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Comparing Coro/Coro/State.xs (file contents):
Revision 1.359 by root, Mon Jun 29 05:07:19 2009 UTC vs.
Revision 1.411 by root, Mon Jun 13 08:38:15 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp /* deep magic */ 33# define setjmp _setjmp /* deep magic */
22#else 34#else
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) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (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#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
117#endif 70#endif
118 71
119#ifndef CORO_STACKGUARD 72#ifndef CORO_STACKGUARD
… …
135# define STACKLEVEL ((void *)&stacklevel) 88# define STACKLEVEL ((void *)&stacklevel)
136#endif 89#endif
137 90
138#define IN_DESTRUCT PL_dirty 91#define IN_DESTRUCT PL_dirty
139 92
140#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr), (value))
143# define INLINE static inline
144#else
145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
152
153#define NOINLINE attribute ((noinline))
154
155#include "CoroAPI.h" 93#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */ 94#define GCoroAPI (&coroapi) /* very sneaky */
157 95
158#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
159# if CORO_PTHREAD 97# if CORO_PTHREAD
160static void *coro_thx; 98static void *coro_thx;
161# endif 99# endif
162#endif 100#endif
101
102/* used in state.h */
103#define VAR(name,type) VARx(name, PL_ ## name, type)
163 104
164#ifdef __linux 105#ifdef __linux
165# include <time.h> /* for timespec */ 106# include <time.h> /* for timespec */
166# include <syscall.h> /* for SYS_* */ 107# include <syscall.h> /* for SYS_* */
167# ifdef SYS_clock_gettime 108# ifdef SYS_clock_gettime
… …
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
171# endif 112# endif
172#endif 113#endif
173 114
174static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
175 117
176/* we hijack an hopefully unused CV flag for our purposes */ 118/* we hijack an hopefully unused CV flag for our purposes */
177#define CVf_SLF 0x4000 119#define CVf_SLF 0x4000
178static OP *pp_slf (pTHX); 120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
179 122
180static U32 cctx_gen; 123static U32 cctx_gen;
181static size_t cctx_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
182static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
183static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
… …
200static SV *sv_pool_size; 143static SV *sv_pool_size;
201static SV *sv_async_pool_idle; /* description string */ 144static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; /* idle pool */ 145static AV *av_async_pool; /* idle pool */
203static SV *sv_Coro; /* class string */ 146static SV *sv_Coro; /* class string */
204static CV *cv_pool_handler; 147static CV *cv_pool_handler;
205static CV *cv_coro_state_new;
206 148
207/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
208static SV *sv_activity; 150static SV *sv_activity;
209 151
210/* enable processtime/realtime profiling */ 152/* enable processtime/realtime profiling */
211static char profile_times; 153static char enable_times;
212typedef U32 coro_ts[2]; 154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
213 157
214static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
215static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
216 160
217enum { 161enum
162{
218 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
219 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
220 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
221 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
222 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
243 int valgrind_id; 188 int valgrind_id;
244#endif 189#endif
245 unsigned char flags; 190 unsigned char flags;
246} coro_cctx; 191} coro_cctx;
247 192
248coro_cctx *cctx_current; /* the currently running cctx */ 193static coro_cctx *cctx_current; /* the currently running cctx */
249 194
250/*****************************************************************************/ 195/*****************************************************************************/
251 196
197static MGVTBL coro_state_vtbl;
198
252enum { 199enum
200{
253 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
254 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
255 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
256 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
257 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
258}; 207};
259 208
260/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
261typedef struct 210typedef struct
262{ 211{
263 SV *defsv;
264 AV *defav;
265 SV *errsv;
266 SV *irsgv;
267 HV *hinthv;
268#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
269# include "state.h" 213# include "state.h"
270#undef VAR 214#undef VARx
271} perl_slots; 215} perl_slots;
272 216
217/* how many context stack entries do we need for perl_slots */
273#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
274 219
275/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
276struct coro { 221struct coro
222{
277 /* the C coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
278 coro_cctx *cctx; 224 coro_cctx *cctx;
279 225
280 /* ready queue */ 226 /* ready queue */
281 struct coro *next_ready; 227 struct coro *next_ready;
… …
283 /* state data */ 229 /* state data */
284 struct CoroSLF slf_frame; /* saved slf frame */ 230 struct CoroSLF slf_frame; /* saved slf frame */
285 AV *mainstack; 231 AV *mainstack;
286 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
287 233
288 CV *startcv; /* the CV to execute */ 234 CV *startcv; /* the CV to execute */
289 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
290 int refcnt; /* coroutines are refcounted, yes */
291 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
292 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
293 void (*on_destroy)(pTHX_ struct coro *coro);
294 238
295 /* statistics */ 239 /* statistics */
296 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
297 241
298 /* coro process data */ 242 /* coro process data */
299 int prio; 243 int prio;
300 SV *except; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
301 SV *rouse_cb; 245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
302 248
303 /* async_pool */ 249 /* async_pool */
304 SV *saved_deffh; 250 SV *saved_deffh;
305 SV *invoke_cb; 251 SV *invoke_cb;
306 AV *invoke_av; 252 AV *invoke_av;
307 253
308 /* on_enter/on_leave */ 254 /* on_enter/on_leave */
309 AV *on_enter; 255 AV *on_enter;
310 AV *on_leave; 256 AV *on_leave;
311 257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
263
312 /* linked list */ 264 /* linked list */
313 struct coro *next, *prev; 265 struct coro *next, *prev;
314}; 266};
315 267
316typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
317typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
318 270
319/* the following variables are effectively part of the perl context */ 271/* the following variables are effectively part of the perl context */
320/* and get copied between struct coro and these variables */ 272/* and get copied between struct coro and these variables */
321/* the mainr easonw e don't support windows process emulation */ 273/* the main reason we don't support windows process emulation */
322static struct CoroSLF slf_frame; /* the current slf frame */ 274static struct CoroSLF slf_frame; /* the current slf frame */
323 275
324/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
325 277
326#define CORO_PRIO_MAX 3 278#define CORO_PRIO_MAX 3
… …
332 284
333/* for Coro.pm */ 285/* for Coro.pm */
334static SV *coro_current; 286static SV *coro_current;
335static SV *coro_readyhook; 287static SV *coro_readyhook;
336static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
337static CV *cv_coro_run, *cv_coro_terminate; 289static CV *cv_coro_run;
338static struct coro *coro_first; 290static struct coro *coro_first;
339#define coro_nready coroapi.nready 291#define coro_nready coroapi.nready
340 292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 /* APPLE doesn't have HAVE_MMAP though */
297 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
298 #ifndef CORO_JIT_TYPE
299 #if __x86_64 && CORO_JIT_UNIXY
300 #define CORO_JIT_TYPE "amd64-unix"
301 #elif __i386 && CORO_JIT_UNIXY
302 #define CORO_JIT_TYPE "x86-unix"
303 #endif
304 #endif
305#endif
306
307#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
308 #undef CORO_JIT
309#endif
310
311#if CORO_JIT
312 typedef void (*load_save_perl_slots_type)(perl_slots *);
313 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
314#endif
315
316/** Coro::Select ************************************************************/
317
318static OP *(*coro_old_pp_sselect) (pTHX);
319static SV *coro_select_select;
320
321/* horrible hack, but if it works... */
322static OP *
323coro_pp_sselect (pTHX)
324{
325 dSP;
326 PUSHMARK (SP - 4); /* fake argument list */
327 XPUSHs (coro_select_select);
328 PUTBACK;
329
330 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
331 PL_op->op_flags |= OPf_STACKED;
332 PL_op->op_private = 0;
333 return PL_ppaddr [OP_ENTERSUB](aTHX);
334}
335
336/** time stuff **************************************************************/
337
338#ifdef HAS_GETTIMEOFDAY
339
340ECB_INLINE void
341coro_u2time (pTHX_ UV ret[2])
342{
343 struct timeval tv;
344 gettimeofday (&tv, 0);
345
346 ret [0] = tv.tv_sec;
347 ret [1] = tv.tv_usec;
348}
349
350ECB_INLINE double
351coro_nvtime (void)
352{
353 struct timeval tv;
354 gettimeofday (&tv, 0);
355
356 return tv.tv_sec + tv.tv_usec * 1e-6;
357}
358
359ECB_INLINE void
360time_init (pTHX)
361{
362 nvtime = coro_nvtime;
363 u2time = coro_u2time;
364}
365
366#else
367
368ECB_INLINE void
369time_init (pTHX)
370{
371 SV **svp;
372
373 require_pv ("Time/HiRes.pm");
374
375 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
376
377 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
378 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
379
380 nvtime = INT2PTR (double (*)(), SvIV (*svp));
381
382 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
383 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
384}
385
386#endif
387
341/** lowlevel stuff **********************************************************/ 388/** lowlevel stuff **********************************************************/
342 389
343static SV * 390static SV * ecb_noinline
344coro_get_sv (pTHX_ const char *name, int create) 391coro_get_sv (pTHX_ const char *name, int create)
345{ 392{
346#if PERL_VERSION_ATLEAST (5,10,0) 393#if PERL_VERSION_ATLEAST (5,10,0)
347 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 394 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
348 get_sv (name, create); 395 get_sv (name, create);
349#endif 396#endif
350 return get_sv (name, create); 397 return get_sv (name, create);
351} 398}
352 399
353static AV * 400static AV * ecb_noinline
354coro_get_av (pTHX_ const char *name, int create) 401coro_get_av (pTHX_ const char *name, int create)
355{ 402{
356#if PERL_VERSION_ATLEAST (5,10,0) 403#if PERL_VERSION_ATLEAST (5,10,0)
357 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 404 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
358 get_av (name, create); 405 get_av (name, create);
359#endif 406#endif
360 return get_av (name, create); 407 return get_av (name, create);
361} 408}
362 409
363static HV * 410static HV * ecb_noinline
364coro_get_hv (pTHX_ const char *name, int create) 411coro_get_hv (pTHX_ const char *name, int create)
365{ 412{
366#if PERL_VERSION_ATLEAST (5,10,0) 413#if PERL_VERSION_ATLEAST (5,10,0)
367 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 414 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
368 get_hv (name, create); 415 get_hv (name, create);
369#endif 416#endif
370 return get_hv (name, create); 417 return get_hv (name, create);
371} 418}
372 419
373/* may croak */ 420ECB_INLINE void
374INLINE CV * 421coro_times_update (void)
375coro_sv_2cv (pTHX_ SV *sv)
376{ 422{
377 HV *st; 423#ifdef coro_clock_gettime
378 GV *gvp; 424 struct timespec ts;
379 CV *cv = sv_2cv (sv, &st, &gvp, 0);
380 425
381 if (!cv) 426 ts.tv_sec = ts.tv_nsec = 0;
382 croak ("code reference expected"); 427 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
428 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
383 429
384 return cv; 430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
432 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
433#else
434 dTHX;
435 UV tv[2];
436
437 u2time (aTHX_ tv);
438 time_real [0] = tv [0];
439 time_real [1] = tv [1] * 1000;
440#endif
441}
442
443ECB_INLINE void
444coro_times_add (struct coro *c)
445{
446 c->t_real [1] += time_real [1];
447 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
448 c->t_real [0] += time_real [0];
449
450 c->t_cpu [1] += time_cpu [1];
451 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
452 c->t_cpu [0] += time_cpu [0];
453}
454
455ECB_INLINE void
456coro_times_sub (struct coro *c)
457{
458 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
459 c->t_real [1] -= time_real [1];
460 c->t_real [0] -= time_real [0];
461
462 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
463 c->t_cpu [1] -= time_cpu [1];
464 c->t_cpu [0] -= time_cpu [0];
385} 465}
386 466
387/*****************************************************************************/ 467/*****************************************************************************/
388/* magic glue */ 468/* magic glue */
389 469
390#define CORO_MAGIC_type_cv 26 470#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext 471#define CORO_MAGIC_type_state PERL_MAGIC_ext
392 472
393#define CORO_MAGIC_NN(sv, type) \ 473#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \ 474 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \ 475 ? SvMAGIC (sv) \
396 : mg_find (sv, type)) 476 : mg_find (sv, type))
397 477
398#define CORO_MAGIC(sv, type) \ 478#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \ 479 (ecb_expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \ 480 ? CORO_MAGIC_NN (sv, type) \
401 : 0) 481 : 0)
402 482
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 483#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 484#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405 485
486ECB_INLINE MAGIC *
487SvSTATEhv_p (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (ecb_expect_true (
492 SvTYPE (coro) == SVt_PVHV
493 && (mg = CORO_MAGIC_state (coro))
494 && mg->mg_virtual == &coro_state_vtbl
495 ))
496 return mg;
497
498 return 0;
499}
500
406INLINE struct coro * 501ECB_INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro) 502SvSTATE_ (pTHX_ SV *coro)
408{ 503{
409 HV *stash;
410 MAGIC *mg; 504 MAGIC *mg;
411 505
412 if (SvROK (coro)) 506 if (SvROK (coro))
413 coro = SvRV (coro); 507 coro = SvRV (coro);
414 508
415 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 509 mg = SvSTATEhv_p (aTHX_ coro);
510 if (!mg)
416 croak ("Coro::State object required"); 511 croak ("Coro::State object required");
417 512
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr; 513 return (struct coro *)mg->mg_ptr;
428} 514}
429 515
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 516#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431 517
… …
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 520#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435 521
436/*****************************************************************************/ 522/*****************************************************************************/
437/* padlist management and caching */ 523/* padlist management and caching */
438 524
439static AV * 525ECB_INLINE AV *
440coro_derive_padlist (pTHX_ CV *cv) 526coro_derive_padlist (pTHX_ CV *cv)
441{ 527{
442 AV *padlist = CvPADLIST (cv); 528 AV *padlist = CvPADLIST (cv);
443 AV *newpadlist, *newpad; 529 AV *newpadlist, *newpad;
444 530
… …
456 av_store (newpadlist, 1, (SV *)newpad); 542 av_store (newpadlist, 1, (SV *)newpad);
457 543
458 return newpadlist; 544 return newpadlist;
459} 545}
460 546
461static void 547ECB_INLINE void
462free_padlist (pTHX_ AV *padlist) 548free_padlist (pTHX_ AV *padlist)
463{ 549{
464 /* may be during global destruction */ 550 /* may be during global destruction */
465 if (!IN_DESTRUCT) 551 if (!IN_DESTRUCT)
466 { 552 {
… …
492 AV *padlist; 578 AV *padlist;
493 AV *av = (AV *)mg->mg_obj; 579 AV *av = (AV *)mg->mg_obj;
494 580
495 /* perl manages to free our internal AV and _then_ call us */ 581 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT) 582 if (IN_DESTRUCT)
497 return; 583 return 0;
498 584
499 /* casting is fun. */ 585 /* casting is fun. */
500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 586 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
501 free_padlist (aTHX_ padlist); 587 free_padlist (aTHX_ padlist);
502 588
… …
509 0, 0, 0, 0, 595 0, 0, 0, 0,
510 coro_cv_free 596 coro_cv_free
511}; 597};
512 598
513/* the next two functions merely cache the padlists */ 599/* the next two functions merely cache the padlists */
514static void 600ECB_INLINE void
515get_padlist (pTHX_ CV *cv) 601get_padlist (pTHX_ CV *cv)
516{ 602{
517 MAGIC *mg = CORO_MAGIC_cv (cv); 603 MAGIC *mg = CORO_MAGIC_cv (cv);
518 AV *av; 604 AV *av;
519 605
520 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 606 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
521 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 607 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
522 else 608 else
523 { 609 {
524#if CORO_PREFER_PERL_FUNCTIONS 610#if CORO_PREFER_PERL_FUNCTIONS
525 /* this is probably cleaner? but also slower! */ 611 /* this is probably cleaner? but also slower! */
… …
532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 618 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
533#endif 619#endif
534 } 620 }
535} 621}
536 622
537static void 623ECB_INLINE void
538put_padlist (pTHX_ CV *cv) 624put_padlist (pTHX_ CV *cv)
539{ 625{
540 MAGIC *mg = CORO_MAGIC_cv (cv); 626 MAGIC *mg = CORO_MAGIC_cv (cv);
541 AV *av; 627 AV *av;
542 628
543 if (expect_false (!mg)) 629 if (ecb_expect_false (!mg))
544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 630 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
545 631
546 av = (AV *)mg->mg_obj; 632 av = (AV *)mg->mg_obj;
547 633
548 if (expect_false (AvFILLp (av) >= AvMAX (av))) 634 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
549 av_extend (av, AvFILLp (av) + 1); 635 av_extend (av, AvFILLp (av) + 1);
550 636
551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 637 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
552} 638}
553 639
554/** load & save, init *******************************************************/ 640/** load & save, init *******************************************************/
641
642/* swap sv heads, at least logically */
643static void
644swap_svs (pTHX_ Coro__State c)
645{
646 int i;
647
648 for (i = 0; i <= AvFILLp (c->swap_sv); )
649 {
650 SV *a = AvARRAY (c->swap_sv)[i++];
651 SV *b = AvARRAY (c->swap_sv)[i++];
652
653 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
654 SV tmp;
655
656 /* swap sv_any */
657 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
658
659 /* swap sv_flags */
660 SvFLAGS (&tmp) = SvFLAGS (a);
661 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
662 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
663
664#if PERL_VERSION_ATLEAST (5,10,0)
665 /* perl 5.10 complicates this _quite_ a bit, but it also is
666 * much faster, so no quarrels here. alternatively, we could
667 * sv_upgrade to avoid this.
668 */
669 {
670 /* swap sv_u */
671 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
672
673 /* if SvANY points to the head, we need to adjust the pointers,
674 * as the pointer for a still points to b, and maybe vice versa.
675 */
676 #define svany_in_head(type) \
677 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
678
679 if (svany_in_head (SvTYPE (a)))
680 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
681
682 if (svany_in_head (SvTYPE (b)))
683 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
684 }
685#endif
686 }
687}
688
689#define SWAP_SVS(coro) \
690 if (ecb_expect_false ((coro)->swap_sv)) \
691 swap_svs (aTHX_ (coro))
555 692
556static void 693static void
557on_enterleave_call (pTHX_ SV *cb); 694on_enterleave_call (pTHX_ SV *cb);
558 695
559static void 696static void
… …
562 perl_slots *slot = c->slot; 699 perl_slots *slot = c->slot;
563 c->slot = 0; 700 c->slot = 0;
564 701
565 PL_mainstack = c->mainstack; 702 PL_mainstack = c->mainstack;
566 703
567 GvSV (PL_defgv) = slot->defsv; 704#if CORO_JIT
568 GvAV (PL_defgv) = slot->defav; 705 load_perl_slots (slot);
569 GvSV (PL_errgv) = slot->errsv; 706#else
570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
572
573 #define VAR(name,type) PL_ ## name = slot->name; 707 #define VARx(name,expr,type) expr = slot->name;
574 # include "state.h" 708 # include "state.h"
575 #undef VAR 709 #undef VARx
710#endif
576 711
577 { 712 {
578 dSP; 713 dSP;
579 714
580 CV *cv; 715 CV *cv;
581 716
582 /* now do the ugly restore mess */ 717 /* now do the ugly restore mess */
583 while (expect_true (cv = (CV *)POPs)) 718 while (ecb_expect_true (cv = (CV *)POPs))
584 { 719 {
585 put_padlist (aTHX_ cv); /* mark this padlist as available */ 720 put_padlist (aTHX_ cv); /* mark this padlist as available */
586 CvDEPTH (cv) = PTR2IV (POPs); 721 CvDEPTH (cv) = PTR2IV (POPs);
587 CvPADLIST (cv) = (AV *)POPs; 722 CvPADLIST (cv) = (AV *)POPs;
588 } 723 }
… …
591 } 726 }
592 727
593 slf_frame = c->slf_frame; 728 slf_frame = c->slf_frame;
594 CORO_THROW = c->except; 729 CORO_THROW = c->except;
595 730
731 if (ecb_expect_false (enable_times))
732 {
733 if (ecb_expect_false (!times_valid))
734 coro_times_update ();
735
736 coro_times_sub (c);
737 }
738
596 if (expect_false (c->on_enter)) 739 if (ecb_expect_false (c->on_enter))
597 { 740 {
598 int i; 741 int i;
599 742
600 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 743 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 744 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
602 } 745 }
746
747 SWAP_SVS (c);
603} 748}
604 749
605static void 750static void
606save_perl (pTHX_ Coro__State c) 751save_perl (pTHX_ Coro__State c)
607{ 752{
753 SWAP_SVS (c);
754
608 if (expect_false (c->on_leave)) 755 if (ecb_expect_false (c->on_leave))
609 { 756 {
610 int i; 757 int i;
611 758
612 for (i = AvFILLp (c->on_leave); i >= 0; --i) 759 for (i = AvFILLp (c->on_leave); i >= 0; --i)
613 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 760 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
761 }
762
763 times_valid = 0;
764
765 if (ecb_expect_false (enable_times))
766 {
767 coro_times_update (); times_valid = 1;
768 coro_times_add (c);
614 } 769 }
615 770
616 c->except = CORO_THROW; 771 c->except = CORO_THROW;
617 c->slf_frame = slf_frame; 772 c->slf_frame = slf_frame;
618 773
… …
629 784
630 XPUSHs (Nullsv); 785 XPUSHs (Nullsv);
631 /* this loop was inspired by pp_caller */ 786 /* this loop was inspired by pp_caller */
632 for (;;) 787 for (;;)
633 { 788 {
634 while (expect_true (cxix >= 0)) 789 while (ecb_expect_true (cxix >= 0))
635 { 790 {
636 PERL_CONTEXT *cx = &ccstk[cxix--]; 791 PERL_CONTEXT *cx = &ccstk[cxix--];
637 792
638 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 793 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
639 { 794 {
640 CV *cv = cx->blk_sub.cv; 795 CV *cv = cx->blk_sub.cv;
641 796
642 if (expect_true (CvDEPTH (cv))) 797 if (ecb_expect_true (CvDEPTH (cv)))
643 { 798 {
644 EXTEND (SP, 3); 799 EXTEND (SP, 3);
645 PUSHs ((SV *)CvPADLIST (cv)); 800 PUSHs ((SV *)CvPADLIST (cv));
646 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 801 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
647 PUSHs ((SV *)cv); 802 PUSHs ((SV *)cv);
… …
650 get_padlist (aTHX_ cv); 805 get_padlist (aTHX_ cv);
651 } 806 }
652 } 807 }
653 } 808 }
654 809
655 if (expect_true (top_si->si_type == PERLSI_MAIN)) 810 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
656 break; 811 break;
657 812
658 top_si = top_si->si_prev; 813 top_si = top_si->si_prev;
659 ccstk = top_si->si_cxstack; 814 ccstk = top_si->si_cxstack;
660 cxix = top_si->si_cxix; 815 cxix = top_si->si_cxix;
… …
662 817
663 PUTBACK; 818 PUTBACK;
664 } 819 }
665 820
666 /* allocate some space on the context stack for our purposes */ 821 /* allocate some space on the context stack for our purposes */
667 /* we manually unroll here, as usually 2 slots is enough */ 822 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
668 if (SLOT_COUNT >= 1) CXINC;
669 if (SLOT_COUNT >= 2) CXINC;
670 if (SLOT_COUNT >= 3) CXINC;
671 { 823 {
672 int i; 824 unsigned int i;
825
673 for (i = 3; i < SLOT_COUNT; ++i) 826 for (i = 0; i < SLOT_COUNT; ++i)
674 CXINC; 827 CXINC;
675 } 828
676 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 829 cxstack_ix -= SLOT_COUNT; /* undo allocation */
830 }
677 831
678 c->mainstack = PL_mainstack; 832 c->mainstack = PL_mainstack;
679 833
680 { 834 {
681 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 835 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
682 836
683 slot->defav = GvAV (PL_defgv); 837#if CORO_JIT
684 slot->defsv = DEFSV; 838 save_perl_slots (slot);
685 slot->errsv = ERRSV; 839#else
686 slot->irsgv = GvSV (irsgv);
687 slot->hinthv = GvHV (PL_hintgv);
688
689 #define VAR(name,type) slot->name = PL_ ## name; 840 #define VARx(name,expr,type) slot->name = expr;
690 # include "state.h" 841 # include "state.h"
691 #undef VAR 842 #undef VARx
843#endif
692 } 844 }
693} 845}
694 846
695/* 847/*
696 * allocate various perl stacks. This is almost an exact copy 848 * allocate various perl stacks. This is almost an exact copy
… …
702# define coro_init_stacks(thx) init_stacks () 854# define coro_init_stacks(thx) init_stacks ()
703#else 855#else
704static void 856static void
705coro_init_stacks (pTHX) 857coro_init_stacks (pTHX)
706{ 858{
707 PL_curstackinfo = new_stackinfo(32, 8); 859 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
708 PL_curstackinfo->si_type = PERLSI_MAIN; 860 PL_curstackinfo->si_type = PERLSI_MAIN;
709 PL_curstack = PL_curstackinfo->si_stack; 861 PL_curstack = PL_curstackinfo->si_stack;
710 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 862 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
711 863
712 PL_stack_base = AvARRAY(PL_curstack); 864 PL_stack_base = AvARRAY(PL_curstack);
… …
819#endif 971#endif
820 972
821/* 973/*
822 * This overrides the default magic get method of %SIG elements. 974 * This overrides the default magic get method of %SIG elements.
823 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 975 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
824 * and instead of trying to save and restore the hash elements, we just provide 976 * and instead of trying to save and restore the hash elements (extremely slow),
825 * readback here. 977 * we just provide our own readback here.
826 */ 978 */
827static int 979static int ecb_cold
828coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 980coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
829{ 981{
830 const char *s = MgPV_nolen_const (mg); 982 const char *s = MgPV_nolen_const (mg);
831 983
832 if (*s == '_') 984 if (*s == '_')
… …
844 } 996 }
845 997
846 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 998 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
847} 999}
848 1000
849static int 1001static int ecb_cold
850coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1002coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
851{ 1003{
852 const char *s = MgPV_nolen_const (mg); 1004 const char *s = MgPV_nolen_const (mg);
853 1005
854 if (*s == '_') 1006 if (*s == '_')
… …
868 } 1020 }
869 1021
870 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1022 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
871} 1023}
872 1024
873static int 1025static int ecb_cold
874coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1026coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
875{ 1027{
876 const char *s = MgPV_nolen_const (mg); 1028 const char *s = MgPV_nolen_const (mg);
877 1029
878 if (*s == '_') 1030 if (*s == '_')
… …
911slf_check_repeat (pTHX_ struct CoroSLF *frame) 1063slf_check_repeat (pTHX_ struct CoroSLF *frame)
912{ 1064{
913 return 1; 1065 return 1;
914} 1066}
915 1067
916static UNOP coro_setup_op; 1068static UNOP init_perl_op;
917 1069
918static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1070ecb_noinline static void /* noinline to keep it out of the transfer fast path */
919coro_setup (pTHX_ struct coro *coro) 1071init_perl (pTHX_ struct coro *coro)
920{ 1072{
921 /* 1073 /*
922 * emulate part of the perl startup here. 1074 * emulate part of the perl startup here.
923 */ 1075 */
924 coro_init_stacks (aTHX); 1076 coro_init_stacks (aTHX);
… …
931 PL_comppad_name_fill = 0; 1083 PL_comppad_name_fill = 0;
932 PL_comppad_name_floor = 0; 1084 PL_comppad_name_floor = 0;
933 PL_curpm = 0; 1085 PL_curpm = 0;
934 PL_curpad = 0; 1086 PL_curpad = 0;
935 PL_localizing = 0; 1087 PL_localizing = 0;
936 PL_dirty = 0;
937 PL_restartop = 0; 1088 PL_restartop = 0;
938#if PERL_VERSION_ATLEAST (5,10,0) 1089#if PERL_VERSION_ATLEAST (5,10,0)
939 PL_parser = 0; 1090 PL_parser = 0;
940#endif 1091#endif
941 PL_hints = 0; 1092 PL_hints = 0;
942 1093
943 /* recreate the die/warn hooks */ 1094 /* recreate the die/warn hooks */
944 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1095 PL_diehook = SvREFCNT_inc (rv_diehook);
945 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1096 PL_warnhook = SvREFCNT_inc (rv_warnhook);
946 1097
947 GvSV (PL_defgv) = newSV (0); 1098 GvSV (PL_defgv) = newSV (0);
948 GvAV (PL_defgv) = coro->args; coro->args = 0; 1099 GvAV (PL_defgv) = coro->args; coro->args = 0;
949 GvSV (PL_errgv) = newSV (0); 1100 GvSV (PL_errgv) = newSV (0);
950 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1101 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
… …
971 /* this newly created coroutine might be run on an existing cctx which most 1122 /* this newly created coroutine might be run on an existing cctx which most
972 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1123 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
973 */ 1124 */
974 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1125 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
975 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1126 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1127 slf_frame.destroy = 0;
976 1128
977 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1129 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
978 coro_setup_op.op_next = PL_op; 1130 init_perl_op.op_next = PL_op;
979 coro_setup_op.op_type = OP_ENTERSUB; 1131 init_perl_op.op_type = OP_ENTERSUB;
980 coro_setup_op.op_ppaddr = pp_slf; 1132 init_perl_op.op_ppaddr = pp_slf;
981 /* no flags etc. required, as an init function won't be called */ 1133 /* no flags etc. required, as an init function won't be called */
982 1134
983 PL_op = (OP *)&coro_setup_op; 1135 PL_op = (OP *)&init_perl_op;
984 1136
985 /* copy throw, in case it was set before coro_setup */ 1137 /* copy throw, in case it was set before init_perl */
986 CORO_THROW = coro->except; 1138 CORO_THROW = coro->except;
1139
1140 SWAP_SVS (coro);
1141
1142 if (ecb_expect_false (enable_times))
1143 {
1144 coro_times_update ();
1145 coro_times_sub (coro);
1146 }
987} 1147}
988 1148
989static void 1149static void
990coro_unwind_stacks (pTHX) 1150coro_unwind_stacks (pTHX)
991{ 1151{
… …
1006 dounwind (-1); 1166 dounwind (-1);
1007 } 1167 }
1008} 1168}
1009 1169
1010static void 1170static void
1011coro_destruct_perl (pTHX_ struct coro *coro) 1171destroy_perl (pTHX_ struct coro *coro)
1012{ 1172{
1013 SV *svf [9]; 1173 SV *svf [9];
1014 1174
1015 { 1175 {
1176 SV *old_current = SvRV (coro_current);
1016 struct coro *current = SvSTATE_current; 1177 struct coro *current = SvSTATE (old_current);
1017 1178
1018 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1179 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1019 1180
1020 save_perl (aTHX_ current); 1181 save_perl (aTHX_ current);
1182
1183 /* this will cause transfer_check to croak on block*/
1184 SvRV_set (coro_current, (SV *)coro->hv);
1185
1021 load_perl (aTHX_ coro); 1186 load_perl (aTHX_ coro);
1022 1187
1023 coro_unwind_stacks (aTHX); 1188 coro_unwind_stacks (aTHX);
1189
1190 /* restore swapped sv's */
1191 SWAP_SVS (coro);
1192
1024 coro_destruct_stacks (aTHX); 1193 coro_destruct_stacks (aTHX);
1025 1194
1026 // now save some sv's to be free'd later 1195 /* now save some sv's to be free'd later */
1027 svf [0] = GvSV (PL_defgv); 1196 svf [0] = GvSV (PL_defgv);
1028 svf [1] = (SV *)GvAV (PL_defgv); 1197 svf [1] = (SV *)GvAV (PL_defgv);
1029 svf [2] = GvSV (PL_errgv); 1198 svf [2] = GvSV (PL_errgv);
1030 svf [3] = (SV *)PL_defoutgv; 1199 svf [3] = (SV *)PL_defoutgv;
1031 svf [4] = PL_rs; 1200 svf [4] = PL_rs;
… …
1033 svf [6] = (SV *)GvHV (PL_hintgv); 1202 svf [6] = (SV *)GvHV (PL_hintgv);
1034 svf [7] = PL_diehook; 1203 svf [7] = PL_diehook;
1035 svf [8] = PL_warnhook; 1204 svf [8] = PL_warnhook;
1036 assert (9 == sizeof (svf) / sizeof (*svf)); 1205 assert (9 == sizeof (svf) / sizeof (*svf));
1037 1206
1207 SvRV_set (coro_current, old_current);
1208
1038 load_perl (aTHX_ current); 1209 load_perl (aTHX_ current);
1039 } 1210 }
1040 1211
1041 { 1212 {
1042 int i; 1213 unsigned int i;
1043 1214
1044 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) 1215 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1045 SvREFCNT_dec (svf [i]); 1216 SvREFCNT_dec (svf [i]);
1046 1217
1047 SvREFCNT_dec (coro->saved_deffh); 1218 SvREFCNT_dec (coro->saved_deffh);
… …
1049 SvREFCNT_dec (coro->invoke_cb); 1220 SvREFCNT_dec (coro->invoke_cb);
1050 SvREFCNT_dec (coro->invoke_av); 1221 SvREFCNT_dec (coro->invoke_av);
1051 } 1222 }
1052} 1223}
1053 1224
1054INLINE void 1225ECB_INLINE void
1055free_coro_mortal (pTHX) 1226free_coro_mortal (pTHX)
1056{ 1227{
1057 if (expect_true (coro_mortal)) 1228 if (ecb_expect_true (coro_mortal))
1058 { 1229 {
1059 SvREFCNT_dec (coro_mortal); 1230 SvREFCNT_dec ((SV *)coro_mortal);
1060 coro_mortal = 0; 1231 coro_mortal = 0;
1061 } 1232 }
1062} 1233}
1063 1234
1064static int 1235static int
… …
1197 1368
1198 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1369 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1199} 1370}
1200 1371
1201/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1372/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1202static void NOINLINE 1373static void ecb_noinline
1203cctx_prepare (pTHX) 1374cctx_prepare (pTHX)
1204{ 1375{
1205 PL_top_env = &PL_start_env; 1376 PL_top_env = &PL_start_env;
1206 1377
1207 if (cctx_current->flags & CC_TRACE) 1378 if (cctx_current->flags & CC_TRACE)
… …
1218 slf_frame.prepare = slf_prepare_set_stacklevel; 1389 slf_frame.prepare = slf_prepare_set_stacklevel;
1219 slf_frame.check = slf_check_set_stacklevel; 1390 slf_frame.check = slf_check_set_stacklevel;
1220} 1391}
1221 1392
1222/* the tail of transfer: execute stuff we can only do after a transfer */ 1393/* the tail of transfer: execute stuff we can only do after a transfer */
1223INLINE void 1394ECB_INLINE void
1224transfer_tail (pTHX) 1395transfer_tail (pTHX)
1225{ 1396{
1226 free_coro_mortal (aTHX); 1397 free_coro_mortal (aTHX);
1227} 1398}
1228 1399
… …
1253 /* somebody or something will hit me for both perl_run and PL_restartop */ 1424 /* somebody or something will hit me for both perl_run and PL_restartop */
1254 PL_restartop = PL_op; 1425 PL_restartop = PL_op;
1255 perl_run (PL_curinterp); 1426 perl_run (PL_curinterp);
1256 /* 1427 /*
1257 * Unfortunately, there is no way to get at the return values of the 1428 * Unfortunately, there is no way to get at the return values of the
1258 * coro body here, as perl_run destroys these 1429 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1430 * runtime errors here, as this is just a random interpreter, not a thread.
1259 */ 1431 */
1260 1432
1261 /* 1433 /*
1262 * If perl-run returns we assume exit() was being called or the coro 1434 * If perl-run returns we assume exit() was being called or the coro
1263 * fell off the end, which seems to be the only valid (non-bug) 1435 * fell off the end, which seems to be the only valid (non-bug)
… …
1271 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1443 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1272 } 1444 }
1273} 1445}
1274 1446
1275static coro_cctx * 1447static coro_cctx *
1276cctx_new () 1448cctx_new (void)
1277{ 1449{
1278 coro_cctx *cctx; 1450 coro_cctx *cctx;
1279 1451
1280 ++cctx_count; 1452 ++cctx_count;
1281 New (0, cctx, 1, coro_cctx); 1453 New (0, cctx, 1, coro_cctx);
… …
1287 return cctx; 1459 return cctx;
1288} 1460}
1289 1461
1290/* create a new cctx only suitable as source */ 1462/* create a new cctx only suitable as source */
1291static coro_cctx * 1463static coro_cctx *
1292cctx_new_empty () 1464cctx_new_empty (void)
1293{ 1465{
1294 coro_cctx *cctx = cctx_new (); 1466 coro_cctx *cctx = cctx_new ();
1295 1467
1296 cctx->sptr = 0; 1468 cctx->sptr = 0;
1297 coro_create (&cctx->cctx, 0, 0, 0, 0); 1469 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1299 return cctx; 1471 return cctx;
1300} 1472}
1301 1473
1302/* create a new cctx suitable as destination/running a perl interpreter */ 1474/* create a new cctx suitable as destination/running a perl interpreter */
1303static coro_cctx * 1475static coro_cctx *
1304cctx_new_run () 1476cctx_new_run (void)
1305{ 1477{
1306 coro_cctx *cctx = cctx_new (); 1478 coro_cctx *cctx = cctx_new ();
1307 void *stack_start; 1479 void *stack_start;
1308 size_t stack_size; 1480 size_t stack_size;
1309 1481
1310#if HAVE_MMAP 1482#if HAVE_MMAP
1311 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1483 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1312 /* mmap supposedly does allocate-on-write for us */ 1484 /* mmap supposedly does allocate-on-write for us */
1313 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1485 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1314 1486
1315 if (cctx->sptr != (void *)-1) 1487 if (cctx->sptr != (void *)-1)
1316 { 1488 {
1317 #if CORO_STACKGUARD 1489 #if CORO_STACKGUARD
1318 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1490 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1350cctx_destroy (coro_cctx *cctx) 1522cctx_destroy (coro_cctx *cctx)
1351{ 1523{
1352 if (!cctx) 1524 if (!cctx)
1353 return; 1525 return;
1354 1526
1355 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? 1527 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1356 1528
1357 --cctx_count; 1529 --cctx_count;
1358 coro_destroy (&cctx->cctx); 1530 coro_destroy (&cctx->cctx);
1359 1531
1360 /* coro_transfer creates new, empty cctx's */ 1532 /* coro_transfer creates new, empty cctx's */
… …
1379#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1551#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1380 1552
1381static coro_cctx * 1553static coro_cctx *
1382cctx_get (pTHX) 1554cctx_get (pTHX)
1383{ 1555{
1384 while (expect_true (cctx_first)) 1556 while (ecb_expect_true (cctx_first))
1385 { 1557 {
1386 coro_cctx *cctx = cctx_first; 1558 coro_cctx *cctx = cctx_first;
1387 cctx_first = cctx->next; 1559 cctx_first = cctx->next;
1388 --cctx_idle; 1560 --cctx_idle;
1389 1561
1390 if (expect_true (!CCTX_EXPIRED (cctx))) 1562 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1391 return cctx; 1563 return cctx;
1392 1564
1393 cctx_destroy (cctx); 1565 cctx_destroy (cctx);
1394 } 1566 }
1395 1567
… …
1400cctx_put (coro_cctx *cctx) 1572cctx_put (coro_cctx *cctx)
1401{ 1573{
1402 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1574 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1403 1575
1404 /* free another cctx if overlimit */ 1576 /* free another cctx if overlimit */
1405 if (expect_false (cctx_idle >= cctx_max_idle)) 1577 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1406 { 1578 {
1407 coro_cctx *first = cctx_first; 1579 coro_cctx *first = cctx_first;
1408 cctx_first = first->next; 1580 cctx_first = first->next;
1409 --cctx_idle; 1581 --cctx_idle;
1410 1582
… …
1421static void 1593static void
1422transfer_check (pTHX_ struct coro *prev, struct coro *next) 1594transfer_check (pTHX_ struct coro *prev, struct coro *next)
1423{ 1595{
1424 /* TODO: throwing up here is considered harmful */ 1596 /* TODO: throwing up here is considered harmful */
1425 1597
1426 if (expect_true (prev != next)) 1598 if (ecb_expect_true (prev != next))
1427 { 1599 {
1428 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1600 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1429 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1601 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1430 1602
1431 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1603 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1432 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1604 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1433 1605
1434#if !PERL_VERSION_ATLEAST (5,10,0) 1606#if !PERL_VERSION_ATLEAST (5,10,0)
1435 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1607 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1436 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1608 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1437#endif 1609#endif
1438 } 1610 }
1439} 1611}
1440 1612
1441/* always use the TRANSFER macro */ 1613/* always use the TRANSFER macro */
1442static void NOINLINE /* noinline so we have a fixed stackframe */ 1614static void ecb_noinline /* noinline so we have a fixed stackframe */
1443transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1615transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1444{ 1616{
1445 dSTACKLEVEL; 1617 dSTACKLEVEL;
1446 1618
1447 /* sometimes transfer is only called to set idle_sp */ 1619 /* sometimes transfer is only called to set idle_sp */
1448 if (expect_false (!prev)) 1620 if (ecb_expect_false (!prev))
1449 { 1621 {
1450 cctx_current->idle_sp = STACKLEVEL; 1622 cctx_current->idle_sp = STACKLEVEL;
1451 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1623 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1452 } 1624 }
1453 else if (expect_true (prev != next)) 1625 else if (ecb_expect_true (prev != next))
1454 { 1626 {
1455 coro_cctx *cctx_prev; 1627 coro_cctx *cctx_prev;
1456 1628
1457 if (expect_false (prev->flags & CF_NEW)) 1629 if (ecb_expect_false (prev->flags & CF_NEW))
1458 { 1630 {
1459 /* create a new empty/source context */ 1631 /* create a new empty/source context */
1460 prev->flags &= ~CF_NEW; 1632 prev->flags &= ~CF_NEW;
1461 prev->flags |= CF_RUNNING; 1633 prev->flags |= CF_RUNNING;
1462 } 1634 }
… …
1465 next->flags |= CF_RUNNING; 1637 next->flags |= CF_RUNNING;
1466 1638
1467 /* first get rid of the old state */ 1639 /* first get rid of the old state */
1468 save_perl (aTHX_ prev); 1640 save_perl (aTHX_ prev);
1469 1641
1470 if (expect_false (next->flags & CF_NEW)) 1642 if (ecb_expect_false (next->flags & CF_NEW))
1471 { 1643 {
1472 /* need to start coroutine */ 1644 /* need to start coroutine */
1473 next->flags &= ~CF_NEW; 1645 next->flags &= ~CF_NEW;
1474 /* setup coroutine call */ 1646 /* setup coroutine call */
1475 coro_setup (aTHX_ next); 1647 init_perl (aTHX_ next);
1476 } 1648 }
1477 else 1649 else
1478 load_perl (aTHX_ next); 1650 load_perl (aTHX_ next);
1479 1651
1480 /* possibly untie and reuse the cctx */ 1652 /* possibly untie and reuse the cctx */
1481 if (expect_true ( 1653 if (ecb_expect_true (
1482 cctx_current->idle_sp == STACKLEVEL 1654 cctx_current->idle_sp == STACKLEVEL
1483 && !(cctx_current->flags & CC_TRACE) 1655 && !(cctx_current->flags & CC_TRACE)
1484 && !force_cctx 1656 && !force_cctx
1485 )) 1657 ))
1486 { 1658 {
1487 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1659 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1488 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1660 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1489 1661
1490 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1662 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1491 /* without this the next cctx_get might destroy the running cctx while still in use */ 1663 /* without this the next cctx_get might destroy the running cctx while still in use */
1492 if (expect_false (CCTX_EXPIRED (cctx_current))) 1664 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1493 if (expect_true (!next->cctx)) 1665 if (ecb_expect_true (!next->cctx))
1494 next->cctx = cctx_get (aTHX); 1666 next->cctx = cctx_get (aTHX);
1495 1667
1496 cctx_put (cctx_current); 1668 cctx_put (cctx_current);
1497 } 1669 }
1498 else 1670 else
1499 prev->cctx = cctx_current; 1671 prev->cctx = cctx_current;
1500 1672
1501 ++next->usecount; 1673 ++next->usecount;
1502 1674
1503 cctx_prev = cctx_current; 1675 cctx_prev = cctx_current;
1504 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1676 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1505 1677
1506 next->cctx = 0; 1678 next->cctx = 0;
1507 1679
1508 if (expect_false (cctx_prev != cctx_current)) 1680 if (ecb_expect_false (cctx_prev != cctx_current))
1509 { 1681 {
1510 cctx_prev->top_env = PL_top_env; 1682 cctx_prev->top_env = PL_top_env;
1511 PL_top_env = cctx_current->top_env; 1683 PL_top_env = cctx_current->top_env;
1512 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1684 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1513 } 1685 }
… …
1519#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1691#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1520#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1692#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1521 1693
1522/** high level stuff ********************************************************/ 1694/** high level stuff ********************************************************/
1523 1695
1696/* this function is actually Coro, not Coro::State, but we call it from here */
1697/* because it is convenient - but it hasn't been declared yet for that reason */
1524static int 1698static void
1699coro_call_on_destroy (pTHX_ struct coro *coro);
1700
1701static void
1525coro_state_destroy (pTHX_ struct coro *coro) 1702coro_state_destroy (pTHX_ struct coro *coro)
1526{ 1703{
1527 if (coro->flags & CF_DESTROYED) 1704 if (coro->flags & CF_ZOMBIE)
1528 return 0; 1705 return;
1529 1706
1530 if (coro->on_destroy && !PL_dirty)
1531 coro->on_destroy (aTHX_ coro); 1707 slf_destroy (aTHX_ coro);
1532 1708
1533 coro->flags |= CF_DESTROYED; 1709 coro->flags |= CF_ZOMBIE;
1534 1710
1535 if (coro->flags & CF_READY) 1711 if (coro->flags & CF_READY)
1536 { 1712 {
1537 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1713 /* reduce nready, as destroying a ready coro effectively unreadies it */
1538 /* alternative: look through all ready queues and remove the coro */ 1714 /* alternative: look through all ready queues and remove the coro */
1539 --coro_nready; 1715 --coro_nready;
1540 } 1716 }
1541 else 1717 else
1542 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1718 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1719
1720 if (coro->next) coro->next->prev = coro->prev;
1721 if (coro->prev) coro->prev->next = coro->next;
1722 if (coro == coro_first) coro_first = coro->next;
1543 1723
1544 if (coro->mainstack 1724 if (coro->mainstack
1545 && coro->mainstack != main_mainstack 1725 && coro->mainstack != main_mainstack
1546 && coro->slot 1726 && coro->slot
1547 && !PL_dirty) 1727 && !PL_dirty)
1548 coro_destruct_perl (aTHX_ coro); 1728 destroy_perl (aTHX_ coro);
1549 1729
1550 cctx_destroy (coro->cctx); 1730 cctx_destroy (coro->cctx);
1551 SvREFCNT_dec (coro->startcv); 1731 SvREFCNT_dec (coro->startcv);
1552 SvREFCNT_dec (coro->args); 1732 SvREFCNT_dec (coro->args);
1733 SvREFCNT_dec (coro->swap_sv);
1553 SvREFCNT_dec (CORO_THROW); 1734 SvREFCNT_dec (CORO_THROW);
1554 1735
1555 if (coro->next) coro->next->prev = coro->prev; 1736 coro_call_on_destroy (aTHX_ coro);
1556 if (coro->prev) coro->prev->next = coro->next;
1557 if (coro == coro_first) coro_first = coro->next;
1558 1737
1559 return 1; 1738 /* more destruction mayhem in coro_state_free */
1560} 1739}
1561 1740
1562static int 1741static int
1563coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1742coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1564{ 1743{
1565 struct coro *coro = (struct coro *)mg->mg_ptr; 1744 struct coro *coro = (struct coro *)mg->mg_ptr;
1566 mg->mg_ptr = 0; 1745 mg->mg_ptr = 0;
1567 1746
1568 coro->hv = 0;
1569
1570 if (--coro->refcnt < 0)
1571 {
1572 coro_state_destroy (aTHX_ coro); 1747 coro_state_destroy (aTHX_ coro);
1748 SvREFCNT_dec (coro->on_destroy);
1749 SvREFCNT_dec (coro->status);
1750
1573 Safefree (coro); 1751 Safefree (coro);
1574 }
1575 1752
1576 return 0; 1753 return 0;
1577} 1754}
1578 1755
1579static int 1756static int ecb_cold
1580coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1757coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1581{ 1758{
1582 struct coro *coro = (struct coro *)mg->mg_ptr; 1759 /* called when perl clones the current process the slow way (windows process emulation) */
1583 1760 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1584 ++coro->refcnt; 1761 mg->mg_ptr = 0;
1762 mg->mg_virtual = 0;
1585 1763
1586 return 0; 1764 return 0;
1587} 1765}
1588 1766
1589static MGVTBL coro_state_vtbl = { 1767static MGVTBL coro_state_vtbl = {
… …
1612 1790
1613 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1791 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1614 TRANSFER (ta, 1); 1792 TRANSFER (ta, 1);
1615} 1793}
1616 1794
1617/*****************************************************************************/
1618/* gensub: simple closure generation utility */
1619
1620#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1621
1622/* create a closure from XS, returns a code reference */
1623/* the arg can be accessed via GENSUB_ARG from the callback */
1624/* the callback must use dXSARGS/XSRETURN */
1625static SV *
1626gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1627{
1628 CV *cv = (CV *)newSV (0);
1629
1630 sv_upgrade ((SV *)cv, SVt_PVCV);
1631
1632 CvANON_on (cv);
1633 CvISXSUB_on (cv);
1634 CvXSUB (cv) = xsub;
1635 GENSUB_ARG = arg;
1636
1637 return newRV_noinc ((SV *)cv);
1638}
1639
1640/** Coro ********************************************************************/ 1795/** Coro ********************************************************************/
1641 1796
1642INLINE void 1797ECB_INLINE void
1643coro_enq (pTHX_ struct coro *coro) 1798coro_enq (pTHX_ struct coro *coro)
1644{ 1799{
1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1800 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1646 1801
1647 SvREFCNT_inc_NN (coro->hv); 1802 SvREFCNT_inc_NN (coro->hv);
… …
1649 coro->next_ready = 0; 1804 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1805 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro; 1806 ready [1] = coro;
1652} 1807}
1653 1808
1654INLINE struct coro * 1809ECB_INLINE struct coro *
1655coro_deq (pTHX) 1810coro_deq (pTHX)
1656{ 1811{
1657 int prio; 1812 int prio;
1658 1813
1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1814 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1669 } 1824 }
1670 1825
1671 return 0; 1826 return 0;
1672} 1827}
1673 1828
1829static void
1830invoke_sv_ready_hook_helper (void)
1831{
1832 dTHX;
1833 dSP;
1834
1835 ENTER;
1836 SAVETMPS;
1837
1838 PUSHMARK (SP);
1839 PUTBACK;
1840 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1841
1842 FREETMPS;
1843 LEAVE;
1844}
1845
1674static int 1846static int
1675api_ready (pTHX_ SV *coro_sv) 1847api_ready (pTHX_ SV *coro_sv)
1676{ 1848{
1677 struct coro *coro;
1678 SV *sv_hook;
1679 void (*xs_hook)(void);
1680
1681 coro = SvSTATE (coro_sv); 1849 struct coro *coro = SvSTATE (coro_sv);
1682 1850
1683 if (coro->flags & CF_READY) 1851 if (coro->flags & CF_READY)
1684 return 0; 1852 return 0;
1685 1853
1686 coro->flags |= CF_READY; 1854 coro->flags |= CF_READY;
1687 1855
1688 sv_hook = coro_nready ? 0 : coro_readyhook;
1689 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1690
1691 coro_enq (aTHX_ coro); 1856 coro_enq (aTHX_ coro);
1692 ++coro_nready;
1693 1857
1694 if (sv_hook) 1858 if (!coro_nready++)
1695 { 1859 if (coroapi.readyhook)
1696 dSP; 1860 coroapi.readyhook ();
1697
1698 ENTER;
1699 SAVETMPS;
1700
1701 PUSHMARK (SP);
1702 PUTBACK;
1703 call_sv (sv_hook, G_VOID | G_DISCARD);
1704
1705 FREETMPS;
1706 LEAVE;
1707 }
1708
1709 if (xs_hook)
1710 xs_hook ();
1711 1861
1712 return 1; 1862 return 1;
1713} 1863}
1714 1864
1715static int 1865static int
… …
1717{ 1867{
1718 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1868 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1719} 1869}
1720 1870
1721/* expects to own a reference to next->hv */ 1871/* expects to own a reference to next->hv */
1722INLINE void 1872ECB_INLINE void
1723prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1873prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1724{ 1874{
1725 SV *prev_sv = SvRV (coro_current); 1875 SV *prev_sv = SvRV (coro_current);
1726 1876
1727 ta->prev = SvSTATE_hv (prev_sv); 1877 ta->prev = SvSTATE_hv (prev_sv);
… …
1740{ 1890{
1741 for (;;) 1891 for (;;)
1742 { 1892 {
1743 struct coro *next = coro_deq (aTHX); 1893 struct coro *next = coro_deq (aTHX);
1744 1894
1745 if (expect_true (next)) 1895 if (ecb_expect_true (next))
1746 { 1896 {
1747 /* cannot transfer to destroyed coros, skip and look for next */ 1897 /* cannot transfer to destroyed coros, skip and look for next */
1748 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1898 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1749 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1899 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1750 else 1900 else
1751 { 1901 {
1752 next->flags &= ~CF_READY; 1902 next->flags &= ~CF_READY;
1753 --coro_nready; 1903 --coro_nready;
… …
1760 { 1910 {
1761 /* nothing to schedule: call the idle handler */ 1911 /* nothing to schedule: call the idle handler */
1762 if (SvROK (sv_idle) 1912 if (SvROK (sv_idle)
1763 && SvOBJECT (SvRV (sv_idle))) 1913 && SvOBJECT (SvRV (sv_idle)))
1764 { 1914 {
1915 if (SvRV (sv_idle) == SvRV (coro_current))
1916 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1917
1765 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 1918 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1766 api_ready (aTHX_ SvRV (sv_idle)); 1919 api_ready (aTHX_ SvRV (sv_idle));
1767 --coro_nready; 1920 --coro_nready;
1768 } 1921 }
1769 else 1922 else
1770 { 1923 {
1924 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1771 dSP; 1925 dSP;
1772 1926
1773 ENTER; 1927 ENTER;
1774 SAVETMPS; 1928 SAVETMPS;
1775 1929
… …
1782 } 1936 }
1783 } 1937 }
1784 } 1938 }
1785} 1939}
1786 1940
1787INLINE void 1941ECB_INLINE void
1788prepare_cede (pTHX_ struct coro_transfer_args *ta) 1942prepare_cede (pTHX_ struct coro_transfer_args *ta)
1789{ 1943{
1790 api_ready (aTHX_ coro_current); 1944 api_ready (aTHX_ coro_current);
1791 prepare_schedule (aTHX_ ta); 1945 prepare_schedule (aTHX_ ta);
1792} 1946}
1793 1947
1794INLINE void 1948ECB_INLINE void
1795prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1949prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1796{ 1950{
1797 SV *prev = SvRV (coro_current); 1951 SV *prev = SvRV (coro_current);
1798 1952
1799 if (coro_nready) 1953 if (coro_nready)
… …
1829{ 1983{
1830 struct coro_transfer_args ta; 1984 struct coro_transfer_args ta;
1831 1985
1832 prepare_cede (aTHX_ &ta); 1986 prepare_cede (aTHX_ &ta);
1833 1987
1834 if (expect_true (ta.prev != ta.next)) 1988 if (ecb_expect_true (ta.prev != ta.next))
1835 { 1989 {
1836 TRANSFER (ta, 1); 1990 TRANSFER (ta, 1);
1837 return 1; 1991 return 1;
1838 } 1992 }
1839 else 1993 else
… …
1882 coro->slot->runops = RUNOPS_DEFAULT; 2036 coro->slot->runops = RUNOPS_DEFAULT;
1883 } 2037 }
1884} 2038}
1885 2039
1886static void 2040static void
2041coro_push_av (pTHX_ AV *av, I32 gimme_v)
2042{
2043 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2044 {
2045 dSP;
2046
2047 if (gimme_v == G_SCALAR)
2048 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2049 else
2050 {
2051 int i;
2052 EXTEND (SP, AvFILLp (av) + 1);
2053
2054 for (i = 0; i <= AvFILLp (av); ++i)
2055 PUSHs (AvARRAY (av)[i]);
2056 }
2057
2058 PUTBACK;
2059 }
2060}
2061
2062static void
2063coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2064{
2065 if (!coro->on_destroy)
2066 coro->on_destroy = newAV ();
2067
2068 av_push (coro->on_destroy, cb);
2069}
2070
2071static void
2072slf_destroy_join (pTHX_ struct CoroSLF *frame)
2073{
2074 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2075}
2076
2077static int
2078slf_check_join (pTHX_ struct CoroSLF *frame)
2079{
2080 struct coro *coro = (struct coro *)frame->data;
2081
2082 if (!coro->status)
2083 return 1;
2084
2085 frame->destroy = 0;
2086
2087 coro_push_av (aTHX_ coro->status, GIMME_V);
2088
2089 SvREFCNT_dec ((SV *)coro->hv);
2090
2091 return 0;
2092}
2093
2094static void
2095slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2098
2099 if (items > 1)
2100 croak ("join called with too many arguments");
2101
2102 if (coro->status)
2103 frame->prepare = prepare_nop;
2104 else
2105 {
2106 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2107 frame->prepare = prepare_schedule;
2108 }
2109
2110 frame->check = slf_check_join;
2111 frame->destroy = slf_destroy_join;
2112 frame->data = (void *)coro;
2113 SvREFCNT_inc (coro->hv);
2114}
2115
2116static void
1887coro_call_on_destroy (pTHX_ struct coro *coro) 2117coro_call_on_destroy (pTHX_ struct coro *coro)
1888{ 2118{
1889 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2119 AV *od = coro->on_destroy;
1890 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1891 2120
1892 if (on_destroyp) 2121 if (!od)
1893 { 2122 return;
1894 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1895 2123
1896 while (AvFILLp (on_destroy) >= 0) 2124 while (AvFILLp (od) >= 0)
2125 {
2126 SV *cb = sv_2mortal (av_pop (od));
2127
2128 /* coro hv's (and only hv's at the moment) are supported as well */
2129 if (SvSTATEhv_p (aTHX_ cb))
2130 api_ready (aTHX_ cb);
2131 else
1897 { 2132 {
1898 dSP; /* don't disturb outer sp */ 2133 dSP; /* don't disturb outer sp */
1899 SV *cb = av_pop (on_destroy);
1900
1901 PUSHMARK (SP); 2134 PUSHMARK (SP);
1902 2135
1903 if (statusp) 2136 if (coro->status)
1904 { 2137 {
1905 int i; 2138 PUTBACK;
1906 AV *status = (AV *)SvRV (*statusp); 2139 coro_push_av (aTHX_ coro->status, G_ARRAY);
1907 EXTEND (SP, AvFILLp (status) + 1); 2140 SPAGAIN;
1908
1909 for (i = 0; i <= AvFILLp (status); ++i)
1910 PUSHs (AvARRAY (status)[i]);
1911 } 2141 }
1912 2142
1913 PUTBACK; 2143 PUTBACK;
1914 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2144 call_sv (cb, G_VOID | G_DISCARD);
1915 } 2145 }
1916 } 2146 }
1917} 2147}
1918 2148
1919static void 2149static void
1920slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2150coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1921{ 2151{
2152 AV *av;
2153
2154 if (coro->status)
2155 {
2156 av = coro->status;
2157 av_clear (av);
2158 }
2159 else
2160 av = coro->status = newAV ();
2161
2162 /* items are actually not so common, so optimise for this case */
2163 if (items)
2164 {
1922 int i; 2165 int i;
1923 HV *hv = (HV *)SvRV (coro_current);
1924 AV *av = newAV ();
1925 2166
1926 av_extend (av, items - 1); 2167 av_extend (av, items - 1);
2168
1927 for (i = 0; i < items; ++i) 2169 for (i = 0; i < items; ++i)
1928 av_push (av, SvREFCNT_inc_NN (arg [i])); 2170 av_push (av, SvREFCNT_inc_NN (arg [i]));
2171 }
2172}
1929 2173
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2174static void
1931 2175slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2176{
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2177 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager); 2178 api_ready (aTHX_ sv_manager);
1934 2179
1935 frame->prepare = prepare_schedule; 2180 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat; 2181 frame->check = slf_check_repeat;
1937 2182
1938 /* as a minor optimisation, we could unwind all stacks here */ 2183 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */ 2184 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/ 2185 /*coro_unwind_stacks (aTHX);*/
2186}
2187
2188static void
2189slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2190{
2191 HV *coro_hv = (HV *)SvRV (coro_current);
2192
2193 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2194 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2195}
2196
2197static void
2198slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2199{
2200 HV *coro_hv;
2201 struct coro *coro;
2202
2203 if (items <= 0)
2204 croak ("Coro::cancel called without coro object,");
2205
2206 coro = SvSTATE (arg [0]);
2207 coro_hv = coro->hv;
2208
2209 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2210
2211 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2212 {
2213 /* coro currently busy cancelling something, so just notify it */
2214 coro->slf_frame.data = (void *)coro;
2215
2216 frame->prepare = prepare_nop;
2217 frame->check = slf_check_nop;
2218 }
2219 else if (coro_hv == (HV *)SvRV (coro_current))
2220 {
2221 /* cancelling the current coro is allowed, and equals terminate */
2222 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2223 }
2224 else
2225 {
2226 struct coro *self = SvSTATE_current;
2227
2228 /* otherwise we cancel directly, purely for speed reasons
2229 * unfortunately, this requires some magic trickery, as
2230 * somebody else could cancel us, so we have to fight the cancellation.
2231 * this is ugly, and hopefully fully worth the extra speed.
2232 * besides, I can't get the slow-but-safe version working...
2233 */
2234 slf_frame.data = 0;
2235 self->flags |= CF_NOCANCEL;
2236 coro_state_destroy (aTHX_ coro);
2237 self->flags &= ~CF_NOCANCEL;
2238
2239 if (slf_frame.data)
2240 {
2241 /* while we were busy we have been cancelled, so terminate */
2242 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2243 }
2244 else
2245 {
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 }
2250}
2251
2252static int
2253slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2254{
2255 frame->prepare = 0;
2256 coro_unwind_stacks (aTHX);
2257
2258 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2259
2260 return 1;
2261}
2262
2263static int
2264safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2265{
2266 if (coro->cctx)
2267 croak ("coro inside C callback, unable to cancel at this time, caught");
2268
2269 if (coro->flags & CF_NEW)
2270 {
2271 coro_set_status (aTHX_ coro, arg, items);
2272 coro_state_destroy (aTHX_ coro);
2273 }
2274 else
2275 {
2276 if (!coro->slf_frame.prepare)
2277 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2278
2279 slf_destroy (aTHX_ coro);
2280
2281 coro_set_status (aTHX_ coro, arg, items);
2282 coro->slf_frame.prepare = prepare_nop;
2283 coro->slf_frame.check = slf_check_safe_cancel;
2284
2285 api_ready (aTHX_ (SV *)coro->hv);
2286 }
2287
2288 return 1;
1941} 2289}
1942 2290
1943/*****************************************************************************/ 2291/*****************************************************************************/
1944/* async pool handler */ 2292/* async pool handler */
1945 2293
… …
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2324slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{ 2325{
1978 HV *hv = (HV *)SvRV (coro_current); 2326 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv); 2327 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980 2328
1981 if (expect_true (coro->saved_deffh)) 2329 if (ecb_expect_true (coro->saved_deffh))
1982 { 2330 {
1983 /* subsequent iteration */ 2331 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2332 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0; 2333 coro->saved_deffh = 0;
1986 2334
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2335 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2336 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 { 2337 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2338 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1991 coro->invoke_av = newAV (); 2339 return;
1992
1993 frame->prepare = prepare_nop;
1994 } 2340 }
1995 else 2341 else
1996 { 2342 {
1997 av_clear (GvAV (PL_defgv)); 2343 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2344 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
2023 2369
2024static void 2370static void
2025coro_rouse_callback (pTHX_ CV *cv) 2371coro_rouse_callback (pTHX_ CV *cv)
2026{ 2372{
2027 dXSARGS; 2373 dXSARGS;
2028 SV *data = (SV *)GENSUB_ARG; 2374 SV *data = (SV *)S_GENSUB_ARG;
2029 2375
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2376 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 { 2377 {
2032 /* first call, set args */ 2378 /* first call, set args */
2033 SV *coro = SvRV (data); 2379 SV *coro = SvRV (data);
… …
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV 2445 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2446 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,"); 2447 croak ("Coro::rouse_wait called with illegal callback argument,");
2102 2448
2103 { 2449 {
2104 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2450 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)GENSUB_ARG; 2451 SV *data = (SV *)S_GENSUB_ARG;
2106 2452
2107 frame->data = (void *)data; 2453 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2454 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait; 2455 frame->check = slf_check_rouse_wait;
2110 } 2456 }
… …
2114coro_new_rouse_cb (pTHX) 2460coro_new_rouse_cb (pTHX)
2115{ 2461{
2116 HV *hv = (HV *)SvRV (coro_current); 2462 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv); 2463 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv); 2464 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2465 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120 2466
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2467 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */ 2468 SvREFCNT_dec (data); /* magicext increases the refcount */
2123 2469
2124 SvREFCNT_dec (coro->rouse_cb); 2470 SvREFCNT_dec (coro->rouse_cb);
… …
2221static void 2567static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2568slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{ 2569{
2224 frame->prepare = prepare_cede_notself; 2570 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop; 2571 frame->check = slf_check_nop;
2572}
2573
2574/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2575static void
2576slf_destroy (pTHX_ struct coro *coro)
2577{
2578 /* this callback is reserved for slf functions needing to do cleanup */
2579 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2580 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2581
2582 /*
2583 * The on_destroy above most likely is from an SLF call.
2584 * Since by definition the SLF call will not finish when we destroy
2585 * the coro, we will have to force-finish it here, otherwise
2586 * cleanup functions cannot call SLF functions.
2587 */
2588 coro->slf_frame.prepare = 0;
2226} 2589}
2227 2590
2228/* 2591/*
2229 * these not obviously related functions are all rolled into one 2592 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same 2593 * function to increase chances that they all will call transfer with the same
… …
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2600 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238 2601
2239 /* set up the slf frame, unless it has already been set-up */ 2602 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */ 2603 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */ 2604 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare)) 2605 if (ecb_expect_true (!slf_frame.prepare))
2243 { 2606 {
2244 /* first iteration */ 2607 /* first iteration */
2245 dSP; 2608 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1; 2609 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */ 2610 int items = SP - arg; /* args without function object */
… …
2288 while (slf_frame.check (aTHX_ &slf_frame)); 2651 while (slf_frame.check (aTHX_ &slf_frame));
2289 2652
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2653 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291 2654
2292 /* exception handling */ 2655 /* exception handling */
2293 if (expect_false (CORO_THROW)) 2656 if (ecb_expect_false (CORO_THROW))
2294 { 2657 {
2295 SV *exception = sv_2mortal (CORO_THROW); 2658 SV *exception = sv_2mortal (CORO_THROW);
2296 2659
2297 CORO_THROW = 0; 2660 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception); 2661 sv_setsv (ERRSV, exception);
2299 croak (0); 2662 croak (0);
2300 } 2663 }
2301 2664
2302 /* return value handling - mostly like entersub */ 2665 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */ 2666 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR) 2667 if (GIMME_V == G_SCALAR
2668 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2305 { 2669 {
2306 dSP; 2670 dSP;
2307 SV **bot = PL_stack_base + checkmark; 2671 SV **bot = PL_stack_base + checkmark;
2308 2672
2309 if (sp == bot) /* too few, push undef */ 2673 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef; 2674 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */ 2675 else /* too many, take last one */
2312 bot [1] = *sp; 2676 bot [1] = *sp;
2313 2677
2314 SP = bot + 1; 2678 SP = bot + 1;
2315 2679
2316 PUTBACK; 2680 PUTBACK;
… …
2349 if (PL_op->op_flags & OPf_STACKED) 2713 if (PL_op->op_flags & OPf_STACKED)
2350 { 2714 {
2351 if (items > slf_arga) 2715 if (items > slf_arga)
2352 { 2716 {
2353 slf_arga = items; 2717 slf_arga = items;
2354 free (slf_argv); 2718 Safefree (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *)); 2719 New (0, slf_argv, slf_arga, SV *);
2356 } 2720 }
2357 2721
2358 slf_argc = items; 2722 slf_argc = items;
2359 2723
2360 for (i = 0; i < items; ++i) 2724 for (i = 0; i < items; ++i)
… …
2423{ 2787{
2424 PerlIOBuf base; 2788 PerlIOBuf base;
2425 NV next, every; 2789 NV next, every;
2426} PerlIOCede; 2790} PerlIOCede;
2427 2791
2428static IV 2792static IV ecb_cold
2429PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2793PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2430{ 2794{
2431 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2432 2796
2433 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2797 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2434 self->next = nvtime () + self->every; 2798 self->next = nvtime () + self->every;
2435 2799
2436 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2800 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2437} 2801}
2438 2802
2439static SV * 2803static SV * ecb_cold
2440PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2804PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2441{ 2805{
2442 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2806 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2443 2807
2444 return newSVnv (self->every); 2808 return newSVnv (self->every);
… …
2556 SvREFCNT_dec (cb); 2920 SvREFCNT_dec (cb);
2557 } 2921 }
2558} 2922}
2559 2923
2560static void 2924static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2925coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2562{ 2926{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2927 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2928 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2565} 2929}
2566 2930
2567static int 2931static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2932slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{ 2933{
2570 AV *av = (AV *)frame->data; 2934 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0]; 2935 SV *count_sv = AvARRAY (av)[0];
2936 SV *coro_hv = SvRV (coro_current);
2572 2937
2573 /* if we are about to throw, don't actually acquire the lock, just throw */ 2938 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW) 2939 if (CORO_THROW)
2575 return 0; 2940 return 0;
2576 else if (SvIVX (count_sv) > 0) 2941 else if (SvIVX (count_sv) > 0)
2577 { 2942 {
2578 SvSTATE_current->on_destroy = 0; 2943 frame->destroy = 0;
2579 2944
2580 if (acquire) 2945 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2946 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else 2947 else
2583 coro_semaphore_adjust (aTHX_ av, 0); 2948 coro_semaphore_adjust (aTHX_ av, 0);
… …
2588 { 2953 {
2589 int i; 2954 int i;
2590 /* if we were woken up but can't down, we look through the whole */ 2955 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */ 2956 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */ 2957 /* this avoids some degenerate memory usage cases */
2593 2958 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current)) 2959 if (AvARRAY (av)[i] == coro_hv)
2596 return 1; 2960 return 1;
2597 2961
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2962 av_push (av, SvREFCNT_inc (coro_hv));
2599 return 1; 2963 return 1;
2600 } 2964 }
2601} 2965}
2602 2966
2603static int 2967static int
… …
2626 { 2990 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2991 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628 2992
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2993 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule; 2994 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */ 2995 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2996 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2997 frame->destroy = coro_semaphore_destroy;
2635 } 2998 }
2636} 2999}
2637 3000
2638static void 3001static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3002slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2647{ 3010{
2648 if (items >= 2) 3011 if (items >= 2)
2649 { 3012 {
2650 /* callback form */ 3013 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]); 3014 AV *av = (AV *)SvRV (arg [0]);
2652 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3015 SV *cb_cv = s_get_cv_croak (arg [1]);
2653 3016
2654 av_push (av, SvREFCNT_inc_NN (cb_cv)); 3017 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655 3018
2656 if (SvIVX (AvARRAY (av)[0]) > 0) 3019 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0); 3020 coro_semaphore_adjust (aTHX_ av, 0);
… …
2717{ 3080{
2718 AV *av = (AV *)SvRV (arg [0]); 3081 AV *av = (AV *)SvRV (arg [0]);
2719 3082
2720 if (items >= 2) 3083 if (items >= 2)
2721 { 3084 {
2722 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3085 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv)); 3086 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724 3087
2725 if (SvIVX (AvARRAY (av)[0])) 3088 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ 3089 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2727 3090
2728 frame->prepare = prepare_nop; 3091 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop; 3092 frame->check = slf_check_nop;
2730 } 3093 }
2731 else if (SvIVX (AvARRAY (av)[0])) 3094 else if (SvIVX (AvARRAY (av)[0]))
… …
2762 3125
2763static void 3126static void
2764coro_aio_callback (pTHX_ CV *cv) 3127coro_aio_callback (pTHX_ CV *cv)
2765{ 3128{
2766 dXSARGS; 3129 dXSARGS;
2767 AV *state = (AV *)GENSUB_ARG; 3130 AV *state = (AV *)S_GENSUB_ARG;
2768 SV *coro = av_pop (state); 3131 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state)); 3132 SV *data_sv = newSV (sizeof (struct io_state));
2770 3133
2771 av_extend (state, items - 1); 3134 av_extend (state, items - 1);
2772 3135
… …
2857 dSP; 3220 dSP;
2858 3221
2859 static SV *prio_cv; 3222 static SV *prio_cv;
2860 static SV *prio_sv; 3223 static SV *prio_sv;
2861 3224
2862 if (expect_false (!prio_cv)) 3225 if (ecb_expect_false (!prio_cv))
2863 { 3226 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0); 3228 prio_sv = newSViv (0);
2866 } 3229 }
2867 3230
… …
2886 3249
2887 for (i = 0; i < items; ++i) 3250 for (i = 0; i < items; ++i)
2888 PUSHs (arg [i]); 3251 PUSHs (arg [i]);
2889 3252
2890 /* now push the callback closure */ 3253 /* now push the callback closure */
2891 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3254 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2892 3255
2893 /* now call the AIO function - we assume our request is uncancelable */ 3256 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK; 3257 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD); 3258 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 } 3259 }
2897 3260
2898 /* now that the requets is going, we loop toll we have a result */ 3261 /* now that the request is going, we loop till we have a result */
2899 frame->data = (void *)state; 3262 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule; 3263 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req; 3264 frame->check = slf_check_aio_req;
2902} 3265}
2903 3266
… …
2913 3276
2914/*****************************************************************************/ 3277/*****************************************************************************/
2915 3278
2916#if CORO_CLONE 3279#if CORO_CLONE
2917# include "clone.c" 3280# include "clone.c"
3281#endif
3282
3283/*****************************************************************************/
3284
3285static SV *
3286coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3287{
3288 SV *coro_sv;
3289 struct coro *coro;
3290 MAGIC *mg;
3291 HV *hv;
3292 SV *cb;
3293 int i;
3294
3295 if (argc > 0)
3296 {
3297 cb = s_get_cv_croak (argv [0]);
3298
3299 if (!is_coro)
3300 {
3301 if (CvISXSUB (cb))
3302 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3303
3304 if (!CvROOT (cb))
3305 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3306 }
3307 }
3308
3309 Newz (0, coro, 1, struct coro);
3310 coro->args = newAV ();
3311 coro->flags = CF_NEW;
3312
3313 if (coro_first) coro_first->prev = coro;
3314 coro->next = coro_first;
3315 coro_first = coro;
3316
3317 coro->hv = hv = newHV ();
3318 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3319 mg->mg_flags |= MGf_DUP;
3320 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3321
3322 if (argc > 0)
3323 {
3324 av_extend (coro->args, argc + is_coro - 1);
3325
3326 if (is_coro)
3327 {
3328 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3329 cb = (SV *)cv_coro_run;
3330 }
3331
3332 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3333
3334 for (i = 1; i < argc; i++)
3335 av_push (coro->args, newSVsv (argv [i]));
3336 }
3337
3338 return coro_sv;
3339}
3340
3341#ifndef __cplusplus
3342ecb_cold XS(boot_Coro__State);
3343#endif
3344
3345#if CORO_JIT
3346
3347static void ecb_noinline ecb_cold
3348pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3349{
3350 dSP;
3351 AV *av = newAV ();
3352
3353 av_store (av, 3, newSVuv (d));
3354 av_store (av, 2, newSVuv (c));
3355 av_store (av, 1, newSVuv (b));
3356 av_store (av, 0, newSVuv (a));
3357
3358 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3359
3360 PUTBACK;
3361}
3362
3363static void ecb_noinline ecb_cold
3364jit_init (pTHX)
3365{
3366 dSP;
3367 SV *load, *save;
3368 char *map_base;
3369 char *load_ptr, *save_ptr;
3370 STRLEN load_len, save_len, map_len;
3371 int count;
3372
3373 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3374
3375 PUSHMARK (SP);
3376#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3377# include "state.h"
3378#undef VARx
3379 count = call_pv ("Coro::State::_jit", G_ARRAY);
3380 SPAGAIN;
3381
3382 save = POPs; save_ptr = SvPVbyte (save, save_len);
3383 load = POPs; load_ptr = SvPVbyte (load, load_len);
3384
3385 map_len = load_len + save_len + 16;
3386
3387 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3388
3389 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3390
3391 load_perl_slots = (load_save_perl_slots_type)map_base;
3392 memcpy (map_base, load_ptr, load_len);
3393
3394 map_base += (load_len + 15) & ~15;
3395
3396 save_perl_slots = (load_save_perl_slots_type)map_base;
3397 memcpy (map_base, save_ptr, save_len);
3398
3399 /* we are good citizens and try to make the page read-only, so the evil evil */
3400 /* hackers might have it a bit more difficult */
3401 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3402
3403 PUTBACK;
3404 eval_pv ("undef &Coro::State::_jit", 1);
3405}
3406
2918#endif 3407#endif
2919 3408
2920MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3409MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2921 3410
2922PROTOTYPES: DISABLE 3411PROTOTYPES: DISABLE
… …
2928 coro_thx = PERL_GET_CONTEXT; 3417 coro_thx = PERL_GET_CONTEXT;
2929# endif 3418# endif
2930#endif 3419#endif
2931 BOOT_PAGESIZE; 3420 BOOT_PAGESIZE;
2932 3421
3422 /* perl defines these to check for existance first, but why it doesn't */
3423 /* just create them one at init time is not clear to me, except for */
3424 /* programs trying to delete them, but... */
3425 /* anyway, we declare this as invalid and make sure they are initialised here */
3426 DEFSV;
3427 ERRSV;
3428
2933 cctx_current = cctx_new_empty (); 3429 cctx_current = cctx_new_empty ();
2934 3430
2935 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3431 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2936 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3432 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2937 3433
… …
2976 coroapi.prepare_nop = prepare_nop; 3472 coroapi.prepare_nop = prepare_nop;
2977 coroapi.prepare_schedule = prepare_schedule; 3473 coroapi.prepare_schedule = prepare_schedule;
2978 coroapi.prepare_cede = prepare_cede; 3474 coroapi.prepare_cede = prepare_cede;
2979 coroapi.prepare_cede_notself = prepare_cede_notself; 3475 coroapi.prepare_cede_notself = prepare_cede_notself;
2980 3476
2981 { 3477 time_init (aTHX);
2982 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2983
2984 if (!svp) croak ("Time::HiRes is required");
2985 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2986
2987 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2988 }
2989 3478
2990 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3479 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3480#if CORO_JIT
3481 PUTBACK;
3482 jit_init (aTHX);
3483 SPAGAIN;
3484#endif
2991} 3485}
2992 3486
2993SV * 3487SV *
2994new (char *klass, ...) 3488new (SV *klass, ...)
2995 ALIAS: 3489 ALIAS:
2996 Coro::new = 1 3490 Coro::new = 1
2997 CODE: 3491 CODE:
2998{ 3492 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2999 struct coro *coro; 3493 OUTPUT:
3000 MAGIC *mg;
3001 HV *hv;
3002 CV *cb;
3003 int i;
3004
3005 if (items > 1)
3006 {
3007 cb = coro_sv_2cv (aTHX_ ST (1));
3008
3009 if (!ix)
3010 {
3011 if (CvISXSUB (cb))
3012 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3013
3014 if (!CvROOT (cb))
3015 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3016 }
3017 }
3018
3019 Newz (0, coro, 1, struct coro);
3020 coro->args = newAV ();
3021 coro->flags = CF_NEW;
3022
3023 if (coro_first) coro_first->prev = coro;
3024 coro->next = coro_first;
3025 coro_first = coro;
3026
3027 coro->hv = hv = newHV ();
3028 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3029 mg->mg_flags |= MGf_DUP;
3030 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
3031
3032 if (items > 1)
3033 {
3034 av_extend (coro->args, items - 1 + ix - 1);
3035
3036 if (ix)
3037 {
3038 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3039 cb = cv_coro_run;
3040 }
3041
3042 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3043
3044 for (i = 2; i < items; i++)
3045 av_push (coro->args, newSVsv (ST (i)));
3046 }
3047}
3048 OUTPUT:
3049 RETVAL 3494 RETVAL
3050 3495
3051void 3496void
3052transfer (...) 3497transfer (...)
3053 PROTOTYPE: $$ 3498 PROTOTYPE: $$
3054 CODE: 3499 CODE:
3055 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3500 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3056
3057bool
3058_destroy (SV *coro_sv)
3059 CODE:
3060 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3061 OUTPUT:
3062 RETVAL
3063 3501
3064void 3502void
3065_exit (int code) 3503_exit (int code)
3066 PROTOTYPE: $ 3504 PROTOTYPE: $
3067 CODE: 3505 CODE:
… …
3143 CODE: 3581 CODE:
3144{ 3582{
3145 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3583 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3146 { 3584 {
3147 struct coro *current = SvSTATE_current; 3585 struct coro *current = SvSTATE_current;
3586 struct CoroSLF slf_save;
3148 3587
3149 if (current != coro) 3588 if (current != coro)
3150 { 3589 {
3151 PUTBACK; 3590 PUTBACK;
3152 save_perl (aTHX_ current); 3591 save_perl (aTHX_ current);
3153 load_perl (aTHX_ coro); 3592 load_perl (aTHX_ coro);
3593 /* the coro is most likely in an active SLF call.
3594 * while not strictly required (the code we execute is
3595 * not allowed to call any SLF functions), it's cleaner
3596 * to reinitialise the slf_frame and restore it later.
3597 * This might one day allow us to actually do SLF calls
3598 * from code executed here.
3599 */
3600 slf_save = slf_frame;
3601 slf_frame.prepare = 0;
3154 SPAGAIN; 3602 SPAGAIN;
3155 } 3603 }
3156 3604
3157 PUSHSTACK; 3605 PUSHSTACK;
3158 3606
… …
3168 SPAGAIN; 3616 SPAGAIN;
3169 3617
3170 if (current != coro) 3618 if (current != coro)
3171 { 3619 {
3172 PUTBACK; 3620 PUTBACK;
3621 slf_frame = slf_save;
3173 save_perl (aTHX_ coro); 3622 save_perl (aTHX_ coro);
3174 load_perl (aTHX_ current); 3623 load_perl (aTHX_ current);
3175 SPAGAIN; 3624 SPAGAIN;
3176 } 3625 }
3177 } 3626 }
… …
3182 PROTOTYPE: $ 3631 PROTOTYPE: $
3183 ALIAS: 3632 ALIAS:
3184 is_ready = CF_READY 3633 is_ready = CF_READY
3185 is_running = CF_RUNNING 3634 is_running = CF_RUNNING
3186 is_new = CF_NEW 3635 is_new = CF_NEW
3187 is_destroyed = CF_DESTROYED 3636 is_destroyed = CF_ZOMBIE
3637 is_zombie = CF_ZOMBIE
3188 is_suspended = CF_SUSPENDED 3638 is_suspended = CF_SUSPENDED
3189 CODE: 3639 CODE:
3190 RETVAL = boolSV (coro->flags & ix); 3640 RETVAL = boolSV (coro->flags & ix);
3191 OUTPUT: 3641 OUTPUT:
3192 RETVAL 3642 RETVAL
3193 3643
3194void 3644void
3195throw (Coro::State self, SV *throw = &PL_sv_undef) 3645throw (Coro::State self, SV *exception = &PL_sv_undef)
3196 PROTOTYPE: $;$ 3646 PROTOTYPE: $;$
3197 CODE: 3647 CODE:
3198{ 3648{
3199 struct coro *current = SvSTATE_current; 3649 struct coro *current = SvSTATE_current;
3200 SV **throwp = self == current ? &CORO_THROW : &self->except; 3650 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3201 SvREFCNT_dec (*throwp); 3651 SvREFCNT_dec (*exceptionp);
3202 SvGETMAGIC (throw); 3652 SvGETMAGIC (exception);
3203 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3653 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3204} 3654}
3205 3655
3206void 3656void
3207api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3657api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3208 PROTOTYPE: $;$ 3658 PROTOTYPE: $;$
… …
3263 3713
3264void 3714void
3265cancel (Coro::State self) 3715cancel (Coro::State self)
3266 CODE: 3716 CODE:
3267 coro_state_destroy (aTHX_ self); 3717 coro_state_destroy (aTHX_ self);
3268 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */ 3718
3719SV *
3720enable_times (int enabled = enable_times)
3721 CODE:
3722{
3723 RETVAL = boolSV (enable_times);
3724
3725 if (enabled != enable_times)
3726 {
3727 enable_times = enabled;
3728
3729 coro_times_update ();
3730 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3731 }
3732}
3733 OUTPUT:
3734 RETVAL
3735
3736void
3737times (Coro::State self)
3738 PPCODE:
3739{
3740 struct coro *current = SvSTATE (coro_current);
3741
3742 if (ecb_expect_false (current == self))
3743 {
3744 coro_times_update ();
3745 coro_times_add (SvSTATE (coro_current));
3746 }
3747
3748 EXTEND (SP, 2);
3749 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3750 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3751
3752 if (ecb_expect_false (current == self))
3753 coro_times_sub (SvSTATE (coro_current));
3754}
3755
3756void
3757swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3758 CODE:
3759{
3760 struct coro *current = SvSTATE_current;
3761
3762 if (current == coro)
3763 SWAP_SVS (current);
3764
3765 if (!coro->swap_sv)
3766 coro->swap_sv = newAV ();
3767
3768 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3769 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3770
3771 if (current == coro)
3772 SWAP_SVS (current);
3773}
3269 3774
3270 3775
3271MODULE = Coro::State PACKAGE = Coro 3776MODULE = Coro::State PACKAGE = Coro
3272 3777
3273BOOT: 3778BOOT:
3274{ 3779{
3275 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3780 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3276 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3781 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3277 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 3782 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3278 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3279 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3783 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3280 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3784 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3281 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3785 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3282 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3786 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3283 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 3787 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3284 3788
3285 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3789 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3286 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3790 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3287 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3791 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3288 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3792 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3289 3793
3290 coro_stash = gv_stashpv ("Coro", TRUE); 3794 coro_stash = gv_stashpv ("Coro", TRUE);
3291 3795
3292 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 3796 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3293 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 3797 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3294 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); 3798 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
… …
3312 sv_setiv (sv, (IV)&coroapi); 3816 sv_setiv (sv, (IV)&coroapi);
3313 SvREADONLY_on (sv); 3817 SvREADONLY_on (sv);
3314 } 3818 }
3315} 3819}
3316 3820
3821SV *
3822async (...)
3823 PROTOTYPE: &@
3824 CODE:
3825 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3826 api_ready (aTHX_ RETVAL);
3827 OUTPUT:
3828 RETVAL
3829
3830void
3831_destroy (Coro::State coro)
3832 CODE:
3833 /* used by the manager thread */
3834 coro_state_destroy (aTHX_ coro);
3835
3836void
3837on_destroy (Coro::State coro, SV *cb)
3838 CODE:
3839 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3840
3841void
3842join (...)
3843 CODE:
3844 CORO_EXECUTE_SLF_XS (slf_init_join);
3845
3317void 3846void
3318terminate (...) 3847terminate (...)
3319 CODE: 3848 CODE:
3320 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3849 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3850
3851void
3852cancel (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3855
3856int
3857safe_cancel (Coro::State self, ...)
3858 C_ARGS: aTHX_ self, &ST (1), items - 1
3321 3859
3322void 3860void
3323schedule (...) 3861schedule (...)
3324 CODE: 3862 CODE:
3325 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3863 CORO_EXECUTE_SLF_XS (slf_init_schedule);
… …
3355_set_readyhook (SV *hook) 3893_set_readyhook (SV *hook)
3356 PROTOTYPE: $ 3894 PROTOTYPE: $
3357 CODE: 3895 CODE:
3358 SvREFCNT_dec (coro_readyhook); 3896 SvREFCNT_dec (coro_readyhook);
3359 SvGETMAGIC (hook); 3897 SvGETMAGIC (hook);
3898 if (SvOK (hook))
3899 {
3360 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3900 coro_readyhook = newSVsv (hook);
3901 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3902 }
3903 else
3904 {
3905 coro_readyhook = 0;
3906 CORO_READYHOOK = 0;
3907 }
3361 3908
3362int 3909int
3363prio (Coro::State coro, int newprio = 0) 3910prio (Coro::State coro, int newprio = 0)
3364 PROTOTYPE: $;$ 3911 PROTOTYPE: $;$
3365 ALIAS: 3912 ALIAS:
… …
3429 for (i = 1; i < items; ++i) 3976 for (i = 1; i < items; ++i)
3430 av_push (av, SvREFCNT_inc_NN (ST (i))); 3977 av_push (av, SvREFCNT_inc_NN (ST (i)));
3431 3978
3432 if ((SV *)hv == &PL_sv_undef) 3979 if ((SV *)hv == &PL_sv_undef)
3433 { 3980 {
3434 PUSHMARK (SP); 3981 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3435 EXTEND (SP, 2);
3436 PUSHs (sv_Coro);
3437 PUSHs ((SV *)cv_pool_handler);
3438 PUTBACK;
3439 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3440 SPAGAIN;
3441
3442 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 3982 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3983 SvREFCNT_dec (sv);
3443 } 3984 }
3444 3985
3445 { 3986 {
3446 struct coro *coro = SvSTATE_hv (hv); 3987 struct coro *coro = SvSTATE_hv (hv);
3447 3988
… …
3481 CODE: 4022 CODE:
3482{ 4023{
3483 struct coro *coro = SvSTATE_current; 4024 struct coro *coro = SvSTATE_current;
3484 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4025 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3485 4026
3486 block = (SV *)coro_sv_2cv (aTHX_ block); 4027 block = s_get_cv_croak (block);
3487 4028
3488 if (!*avp) 4029 if (!*avp)
3489 *avp = newAV (); 4030 *avp = newAV ();
3490 4031
3491 av_push (*avp, SvREFCNT_inc (block)); 4032 av_push (*avp, SvREFCNT_inc (block));
… …
3691 4232
3692void 4233void
3693_register (char *target, char *proto, SV *req) 4234_register (char *target, char *proto, SV *req)
3694 CODE: 4235 CODE:
3695{ 4236{
3696 CV *req_cv = coro_sv_2cv (aTHX_ req); 4237 SV *req_cv = s_get_cv_croak (req);
3697 /* newXSproto doesn't return the CV on 5.8 */ 4238 /* newXSproto doesn't return the CV on 5.8 */
3698 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4239 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3699 sv_setpv ((SV *)slf_cv, proto); 4240 sv_setpv ((SV *)slf_cv, proto);
3700 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4241 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3701} 4242}
3702 4243
4244MODULE = Coro::State PACKAGE = Coro::Select
4245
4246void
4247patch_pp_sselect ()
4248 CODE:
4249 if (!coro_old_pp_sselect)
4250 {
4251 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4252 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4253 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4254 }
4255
4256void
4257unpatch_pp_sselect ()
4258 CODE:
4259 if (coro_old_pp_sselect)
4260 {
4261 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4262 coro_old_pp_sselect = 0;
4263 }
4264

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