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Comparing Coro/Coro/State.xs (file contents):
Revision 1.294 by root, Tue Nov 18 08:31:03 2008 UTC vs.
Revision 1.415 by root, Tue Aug 30 07:48:53 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, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#if HAVE_MMAP
27# include <unistd.h> 39# include <unistd.h>
28# include <sys/mman.h> 40# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 42# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
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) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
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 70#endif
108 71
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
111#endif 74#endif
… …
127#else 90#else
128# define dSTACKLEVEL volatile void *stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 92# define STACKLEVEL ((void *)&stacklevel)
130#endif 93#endif
131 94
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#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 96
149#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
150 99
151#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
152# if CORO_PTHREAD 101# if CORO_PTHREAD
153static void *coro_thx; 102static void *coro_thx;
154# endif 103# endif
155#endif 104#endif
156 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
157static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
158 121
159/* we hijack an hopefully unused CV flag for our purposes */ 122/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000 123#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX); 124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
162 126
163static U32 cctx_gen; 127static U32 cctx_gen;
164static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
165static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
166static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
167static JMPENV *main_top_env; 131static JMPENV *main_top_env;
168static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
170 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
171static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
172static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
173static SV *rv_diehook; 141static SV *rv_diehook;
174static SV *rv_warnhook; 142static SV *rv_warnhook;
175static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
176 144
177/* async_pool helper stuff */ 145/* async_pool helper stuff */
178static SV *sv_pool_rss; 146static SV *sv_pool_rss;
179static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
180static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
181 152
182/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
183static SV *sv_activity; 154static SV *sv_activity;
184 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
185static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
186static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
187 164
188enum { 165enum
166{
189 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
190 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
191 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
192 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
193 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
214 int valgrind_id; 192 int valgrind_id;
215#endif 193#endif
216 unsigned char flags; 194 unsigned char flags;
217} coro_cctx; 195} coro_cctx;
218 196
197static coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
201static MGVTBL coro_state_vtbl;
202
219enum { 203enum
204{
220 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
221 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
222 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
210 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
224}; 211};
225 212
226/* the structure where most of the perl state is stored, overlaid on the cxstack */ 213/* the structure where most of the perl state is stored, overlaid on the cxstack */
227typedef struct 214typedef struct
228{ 215{
229 SV *defsv;
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name; 216#define VARx(name,expr,type) type name;
234# include "state.h" 217# include "state.h"
235#undef VAR 218#undef VARx
236} perl_slots; 219} perl_slots;
237 220
221/* how many context stack entries do we need for perl_slots */
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 223
240/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
241struct coro { 225struct coro
226{
242 /* the C coroutine allocated to this perl coroutine, if any */ 227 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 228 coro_cctx *cctx;
229
230 /* ready queue */
231 struct coro *next_ready;
244 232
245 /* state data */ 233 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */ 234 struct CoroSLF slf_frame; /* saved slf frame */
247 AV *mainstack; 235 AV *mainstack;
248 perl_slots *slot; /* basically the saved sp */ 236 perl_slots *slot; /* basically the saved sp */
249 237
238 CV *startcv; /* the CV to execute */
250 AV *args; /* data associated with this coroutine (initial args) */ 239 AV *args; /* data associated with this coroutine (initial args) */
251 int refcnt; /* coroutines are refcounted, yes */
252 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
253 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
255 242
256 /* statistics */ 243 /* statistics */
257 int usecount; /* number of transfers to this coro */ 244 int usecount; /* number of transfers to this coro */
258 245
259 /* coro process data */ 246 /* coro process data */
260 int prio; 247 int prio;
261 SV *throw; /* exception to be thrown */ 248 SV *except; /* exception to be thrown */
249 SV *rouse_cb; /* last rouse callback */
250 AV *on_destroy; /* callbacks or coros to notify on destroy */
251 AV *status; /* the exit status list */
262 252
263 /* async_pool */ 253 /* async_pool */
264 SV *saved_deffh; 254 SV *saved_deffh;
255 SV *invoke_cb;
256 AV *invoke_av;
257
258 /* on_enter/on_leave */
259 AV *on_enter;
260 AV *on_leave;
261
262 /* swap_sv */
263 AV *swap_sv;
264
265 /* times */
266 coro_ts t_cpu, t_real;
265 267
266 /* linked list */ 268 /* linked list */
267 struct coro *next, *prev; 269 struct coro *next, *prev;
268}; 270};
269 271
270typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
272 274
273/* the following variables are effectively part of the perl context */ 275/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */ 276/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */ 277/* the main reason we don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */ 278static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
278 279
279/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
280 281
281#define PRIO_MAX 3 282#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 283#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 284#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 285#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 286#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 287#define CORO_PRIO_MIN -4
287 288
288/* for Coro.pm */ 289/* for Coro.pm */
289static SV *coro_current; 290static SV *coro_current;
290static SV *coro_readyhook; 291static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
293static CV *cv_coro_run;
292static struct coro *coro_first; 294static struct coro *coro_first;
293#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
294 296
297/** JIT *********************************************************************/
298
299#if CORO_JIT
300 /* APPLE doesn't have HAVE_MMAP though */
301 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
302 #ifndef CORO_JIT_TYPE
303 #if __x86_64 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "amd64-unix"
305 #elif __i386 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "x86-unix"
307 #endif
308 #endif
309#endif
310
311#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
312 #undef CORO_JIT
313#endif
314
315#if CORO_JIT
316 typedef void (*load_save_perl_slots_type)(perl_slots *);
317 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
318#endif
319
320/** Coro::Select ************************************************************/
321
322static OP *(*coro_old_pp_sselect) (pTHX);
323static SV *coro_select_select;
324
325/* horrible hack, but if it works... */
326static OP *
327coro_pp_sselect (pTHX)
328{
329 dSP;
330 PUSHMARK (SP - 4); /* fake argument list */
331 XPUSHs (coro_select_select);
332 PUTBACK;
333
334 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
335 PL_op->op_flags |= OPf_STACKED;
336 PL_op->op_private = 0;
337 return PL_ppaddr [OP_ENTERSUB](aTHX);
338}
339
340/** time stuff **************************************************************/
341
342#ifdef HAS_GETTIMEOFDAY
343
344ecb_inline void
345coro_u2time (pTHX_ UV ret[2])
346{
347 struct timeval tv;
348 gettimeofday (&tv, 0);
349
350 ret [0] = tv.tv_sec;
351 ret [1] = tv.tv_usec;
352}
353
354ecb_inline double
355coro_nvtime (void)
356{
357 struct timeval tv;
358 gettimeofday (&tv, 0);
359
360 return tv.tv_sec + tv.tv_usec * 1e-6;
361}
362
363ecb_inline void
364time_init (pTHX)
365{
366 nvtime = coro_nvtime;
367 u2time = coro_u2time;
368}
369
370#else
371
372ecb_inline void
373time_init (pTHX)
374{
375 SV **svp;
376
377 require_pv ("Time/HiRes.pm");
378
379 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
380
381 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
382 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
383
384 nvtime = INT2PTR (double (*)(), SvIV (*svp));
385
386 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
387 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
388}
389
390#endif
391
295/** lowlevel stuff **********************************************************/ 392/** lowlevel stuff **********************************************************/
296 393
297static SV * 394static SV * ecb_noinline
298coro_get_sv (pTHX_ const char *name, int create) 395coro_get_sv (pTHX_ const char *name, int create)
299{ 396{
300#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
301 /* 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 */
302 get_sv (name, create); 399 get_sv (name, create);
303#endif 400#endif
304 return get_sv (name, create); 401 return get_sv (name, create);
305} 402}
306 403
307static AV * 404static AV * ecb_noinline
308coro_get_av (pTHX_ const char *name, int create) 405coro_get_av (pTHX_ const char *name, int create)
309{ 406{
310#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
311 /* 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 */
312 get_av (name, create); 409 get_av (name, create);
313#endif 410#endif
314 return get_av (name, create); 411 return get_av (name, create);
315} 412}
316 413
317static HV * 414static HV * ecb_noinline
318coro_get_hv (pTHX_ const char *name, int create) 415coro_get_hv (pTHX_ const char *name, int create)
319{ 416{
320#if PERL_VERSION_ATLEAST (5,10,0) 417#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 418 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_hv (name, create); 419 get_hv (name, create);
323#endif 420#endif
324 return get_hv (name, create); 421 return get_hv (name, create);
325} 422}
326 423
327static AV * 424ecb_inline void
425coro_times_update (void)
426{
427#ifdef coro_clock_gettime
428 struct timespec ts;
429
430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
432 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
433
434 ts.tv_sec = ts.tv_nsec = 0;
435 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
436 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
437#else
438 dTHX;
439 UV tv[2];
440
441 u2time (aTHX_ tv);
442 time_real [0] = tv [0];
443 time_real [1] = tv [1] * 1000;
444#endif
445}
446
447ecb_inline void
448coro_times_add (struct coro *c)
449{
450 c->t_real [1] += time_real [1];
451 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
452 c->t_real [0] += time_real [0];
453
454 c->t_cpu [1] += time_cpu [1];
455 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
456 c->t_cpu [0] += time_cpu [0];
457}
458
459ecb_inline void
460coro_times_sub (struct coro *c)
461{
462 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
463 c->t_real [1] -= time_real [1];
464 c->t_real [0] -= time_real [0];
465
466 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
467 c->t_cpu [1] -= time_cpu [1];
468 c->t_cpu [0] -= time_cpu [0];
469}
470
471/*****************************************************************************/
472/* magic glue */
473
474#define CORO_MAGIC_type_cv 26
475#define CORO_MAGIC_type_state PERL_MAGIC_ext
476
477#define CORO_MAGIC_NN(sv, type) \
478 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
479 ? SvMAGIC (sv) \
480 : mg_find (sv, type))
481
482#define CORO_MAGIC(sv, type) \
483 (ecb_expect_true (SvMAGIC (sv)) \
484 ? CORO_MAGIC_NN (sv, type) \
485 : 0)
486
487#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
488#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
489
490ecb_inline MAGIC *
491SvSTATEhv_p (pTHX_ SV *coro)
492{
493 MAGIC *mg;
494
495 if (ecb_expect_true (
496 SvTYPE (coro) == SVt_PVHV
497 && (mg = CORO_MAGIC_state (coro))
498 && mg->mg_virtual == &coro_state_vtbl
499 ))
500 return mg;
501
502 return 0;
503}
504
505ecb_inline struct coro *
506SvSTATE_ (pTHX_ SV *coro)
507{
508 MAGIC *mg;
509
510 if (SvROK (coro))
511 coro = SvRV (coro);
512
513 mg = SvSTATEhv_p (aTHX_ coro);
514 if (!mg)
515 croak ("Coro::State object required");
516
517 return (struct coro *)mg->mg_ptr;
518}
519
520#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
521
522/* faster than SvSTATE, but expects a coroutine hv */
523#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
524#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
525
526/*****************************************************************************/
527/* padlist management and caching */
528
529ecb_inline AV *
328coro_clone_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
329{ 531{
330 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
332 534
333 newpadlist = newAV (); 535 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 540 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 541#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 542 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 543 --AvFILLp (padlist);
342 544
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 545 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
345 547
346 return newpadlist; 548 return newpadlist;
347} 549}
348 550
349static void 551ecb_inline void
350free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
351{ 553{
352 /* may be during global destruction */ 554 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 555 if (!IN_DESTRUCT)
354 { 556 {
355 I32 i = AvFILLp (padlist); 557 I32 i = AvFILLp (padlist);
356 while (i >= 0) 558
559 while (i > 0) /* special-case index 0 */
357 { 560 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 561 /* we try to be extra-careful here */
359 if (svp) 562 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 563 I32 j = AvFILLp (av);
361 SV *sv; 564
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 565 while (j >= 0)
566 SvREFCNT_dec (AvARRAY (av)[j--]);
567
568 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 569 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 570 }
368 571
572 SvREFCNT_dec (AvARRAY (padlist)[0]);
573
574 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 575 SvREFCNT_dec ((SV*)padlist);
370 } 576 }
371} 577}
372 578
373static int 579static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 580coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 581{
376 AV *padlist; 582 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 583 AV *av = (AV *)mg->mg_obj;
584
585 /* perl manages to free our internal AV and _then_ call us */
586 if (IN_DESTRUCT)
587 return 0;
378 588
379 /* casting is fun. */ 589 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 590 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 591 free_padlist (aTHX_ padlist);
382 592
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 593 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 594
385 return 0; 595 return 0;
386} 596}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 597
391static MGVTBL coro_cv_vtbl = { 598static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 599 0, 0, 0, 0,
393 coro_cv_free 600 coro_cv_free
394}; 601};
395 602
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
439/* the next two functions merely cache the padlists */ 603/* the next two functions merely cache the padlists */
440static void 604ecb_inline void
441get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
442{ 606{
443 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
444 AV *av; 608 AV *av;
445 609
446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 610 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 611 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
448 else 612 else
449 { 613 {
450#if CORO_PREFER_PERL_FUNCTIONS 614#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 615 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 616 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 617 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 618 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 619 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 620 SvREFCNT_dec (cp);
457#else 621#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 623#endif
460 } 624 }
461} 625}
462 626
463static void 627ecb_inline void
464put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
465{ 629{
466 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
467 AV *av; 631 AV *av;
468 632
469 if (expect_false (!mg)) 633 if (ecb_expect_false (!mg))
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 634 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 635
472 av = (AV *)mg->mg_obj; 636 av = (AV *)mg->mg_obj;
473 637
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 638 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 639 av_extend (av, AvFILLp (av) + 1);
476 640
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 642}
479 643
480/** load & save, init *******************************************************/ 644/** load & save, init *******************************************************/
645
646/* swap sv heads, at least logically */
647static void
648swap_svs (pTHX_ Coro__State c)
649{
650 int i;
651
652 for (i = 0; i <= AvFILLp (c->swap_sv); )
653 {
654 SV *a = AvARRAY (c->swap_sv)[i++];
655 SV *b = AvARRAY (c->swap_sv)[i++];
656
657 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
658 SV tmp;
659
660 /* swap sv_any */
661 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
662
663 /* swap sv_flags */
664 SvFLAGS (&tmp) = SvFLAGS (a);
665 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
666 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
667
668#if PERL_VERSION_ATLEAST (5,10,0)
669 /* perl 5.10 complicates this _quite_ a bit, but it also is
670 * much faster, so no quarrels here. alternatively, we could
671 * sv_upgrade to avoid this.
672 */
673 {
674 /* swap sv_u */
675 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
676
677 /* if SvANY points to the head, we need to adjust the pointers,
678 * as the pointer for a still points to b, and maybe vice versa.
679 */
680 #define svany_in_head(type) \
681 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
682
683 if (svany_in_head (SvTYPE (a)))
684 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
685
686 if (svany_in_head (SvTYPE (b)))
687 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
688 }
689#endif
690 }
691}
692
693#define SWAP_SVS(coro) \
694 if (ecb_expect_false ((coro)->swap_sv)) \
695 swap_svs (aTHX_ (coro))
696
697static void
698on_enterleave_call (pTHX_ SV *cb);
481 699
482static void 700static void
483load_perl (pTHX_ Coro__State c) 701load_perl (pTHX_ Coro__State c)
484{ 702{
485 perl_slots *slot = c->slot; 703 perl_slots *slot = c->slot;
486 c->slot = 0; 704 c->slot = 0;
487 705
488 PL_mainstack = c->mainstack; 706 PL_mainstack = c->mainstack;
489 707
490 GvSV (PL_defgv) = slot->defsv; 708#if CORO_JIT
491 GvAV (PL_defgv) = slot->defav; 709 load_perl_slots (slot);
492 GvSV (PL_errgv) = slot->errsv; 710#else
493 GvSV (irsgv) = slot->irsgv;
494
495 #define VAR(name,type) PL_ ## name = slot->name; 711 #define VARx(name,expr,type) expr = slot->name;
496 # include "state.h" 712 # include "state.h"
497 #undef VAR 713 #undef VARx
714#endif
498 715
499 { 716 {
500 dSP; 717 dSP;
501 718
502 CV *cv; 719 CV *cv;
503 720
504 /* now do the ugly restore mess */ 721 /* now do the ugly restore mess */
505 while (expect_true (cv = (CV *)POPs)) 722 while (ecb_expect_true (cv = (CV *)POPs))
506 { 723 {
507 put_padlist (aTHX_ cv); /* mark this padlist as available */ 724 put_padlist (aTHX_ cv); /* mark this padlist as available */
508 CvDEPTH (cv) = PTR2IV (POPs); 725 CvDEPTH (cv) = PTR2IV (POPs);
509 CvPADLIST (cv) = (AV *)POPs; 726 CvPADLIST (cv) = (AV *)POPs;
510 } 727 }
511 728
512 PUTBACK; 729 PUTBACK;
513 } 730 }
514 731
515 slf_frame = c->slf_frame; 732 slf_frame = c->slf_frame;
516 coro_throw = c->throw; 733 CORO_THROW = c->except;
734
735 if (ecb_expect_false (enable_times))
736 {
737 if (ecb_expect_false (!times_valid))
738 coro_times_update ();
739
740 coro_times_sub (c);
741 }
742
743 if (ecb_expect_false (c->on_enter))
744 {
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
748 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
749 }
750
751 SWAP_SVS (c);
517} 752}
518 753
519static void 754static void
520save_perl (pTHX_ Coro__State c) 755save_perl (pTHX_ Coro__State c)
521{ 756{
522 c->throw = coro_throw; 757 SWAP_SVS (c);
758
759 if (ecb_expect_false (c->on_leave))
760 {
761 int i;
762
763 for (i = AvFILLp (c->on_leave); i >= 0; --i)
764 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
765 }
766
767 times_valid = 0;
768
769 if (ecb_expect_false (enable_times))
770 {
771 coro_times_update (); times_valid = 1;
772 coro_times_add (c);
773 }
774
775 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 776 c->slf_frame = slf_frame;
524 777
525 { 778 {
526 dSP; 779 dSP;
527 I32 cxix = cxstack_ix; 780 I32 cxix = cxstack_ix;
… …
535 788
536 XPUSHs (Nullsv); 789 XPUSHs (Nullsv);
537 /* this loop was inspired by pp_caller */ 790 /* this loop was inspired by pp_caller */
538 for (;;) 791 for (;;)
539 { 792 {
540 while (expect_true (cxix >= 0)) 793 while (ecb_expect_true (cxix >= 0))
541 { 794 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 795 PERL_CONTEXT *cx = &ccstk[cxix--];
543 796
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 797 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 798 {
546 CV *cv = cx->blk_sub.cv; 799 CV *cv = cx->blk_sub.cv;
547 800
548 if (expect_true (CvDEPTH (cv))) 801 if (ecb_expect_true (CvDEPTH (cv)))
549 { 802 {
550 EXTEND (SP, 3); 803 EXTEND (SP, 3);
551 PUSHs ((SV *)CvPADLIST (cv)); 804 PUSHs ((SV *)CvPADLIST (cv));
552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 805 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
553 PUSHs ((SV *)cv); 806 PUSHs ((SV *)cv);
… …
556 get_padlist (aTHX_ cv); 809 get_padlist (aTHX_ cv);
557 } 810 }
558 } 811 }
559 } 812 }
560 813
561 if (expect_true (top_si->si_type == PERLSI_MAIN)) 814 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
562 break; 815 break;
563 816
564 top_si = top_si->si_prev; 817 top_si = top_si->si_prev;
565 ccstk = top_si->si_cxstack; 818 ccstk = top_si->si_cxstack;
566 cxix = top_si->si_cxix; 819 cxix = top_si->si_cxix;
… …
568 821
569 PUTBACK; 822 PUTBACK;
570 } 823 }
571 824
572 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */ 826 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 { 827 {
578 int i; 828 unsigned int i;
829
579 for (i = 3; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
580 CXINC; 831 CXINC;
581 } 832
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 833 cxstack_ix -= SLOT_COUNT; /* undo allocation */
834 }
583 835
584 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
585 837
586 { 838 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 840
589 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
590 slot->defsv = DEFSV; 842 save_perl_slots (slot);
591 slot->errsv = ERRSV; 843#else
592 slot->irsgv = GvSV (irsgv);
593
594 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
595 # include "state.h" 845 # include "state.h"
596 #undef VAR 846 #undef VARx
847#endif
597 } 848 }
598} 849}
599 850
600/* 851/*
601 * allocate various perl stacks. This is almost an exact copy 852 * allocate various perl stacks. This is almost an exact copy
602 * of perl.c:init_stacks, except that it uses less memory 853 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 854 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 855 * not usually need a lot of stackspace.
605 */ 856 */
606#if CORO_PREFER_PERL_FUNCTIONS 857#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 858# define coro_init_stacks(thx) init_stacks ()
608#else 859#else
609static void 860static void
610coro_init_stacks (pTHX) 861coro_init_stacks (pTHX)
611{ 862{
612 PL_curstackinfo = new_stackinfo(32, 8); 863 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
613 PL_curstackinfo->si_type = PERLSI_MAIN; 864 PL_curstackinfo->si_type = PERLSI_MAIN;
614 PL_curstack = PL_curstackinfo->si_stack; 865 PL_curstack = PL_curstackinfo->si_stack;
615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 866 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
616 867
617 PL_stack_base = AvARRAY(PL_curstack); 868 PL_stack_base = AvARRAY(PL_curstack);
… …
632#endif 883#endif
633 884
634 New(54,PL_scopestack,8,I32); 885 New(54,PL_scopestack,8,I32);
635 PL_scopestack_ix = 0; 886 PL_scopestack_ix = 0;
636 PL_scopestack_max = 8; 887 PL_scopestack_max = 8;
888#if HAS_SCOPESTACK_NAME
889 New(54,PL_scopestack_name,8,const char*);
890#endif
637 891
638 New(54,PL_savestack,24,ANY); 892 New(54,PL_savestack,24,ANY);
639 PL_savestack_ix = 0; 893 PL_savestack_ix = 0;
640 PL_savestack_max = 24; 894 PL_savestack_max = 24;
641 895
… …
669 } 923 }
670 924
671 Safefree (PL_tmps_stack); 925 Safefree (PL_tmps_stack);
672 Safefree (PL_markstack); 926 Safefree (PL_markstack);
673 Safefree (PL_scopestack); 927 Safefree (PL_scopestack);
928#if HAS_SCOPESTACK_NAME
929 Safefree (PL_scopestack_name);
930#endif
674 Safefree (PL_savestack); 931 Safefree (PL_savestack);
675#if !PERL_VERSION_ATLEAST (5,10,0) 932#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 933 Safefree (PL_retstack);
677#endif 934#endif
678} 935}
679 936
937#define CORO_RSS \
938 rss += sizeof (SYM (curstackinfo)); \
939 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
940 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
941 rss += SYM (tmps_max) * sizeof (SV *); \
942 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
943 rss += SYM (scopestack_max) * sizeof (I32); \
944 rss += SYM (savestack_max) * sizeof (ANY);
945
680static size_t 946static size_t
681coro_rss (pTHX_ struct coro *coro) 947coro_rss (pTHX_ struct coro *coro)
682{ 948{
683 size_t rss = sizeof (*coro); 949 size_t rss = sizeof (*coro);
684 950
685 if (coro->mainstack) 951 if (coro->mainstack)
686 { 952 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 953 if (coro->flags & CF_RUNNING)
691 { 954 {
692 slot = &tmp_slot; 955 #define SYM(sym) PL_ ## sym
693 956 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 957 #undef SYM
697 } 958 }
698 else 959 else
699 slot = coro->slot;
700
701 if (slot)
702 { 960 {
703 rss += sizeof (slot->curstackinfo); 961 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 962 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 963 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 964 }
715 } 965 }
716 966
717 return rss; 967 return rss;
718} 968}
… …
731#endif 981#endif
732 982
733/* 983/*
734 * This overrides the default magic get method of %SIG elements. 984 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 985 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 986 * and instead of trying to save and restore the hash elements (extremely slow),
737 * readback here. 987 * we just provide our own readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 988 */
742static int 989static int ecb_cold
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 990coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 991{
745 const char *s = MgPV_nolen_const (mg); 992 const char *s = MgPV_nolen_const (mg);
746 993
747 if (*s == '_') 994 if (*s == '_')
… …
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 998 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 999 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753 1000
754 if (svp) 1001 if (svp)
755 { 1002 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1003 SV *ssv;
1004
1005 if (!*svp)
1006 ssv = &PL_sv_undef;
1007 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1008 ssv = sv_2mortal (newRV_inc (*svp));
1009 else
1010 ssv = *svp;
1011
1012 sv_setsv (sv, ssv);
757 return 0; 1013 return 0;
758 } 1014 }
759 } 1015 }
760 1016
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1017 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762} 1018}
763 1019
764static int 1020static int ecb_cold
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1021coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{ 1022{
767 const char *s = MgPV_nolen_const (mg); 1023 const char *s = MgPV_nolen_const (mg);
768 1024
769 if (*s == '_') 1025 if (*s == '_')
… …
783 } 1039 }
784 1040
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1041 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786} 1042}
787 1043
788static int 1044static int ecb_cold
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1045coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{ 1046{
791 const char *s = MgPV_nolen_const (mg); 1047 const char *s = MgPV_nolen_const (mg);
792 1048
793 if (*s == '_') 1049 if (*s == '_')
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1054 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1055
800 if (svp) 1056 if (svp)
801 { 1057 {
802 SV *old = *svp; 1058 SV *old = *svp;
803 *svp = newSVsv (sv); 1059 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1060 SvREFCNT_dec (old);
805 return 0; 1061 return 0;
806 } 1062 }
807 } 1063 }
808 1064
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1076slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1077{
822 return 0; 1078 return 0;
823} 1079}
824 1080
825static UNOP coro_setup_op; 1081static int
1082slf_check_repeat (pTHX_ struct CoroSLF *frame)
1083{
1084 return 1;
1085}
826 1086
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1087static UNOP init_perl_op;
1088
1089ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1090init_perl (pTHX_ struct coro *coro)
829{ 1091{
830 /* 1092 /*
831 * emulate part of the perl startup here. 1093 * emulate part of the perl startup here.
832 */ 1094 */
833 coro_init_stacks (aTHX); 1095 coro_init_stacks (aTHX);
834 1096
835 PL_runops = RUNOPS_DEFAULT; 1097 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1098 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1099 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1100 PL_comppad = 0;
1101 PL_comppad_name = 0;
1102 PL_comppad_name_fill = 0;
1103 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1104 PL_curpm = 0;
840 PL_curpad = 0; 1105 PL_curpad = 0;
841 PL_localizing = 0; 1106 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1107 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1108#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1109 PL_parser = 0;
846#endif 1110#endif
1111 PL_hints = 0;
847 1112
848 /* recreate the die/warn hooks */ 1113 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1114 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1115 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1116
852 GvSV (PL_defgv) = newSV (0); 1117 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1118 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1119 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1120 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1121 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1122 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1123 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1124
859 { 1125 {
860 dSP; 1126 dSP;
861 UNOP myop; 1127 UNOP myop;
862 1128
863 Zero (&myop, 1, UNOP); 1129 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1130 myop.op_next = Nullop;
1131 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1132 myop.op_flags = OPf_WANT_VOID;
866 1133
867 PUSHMARK (SP); 1134 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1135 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1136 PUTBACK;
870 PL_op = (OP *)&myop; 1137 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1139 }
874 1140
875 /* this newly created coroutine might be run on an existing cctx which most 1141 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1142 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1143 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1144 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1145 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1146 slf_frame.destroy = 0;
880 1147
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1148 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1149 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1150 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1151 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1152 /* no flags etc. required, as an init function won't be called */
886 1153
887 PL_op = (OP *)&coro_setup_op; 1154 PL_op = (OP *)&init_perl_op;
888 1155
889 /* copy throw, in case it was set before coro_setup */ 1156 /* copy throw, in case it was set before init_perl */
890 coro_throw = coro->throw; 1157 CORO_THROW = coro->except;
891}
892 1158
1159 SWAP_SVS (coro);
1160
1161 if (ecb_expect_false (enable_times))
1162 {
1163 coro_times_update ();
1164 coro_times_sub (coro);
1165 }
1166}
1167
893static void 1168static void
894coro_destruct (pTHX_ struct coro *coro) 1169coro_unwind_stacks (pTHX)
895{ 1170{
896 if (!IN_DESTRUCT) 1171 if (!IN_DESTRUCT)
897 { 1172 {
898 /* restore all saved variables and stuff */ 1173 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1174 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1182 POPSTACK_TO (PL_mainstack);
908 1183
909 /* unwind main stack */ 1184 /* unwind main stack */
910 dounwind (-1); 1185 dounwind (-1);
911 } 1186 }
1187}
912 1188
913 SvREFCNT_dec (GvSV (PL_defgv)); 1189static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1190destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1191{
916 SvREFCNT_dec (PL_defoutgv); 1192 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1193
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1194 {
1195 SV *old_current = SvRV (coro_current);
1196 struct coro *current = SvSTATE (old_current);
1197
1198 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1199
1200 save_perl (aTHX_ current);
1201
1202 /* this will cause transfer_check to croak on block*/
1203 SvRV_set (coro_current, (SV *)coro->hv);
1204
1205 load_perl (aTHX_ coro);
1206
1207 coro_unwind_stacks (aTHX);
1208
1209 /* restore swapped sv's */
1210 SWAP_SVS (coro);
1211
1212 coro_destruct_stacks (aTHX);
1213
1214 /* now save some sv's to be free'd later */
1215 svf [0] = GvSV (PL_defgv);
1216 svf [1] = (SV *)GvAV (PL_defgv);
1217 svf [2] = GvSV (PL_errgv);
1218 svf [3] = (SV *)PL_defoutgv;
1219 svf [4] = PL_rs;
1220 svf [5] = GvSV (irsgv);
1221 svf [6] = (SV *)GvHV (PL_hintgv);
1222 svf [7] = PL_diehook;
1223 svf [8] = PL_warnhook;
1224 assert (9 == sizeof (svf) / sizeof (*svf));
1225
1226 SvRV_set (coro_current, old_current);
1227
1228 load_perl (aTHX_ current);
1229 }
1230
1231 {
1232 unsigned int i;
1233
1234 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1235 SvREFCNT_dec (svf [i]);
1236
923 SvREFCNT_dec (coro->saved_deffh); 1237 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro_throw); 1238 SvREFCNT_dec (coro->rouse_cb);
925 1239 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1240 SvREFCNT_dec (coro->invoke_av);
1241 }
927} 1242}
928 1243
929INLINE void 1244ecb_inline void
930free_coro_mortal (pTHX) 1245free_coro_mortal (pTHX)
931{ 1246{
932 if (expect_true (coro_mortal)) 1247 if (ecb_expect_true (coro_mortal))
933 { 1248 {
934 SvREFCNT_dec (coro_mortal); 1249 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1250 coro_mortal = 0;
936 } 1251 }
937} 1252}
938 1253
939static int 1254static int
940runops_trace (pTHX) 1255runops_trace (pTHX)
941{ 1256{
942 COP *oldcop = 0; 1257 COP *oldcop = 0;
943 int oldcxix = -2; 1258 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1259
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1260 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1261 {
949 PERL_ASYNC_CHECK (); 1262 PERL_ASYNC_CHECK ();
950 1263
951 if (cctx->flags & CC_TRACE_ALL) 1264 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1265 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1266 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1267 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1268 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1269 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1270 AV *av = newAV (); /* return values */
958 SV **cb; 1271 SV **cb;
… …
995 1308
996 if (PL_curcop != &PL_compiling) 1309 if (PL_curcop != &PL_compiling)
997 { 1310 {
998 SV **cb; 1311 SV **cb;
999 1312
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1313 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1314 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1315 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1316
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1317 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1318 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1319 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1320 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1321 SV *fullname = sv_2mortal (newSV (0));
1010 1322
1011 if (isGV (gv)) 1323 if (isGV (gv))
… …
1016 SAVETMPS; 1328 SAVETMPS;
1017 EXTEND (SP, 3); 1329 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1330 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1331 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1332 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1333 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1334 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1335 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1336 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1337 SPAGAIN;
1026 FREETMPS; 1338 FREETMPS;
… …
1029 } 1341 }
1030 1342
1031 oldcxix = cxstack_ix; 1343 oldcxix = cxstack_ix;
1032 } 1344 }
1033 1345
1034 if (cctx->flags & CC_TRACE_LINE) 1346 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1347 {
1036 dSP; 1348 dSP;
1037 1349
1038 PL_runops = RUNOPS_DEFAULT; 1350 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1351 ENTER;
… …
1058 1370
1059 TAINT_NOT; 1371 TAINT_NOT;
1060 return 0; 1372 return 0;
1061} 1373}
1062 1374
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1375static struct CoroSLF cctx_ssl_frame;
1065 1376
1066static void 1377static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1378slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1379{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1380 ta->prev = 0;
1071} 1381}
1072 1382
1073static int 1383static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1384slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1385{
… …
1077 1387
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1388 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1389}
1080 1390
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1391/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1392static void ecb_noinline
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1393cctx_prepare (pTHX)
1084{ 1394{
1085 PL_top_env = &PL_start_env; 1395 PL_top_env = &PL_start_env;
1086 1396
1087 if (cctx->flags & CC_TRACE) 1397 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1398 PL_runops = runops_trace;
1089 1399
1090 /* we already must be executing an SLF op, there is no other valid way 1400 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1401 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1402 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1403 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1404
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1405 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1406 cctx_ssl_frame = slf_frame;
1098 1407
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1408 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1409 slf_frame.check = slf_check_set_stacklevel;
1101} 1410}
1102 1411
1103/* the tail of transfer: execute stuff we can only do after a transfer */ 1412/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void 1413ecb_inline void
1105transfer_tail (pTHX) 1414transfer_tail (pTHX)
1106{ 1415{
1107 free_coro_mortal (aTHX); 1416 free_coro_mortal (aTHX);
1108} 1417}
1109 1418
… …
1124 /* normally we would need to skip the entersub here */ 1433 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1434 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1435 /* PL_nop = PL_nop->op_next */
1127 1436
1128 /* inject a fake subroutine call to cctx_init */ 1437 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1438 cctx_prepare (aTHX);
1130 1439
1131 /* cctx_run is the alternative tail of transfer() */ 1440 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1441 transfer_tail (aTHX);
1133 1442
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1443 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1444 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1445 perl_run (PL_curinterp);
1446 /*
1447 * Unfortunately, there is no way to get at the return values of the
1448 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1449 * runtime errors here, as this is just a random interpreter, not a thread.
1450 */
1137 1451
1138 /* 1452 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1453 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1454 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1455 * reason for perl_run to return. We try to exit by jumping to the
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1456 * bootstrap-time "top" top_env, as we cannot restore the "main"
1143 * coroutine as Coro has no such concept 1457 * coroutine as Coro has no such concept.
1458 * This actually isn't valid with the pthread backend, but OSes requiring
1459 * that backend are too broken to do it in a standards-compliant way.
1144 */ 1460 */
1145 PL_top_env = main_top_env; 1461 PL_top_env = main_top_env;
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1462 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1463 }
1148} 1464}
1149 1465
1150static coro_cctx * 1466static coro_cctx *
1151cctx_new () 1467cctx_new (void)
1152{ 1468{
1153 coro_cctx *cctx; 1469 coro_cctx *cctx;
1154 1470
1155 ++cctx_count; 1471 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx); 1472 New (0, cctx, 1, coro_cctx);
… …
1162 return cctx; 1478 return cctx;
1163} 1479}
1164 1480
1165/* create a new cctx only suitable as source */ 1481/* create a new cctx only suitable as source */
1166static coro_cctx * 1482static coro_cctx *
1167cctx_new_empty () 1483cctx_new_empty (void)
1168{ 1484{
1169 coro_cctx *cctx = cctx_new (); 1485 coro_cctx *cctx = cctx_new ();
1170 1486
1171 cctx->sptr = 0; 1487 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0); 1488 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1174 return cctx; 1490 return cctx;
1175} 1491}
1176 1492
1177/* create a new cctx suitable as destination/running a perl interpreter */ 1493/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx * 1494static coro_cctx *
1179cctx_new_run () 1495cctx_new_run (void)
1180{ 1496{
1181 coro_cctx *cctx = cctx_new (); 1497 coro_cctx *cctx = cctx_new ();
1182 void *stack_start; 1498 void *stack_start;
1183 size_t stack_size; 1499 size_t stack_size;
1184 1500
1185#if HAVE_MMAP 1501#if HAVE_MMAP
1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1502 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1187 /* mmap supposedly does allocate-on-write for us */ 1503 /* mmap supposedly does allocate-on-write for us */
1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1504 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1189 1505
1190 if (cctx->sptr != (void *)-1) 1506 if (cctx->sptr != (void *)-1)
1191 { 1507 {
1192 #if CORO_STACKGUARD 1508 #if CORO_STACKGUARD
1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1509 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1225cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1226{ 1542{
1227 if (!cctx) 1543 if (!cctx)
1228 return; 1544 return;
1229 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1230 --cctx_count; 1548 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1232 1550
1233 /* coro_transfer creates new, empty cctx's */ 1551 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1552 if (cctx->sptr)
… …
1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1570#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1253 1571
1254static coro_cctx * 1572static coro_cctx *
1255cctx_get (pTHX) 1573cctx_get (pTHX)
1256{ 1574{
1257 while (expect_true (cctx_first)) 1575 while (ecb_expect_true (cctx_first))
1258 { 1576 {
1259 coro_cctx *cctx = cctx_first; 1577 coro_cctx *cctx = cctx_first;
1260 cctx_first = cctx->next; 1578 cctx_first = cctx->next;
1261 --cctx_idle; 1579 --cctx_idle;
1262 1580
1263 if (expect_true (!CCTX_EXPIRED (cctx))) 1581 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1264 return cctx; 1582 return cctx;
1265 1583
1266 cctx_destroy (cctx); 1584 cctx_destroy (cctx);
1267 } 1585 }
1268 1586
… …
1273cctx_put (coro_cctx *cctx) 1591cctx_put (coro_cctx *cctx)
1274{ 1592{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1593 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276 1594
1277 /* free another cctx if overlimit */ 1595 /* free another cctx if overlimit */
1278 if (expect_false (cctx_idle >= cctx_max_idle)) 1596 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1279 { 1597 {
1280 coro_cctx *first = cctx_first; 1598 coro_cctx *first = cctx_first;
1281 cctx_first = first->next; 1599 cctx_first = first->next;
1282 --cctx_idle; 1600 --cctx_idle;
1283 1601
… …
1294static void 1612static void
1295transfer_check (pTHX_ struct coro *prev, struct coro *next) 1613transfer_check (pTHX_ struct coro *prev, struct coro *next)
1296{ 1614{
1297 /* TODO: throwing up here is considered harmful */ 1615 /* TODO: throwing up here is considered harmful */
1298 1616
1299 if (expect_true (prev != next)) 1617 if (ecb_expect_true (prev != next))
1300 { 1618 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1619 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1620 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1621
1304 if (expect_false (next->flags & CF_RUNNING)) 1622 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1623 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1624
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1625#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1626 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1627 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1628#endif
1314 } 1629 }
1315} 1630}
1316 1631
1317/* always use the TRANSFER macro */ 1632/* always use the TRANSFER macro */
1318static void NOINLINE /* noinline so we have a fixed stackframe */ 1633static void ecb_noinline /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1634transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1635{
1321 dSTACKLEVEL; 1636 dSTACKLEVEL;
1322 1637
1323 /* sometimes transfer is only called to set idle_sp */ 1638 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1639 if (ecb_expect_false (!prev))
1325 { 1640 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1641 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1642 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1643 }
1329 else if (expect_true (prev != next)) 1644 else if (ecb_expect_true (prev != next))
1330 { 1645 {
1331 coro_cctx *prev__cctx; 1646 coro_cctx *cctx_prev;
1332 1647
1333 if (expect_false (prev->flags & CF_NEW)) 1648 if (ecb_expect_false (prev->flags & CF_NEW))
1334 { 1649 {
1335 /* create a new empty/source context */ 1650 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1651 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1652 prev->flags |= CF_RUNNING;
1339 } 1653 }
1340 1654
1341 prev->flags &= ~CF_RUNNING; 1655 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1656 next->flags |= CF_RUNNING;
1343 1657
1344 /* first get rid of the old state */ 1658 /* first get rid of the old state */
1345 save_perl (aTHX_ prev); 1659 save_perl (aTHX_ prev);
1346 1660
1347 if (expect_false (next->flags & CF_NEW)) 1661 if (ecb_expect_false (next->flags & CF_NEW))
1348 { 1662 {
1349 /* need to start coroutine */ 1663 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1664 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1665 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1666 init_perl (aTHX_ next);
1353 } 1667 }
1354 else 1668 else
1355 load_perl (aTHX_ next); 1669 load_perl (aTHX_ next);
1356 1670
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1671 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1672 if (ecb_expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1673 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1674 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1675 && !force_cctx
1364 )) 1676 ))
1365 { 1677 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1678 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1679 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1680
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1681 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1682 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1683 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1684 if (ecb_expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1685 next->cctx = cctx_get (aTHX);
1376 1686
1377 cctx_put (prev__cctx); 1687 cctx_put (cctx_current);
1378 } 1688 }
1689 else
1690 prev->cctx = cctx_current;
1379 1691
1380 ++next->usecount; 1692 ++next->usecount;
1381 1693
1382 if (expect_true (!next->cctx)) 1694 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1695 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1696
1385 if (expect_false (prev__cctx != next->cctx)) 1697 next->cctx = 0;
1698
1699 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1700 {
1387 prev__cctx->top_env = PL_top_env; 1701 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1702 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1703 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1704 }
1391 1705
1392 transfer_tail (aTHX); 1706 transfer_tail (aTHX);
1393 } 1707 }
1394} 1708}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1710#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1711#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1712
1399/** high level stuff ********************************************************/ 1713/** high level stuff ********************************************************/
1400 1714
1715/* this function is actually Coro, not Coro::State, but we call it from here */
1716/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1717static void
1718coro_call_on_destroy (pTHX_ struct coro *coro);
1719
1720static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1721coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1722{
1404 if (coro->flags & CF_DESTROYED) 1723 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1724 return;
1406 1725
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1726 slf_destroy (aTHX_ coro);
1409 1727
1410 coro->flags |= CF_DESTROYED; 1728 coro->flags |= CF_ZOMBIE;
1411 1729
1412 if (coro->flags & CF_READY) 1730 if (coro->flags & CF_READY)
1413 { 1731 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1732 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1733 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1734 --coro_nready;
1417 } 1735 }
1418 else 1736 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1737 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1738
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1739 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1740 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1741 if (coro == coro_first) coro_first = coro->next;
1443 1742
1444 return 1; 1743 if (coro->mainstack
1744 && coro->mainstack != main_mainstack
1745 && coro->slot
1746 && !PL_dirty)
1747 destroy_perl (aTHX_ coro);
1748
1749 cctx_destroy (coro->cctx);
1750 SvREFCNT_dec (coro->startcv);
1751 SvREFCNT_dec (coro->args);
1752 SvREFCNT_dec (coro->swap_sv);
1753 SvREFCNT_dec (CORO_THROW);
1754
1755 coro_call_on_destroy (aTHX_ coro);
1756
1757 /* more destruction mayhem in coro_state_free */
1445} 1758}
1446 1759
1447static int 1760static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1761coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1762{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1763 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1764 mg->mg_ptr = 0;
1452 1765
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1766 coro_state_destroy (aTHX_ coro);
1767 SvREFCNT_dec (coro->on_destroy);
1768 SvREFCNT_dec (coro->status);
1769
1458 Safefree (coro); 1770 Safefree (coro);
1459 }
1460 1771
1461 return 0; 1772 return 0;
1462} 1773}
1463 1774
1464static int 1775static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1776coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1777{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1778 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1779 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1780 mg->mg_ptr = 0;
1781 mg->mg_virtual = 0;
1470 1782
1471 return 0; 1783 return 0;
1472} 1784}
1473 1785
1474static MGVTBL coro_state_vtbl = { 1786static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1811 TRANSFER (ta, 1);
1500} 1812}
1501 1813
1502/** Coro ********************************************************************/ 1814/** Coro ********************************************************************/
1503 1815
1504INLINE void 1816ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1817coro_enq (pTHX_ struct coro *coro)
1506{ 1818{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1819 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1820
1510INLINE SV * 1821 SvREFCNT_inc_NN (coro->hv);
1822
1823 coro->next_ready = 0;
1824 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1825 ready [1] = coro;
1826}
1827
1828ecb_inline struct coro *
1511coro_deq (pTHX) 1829coro_deq (pTHX)
1512{ 1830{
1513 int prio; 1831 int prio;
1514 1832
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1833 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1834 {
1517 return av_shift (coro_ready [prio]); 1835 struct coro **ready = coro_ready [prio];
1836
1837 if (ready [0])
1838 {
1839 struct coro *coro = ready [0];
1840 ready [0] = coro->next_ready;
1841 return coro;
1842 }
1843 }
1518 1844
1519 return 0; 1845 return 0;
1846}
1847
1848static void
1849invoke_sv_ready_hook_helper (void)
1850{
1851 dTHX;
1852 dSP;
1853
1854 ENTER;
1855 SAVETMPS;
1856
1857 PUSHMARK (SP);
1858 PUTBACK;
1859 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1860
1861 FREETMPS;
1862 LEAVE;
1520} 1863}
1521 1864
1522static int 1865static int
1523api_ready (pTHX_ SV *coro_sv) 1866api_ready (pTHX_ SV *coro_sv)
1524{ 1867{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1868 struct coro *coro = SvSTATE (coro_sv);
1533 1869
1534 if (coro->flags & CF_READY) 1870 if (coro->flags & CF_READY)
1535 return 0; 1871 return 0;
1536 1872
1537 coro->flags |= CF_READY; 1873 coro->flags |= CF_READY;
1538 1874
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1875 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1876
1545 if (sv_hook) 1877 if (!coro_nready++)
1546 { 1878 if (coroapi.readyhook)
1547 dSP; 1879 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1880
1563 return 1; 1881 return 1;
1564} 1882}
1565 1883
1566static int 1884static int
1567api_is_ready (pTHX_ SV *coro_sv) 1885api_is_ready (pTHX_ SV *coro_sv)
1568{ 1886{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1887 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1888}
1571 1889
1572INLINE void 1890/* expects to own a reference to next->hv */
1891ecb_inline void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1892prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1893{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1894 SV *prev_sv = SvRV (coro_current);
1895
1614 ta->prev = SvSTATE_hv (prev_sv); 1896 ta->prev = SvSTATE_hv (prev_sv);
1897 ta->next = next;
1898
1615 TRANSFER_CHECK (*ta); 1899 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1900
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1901 SvRV_set (coro_current, (SV *)next->hv);
1619 1902
1620 free_coro_mortal (aTHX); 1903 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1904 coro_mortal = prev_sv;
1622} 1905}
1623 1906
1624INLINE void 1907static void
1908prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1909{
1910 for (;;)
1911 {
1912 struct coro *next = coro_deq (aTHX);
1913
1914 if (ecb_expect_true (next))
1915 {
1916 /* cannot transfer to destroyed coros, skip and look for next */
1917 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1918 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1919 else
1920 {
1921 next->flags &= ~CF_READY;
1922 --coro_nready;
1923
1924 prepare_schedule_to (aTHX_ ta, next);
1925 break;
1926 }
1927 }
1928 else
1929 {
1930 /* nothing to schedule: call the idle handler */
1931 if (SvROK (sv_idle)
1932 && SvOBJECT (SvRV (sv_idle)))
1933 {
1934 if (SvRV (sv_idle) == SvRV (coro_current))
1935 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1936
1937 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1938 api_ready (aTHX_ SvRV (sv_idle));
1939 --coro_nready;
1940 }
1941 else
1942 {
1943 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1944 dSP;
1945
1946 ENTER;
1947 SAVETMPS;
1948
1949 PUSHMARK (SP);
1950 PUTBACK;
1951 call_sv (sv_idle, G_VOID | G_DISCARD);
1952
1953 FREETMPS;
1954 LEAVE;
1955 }
1956 }
1957 }
1958}
1959
1960ecb_inline void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1961prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1962{
1627 api_ready (aTHX_ coro_current); 1963 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1964 prepare_schedule (aTHX_ ta);
1629} 1965}
1630 1966
1631INLINE void 1967ecb_inline void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1968prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{ 1969{
1634 SV *prev = SvRV (coro_current); 1970 SV *prev = SvRV (coro_current);
1635 1971
1636 if (coro_nready) 1972 if (coro_nready)
… …
1649 1985
1650 prepare_schedule (aTHX_ &ta); 1986 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1987 TRANSFER (ta, 1);
1652} 1988}
1653 1989
1990static void
1991api_schedule_to (pTHX_ SV *coro_sv)
1992{
1993 struct coro_transfer_args ta;
1994 struct coro *next = SvSTATE (coro_sv);
1995
1996 SvREFCNT_inc_NN (coro_sv);
1997 prepare_schedule_to (aTHX_ &ta, next);
1998}
1999
1654static int 2000static int
1655api_cede (pTHX) 2001api_cede (pTHX)
1656{ 2002{
1657 struct coro_transfer_args ta; 2003 struct coro_transfer_args ta;
1658 2004
1659 prepare_cede (aTHX_ &ta); 2005 prepare_cede (aTHX_ &ta);
1660 2006
1661 if (expect_true (ta.prev != ta.next)) 2007 if (ecb_expect_true (ta.prev != ta.next))
1662 { 2008 {
1663 TRANSFER (ta, 1); 2009 TRANSFER (ta, 1);
1664 return 1; 2010 return 1;
1665 } 2011 }
1666 else 2012 else
… …
1685static void 2031static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 2032api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 2033{
1688 struct coro *coro = SvSTATE (coro_sv); 2034 struct coro *coro = SvSTATE (coro_sv);
1689 2035
2036 if (coro->flags & CF_RUNNING)
2037 croak ("cannot enable tracing on a running coroutine, caught");
2038
1690 if (flags & CC_TRACE) 2039 if (flags & CC_TRACE)
1691 { 2040 {
1692 if (!coro->cctx) 2041 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 2042 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 2043 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 2044 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 2045
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2046 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 2047 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2048 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 2049 {
… …
1703 if (coro->flags & CF_RUNNING) 2052 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2053 PL_runops = RUNOPS_DEFAULT;
1705 else 2054 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2055 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2056 }
2057}
2058
2059static void
2060coro_push_av (pTHX_ AV *av, I32 gimme_v)
2061{
2062 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2063 {
2064 dSP;
2065
2066 if (gimme_v == G_SCALAR)
2067 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2068 else
2069 {
2070 int i;
2071 EXTEND (SP, AvFILLp (av) + 1);
2072
2073 for (i = 0; i <= AvFILLp (av); ++i)
2074 PUSHs (AvARRAY (av)[i]);
2075 }
2076
2077 PUTBACK;
2078 }
2079}
2080
2081static void
2082coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2083{
2084 if (!coro->on_destroy)
2085 coro->on_destroy = newAV ();
2086
2087 av_push (coro->on_destroy, cb);
2088}
2089
2090static void
2091slf_destroy_join (pTHX_ struct CoroSLF *frame)
2092{
2093 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2094}
2095
2096static int
2097slf_check_join (pTHX_ struct CoroSLF *frame)
2098{
2099 struct coro *coro = (struct coro *)frame->data;
2100
2101 if (!coro->status)
2102 return 1;
2103
2104 frame->destroy = 0;
2105
2106 coro_push_av (aTHX_ coro->status, GIMME_V);
2107
2108 SvREFCNT_dec ((SV *)coro->hv);
2109
2110 return 0;
2111}
2112
2113static void
2114slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2117
2118 if (items > 1)
2119 croak ("join called with too many arguments");
2120
2121 if (coro->status)
2122 frame->prepare = prepare_nop;
2123 else
2124 {
2125 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2126 frame->prepare = prepare_schedule;
2127 }
2128
2129 frame->check = slf_check_join;
2130 frame->destroy = slf_destroy_join;
2131 frame->data = (void *)coro;
2132 SvREFCNT_inc (coro->hv);
2133}
2134
2135static void
2136coro_call_on_destroy (pTHX_ struct coro *coro)
2137{
2138 AV *od = coro->on_destroy;
2139
2140 if (!od)
2141 return;
2142
2143 while (AvFILLp (od) >= 0)
2144 {
2145 SV *cb = sv_2mortal (av_pop (od));
2146
2147 /* coro hv's (and only hv's at the moment) are supported as well */
2148 if (SvSTATEhv_p (aTHX_ cb))
2149 api_ready (aTHX_ cb);
2150 else
2151 {
2152 dSP; /* don't disturb outer sp */
2153 PUSHMARK (SP);
2154
2155 if (coro->status)
2156 {
2157 PUTBACK;
2158 coro_push_av (aTHX_ coro->status, G_ARRAY);
2159 SPAGAIN;
2160 }
2161
2162 PUTBACK;
2163 call_sv (cb, G_VOID | G_DISCARD);
2164 }
2165 }
2166}
2167
2168static void
2169coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2170{
2171 AV *av;
2172
2173 if (coro->status)
2174 {
2175 av = coro->status;
2176 av_clear (av);
2177 }
2178 else
2179 av = coro->status = newAV ();
2180
2181 /* items are actually not so common, so optimise for this case */
2182 if (items)
2183 {
2184 int i;
2185
2186 av_extend (av, items - 1);
2187
2188 for (i = 0; i < items; ++i)
2189 av_push (av, SvREFCNT_inc_NN (arg [i]));
2190 }
2191}
2192
2193static void
2194slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2195{
2196 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2197 api_ready (aTHX_ sv_manager);
2198
2199 frame->prepare = prepare_schedule;
2200 frame->check = slf_check_repeat;
2201
2202 /* as a minor optimisation, we could unwind all stacks here */
2203 /* but that puts extra pressure on pp_slf, and is not worth much */
2204 /*coro_unwind_stacks (aTHX);*/
2205}
2206
2207static void
2208slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 HV *coro_hv = (HV *)SvRV (coro_current);
2211
2212 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2213 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2214}
2215
2216static void
2217slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2218{
2219 HV *coro_hv;
2220 struct coro *coro;
2221
2222 if (items <= 0)
2223 croak ("Coro::cancel called without coro object,");
2224
2225 coro = SvSTATE (arg [0]);
2226 coro_hv = coro->hv;
2227
2228 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2229
2230 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2231 {
2232 /* coro currently busy cancelling something, so just notify it */
2233 coro->slf_frame.data = (void *)coro;
2234
2235 frame->prepare = prepare_nop;
2236 frame->check = slf_check_nop;
2237 }
2238 else if (coro_hv == (HV *)SvRV (coro_current))
2239 {
2240 /* cancelling the current coro is allowed, and equals terminate */
2241 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2242 }
2243 else
2244 {
2245 struct coro *self = SvSTATE_current;
2246
2247 /* otherwise we cancel directly, purely for speed reasons
2248 * unfortunately, this requires some magic trickery, as
2249 * somebody else could cancel us, so we have to fight the cancellation.
2250 * this is ugly, and hopefully fully worth the extra speed.
2251 * besides, I can't get the slow-but-safe version working...
2252 */
2253 slf_frame.data = 0;
2254 self->flags |= CF_NOCANCEL;
2255 coro_state_destroy (aTHX_ coro);
2256 self->flags &= ~CF_NOCANCEL;
2257
2258 if (slf_frame.data)
2259 {
2260 /* while we were busy we have been cancelled, so terminate */
2261 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2262 }
2263 else
2264 {
2265 frame->prepare = prepare_nop;
2266 frame->check = slf_check_nop;
2267 }
2268 }
2269}
2270
2271static int
2272slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2273{
2274 frame->prepare = 0;
2275 coro_unwind_stacks (aTHX);
2276
2277 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2278
2279 return 1;
2280}
2281
2282static int
2283safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2284{
2285 if (coro->cctx)
2286 croak ("coro inside C callback, unable to cancel at this time, caught");
2287
2288 if (coro->flags & CF_NEW)
2289 {
2290 coro_set_status (aTHX_ coro, arg, items);
2291 coro_state_destroy (aTHX_ coro);
2292 }
2293 else
2294 {
2295 if (!coro->slf_frame.prepare)
2296 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2297
2298 slf_destroy (aTHX_ coro);
2299
2300 coro_set_status (aTHX_ coro, arg, items);
2301 coro->slf_frame.prepare = prepare_nop;
2302 coro->slf_frame.check = slf_check_safe_cancel;
2303
2304 api_ready (aTHX_ (SV *)coro->hv);
2305 }
2306
2307 return 1;
2308}
2309
2310/*****************************************************************************/
2311/* async pool handler */
2312
2313static int
2314slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2315{
2316 HV *hv = (HV *)SvRV (coro_current);
2317 struct coro *coro = (struct coro *)frame->data;
2318
2319 if (!coro->invoke_cb)
2320 return 1; /* loop till we have invoke */
2321 else
2322 {
2323 hv_store (hv, "desc", sizeof ("desc") - 1,
2324 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2325
2326 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2327
2328 {
2329 dSP;
2330 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2331 PUTBACK;
2332 }
2333
2334 SvREFCNT_dec (GvAV (PL_defgv));
2335 GvAV (PL_defgv) = coro->invoke_av;
2336 coro->invoke_av = 0;
2337
2338 return 0;
2339 }
2340}
2341
2342static void
2343slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2344{
2345 HV *hv = (HV *)SvRV (coro_current);
2346 struct coro *coro = SvSTATE_hv ((SV *)hv);
2347
2348 if (ecb_expect_true (coro->saved_deffh))
2349 {
2350 /* subsequent iteration */
2351 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2352 coro->saved_deffh = 0;
2353
2354 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2355 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2356 {
2357 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2358 return;
2359 }
2360 else
2361 {
2362 av_clear (GvAV (PL_defgv));
2363 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2364
2365 coro->prio = 0;
2366
2367 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2368 api_trace (aTHX_ coro_current, 0);
2369
2370 frame->prepare = prepare_schedule;
2371 av_push (av_async_pool, SvREFCNT_inc (hv));
2372 }
2373 }
2374 else
2375 {
2376 /* first iteration, simply fall through */
2377 frame->prepare = prepare_nop;
2378 }
2379
2380 frame->check = slf_check_pool_handler;
2381 frame->data = (void *)coro;
2382}
2383
2384/*****************************************************************************/
2385/* rouse callback */
2386
2387#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2388
2389static void
2390coro_rouse_callback (pTHX_ CV *cv)
2391{
2392 dXSARGS;
2393 SV *data = (SV *)S_GENSUB_ARG;
2394
2395 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2396 {
2397 /* first call, set args */
2398 SV *coro = SvRV (data);
2399 AV *av = newAV ();
2400
2401 SvRV_set (data, (SV *)av);
2402
2403 /* better take a full copy of the arguments */
2404 while (items--)
2405 av_store (av, items, newSVsv (ST (items)));
2406
2407 api_ready (aTHX_ coro);
2408 SvREFCNT_dec (coro);
2409 }
2410
2411 XSRETURN_EMPTY;
2412}
2413
2414static int
2415slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2416{
2417 SV *data = (SV *)frame->data;
2418
2419 if (CORO_THROW)
2420 return 0;
2421
2422 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2423 return 1;
2424
2425 /* now push all results on the stack */
2426 {
2427 dSP;
2428 AV *av = (AV *)SvRV (data);
2429 int i;
2430
2431 EXTEND (SP, AvFILLp (av) + 1);
2432 for (i = 0; i <= AvFILLp (av); ++i)
2433 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2434
2435 /* we have stolen the elements, so set length to zero and free */
2436 AvFILLp (av) = -1;
2437 av_undef (av);
2438
2439 PUTBACK;
2440 }
2441
2442 return 0;
2443}
2444
2445static void
2446slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2447{
2448 SV *cb;
2449
2450 if (items)
2451 cb = arg [0];
2452 else
2453 {
2454 struct coro *coro = SvSTATE_current;
2455
2456 if (!coro->rouse_cb)
2457 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2458
2459 cb = sv_2mortal (coro->rouse_cb);
2460 coro->rouse_cb = 0;
2461 }
2462
2463 if (!SvROK (cb)
2464 || SvTYPE (SvRV (cb)) != SVt_PVCV
2465 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2466 croak ("Coro::rouse_wait called with illegal callback argument,");
2467
2468 {
2469 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2470 SV *data = (SV *)S_GENSUB_ARG;
2471
2472 frame->data = (void *)data;
2473 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2474 frame->check = slf_check_rouse_wait;
2475 }
2476}
2477
2478static SV *
2479coro_new_rouse_cb (pTHX)
2480{
2481 HV *hv = (HV *)SvRV (coro_current);
2482 struct coro *coro = SvSTATE_hv (hv);
2483 SV *data = newRV_inc ((SV *)hv);
2484 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2485
2486 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2487 SvREFCNT_dec (data); /* magicext increases the refcount */
2488
2489 SvREFCNT_dec (coro->rouse_cb);
2490 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2491
2492 return cb;
1708} 2493}
1709 2494
1710/*****************************************************************************/ 2495/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2496/* schedule-like-function opcode (SLF) */
1712 2497
… …
1762 frame->prepare = prepare_schedule; 2547 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2548 frame->check = slf_check_nop;
1764} 2549}
1765 2550
1766static void 2551static void
2552slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2553{
2554 struct coro *next = (struct coro *)slf_frame.data;
2555
2556 SvREFCNT_inc_NN (next->hv);
2557 prepare_schedule_to (aTHX_ ta, next);
2558}
2559
2560static void
2561slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 if (!items)
2564 croak ("Coro::schedule_to expects a coroutine argument, caught");
2565
2566 frame->data = (void *)SvSTATE (arg [0]);
2567 frame->prepare = slf_prepare_schedule_to;
2568 frame->check = slf_check_nop;
2569}
2570
2571static void
2572slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 api_ready (aTHX_ SvRV (coro_current));
2575
2576 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2577}
2578
2579static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2580slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2581{
1769 frame->prepare = prepare_cede; 2582 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop; 2583 frame->check = slf_check_nop;
1771} 2584}
… …
1773static void 2586static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2587slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{ 2588{
1776 frame->prepare = prepare_cede_notself; 2589 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
2591}
2592
2593/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2594static void
2595slf_destroy (pTHX_ struct coro *coro)
2596{
2597 /* this callback is reserved for slf functions needing to do cleanup */
2598 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2599 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2600
2601 /*
2602 * The on_destroy above most likely is from an SLF call.
2603 * Since by definition the SLF call will not finish when we destroy
2604 * the coro, we will have to force-finish it here, otherwise
2605 * cleanup functions cannot call SLF functions.
2606 */
2607 coro->slf_frame.prepare = 0;
1778} 2608}
1779 2609
1780/* 2610/*
1781 * these not obviously related functions are all rolled into one 2611 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2612 * function to increase chances that they all will call transfer with the same
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2619 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2620
1791 /* set up the slf frame, unless it has already been set-up */ 2621 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2622 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2623 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2624 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2625 {
1796 /* first iteration */ 2626 /* first iteration */
1797 dSP; 2627 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2628 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2629 int items = SP - arg; /* args without function object */
… …
1839 } 2669 }
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2670 while (slf_frame.check (aTHX_ &slf_frame));
1841 2671
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2672 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2673
2674 /* exception handling */
2675 if (ecb_expect_false (CORO_THROW))
2676 {
2677 SV *exception = sv_2mortal (CORO_THROW);
2678
2679 CORO_THROW = 0;
2680 sv_setsv (ERRSV, exception);
2681 croak (0);
2682 }
2683
1844 /* return value handling - mostly like entersub */ 2684 /* return value handling - mostly like entersub */
1845 /* make sure we put something on the stack in scalar context */ 2685 /* make sure we put something on the stack in scalar context */
1846 if (GIMME_V == G_SCALAR) 2686 if (GIMME_V == G_SCALAR
2687 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1847 { 2688 {
1848 dSP; 2689 dSP;
1849 SV **bot = PL_stack_base + checkmark; 2690 SV **bot = PL_stack_base + checkmark;
1850 2691
1851 if (sp == bot) /* too few, push undef */ 2692 if (sp == bot) /* too few, push undef */
1852 bot [1] = &PL_sv_undef; 2693 bot [1] = &PL_sv_undef;
1853 else if (sp != bot + 1) /* too many, take last one */ 2694 else /* too many, take last one */
1854 bot [1] = *sp; 2695 bot [1] = *sp;
1855 2696
1856 SP = bot + 1; 2697 SP = bot + 1;
1857 2698
1858 PUTBACK; 2699 PUTBACK;
1859 }
1860
1861 /* exception handling */
1862 if (expect_false (coro_throw))
1863 {
1864 SV *exception = sv_2mortal (coro_throw);
1865
1866 coro_throw = 0;
1867 sv_setsv (ERRSV, exception);
1868 croak (0);
1869 } 2700 }
1870 2701
1871 return NORMAL; 2702 return NORMAL;
1872} 2703}
1873 2704
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2732 if (PL_op->op_flags & OPf_STACKED)
1902 { 2733 {
1903 if (items > slf_arga) 2734 if (items > slf_arga)
1904 { 2735 {
1905 slf_arga = items; 2736 slf_arga = items;
1906 free (slf_argv); 2737 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2738 New (0, slf_argv, slf_arga, SV *);
1908 } 2739 }
1909 2740
1910 slf_argc = items; 2741 slf_argc = items;
1911 2742
1912 for (i = 0; i < items; ++i) 2743 for (i = 0; i < items; ++i)
… …
1914 } 2745 }
1915 else 2746 else
1916 slf_argc = 0; 2747 slf_argc = 0;
1917 2748
1918 PL_op->op_ppaddr = pp_slf; 2749 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2750 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2751
1921 PL_op = (OP *)&slf_restore; 2752 PL_op = (OP *)&slf_restore;
2753}
2754
2755/*****************************************************************************/
2756/* dynamic wind */
2757
2758static void
2759on_enterleave_call (pTHX_ SV *cb)
2760{
2761 dSP;
2762
2763 PUSHSTACK;
2764
2765 PUSHMARK (SP);
2766 PUTBACK;
2767 call_sv (cb, G_VOID | G_DISCARD);
2768 SPAGAIN;
2769
2770 POPSTACK;
2771}
2772
2773static SV *
2774coro_avp_pop_and_free (pTHX_ AV **avp)
2775{
2776 AV *av = *avp;
2777 SV *res = av_pop (av);
2778
2779 if (AvFILLp (av) < 0)
2780 {
2781 *avp = 0;
2782 SvREFCNT_dec (av);
2783 }
2784
2785 return res;
2786}
2787
2788static void
2789coro_pop_on_enter (pTHX_ void *coro)
2790{
2791 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2792 SvREFCNT_dec (cb);
2793}
2794
2795static void
2796coro_pop_on_leave (pTHX_ void *coro)
2797{
2798 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2799 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2800}
1923 2801
1924/*****************************************************************************/ 2802/*****************************************************************************/
1925/* PerlIO::cede */ 2803/* PerlIO::cede */
1926 2804
… …
1928{ 2806{
1929 PerlIOBuf base; 2807 PerlIOBuf base;
1930 NV next, every; 2808 NV next, every;
1931} PerlIOCede; 2809} PerlIOCede;
1932 2810
1933static IV 2811static IV ecb_cold
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2812PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{ 2813{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2814 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937 2815
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2816 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every; 2817 self->next = nvtime () + self->every;
1940 2818
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2819 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942} 2820}
1943 2821
1944static SV * 2822static SV * ecb_cold
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2823PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{ 2824{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2825 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948 2826
1949 return newSVnv (self->every); 2827 return newSVnv (self->every);
… …
1995 PerlIOBuf_get_cnt, 2873 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2874 PerlIOBuf_set_ptrcnt,
1997}; 2875};
1998 2876
1999/*****************************************************************************/ 2877/*****************************************************************************/
2878/* Coro::Semaphore & Coro::Signal */
2879
2880static SV *
2881coro_waitarray_new (pTHX_ int count)
2882{
2883 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2884 AV *av = newAV ();
2885 SV **ary;
2886
2887 /* unfortunately, building manually saves memory */
2888 Newx (ary, 2, SV *);
2889 AvALLOC (av) = ary;
2890#if PERL_VERSION_ATLEAST (5,10,0)
2891 AvARRAY (av) = ary;
2892#else
2893 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2894 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2895 SvPVX ((SV *)av) = (char *)ary;
2896#endif
2897 AvMAX (av) = 1;
2898 AvFILLp (av) = 0;
2899 ary [0] = newSViv (count);
2900
2901 return newRV_noinc ((SV *)av);
2902}
2903
2000/* Coro::Semaphore */ 2904/* semaphore */
2001 2905
2002static void 2906static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2907coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{ 2908{
2005 SV *count_sv = AvARRAY (av)[0]; 2909 SV *count_sv = AvARRAY (av)[0];
… …
2017 AvARRAY (av)[0] = AvARRAY (av)[1]; 2921 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv; 2922 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av); 2923 cb = av_shift (av);
2020 2924
2021 if (SvOBJECT (cb)) 2925 if (SvOBJECT (cb))
2926 {
2022 api_ready (aTHX_ cb); 2927 api_ready (aTHX_ cb);
2023 else 2928 --count;
2024 croak ("callbacks not yet supported"); 2929 }
2930 else if (SvTYPE (cb) == SVt_PVCV)
2931 {
2932 dSP;
2933 PUSHMARK (SP);
2934 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2935 PUTBACK;
2936 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2937 }
2025 2938
2026 SvREFCNT_dec (cb); 2939 SvREFCNT_dec (cb);
2027
2028 --count;
2029 } 2940 }
2030} 2941}
2031 2942
2032static void 2943static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2944coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2034{ 2945{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2946 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2947 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2037} 2948}
2038 2949
2039static int 2950static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2951slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2041{ 2952{
2042 AV *av = (AV *)frame->data; 2953 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0]; 2954 SV *count_sv = AvARRAY (av)[0];
2955 SV *coro_hv = SvRV (coro_current);
2044 2956
2957 /* if we are about to throw, don't actually acquire the lock, just throw */
2958 if (CORO_THROW)
2959 return 0;
2045 if (SvIVX (count_sv) > 0) 2960 else if (SvIVX (count_sv) > 0)
2046 { 2961 {
2047 SvSTATE_current->on_destroy = 0; 2962 frame->destroy = 0;
2963
2964 if (acquire)
2048 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2965 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2966 else
2967 coro_semaphore_adjust (aTHX_ av, 0);
2968
2049 return 0; 2969 return 0;
2050 } 2970 }
2051 else 2971 else
2052 { 2972 {
2053 int i; 2973 int i;
2054 /* if we were woken up but can't down, we look through the whole */ 2974 /* if we were woken up but can't down, we look through the whole */
2055 /* waiters list and only add us if we aren't in there already */ 2975 /* waiters list and only add us if we aren't in there already */
2056 /* this avoids some degenerate memory usage cases */ 2976 /* this avoids some degenerate memory usage cases */
2057 2977 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2058 for (i = 1; i <= AvFILLp (av); ++i)
2059 if (AvARRAY (av)[i] == SvRV (coro_current)) 2978 if (AvARRAY (av)[i] == coro_hv)
2060 return 1; 2979 return 1;
2061 2980
2062 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2981 av_push (av, SvREFCNT_inc (coro_hv));
2063 return 1; 2982 return 1;
2064 } 2983 }
2065} 2984}
2066 2985
2067static void 2986static int
2987slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2988{
2989 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2990}
2991
2992static int
2993slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2994{
2995 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2996}
2997
2998static void
2068slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2999slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{ 3000{
2070 AV *av = (AV *)SvRV (arg [0]); 3001 AV *av = (AV *)SvRV (arg [0]);
2071 3002
2072 if (SvIVX (AvARRAY (av)[0]) > 0) 3003 if (SvIVX (AvARRAY (av)[0]) > 0)
2073 { 3004 {
2074 frame->data = (void *)av; 3005 frame->data = (void *)av;
2075 frame->prepare = prepare_nop; 3006 frame->prepare = prepare_nop;
2076 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2077 } 3007 }
2078 else 3008 else
2079 { 3009 {
2080 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3010 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2081 3011
2082 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3012 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2083 frame->prepare = prepare_schedule; 3013 frame->prepare = prepare_schedule;
2084
2085 /* to avoid race conditions when a woken-up coro gets terminated */ 3014 /* to avoid race conditions when a woken-up coro gets terminated */
2086 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3015 /* we arrange for a temporary on_destroy that calls adjust (0) */
2087 assert (!SvSTATE_current->on_destroy);//D
2088 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3016 frame->destroy = coro_semaphore_destroy;
2089 } 3017 }
3018}
2090 3019
3020static void
3021slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3022{
3023 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2091 frame->check = slf_check_semaphore_down; 3024 frame->check = slf_check_semaphore_down;
2092
2093} 3025}
2094 3026
2095/*****************************************************************************/ 3027static void
2096/* gensub: simple closure generation utility */ 3028slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097
2098#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2099
2100/* create a closure from XS, returns a code reference */
2101/* the arg can be accessed via GENSUB_ARG from the callback */
2102/* the callback must use dXSARGS/XSRETURN */
2103static SV *
2104gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2105{ 3029{
2106 CV *cv = (CV *)newSV (0); 3030 if (items >= 2)
3031 {
3032 /* callback form */
3033 AV *av = (AV *)SvRV (arg [0]);
3034 SV *cb_cv = s_get_cv_croak (arg [1]);
2107 3035
2108 sv_upgrade ((SV *)cv, SVt_PVCV); 3036 av_push (av, SvREFCNT_inc_NN (cb_cv));
2109 3037
2110 CvANON_on (cv); 3038 if (SvIVX (AvARRAY (av)[0]) > 0)
2111 CvISXSUB_on (cv); 3039 coro_semaphore_adjust (aTHX_ av, 0);
2112 CvXSUB (cv) = xsub;
2113 GENSUB_ARG = arg;
2114 3040
2115 return newRV_noinc ((SV *)cv); 3041 frame->prepare = prepare_nop;
3042 frame->check = slf_check_nop;
3043 }
3044 else
3045 {
3046 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3047 frame->check = slf_check_semaphore_wait;
3048 }
3049}
3050
3051/* signal */
3052
3053static void
3054coro_signal_wake (pTHX_ AV *av, int count)
3055{
3056 SvIVX (AvARRAY (av)[0]) = 0;
3057
3058 /* now signal count waiters */
3059 while (count > 0 && AvFILLp (av) > 0)
3060 {
3061 SV *cb;
3062
3063 /* swap first two elements so we can shift a waiter */
3064 cb = AvARRAY (av)[0];
3065 AvARRAY (av)[0] = AvARRAY (av)[1];
3066 AvARRAY (av)[1] = cb;
3067
3068 cb = av_shift (av);
3069
3070 if (SvTYPE (cb) == SVt_PVCV)
3071 {
3072 dSP;
3073 PUSHMARK (SP);
3074 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3075 PUTBACK;
3076 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3077 }
3078 else
3079 {
3080 api_ready (aTHX_ cb);
3081 sv_setiv (cb, 0); /* signal waiter */
3082 }
3083
3084 SvREFCNT_dec (cb);
3085
3086 --count;
3087 }
3088}
3089
3090static int
3091slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3092{
3093 /* if we are about to throw, also stop waiting */
3094 return SvROK ((SV *)frame->data) && !CORO_THROW;
3095}
3096
3097static void
3098slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3099{
3100 AV *av = (AV *)SvRV (arg [0]);
3101
3102 if (items >= 2)
3103 {
3104 SV *cb_cv = s_get_cv_croak (arg [1]);
3105 av_push (av, SvREFCNT_inc_NN (cb_cv));
3106
3107 if (SvIVX (AvARRAY (av)[0]))
3108 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3109
3110 frame->prepare = prepare_nop;
3111 frame->check = slf_check_nop;
3112 }
3113 else if (SvIVX (AvARRAY (av)[0]))
3114 {
3115 SvIVX (AvARRAY (av)[0]) = 0;
3116 frame->prepare = prepare_nop;
3117 frame->check = slf_check_nop;
3118 }
3119 else
3120 {
3121 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3122
3123 av_push (av, waiter);
3124
3125 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3126 frame->prepare = prepare_schedule;
3127 frame->check = slf_check_signal_wait;
3128 }
2116} 3129}
2117 3130
2118/*****************************************************************************/ 3131/*****************************************************************************/
2119/* Coro::AIO */ 3132/* Coro::AIO */
2120 3133
… …
2131 3144
2132static void 3145static void
2133coro_aio_callback (pTHX_ CV *cv) 3146coro_aio_callback (pTHX_ CV *cv)
2134{ 3147{
2135 dXSARGS; 3148 dXSARGS;
2136 AV *state = (AV *)GENSUB_ARG; 3149 AV *state = (AV *)S_GENSUB_ARG;
2137 SV *coro = av_pop (state); 3150 SV *coro = av_pop (state);
2138 SV *data_sv = newSV (sizeof (struct io_state)); 3151 SV *data_sv = newSV (sizeof (struct io_state));
2139 3152
2140 av_extend (state, items); 3153 av_extend (state, items - 1);
2141 3154
2142 sv_upgrade (data_sv, SVt_PV); 3155 sv_upgrade (data_sv, SVt_PV);
2143 SvCUR_set (data_sv, sizeof (struct io_state)); 3156 SvCUR_set (data_sv, sizeof (struct io_state));
2144 SvPOK_only (data_sv); 3157 SvPOK_only (data_sv);
2145 3158
… …
2170static int 3183static int
2171slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3184slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2172{ 3185{
2173 AV *state = (AV *)frame->data; 3186 AV *state = (AV *)frame->data;
2174 3187
3188 /* if we are about to throw, return early */
3189 /* this does not cancel the aio request, but at least */
3190 /* it quickly returns */
3191 if (CORO_THROW)
3192 return 0;
3193
2175 /* one element that is an RV? repeat! */ 3194 /* one element that is an RV? repeat! */
2176 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3195 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2177 return 1; 3196 return 1;
2178 3197
2179 /* restore status */ 3198 /* restore status */
… …
2220 dSP; 3239 dSP;
2221 3240
2222 static SV *prio_cv; 3241 static SV *prio_cv;
2223 static SV *prio_sv; 3242 static SV *prio_sv;
2224 3243
2225 if (expect_false (!prio_cv)) 3244 if (ecb_expect_false (!prio_cv))
2226 { 3245 {
2227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3246 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2228 prio_sv = newSViv (0); 3247 prio_sv = newSViv (0);
2229 } 3248 }
2230 3249
… …
2249 3268
2250 for (i = 0; i < items; ++i) 3269 for (i = 0; i < items; ++i)
2251 PUSHs (arg [i]); 3270 PUSHs (arg [i]);
2252 3271
2253 /* now push the callback closure */ 3272 /* now push the callback closure */
2254 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3273 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2255 3274
2256 /* now call the AIO function - we assume our request is uncancelable */ 3275 /* now call the AIO function - we assume our request is uncancelable */
2257 PUTBACK; 3276 PUTBACK;
2258 call_sv ((SV *)req, G_VOID | G_DISCARD); 3277 call_sv ((SV *)req, G_VOID | G_DISCARD);
2259 } 3278 }
2260 3279
2261 /* now that the requets is going, we loop toll we have a result */ 3280 /* now that the request is going, we loop till we have a result */
2262 frame->data = (void *)state; 3281 frame->data = (void *)state;
2263 frame->prepare = prepare_schedule; 3282 frame->prepare = prepare_schedule;
2264 frame->check = slf_check_aio_req; 3283 frame->check = slf_check_aio_req;
2265} 3284}
2266 3285
… …
2273 3292
2274 XSRETURN_EMPTY; 3293 XSRETURN_EMPTY;
2275} 3294}
2276 3295
2277/*****************************************************************************/ 3296/*****************************************************************************/
3297
3298#if CORO_CLONE
3299# include "clone.c"
3300#endif
3301
3302/*****************************************************************************/
3303
3304static SV *
3305coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3306{
3307 SV *coro_sv;
3308 struct coro *coro;
3309 MAGIC *mg;
3310 HV *hv;
3311 SV *cb;
3312 int i;
3313
3314 if (argc > 0)
3315 {
3316 cb = s_get_cv_croak (argv [0]);
3317
3318 if (!is_coro)
3319 {
3320 if (CvISXSUB (cb))
3321 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3322
3323 if (!CvROOT (cb))
3324 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3325 }
3326 }
3327
3328 Newz (0, coro, 1, struct coro);
3329 coro->args = newAV ();
3330 coro->flags = CF_NEW;
3331
3332 if (coro_first) coro_first->prev = coro;
3333 coro->next = coro_first;
3334 coro_first = coro;
3335
3336 coro->hv = hv = newHV ();
3337 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3338 mg->mg_flags |= MGf_DUP;
3339 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3340
3341 if (argc > 0)
3342 {
3343 av_extend (coro->args, argc + is_coro - 1);
3344
3345 if (is_coro)
3346 {
3347 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3348 cb = (SV *)cv_coro_run;
3349 }
3350
3351 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3352
3353 for (i = 1; i < argc; i++)
3354 av_push (coro->args, newSVsv (argv [i]));
3355 }
3356
3357 return coro_sv;
3358}
3359
3360#ifndef __cplusplus
3361ecb_cold XS(boot_Coro__State);
3362#endif
3363
3364#if CORO_JIT
3365
3366static void ecb_noinline ecb_cold
3367pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3368{
3369 dSP;
3370 AV *av = newAV ();
3371
3372 av_store (av, 3, newSVuv (d));
3373 av_store (av, 2, newSVuv (c));
3374 av_store (av, 1, newSVuv (b));
3375 av_store (av, 0, newSVuv (a));
3376
3377 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3378
3379 PUTBACK;
3380}
3381
3382static void ecb_noinline ecb_cold
3383jit_init (pTHX)
3384{
3385 dSP;
3386 SV *load, *save;
3387 char *map_base;
3388 char *load_ptr, *save_ptr;
3389 STRLEN load_len, save_len, map_len;
3390 int count;
3391
3392 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3393
3394 PUSHMARK (SP);
3395#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3396# include "state.h"
3397#undef VARx
3398 count = call_pv ("Coro::State::_jit", G_ARRAY);
3399 SPAGAIN;
3400
3401 save = POPs; save_ptr = SvPVbyte (save, save_len);
3402 load = POPs; load_ptr = SvPVbyte (load, load_len);
3403
3404 map_len = load_len + save_len + 16;
3405
3406 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3407
3408 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3409
3410 load_perl_slots = (load_save_perl_slots_type)map_base;
3411 memcpy (map_base, load_ptr, load_len);
3412
3413 map_base += (load_len + 15) & ~15;
3414
3415 save_perl_slots = (load_save_perl_slots_type)map_base;
3416 memcpy (map_base, save_ptr, save_len);
3417
3418 /* we are good citizens and try to make the page read-only, so the evil evil */
3419 /* hackers might have it a bit more difficult */
3420 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3421
3422 PUTBACK;
3423 eval_pv ("undef &Coro::State::_jit", 1);
3424}
3425
3426#endif
2278 3427
2279MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3428MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2280 3429
2281PROTOTYPES: DISABLE 3430PROTOTYPES: DISABLE
2282 3431
… …
2287 coro_thx = PERL_GET_CONTEXT; 3436 coro_thx = PERL_GET_CONTEXT;
2288# endif 3437# endif
2289#endif 3438#endif
2290 BOOT_PAGESIZE; 3439 BOOT_PAGESIZE;
2291 3440
3441 /* perl defines these to check for existance first, but why it doesn't */
3442 /* just create them one at init time is not clear to me, except for */
3443 /* programs trying to delete them, but... */
3444 /* anyway, we declare this as invalid and make sure they are initialised here */
3445 DEFSV;
3446 ERRSV;
3447
3448 cctx_current = cctx_new_empty ();
3449
2292 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3450 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2293 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3451 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2294 3452
2295 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3453 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2296 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3454 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2315 3473
2316 { 3474 {
2317 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3475 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2318 3476
2319 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3477 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2320 hv_store_ent (PL_custom_op_names, slf, 3478 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2321 newSVpv ("coro_slf", 0), 0);
2322 3479
2323 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3480 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2324 hv_store_ent (PL_custom_op_descs, slf, 3481 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2325 newSVpv ("coro schedule like function", 0), 0);
2326 } 3482 }
2327 3483
2328 coroapi.ver = CORO_API_VERSION; 3484 coroapi.ver = CORO_API_VERSION;
2329 coroapi.rev = CORO_API_REVISION; 3485 coroapi.rev = CORO_API_REVISION;
2330 3486
… …
2335 coroapi.prepare_nop = prepare_nop; 3491 coroapi.prepare_nop = prepare_nop;
2336 coroapi.prepare_schedule = prepare_schedule; 3492 coroapi.prepare_schedule = prepare_schedule;
2337 coroapi.prepare_cede = prepare_cede; 3493 coroapi.prepare_cede = prepare_cede;
2338 coroapi.prepare_cede_notself = prepare_cede_notself; 3494 coroapi.prepare_cede_notself = prepare_cede_notself;
2339 3495
2340 { 3496 time_init (aTHX);
2341 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2342 3497
2343 if (!svp) croak ("Time::HiRes is required");
2344 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2345
2346 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2347 }
2348
2349 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3498 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3499#if CORO_JIT
3500 PUTBACK;
3501 jit_init (aTHX);
3502 SPAGAIN;
3503#endif
2350} 3504}
2351 3505
2352SV * 3506SV *
2353new (char *klass, ...) 3507new (SV *klass, ...)
3508 ALIAS:
3509 Coro::new = 1
2354 CODE: 3510 CODE:
2355{ 3511 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2356 struct coro *coro; 3512 OUTPUT:
2357 MAGIC *mg;
2358 HV *hv;
2359 int i;
2360
2361 Newz (0, coro, 1, struct coro);
2362 coro->args = newAV ();
2363 coro->flags = CF_NEW;
2364
2365 if (coro_first) coro_first->prev = coro;
2366 coro->next = coro_first;
2367 coro_first = coro;
2368
2369 coro->hv = hv = newHV ();
2370 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2371 mg->mg_flags |= MGf_DUP;
2372 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2373
2374 av_extend (coro->args, items - 1);
2375 for (i = 1; i < items; i++)
2376 av_push (coro->args, newSVsv (ST (i)));
2377}
2378 OUTPUT:
2379 RETVAL 3513 RETVAL
2380 3514
2381void 3515void
2382transfer (...) 3516transfer (...)
2383 PROTOTYPE: $$ 3517 PROTOTYPE: $$
2384 CODE: 3518 CODE:
2385 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3519 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2386 3520
2387bool
2388_destroy (SV *coro_sv)
2389 CODE:
2390 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2391 OUTPUT:
2392 RETVAL
2393
2394void 3521void
2395_exit (int code) 3522_exit (int code)
2396 PROTOTYPE: $ 3523 PROTOTYPE: $
2397 CODE: 3524 CODE:
2398 _exit (code); 3525 _exit (code);
3526
3527SV *
3528clone (Coro::State coro)
3529 CODE:
3530{
3531#if CORO_CLONE
3532 struct coro *ncoro = coro_clone (aTHX_ coro);
3533 MAGIC *mg;
3534 /* TODO: too much duplication */
3535 ncoro->hv = newHV ();
3536 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3537 mg->mg_flags |= MGf_DUP;
3538 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3539#else
3540 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3541#endif
3542}
3543 OUTPUT:
3544 RETVAL
2399 3545
2400int 3546int
2401cctx_stacksize (int new_stacksize = 0) 3547cctx_stacksize (int new_stacksize = 0)
2402 PROTOTYPE: ;$ 3548 PROTOTYPE: ;$
2403 CODE: 3549 CODE:
… …
2453 eval = 1 3599 eval = 1
2454 CODE: 3600 CODE:
2455{ 3601{
2456 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3602 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2457 { 3603 {
2458 struct coro temp; 3604 struct coro *current = SvSTATE_current;
3605 struct CoroSLF slf_save;
2459 3606
2460 if (!(coro->flags & CF_RUNNING)) 3607 if (current != coro)
2461 { 3608 {
2462 PUTBACK; 3609 PUTBACK;
2463 save_perl (aTHX_ &temp); 3610 save_perl (aTHX_ current);
2464 load_perl (aTHX_ coro); 3611 load_perl (aTHX_ coro);
3612 /* the coro is most likely in an active SLF call.
3613 * while not strictly required (the code we execute is
3614 * not allowed to call any SLF functions), it's cleaner
3615 * to reinitialise the slf_frame and restore it later.
3616 * This might one day allow us to actually do SLF calls
3617 * from code executed here.
3618 */
3619 slf_save = slf_frame;
3620 slf_frame.prepare = 0;
3621 SPAGAIN;
2465 } 3622 }
2466 3623
2467 {
2468 dSP;
2469 ENTER;
2470 SAVETMPS;
2471 PUTBACK;
2472 PUSHSTACK; 3624 PUSHSTACK;
3625
2473 PUSHMARK (SP); 3626 PUSHMARK (SP);
3627 PUTBACK;
2474 3628
2475 if (ix) 3629 if (ix)
2476 eval_sv (coderef, 0); 3630 eval_sv (coderef, 0);
2477 else 3631 else
2478 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3632 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2479 3633
2480 POPSTACK; 3634 POPSTACK;
2481 SPAGAIN; 3635 SPAGAIN;
2482 FREETMPS;
2483 LEAVE;
2484 PUTBACK;
2485 }
2486 3636
2487 if (!(coro->flags & CF_RUNNING)) 3637 if (current != coro)
2488 { 3638 {
3639 PUTBACK;
3640 slf_frame = slf_save;
2489 save_perl (aTHX_ coro); 3641 save_perl (aTHX_ coro);
2490 load_perl (aTHX_ &temp); 3642 load_perl (aTHX_ current);
2491 SPAGAIN; 3643 SPAGAIN;
2492 } 3644 }
2493 } 3645 }
2494} 3646}
2495 3647
… …
2498 PROTOTYPE: $ 3650 PROTOTYPE: $
2499 ALIAS: 3651 ALIAS:
2500 is_ready = CF_READY 3652 is_ready = CF_READY
2501 is_running = CF_RUNNING 3653 is_running = CF_RUNNING
2502 is_new = CF_NEW 3654 is_new = CF_NEW
2503 is_destroyed = CF_DESTROYED 3655 is_destroyed = CF_ZOMBIE
3656 is_zombie = CF_ZOMBIE
3657 is_suspended = CF_SUSPENDED
2504 CODE: 3658 CODE:
2505 RETVAL = boolSV (coro->flags & ix); 3659 RETVAL = boolSV (coro->flags & ix);
2506 OUTPUT: 3660 OUTPUT:
2507 RETVAL 3661 RETVAL
2508 3662
2509void 3663void
2510throw (Coro::State self, SV *throw = &PL_sv_undef) 3664throw (Coro::State self, SV *exception = &PL_sv_undef)
2511 PROTOTYPE: $;$ 3665 PROTOTYPE: $;$
2512 CODE: 3666 CODE:
2513{ 3667{
2514 struct coro *current = SvSTATE_current; 3668 struct coro *current = SvSTATE_current;
2515 SV **throwp = self == current ? &coro_throw : &self->throw; 3669 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2516 SvREFCNT_dec (*throwp); 3670 SvREFCNT_dec (*exceptionp);
2517 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3671 SvGETMAGIC (exception);
3672 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2518} 3673}
2519 3674
2520void 3675void
2521api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3676api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2522 PROTOTYPE: $;$ 3677 PROTOTYPE: $;$
… …
2524 3679
2525SV * 3680SV *
2526has_cctx (Coro::State coro) 3681has_cctx (Coro::State coro)
2527 PROTOTYPE: $ 3682 PROTOTYPE: $
2528 CODE: 3683 CODE:
2529 RETVAL = boolSV (!!coro->cctx); 3684 /* maybe manage the running flag differently */
3685 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2530 OUTPUT: 3686 OUTPUT:
2531 RETVAL 3687 RETVAL
2532 3688
2533int 3689int
2534is_traced (Coro::State coro) 3690is_traced (Coro::State coro)
… …
2554 3710
2555void 3711void
2556force_cctx () 3712force_cctx ()
2557 PROTOTYPE: 3713 PROTOTYPE:
2558 CODE: 3714 CODE:
2559 SvSTATE_current->cctx->idle_sp = 0; 3715 cctx_current->idle_sp = 0;
2560 3716
2561void 3717void
2562swap_defsv (Coro::State self) 3718swap_defsv (Coro::State self)
2563 PROTOTYPE: $ 3719 PROTOTYPE: $
2564 ALIAS: 3720 ALIAS:
… …
2572 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3728 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2573 3729
2574 SV *tmp = *src; *src = *dst; *dst = tmp; 3730 SV *tmp = *src; *src = *dst; *dst = tmp;
2575 } 3731 }
2576 3732
3733void
3734cancel (Coro::State self)
3735 CODE:
3736 coro_state_destroy (aTHX_ self);
3737
3738SV *
3739enable_times (int enabled = enable_times)
3740 CODE:
3741{
3742 RETVAL = boolSV (enable_times);
3743
3744 if (enabled != enable_times)
3745 {
3746 enable_times = enabled;
3747
3748 coro_times_update ();
3749 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3750 }
3751}
3752 OUTPUT:
3753 RETVAL
3754
3755void
3756times (Coro::State self)
3757 PPCODE:
3758{
3759 struct coro *current = SvSTATE (coro_current);
3760
3761 if (ecb_expect_false (current == self))
3762 {
3763 coro_times_update ();
3764 coro_times_add (SvSTATE (coro_current));
3765 }
3766
3767 EXTEND (SP, 2);
3768 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3769 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3770
3771 if (ecb_expect_false (current == self))
3772 coro_times_sub (SvSTATE (coro_current));
3773}
3774
3775void
3776swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3777 CODE:
3778{
3779 struct coro *current = SvSTATE_current;
3780
3781 if (current == coro)
3782 SWAP_SVS (current);
3783
3784 if (!coro->swap_sv)
3785 coro->swap_sv = newAV ();
3786
3787 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3788 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3789
3790 if (current == coro)
3791 SWAP_SVS (current);
3792}
3793
2577 3794
2578MODULE = Coro::State PACKAGE = Coro 3795MODULE = Coro::State PACKAGE = Coro
2579 3796
2580BOOT: 3797BOOT:
2581{ 3798{
2582 int i;
2583
2584 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2585 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3799 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2586 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3800 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2587 3801 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2588 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3802 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2589 SvREADONLY_on (coro_current); 3803 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3804 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3805 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3806 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2590 3807
3808 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3809 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3810 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3811 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3812
2591 coro_stash = gv_stashpv ("Coro", TRUE); 3813 coro_stash = gv_stashpv ("Coro", TRUE);
2592 3814
2593 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3815 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2594 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3816 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2595 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3817 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2596 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3818 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2597 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3819 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2598 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3820 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2599
2600 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2601 coro_ready[i] = newAV ();
2602 3821
2603 { 3822 {
2604 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3823 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2605 3824
2606 coroapi.schedule = api_schedule; 3825 coroapi.schedule = api_schedule;
3826 coroapi.schedule_to = api_schedule_to;
2607 coroapi.cede = api_cede; 3827 coroapi.cede = api_cede;
2608 coroapi.cede_notself = api_cede_notself; 3828 coroapi.cede_notself = api_cede_notself;
2609 coroapi.ready = api_ready; 3829 coroapi.ready = api_ready;
2610 coroapi.is_ready = api_is_ready; 3830 coroapi.is_ready = api_is_ready;
2611 coroapi.nready = coro_nready; 3831 coroapi.nready = coro_nready;
2612 coroapi.current = coro_current; 3832 coroapi.current = coro_current;
2613 3833
2614 GCoroAPI = &coroapi; 3834 /*GCoroAPI = &coroapi;*/
2615 sv_setiv (sv, (IV)&coroapi); 3835 sv_setiv (sv, (IV)&coroapi);
2616 SvREADONLY_on (sv); 3836 SvREADONLY_on (sv);
2617 } 3837 }
2618} 3838}
3839
3840SV *
3841async (...)
3842 PROTOTYPE: &@
3843 CODE:
3844 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3845 api_ready (aTHX_ RETVAL);
3846 OUTPUT:
3847 RETVAL
3848
3849void
3850_destroy (Coro::State coro)
3851 CODE:
3852 /* used by the manager thread */
3853 coro_state_destroy (aTHX_ coro);
3854
3855void
3856on_destroy (Coro::State coro, SV *cb)
3857 CODE:
3858 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3859
3860void
3861join (...)
3862 CODE:
3863 CORO_EXECUTE_SLF_XS (slf_init_join);
3864
3865void
3866terminate (...)
3867 CODE:
3868 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3869
3870void
3871cancel (...)
3872 CODE:
3873 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3874
3875int
3876safe_cancel (Coro::State self, ...)
3877 C_ARGS: aTHX_ self, &ST (1), items - 1
2619 3878
2620void 3879void
2621schedule (...) 3880schedule (...)
2622 CODE: 3881 CODE:
2623 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3882 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3883
3884void
3885schedule_to (...)
3886 CODE:
3887 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3888
3889void
3890cede_to (...)
3891 CODE:
3892 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2624 3893
2625void 3894void
2626cede (...) 3895cede (...)
2627 CODE: 3896 CODE:
2628 CORO_EXECUTE_SLF_XS (slf_init_cede); 3897 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2642void 3911void
2643_set_readyhook (SV *hook) 3912_set_readyhook (SV *hook)
2644 PROTOTYPE: $ 3913 PROTOTYPE: $
2645 CODE: 3914 CODE:
2646 SvREFCNT_dec (coro_readyhook); 3915 SvREFCNT_dec (coro_readyhook);
3916 SvGETMAGIC (hook);
3917 if (SvOK (hook))
3918 {
2647 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3919 coro_readyhook = newSVsv (hook);
3920 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3921 }
3922 else
3923 {
3924 coro_readyhook = 0;
3925 CORO_READYHOOK = 0;
3926 }
2648 3927
2649int 3928int
2650prio (Coro::State coro, int newprio = 0) 3929prio (Coro::State coro, int newprio = 0)
2651 PROTOTYPE: $;$ 3930 PROTOTYPE: $;$
2652 ALIAS: 3931 ALIAS:
… …
2658 if (items > 1) 3937 if (items > 1)
2659 { 3938 {
2660 if (ix) 3939 if (ix)
2661 newprio = coro->prio - newprio; 3940 newprio = coro->prio - newprio;
2662 3941
2663 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3942 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2664 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3943 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2665 3944
2666 coro->prio = newprio; 3945 coro->prio = newprio;
2667 } 3946 }
2668} 3947}
2669 OUTPUT: 3948 OUTPUT:
… …
2683 CODE: 3962 CODE:
2684 RETVAL = coro_nready; 3963 RETVAL = coro_nready;
2685 OUTPUT: 3964 OUTPUT:
2686 RETVAL 3965 RETVAL
2687 3966
2688# for async_pool speedup
2689void 3967void
2690_pool_1 (SV *cb) 3968suspend (Coro::State self)
3969 PROTOTYPE: $
2691 CODE: 3970 CODE:
2692{ 3971 self->flags |= CF_SUSPENDED;
2693 HV *hv = (HV *)SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv ((SV *)hv);
2695 AV *defav = GvAV (PL_defgv);
2696 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2697 AV *invoke_av;
2698 int i, len;
2699 3972
2700 if (!invoke) 3973void
3974resume (Coro::State self)
3975 PROTOTYPE: $
3976 CODE:
3977 self->flags &= ~CF_SUSPENDED;
3978
3979void
3980_pool_handler (...)
3981 CODE:
3982 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3983
3984void
3985async_pool (SV *cv, ...)
3986 PROTOTYPE: &@
3987 PPCODE:
3988{
3989 HV *hv = (HV *)av_pop (av_async_pool);
3990 AV *av = newAV ();
3991 SV *cb = ST (0);
3992 int i;
3993
3994 av_extend (av, items - 2);
3995 for (i = 1; i < items; ++i)
3996 av_push (av, SvREFCNT_inc_NN (ST (i)));
3997
3998 if ((SV *)hv == &PL_sv_undef)
2701 { 3999 {
2702 SV *old = PL_diehook; 4000 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2703 PL_diehook = 0; 4001 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2704 SvREFCNT_dec (old); 4002 SvREFCNT_dec (sv);
2705 croak ("\3async_pool terminate\2\n");
2706 } 4003 }
2707 4004
2708 SvREFCNT_dec (coro->saved_deffh);
2709 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2710
2711 hv_store (hv, "desc", sizeof ("desc") - 1,
2712 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2713
2714 invoke_av = (AV *)SvRV (invoke);
2715 len = av_len (invoke_av);
2716
2717 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2718
2719 if (len > 0)
2720 { 4005 {
2721 av_fill (defav, len - 1); 4006 struct coro *coro = SvSTATE_hv (hv);
2722 for (i = 0; i < len; ++i) 4007
2723 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4008 assert (!coro->invoke_cb);
4009 assert (!coro->invoke_av);
4010 coro->invoke_cb = SvREFCNT_inc (cb);
4011 coro->invoke_av = av;
2724 } 4012 }
4013
4014 api_ready (aTHX_ (SV *)hv);
4015
4016 if (GIMME_V != G_VOID)
4017 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4018 else
4019 SvREFCNT_dec (hv);
2725} 4020}
4021
4022SV *
4023rouse_cb ()
4024 PROTOTYPE:
4025 CODE:
4026 RETVAL = coro_new_rouse_cb (aTHX);
4027 OUTPUT:
4028 RETVAL
2726 4029
2727void 4030void
2728_pool_2 (SV *cb) 4031rouse_wait (...)
4032 PROTOTYPE: ;$
4033 PPCODE:
4034 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4035
4036void
4037on_enter (SV *block)
4038 ALIAS:
4039 on_leave = 1
4040 PROTOTYPE: &
2729 CODE: 4041 CODE:
2730{ 4042{
2731 HV *hv = (HV *)SvRV (coro_current);
2732 struct coro *coro = SvSTATE_hv ((SV *)hv); 4043 struct coro *coro = SvSTATE_current;
4044 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2733 4045
2734 sv_setsv (cb, &PL_sv_undef); 4046 block = s_get_cv_croak (block);
2735 4047
2736 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4048 if (!*avp)
2737 coro->saved_deffh = 0; 4049 *avp = newAV ();
2738 4050
2739 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4051 av_push (*avp, SvREFCNT_inc (block));
2740 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2741 {
2742 SV *old = PL_diehook;
2743 PL_diehook = 0;
2744 SvREFCNT_dec (old);
2745 croak ("\3async_pool terminate\2\n");
2746 }
2747 4052
2748 av_clear (GvAV (PL_defgv)); 4053 if (!ix)
2749 hv_store (hv, "desc", sizeof ("desc") - 1, 4054 on_enterleave_call (aTHX_ block);
2750 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2751 4055
2752 coro->prio = 0; 4056 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2753 4057 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2754 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4058 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2755 api_trace (aTHX_ coro_current, 0);
2756
2757 av_push (av_async_pool, newSVsv (coro_current));
2758} 4059}
2759 4060
2760 4061
2761MODULE = Coro::State PACKAGE = PerlIO::cede 4062MODULE = Coro::State PACKAGE = PerlIO::cede
2762 4063
… …
2765 4066
2766 4067
2767MODULE = Coro::State PACKAGE = Coro::Semaphore 4068MODULE = Coro::State PACKAGE = Coro::Semaphore
2768 4069
2769SV * 4070SV *
2770new (SV *klass, SV *count_ = 0) 4071new (SV *klass, SV *count = 0)
2771 CODE: 4072 CODE:
2772{ 4073{
2773 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4074 int semcnt = 1;
2774 AV *av = newAV ();
2775 SV **ary;
2776 4075
2777 /* unfortunately, building manually saves memory */ 4076 if (count)
2778 Newx (ary, 2, SV *); 4077 {
2779 AvALLOC (av) = ary; 4078 SvGETMAGIC (count);
2780 AvARRAY (av) = ary;
2781 AvMAX (av) = 1;
2782 AvFILLp (av) = 0;
2783 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2784 4079
2785 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4080 if (SvOK (count))
4081 semcnt = SvIV (count);
4082 }
4083
4084 RETVAL = sv_bless (
4085 coro_waitarray_new (aTHX_ semcnt),
4086 GvSTASH (CvGV (cv))
4087 );
2786} 4088}
4089 OUTPUT:
4090 RETVAL
4091
4092# helper for Coro::Channel and others
4093SV *
4094_alloc (int count)
4095 CODE:
4096 RETVAL = coro_waitarray_new (aTHX_ count);
2787 OUTPUT: 4097 OUTPUT:
2788 RETVAL 4098 RETVAL
2789 4099
2790SV * 4100SV *
2791count (SV *self) 4101count (SV *self)
… …
2800 adjust = 1 4110 adjust = 1
2801 CODE: 4111 CODE:
2802 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4112 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2803 4113
2804void 4114void
2805down (SV *self) 4115down (...)
2806 CODE: 4116 CODE:
2807 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4117 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4118
4119void
4120wait (...)
4121 CODE:
4122 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2808 4123
2809void 4124void
2810try (SV *self) 4125try (SV *self)
2811 PPCODE: 4126 PPCODE:
2812{ 4127{
… …
2824 XSRETURN_NO; 4139 XSRETURN_NO;
2825} 4140}
2826 4141
2827void 4142void
2828waiters (SV *self) 4143waiters (SV *self)
2829 CODE: 4144 PPCODE:
2830{ 4145{
2831 AV *av = (AV *)SvRV (self); 4146 AV *av = (AV *)SvRV (self);
4147 int wcount = AvFILLp (av) + 1 - 1;
2832 4148
2833 if (GIMME_V == G_SCALAR) 4149 if (GIMME_V == G_SCALAR)
2834 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4150 XPUSHs (sv_2mortal (newSViv (wcount)));
2835 else 4151 else
2836 { 4152 {
2837 int i; 4153 int i;
2838 EXTEND (SP, AvFILLp (av) + 1 - 1); 4154 EXTEND (SP, wcount);
2839 for (i = 1; i <= AvFILLp (av); ++i) 4155 for (i = 1; i <= wcount; ++i)
2840 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4156 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2841 } 4157 }
2842} 4158}
4159
4160MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4161
4162void
4163_may_delete (SV *sem, int count, unsigned int extra_refs)
4164 PPCODE:
4165{
4166 AV *av = (AV *)SvRV (sem);
4167
4168 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4169 && AvFILLp (av) == 0 /* no waiters, just count */
4170 && SvIV (AvARRAY (av)[0]) == count)
4171 XSRETURN_YES;
4172
4173 XSRETURN_NO;
4174}
4175
4176MODULE = Coro::State PACKAGE = Coro::Signal
4177
4178SV *
4179new (SV *klass)
4180 CODE:
4181 RETVAL = sv_bless (
4182 coro_waitarray_new (aTHX_ 0),
4183 GvSTASH (CvGV (cv))
4184 );
4185 OUTPUT:
4186 RETVAL
4187
4188void
4189wait (...)
4190 CODE:
4191 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4192
4193void
4194broadcast (SV *self)
4195 CODE:
4196{
4197 AV *av = (AV *)SvRV (self);
4198 coro_signal_wake (aTHX_ av, AvFILLp (av));
4199}
4200
4201void
4202send (SV *self)
4203 CODE:
4204{
4205 AV *av = (AV *)SvRV (self);
4206
4207 if (AvFILLp (av))
4208 coro_signal_wake (aTHX_ av, 1);
4209 else
4210 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4211}
4212
4213IV
4214awaited (SV *self)
4215 CODE:
4216 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4217 OUTPUT:
4218 RETVAL
2843 4219
2844 4220
2845MODULE = Coro::State PACKAGE = Coro::AnyEvent 4221MODULE = Coro::State PACKAGE = Coro::AnyEvent
2846 4222
2847BOOT: 4223BOOT:
… …
2875 4251
2876void 4252void
2877_register (char *target, char *proto, SV *req) 4253_register (char *target, char *proto, SV *req)
2878 CODE: 4254 CODE:
2879{ 4255{
2880 HV *st; 4256 SV *req_cv = s_get_cv_croak (req);
2881 GV *gvp;
2882 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2883 /* newXSproto doesn't return the CV on 5.8 */ 4257 /* newXSproto doesn't return the CV on 5.8 */
2884 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4258 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2885 sv_setpv ((SV *)slf_cv, proto); 4259 sv_setpv ((SV *)slf_cv, proto);
2886 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4260 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2887} 4261}
2888 4262
4263MODULE = Coro::State PACKAGE = Coro::Select
4264
4265void
4266patch_pp_sselect ()
4267 CODE:
4268 if (!coro_old_pp_sselect)
4269 {
4270 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4271 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4272 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4273 }
4274
4275void
4276unpatch_pp_sselect ()
4277 CODE:
4278 if (coro_old_pp_sselect)
4279 {
4280 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4281 coro_old_pp_sselect = 0;
4282 }
4283

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