (!IN_DESTRUCT)
898 { 1147 {
899 /* restore all saved variables and stuff */ 1148 /* restore all saved variables and stuff */
900 LEAVE_SCOPE (0); 1149 LEAVE_SCOPE (0);
… …
908 POPSTACK_TO (PL_mainstack); 1157 POPSTACK_TO (PL_mainstack);
909 1158
910 /* unwind main stack */ 1159 /* unwind main stack */
911 dounwind (-1); 1160 dounwind (-1);
912 } 1161 }
1162}
913 1163
914 SvREFCNT_dec (GvSV (PL_defgv)); 1164static void
915 SvREFCNT_dec (GvAV (PL_defgv)); 1165destroy_perl (pTHX_ struct coro *coro)
916 SvREFCNT_dec (GvSV (PL_errgv)); 1166{
917 SvREFCNT_dec (PL_defoutgv); 1167 SV *svf [9];
918 SvREFCNT_dec (PL_rs);
919 SvREFCNT_dec (GvSV (irsgv));
920 1168
921 SvREFCNT_dec (PL_diehook);
922 SvREFCNT_dec (PL_warnhook);
923 1169 {
924 SvREFCNT_dec (CORO_THROW); 1170 SV *old_current = SvRV (coro_current);
1171 struct coro *current = SvSTATE (old_current);
1172
1173 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1174
1175 save_perl (aTHX_ current);
1176
1177 /* this will cause transfer_check to croak on block*/
1178 SvRV_set (coro_current, (SV *)coro->hv);
1179
1180 load_perl (aTHX_ coro);
1181
1182 coro_unwind_stacks (aTHX);
1183
1184 /* restore swapped sv's */
1185 SWAP_SVS (coro);
1186
1187 coro_destruct_stacks (aTHX);
1188
1189 // now save some sv's to be free'd later
1190 svf [0] = GvSV (PL_defgv);
1191 svf [1] = (SV *)GvAV (PL_defgv);
1192 svf [2] = GvSV (PL_errgv);
1193 svf [3] = (SV *)PL_defoutgv;
1194 svf [4] = PL_rs;
1195 svf [5] = GvSV (irsgv);
1196 svf [6] = (SV *)GvHV (PL_hintgv);
1197 svf [7] = PL_diehook;
1198 svf [8] = PL_warnhook;
1199 assert (9 == sizeof (svf) / sizeof (*svf));
1200
1201 SvRV_set (coro_current, old_current);
1202
1203 load_perl (aTHX_ current);
1204 }
1205
1206 {
1207 unsigned int i;
1208
1209 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1210 SvREFCNT_dec (svf [i]);
1211
925 SvREFCNT_dec (coro->saved_deffh); 1212 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->rouse_cb); 1213 SvREFCNT_dec (coro->rouse_cb);
927 1214 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1215 SvREFCNT_dec (coro->invoke_av);
1216 }
929} 1217}
930 1218
931INLINE void 1219ECB_INLINE void
932free_coro_mortal (pTHX) 1220free_coro_mortal (pTHX)
933{ 1221{
934 if (expect_true (coro_mortal)) 1222 if (ecb_expect_true (coro_mortal))
935 { 1223 {
936 SvREFCNT_dec (coro_mortal); 1224 SvREFCNT_dec ((SV *)coro_mortal);
937 coro_mortal = 0; 1225 coro_mortal = 0;
938 } 1226 }
939} 1227}
940 1228
941static int 1229static int
942runops_trace (pTHX) 1230runops_trace (pTHX)
943{ 1231{
944 COP *oldcop = 0; 1232 COP *oldcop = 0;
945 int oldcxix = -2; 1233 int oldcxix = -2;
946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1234
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1235 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1236 {
951 PERL_ASYNC_CHECK (); 1237 PERL_ASYNC_CHECK ();
952 1238
953 if (cctx->flags & CC_TRACE_ALL) 1239 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1240 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1241 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1242 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1243 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1244 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1245 AV *av = newAV (); /* return values */
960 SV **cb; 1246 SV **cb;
… …
997 1283
998 if (PL_curcop != &PL_compiling) 1284 if (PL_curcop != &PL_compiling)
999 { 1285 {
1000 SV **cb; 1286 SV **cb;
1001 1287
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1288 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1289 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1290 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1291
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1292 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1293 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1294 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1295 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1296 SV *fullname = sv_2mortal (newSV (0));
1012 1297
1013 if (isGV (gv)) 1298 if (isGV (gv))
… …
1018 SAVETMPS; 1303 SAVETMPS;
1019 EXTEND (SP, 3); 1304 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1305 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1306 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1307 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1308 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1309 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1310 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1311 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1312 SPAGAIN;
1028 FREETMPS; 1313 FREETMPS;
… …
1031 } 1316 }
1032 1317
1033 oldcxix = cxstack_ix; 1318 oldcxix = cxstack_ix;
1034 } 1319 }
1035 1320
1036 if (cctx->flags & CC_TRACE_LINE) 1321 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1322 {
1038 dSP; 1323 dSP;
1039 1324
1040 PL_runops = RUNOPS_DEFAULT; 1325 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1326 ENTER;
… …
1060 1345
1061 TAINT_NOT; 1346 TAINT_NOT;
1062 return 0; 1347 return 0;
1063} 1348}
1064 1349
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame; 1350static struct CoroSLF cctx_ssl_frame;
1067 1351
1068static void 1352static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1353slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{ 1354{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0; 1355 ta->prev = 0;
1073} 1356}
1074 1357
1075static int 1358static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1359slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{ 1360{
… …
1079 1362
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1363 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081} 1364}
1082 1365
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1366/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1084static void NOINLINE 1367static void ecb_noinline
1085cctx_prepare (pTHX_ coro_cctx *cctx) 1368cctx_prepare (pTHX)
1086{ 1369{
1087 PL_top_env = &PL_start_env; 1370 PL_top_env = &PL_start_env;
1088 1371
1089 if (cctx->flags & CC_TRACE) 1372 if (cctx_current->flags & CC_TRACE)
1090 PL_runops = runops_trace; 1373 PL_runops = runops_trace;
1091 1374
1092 /* we already must be executing an SLF op, there is no other valid way 1375 /* we already must be executing an SLF op, there is no other valid way
1093 * that can lead to creation of a new cctx */ 1376 * that can lead to creation of a new cctx */
1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1377 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1378 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1096 1379
1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1380 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1098 cctx_ssl_cctx = cctx;
1099 cctx_ssl_frame = slf_frame; 1381 cctx_ssl_frame = slf_frame;
1100 1382
1101 slf_frame.prepare = slf_prepare_set_stacklevel; 1383 slf_frame.prepare = slf_prepare_set_stacklevel;
1102 slf_frame.check = slf_check_set_stacklevel; 1384 slf_frame.check = slf_check_set_stacklevel;
1103} 1385}
1104 1386
1105/* the tail of transfer: execute stuff we can only do after a transfer */ 1387/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void 1388ECB_INLINE void
1107transfer_tail (pTHX) 1389transfer_tail (pTHX)
1108{ 1390{
1109 free_coro_mortal (aTHX); 1391 free_coro_mortal (aTHX);
1110} 1392}
1111 1393
… …
1126 /* normally we would need to skip the entersub here */ 1408 /* normally we would need to skip the entersub here */
1127 /* not doing so will re-execute it, which is exactly what we want */ 1409 /* not doing so will re-execute it, which is exactly what we want */
1128 /* PL_nop = PL_nop->op_next */ 1410 /* PL_nop = PL_nop->op_next */
1129 1411
1130 /* inject a fake subroutine call to cctx_init */ 1412 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1413 cctx_prepare (aTHX);
1132 1414
1133 /* cctx_run is the alternative tail of transfer() */ 1415 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1416 transfer_tail (aTHX);
1135 1417
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1418 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1419 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1420 perl_run (PL_curinterp);
1421 /*
1422 * Unfortunately, there is no way to get at the return values of the
1423 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1424 * runtime errors here, as this is just a random interpreter, not a thread.
1425 */
1139 1426
1140 /* 1427 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1428 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1429 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1430 * reason for perl_run to return. We try to exit by jumping to the
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1431 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * coroutine as Coro has no such concept 1432 * coroutine as Coro has no such concept.
1433 * This actually isn't valid with the pthread backend, but OSes requiring
1434 * that backend are too broken to do it in a standards-compliant way.
1146 */ 1435 */
1147 PL_top_env = main_top_env; 1436 PL_top_env = main_top_env;
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1437 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1438 }
1150} 1439}
… …
1227cctx_destroy (coro_cctx *cctx) 1516cctx_destroy (coro_cctx *cctx)
1228{ 1517{
1229 if (!cctx) 1518 if (!cctx)
1230 return; 1519 return;
1231 1520
1521 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1522
1232 --cctx_count; 1523 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1524 coro_destroy (&cctx->cctx);
1234 1525
1235 /* coro_transfer creates new, empty cctx's */ 1526 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1527 if (cctx->sptr)
… …
1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1545#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1255 1546
1256static coro_cctx * 1547static coro_cctx *
1257cctx_get (pTHX) 1548cctx_get (pTHX)
1258{ 1549{
1259 while (expect_true (cctx_first)) 1550 while (ecb_expect_true (cctx_first))
1260 { 1551 {
1261 coro_cctx *cctx = cctx_first; 1552 coro_cctx *cctx = cctx_first;
1262 cctx_first = cctx->next; 1553 cctx_first = cctx->next;
1263 --cctx_idle; 1554 --cctx_idle;
1264 1555
1265 if (expect_true (!CCTX_EXPIRED (cctx))) 1556 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1266 return cctx; 1557 return cctx;
1267 1558
1268 cctx_destroy (cctx); 1559 cctx_destroy (cctx);
1269 } 1560 }
1270 1561
… …
1275cctx_put (coro_cctx *cctx) 1566cctx_put (coro_cctx *cctx)
1276{ 1567{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1568 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278 1569
1279 /* free another cctx if overlimit */ 1570 /* free another cctx if overlimit */
1280 if (expect_false (cctx_idle >= cctx_max_idle)) 1571 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1281 { 1572 {
1282 coro_cctx *first = cctx_first; 1573 coro_cctx *first = cctx_first;
1283 cctx_first = first->next; 1574 cctx_first = first->next;
1284 --cctx_idle; 1575 --cctx_idle;
1285 1576
… …
1296static void 1587static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1588transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1589{
1299 /* TODO: throwing up here is considered harmful */ 1590 /* TODO: throwing up here is considered harmful */
1300 1591
1301 if (expect_true (prev != next)) 1592 if (ecb_expect_true (prev != next))
1302 { 1593 {
1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1594 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1595 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1305 1596
1306 if (expect_false (next->flags & CF_RUNNING)) 1597 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1308
1309 if (expect_false (next->flags & CF_DESTROYED))
1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1598 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1311 1599
1312#if !PERL_VERSION_ATLEAST (5,10,0) 1600#if !PERL_VERSION_ATLEAST (5,10,0)
1313 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1601 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1602 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif 1603#endif
1316 } 1604 }
1317} 1605}
1318 1606
1319/* always use the TRANSFER macro */ 1607/* always use the TRANSFER macro */
1320static void NOINLINE /* noinline so we have a fixed stackframe */ 1608static void ecb_noinline /* noinline so we have a fixed stackframe */
1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1609transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1322{ 1610{
1323 dSTACKLEVEL; 1611 dSTACKLEVEL;
1324 1612
1325 /* sometimes transfer is only called to set idle_sp */ 1613 /* sometimes transfer is only called to set idle_sp */
1326 if (expect_false (!next)) 1614 if (ecb_expect_false (!prev))
1327 { 1615 {
1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1616 cctx_current->idle_sp = STACKLEVEL;
1329 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1617 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1330 } 1618 }
1331 else if (expect_true (prev != next)) 1619 else if (ecb_expect_true (prev != next))
1332 { 1620 {
1333 coro_cctx *prev__cctx; 1621 coro_cctx *cctx_prev;
1334 1622
1335 if (expect_false (prev->flags & CF_NEW)) 1623 if (ecb_expect_false (prev->flags & CF_NEW))
1336 { 1624 {
1337 /* create a new empty/source context */ 1625 /* create a new empty/source context */
1338 prev->cctx = cctx_new_empty ();
1339 prev->flags &= ~CF_NEW; 1626 prev->flags &= ~CF_NEW;
1340 prev->flags |= CF_RUNNING; 1627 prev->flags |= CF_RUNNING;
1341 } 1628 }
1342 1629
1343 prev->flags &= ~CF_RUNNING; 1630 prev->flags &= ~CF_RUNNING;
1344 next->flags |= CF_RUNNING; 1631 next->flags |= CF_RUNNING;
1345 1632
1346 /* first get rid of the old state */ 1633 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1634 save_perl (aTHX_ prev);
1348 1635
1349 if (expect_false (next->flags & CF_NEW)) 1636 if (ecb_expect_false (next->flags & CF_NEW))
1350 { 1637 {
1351 /* need to start coroutine */ 1638 /* need to start coroutine */
1352 next->flags &= ~CF_NEW; 1639 next->flags &= ~CF_NEW;
1353 /* setup coroutine call */ 1640 /* setup coroutine call */
1354 coro_setup (aTHX_ next); 1641 init_perl (aTHX_ next);
1355 } 1642 }
1356 else 1643 else
1357 load_perl (aTHX_ next); 1644 load_perl (aTHX_ next);
1358 1645
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1646 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1647 if (ecb_expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1648 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1649 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1650 && !force_cctx
1366 )) 1651 ))
1367 { 1652 {
1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1653 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1654 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1655
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1656 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1657 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1658 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1659 if (ecb_expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1660 next->cctx = cctx_get (aTHX);
1378 1661
1379 cctx_put (prev__cctx); 1662 cctx_put (cctx_current);
1380 } 1663 }
1664 else
1665 prev->cctx = cctx_current;
1381 1666
1382 ++next->usecount; 1667 ++next->usecount;
1383 1668
1384 if (expect_true (!next->cctx)) 1669 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1670 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1671
1387 if (expect_false (prev__cctx != next->cctx)) 1672 next->cctx = 0;
1673
1674 if (ecb_expect_false (cctx_prev != cctx_current))
1388 { 1675 {
1389 prev__cctx->top_env = PL_top_env; 1676 cctx_prev->top_env = PL_top_env;
1390 PL_top_env = next->cctx->top_env; 1677 PL_top_env = cctx_current->top_env;
1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1678 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1392 } 1679 }
1393 1680
1394 transfer_tail (aTHX); 1681 transfer_tail (aTHX);
1395 } 1682 }
1396} 1683}
… …
1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1685#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1686#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1400 1687
1401/** high level stuff ********************************************************/ 1688/** high level stuff ********************************************************/
1402 1689
1690/* this function is actually Coro, not Coro::State, but we call it from here */
1691/* because it is convenient - but it hasn't been declared yet for that reason */
1403static int 1692static void
1693coro_call_on_destroy (pTHX_ struct coro *coro);
1694
1695static void
1404coro_state_destroy (pTHX_ struct coro *coro) 1696coro_state_destroy (pTHX_ struct coro *coro)
1405{ 1697{
1406 if (coro->flags & CF_DESTROYED) 1698 if (coro->flags & CF_ZOMBIE)
1407 return 0; 1699 return;
1408 1700
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro); 1701 slf_destroy (aTHX_ coro);
1411 1702
1412 coro->flags |= CF_DESTROYED; 1703 coro->flags |= CF_ZOMBIE;
1413 1704
1414 if (coro->flags & CF_READY) 1705 if (coro->flags & CF_READY)
1415 { 1706 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1707 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1708 /* alternative: look through all ready queues and remove the coro */
1418 --coro_nready; 1709 --coro_nready;
1419 } 1710 }
1420 else 1711 else
1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1712 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1422 1713
1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1424 {
1425 struct coro temp;
1426
1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1428
1429 save_perl (aTHX_ &temp);
1430 load_perl (aTHX_ coro);
1431
1432 coro_destruct (aTHX_ coro);
1433
1434 load_perl (aTHX_ &temp);
1435
1436 coro->slot = 0;
1437 }
1438
1439 cctx_destroy (coro->cctx);
1440 SvREFCNT_dec (coro->args);
1441
1442 if (coro->next) coro->next->prev = coro->prev; 1714 if (coro->next) coro->next->prev = coro->prev;
1443 if (coro->prev) coro->prev->next = coro->next; 1715 if (coro->prev) coro->prev->next = coro->next;
1444 if (coro == coro_first) coro_first = coro->next; 1716 if (coro == coro_first) coro_first = coro->next;
1445 1717
1446 return 1; 1718 if (coro->mainstack
1719 && coro->mainstack != main_mainstack
1720 && coro->slot
1721 && !PL_dirty)
1722 destroy_perl (aTHX_ coro);
1723
1724 cctx_destroy (coro->cctx);
1725 SvREFCNT_dec (coro->startcv);
1726 SvREFCNT_dec (coro->args);
1727 SvREFCNT_dec (coro->swap_sv);
1728 SvREFCNT_dec (CORO_THROW);
1729
1730 coro_call_on_destroy (aTHX_ coro);
1731
1732 /* more destruction mayhem in coro_state_free */
1447} 1733}
1448 1734
1449static int 1735static int
1450coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1736coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1451{ 1737{
1452 struct coro *coro = (struct coro *)mg->mg_ptr; 1738 struct coro *coro = (struct coro *)mg->mg_ptr;
1453 mg->mg_ptr = 0; 1739 mg->mg_ptr = 0;
1454 1740
1455 coro->hv = 0;
1456
1457 if (--coro->refcnt < 0)
1458 {
1459 coro_state_destroy (aTHX_ coro); 1741 coro_state_destroy (aTHX_ coro);
1742 SvREFCNT_dec (coro->on_destroy);
1743 SvREFCNT_dec (coro->status);
1744
1460 Safefree (coro); 1745 Safefree (coro);
1461 }
1462 1746
1463 return 0; 1747 return 0;
1464} 1748}
1465 1749
1466static int 1750static int ecb_cold
1467coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1751coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1468{ 1752{
1469 struct coro *coro = (struct coro *)mg->mg_ptr; 1753 /* called when perl clones the current process the slow way (windows process emulation) */
1470 1754 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1471 ++coro->refcnt; 1755 mg->mg_ptr = 0;
1756 mg->mg_virtual = 0;
1472 1757
1473 return 0; 1758 return 0;
1474} 1759}
1475 1760
1476static MGVTBL coro_state_vtbl = { 1761static MGVTBL coro_state_vtbl = {
… …
1499 1784
1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1785 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1501 TRANSFER (ta, 1); 1786 TRANSFER (ta, 1);
1502} 1787}
1503 1788
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1527/** Coro ********************************************************************/ 1789/** Coro ********************************************************************/
1528 1790
1529INLINE void 1791ECB_INLINE void
1530coro_enq (pTHX_ struct coro *coro) 1792coro_enq (pTHX_ struct coro *coro)
1531{ 1793{
1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1794 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1533}
1534 1795
1535INLINE SV * 1796 SvREFCNT_inc_NN (coro->hv);
1797
1798 coro->next_ready = 0;
1799 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1800 ready [1] = coro;
1801}
1802
1803ECB_INLINE struct coro *
1536coro_deq (pTHX) 1804coro_deq (pTHX)
1537{ 1805{
1538 int prio; 1806 int prio;
1539 1807
1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1808 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1541 if (AvFILLp (coro_ready [prio]) >= 0) 1809 {
1542 return av_shift (coro_ready [prio]); 1810 struct coro **ready = coro_ready [prio];
1811
1812 if (ready [0])
1813 {
1814 struct coro *coro = ready [0];
1815 ready [0] = coro->next_ready;
1816 return coro;
1817 }
1818 }
1543 1819
1544 return 0; 1820 return 0;
1821}
1822
1823static void
1824invoke_sv_ready_hook_helper (void)
1825{
1826 dTHX;
1827 dSP;
1828
1829 ENTER;
1830 SAVETMPS;
1831
1832 PUSHMARK (SP);
1833 PUTBACK;
1834 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1835
1836 FREETMPS;
1837 LEAVE;
1545} 1838}
1546 1839
1547static int 1840static int
1548api_ready (pTHX_ SV *coro_sv) 1841api_ready (pTHX_ SV *coro_sv)
1549{ 1842{
1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1553
1554 if (SvROK (coro_sv))
1555 coro_sv = SvRV (coro_sv);
1556
1557 coro = SvSTATE (coro_sv); 1843 struct coro *coro = SvSTATE (coro_sv);
1558 1844
1559 if (coro->flags & CF_READY) 1845 if (coro->flags & CF_READY)
1560 return 0; 1846 return 0;
1561 1847
1562 coro->flags |= CF_READY; 1848 coro->flags |= CF_READY;
1563 1849
1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro); 1850 coro_enq (aTHX_ coro);
1568 ++coro_nready;
1569 1851
1570 if (sv_hook) 1852 if (!coro_nready++)
1571 { 1853 if (coroapi.readyhook)
1572 dSP; 1854 coroapi.readyhook ();
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1587 1855
1588 return 1; 1856 return 1;
1589} 1857}
1590 1858
1591static int 1859static int
1592api_is_ready (pTHX_ SV *coro_sv) 1860api_is_ready (pTHX_ SV *coro_sv)
1593{ 1861{
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1862 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1863}
1596 1864
1865/* expects to own a reference to next->hv */
1597INLINE void 1866ECB_INLINE void
1598prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1867prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1868{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 next_sv = coro_deq (aTHX);
1605
1606 /* nothing to schedule: call the idle handler */
1607 if (expect_false (!next_sv))
1608 {
1609 dSP;
1610
1611 ENTER;
1612 SAVETMPS;
1613
1614 PUSHMARK (SP);
1615 PUTBACK;
1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE_hv (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 break;
1635 }
1636
1637 /* free this only after the transfer */
1638 prev_sv = SvRV (coro_current); 1869 SV *prev_sv = SvRV (coro_current);
1870
1639 ta->prev = SvSTATE_hv (prev_sv); 1871 ta->prev = SvSTATE_hv (prev_sv);
1872 ta->next = next;
1873
1640 TRANSFER_CHECK (*ta); 1874 TRANSFER_CHECK (*ta);
1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1875
1642 ta->next->flags &= ~CF_READY;
1643 SvRV_set (coro_current, next_sv); 1876 SvRV_set (coro_current, (SV *)next->hv);
1644 1877
1645 free_coro_mortal (aTHX); 1878 free_coro_mortal (aTHX);
1646 coro_mortal = prev_sv; 1879 coro_mortal = prev_sv;
1647} 1880}
1648 1881
1882static void
1883prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1884{
1885 for (;;)
1886 {
1887 struct coro *next = coro_deq (aTHX);
1888
1889 if (ecb_expect_true (next))
1890 {
1891 /* cannot transfer to destroyed coros, skip and look for next */
1892 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1893 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1894 else
1895 {
1896 next->flags &= ~CF_READY;
1897 --coro_nready;
1898
1899 prepare_schedule_to (aTHX_ ta, next);
1900 break;
1901 }
1902 }
1903 else
1904 {
1905 /* nothing to schedule: call the idle handler */
1906 if (SvROK (sv_idle)
1907 && SvOBJECT (SvRV (sv_idle)))
1908 {
1909 if (SvRV (sv_idle) == SvRV (coro_current))
1910 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1911
1912 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1913 api_ready (aTHX_ SvRV (sv_idle));
1914 --coro_nready;
1915 }
1916 else
1917 {
1918 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1919 dSP;
1920
1921 ENTER;
1922 SAVETMPS;
1923
1924 PUSHMARK (SP);
1925 PUTBACK;
1926 call_sv (sv_idle, G_VOID | G_DISCARD);
1927
1928 FREETMPS;
1929 LEAVE;
1930 }
1931 }
1932 }
1933}
1934
1649INLINE void 1935ECB_INLINE void
1650prepare_cede (pTHX_ struct coro_transfer_args *ta) 1936prepare_cede (pTHX_ struct coro_transfer_args *ta)
1651{ 1937{
1652 api_ready (aTHX_ coro_current); 1938 api_ready (aTHX_ coro_current);
1653 prepare_schedule (aTHX_ ta); 1939 prepare_schedule (aTHX_ ta);
1654} 1940}
1655 1941
1656INLINE void 1942ECB_INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1943prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{ 1944{
1659 SV *prev = SvRV (coro_current); 1945 SV *prev = SvRV (coro_current);
1660 1946
1661 if (coro_nready) 1947 if (coro_nready)
… …
1674 1960
1675 prepare_schedule (aTHX_ &ta); 1961 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1); 1962 TRANSFER (ta, 1);
1677} 1963}
1678 1964
1965static void
1966api_schedule_to (pTHX_ SV *coro_sv)
1967{
1968 struct coro_transfer_args ta;
1969 struct coro *next = SvSTATE (coro_sv);
1970
1971 SvREFCNT_inc_NN (coro_sv);
1972 prepare_schedule_to (aTHX_ &ta, next);
1973}
1974
1679static int 1975static int
1680api_cede (pTHX) 1976api_cede (pTHX)
1681{ 1977{
1682 struct coro_transfer_args ta; 1978 struct coro_transfer_args ta;
1683 1979
1684 prepare_cede (aTHX_ &ta); 1980 prepare_cede (aTHX_ &ta);
1685 1981
1686 if (expect_true (ta.prev != ta.next)) 1982 if (ecb_expect_true (ta.prev != ta.next))
1687 { 1983 {
1688 TRANSFER (ta, 1); 1984 TRANSFER (ta, 1);
1689 return 1; 1985 return 1;
1690 } 1986 }
1691 else 1987 else
… …
1710static void 2006static void
1711api_trace (pTHX_ SV *coro_sv, int flags) 2007api_trace (pTHX_ SV *coro_sv, int flags)
1712{ 2008{
1713 struct coro *coro = SvSTATE (coro_sv); 2009 struct coro *coro = SvSTATE (coro_sv);
1714 2010
2011 if (coro->flags & CF_RUNNING)
2012 croak ("cannot enable tracing on a running coroutine, caught");
2013
1715 if (flags & CC_TRACE) 2014 if (flags & CC_TRACE)
1716 { 2015 {
1717 if (!coro->cctx) 2016 if (!coro->cctx)
1718 coro->cctx = cctx_new_run (); 2017 coro->cctx = cctx_new_run ();
1719 else if (!(coro->cctx->flags & CC_TRACE)) 2018 else if (!(coro->cctx->flags & CC_TRACE))
1720 croak ("cannot enable tracing on coroutine with custom stack,"); 2019 croak ("cannot enable tracing on coroutine with custom stack, caught");
1721 2020
1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2021 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1723 } 2022 }
1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2023 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1725 { 2024 {
… …
1730 else 2029 else
1731 coro->slot->runops = RUNOPS_DEFAULT; 2030 coro->slot->runops = RUNOPS_DEFAULT;
1732 } 2031 }
1733} 2032}
1734 2033
2034static void
2035coro_push_av (pTHX_ AV *av, I32 gimme_v)
2036{
2037 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2038 {
2039 dSP;
2040
2041 if (gimme_v == G_SCALAR)
2042 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2043 else
2044 {
2045 int i;
2046 EXTEND (SP, AvFILLp (av) + 1);
2047
2048 for (i = 0; i <= AvFILLp (av); ++i)
2049 PUSHs (AvARRAY (av)[i]);
2050 }
2051
2052 PUTBACK;
2053 }
2054}
2055
2056static void
2057coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2058{
2059 if (!coro->on_destroy)
2060 coro->on_destroy = newAV ();
2061
2062 av_push (coro->on_destroy, cb);
2063}
2064
2065static void
2066slf_destroy_join (pTHX_ struct CoroSLF *frame)
2067{
2068 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2069}
2070
2071static int
2072slf_check_join (pTHX_ struct CoroSLF *frame)
2073{
2074 struct coro *coro = (struct coro *)frame->data;
2075
2076 if (!coro->status)
2077 return 1;
2078
2079 frame->destroy = 0;
2080
2081 coro_push_av (aTHX_ coro->status, GIMME_V);
2082
2083 SvREFCNT_dec ((SV *)coro->hv);
2084
2085 return 0;
2086}
2087
2088static void
2089slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2090{
2091 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2092
2093 if (items > 1)
2094 croak ("join called with too many arguments");
2095
2096 if (coro->status)
2097 frame->prepare = prepare_nop;
2098 else
2099 {
2100 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2101 frame->prepare = prepare_schedule;
2102 }
2103
2104 frame->check = slf_check_join;
2105 frame->destroy = slf_destroy_join;
2106 frame->data = (void *)coro;
2107 SvREFCNT_inc (coro->hv);
2108}
2109
2110static void
2111coro_call_on_destroy (pTHX_ struct coro *coro)
2112{
2113 AV *od = coro->on_destroy;
2114
2115 if (!od)
2116 return;
2117
2118 while (AvFILLp (od) >= 0)
2119 {
2120 SV *cb = sv_2mortal (av_pop (od));
2121
2122 /* coro hv's (and only hv's at the moment) are supported as well */
2123 if (SvSTATEhv_p (aTHX_ cb))
2124 api_ready (aTHX_ cb);
2125 else
2126 {
2127 dSP; /* don't disturb outer sp */
2128 PUSHMARK (SP);
2129
2130 if (coro->status)
2131 {
2132 PUTBACK;
2133 coro_push_av (aTHX_ coro->status, G_ARRAY);
2134 SPAGAIN;
2135 }
2136
2137 PUTBACK;
2138 call_sv (cb, G_VOID | G_DISCARD);
2139 }
2140 }
2141}
2142
2143static void
2144coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2145{
2146 AV *av;
2147
2148 if (coro->status)
2149 {
2150 av = coro->status;
2151 av_clear (av);
2152 }
2153 else
2154 av = coro->status = newAV ();
2155
2156 /* items are actually not so common, so optimise for this case */
2157 if (items)
2158 {
2159 int i;
2160
2161 av_extend (av, items - 1);
2162
2163 for (i = 0; i < items; ++i)
2164 av_push (av, SvREFCNT_inc_NN (arg [i]));
2165 }
2166}
2167
2168static void
2169slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2170{
2171 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2172 api_ready (aTHX_ sv_manager);
2173
2174 frame->prepare = prepare_schedule;
2175 frame->check = slf_check_repeat;
2176
2177 /* as a minor optimisation, we could unwind all stacks here */
2178 /* but that puts extra pressure on pp_slf, and is not worth much */
2179 /*coro_unwind_stacks (aTHX);*/
2180}
2181
2182static void
2183slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 HV *coro_hv = (HV *)SvRV (coro_current);
2186
2187 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2188 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2189}
2190
2191static void
2192slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2193{
2194 HV *coro_hv;
2195 struct coro *coro;
2196
2197 if (items <= 0)
2198 croak ("Coro::cancel called without coro object,");
2199
2200 coro = SvSTATE (arg [0]);
2201 coro_hv = coro->hv;
2202
2203 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2204
2205 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2206 {
2207 /* coro currently busy cancelling something, so just notify it */
2208 coro->slf_frame.data = (void *)coro;
2209
2210 frame->prepare = prepare_nop;
2211 frame->check = slf_check_nop;
2212 }
2213 else if (coro_hv == (HV *)SvRV (coro_current))
2214 {
2215 /* cancelling the current coro is allowed, and equals terminate */
2216 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2217 }
2218 else
2219 {
2220 struct coro *self = SvSTATE_current;
2221
2222 /* otherwise we cancel directly, purely for speed reasons
2223 * unfortunately, this requires some magic trickery, as
2224 * somebody else could cancel us, so we have to fight the cancellation.
2225 * this is ugly, and hopefully fully worth the extra speed.
2226 * besides, I can't get the slow-but-safe version working...
2227 */
2228 slf_frame.data = 0;
2229 self->flags |= CF_NOCANCEL;
2230 coro_state_destroy (aTHX_ coro);
2231 self->flags &= ~CF_NOCANCEL;
2232
2233 if (slf_frame.data)
2234 {
2235 /* while we were busy we have been cancelled, so terminate */
2236 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2237 }
2238 else
2239 {
2240 frame->prepare = prepare_nop;
2241 frame->check = slf_check_nop;
2242 }
2243 }
2244}
2245
2246static int
2247slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2248{
2249 frame->prepare = 0;
2250 coro_unwind_stacks (aTHX);
2251
2252 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2253
2254 return 1;
2255}
2256
2257static int
2258safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2259{
2260 if (coro->cctx)
2261 croak ("coro inside C callback, unable to cancel at this time, caught");
2262
2263 if (coro->flags & CF_NEW)
2264 {
2265 coro_set_status (aTHX_ coro, arg, items);
2266 coro_state_destroy (aTHX_ coro);
2267 }
2268 else
2269 {
2270 if (!coro->slf_frame.prepare)
2271 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2272
2273 slf_destroy (aTHX_ coro);
2274
2275 coro_set_status (aTHX_ coro, arg, items);
2276 coro->slf_frame.prepare = prepare_nop;
2277 coro->slf_frame.check = slf_check_safe_cancel;
2278
2279 api_ready (aTHX_ (SV *)coro->hv);
2280 }
2281
2282 return 1;
2283}
2284
2285/*****************************************************************************/
2286/* async pool handler */
2287
2288static int
2289slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2290{
2291 HV *hv = (HV *)SvRV (coro_current);
2292 struct coro *coro = (struct coro *)frame->data;
2293
2294 if (!coro->invoke_cb)
2295 return 1; /* loop till we have invoke */
2296 else
2297 {
2298 hv_store (hv, "desc", sizeof ("desc") - 1,
2299 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2300
2301 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2302
2303 {
2304 dSP;
2305 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2306 PUTBACK;
2307 }
2308
2309 SvREFCNT_dec (GvAV (PL_defgv));
2310 GvAV (PL_defgv) = coro->invoke_av;
2311 coro->invoke_av = 0;
2312
2313 return 0;
2314 }
2315}
2316
2317static void
2318slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2319{
2320 HV *hv = (HV *)SvRV (coro_current);
2321 struct coro *coro = SvSTATE_hv ((SV *)hv);
2322
2323 if (ecb_expect_true (coro->saved_deffh))
2324 {
2325 /* subsequent iteration */
2326 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2327 coro->saved_deffh = 0;
2328
2329 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2330 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2331 {
2332 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2333 return;
2334 }
2335 else
2336 {
2337 av_clear (GvAV (PL_defgv));
2338 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2339
2340 coro->prio = 0;
2341
2342 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2343 api_trace (aTHX_ coro_current, 0);
2344
2345 frame->prepare = prepare_schedule;
2346 av_push (av_async_pool, SvREFCNT_inc (hv));
2347 }
2348 }
2349 else
2350 {
2351 /* first iteration, simply fall through */
2352 frame->prepare = prepare_nop;
2353 }
2354
2355 frame->check = slf_check_pool_handler;
2356 frame->data = (void *)coro;
2357}
2358
1735/*****************************************************************************/ 2359/*****************************************************************************/
1736/* rouse callback */ 2360/* rouse callback */
1737 2361
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2362#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739 2363
1740static void 2364static void
1741coro_rouse_callback (pTHX_ CV *cv) 2365coro_rouse_callback (pTHX_ CV *cv)
1742{ 2366{
1743 dXSARGS; 2367 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG; 2368 SV *data = (SV *)S_GENSUB_ARG;
1745 2369
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2370 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 { 2371 {
1748 /* first call, set args */ 2372 /* first call, set args */
1749 int i; 2373 SV *coro = SvRV (data);
1750 AV *av = newAV (); 2374 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752 2375
1753 SvRV_set (data, (SV *)av); 2376 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756 2377
1757 /* better take a full copy of the arguments */ 2378 /* better take a full copy of the arguments */
1758 while (items--) 2379 while (items--)
1759 av_store (av, items, newSVsv (ST (items))); 2380 av_store (av, items, newSVsv (ST (items)));
2381
2382 api_ready (aTHX_ coro);
2383 SvREFCNT_dec (coro);
1760 } 2384 }
1761 2385
1762 XSRETURN_EMPTY; 2386 XSRETURN_EMPTY;
1763} 2387}
1764 2388
… …
1781 2405
1782 EXTEND (SP, AvFILLp (av) + 1); 2406 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i) 2407 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2408 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785 2409
1786 /* we have stolen the elements, so ste length to zero and free */ 2410 /* we have stolen the elements, so set length to zero and free */
1787 AvFILLp (av) = -1; 2411 AvFILLp (av) = -1;
1788 av_undef (av); 2412 av_undef (av);
1789 2413
1790 PUTBACK; 2414 PUTBACK;
1791 } 2415 }
… …
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV 2439 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2440 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,"); 2441 croak ("Coro::rouse_wait called with illegal callback argument,");
1818 2442
1819 { 2443 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2444 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG; 2445 SV *data = (SV *)S_GENSUB_ARG;
1822 2446
1823 frame->data = (void *)data; 2447 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2448 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait; 2449 frame->check = slf_check_rouse_wait;
1826 } 2450 }
… …
1830coro_new_rouse_cb (pTHX) 2454coro_new_rouse_cb (pTHX)
1831{ 2455{
1832 HV *hv = (HV *)SvRV (coro_current); 2456 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv); 2457 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv); 2458 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2459 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1836 2460
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2461 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */ 2462 SvREFCNT_dec (data); /* magicext increases the refcount */
1839 2463
1840 SvREFCNT_dec (coro->rouse_cb); 2464 SvREFCNT_dec (coro->rouse_cb);
… …
1898 frame->prepare = prepare_schedule; 2522 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop; 2523 frame->check = slf_check_nop;
1900} 2524}
1901 2525
1902static void 2526static void
2527slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2528{
2529 struct coro *next = (struct coro *)slf_frame.data;
2530
2531 SvREFCNT_inc_NN (next->hv);
2532 prepare_schedule_to (aTHX_ ta, next);
2533}
2534
2535static void
2536slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2537{
2538 if (!items)
2539 croak ("Coro::schedule_to expects a coroutine argument, caught");
2540
2541 frame->data = (void *)SvSTATE (arg [0]);
2542 frame->prepare = slf_prepare_schedule_to;
2543 frame->check = slf_check_nop;
2544}
2545
2546static void
2547slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2548{
2549 api_ready (aTHX_ SvRV (coro_current));
2550
2551 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2552}
2553
2554static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2555slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{ 2556{
1905 frame->prepare = prepare_cede; 2557 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop; 2558 frame->check = slf_check_nop;
1907} 2559}
… …
1909static void 2561static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2562slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{ 2563{
1912 frame->prepare = prepare_cede_notself; 2564 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop; 2565 frame->check = slf_check_nop;
2566}
2567
2568/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2569static void
2570slf_destroy (pTHX_ struct coro *coro)
2571{
2572 /* this callback is reserved for slf functions needing to do cleanup */
2573 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2574 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2575
2576 /*
2577 * The on_destroy above most likely is from an SLF call.
2578 * Since by definition the SLF call will not finish when we destroy
2579 * the coro, we will have to force-finish it here, otherwise
2580 * cleanup functions cannot call SLF functions.
2581 */
2582 coro->slf_frame.prepare = 0;
1914} 2583}
1915 2584
1916/* 2585/*
1917 * these not obviously related functions are all rolled into one 2586 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same 2587 * function to increase chances that they all will call transfer with the same
… …
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2594 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926 2595
1927 /* set up the slf frame, unless it has already been set-up */ 2596 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */ 2597 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */ 2598 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare)) 2599 if (ecb_expect_true (!slf_frame.prepare))
1931 { 2600 {
1932 /* first iteration */ 2601 /* first iteration */
1933 dSP; 2602 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1; 2603 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */ 2604 int items = SP - arg; /* args without function object */
… …
1976 while (slf_frame.check (aTHX_ &slf_frame)); 2645 while (slf_frame.check (aTHX_ &slf_frame));
1977 2646
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2647 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979 2648
1980 /* exception handling */ 2649 /* exception handling */
1981 if (expect_false (CORO_THROW)) 2650 if (ecb_expect_false (CORO_THROW))
1982 { 2651 {
1983 SV *exception = sv_2mortal (CORO_THROW); 2652 SV *exception = sv_2mortal (CORO_THROW);
1984 2653
1985 CORO_THROW = 0; 2654 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception); 2655 sv_setsv (ERRSV, exception);
1987 croak (0); 2656 croak (0);
1988 } 2657 }
1989 2658
1990 /* return value handling - mostly like entersub */ 2659 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */ 2660 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR) 2661 if (GIMME_V == G_SCALAR
2662 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1993 { 2663 {
1994 dSP; 2664 dSP;
1995 SV **bot = PL_stack_base + checkmark; 2665 SV **bot = PL_stack_base + checkmark;
1996 2666
1997 if (sp == bot) /* too few, push undef */ 2667 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef; 2668 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */ 2669 else /* too many, take last one */
2000 bot [1] = *sp; 2670 bot [1] = *sp;
2001 2671
2002 SP = bot + 1; 2672 SP = bot + 1;
2003 2673
2004 PUTBACK; 2674 PUTBACK;
… …
2037 if (PL_op->op_flags & OPf_STACKED) 2707 if (PL_op->op_flags & OPf_STACKED)
2038 { 2708 {
2039 if (items > slf_arga) 2709 if (items > slf_arga)
2040 { 2710 {
2041 slf_arga = items; 2711 slf_arga = items;
2042 free (slf_argv); 2712 Safefree (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *)); 2713 New (0, slf_argv, slf_arga, SV *);
2044 } 2714 }
2045 2715
2046 slf_argc = items; 2716 slf_argc = items;
2047 2717
2048 for (i = 0; i < items; ++i) 2718 for (i = 0; i < items; ++i)
… …
2050 } 2720 }
2051 else 2721 else
2052 slf_argc = 0; 2722 slf_argc = 0;
2053 2723
2054 PL_op->op_ppaddr = pp_slf; 2724 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2725 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2056 2726
2057 PL_op = (OP *)&slf_restore; 2727 PL_op = (OP *)&slf_restore;
2728}
2729
2730/*****************************************************************************/
2731/* dynamic wind */
2732
2733static void
2734on_enterleave_call (pTHX_ SV *cb)
2735{
2736 dSP;
2737
2738 PUSHSTACK;
2739
2740 PUSHMARK (SP);
2741 PUTBACK;
2742 call_sv (cb, G_VOID | G_DISCARD);
2743 SPAGAIN;
2744
2745 POPSTACK;
2746}
2747
2748static SV *
2749coro_avp_pop_and_free (pTHX_ AV **avp)
2750{
2751 AV *av = *avp;
2752 SV *res = av_pop (av);
2753
2754 if (AvFILLp (av) < 0)
2755 {
2756 *avp = 0;
2757 SvREFCNT_dec (av);
2758 }
2759
2760 return res;
2761}
2762
2763static void
2764coro_pop_on_enter (pTHX_ void *coro)
2765{
2766 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2767 SvREFCNT_dec (cb);
2768}
2769
2770static void
2771coro_pop_on_leave (pTHX_ void *coro)
2772{
2773 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2774 on_enterleave_call (aTHX_ sv_2mortal (cb));
2058} 2775}
2059 2776
2060/*****************************************************************************/ 2777/*****************************************************************************/
2061/* PerlIO::cede */ 2778/* PerlIO::cede */
2062 2779
… …
2064{ 2781{
2065 PerlIOBuf base; 2782 PerlIOBuf base;
2066 NV next, every; 2783 NV next, every;
2067} PerlIOCede; 2784} PerlIOCede;
2068 2785
2069static IV 2786static IV ecb_cold
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2787PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{ 2788{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2789 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073 2790
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2791 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every; 2792 self->next = nvtime () + self->every;
2076 2793
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2794 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078} 2795}
2079 2796
2080static SV * 2797static SV * ecb_cold
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2798PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{ 2799{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2800 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084 2801
2085 return newSVnv (self->every); 2802 return newSVnv (self->every);
… …
2136/* Coro::Semaphore & Coro::Signal */ 2853/* Coro::Semaphore & Coro::Signal */
2137 2854
2138static SV * 2855static SV *
2139coro_waitarray_new (pTHX_ int count) 2856coro_waitarray_new (pTHX_ int count)
2140{ 2857{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2858 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV (); 2859 AV *av = newAV ();
2143 SV **ary; 2860 SV **ary;
2144 2861
2145 /* unfortunately, building manually saves memory */ 2862 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *); 2863 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary; 2864 AvALLOC (av) = ary;
2865#if PERL_VERSION_ATLEAST (5,10,0)
2148 AvARRAY (av) = ary; 2866 AvARRAY (av) = ary;
2867#else
2868 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2869 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2870 SvPVX ((SV *)av) = (char *)ary;
2871#endif
2149 AvMAX (av) = 1; 2872 AvMAX (av) = 1;
2150 AvFILLp (av) = 0; 2873 AvFILLp (av) = 0;
2151 ary [0] = newSViv (count); 2874 ary [0] = newSViv (count);
2152 2875
2153 return newRV_noinc ((SV *)av); 2876 return newRV_noinc ((SV *)av);
… …
2173 AvARRAY (av)[0] = AvARRAY (av)[1]; 2896 AvARRAY (av)[0] = AvARRAY (av)[1];
2174 AvARRAY (av)[1] = count_sv; 2897 AvARRAY (av)[1] = count_sv;
2175 cb = av_shift (av); 2898 cb = av_shift (av);
2176 2899
2177 if (SvOBJECT (cb)) 2900 if (SvOBJECT (cb))
2901 {
2178 api_ready (aTHX_ cb); 2902 api_ready (aTHX_ cb);
2179 else 2903 --count;
2180 croak ("callbacks not yet supported"); 2904 }
2905 else if (SvTYPE (cb) == SVt_PVCV)
2906 {
2907 dSP;
2908 PUSHMARK (SP);
2909 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2910 PUTBACK;
2911 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2912 }
2181 2913
2182 SvREFCNT_dec (cb); 2914 SvREFCNT_dec (cb);
2183
2184 --count;
2185 } 2915 }
2186} 2916}
2187 2917
2188static void 2918static void
2189coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2919coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2190{ 2920{
2191 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2921 /* call $sem->adjust (0) to possibly wake up some other waiters */
2192 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2922 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2193} 2923}
2194 2924
2195static int 2925static int
2196slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2926slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2197{ 2927{
2198 AV *av = (AV *)frame->data; 2928 AV *av = (AV *)frame->data;
2199 SV *count_sv = AvARRAY (av)[0]; 2929 SV *count_sv = AvARRAY (av)[0];
2930 SV *coro_hv = SvRV (coro_current);
2200 2931
2201 /* if we are about to throw, don't actually acquire the lock, just throw */ 2932 /* if we are about to throw, don't actually acquire the lock, just throw */
2202 if (CORO_THROW) 2933 if (CORO_THROW)
2203 return 0; 2934 return 0;
2204 else if (SvIVX (count_sv) > 0) 2935 else if (SvIVX (count_sv) > 0)
2205 { 2936 {
2206 SvSTATE_current->on_destroy = 0; 2937 frame->destroy = 0;
2207 2938
2208 if (acquire) 2939 if (acquire)
2209 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2940 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2210 else 2941 else
2211 coro_semaphore_adjust (aTHX_ av, 0); 2942 coro_semaphore_adjust (aTHX_ av, 0);
… …
2216 { 2947 {
2217 int i; 2948 int i;
2218 /* if we were woken up but can't down, we look through the whole */ 2949 /* if we were woken up but can't down, we look through the whole */
2219 /* waiters list and only add us if we aren't in there already */ 2950 /* waiters list and only add us if we aren't in there already */
2220 /* this avoids some degenerate memory usage cases */ 2951 /* this avoids some degenerate memory usage cases */
2221 2952 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2222 for (i = 1; i <= AvFILLp (av); ++i)
2223 if (AvARRAY (av)[i] == SvRV (coro_current)) 2953 if (AvARRAY (av)[i] == coro_hv)
2224 return 1; 2954 return 1;
2225 2955
2226 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2956 av_push (av, SvREFCNT_inc (coro_hv));
2227 return 1; 2957 return 1;
2228 } 2958 }
2229} 2959}
2230 2960
2231static int 2961static int
… …
2254 { 2984 {
2255 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2985 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2256 2986
2257 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2987 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2258 frame->prepare = prepare_schedule; 2988 frame->prepare = prepare_schedule;
2259
2260 /* to avoid race conditions when a woken-up coro gets terminated */ 2989 /* to avoid race conditions when a woken-up coro gets terminated */
2261 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2990 /* we arrange for a temporary on_destroy that calls adjust (0) */
2262 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2991 frame->destroy = coro_semaphore_destroy;
2263 } 2992 }
2264} 2993}
2265 2994
2266static void 2995static void
2267slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2996slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2271} 3000}
2272 3001
2273static void 3002static void
2274slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3003slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2275{ 3004{
3005 if (items >= 2)
3006 {
3007 /* callback form */
3008 AV *av = (AV *)SvRV (arg [0]);
3009 SV *cb_cv = s_get_cv_croak (arg [1]);
3010
3011 av_push (av, SvREFCNT_inc_NN (cb_cv));
3012
3013 if (SvIVX (AvARRAY (av)[0]) > 0)
3014 coro_semaphore_adjust (aTHX_ av, 0);
3015
3016 frame->prepare = prepare_nop;
3017 frame->check = slf_check_nop;
3018 }
3019 else
3020 {
2276 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 3021 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2277 frame->check = slf_check_semaphore_wait; 3022 frame->check = slf_check_semaphore_wait;
3023 }
2278} 3024}
2279 3025
2280/* signal */ 3026/* signal */
2281 3027
2282static void 3028static void
… …
2294 AvARRAY (av)[0] = AvARRAY (av)[1]; 3040 AvARRAY (av)[0] = AvARRAY (av)[1];
2295 AvARRAY (av)[1] = cb; 3041 AvARRAY (av)[1] = cb;
2296 3042
2297 cb = av_shift (av); 3043 cb = av_shift (av);
2298 3044
3045 if (SvTYPE (cb) == SVt_PVCV)
3046 {
3047 dSP;
3048 PUSHMARK (SP);
3049 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3050 PUTBACK;
3051 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3052 }
3053 else
3054 {
2299 api_ready (aTHX_ cb); 3055 api_ready (aTHX_ cb);
2300 sv_setiv (cb, 0); /* signal waiter */ 3056 sv_setiv (cb, 0); /* signal waiter */
3057 }
3058
2301 SvREFCNT_dec (cb); 3059 SvREFCNT_dec (cb);
2302 3060
2303 --count; 3061 --count;
2304 } 3062 }
2305} 3063}
… …
2314static void 3072static void
2315slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3073slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2316{ 3074{
2317 AV *av = (AV *)SvRV (arg [0]); 3075 AV *av = (AV *)SvRV (arg [0]);
2318 3076
3077 if (items >= 2)
3078 {
3079 SV *cb_cv = s_get_cv_croak (arg [1]);
3080 av_push (av, SvREFCNT_inc_NN (cb_cv));
3081
2319 if (SvIVX (AvARRAY (av)[0])) 3082 if (SvIVX (AvARRAY (av)[0]))
3083 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3084
3085 frame->prepare = prepare_nop;
3086 frame->check = slf_check_nop;
3087 }
3088 else if (SvIVX (AvARRAY (av)[0]))
2320 { 3089 {
2321 SvIVX (AvARRAY (av)[0]) = 0; 3090 SvIVX (AvARRAY (av)[0]) = 0;
2322 frame->prepare = prepare_nop; 3091 frame->prepare = prepare_nop;
2323 frame->check = slf_check_nop; 3092 frame->check = slf_check_nop;
2324 } 3093 }
2325 else 3094 else
2326 { 3095 {
2327 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3096 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2328 3097
2329 av_push (av, waiter); 3098 av_push (av, waiter);
2330 3099
2331 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3100 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2332 frame->prepare = prepare_schedule; 3101 frame->prepare = prepare_schedule;
… …
2350 3119
2351static void 3120static void
2352coro_aio_callback (pTHX_ CV *cv) 3121coro_aio_callback (pTHX_ CV *cv)
2353{ 3122{
2354 dXSARGS; 3123 dXSARGS;
2355 AV *state = (AV *)GENSUB_ARG; 3124 AV *state = (AV *)S_GENSUB_ARG;
2356 SV *coro = av_pop (state); 3125 SV *coro = av_pop (state);
2357 SV *data_sv = newSV (sizeof (struct io_state)); 3126 SV *data_sv = newSV (sizeof (struct io_state));
2358 3127
2359 av_extend (state, items); 3128 av_extend (state, items - 1);
2360 3129
2361 sv_upgrade (data_sv, SVt_PV); 3130 sv_upgrade (data_sv, SVt_PV);
2362 SvCUR_set (data_sv, sizeof (struct io_state)); 3131 SvCUR_set (data_sv, sizeof (struct io_state));
2363 SvPOK_only (data_sv); 3132 SvPOK_only (data_sv);
2364 3133
… …
2445 dSP; 3214 dSP;
2446 3215
2447 static SV *prio_cv; 3216 static SV *prio_cv;
2448 static SV *prio_sv; 3217 static SV *prio_sv;
2449 3218
2450 if (expect_false (!prio_cv)) 3219 if (ecb_expect_false (!prio_cv))
2451 { 3220 {
2452 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3221 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2453 prio_sv = newSViv (0); 3222 prio_sv = newSViv (0);
2454 } 3223 }
2455 3224
… …
2474 3243
2475 for (i = 0; i < items; ++i) 3244 for (i = 0; i < items; ++i)
2476 PUSHs (arg [i]); 3245 PUSHs (arg [i]);
2477 3246
2478 /* now push the callback closure */ 3247 /* now push the callback closure */
2479 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3248 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2480 3249
2481 /* now call the AIO function - we assume our request is uncancelable */ 3250 /* now call the AIO function - we assume our request is uncancelable */
2482 PUTBACK; 3251 PUTBACK;
2483 call_sv ((SV *)req, G_VOID | G_DISCARD); 3252 call_sv ((SV *)req, G_VOID | G_DISCARD);
2484 } 3253 }
2485 3254
2486 /* now that the requets is going, we loop toll we have a result */ 3255 /* now that the request is going, we loop till we have a result */
2487 frame->data = (void *)state; 3256 frame->data = (void *)state;
2488 frame->prepare = prepare_schedule; 3257 frame->prepare = prepare_schedule;
2489 frame->check = slf_check_aio_req; 3258 frame->check = slf_check_aio_req;
2490} 3259}
2491 3260
… …
2498 3267
2499 XSRETURN_EMPTY; 3268 XSRETURN_EMPTY;
2500} 3269}
2501 3270
2502/*****************************************************************************/ 3271/*****************************************************************************/
3272
3273#if CORO_CLONE
3274# include "clone.c"
3275#endif
3276
3277/*****************************************************************************/
3278
3279static SV *
3280coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3281{
3282 SV *coro_sv;
3283 struct coro *coro;
3284 MAGIC *mg;
3285 HV *hv;
3286 SV *cb;
3287 int i;
3288
3289 if (argc > 0)
3290 {
3291 cb = s_get_cv_croak (argv [0]);
3292
3293 if (!is_coro)
3294 {
3295 if (CvISXSUB (cb))
3296 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3297
3298 if (!CvROOT (cb))
3299 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3300 }
3301 }
3302
3303 Newz (0, coro, 1, struct coro);
3304 coro->args = newAV ();
3305 coro->flags = CF_NEW;
3306
3307 if (coro_first) coro_first->prev = coro;
3308 coro->next = coro_first;
3309 coro_first = coro;
3310
3311 coro->hv = hv = newHV ();
3312 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3313 mg->mg_flags |= MGf_DUP;
3314 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3315
3316 if (argc > 0)
3317 {
3318 av_extend (coro->args, argc + is_coro - 1);
3319
3320 if (is_coro)
3321 {
3322 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3323 cb = (SV *)cv_coro_run;
3324 }
3325
3326 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3327
3328 for (i = 1; i < argc; i++)
3329 av_push (coro->args, newSVsv (argv [i]));
3330 }
3331
3332 return coro_sv;
3333}
3334
3335#ifndef __cplusplus
3336ecb_cold XS(boot_Coro__State);
3337#endif
3338
3339#if CORO_JIT
3340
3341static void ecb_noinline ecb_cold
3342pushav_3uv (pTHX_ UV a, UV b, UV c)
3343{
3344 dSP;
3345 AV *av = newAV ();
3346
3347 av_store (av, 2, newSVuv (c));
3348 av_store (av, 1, newSVuv (b));
3349 av_store (av, 0, newSVuv (a));
3350
3351 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3352
3353 PUTBACK;
3354}
3355
3356static void ecb_noinline ecb_cold
3357jit_init (pTHX)
3358{
3359 dSP;
3360 SV *load, *save;
3361 char *map_base;
3362 char *load_ptr, *save_ptr;
3363 STRLEN load_len, save_len;
3364 int count;
3365
3366 PUSHMARK (SP);
3367 PUTBACK;
3368#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3369# include "state.h"
3370#undef VARx
3371 count = call_pv ("Coro::State::_jit", G_ARRAY);
3372 SPAGAIN;
3373
3374 save = POPs; save_ptr = SvPVbyte (save, save_len);
3375 load = POPs; load_ptr = SvPVbyte (load, load_len);
3376
3377 map_base = mmap (0, load_len + save_len + 16, PROT_EXEC | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3378
3379 assert (("Coro: unable mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3380
3381 load_perl_slots = (load_save_perl_slots_type)map_base;
3382 memcpy (map_base, load_ptr, load_len);
3383
3384 map_base += (load_len + 15) & ~15;
3385
3386 save_perl_slots = (load_save_perl_slots_type)map_base;
3387 memcpy (map_base, save_ptr, save_len);
3388}
3389
3390#endif
2503 3391
2504MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3392MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2505 3393
2506PROTOTYPES: DISABLE 3394PROTOTYPES: DISABLE
2507 3395
… …
2512 coro_thx = PERL_GET_CONTEXT; 3400 coro_thx = PERL_GET_CONTEXT;
2513# endif 3401# endif
2514#endif 3402#endif
2515 BOOT_PAGESIZE; 3403 BOOT_PAGESIZE;
2516 3404
3405 /* perl defines these to check for existance first, but why it doesn't */
3406 /* just create them one at init time is not clear to me, except for */
3407 /* programs trying to delete them, but... */
3408 /* anyway, we declare this as invalid and make sure they are initialised here */
3409 DEFSV;
3410 ERRSV;
3411
3412 cctx_current = cctx_new_empty ();
3413
2517 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3414 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2518 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3415 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2519 3416
2520 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3417 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2521 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3418 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2540 3437
2541 { 3438 {
2542 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3439 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2543 3440
2544 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3441 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2545 hv_store_ent (PL_custom_op_names, slf, 3442 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2546 newSVpv ("coro_slf", 0), 0);
2547 3443
2548 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3444 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2549 hv_store_ent (PL_custom_op_descs, slf, 3445 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2550 newSVpv ("coro schedule like function", 0), 0);
2551 } 3446 }
2552 3447
2553 coroapi.ver = CORO_API_VERSION; 3448 coroapi.ver = CORO_API_VERSION;
2554 coroapi.rev = CORO_API_REVISION; 3449 coroapi.rev = CORO_API_REVISION;
2555 3450
… …
2560 coroapi.prepare_nop = prepare_nop; 3455 coroapi.prepare_nop = prepare_nop;
2561 coroapi.prepare_schedule = prepare_schedule; 3456 coroapi.prepare_schedule = prepare_schedule;
2562 coroapi.prepare_cede = prepare_cede; 3457 coroapi.prepare_cede = prepare_cede;
2563 coroapi.prepare_cede_notself = prepare_cede_notself; 3458 coroapi.prepare_cede_notself = prepare_cede_notself;
2564 3459
2565 { 3460 time_init (aTHX);
2566 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2567 3461
2568 if (!svp) croak ("Time::HiRes is required");
2569 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2570
2571 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2572 }
2573
2574 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3462 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3463#if CORO_JIT
3464 PUTBACK;
3465 require_pv ("Coro/jit-" CORO_JIT_TYPE ".pl");
3466 jit_init (aTHX);
3467 perl_eval_pv ("undef &Coro::State::_jit", 1);
3468 SPAGAIN;
3469#endif
2575} 3470}
2576 3471
2577SV * 3472SV *
2578new (char *klass, ...) 3473new (SV *klass, ...)
3474 ALIAS:
3475 Coro::new = 1
2579 CODE: 3476 CODE:
2580{ 3477 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2581 struct coro *coro; 3478 OUTPUT:
2582 MAGIC *mg;
2583 HV *hv;
2584 int i;
2585
2586 Newz (0, coro, 1, struct coro);
2587 coro->args = newAV ();
2588 coro->flags = CF_NEW;
2589
2590 if (coro_first) coro_first->prev = coro;
2591 coro->next = coro_first;
2592 coro_first = coro;
2593
2594 coro->hv = hv = newHV ();
2595 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2596 mg->mg_flags |= MGf_DUP;
2597 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2598
2599 av_extend (coro->args, items - 1);
2600 for (i = 1; i < items; i++)
2601 av_push (coro->args, newSVsv (ST (i)));
2602}
2603 OUTPUT:
2604 RETVAL 3479 RETVAL
2605 3480
2606void 3481void
2607transfer (...) 3482transfer (...)
2608 PROTOTYPE: $$ 3483 PROTOTYPE: $$
2609 CODE: 3484 CODE:
2610 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3485 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2611 3486
2612bool
2613_destroy (SV *coro_sv)
2614 CODE:
2615 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2616 OUTPUT:
2617 RETVAL
2618
2619void 3487void
2620_exit (int code) 3488_exit (int code)
2621 PROTOTYPE: $ 3489 PROTOTYPE: $
2622 CODE: 3490 CODE:
2623 _exit (code); 3491 _exit (code);
3492
3493SV *
3494clone (Coro::State coro)
3495 CODE:
3496{
3497#if CORO_CLONE
3498 struct coro *ncoro = coro_clone (aTHX_ coro);
3499 MAGIC *mg;
3500 /* TODO: too much duplication */
3501 ncoro->hv = newHV ();
3502 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3503 mg->mg_flags |= MGf_DUP;
3504 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3505#else
3506 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3507#endif
3508}
3509 OUTPUT:
3510 RETVAL
2624 3511
2625int 3512int
2626cctx_stacksize (int new_stacksize = 0) 3513cctx_stacksize (int new_stacksize = 0)
2627 PROTOTYPE: ;$ 3514 PROTOTYPE: ;$
2628 CODE: 3515 CODE:
… …
2678 eval = 1 3565 eval = 1
2679 CODE: 3566 CODE:
2680{ 3567{
2681 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3568 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2682 { 3569 {
2683 struct coro temp; 3570 struct coro *current = SvSTATE_current;
3571 struct CoroSLF slf_save;
2684 3572
2685 if (!(coro->flags & CF_RUNNING)) 3573 if (current != coro)
2686 { 3574 {
2687 PUTBACK; 3575 PUTBACK;
2688 save_perl (aTHX_ &temp); 3576 save_perl (aTHX_ current);
2689 load_perl (aTHX_ coro); 3577 load_perl (aTHX_ coro);
3578 /* the coro is most likely in an active SLF call.
3579 * while not strictly required (the code we execute is
3580 * not allowed to call any SLF functions), it's cleaner
3581 * to reinitialise the slf_frame and restore it later.
3582 * This might one day allow us to actually do SLF calls
3583 * from code executed here.
3584 */
3585 slf_save = slf_frame;
3586 slf_frame.prepare = 0;
3587 SPAGAIN;
2690 } 3588 }
2691 3589
2692 {
2693 dSP;
2694 ENTER;
2695 SAVETMPS;
2696 PUTBACK;
2697 PUSHSTACK; 3590 PUSHSTACK;
3591
2698 PUSHMARK (SP); 3592 PUSHMARK (SP);
3593 PUTBACK;
2699 3594
2700 if (ix) 3595 if (ix)
2701 eval_sv (coderef, 0); 3596 eval_sv (coderef, 0);
2702 else 3597 else
2703 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3598 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2704 3599
2705 POPSTACK; 3600 POPSTACK;
2706 SPAGAIN; 3601 SPAGAIN;
2707 FREETMPS;
2708 LEAVE;
2709 PUTBACK;
2710 }
2711 3602
2712 if (!(coro->flags & CF_RUNNING)) 3603 if (current != coro)
2713 { 3604 {
3605 PUTBACK;
3606 slf_frame = slf_save;
2714 save_perl (aTHX_ coro); 3607 save_perl (aTHX_ coro);
2715 load_perl (aTHX_ &temp); 3608 load_perl (aTHX_ current);
2716 SPAGAIN; 3609 SPAGAIN;
2717 } 3610 }
2718 } 3611 }
2719} 3612}
2720 3613
… …
2723 PROTOTYPE: $ 3616 PROTOTYPE: $
2724 ALIAS: 3617 ALIAS:
2725 is_ready = CF_READY 3618 is_ready = CF_READY
2726 is_running = CF_RUNNING 3619 is_running = CF_RUNNING
2727 is_new = CF_NEW 3620 is_new = CF_NEW
2728 is_destroyed = CF_DESTROYED 3621 is_destroyed = CF_ZOMBIE
3622 is_zombie = CF_ZOMBIE
3623 is_suspended = CF_SUSPENDED
2729 CODE: 3624 CODE:
2730 RETVAL = boolSV (coro->flags & ix); 3625 RETVAL = boolSV (coro->flags & ix);
2731 OUTPUT: 3626 OUTPUT:
2732 RETVAL 3627 RETVAL
2733 3628
2734void 3629void
2735throw (Coro::State self, SV *throw = &PL_sv_undef) 3630throw (Coro::State self, SV *exception = &PL_sv_undef)
2736 PROTOTYPE: $;$ 3631 PROTOTYPE: $;$
2737 CODE: 3632 CODE:
2738{ 3633{
2739 struct coro *current = SvSTATE_current; 3634 struct coro *current = SvSTATE_current;
2740 SV **throwp = self == current ? &CORO_THROW : &self->except; 3635 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2741 SvREFCNT_dec (*throwp); 3636 SvREFCNT_dec (*exceptionp);
2742 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3637 SvGETMAGIC (exception);
3638 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2743} 3639}
2744 3640
2745void 3641void
2746api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3642api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2747 PROTOTYPE: $;$ 3643 PROTOTYPE: $;$
… …
2749 3645
2750SV * 3646SV *
2751has_cctx (Coro::State coro) 3647has_cctx (Coro::State coro)
2752 PROTOTYPE: $ 3648 PROTOTYPE: $
2753 CODE: 3649 CODE:
2754 RETVAL = boolSV (!!coro->cctx); 3650 /* maybe manage the running flag differently */
3651 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2755 OUTPUT: 3652 OUTPUT:
2756 RETVAL 3653 RETVAL
2757 3654
2758int 3655int
2759is_traced (Coro::State coro) 3656is_traced (Coro::State coro)
… …
2779 3676
2780void 3677void
2781force_cctx () 3678force_cctx ()
2782 PROTOTYPE: 3679 PROTOTYPE:
2783 CODE: 3680 CODE:
2784 SvSTATE_current->cctx->idle_sp = 0; 3681 cctx_current->idle_sp = 0;
2785 3682
2786void 3683void
2787swap_defsv (Coro::State self) 3684swap_defsv (Coro::State self)
2788 PROTOTYPE: $ 3685 PROTOTYPE: $
2789 ALIAS: 3686 ALIAS:
… …
2797 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3694 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2798 3695
2799 SV *tmp = *src; *src = *dst; *dst = tmp; 3696 SV *tmp = *src; *src = *dst; *dst = tmp;
2800 } 3697 }
2801 3698
3699void
3700cancel (Coro::State self)
3701 CODE:
3702 coro_state_destroy (aTHX_ self);
3703
3704SV *
3705enable_times (int enabled = enable_times)
3706 CODE:
3707{
3708 RETVAL = boolSV (enable_times);
3709
3710 if (enabled != enable_times)
3711 {
3712 enable_times = enabled;
3713
3714 coro_times_update ();
3715 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3716 }
3717}
3718 OUTPUT:
3719 RETVAL
3720
3721void
3722times (Coro::State self)
3723 PPCODE:
3724{
3725 struct coro *current = SvSTATE (coro_current);
3726
3727 if (ecb_expect_false (current == self))
3728 {
3729 coro_times_update ();
3730 coro_times_add (SvSTATE (coro_current));
3731 }
3732
3733 EXTEND (SP, 2);
3734 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3735 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3736
3737 if (ecb_expect_false (current == self))
3738 coro_times_sub (SvSTATE (coro_current));
3739}
3740
3741void
3742swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3743 CODE:
3744{
3745 struct coro *current = SvSTATE_current;
3746
3747 if (current == coro)
3748 SWAP_SVS (current);
3749
3750 if (!coro->swap_sv)
3751 coro->swap_sv = newAV ();
3752
3753 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3754 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3755
3756 if (current == coro)
3757 SWAP_SVS (current);
3758}
3759
2802 3760
2803MODULE = Coro::State PACKAGE = Coro 3761MODULE = Coro::State PACKAGE = Coro
2804 3762
2805BOOT: 3763BOOT:
2806{ 3764{
2807 int i;
2808
2809 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3765 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3766 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2812 3767 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2813 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3768 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2814 SvREADONLY_on (coro_current); 3769 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3770 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3771 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3772 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2815 3773
3774 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3775 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3776 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3777 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3778
2816 coro_stash = gv_stashpv ("Coro", TRUE); 3779 coro_stash = gv_stashpv ("Coro", TRUE);
2817 3780
2818 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3781 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2819 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3782 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2820 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3783 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2821 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3784 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2822 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3785 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2823 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3786 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2824
2825 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2826 coro_ready[i] = newAV ();
2827 3787
2828 { 3788 {
2829 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3789 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2830 3790
2831 coroapi.schedule = api_schedule; 3791 coroapi.schedule = api_schedule;
3792 coroapi.schedule_to = api_schedule_to;
2832 coroapi.cede = api_cede; 3793 coroapi.cede = api_cede;
2833 coroapi.cede_notself = api_cede_notself; 3794 coroapi.cede_notself = api_cede_notself;
2834 coroapi.ready = api_ready; 3795 coroapi.ready = api_ready;
2835 coroapi.is_ready = api_is_ready; 3796 coroapi.is_ready = api_is_ready;
2836 coroapi.nready = coro_nready; 3797 coroapi.nready = coro_nready;
… …
2840 sv_setiv (sv, (IV)&coroapi); 3801 sv_setiv (sv, (IV)&coroapi);
2841 SvREADONLY_on (sv); 3802 SvREADONLY_on (sv);
2842 } 3803 }
2843} 3804}
2844 3805
3806SV *
3807async (...)
3808 PROTOTYPE: &@
3809 CODE:
3810 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3811 api_ready (aTHX_ RETVAL);
3812 OUTPUT:
3813 RETVAL
3814
3815void
3816_destroy (Coro::State coro)
3817 CODE:
3818 /* used by the manager thread */
3819 coro_state_destroy (aTHX_ coro);
3820
3821void
3822on_destroy (Coro::State coro, SV *cb)
3823 CODE:
3824 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3825
3826void
3827join (...)
3828 CODE:
3829 CORO_EXECUTE_SLF_XS (slf_init_join);
3830
3831void
3832terminate (...)
3833 CODE:
3834 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3835
3836void
3837cancel (...)
3838 CODE:
3839 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3840
3841int
3842safe_cancel (Coro::State self, ...)
3843 C_ARGS: aTHX_ self, &ST (1), items - 1
3844
2845void 3845void
2846schedule (...) 3846schedule (...)
2847 CODE: 3847 CODE:
2848 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3848 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3849
3850void
3851schedule_to (...)
3852 CODE:
3853 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3854
3855void
3856cede_to (...)
3857 CODE:
3858 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2849 3859
2850void 3860void
2851cede (...) 3861cede (...)
2852 CODE: 3862 CODE:
2853 CORO_EXECUTE_SLF_XS (slf_init_cede); 3863 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2867void 3877void
2868_set_readyhook (SV *hook) 3878_set_readyhook (SV *hook)
2869 PROTOTYPE: $ 3879 PROTOTYPE: $
2870 CODE: 3880 CODE:
2871 SvREFCNT_dec (coro_readyhook); 3881 SvREFCNT_dec (coro_readyhook);
3882 SvGETMAGIC (hook);
3883 if (SvOK (hook))
3884 {
2872 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3885 coro_readyhook = newSVsv (hook);
3886 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3887 }
3888 else
3889 {
3890 coro_readyhook = 0;
3891 CORO_READYHOOK = 0;
3892 }
2873 3893
2874int 3894int
2875prio (Coro::State coro, int newprio = 0) 3895prio (Coro::State coro, int newprio = 0)
2876 PROTOTYPE: $;$ 3896 PROTOTYPE: $;$
2877 ALIAS: 3897 ALIAS:
… …
2883 if (items > 1) 3903 if (items > 1)
2884 { 3904 {
2885 if (ix) 3905 if (ix)
2886 newprio = coro->prio - newprio; 3906 newprio = coro->prio - newprio;
2887 3907
2888 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3908 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2889 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3909 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2890 3910
2891 coro->prio = newprio; 3911 coro->prio = newprio;
2892 } 3912 }
2893} 3913}
2894 OUTPUT: 3914 OUTPUT:
… …
2908 CODE: 3928 CODE:
2909 RETVAL = coro_nready; 3929 RETVAL = coro_nready;
2910 OUTPUT: 3930 OUTPUT:
2911 RETVAL 3931 RETVAL
2912 3932
2913# for async_pool speedup
2914void 3933void
2915_pool_1 (SV *cb) 3934suspend (Coro::State self)
3935 PROTOTYPE: $
2916 CODE: 3936 CODE:
2917{ 3937 self->flags |= CF_SUSPENDED;
2918 HV *hv = (HV *)SvRV (coro_current);
2919 struct coro *coro = SvSTATE_hv ((SV *)hv);
2920 AV *defav = GvAV (PL_defgv);
2921 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2922 AV *invoke_av;
2923 int i, len;
2924 3938
2925 if (!invoke) 3939void
3940resume (Coro::State self)
3941 PROTOTYPE: $
3942 CODE:
3943 self->flags &= ~CF_SUSPENDED;
3944
3945void
3946_pool_handler (...)
3947 CODE:
3948 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3949
3950void
3951async_pool (SV *cv, ...)
3952 PROTOTYPE: &@
3953 PPCODE:
3954{
3955 HV *hv = (HV *)av_pop (av_async_pool);
3956 AV *av = newAV ();
3957 SV *cb = ST (0);
3958 int i;
3959
3960 av_extend (av, items - 2);
3961 for (i = 1; i < items; ++i)
3962 av_push (av, SvREFCNT_inc_NN (ST (i)));
3963
3964 if ((SV *)hv == &PL_sv_undef)
2926 { 3965 {
2927 SV *old = PL_diehook; 3966 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2928 PL_diehook = 0; 3967 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2929 SvREFCNT_dec (old); 3968 SvREFCNT_dec (sv);
2930 croak ("\3async_pool terminate\2\n");
2931 } 3969 }
2932 3970
2933 SvREFCNT_dec (coro->saved_deffh);
2934 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2935
2936 hv_store (hv, "desc", sizeof ("desc") - 1,
2937 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2938
2939 invoke_av = (AV *)SvRV (invoke);
2940 len = av_len (invoke_av);
2941
2942 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2943
2944 if (len > 0)
2945 { 3971 {
2946 av_fill (defav, len - 1); 3972 struct coro *coro = SvSTATE_hv (hv);
2947 for (i = 0; i < len; ++i) 3973
2948 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3974 assert (!coro->invoke_cb);
3975 assert (!coro->invoke_av);
3976 coro->invoke_cb = SvREFCNT_inc (cb);
3977 coro->invoke_av = av;
2949 } 3978 }
2950}
2951 3979
2952void 3980 api_ready (aTHX_ (SV *)hv);
2953_pool_2 (SV *cb)
2954 CODE:
2955{
2956 HV *hv = (HV *)SvRV (coro_current);
2957 struct coro *coro = SvSTATE_hv ((SV *)hv);
2958 3981
2959 sv_setsv (cb, &PL_sv_undef); 3982 if (GIMME_V != G_VOID)
2960 3983 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
2961 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3984 else
2962 coro->saved_deffh = 0;
2963
2964 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2965 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2966 {
2967 SV *old = PL_diehook;
2968 PL_diehook = 0;
2969 SvREFCNT_dec (old); 3985 SvREFCNT_dec (hv);
2970 croak ("\3async_pool terminate\2\n");
2971 }
2972
2973 av_clear (GvAV (PL_defgv));
2974 hv_store (hv, "desc", sizeof ("desc") - 1,
2975 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2976
2977 coro->prio = 0;
2978
2979 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2980 api_trace (aTHX_ coro_current, 0);
2981
2982 av_push (av_async_pool, newSVsv (coro_current));
2983} 3986}
2984 3987
2985SV * 3988SV *
2986rouse_cb () 3989rouse_cb ()
2987 PROTOTYPE: 3990 PROTOTYPE:
… …
2989 RETVAL = coro_new_rouse_cb (aTHX); 3992 RETVAL = coro_new_rouse_cb (aTHX);
2990 OUTPUT: 3993 OUTPUT:
2991 RETVAL 3994 RETVAL
2992 3995
2993void 3996void
2994rouse_wait (SV *cb = 0) 3997rouse_wait (...)
2995 PROTOTYPE: ;$ 3998 PROTOTYPE: ;$
2996 PPCODE: 3999 PPCODE:
2997 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4000 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2998 4001
4002void
4003on_enter (SV *block)
4004 ALIAS:
4005 on_leave = 1
4006 PROTOTYPE: &
4007 CODE:
4008{
4009 struct coro *coro = SvSTATE_current;
4010 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4011
4012 block = s_get_cv_croak (block);
4013
4014 if (!*avp)
4015 *avp = newAV ();
4016
4017 av_push (*avp, SvREFCNT_inc (block));
4018
4019 if (!ix)
4020 on_enterleave_call (aTHX_ block);
4021
4022 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4023 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4024 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4025}
4026
2999 4027
3000MODULE = Coro::State PACKAGE = PerlIO::cede 4028MODULE = Coro::State PACKAGE = PerlIO::cede
3001 4029
3002BOOT: 4030BOOT:
3003 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4031 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3006MODULE = Coro::State PACKAGE = Coro::Semaphore 4034MODULE = Coro::State PACKAGE = Coro::Semaphore
3007 4035
3008SV * 4036SV *
3009new (SV *klass, SV *count = 0) 4037new (SV *klass, SV *count = 0)
3010 CODE: 4038 CODE:
4039{
4040 int semcnt = 1;
4041
4042 if (count)
4043 {
4044 SvGETMAGIC (count);
4045
4046 if (SvOK (count))
4047 semcnt = SvIV (count);
4048 }
4049
3011 RETVAL = sv_bless ( 4050 RETVAL = sv_bless (
3012 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4051 coro_waitarray_new (aTHX_ semcnt),
3013 GvSTASH (CvGV (cv)) 4052 GvSTASH (CvGV (cv))
3014 ); 4053 );
4054}
3015 OUTPUT: 4055 OUTPUT:
3016 RETVAL 4056 RETVAL
3017 4057
3018# helper for Coro::Channel 4058# helper for Coro::Channel and others
3019SV * 4059SV *
3020_alloc (int count) 4060_alloc (int count)
3021 CODE: 4061 CODE:
3022 RETVAL = coro_waitarray_new (aTHX_ count); 4062 RETVAL = coro_waitarray_new (aTHX_ count);
3023 OUTPUT: 4063 OUTPUT:
… …
3036 adjust = 1 4076 adjust = 1
3037 CODE: 4077 CODE:
3038 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4078 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3039 4079
3040void 4080void
3041down (SV *self) 4081down (...)
3042 CODE: 4082 CODE:
3043 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4083 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3044 4084
3045void 4085void
3046wait (SV *self) 4086wait (...)
3047 CODE: 4087 CODE:
3048 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 4088 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3049 4089
3050void 4090void
3051try (SV *self) 4091try (SV *self)
… …
3081 for (i = 1; i <= wcount; ++i) 4121 for (i = 1; i <= wcount; ++i)
3082 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4122 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3083 } 4123 }
3084} 4124}
3085 4125
4126MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4127
4128void
4129_may_delete (SV *sem, int count, int extra_refs)
4130 PPCODE:
4131{
4132 AV *av = (AV *)SvRV (sem);
4133
4134 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4135 && AvFILLp (av) == 0 /* no waiters, just count */
4136 && SvIV (AvARRAY (av)[0]) == count)
4137 XSRETURN_YES;
4138
4139 XSRETURN_NO;
4140}
4141
3086MODULE = Coro::State PACKAGE = Coro::Signal 4142MODULE = Coro::State PACKAGE = Coro::Signal
3087 4143
3088SV * 4144SV *
3089new (SV *klass) 4145new (SV *klass)
3090 CODE: 4146 CODE:
… …
3094 ); 4150 );
3095 OUTPUT: 4151 OUTPUT:
3096 RETVAL 4152 RETVAL
3097 4153
3098void 4154void
3099wait (SV *self) 4155wait (...)
3100 CODE: 4156 CODE:
3101 CORO_EXECUTE_SLF_XS (slf_init_signal_wait); 4157 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3102 4158
3103void 4159void
3104broadcast (SV *self) 4160broadcast (SV *self)
… …
3161 4217
3162void 4218void
3163_register (char *target, char *proto, SV *req) 4219_register (char *target, char *proto, SV *req)
3164 CODE: 4220 CODE:
3165{ 4221{
3166 HV *st; 4222 SV *req_cv = s_get_cv_croak (req);
3167 GV *gvp;
3168 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3169 /* newXSproto doesn't return the CV on 5.8 */ 4223 /* newXSproto doesn't return the CV on 5.8 */
3170 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4224 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3171 sv_setpv ((SV *)slf_cv, proto); 4225 sv_setpv ((SV *)slf_cv, proto);
3172 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4226 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3173} 4227}
3174 4228
4229MODULE = Coro::State PACKAGE = Coro::Select
4230
4231void
4232patch_pp_sselect ()
4233 CODE:
4234 if (!coro_old_pp_sselect)
4235 {
4236 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4237 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4238 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4239 }
4240
4241void
4242unpatch_pp_sselect ()
4243 CODE:
4244 if (coro_old_pp_sselect)
4245 {
4246 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4247 coro_old_pp_sselect = 0;
4248 }
4249

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