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Comparing Coro/Coro/State.xs (file contents):
Revision 1.320 by root, Fri Nov 21 07:29:04 2008 UTC vs.
Revision 1.414 by root, Wed Jun 29 16:08:31 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) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && 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
107/* 5.8.7 */
108#ifndef SvRV_set
109# define SvRV_set(s,v) SvRV(s) = (v)
110#endif 70#endif
111 71
112#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
113# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
114#endif 74#endif
… …
130#else 90#else
131# define dSTACKLEVEL volatile void *stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
132# define STACKLEVEL ((void *)&stacklevel) 92# define STACKLEVEL ((void *)&stacklevel)
133#endif 93#endif
134 94
135#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
136
137#if __GNUC__ >= 3
138# define attribute(x) __attribute__(x)
139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
141#else
142# define attribute(x)
143# define expect(expr,value) (expr)
144# define INLINE static
145#endif
146
147#define expect_false(expr) expect ((expr) != 0, 0)
148#define expect_true(expr) expect ((expr) != 0, 1)
149
150#define NOINLINE attribute ((noinline))
151 96
152#include "CoroAPI.h" 97#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */ 98#define GCoroAPI (&coroapi) /* very sneaky */
154 99
155#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
156# if CORO_PTHREAD 101# if CORO_PTHREAD
157static void *coro_thx; 102static void *coro_thx;
158# endif 103# endif
159#endif 104#endif
160 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
161static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
162 121
163/* we hijack an hopefully unused CV flag for our purposes */ 122/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000 123#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX); 124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
166 126
167static U32 cctx_gen; 127static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
169static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
170static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
… …
172static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174 134
175static AV *av_destroy; /* destruction queue */ 135static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */ 136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
177 138
178static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
179static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
180static SV *rv_diehook; 141static SV *rv_diehook;
181static SV *rv_warnhook; 142static SV *rv_warnhook;
… …
186static SV *sv_pool_size; 147static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */ 148static SV *sv_async_pool_idle; /* description string */
188static AV *av_async_pool; /* idle pool */ 149static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */ 150static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler; 151static CV *cv_pool_handler;
191static CV *cv_coro_state_new;
192 152
193/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
194static SV *sv_activity; 154static SV *sv_activity;
195 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
196static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
197static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
198 164
199enum { 165enum
166{
200 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
201 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
202 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
203 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
204 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
225 int valgrind_id; 192 int valgrind_id;
226#endif 193#endif
227 unsigned char flags; 194 unsigned char flags;
228} coro_cctx; 195} coro_cctx;
229 196
197static coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
201static MGVTBL coro_state_vtbl;
202
230enum { 203enum
204{
231 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
232 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
233 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
234 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
210 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
235}; 211};
236 212
237/* the structure where most of the perl state is stored, overlaid on the cxstack */ 213/* the structure where most of the perl state is stored, overlaid on the cxstack */
238typedef struct 214typedef struct
239{ 215{
240 SV *defsv;
241 AV *defav;
242 SV *errsv;
243 SV *irsgv;
244#define VAR(name,type) type name; 216#define VARx(name,expr,type) type name;
245# include "state.h" 217# include "state.h"
246#undef VAR 218#undef VARx
247} perl_slots; 219} perl_slots;
248 220
221/* how many context stack entries do we need for perl_slots */
249#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
250 223
251/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
252struct coro { 225struct coro
226{
253 /* the C coroutine allocated to this perl coroutine, if any */ 227 /* the C coroutine allocated to this perl coroutine, if any */
254 coro_cctx *cctx; 228 coro_cctx *cctx;
229
230 /* ready queue */
231 struct coro *next_ready;
255 232
256 /* state data */ 233 /* state data */
257 struct CoroSLF slf_frame; /* saved slf frame */ 234 struct CoroSLF slf_frame; /* saved slf frame */
258 AV *mainstack; 235 AV *mainstack;
259 perl_slots *slot; /* basically the saved sp */ 236 perl_slots *slot; /* basically the saved sp */
260 237
261 CV *startcv; /* the CV to execute */ 238 CV *startcv; /* the CV to execute */
262 AV *args; /* data associated with this coroutine (initial args) */ 239 AV *args; /* data associated with this coroutine (initial args) */
263 int refcnt; /* coroutines are refcounted, yes */
264 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
265 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
266 void (*on_destroy)(pTHX_ struct coro *coro);
267 242
268 /* statistics */ 243 /* statistics */
269 int usecount; /* number of transfers to this coro */ 244 int usecount; /* number of transfers to this coro */
270 245
271 /* coro process data */ 246 /* coro process data */
272 int prio; 247 int prio;
273 SV *except; /* exception to be thrown */ 248 SV *except; /* exception to be thrown */
274 SV *rouse_cb; 249 SV *rouse_cb; /* last rouse callback */
250 AV *on_destroy; /* callbacks or coros to notify on destroy */
251 AV *status; /* the exit status list */
275 252
276 /* async_pool */ 253 /* async_pool */
277 SV *saved_deffh; 254 SV *saved_deffh;
278 SV *invoke_cb; 255 SV *invoke_cb;
279 AV *invoke_av; 256 AV *invoke_av;
280 257
258 /* on_enter/on_leave */
259 AV *on_enter;
260 AV *on_leave;
261
262 /* swap_sv */
263 AV *swap_sv;
264
265 /* times */
266 coro_ts t_cpu, t_real;
267
281 /* linked list */ 268 /* linked list */
282 struct coro *next, *prev; 269 struct coro *next, *prev;
283}; 270};
284 271
285typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
287 274
288/* the following variables are effectively part of the perl context */ 275/* the following variables are effectively part of the perl context */
289/* and get copied between struct coro and these variables */ 276/* and get copied between struct coro and these variables */
290/* the mainr easonw e don't support windows process emulation */ 277/* the main reason we don't support windows process emulation */
291static struct CoroSLF slf_frame; /* the current slf frame */ 278static struct CoroSLF slf_frame; /* the current slf frame */
292 279
293/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
294 281
295#define PRIO_MAX 3 282#define CORO_PRIO_MAX 3
296#define PRIO_HIGH 1 283#define CORO_PRIO_HIGH 1
297#define PRIO_NORMAL 0 284#define CORO_PRIO_NORMAL 0
298#define PRIO_LOW -1 285#define CORO_PRIO_LOW -1
299#define PRIO_IDLE -3 286#define CORO_PRIO_IDLE -3
300#define PRIO_MIN -4 287#define CORO_PRIO_MIN -4
301 288
302/* for Coro.pm */ 289/* for Coro.pm */
303static SV *coro_current; 290static SV *coro_current;
304static SV *coro_readyhook; 291static SV *coro_readyhook;
305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
306static CV *cv_coro_run, *cv_coro_terminate; 293static CV *cv_coro_run;
307static struct coro *coro_first; 294static struct coro *coro_first;
308#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
309 296
297/** JIT *********************************************************************/
298
299#if CORO_JIT
300 /* APPLE doesn't have HAVE_MMAP though */
301 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
302 #ifndef CORO_JIT_TYPE
303 #if __x86_64 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "amd64-unix"
305 #elif __i386 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "x86-unix"
307 #endif
308 #endif
309#endif
310
311#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
312 #undef CORO_JIT
313#endif
314
315#if CORO_JIT
316 typedef void (*load_save_perl_slots_type)(perl_slots *);
317 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
318#endif
319
320/** Coro::Select ************************************************************/
321
322static OP *(*coro_old_pp_sselect) (pTHX);
323static SV *coro_select_select;
324
325/* horrible hack, but if it works... */
326static OP *
327coro_pp_sselect (pTHX)
328{
329 dSP;
330 PUSHMARK (SP - 4); /* fake argument list */
331 XPUSHs (coro_select_select);
332 PUTBACK;
333
334 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
335 PL_op->op_flags |= OPf_STACKED;
336 PL_op->op_private = 0;
337 return PL_ppaddr [OP_ENTERSUB](aTHX);
338}
339
340/** time stuff **************************************************************/
341
342#ifdef HAS_GETTIMEOFDAY
343
344ecb_inline void
345coro_u2time (pTHX_ UV ret[2])
346{
347 struct timeval tv;
348 gettimeofday (&tv, 0);
349
350 ret [0] = tv.tv_sec;
351 ret [1] = tv.tv_usec;
352}
353
354ecb_inline double
355coro_nvtime (void)
356{
357 struct timeval tv;
358 gettimeofday (&tv, 0);
359
360 return tv.tv_sec + tv.tv_usec * 1e-6;
361}
362
363ecb_inline void
364time_init (pTHX)
365{
366 nvtime = coro_nvtime;
367 u2time = coro_u2time;
368}
369
370#else
371
372ecb_inline void
373time_init (pTHX)
374{
375 SV **svp;
376
377 require_pv ("Time/HiRes.pm");
378
379 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
380
381 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
382 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
383
384 nvtime = INT2PTR (double (*)(), SvIV (*svp));
385
386 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
387 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
388}
389
390#endif
391
310/** lowlevel stuff **********************************************************/ 392/** lowlevel stuff **********************************************************/
311 393
312static SV * 394static SV * ecb_noinline
313coro_get_sv (pTHX_ const char *name, int create) 395coro_get_sv (pTHX_ const char *name, int create)
314{ 396{
315#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
316 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 398 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
317 get_sv (name, create); 399 get_sv (name, create);
318#endif 400#endif
319 return get_sv (name, create); 401 return get_sv (name, create);
320} 402}
321 403
322static AV * 404static AV * ecb_noinline
323coro_get_av (pTHX_ const char *name, int create) 405coro_get_av (pTHX_ const char *name, int create)
324{ 406{
325#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
326 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 408 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
327 get_av (name, create); 409 get_av (name, create);
328#endif 410#endif
329 return get_av (name, create); 411 return get_av (name, create);
330} 412}
331 413
332static HV * 414static HV * ecb_noinline
333coro_get_hv (pTHX_ const char *name, int create) 415coro_get_hv (pTHX_ const char *name, int create)
334{ 416{
335#if PERL_VERSION_ATLEAST (5,10,0) 417#if PERL_VERSION_ATLEAST (5,10,0)
336 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 418 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
337 get_hv (name, create); 419 get_hv (name, create);
338#endif 420#endif
339 return get_hv (name, create); 421 return get_hv (name, create);
340} 422}
341 423
342/* may croak */ 424ecb_inline void
343INLINE CV * 425coro_times_update (void)
344coro_sv_2cv (pTHX_ SV *sv)
345{ 426{
346 HV *st; 427#ifdef coro_clock_gettime
347 GV *gvp; 428 struct timespec ts;
348 return sv_2cv (sv, &st, &gvp, 0);
349}
350 429
351static AV * 430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
432 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
433
434 ts.tv_sec = ts.tv_nsec = 0;
435 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
436 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
437#else
438 dTHX;
439 UV tv[2];
440
441 u2time (aTHX_ tv);
442 time_real [0] = tv [0];
443 time_real [1] = tv [1] * 1000;
444#endif
445}
446
447ecb_inline void
448coro_times_add (struct coro *c)
449{
450 c->t_real [1] += time_real [1];
451 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
452 c->t_real [0] += time_real [0];
453
454 c->t_cpu [1] += time_cpu [1];
455 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
456 c->t_cpu [0] += time_cpu [0];
457}
458
459ecb_inline void
460coro_times_sub (struct coro *c)
461{
462 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
463 c->t_real [1] -= time_real [1];
464 c->t_real [0] -= time_real [0];
465
466 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
467 c->t_cpu [1] -= time_cpu [1];
468 c->t_cpu [0] -= time_cpu [0];
469}
470
471/*****************************************************************************/
472/* magic glue */
473
474#define CORO_MAGIC_type_cv 26
475#define CORO_MAGIC_type_state PERL_MAGIC_ext
476
477#define CORO_MAGIC_NN(sv, type) \
478 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
479 ? SvMAGIC (sv) \
480 : mg_find (sv, type))
481
482#define CORO_MAGIC(sv, type) \
483 (ecb_expect_true (SvMAGIC (sv)) \
484 ? CORO_MAGIC_NN (sv, type) \
485 : 0)
486
487#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
488#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
489
490ecb_inline MAGIC *
491SvSTATEhv_p (pTHX_ SV *coro)
492{
493 MAGIC *mg;
494
495 if (ecb_expect_true (
496 SvTYPE (coro) == SVt_PVHV
497 && (mg = CORO_MAGIC_state (coro))
498 && mg->mg_virtual == &coro_state_vtbl
499 ))
500 return mg;
501
502 return 0;
503}
504
505ecb_inline struct coro *
506SvSTATE_ (pTHX_ SV *coro)
507{
508 MAGIC *mg;
509
510 if (SvROK (coro))
511 coro = SvRV (coro);
512
513 mg = SvSTATEhv_p (aTHX_ coro);
514 if (!mg)
515 croak ("Coro::State object required");
516
517 return (struct coro *)mg->mg_ptr;
518}
519
520#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
521
522/* faster than SvSTATE, but expects a coroutine hv */
523#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
524#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
525
526/*****************************************************************************/
527/* padlist management and caching */
528
529ecb_inline AV *
352coro_clone_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
353{ 531{
354 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
355 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
356 534
357 newpadlist = newAV (); 535 newpadlist = newAV ();
… …
362 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 540 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
363#endif 541#endif
364 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 542 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
365 --AvFILLp (padlist); 543 --AvFILLp (padlist);
366 544
367 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 545 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
368 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
369 547
370 return newpadlist; 548 return newpadlist;
371} 549}
372 550
373static void 551ecb_inline void
374free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
375{ 553{
376 /* may be during global destruction */ 554 /* may be during global destruction */
377 if (SvREFCNT (padlist)) 555 if (!IN_DESTRUCT)
378 { 556 {
379 I32 i = AvFILLp (padlist); 557 I32 i = AvFILLp (padlist);
380 while (i >= 0) 558
559 while (i > 0) /* special-case index 0 */
381 { 560 {
382 SV **svp = av_fetch (padlist, i--, FALSE); 561 /* we try to be extra-careful here */
383 if (svp) 562 AV *av = (AV *)AvARRAY (padlist)[i--];
384 { 563 I32 j = AvFILLp (av);
385 SV *sv; 564
386 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 565 while (j >= 0)
566 SvREFCNT_dec (AvARRAY (av)[j--]);
567
568 AvFILLp (av) = -1;
387 SvREFCNT_dec (sv); 569 SvREFCNT_dec (av);
388
389 SvREFCNT_dec (*svp);
390 }
391 } 570 }
392 571
572 SvREFCNT_dec (AvARRAY (padlist)[0]);
573
574 AvFILLp (padlist) = -1;
393 SvREFCNT_dec ((SV*)padlist); 575 SvREFCNT_dec ((SV*)padlist);
394 } 576 }
395} 577}
396 578
397static int 579static int
398coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 580coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
399{ 581{
400 AV *padlist; 582 AV *padlist;
401 AV *av = (AV *)mg->mg_obj; 583 AV *av = (AV *)mg->mg_obj;
584
585 /* perl manages to free our internal AV and _then_ call us */
586 if (IN_DESTRUCT)
587 return 0;
402 588
403 /* casting is fun. */ 589 /* casting is fun. */
404 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 590 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
405 free_padlist (aTHX_ padlist); 591 free_padlist (aTHX_ padlist);
406 592
407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 593 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
408 594
409 return 0; 595 return 0;
410} 596}
411
412#define CORO_MAGIC_type_cv 26
413#define CORO_MAGIC_type_state PERL_MAGIC_ext
414 597
415static MGVTBL coro_cv_vtbl = { 598static MGVTBL coro_cv_vtbl = {
416 0, 0, 0, 0, 599 0, 0, 0, 0,
417 coro_cv_free 600 coro_cv_free
418}; 601};
419 602
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
425#define CORO_MAGIC(sv, type) \
426 (expect_true (SvMAGIC (sv)) \
427 ? CORO_MAGIC_NN (sv, type) \
428 : 0)
429
430#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
431#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
432
433INLINE struct coro *
434SvSTATE_ (pTHX_ SV *coro)
435{
436 HV *stash;
437 MAGIC *mg;
438
439 if (SvROK (coro))
440 coro = SvRV (coro);
441
442 if (expect_false (SvTYPE (coro) != SVt_PVHV))
443 croak ("Coro::State object required");
444
445 stash = SvSTASH (coro);
446 if (expect_false (stash != coro_stash && stash != coro_state_stash))
447 {
448 /* very slow, but rare, check */
449 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
450 croak ("Coro::State object required");
451 }
452
453 mg = CORO_MAGIC_state (coro);
454 return (struct coro *)mg->mg_ptr;
455}
456
457#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
458
459/* faster than SvSTATE, but expects a coroutine hv */
460#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
461#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
462
463/* the next two functions merely cache the padlists */ 603/* the next two functions merely cache the padlists */
464static void 604ecb_inline void
465get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
466{ 606{
467 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
468 AV *av; 608 AV *av;
469 609
470 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 610 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
471 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 611 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
472 else 612 else
473 { 613 {
474#if CORO_PREFER_PERL_FUNCTIONS 614#if CORO_PREFER_PERL_FUNCTIONS
475 /* this is probably cleaner? but also slower! */ 615 /* this is probably cleaner? but also slower! */
… …
477 CV *cp = Perl_cv_clone (aTHX_ cv); 617 CV *cp = Perl_cv_clone (aTHX_ cv);
478 CvPADLIST (cv) = CvPADLIST (cp); 618 CvPADLIST (cv) = CvPADLIST (cp);
479 CvPADLIST (cp) = 0; 619 CvPADLIST (cp) = 0;
480 SvREFCNT_dec (cp); 620 SvREFCNT_dec (cp);
481#else 621#else
482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
483#endif 623#endif
484 } 624 }
485} 625}
486 626
487static void 627ecb_inline void
488put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
489{ 629{
490 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
491 AV *av; 631 AV *av;
492 632
493 if (expect_false (!mg)) 633 if (ecb_expect_false (!mg))
494 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 634 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
495 635
496 av = (AV *)mg->mg_obj; 636 av = (AV *)mg->mg_obj;
497 637
498 if (expect_false (AvFILLp (av) >= AvMAX (av))) 638 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
499 av_extend (av, AvMAX (av) + 1); 639 av_extend (av, AvFILLp (av) + 1);
500 640
501 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
502} 642}
503 643
504/** load & save, init *******************************************************/ 644/** load & save, init *******************************************************/
645
646/* swap sv heads, at least logically */
647static void
648swap_svs (pTHX_ Coro__State c)
649{
650 int i;
651
652 for (i = 0; i <= AvFILLp (c->swap_sv); )
653 {
654 SV *a = AvARRAY (c->swap_sv)[i++];
655 SV *b = AvARRAY (c->swap_sv)[i++];
656
657 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
658 SV tmp;
659
660 /* swap sv_any */
661 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
662
663 /* swap sv_flags */
664 SvFLAGS (&tmp) = SvFLAGS (a);
665 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
666 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
667
668#if PERL_VERSION_ATLEAST (5,10,0)
669 /* perl 5.10 complicates this _quite_ a bit, but it also is
670 * much faster, so no quarrels here. alternatively, we could
671 * sv_upgrade to avoid this.
672 */
673 {
674 /* swap sv_u */
675 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
676
677 /* if SvANY points to the head, we need to adjust the pointers,
678 * as the pointer for a still points to b, and maybe vice versa.
679 */
680 #define svany_in_head(type) \
681 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
682
683 if (svany_in_head (SvTYPE (a)))
684 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
685
686 if (svany_in_head (SvTYPE (b)))
687 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
688 }
689#endif
690 }
691}
692
693#define SWAP_SVS(coro) \
694 if (ecb_expect_false ((coro)->swap_sv)) \
695 swap_svs (aTHX_ (coro))
696
697static void
698on_enterleave_call (pTHX_ SV *cb);
505 699
506static void 700static void
507load_perl (pTHX_ Coro__State c) 701load_perl (pTHX_ Coro__State c)
508{ 702{
509 perl_slots *slot = c->slot; 703 perl_slots *slot = c->slot;
510 c->slot = 0; 704 c->slot = 0;
511 705
512 PL_mainstack = c->mainstack; 706 PL_mainstack = c->mainstack;
513 707
514 GvSV (PL_defgv) = slot->defsv; 708#if CORO_JIT
515 GvAV (PL_defgv) = slot->defav; 709 load_perl_slots (slot);
516 GvSV (PL_errgv) = slot->errsv; 710#else
517 GvSV (irsgv) = slot->irsgv;
518
519 #define VAR(name,type) PL_ ## name = slot->name; 711 #define VARx(name,expr,type) expr = slot->name;
520 # include "state.h" 712 # include "state.h"
521 #undef VAR 713 #undef VARx
714#endif
522 715
523 { 716 {
524 dSP; 717 dSP;
525 718
526 CV *cv; 719 CV *cv;
527 720
528 /* now do the ugly restore mess */ 721 /* now do the ugly restore mess */
529 while (expect_true (cv = (CV *)POPs)) 722 while (ecb_expect_true (cv = (CV *)POPs))
530 { 723 {
531 put_padlist (aTHX_ cv); /* mark this padlist as available */ 724 put_padlist (aTHX_ cv); /* mark this padlist as available */
532 CvDEPTH (cv) = PTR2IV (POPs); 725 CvDEPTH (cv) = PTR2IV (POPs);
533 CvPADLIST (cv) = (AV *)POPs; 726 CvPADLIST (cv) = (AV *)POPs;
534 } 727 }
… …
536 PUTBACK; 729 PUTBACK;
537 } 730 }
538 731
539 slf_frame = c->slf_frame; 732 slf_frame = c->slf_frame;
540 CORO_THROW = c->except; 733 CORO_THROW = c->except;
734
735 if (ecb_expect_false (enable_times))
736 {
737 if (ecb_expect_false (!times_valid))
738 coro_times_update ();
739
740 coro_times_sub (c);
741 }
742
743 if (ecb_expect_false (c->on_enter))
744 {
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
748 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
749 }
750
751 SWAP_SVS (c);
541} 752}
542 753
543static void 754static void
544save_perl (pTHX_ Coro__State c) 755save_perl (pTHX_ Coro__State c)
545{ 756{
757 SWAP_SVS (c);
758
759 if (ecb_expect_false (c->on_leave))
760 {
761 int i;
762
763 for (i = AvFILLp (c->on_leave); i >= 0; --i)
764 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
765 }
766
767 times_valid = 0;
768
769 if (ecb_expect_false (enable_times))
770 {
771 coro_times_update (); times_valid = 1;
772 coro_times_add (c);
773 }
774
546 c->except = CORO_THROW; 775 c->except = CORO_THROW;
547 c->slf_frame = slf_frame; 776 c->slf_frame = slf_frame;
548 777
549 { 778 {
550 dSP; 779 dSP;
… …
559 788
560 XPUSHs (Nullsv); 789 XPUSHs (Nullsv);
561 /* this loop was inspired by pp_caller */ 790 /* this loop was inspired by pp_caller */
562 for (;;) 791 for (;;)
563 { 792 {
564 while (expect_true (cxix >= 0)) 793 while (ecb_expect_true (cxix >= 0))
565 { 794 {
566 PERL_CONTEXT *cx = &ccstk[cxix--]; 795 PERL_CONTEXT *cx = &ccstk[cxix--];
567 796
568 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 797 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
569 { 798 {
570 CV *cv = cx->blk_sub.cv; 799 CV *cv = cx->blk_sub.cv;
571 800
572 if (expect_true (CvDEPTH (cv))) 801 if (ecb_expect_true (CvDEPTH (cv)))
573 { 802 {
574 EXTEND (SP, 3); 803 EXTEND (SP, 3);
575 PUSHs ((SV *)CvPADLIST (cv)); 804 PUSHs ((SV *)CvPADLIST (cv));
576 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 805 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
577 PUSHs ((SV *)cv); 806 PUSHs ((SV *)cv);
… …
580 get_padlist (aTHX_ cv); 809 get_padlist (aTHX_ cv);
581 } 810 }
582 } 811 }
583 } 812 }
584 813
585 if (expect_true (top_si->si_type == PERLSI_MAIN)) 814 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
586 break; 815 break;
587 816
588 top_si = top_si->si_prev; 817 top_si = top_si->si_prev;
589 ccstk = top_si->si_cxstack; 818 ccstk = top_si->si_cxstack;
590 cxix = top_si->si_cxix; 819 cxix = top_si->si_cxix;
… …
592 821
593 PUTBACK; 822 PUTBACK;
594 } 823 }
595 824
596 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
597 /* we manually unroll here, as usually 2 slots is enough */ 826 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
598 if (SLOT_COUNT >= 1) CXINC;
599 if (SLOT_COUNT >= 2) CXINC;
600 if (SLOT_COUNT >= 3) CXINC;
601 { 827 {
602 int i; 828 unsigned int i;
829
603 for (i = 3; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
604 CXINC; 831 CXINC;
605 } 832
606 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 833 cxstack_ix -= SLOT_COUNT; /* undo allocation */
834 }
607 835
608 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
609 837
610 { 838 {
611 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
612 840
613 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
614 slot->defsv = DEFSV; 842 save_perl_slots (slot);
615 slot->errsv = ERRSV; 843#else
616 slot->irsgv = GvSV (irsgv);
617
618 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
619 # include "state.h" 845 # include "state.h"
620 #undef VAR 846 #undef VARx
847#endif
621 } 848 }
622} 849}
623 850
624/* 851/*
625 * allocate various perl stacks. This is almost an exact copy 852 * allocate various perl stacks. This is almost an exact copy
… …
631# define coro_init_stacks(thx) init_stacks () 858# define coro_init_stacks(thx) init_stacks ()
632#else 859#else
633static void 860static void
634coro_init_stacks (pTHX) 861coro_init_stacks (pTHX)
635{ 862{
636 PL_curstackinfo = new_stackinfo(32, 8); 863 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
637 PL_curstackinfo->si_type = PERLSI_MAIN; 864 PL_curstackinfo->si_type = PERLSI_MAIN;
638 PL_curstack = PL_curstackinfo->si_stack; 865 PL_curstack = PL_curstackinfo->si_stack;
639 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 866 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
640 867
641 PL_stack_base = AvARRAY(PL_curstack); 868 PL_stack_base = AvARRAY(PL_curstack);
… …
656#endif 883#endif
657 884
658 New(54,PL_scopestack,8,I32); 885 New(54,PL_scopestack,8,I32);
659 PL_scopestack_ix = 0; 886 PL_scopestack_ix = 0;
660 PL_scopestack_max = 8; 887 PL_scopestack_max = 8;
888#if HAS_SCOPESTACK_NAME
889 New(54,PL_scopestack_name,8,const char*);
890#endif
661 891
662 New(54,PL_savestack,24,ANY); 892 New(54,PL_savestack,24,ANY);
663 PL_savestack_ix = 0; 893 PL_savestack_ix = 0;
664 PL_savestack_max = 24; 894 PL_savestack_max = 24;
665 895
… …
693 } 923 }
694 924
695 Safefree (PL_tmps_stack); 925 Safefree (PL_tmps_stack);
696 Safefree (PL_markstack); 926 Safefree (PL_markstack);
697 Safefree (PL_scopestack); 927 Safefree (PL_scopestack);
928#if HAS_SCOPESTACK_NAME
929 Safefree (PL_scopestack_name);
930#endif
698 Safefree (PL_savestack); 931 Safefree (PL_savestack);
699#if !PERL_VERSION_ATLEAST (5,10,0) 932#if !PERL_VERSION_ATLEAST (5,10,0)
700 Safefree (PL_retstack); 933 Safefree (PL_retstack);
701#endif 934#endif
702} 935}
… …
748#endif 981#endif
749 982
750/* 983/*
751 * This overrides the default magic get method of %SIG elements. 984 * This overrides the default magic get method of %SIG elements.
752 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 985 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
753 * and instead of tryign to save and restore the hash elements, we just provide 986 * and instead of trying to save and restore the hash elements (extremely slow),
754 * readback here. 987 * we just provide our own readback here.
755 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
756 * not expecting this to actually change the hook. This is a potential problem
757 * when a schedule happens then, but we ignore this.
758 */ 988 */
759static int 989static int ecb_cold
760coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 990coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
761{ 991{
762 const char *s = MgPV_nolen_const (mg); 992 const char *s = MgPV_nolen_const (mg);
763 993
764 if (*s == '_') 994 if (*s == '_')
… …
776 } 1006 }
777 1007
778 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1008 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
779} 1009}
780 1010
781static int 1011static int ecb_cold
782coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
783{ 1013{
784 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
785 1015
786 if (*s == '_') 1016 if (*s == '_')
… …
800 } 1030 }
801 1031
802 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1032 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
803} 1033}
804 1034
805static int 1035static int ecb_cold
806coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1036coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
807{ 1037{
808 const char *s = MgPV_nolen_const (mg); 1038 const char *s = MgPV_nolen_const (mg);
809 1039
810 if (*s == '_') 1040 if (*s == '_')
… …
815 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1045 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
816 1046
817 if (svp) 1047 if (svp)
818 { 1048 {
819 SV *old = *svp; 1049 SV *old = *svp;
820 *svp = newSVsv (sv); 1050 *svp = SvOK (sv) ? newSVsv (sv) : 0;
821 SvREFCNT_dec (old); 1051 SvREFCNT_dec (old);
822 return 0; 1052 return 0;
823 } 1053 }
824 } 1054 }
825 1055
… …
843slf_check_repeat (pTHX_ struct CoroSLF *frame) 1073slf_check_repeat (pTHX_ struct CoroSLF *frame)
844{ 1074{
845 return 1; 1075 return 1;
846} 1076}
847 1077
848static UNOP coro_setup_op; 1078static UNOP init_perl_op;
849 1079
850static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1080ecb_noinline static void /* noinline to keep it out of the transfer fast path */
851coro_setup (pTHX_ struct coro *coro) 1081init_perl (pTHX_ struct coro *coro)
852{ 1082{
853 /* 1083 /*
854 * emulate part of the perl startup here. 1084 * emulate part of the perl startup here.
855 */ 1085 */
856 coro_init_stacks (aTHX); 1086 coro_init_stacks (aTHX);
857 1087
858 PL_runops = RUNOPS_DEFAULT; 1088 PL_runops = RUNOPS_DEFAULT;
859 PL_curcop = &PL_compiling; 1089 PL_curcop = &PL_compiling;
860 PL_in_eval = EVAL_NULL; 1090 PL_in_eval = EVAL_NULL;
861 PL_comppad = 0; 1091 PL_comppad = 0;
1092 PL_comppad_name = 0;
1093 PL_comppad_name_fill = 0;
1094 PL_comppad_name_floor = 0;
862 PL_curpm = 0; 1095 PL_curpm = 0;
863 PL_curpad = 0; 1096 PL_curpad = 0;
864 PL_localizing = 0; 1097 PL_localizing = 0;
865 PL_dirty = 0;
866 PL_restartop = 0; 1098 PL_restartop = 0;
867#if PERL_VERSION_ATLEAST (5,10,0) 1099#if PERL_VERSION_ATLEAST (5,10,0)
868 PL_parser = 0; 1100 PL_parser = 0;
869#endif 1101#endif
1102 PL_hints = 0;
870 1103
871 /* recreate the die/warn hooks */ 1104 /* recreate the die/warn hooks */
872 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1105 PL_diehook = SvREFCNT_inc (rv_diehook);
873 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1106 PL_warnhook = SvREFCNT_inc (rv_warnhook);
874 1107
875 GvSV (PL_defgv) = newSV (0); 1108 GvSV (PL_defgv) = newSV (0);
876 GvAV (PL_defgv) = coro->args; coro->args = 0; 1109 GvAV (PL_defgv) = coro->args; coro->args = 0;
877 GvSV (PL_errgv) = newSV (0); 1110 GvSV (PL_errgv) = newSV (0);
878 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1111 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1112 GvHV (PL_hintgv) = 0;
879 PL_rs = newSVsv (GvSV (irsgv)); 1113 PL_rs = newSVsv (GvSV (irsgv));
880 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1114 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
881 1115
882 { 1116 {
883 dSP; 1117 dSP;
… …
898 /* this newly created coroutine might be run on an existing cctx which most 1132 /* this newly created coroutine might be run on an existing cctx which most
899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1133 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
900 */ 1134 */
901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1135 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
902 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1136 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1137 slf_frame.destroy = 0;
903 1138
904 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1139 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
905 coro_setup_op.op_next = PL_op; 1140 init_perl_op.op_next = PL_op;
906 coro_setup_op.op_type = OP_ENTERSUB; 1141 init_perl_op.op_type = OP_ENTERSUB;
907 coro_setup_op.op_ppaddr = pp_slf; 1142 init_perl_op.op_ppaddr = pp_slf;
908 /* no flags etc. required, as an init function won't be called */ 1143 /* no flags etc. required, as an init function won't be called */
909 1144
910 PL_op = (OP *)&coro_setup_op; 1145 PL_op = (OP *)&init_perl_op;
911 1146
912 /* copy throw, in case it was set before coro_setup */ 1147 /* copy throw, in case it was set before init_perl */
913 CORO_THROW = coro->except; 1148 CORO_THROW = coro->except;
914}
915 1149
1150 SWAP_SVS (coro);
1151
1152 if (ecb_expect_false (enable_times))
1153 {
1154 coro_times_update ();
1155 coro_times_sub (coro);
1156 }
1157}
1158
916static void 1159static void
917coro_destruct (pTHX_ struct coro *coro) 1160coro_unwind_stacks (pTHX)
918{ 1161{
919 if (!IN_DESTRUCT) 1162 if (!IN_DESTRUCT)
920 { 1163 {
921 /* restore all saved variables and stuff */ 1164 /* restore all saved variables and stuff */
922 LEAVE_SCOPE (0); 1165 LEAVE_SCOPE (0);
… …
930 POPSTACK_TO (PL_mainstack); 1173 POPSTACK_TO (PL_mainstack);
931 1174
932 /* unwind main stack */ 1175 /* unwind main stack */
933 dounwind (-1); 1176 dounwind (-1);
934 } 1177 }
1178}
935 1179
936 SvREFCNT_dec (GvSV (PL_defgv)); 1180static void
937 SvREFCNT_dec (GvAV (PL_defgv)); 1181destroy_perl (pTHX_ struct coro *coro)
938 SvREFCNT_dec (GvSV (PL_errgv)); 1182{
939 SvREFCNT_dec (PL_defoutgv); 1183 SV *svf [9];
940 SvREFCNT_dec (PL_rs);
941 SvREFCNT_dec (GvSV (irsgv));
942 1184
943 SvREFCNT_dec (PL_diehook);
944 SvREFCNT_dec (PL_warnhook);
945 1185 {
1186 SV *old_current = SvRV (coro_current);
1187 struct coro *current = SvSTATE (old_current);
1188
1189 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1190
1191 save_perl (aTHX_ current);
1192
1193 /* this will cause transfer_check to croak on block*/
1194 SvRV_set (coro_current, (SV *)coro->hv);
1195
1196 load_perl (aTHX_ coro);
1197
1198 coro_unwind_stacks (aTHX);
1199
1200 /* restore swapped sv's */
1201 SWAP_SVS (coro);
1202
1203 coro_destruct_stacks (aTHX);
1204
1205 /* now save some sv's to be free'd later */
1206 svf [0] = GvSV (PL_defgv);
1207 svf [1] = (SV *)GvAV (PL_defgv);
1208 svf [2] = GvSV (PL_errgv);
1209 svf [3] = (SV *)PL_defoutgv;
1210 svf [4] = PL_rs;
1211 svf [5] = GvSV (irsgv);
1212 svf [6] = (SV *)GvHV (PL_hintgv);
1213 svf [7] = PL_diehook;
1214 svf [8] = PL_warnhook;
1215 assert (9 == sizeof (svf) / sizeof (*svf));
1216
1217 SvRV_set (coro_current, old_current);
1218
1219 load_perl (aTHX_ current);
1220 }
1221
1222 {
1223 unsigned int i;
1224
1225 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1226 SvREFCNT_dec (svf [i]);
1227
946 SvREFCNT_dec (coro->saved_deffh); 1228 SvREFCNT_dec (coro->saved_deffh);
947 SvREFCNT_dec (coro->rouse_cb); 1229 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb); 1230 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av); 1231 SvREFCNT_dec (coro->invoke_av);
950 1232 }
951 coro_destruct_stacks (aTHX);
952} 1233}
953 1234
954INLINE void 1235ecb_inline void
955free_coro_mortal (pTHX) 1236free_coro_mortal (pTHX)
956{ 1237{
957 if (expect_true (coro_mortal)) 1238 if (ecb_expect_true (coro_mortal))
958 { 1239 {
959 SvREFCNT_dec (coro_mortal); 1240 SvREFCNT_dec ((SV *)coro_mortal);
960 coro_mortal = 0; 1241 coro_mortal = 0;
961 } 1242 }
962} 1243}
963 1244
964static int 1245static int
965runops_trace (pTHX) 1246runops_trace (pTHX)
966{ 1247{
967 COP *oldcop = 0; 1248 COP *oldcop = 0;
968 int oldcxix = -2; 1249 int oldcxix = -2;
969 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
970 coro_cctx *cctx = coro->cctx;
971 1250
972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1251 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
973 { 1252 {
974 PERL_ASYNC_CHECK (); 1253 PERL_ASYNC_CHECK ();
975 1254
976 if (cctx->flags & CC_TRACE_ALL) 1255 if (cctx_current->flags & CC_TRACE_ALL)
977 { 1256 {
978 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1257 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
979 { 1258 {
980 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1259 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
981 SV **bot, **top; 1260 SV **bot, **top;
982 AV *av = newAV (); /* return values */ 1261 AV *av = newAV (); /* return values */
983 SV **cb; 1262 SV **cb;
… …
1020 1299
1021 if (PL_curcop != &PL_compiling) 1300 if (PL_curcop != &PL_compiling)
1022 { 1301 {
1023 SV **cb; 1302 SV **cb;
1024 1303
1025 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1304 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1026 { 1305 {
1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1306 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1028 1307
1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1308 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1030 { 1309 {
… …
1053 } 1332 }
1054 1333
1055 oldcxix = cxstack_ix; 1334 oldcxix = cxstack_ix;
1056 } 1335 }
1057 1336
1058 if (cctx->flags & CC_TRACE_LINE) 1337 if (cctx_current->flags & CC_TRACE_LINE)
1059 { 1338 {
1060 dSP; 1339 dSP;
1061 1340
1062 PL_runops = RUNOPS_DEFAULT; 1341 PL_runops = RUNOPS_DEFAULT;
1063 ENTER; 1342 ENTER;
… …
1082 1361
1083 TAINT_NOT; 1362 TAINT_NOT;
1084 return 0; 1363 return 0;
1085} 1364}
1086 1365
1087static struct coro_cctx *cctx_ssl_cctx;
1088static struct CoroSLF cctx_ssl_frame; 1366static struct CoroSLF cctx_ssl_frame;
1089 1367
1090static void 1368static void
1091slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1369slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1092{ 1370{
1093 ta->prev = (struct coro *)cctx_ssl_cctx;
1094 ta->next = 0; 1371 ta->prev = 0;
1095} 1372}
1096 1373
1097static int 1374static int
1098slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1375slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1099{ 1376{
… …
1101 1378
1102 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1379 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1103} 1380}
1104 1381
1105/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1382/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1106static void NOINLINE 1383static void ecb_noinline
1107cctx_prepare (pTHX_ coro_cctx *cctx) 1384cctx_prepare (pTHX)
1108{ 1385{
1109 PL_top_env = &PL_start_env; 1386 PL_top_env = &PL_start_env;
1110 1387
1111 if (cctx->flags & CC_TRACE) 1388 if (cctx_current->flags & CC_TRACE)
1112 PL_runops = runops_trace; 1389 PL_runops = runops_trace;
1113 1390
1114 /* we already must be executing an SLF op, there is no other valid way 1391 /* we already must be executing an SLF op, there is no other valid way
1115 * that can lead to creation of a new cctx */ 1392 * that can lead to creation of a new cctx */
1116 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1393 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1117 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1394 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1118 1395
1119 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1396 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1120 cctx_ssl_cctx = cctx;
1121 cctx_ssl_frame = slf_frame; 1397 cctx_ssl_frame = slf_frame;
1122 1398
1123 slf_frame.prepare = slf_prepare_set_stacklevel; 1399 slf_frame.prepare = slf_prepare_set_stacklevel;
1124 slf_frame.check = slf_check_set_stacklevel; 1400 slf_frame.check = slf_check_set_stacklevel;
1125} 1401}
1126 1402
1127/* the tail of transfer: execute stuff we can only do after a transfer */ 1403/* the tail of transfer: execute stuff we can only do after a transfer */
1128INLINE void 1404ecb_inline void
1129transfer_tail (pTHX) 1405transfer_tail (pTHX)
1130{ 1406{
1131 free_coro_mortal (aTHX); 1407 free_coro_mortal (aTHX);
1132} 1408}
1133 1409
… …
1148 /* normally we would need to skip the entersub here */ 1424 /* normally we would need to skip the entersub here */
1149 /* not doing so will re-execute it, which is exactly what we want */ 1425 /* not doing so will re-execute it, which is exactly what we want */
1150 /* PL_nop = PL_nop->op_next */ 1426 /* PL_nop = PL_nop->op_next */
1151 1427
1152 /* inject a fake subroutine call to cctx_init */ 1428 /* inject a fake subroutine call to cctx_init */
1153 cctx_prepare (aTHX_ (coro_cctx *)arg); 1429 cctx_prepare (aTHX);
1154 1430
1155 /* cctx_run is the alternative tail of transfer() */ 1431 /* cctx_run is the alternative tail of transfer() */
1156 transfer_tail (aTHX); 1432 transfer_tail (aTHX);
1157 1433
1158 /* somebody or something will hit me for both perl_run and PL_restartop */ 1434 /* somebody or something will hit me for both perl_run and PL_restartop */
1159 PL_restartop = PL_op; 1435 PL_restartop = PL_op;
1160 perl_run (PL_curinterp); 1436 perl_run (PL_curinterp);
1161 /* 1437 /*
1162 * Unfortunately, there is no way to get at the return values of the 1438 * Unfortunately, there is no way to get at the return values of the
1163 * coro body here, as perl_run destroys these 1439 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1440 * runtime errors here, as this is just a random interpreter, not a thread.
1164 */ 1441 */
1165 1442
1166 /* 1443 /*
1167 * If perl-run returns we assume exit() was being called or the coro 1444 * If perl-run returns we assume exit() was being called or the coro
1168 * fell off the end, which seems to be the only valid (non-bug) 1445 * fell off the end, which seems to be the only valid (non-bug)
1169 * reason for perl_run to return. We try to exit by jumping to the 1446 * reason for perl_run to return. We try to exit by jumping to the
1170 * bootstrap-time "top" top_env, as we cannot restore the "main" 1447 * bootstrap-time "top" top_env, as we cannot restore the "main"
1171 * coroutine as Coro has no such concept 1448 * coroutine as Coro has no such concept.
1449 * This actually isn't valid with the pthread backend, but OSes requiring
1450 * that backend are too broken to do it in a standards-compliant way.
1172 */ 1451 */
1173 PL_top_env = main_top_env; 1452 PL_top_env = main_top_env;
1174 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1453 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1175 } 1454 }
1176} 1455}
1177 1456
1178static coro_cctx * 1457static coro_cctx *
1179cctx_new () 1458cctx_new (void)
1180{ 1459{
1181 coro_cctx *cctx; 1460 coro_cctx *cctx;
1182 1461
1183 ++cctx_count; 1462 ++cctx_count;
1184 New (0, cctx, 1, coro_cctx); 1463 New (0, cctx, 1, coro_cctx);
… …
1190 return cctx; 1469 return cctx;
1191} 1470}
1192 1471
1193/* create a new cctx only suitable as source */ 1472/* create a new cctx only suitable as source */
1194static coro_cctx * 1473static coro_cctx *
1195cctx_new_empty () 1474cctx_new_empty (void)
1196{ 1475{
1197 coro_cctx *cctx = cctx_new (); 1476 coro_cctx *cctx = cctx_new ();
1198 1477
1199 cctx->sptr = 0; 1478 cctx->sptr = 0;
1200 coro_create (&cctx->cctx, 0, 0, 0, 0); 1479 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1202 return cctx; 1481 return cctx;
1203} 1482}
1204 1483
1205/* create a new cctx suitable as destination/running a perl interpreter */ 1484/* create a new cctx suitable as destination/running a perl interpreter */
1206static coro_cctx * 1485static coro_cctx *
1207cctx_new_run () 1486cctx_new_run (void)
1208{ 1487{
1209 coro_cctx *cctx = cctx_new (); 1488 coro_cctx *cctx = cctx_new ();
1210 void *stack_start; 1489 void *stack_start;
1211 size_t stack_size; 1490 size_t stack_size;
1212 1491
1213#if HAVE_MMAP 1492#if HAVE_MMAP
1214 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1493 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1215 /* mmap supposedly does allocate-on-write for us */ 1494 /* mmap supposedly does allocate-on-write for us */
1216 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1495 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1217 1496
1218 if (cctx->sptr != (void *)-1) 1497 if (cctx->sptr != (void *)-1)
1219 { 1498 {
1220 #if CORO_STACKGUARD 1499 #if CORO_STACKGUARD
1221 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1500 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1253cctx_destroy (coro_cctx *cctx) 1532cctx_destroy (coro_cctx *cctx)
1254{ 1533{
1255 if (!cctx) 1534 if (!cctx)
1256 return; 1535 return;
1257 1536
1537 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1538
1258 --cctx_count; 1539 --cctx_count;
1259 coro_destroy (&cctx->cctx); 1540 coro_destroy (&cctx->cctx);
1260 1541
1261 /* coro_transfer creates new, empty cctx's */ 1542 /* coro_transfer creates new, empty cctx's */
1262 if (cctx->sptr) 1543 if (cctx->sptr)
… …
1280#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1561#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1281 1562
1282static coro_cctx * 1563static coro_cctx *
1283cctx_get (pTHX) 1564cctx_get (pTHX)
1284{ 1565{
1285 while (expect_true (cctx_first)) 1566 while (ecb_expect_true (cctx_first))
1286 { 1567 {
1287 coro_cctx *cctx = cctx_first; 1568 coro_cctx *cctx = cctx_first;
1288 cctx_first = cctx->next; 1569 cctx_first = cctx->next;
1289 --cctx_idle; 1570 --cctx_idle;
1290 1571
1291 if (expect_true (!CCTX_EXPIRED (cctx))) 1572 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1292 return cctx; 1573 return cctx;
1293 1574
1294 cctx_destroy (cctx); 1575 cctx_destroy (cctx);
1295 } 1576 }
1296 1577
… …
1301cctx_put (coro_cctx *cctx) 1582cctx_put (coro_cctx *cctx)
1302{ 1583{
1303 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1584 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1304 1585
1305 /* free another cctx if overlimit */ 1586 /* free another cctx if overlimit */
1306 if (expect_false (cctx_idle >= cctx_max_idle)) 1587 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1307 { 1588 {
1308 coro_cctx *first = cctx_first; 1589 coro_cctx *first = cctx_first;
1309 cctx_first = first->next; 1590 cctx_first = first->next;
1310 --cctx_idle; 1591 --cctx_idle;
1311 1592
… …
1322static void 1603static void
1323transfer_check (pTHX_ struct coro *prev, struct coro *next) 1604transfer_check (pTHX_ struct coro *prev, struct coro *next)
1324{ 1605{
1325 /* TODO: throwing up here is considered harmful */ 1606 /* TODO: throwing up here is considered harmful */
1326 1607
1327 if (expect_true (prev != next)) 1608 if (ecb_expect_true (prev != next))
1328 { 1609 {
1329 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1610 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1330 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1611 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1331 1612
1332 if (expect_false (next->flags & CF_RUNNING)) 1613 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1333 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1334
1335 if (expect_false (next->flags & CF_DESTROYED))
1336 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1614 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1337 1615
1338#if !PERL_VERSION_ATLEAST (5,10,0) 1616#if !PERL_VERSION_ATLEAST (5,10,0)
1339 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1617 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1340 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1618 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1341#endif 1619#endif
1342 } 1620 }
1343} 1621}
1344 1622
1345/* always use the TRANSFER macro */ 1623/* always use the TRANSFER macro */
1346static void NOINLINE /* noinline so we have a fixed stackframe */ 1624static void ecb_noinline /* noinline so we have a fixed stackframe */
1347transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1625transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1348{ 1626{
1349 dSTACKLEVEL; 1627 dSTACKLEVEL;
1350 1628
1351 /* sometimes transfer is only called to set idle_sp */ 1629 /* sometimes transfer is only called to set idle_sp */
1352 if (expect_false (!next)) 1630 if (ecb_expect_false (!prev))
1353 { 1631 {
1354 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1632 cctx_current->idle_sp = STACKLEVEL;
1355 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1633 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1356 } 1634 }
1357 else if (expect_true (prev != next)) 1635 else if (ecb_expect_true (prev != next))
1358 { 1636 {
1359 coro_cctx *prev__cctx; 1637 coro_cctx *cctx_prev;
1360 1638
1361 if (expect_false (prev->flags & CF_NEW)) 1639 if (ecb_expect_false (prev->flags & CF_NEW))
1362 { 1640 {
1363 /* create a new empty/source context */ 1641 /* create a new empty/source context */
1364 prev->cctx = cctx_new_empty ();
1365 prev->flags &= ~CF_NEW; 1642 prev->flags &= ~CF_NEW;
1366 prev->flags |= CF_RUNNING; 1643 prev->flags |= CF_RUNNING;
1367 } 1644 }
1368 1645
1369 prev->flags &= ~CF_RUNNING; 1646 prev->flags &= ~CF_RUNNING;
1370 next->flags |= CF_RUNNING; 1647 next->flags |= CF_RUNNING;
1371 1648
1372 /* first get rid of the old state */ 1649 /* first get rid of the old state */
1373 save_perl (aTHX_ prev); 1650 save_perl (aTHX_ prev);
1374 1651
1375 if (expect_false (next->flags & CF_NEW)) 1652 if (ecb_expect_false (next->flags & CF_NEW))
1376 { 1653 {
1377 /* need to start coroutine */ 1654 /* need to start coroutine */
1378 next->flags &= ~CF_NEW; 1655 next->flags &= ~CF_NEW;
1379 /* setup coroutine call */ 1656 /* setup coroutine call */
1380 coro_setup (aTHX_ next); 1657 init_perl (aTHX_ next);
1381 } 1658 }
1382 else 1659 else
1383 load_perl (aTHX_ next); 1660 load_perl (aTHX_ next);
1384 1661
1385 prev__cctx = prev->cctx;
1386
1387 /* possibly untie and reuse the cctx */ 1662 /* possibly untie and reuse the cctx */
1388 if (expect_true ( 1663 if (ecb_expect_true (
1389 prev__cctx->idle_sp == STACKLEVEL 1664 cctx_current->idle_sp == STACKLEVEL
1390 && !(prev__cctx->flags & CC_TRACE) 1665 && !(cctx_current->flags & CC_TRACE)
1391 && !force_cctx 1666 && !force_cctx
1392 )) 1667 ))
1393 { 1668 {
1394 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1669 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1395 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1670 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1396 1671
1397 prev->cctx = 0;
1398
1399 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1672 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1400 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1673 /* without this the next cctx_get might destroy the running cctx while still in use */
1401 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1674 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1402 if (!next->cctx) 1675 if (ecb_expect_true (!next->cctx))
1403 next->cctx = cctx_get (aTHX); 1676 next->cctx = cctx_get (aTHX);
1404 1677
1405 cctx_put (prev__cctx); 1678 cctx_put (cctx_current);
1406 } 1679 }
1680 else
1681 prev->cctx = cctx_current;
1407 1682
1408 ++next->usecount; 1683 ++next->usecount;
1409 1684
1410 if (expect_true (!next->cctx)) 1685 cctx_prev = cctx_current;
1411 next->cctx = cctx_get (aTHX); 1686 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1412 1687
1413 if (expect_false (prev__cctx != next->cctx)) 1688 next->cctx = 0;
1689
1690 if (ecb_expect_false (cctx_prev != cctx_current))
1414 { 1691 {
1415 prev__cctx->top_env = PL_top_env; 1692 cctx_prev->top_env = PL_top_env;
1416 PL_top_env = next->cctx->top_env; 1693 PL_top_env = cctx_current->top_env;
1417 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1694 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1418 } 1695 }
1419 1696
1420 transfer_tail (aTHX); 1697 transfer_tail (aTHX);
1421 } 1698 }
1422} 1699}
… …
1424#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1701#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1425#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1702#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1426 1703
1427/** high level stuff ********************************************************/ 1704/** high level stuff ********************************************************/
1428 1705
1706/* this function is actually Coro, not Coro::State, but we call it from here */
1707/* because it is convenient - but it hasn't been declared yet for that reason */
1429static int 1708static void
1709coro_call_on_destroy (pTHX_ struct coro *coro);
1710
1711static void
1430coro_state_destroy (pTHX_ struct coro *coro) 1712coro_state_destroy (pTHX_ struct coro *coro)
1431{ 1713{
1432 if (coro->flags & CF_DESTROYED) 1714 if (coro->flags & CF_ZOMBIE)
1433 return 0; 1715 return;
1434 1716
1435 if (coro->on_destroy)
1436 coro->on_destroy (aTHX_ coro); 1717 slf_destroy (aTHX_ coro);
1437 1718
1438 coro->flags |= CF_DESTROYED; 1719 coro->flags |= CF_ZOMBIE;
1439 1720
1440 if (coro->flags & CF_READY) 1721 if (coro->flags & CF_READY)
1441 { 1722 {
1442 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1723 /* reduce nready, as destroying a ready coro effectively unreadies it */
1443 /* alternative: look through all ready queues and remove the coro */ 1724 /* alternative: look through all ready queues and remove the coro */
1444 --coro_nready; 1725 --coro_nready;
1445 } 1726 }
1446 else 1727 else
1447 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1728 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1448 1729
1449 if (coro->mainstack && coro->mainstack != main_mainstack) 1730 if (coro->next) coro->next->prev = coro->prev;
1450 { 1731 if (coro->prev) coro->prev->next = coro->next;
1451 struct coro temp; 1732 if (coro == coro_first) coro_first = coro->next;
1452 1733
1453 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1734 if (coro->mainstack
1454 1735 && coro->mainstack != main_mainstack
1455 save_perl (aTHX_ &temp); 1736 && coro->slot
1737 && !PL_dirty)
1456 load_perl (aTHX_ coro); 1738 destroy_perl (aTHX_ coro);
1457
1458 coro_destruct (aTHX_ coro);
1459
1460 load_perl (aTHX_ &temp);
1461
1462 coro->slot = 0;
1463 }
1464 1739
1465 cctx_destroy (coro->cctx); 1740 cctx_destroy (coro->cctx);
1466 SvREFCNT_dec (coro->startcv); 1741 SvREFCNT_dec (coro->startcv);
1467 SvREFCNT_dec (coro->args); 1742 SvREFCNT_dec (coro->args);
1743 SvREFCNT_dec (coro->swap_sv);
1468 SvREFCNT_dec (CORO_THROW); 1744 SvREFCNT_dec (CORO_THROW);
1469 1745
1470 if (coro->next) coro->next->prev = coro->prev; 1746 coro_call_on_destroy (aTHX_ coro);
1471 if (coro->prev) coro->prev->next = coro->next;
1472 if (coro == coro_first) coro_first = coro->next;
1473 1747
1474 return 1; 1748 /* more destruction mayhem in coro_state_free */
1475} 1749}
1476 1750
1477static int 1751static int
1478coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1752coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1479{ 1753{
1480 struct coro *coro = (struct coro *)mg->mg_ptr; 1754 struct coro *coro = (struct coro *)mg->mg_ptr;
1481 mg->mg_ptr = 0; 1755 mg->mg_ptr = 0;
1482 1756
1483 coro->hv = 0;
1484
1485 if (--coro->refcnt < 0)
1486 {
1487 coro_state_destroy (aTHX_ coro); 1757 coro_state_destroy (aTHX_ coro);
1758 SvREFCNT_dec (coro->on_destroy);
1759 SvREFCNT_dec (coro->status);
1760
1488 Safefree (coro); 1761 Safefree (coro);
1489 }
1490 1762
1491 return 0; 1763 return 0;
1492} 1764}
1493 1765
1494static int 1766static int ecb_cold
1495coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1767coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1496{ 1768{
1497 struct coro *coro = (struct coro *)mg->mg_ptr; 1769 /* called when perl clones the current process the slow way (windows process emulation) */
1498 1770 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1499 ++coro->refcnt; 1771 mg->mg_ptr = 0;
1772 mg->mg_virtual = 0;
1500 1773
1501 return 0; 1774 return 0;
1502} 1775}
1503 1776
1504static MGVTBL coro_state_vtbl = { 1777static MGVTBL coro_state_vtbl = {
… …
1527 1800
1528 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1801 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1529 TRANSFER (ta, 1); 1802 TRANSFER (ta, 1);
1530} 1803}
1531 1804
1532/*****************************************************************************/
1533/* gensub: simple closure generation utility */
1534
1535#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1536
1537/* create a closure from XS, returns a code reference */
1538/* the arg can be accessed via GENSUB_ARG from the callback */
1539/* the callback must use dXSARGS/XSRETURN */
1540static SV *
1541gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1542{
1543 CV *cv = (CV *)newSV (0);
1544
1545 sv_upgrade ((SV *)cv, SVt_PVCV);
1546
1547 CvANON_on (cv);
1548 CvISXSUB_on (cv);
1549 CvXSUB (cv) = xsub;
1550 GENSUB_ARG = arg;
1551
1552 return newRV_noinc ((SV *)cv);
1553}
1554
1555/** Coro ********************************************************************/ 1805/** Coro ********************************************************************/
1556 1806
1557INLINE void 1807ecb_inline void
1558coro_enq (pTHX_ struct coro *coro) 1808coro_enq (pTHX_ struct coro *coro)
1559{ 1809{
1560 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1810 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1561}
1562 1811
1563INLINE SV * 1812 SvREFCNT_inc_NN (coro->hv);
1813
1814 coro->next_ready = 0;
1815 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1816 ready [1] = coro;
1817}
1818
1819ecb_inline struct coro *
1564coro_deq (pTHX) 1820coro_deq (pTHX)
1565{ 1821{
1566 int prio; 1822 int prio;
1567 1823
1568 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1824 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1569 if (AvFILLp (coro_ready [prio]) >= 0) 1825 {
1570 return av_shift (coro_ready [prio]); 1826 struct coro **ready = coro_ready [prio];
1827
1828 if (ready [0])
1829 {
1830 struct coro *coro = ready [0];
1831 ready [0] = coro->next_ready;
1832 return coro;
1833 }
1834 }
1571 1835
1572 return 0; 1836 return 0;
1837}
1838
1839static void
1840invoke_sv_ready_hook_helper (void)
1841{
1842 dTHX;
1843 dSP;
1844
1845 ENTER;
1846 SAVETMPS;
1847
1848 PUSHMARK (SP);
1849 PUTBACK;
1850 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1851
1852 FREETMPS;
1853 LEAVE;
1573} 1854}
1574 1855
1575static int 1856static int
1576api_ready (pTHX_ SV *coro_sv) 1857api_ready (pTHX_ SV *coro_sv)
1577{ 1858{
1578 struct coro *coro;
1579 SV *sv_hook;
1580 void (*xs_hook)(void);
1581
1582 if (SvROK (coro_sv))
1583 coro_sv = SvRV (coro_sv);
1584
1585 coro = SvSTATE (coro_sv); 1859 struct coro *coro = SvSTATE (coro_sv);
1586 1860
1587 if (coro->flags & CF_READY) 1861 if (coro->flags & CF_READY)
1588 return 0; 1862 return 0;
1589 1863
1590 coro->flags |= CF_READY; 1864 coro->flags |= CF_READY;
1591 1865
1592 sv_hook = coro_nready ? 0 : coro_readyhook;
1593 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1594
1595 coro_enq (aTHX_ coro); 1866 coro_enq (aTHX_ coro);
1596 ++coro_nready;
1597 1867
1598 if (sv_hook) 1868 if (!coro_nready++)
1599 { 1869 if (coroapi.readyhook)
1600 dSP; 1870 coroapi.readyhook ();
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (sv_hook, G_VOID | G_DISCARD);
1608
1609 FREETMPS;
1610 LEAVE;
1611 }
1612
1613 if (xs_hook)
1614 xs_hook ();
1615 1871
1616 return 1; 1872 return 1;
1617} 1873}
1618 1874
1619static int 1875static int
… …
1621{ 1877{
1622 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1878 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1623} 1879}
1624 1880
1625/* expects to own a reference to next->hv */ 1881/* expects to own a reference to next->hv */
1626INLINE void 1882ecb_inline void
1627prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1883prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1628{ 1884{
1629 SV *prev_sv = SvRV (coro_current); 1885 SV *prev_sv = SvRV (coro_current);
1630 1886
1631 ta->prev = SvSTATE_hv (prev_sv); 1887 ta->prev = SvSTATE_hv (prev_sv);
… …
1642static void 1898static void
1643prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1899prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1644{ 1900{
1645 for (;;) 1901 for (;;)
1646 { 1902 {
1647 SV *next_sv = coro_deq (aTHX); 1903 struct coro *next = coro_deq (aTHX);
1648 1904
1649 if (expect_true (next_sv)) 1905 if (ecb_expect_true (next))
1650 { 1906 {
1651 struct coro *next = SvSTATE_hv (next_sv);
1652
1653 /* cannot transfer to destroyed coros, skip and look for next */ 1907 /* cannot transfer to destroyed coros, skip and look for next */
1654 if (expect_false (next->flags & CF_DESTROYED)) 1908 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1655 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1909 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1656 else 1910 else
1657 { 1911 {
1658 next->flags &= ~CF_READY; 1912 next->flags &= ~CF_READY;
1659 --coro_nready; 1913 --coro_nready;
1660 1914
… …
1663 } 1917 }
1664 } 1918 }
1665 else 1919 else
1666 { 1920 {
1667 /* nothing to schedule: call the idle handler */ 1921 /* nothing to schedule: call the idle handler */
1922 if (SvROK (sv_idle)
1923 && SvOBJECT (SvRV (sv_idle)))
1924 {
1925 if (SvRV (sv_idle) == SvRV (coro_current))
1926 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1927
1928 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1929 api_ready (aTHX_ SvRV (sv_idle));
1930 --coro_nready;
1931 }
1932 else
1933 {
1934 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1668 dSP; 1935 dSP;
1669 1936
1670 ENTER; 1937 ENTER;
1671 SAVETMPS; 1938 SAVETMPS;
1672 1939
1673 PUSHMARK (SP); 1940 PUSHMARK (SP);
1674 PUTBACK; 1941 PUTBACK;
1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); 1942 call_sv (sv_idle, G_VOID | G_DISCARD);
1676 1943
1677 FREETMPS; 1944 FREETMPS;
1678 LEAVE; 1945 LEAVE;
1946 }
1679 } 1947 }
1680 } 1948 }
1681} 1949}
1682 1950
1683INLINE void 1951ecb_inline void
1684prepare_cede (pTHX_ struct coro_transfer_args *ta) 1952prepare_cede (pTHX_ struct coro_transfer_args *ta)
1685{ 1953{
1686 api_ready (aTHX_ coro_current); 1954 api_ready (aTHX_ coro_current);
1687 prepare_schedule (aTHX_ ta); 1955 prepare_schedule (aTHX_ ta);
1688} 1956}
1689 1957
1690INLINE void 1958ecb_inline void
1691prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1959prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1692{ 1960{
1693 SV *prev = SvRV (coro_current); 1961 SV *prev = SvRV (coro_current);
1694 1962
1695 if (coro_nready) 1963 if (coro_nready)
… …
1725{ 1993{
1726 struct coro_transfer_args ta; 1994 struct coro_transfer_args ta;
1727 1995
1728 prepare_cede (aTHX_ &ta); 1996 prepare_cede (aTHX_ &ta);
1729 1997
1730 if (expect_true (ta.prev != ta.next)) 1998 if (ecb_expect_true (ta.prev != ta.next))
1731 { 1999 {
1732 TRANSFER (ta, 1); 2000 TRANSFER (ta, 1);
1733 return 1; 2001 return 1;
1734 } 2002 }
1735 else 2003 else
… …
1754static void 2022static void
1755api_trace (pTHX_ SV *coro_sv, int flags) 2023api_trace (pTHX_ SV *coro_sv, int flags)
1756{ 2024{
1757 struct coro *coro = SvSTATE (coro_sv); 2025 struct coro *coro = SvSTATE (coro_sv);
1758 2026
2027 if (coro->flags & CF_RUNNING)
2028 croak ("cannot enable tracing on a running coroutine, caught");
2029
1759 if (flags & CC_TRACE) 2030 if (flags & CC_TRACE)
1760 { 2031 {
1761 if (!coro->cctx) 2032 if (!coro->cctx)
1762 coro->cctx = cctx_new_run (); 2033 coro->cctx = cctx_new_run ();
1763 else if (!(coro->cctx->flags & CC_TRACE)) 2034 else if (!(coro->cctx->flags & CC_TRACE))
1764 croak ("cannot enable tracing on coroutine with custom stack,"); 2035 croak ("cannot enable tracing on coroutine with custom stack, caught");
1765 2036
1766 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2037 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1767 } 2038 }
1768 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2039 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1769 { 2040 {
… …
1775 coro->slot->runops = RUNOPS_DEFAULT; 2046 coro->slot->runops = RUNOPS_DEFAULT;
1776 } 2047 }
1777} 2048}
1778 2049
1779static void 2050static void
2051coro_push_av (pTHX_ AV *av, I32 gimme_v)
2052{
2053 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2054 {
2055 dSP;
2056
2057 if (gimme_v == G_SCALAR)
2058 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2059 else
2060 {
2061 int i;
2062 EXTEND (SP, AvFILLp (av) + 1);
2063
2064 for (i = 0; i <= AvFILLp (av); ++i)
2065 PUSHs (AvARRAY (av)[i]);
2066 }
2067
2068 PUTBACK;
2069 }
2070}
2071
2072static void
2073coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2074{
2075 if (!coro->on_destroy)
2076 coro->on_destroy = newAV ();
2077
2078 av_push (coro->on_destroy, cb);
2079}
2080
2081static void
2082slf_destroy_join (pTHX_ struct CoroSLF *frame)
2083{
2084 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2085}
2086
2087static int
2088slf_check_join (pTHX_ struct CoroSLF *frame)
2089{
2090 struct coro *coro = (struct coro *)frame->data;
2091
2092 if (!coro->status)
2093 return 1;
2094
2095 frame->destroy = 0;
2096
2097 coro_push_av (aTHX_ coro->status, GIMME_V);
2098
2099 SvREFCNT_dec ((SV *)coro->hv);
2100
2101 return 0;
2102}
2103
2104static void
2105slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2108
2109 if (items > 1)
2110 croak ("join called with too many arguments");
2111
2112 if (coro->status)
2113 frame->prepare = prepare_nop;
2114 else
2115 {
2116 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2117 frame->prepare = prepare_schedule;
2118 }
2119
2120 frame->check = slf_check_join;
2121 frame->destroy = slf_destroy_join;
2122 frame->data = (void *)coro;
2123 SvREFCNT_inc (coro->hv);
2124}
2125
2126static void
1780coro_call_on_destroy (pTHX_ struct coro *coro) 2127coro_call_on_destroy (pTHX_ struct coro *coro)
1781{ 2128{
1782 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2129 AV *od = coro->on_destroy;
1783 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1784 2130
1785 if (on_destroyp) 2131 if (!od)
1786 { 2132 return;
1787 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1788 2133
1789 while (AvFILLp (on_destroy) >= 0) 2134 while (AvFILLp (od) >= 0)
2135 {
2136 SV *cb = sv_2mortal (av_pop (od));
2137
2138 /* coro hv's (and only hv's at the moment) are supported as well */
2139 if (SvSTATEhv_p (aTHX_ cb))
2140 api_ready (aTHX_ cb);
2141 else
1790 { 2142 {
1791 dSP; /* don't disturb outer sp */ 2143 dSP; /* don't disturb outer sp */
1792 SV *cb = av_pop (on_destroy);
1793
1794 PUSHMARK (SP); 2144 PUSHMARK (SP);
1795 2145
1796 if (statusp) 2146 if (coro->status)
1797 { 2147 {
1798 int i; 2148 PUTBACK;
1799 AV *status = (AV *)SvRV (*statusp); 2149 coro_push_av (aTHX_ coro->status, G_ARRAY);
1800 EXTEND (SP, AvFILLp (status) + 1); 2150 SPAGAIN;
1801
1802 for (i = 0; i <= AvFILLp (status); ++i)
1803 PUSHs (AvARRAY (status)[i]);
1804 } 2151 }
1805 2152
1806 PUTBACK; 2153 PUTBACK;
1807 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2154 call_sv (cb, G_VOID | G_DISCARD);
1808 } 2155 }
1809 } 2156 }
1810} 2157}
1811 2158
1812static void 2159static void
1813slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2160coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1814{ 2161{
2162 AV *av;
2163
2164 if (coro->status)
2165 {
2166 av = coro->status;
2167 av_clear (av);
2168 }
2169 else
2170 av = coro->status = newAV ();
2171
2172 /* items are actually not so common, so optimise for this case */
2173 if (items)
2174 {
1815 int i; 2175 int i;
1816 HV *hv = (HV *)SvRV (coro_current);
1817 AV *av = newAV ();
1818 2176
1819 av_extend (av, items - 1); 2177 av_extend (av, items - 1);
2178
1820 for (i = 0; i < items; ++i) 2179 for (i = 0; i < items; ++i)
1821 av_push (av, SvREFCNT_inc_NN (arg [i])); 2180 av_push (av, SvREFCNT_inc_NN (arg [i]));
2181 }
2182}
1822 2183
1823 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2184static void
1824 2185slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2186{
1825 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2187 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1826 api_ready (aTHX_ sv_manager); 2188 api_ready (aTHX_ sv_manager);
1827 2189
1828 frame->prepare = prepare_schedule; 2190 frame->prepare = prepare_schedule;
1829 frame->check = slf_check_repeat; 2191 frame->check = slf_check_repeat;
2192
2193 /* as a minor optimisation, we could unwind all stacks here */
2194 /* but that puts extra pressure on pp_slf, and is not worth much */
2195 /*coro_unwind_stacks (aTHX);*/
2196}
2197
2198static void
2199slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2200{
2201 HV *coro_hv = (HV *)SvRV (coro_current);
2202
2203 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2204 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2205}
2206
2207static void
2208slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 HV *coro_hv;
2211 struct coro *coro;
2212
2213 if (items <= 0)
2214 croak ("Coro::cancel called without coro object,");
2215
2216 coro = SvSTATE (arg [0]);
2217 coro_hv = coro->hv;
2218
2219 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2220
2221 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2222 {
2223 /* coro currently busy cancelling something, so just notify it */
2224 coro->slf_frame.data = (void *)coro;
2225
2226 frame->prepare = prepare_nop;
2227 frame->check = slf_check_nop;
2228 }
2229 else if (coro_hv == (HV *)SvRV (coro_current))
2230 {
2231 /* cancelling the current coro is allowed, and equals terminate */
2232 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2233 }
2234 else
2235 {
2236 struct coro *self = SvSTATE_current;
2237
2238 /* otherwise we cancel directly, purely for speed reasons
2239 * unfortunately, this requires some magic trickery, as
2240 * somebody else could cancel us, so we have to fight the cancellation.
2241 * this is ugly, and hopefully fully worth the extra speed.
2242 * besides, I can't get the slow-but-safe version working...
2243 */
2244 slf_frame.data = 0;
2245 self->flags |= CF_NOCANCEL;
2246 coro_state_destroy (aTHX_ coro);
2247 self->flags &= ~CF_NOCANCEL;
2248
2249 if (slf_frame.data)
2250 {
2251 /* while we were busy we have been cancelled, so terminate */
2252 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2253 }
2254 else
2255 {
2256 frame->prepare = prepare_nop;
2257 frame->check = slf_check_nop;
2258 }
2259 }
2260}
2261
2262static int
2263slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2264{
2265 frame->prepare = 0;
2266 coro_unwind_stacks (aTHX);
2267
2268 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2269
2270 return 1;
2271}
2272
2273static int
2274safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2275{
2276 if (coro->cctx)
2277 croak ("coro inside C callback, unable to cancel at this time, caught");
2278
2279 if (coro->flags & CF_NEW)
2280 {
2281 coro_set_status (aTHX_ coro, arg, items);
2282 coro_state_destroy (aTHX_ coro);
2283 }
2284 else
2285 {
2286 if (!coro->slf_frame.prepare)
2287 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2288
2289 slf_destroy (aTHX_ coro);
2290
2291 coro_set_status (aTHX_ coro, arg, items);
2292 coro->slf_frame.prepare = prepare_nop;
2293 coro->slf_frame.check = slf_check_safe_cancel;
2294
2295 api_ready (aTHX_ (SV *)coro->hv);
2296 }
2297
2298 return 1;
1830} 2299}
1831 2300
1832/*****************************************************************************/ 2301/*****************************************************************************/
1833/* async pool handler */ 2302/* async pool handler */
1834 2303
… …
1865slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2334slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{ 2335{
1867 HV *hv = (HV *)SvRV (coro_current); 2336 HV *hv = (HV *)SvRV (coro_current);
1868 struct coro *coro = SvSTATE_hv ((SV *)hv); 2337 struct coro *coro = SvSTATE_hv ((SV *)hv);
1869 2338
1870 if (expect_true (coro->saved_deffh)) 2339 if (ecb_expect_true (coro->saved_deffh))
1871 { 2340 {
1872 /* subsequent iteration */ 2341 /* subsequent iteration */
1873 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2342 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1874 coro->saved_deffh = 0; 2343 coro->saved_deffh = 0;
1875 2344
1876 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2345 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1877 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2346 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1878 { 2347 {
1879 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2348 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1880 coro->invoke_av = newAV (); 2349 return;
1881
1882 frame->prepare = prepare_nop;
1883 } 2350 }
1884 else 2351 else
1885 { 2352 {
1886 av_clear (GvAV (PL_defgv)); 2353 av_clear (GvAV (PL_defgv));
1887 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2354 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
1912 2379
1913static void 2380static void
1914coro_rouse_callback (pTHX_ CV *cv) 2381coro_rouse_callback (pTHX_ CV *cv)
1915{ 2382{
1916 dXSARGS; 2383 dXSARGS;
1917 SV *data = (SV *)GENSUB_ARG; 2384 SV *data = (SV *)S_GENSUB_ARG;
1918 2385
1919 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2386 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1920 { 2387 {
1921 /* first call, set args */ 2388 /* first call, set args */
2389 SV *coro = SvRV (data);
1922 AV *av = newAV (); 2390 AV *av = newAV ();
1923 SV *coro = SvRV (data);
1924 2391
1925 SvRV_set (data, (SV *)av); 2392 SvRV_set (data, (SV *)av);
1926 api_ready (aTHX_ coro);
1927 SvREFCNT_dec (coro);
1928 2393
1929 /* better take a full copy of the arguments */ 2394 /* better take a full copy of the arguments */
1930 while (items--) 2395 while (items--)
1931 av_store (av, items, newSVsv (ST (items))); 2396 av_store (av, items, newSVsv (ST (items)));
2397
2398 api_ready (aTHX_ coro);
2399 SvREFCNT_dec (coro);
1932 } 2400 }
1933 2401
1934 XSRETURN_EMPTY; 2402 XSRETURN_EMPTY;
1935} 2403}
1936 2404
… …
1953 2421
1954 EXTEND (SP, AvFILLp (av) + 1); 2422 EXTEND (SP, AvFILLp (av) + 1);
1955 for (i = 0; i <= AvFILLp (av); ++i) 2423 for (i = 0; i <= AvFILLp (av); ++i)
1956 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2424 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1957 2425
1958 /* we have stolen the elements, so ste length to zero and free */ 2426 /* we have stolen the elements, so set length to zero and free */
1959 AvFILLp (av) = -1; 2427 AvFILLp (av) = -1;
1960 av_undef (av); 2428 av_undef (av);
1961 2429
1962 PUTBACK; 2430 PUTBACK;
1963 } 2431 }
… …
1987 || SvTYPE (SvRV (cb)) != SVt_PVCV 2455 || SvTYPE (SvRV (cb)) != SVt_PVCV
1988 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2456 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1989 croak ("Coro::rouse_wait called with illegal callback argument,"); 2457 croak ("Coro::rouse_wait called with illegal callback argument,");
1990 2458
1991 { 2459 {
1992 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2460 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1993 SV *data = (SV *)GENSUB_ARG; 2461 SV *data = (SV *)S_GENSUB_ARG;
1994 2462
1995 frame->data = (void *)data; 2463 frame->data = (void *)data;
1996 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2464 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1997 frame->check = slf_check_rouse_wait; 2465 frame->check = slf_check_rouse_wait;
1998 } 2466 }
… …
2002coro_new_rouse_cb (pTHX) 2470coro_new_rouse_cb (pTHX)
2003{ 2471{
2004 HV *hv = (HV *)SvRV (coro_current); 2472 HV *hv = (HV *)SvRV (coro_current);
2005 struct coro *coro = SvSTATE_hv (hv); 2473 struct coro *coro = SvSTATE_hv (hv);
2006 SV *data = newRV_inc ((SV *)hv); 2474 SV *data = newRV_inc ((SV *)hv);
2007 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2475 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2008 2476
2009 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2477 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2010 SvREFCNT_dec (data); /* magicext increases the refcount */ 2478 SvREFCNT_dec (data); /* magicext increases the refcount */
2011 2479
2012 SvREFCNT_dec (coro->rouse_cb); 2480 SvREFCNT_dec (coro->rouse_cb);
… …
2109static void 2577static void
2110slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2578slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2111{ 2579{
2112 frame->prepare = prepare_cede_notself; 2580 frame->prepare = prepare_cede_notself;
2113 frame->check = slf_check_nop; 2581 frame->check = slf_check_nop;
2582}
2583
2584/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2585static void
2586slf_destroy (pTHX_ struct coro *coro)
2587{
2588 /* this callback is reserved for slf functions needing to do cleanup */
2589 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2590 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2591
2592 /*
2593 * The on_destroy above most likely is from an SLF call.
2594 * Since by definition the SLF call will not finish when we destroy
2595 * the coro, we will have to force-finish it here, otherwise
2596 * cleanup functions cannot call SLF functions.
2597 */
2598 coro->slf_frame.prepare = 0;
2114} 2599}
2115 2600
2116/* 2601/*
2117 * these not obviously related functions are all rolled into one 2602 * these not obviously related functions are all rolled into one
2118 * function to increase chances that they all will call transfer with the same 2603 * function to increase chances that they all will call transfer with the same
… …
2125 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2610 I32 checkmark; /* mark SP to see how many elements check has pushed */
2126 2611
2127 /* set up the slf frame, unless it has already been set-up */ 2612 /* set up the slf frame, unless it has already been set-up */
2128 /* the latter happens when a new coro has been started */ 2613 /* the latter happens when a new coro has been started */
2129 /* or when a new cctx was attached to an existing coroutine */ 2614 /* or when a new cctx was attached to an existing coroutine */
2130 if (expect_true (!slf_frame.prepare)) 2615 if (ecb_expect_true (!slf_frame.prepare))
2131 { 2616 {
2132 /* first iteration */ 2617 /* first iteration */
2133 dSP; 2618 dSP;
2134 SV **arg = PL_stack_base + TOPMARK + 1; 2619 SV **arg = PL_stack_base + TOPMARK + 1;
2135 int items = SP - arg; /* args without function object */ 2620 int items = SP - arg; /* args without function object */
… …
2176 while (slf_frame.check (aTHX_ &slf_frame)); 2661 while (slf_frame.check (aTHX_ &slf_frame));
2177 2662
2178 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2663 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2179 2664
2180 /* exception handling */ 2665 /* exception handling */
2181 if (expect_false (CORO_THROW)) 2666 if (ecb_expect_false (CORO_THROW))
2182 { 2667 {
2183 SV *exception = sv_2mortal (CORO_THROW); 2668 SV *exception = sv_2mortal (CORO_THROW);
2184 2669
2185 CORO_THROW = 0; 2670 CORO_THROW = 0;
2186 sv_setsv (ERRSV, exception); 2671 sv_setsv (ERRSV, exception);
2187 croak (0); 2672 croak (0);
2188 } 2673 }
2189 2674
2190 /* return value handling - mostly like entersub */ 2675 /* return value handling - mostly like entersub */
2191 /* make sure we put something on the stack in scalar context */ 2676 /* make sure we put something on the stack in scalar context */
2192 if (GIMME_V == G_SCALAR) 2677 if (GIMME_V == G_SCALAR
2678 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2193 { 2679 {
2194 dSP; 2680 dSP;
2195 SV **bot = PL_stack_base + checkmark; 2681 SV **bot = PL_stack_base + checkmark;
2196 2682
2197 if (sp == bot) /* too few, push undef */ 2683 if (sp == bot) /* too few, push undef */
2198 bot [1] = &PL_sv_undef; 2684 bot [1] = &PL_sv_undef;
2199 else if (sp != bot + 1) /* too many, take last one */ 2685 else /* too many, take last one */
2200 bot [1] = *sp; 2686 bot [1] = *sp;
2201 2687
2202 SP = bot + 1; 2688 SP = bot + 1;
2203 2689
2204 PUTBACK; 2690 PUTBACK;
… …
2237 if (PL_op->op_flags & OPf_STACKED) 2723 if (PL_op->op_flags & OPf_STACKED)
2238 { 2724 {
2239 if (items > slf_arga) 2725 if (items > slf_arga)
2240 { 2726 {
2241 slf_arga = items; 2727 slf_arga = items;
2242 free (slf_argv); 2728 Safefree (slf_argv);
2243 slf_argv = malloc (slf_arga * sizeof (SV *)); 2729 New (0, slf_argv, slf_arga, SV *);
2244 } 2730 }
2245 2731
2246 slf_argc = items; 2732 slf_argc = items;
2247 2733
2248 for (i = 0; i < items; ++i) 2734 for (i = 0; i < items; ++i)
… …
2253 2739
2254 PL_op->op_ppaddr = pp_slf; 2740 PL_op->op_ppaddr = pp_slf;
2255 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2741 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2256 2742
2257 PL_op = (OP *)&slf_restore; 2743 PL_op = (OP *)&slf_restore;
2744}
2745
2746/*****************************************************************************/
2747/* dynamic wind */
2748
2749static void
2750on_enterleave_call (pTHX_ SV *cb)
2751{
2752 dSP;
2753
2754 PUSHSTACK;
2755
2756 PUSHMARK (SP);
2757 PUTBACK;
2758 call_sv (cb, G_VOID | G_DISCARD);
2759 SPAGAIN;
2760
2761 POPSTACK;
2762}
2763
2764static SV *
2765coro_avp_pop_and_free (pTHX_ AV **avp)
2766{
2767 AV *av = *avp;
2768 SV *res = av_pop (av);
2769
2770 if (AvFILLp (av) < 0)
2771 {
2772 *avp = 0;
2773 SvREFCNT_dec (av);
2774 }
2775
2776 return res;
2777}
2778
2779static void
2780coro_pop_on_enter (pTHX_ void *coro)
2781{
2782 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2783 SvREFCNT_dec (cb);
2784}
2785
2786static void
2787coro_pop_on_leave (pTHX_ void *coro)
2788{
2789 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2790 on_enterleave_call (aTHX_ sv_2mortal (cb));
2258} 2791}
2259 2792
2260/*****************************************************************************/ 2793/*****************************************************************************/
2261/* PerlIO::cede */ 2794/* PerlIO::cede */
2262 2795
… …
2264{ 2797{
2265 PerlIOBuf base; 2798 PerlIOBuf base;
2266 NV next, every; 2799 NV next, every;
2267} PerlIOCede; 2800} PerlIOCede;
2268 2801
2269static IV 2802static IV ecb_cold
2270PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2803PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2271{ 2804{
2272 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2805 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2273 2806
2274 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2807 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2275 self->next = nvtime () + self->every; 2808 self->next = nvtime () + self->every;
2276 2809
2277 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2810 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2278} 2811}
2279 2812
2280static SV * 2813static SV * ecb_cold
2281PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2814PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2282{ 2815{
2283 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2816 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2284 2817
2285 return newSVnv (self->every); 2818 return newSVnv (self->every);
… …
2336/* Coro::Semaphore & Coro::Signal */ 2869/* Coro::Semaphore & Coro::Signal */
2337 2870
2338static SV * 2871static SV *
2339coro_waitarray_new (pTHX_ int count) 2872coro_waitarray_new (pTHX_ int count)
2340{ 2873{
2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2874 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV (); 2875 AV *av = newAV ();
2343 SV **ary; 2876 SV **ary;
2344 2877
2345 /* unfortunately, building manually saves memory */ 2878 /* unfortunately, building manually saves memory */
2346 Newx (ary, 2, SV *); 2879 Newx (ary, 2, SV *);
2347 AvALLOC (av) = ary; 2880 AvALLOC (av) = ary;
2881#if PERL_VERSION_ATLEAST (5,10,0)
2348 /*AvARRAY (av) = ary;*/ 2882 AvARRAY (av) = ary;
2883#else
2349 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2884 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2885 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2886 SvPVX ((SV *)av) = (char *)ary;
2887#endif
2350 AvMAX (av) = 1; 2888 AvMAX (av) = 1;
2351 AvFILLp (av) = 0; 2889 AvFILLp (av) = 0;
2352 ary [0] = newSViv (count); 2890 ary [0] = newSViv (count);
2353 2891
2354 return newRV_noinc ((SV *)av); 2892 return newRV_noinc ((SV *)av);
… …
2392 SvREFCNT_dec (cb); 2930 SvREFCNT_dec (cb);
2393 } 2931 }
2394} 2932}
2395 2933
2396static void 2934static void
2397coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2935coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2398{ 2936{
2399 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2937 /* call $sem->adjust (0) to possibly wake up some other waiters */
2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2938 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2401} 2939}
2402 2940
2403static int 2941static int
2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2942slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2405{ 2943{
2406 AV *av = (AV *)frame->data; 2944 AV *av = (AV *)frame->data;
2407 SV *count_sv = AvARRAY (av)[0]; 2945 SV *count_sv = AvARRAY (av)[0];
2946 SV *coro_hv = SvRV (coro_current);
2408 2947
2409 /* if we are about to throw, don't actually acquire the lock, just throw */ 2948 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW) 2949 if (CORO_THROW)
2411 return 0; 2950 return 0;
2412 else if (SvIVX (count_sv) > 0) 2951 else if (SvIVX (count_sv) > 0)
2413 { 2952 {
2414 SvSTATE_current->on_destroy = 0; 2953 frame->destroy = 0;
2415 2954
2416 if (acquire) 2955 if (acquire)
2417 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2956 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else 2957 else
2419 coro_semaphore_adjust (aTHX_ av, 0); 2958 coro_semaphore_adjust (aTHX_ av, 0);
… …
2424 { 2963 {
2425 int i; 2964 int i;
2426 /* if we were woken up but can't down, we look through the whole */ 2965 /* if we were woken up but can't down, we look through the whole */
2427 /* waiters list and only add us if we aren't in there already */ 2966 /* waiters list and only add us if we aren't in there already */
2428 /* this avoids some degenerate memory usage cases */ 2967 /* this avoids some degenerate memory usage cases */
2429 2968 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2430 for (i = 1; i <= AvFILLp (av); ++i)
2431 if (AvARRAY (av)[i] == SvRV (coro_current)) 2969 if (AvARRAY (av)[i] == coro_hv)
2432 return 1; 2970 return 1;
2433 2971
2434 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2972 av_push (av, SvREFCNT_inc (coro_hv));
2435 return 1; 2973 return 1;
2436 } 2974 }
2437} 2975}
2438 2976
2439static int 2977static int
… …
2462 { 3000 {
2463 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3001 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2464 3002
2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3003 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2466 frame->prepare = prepare_schedule; 3004 frame->prepare = prepare_schedule;
2467
2468 /* to avoid race conditions when a woken-up coro gets terminated */ 3005 /* to avoid race conditions when a woken-up coro gets terminated */
2469 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3006 /* we arrange for a temporary on_destroy that calls adjust (0) */
2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3007 frame->destroy = coro_semaphore_destroy;
2471 } 3008 }
2472} 3009}
2473 3010
2474static void 3011static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3012slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2483{ 3020{
2484 if (items >= 2) 3021 if (items >= 2)
2485 { 3022 {
2486 /* callback form */ 3023 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]); 3024 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3025 SV *cb_cv = s_get_cv_croak (arg [1]);
2489 3026
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3027 av_push (av, SvREFCNT_inc_NN (cb_cv));
2491 3028
2492 if (SvIVX (AvARRAY (av)[0]) > 0) 3029 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0); 3030 coro_semaphore_adjust (aTHX_ av, 0);
2494 3031
2495 frame->prepare = prepare_nop; 3032 frame->prepare = prepare_nop;
… …
2519 AvARRAY (av)[0] = AvARRAY (av)[1]; 3056 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb; 3057 AvARRAY (av)[1] = cb;
2521 3058
2522 cb = av_shift (av); 3059 cb = av_shift (av);
2523 3060
3061 if (SvTYPE (cb) == SVt_PVCV)
3062 {
3063 dSP;
3064 PUSHMARK (SP);
3065 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3066 PUTBACK;
3067 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3068 }
3069 else
3070 {
2524 api_ready (aTHX_ cb); 3071 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */ 3072 sv_setiv (cb, 0); /* signal waiter */
3073 }
3074
2526 SvREFCNT_dec (cb); 3075 SvREFCNT_dec (cb);
2527 3076
2528 --count; 3077 --count;
2529 } 3078 }
2530} 3079}
… …
2539static void 3088static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3089slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{ 3090{
2542 AV *av = (AV *)SvRV (arg [0]); 3091 AV *av = (AV *)SvRV (arg [0]);
2543 3092
3093 if (items >= 2)
3094 {
3095 SV *cb_cv = s_get_cv_croak (arg [1]);
3096 av_push (av, SvREFCNT_inc_NN (cb_cv));
3097
2544 if (SvIVX (AvARRAY (av)[0])) 3098 if (SvIVX (AvARRAY (av)[0]))
3099 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3100
3101 frame->prepare = prepare_nop;
3102 frame->check = slf_check_nop;
3103 }
3104 else if (SvIVX (AvARRAY (av)[0]))
2545 { 3105 {
2546 SvIVX (AvARRAY (av)[0]) = 0; 3106 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop; 3107 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop; 3108 frame->check = slf_check_nop;
2549 } 3109 }
2550 else 3110 else
2551 { 3111 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3112 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2553 3113
2554 av_push (av, waiter); 3114 av_push (av, waiter);
2555 3115
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3116 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule; 3117 frame->prepare = prepare_schedule;
… …
2575 3135
2576static void 3136static void
2577coro_aio_callback (pTHX_ CV *cv) 3137coro_aio_callback (pTHX_ CV *cv)
2578{ 3138{
2579 dXSARGS; 3139 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG; 3140 AV *state = (AV *)S_GENSUB_ARG;
2581 SV *coro = av_pop (state); 3141 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state)); 3142 SV *data_sv = newSV (sizeof (struct io_state));
2583 3143
2584 av_extend (state, items - 1); 3144 av_extend (state, items - 1);
2585 3145
… …
2670 dSP; 3230 dSP;
2671 3231
2672 static SV *prio_cv; 3232 static SV *prio_cv;
2673 static SV *prio_sv; 3233 static SV *prio_sv;
2674 3234
2675 if (expect_false (!prio_cv)) 3235 if (ecb_expect_false (!prio_cv))
2676 { 3236 {
2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3237 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2678 prio_sv = newSViv (0); 3238 prio_sv = newSViv (0);
2679 } 3239 }
2680 3240
… …
2699 3259
2700 for (i = 0; i < items; ++i) 3260 for (i = 0; i < items; ++i)
2701 PUSHs (arg [i]); 3261 PUSHs (arg [i]);
2702 3262
2703 /* now push the callback closure */ 3263 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3264 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2705 3265
2706 /* now call the AIO function - we assume our request is uncancelable */ 3266 /* now call the AIO function - we assume our request is uncancelable */
2707 PUTBACK; 3267 PUTBACK;
2708 call_sv ((SV *)req, G_VOID | G_DISCARD); 3268 call_sv ((SV *)req, G_VOID | G_DISCARD);
2709 } 3269 }
2710 3270
2711 /* now that the requets is going, we loop toll we have a result */ 3271 /* now that the request is going, we loop till we have a result */
2712 frame->data = (void *)state; 3272 frame->data = (void *)state;
2713 frame->prepare = prepare_schedule; 3273 frame->prepare = prepare_schedule;
2714 frame->check = slf_check_aio_req; 3274 frame->check = slf_check_aio_req;
2715} 3275}
2716 3276
… …
2723 3283
2724 XSRETURN_EMPTY; 3284 XSRETURN_EMPTY;
2725} 3285}
2726 3286
2727/*****************************************************************************/ 3287/*****************************************************************************/
3288
3289#if CORO_CLONE
3290# include "clone.c"
3291#endif
3292
3293/*****************************************************************************/
3294
3295static SV *
3296coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3297{
3298 SV *coro_sv;
3299 struct coro *coro;
3300 MAGIC *mg;
3301 HV *hv;
3302 SV *cb;
3303 int i;
3304
3305 if (argc > 0)
3306 {
3307 cb = s_get_cv_croak (argv [0]);
3308
3309 if (!is_coro)
3310 {
3311 if (CvISXSUB (cb))
3312 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3313
3314 if (!CvROOT (cb))
3315 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3316 }
3317 }
3318
3319 Newz (0, coro, 1, struct coro);
3320 coro->args = newAV ();
3321 coro->flags = CF_NEW;
3322
3323 if (coro_first) coro_first->prev = coro;
3324 coro->next = coro_first;
3325 coro_first = coro;
3326
3327 coro->hv = hv = newHV ();
3328 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3329 mg->mg_flags |= MGf_DUP;
3330 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3331
3332 if (argc > 0)
3333 {
3334 av_extend (coro->args, argc + is_coro - 1);
3335
3336 if (is_coro)
3337 {
3338 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3339 cb = (SV *)cv_coro_run;
3340 }
3341
3342 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3343
3344 for (i = 1; i < argc; i++)
3345 av_push (coro->args, newSVsv (argv [i]));
3346 }
3347
3348 return coro_sv;
3349}
3350
3351#ifndef __cplusplus
3352ecb_cold XS(boot_Coro__State);
3353#endif
3354
3355#if CORO_JIT
3356
3357static void ecb_noinline ecb_cold
3358pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3359{
3360 dSP;
3361 AV *av = newAV ();
3362
3363 av_store (av, 3, newSVuv (d));
3364 av_store (av, 2, newSVuv (c));
3365 av_store (av, 1, newSVuv (b));
3366 av_store (av, 0, newSVuv (a));
3367
3368 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3369
3370 PUTBACK;
3371}
3372
3373static void ecb_noinline ecb_cold
3374jit_init (pTHX)
3375{
3376 dSP;
3377 SV *load, *save;
3378 char *map_base;
3379 char *load_ptr, *save_ptr;
3380 STRLEN load_len, save_len, map_len;
3381 int count;
3382
3383 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3384
3385 PUSHMARK (SP);
3386#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3387# include "state.h"
3388#undef VARx
3389 count = call_pv ("Coro::State::_jit", G_ARRAY);
3390 SPAGAIN;
3391
3392 save = POPs; save_ptr = SvPVbyte (save, save_len);
3393 load = POPs; load_ptr = SvPVbyte (load, load_len);
3394
3395 map_len = load_len + save_len + 16;
3396
3397 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3398
3399 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3400
3401 load_perl_slots = (load_save_perl_slots_type)map_base;
3402 memcpy (map_base, load_ptr, load_len);
3403
3404 map_base += (load_len + 15) & ~15;
3405
3406 save_perl_slots = (load_save_perl_slots_type)map_base;
3407 memcpy (map_base, save_ptr, save_len);
3408
3409 /* we are good citizens and try to make the page read-only, so the evil evil */
3410 /* hackers might have it a bit more difficult */
3411 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3412
3413 PUTBACK;
3414 eval_pv ("undef &Coro::State::_jit", 1);
3415}
3416
3417#endif
2728 3418
2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3419MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2730 3420
2731PROTOTYPES: DISABLE 3421PROTOTYPES: DISABLE
2732 3422
… …
2736# if CORO_PTHREAD 3426# if CORO_PTHREAD
2737 coro_thx = PERL_GET_CONTEXT; 3427 coro_thx = PERL_GET_CONTEXT;
2738# endif 3428# endif
2739#endif 3429#endif
2740 BOOT_PAGESIZE; 3430 BOOT_PAGESIZE;
3431
3432 /* perl defines these to check for existance first, but why it doesn't */
3433 /* just create them one at init time is not clear to me, except for */
3434 /* programs trying to delete them, but... */
3435 /* anyway, we declare this as invalid and make sure they are initialised here */
3436 DEFSV;
3437 ERRSV;
3438
3439 cctx_current = cctx_new_empty ();
2741 3440
2742 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3441 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2743 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3442 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2744 3443
2745 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3444 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2783 coroapi.prepare_nop = prepare_nop; 3482 coroapi.prepare_nop = prepare_nop;
2784 coroapi.prepare_schedule = prepare_schedule; 3483 coroapi.prepare_schedule = prepare_schedule;
2785 coroapi.prepare_cede = prepare_cede; 3484 coroapi.prepare_cede = prepare_cede;
2786 coroapi.prepare_cede_notself = prepare_cede_notself; 3485 coroapi.prepare_cede_notself = prepare_cede_notself;
2787 3486
2788 { 3487 time_init (aTHX);
2789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2790 3488
2791 if (!svp) croak ("Time::HiRes is required");
2792 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2793
2794 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2795 }
2796
2797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3489 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3490#if CORO_JIT
3491 PUTBACK;
3492 jit_init (aTHX);
3493 SPAGAIN;
3494#endif
2798} 3495}
2799 3496
2800SV * 3497SV *
2801new (char *klass, ...) 3498new (SV *klass, ...)
2802 ALIAS: 3499 ALIAS:
2803 Coro::new = 1 3500 Coro::new = 1
2804 CODE: 3501 CODE:
2805{ 3502 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2806 struct coro *coro; 3503 OUTPUT:
2807 MAGIC *mg;
2808 HV *hv;
2809 CV *cb;
2810 int i;
2811
2812 if (items > 1)
2813 {
2814 cb = coro_sv_2cv (aTHX_ ST (1));
2815
2816 if (!ix)
2817 {
2818 if (CvISXSUB (cb))
2819 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2820
2821 if (!CvROOT (cb))
2822 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2823 }
2824 }
2825
2826 Newz (0, coro, 1, struct coro);
2827 coro->args = newAV ();
2828 coro->flags = CF_NEW;
2829
2830 if (coro_first) coro_first->prev = coro;
2831 coro->next = coro_first;
2832 coro_first = coro;
2833
2834 coro->hv = hv = newHV ();
2835 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2836 mg->mg_flags |= MGf_DUP;
2837 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2838
2839 if (items > 1)
2840 {
2841 av_extend (coro->args, items - 1 + ix - 1);
2842
2843 if (ix)
2844 {
2845 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2846 cb = cv_coro_run;
2847 }
2848
2849 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2850
2851 for (i = 2; i < items; i++)
2852 av_push (coro->args, newSVsv (ST (i)));
2853 }
2854}
2855 OUTPUT:
2856 RETVAL 3504 RETVAL
2857 3505
2858void 3506void
2859transfer (...) 3507transfer (...)
2860 PROTOTYPE: $$ 3508 PROTOTYPE: $$
2861 CODE: 3509 CODE:
2862 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3510 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2863 3511
2864bool
2865_destroy (SV *coro_sv)
2866 CODE:
2867 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2868 OUTPUT:
2869 RETVAL
2870
2871void 3512void
2872_exit (int code) 3513_exit (int code)
2873 PROTOTYPE: $ 3514 PROTOTYPE: $
2874 CODE: 3515 CODE:
2875 _exit (code); 3516 _exit (code);
3517
3518SV *
3519clone (Coro::State coro)
3520 CODE:
3521{
3522#if CORO_CLONE
3523 struct coro *ncoro = coro_clone (aTHX_ coro);
3524 MAGIC *mg;
3525 /* TODO: too much duplication */
3526 ncoro->hv = newHV ();
3527 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3528 mg->mg_flags |= MGf_DUP;
3529 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3530#else
3531 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3532#endif
3533}
3534 OUTPUT:
3535 RETVAL
2876 3536
2877int 3537int
2878cctx_stacksize (int new_stacksize = 0) 3538cctx_stacksize (int new_stacksize = 0)
2879 PROTOTYPE: ;$ 3539 PROTOTYPE: ;$
2880 CODE: 3540 CODE:
… …
2930 eval = 1 3590 eval = 1
2931 CODE: 3591 CODE:
2932{ 3592{
2933 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3593 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2934 { 3594 {
2935 struct coro temp; 3595 struct coro *current = SvSTATE_current;
3596 struct CoroSLF slf_save;
2936 3597
2937 if (!(coro->flags & CF_RUNNING)) 3598 if (current != coro)
2938 { 3599 {
2939 PUTBACK; 3600 PUTBACK;
2940 save_perl (aTHX_ &temp); 3601 save_perl (aTHX_ current);
2941 load_perl (aTHX_ coro); 3602 load_perl (aTHX_ coro);
3603 /* the coro is most likely in an active SLF call.
3604 * while not strictly required (the code we execute is
3605 * not allowed to call any SLF functions), it's cleaner
3606 * to reinitialise the slf_frame and restore it later.
3607 * This might one day allow us to actually do SLF calls
3608 * from code executed here.
3609 */
3610 slf_save = slf_frame;
3611 slf_frame.prepare = 0;
3612 SPAGAIN;
2942 } 3613 }
2943 3614
2944 {
2945 dSP;
2946 ENTER;
2947 SAVETMPS;
2948 PUTBACK;
2949 PUSHSTACK; 3615 PUSHSTACK;
3616
2950 PUSHMARK (SP); 3617 PUSHMARK (SP);
3618 PUTBACK;
2951 3619
2952 if (ix) 3620 if (ix)
2953 eval_sv (coderef, 0); 3621 eval_sv (coderef, 0);
2954 else 3622 else
2955 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3623 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2956 3624
2957 POPSTACK; 3625 POPSTACK;
2958 SPAGAIN; 3626 SPAGAIN;
2959 FREETMPS;
2960 LEAVE;
2961 PUTBACK;
2962 }
2963 3627
2964 if (!(coro->flags & CF_RUNNING)) 3628 if (current != coro)
2965 { 3629 {
3630 PUTBACK;
3631 slf_frame = slf_save;
2966 save_perl (aTHX_ coro); 3632 save_perl (aTHX_ coro);
2967 load_perl (aTHX_ &temp); 3633 load_perl (aTHX_ current);
2968 SPAGAIN; 3634 SPAGAIN;
2969 } 3635 }
2970 } 3636 }
2971} 3637}
2972 3638
… …
2975 PROTOTYPE: $ 3641 PROTOTYPE: $
2976 ALIAS: 3642 ALIAS:
2977 is_ready = CF_READY 3643 is_ready = CF_READY
2978 is_running = CF_RUNNING 3644 is_running = CF_RUNNING
2979 is_new = CF_NEW 3645 is_new = CF_NEW
2980 is_destroyed = CF_DESTROYED 3646 is_destroyed = CF_ZOMBIE
3647 is_zombie = CF_ZOMBIE
3648 is_suspended = CF_SUSPENDED
2981 CODE: 3649 CODE:
2982 RETVAL = boolSV (coro->flags & ix); 3650 RETVAL = boolSV (coro->flags & ix);
2983 OUTPUT: 3651 OUTPUT:
2984 RETVAL 3652 RETVAL
2985 3653
2986void 3654void
2987throw (Coro::State self, SV *throw = &PL_sv_undef) 3655throw (Coro::State self, SV *exception = &PL_sv_undef)
2988 PROTOTYPE: $;$ 3656 PROTOTYPE: $;$
2989 CODE: 3657 CODE:
2990{ 3658{
2991 struct coro *current = SvSTATE_current; 3659 struct coro *current = SvSTATE_current;
2992 SV **throwp = self == current ? &CORO_THROW : &self->except; 3660 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2993 SvREFCNT_dec (*throwp); 3661 SvREFCNT_dec (*exceptionp);
2994 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3662 SvGETMAGIC (exception);
3663 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2995} 3664}
2996 3665
2997void 3666void
2998api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3667api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2999 PROTOTYPE: $;$ 3668 PROTOTYPE: $;$
… …
3001 3670
3002SV * 3671SV *
3003has_cctx (Coro::State coro) 3672has_cctx (Coro::State coro)
3004 PROTOTYPE: $ 3673 PROTOTYPE: $
3005 CODE: 3674 CODE:
3006 RETVAL = boolSV (!!coro->cctx); 3675 /* maybe manage the running flag differently */
3676 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3007 OUTPUT: 3677 OUTPUT:
3008 RETVAL 3678 RETVAL
3009 3679
3010int 3680int
3011is_traced (Coro::State coro) 3681is_traced (Coro::State coro)
… …
3031 3701
3032void 3702void
3033force_cctx () 3703force_cctx ()
3034 PROTOTYPE: 3704 PROTOTYPE:
3035 CODE: 3705 CODE:
3036 SvSTATE_current->cctx->idle_sp = 0; 3706 cctx_current->idle_sp = 0;
3037 3707
3038void 3708void
3039swap_defsv (Coro::State self) 3709swap_defsv (Coro::State self)
3040 PROTOTYPE: $ 3710 PROTOTYPE: $
3041 ALIAS: 3711 ALIAS:
… …
3049 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3719 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3050 3720
3051 SV *tmp = *src; *src = *dst; *dst = tmp; 3721 SV *tmp = *src; *src = *dst; *dst = tmp;
3052 } 3722 }
3053 3723
3724void
3725cancel (Coro::State self)
3726 CODE:
3727 coro_state_destroy (aTHX_ self);
3728
3729SV *
3730enable_times (int enabled = enable_times)
3731 CODE:
3732{
3733 RETVAL = boolSV (enable_times);
3734
3735 if (enabled != enable_times)
3736 {
3737 enable_times = enabled;
3738
3739 coro_times_update ();
3740 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3741 }
3742}
3743 OUTPUT:
3744 RETVAL
3745
3746void
3747times (Coro::State self)
3748 PPCODE:
3749{
3750 struct coro *current = SvSTATE (coro_current);
3751
3752 if (ecb_expect_false (current == self))
3753 {
3754 coro_times_update ();
3755 coro_times_add (SvSTATE (coro_current));
3756 }
3757
3758 EXTEND (SP, 2);
3759 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3760 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3761
3762 if (ecb_expect_false (current == self))
3763 coro_times_sub (SvSTATE (coro_current));
3764}
3765
3766void
3767swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3768 CODE:
3769{
3770 struct coro *current = SvSTATE_current;
3771
3772 if (current == coro)
3773 SWAP_SVS (current);
3774
3775 if (!coro->swap_sv)
3776 coro->swap_sv = newAV ();
3777
3778 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3779 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3780
3781 if (current == coro)
3782 SWAP_SVS (current);
3783}
3784
3054 3785
3055MODULE = Coro::State PACKAGE = Coro 3786MODULE = Coro::State PACKAGE = Coro
3056 3787
3057BOOT: 3788BOOT:
3058{ 3789{
3059 int i;
3060
3061 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3790 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3062 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3791 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3063 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3792 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3064 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3065 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3793 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3066 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3794 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3067 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3795 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3068 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3796 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3797 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3069 3798
3070 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3799 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3071 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3800 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3072 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3801 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3073 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3802 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3074 3803
3075 coro_stash = gv_stashpv ("Coro", TRUE); 3804 coro_stash = gv_stashpv ("Coro", TRUE);
3076 3805
3077 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3806 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3078 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3807 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3079 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3808 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3080 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3809 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3081 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3810 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3082 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3811 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3083
3084 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3085 coro_ready[i] = newAV ();
3086 3812
3087 { 3813 {
3088 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3814 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3089 3815
3090 coroapi.schedule = api_schedule; 3816 coroapi.schedule = api_schedule;
… …
3100 sv_setiv (sv, (IV)&coroapi); 3826 sv_setiv (sv, (IV)&coroapi);
3101 SvREADONLY_on (sv); 3827 SvREADONLY_on (sv);
3102 } 3828 }
3103} 3829}
3104 3830
3831SV *
3832async (...)
3833 PROTOTYPE: &@
3834 CODE:
3835 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3836 api_ready (aTHX_ RETVAL);
3837 OUTPUT:
3838 RETVAL
3839
3840void
3841_destroy (Coro::State coro)
3842 CODE:
3843 /* used by the manager thread */
3844 coro_state_destroy (aTHX_ coro);
3845
3846void
3847on_destroy (Coro::State coro, SV *cb)
3848 CODE:
3849 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3850
3851void
3852join (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_join);
3855
3105void 3856void
3106terminate (...) 3857terminate (...)
3107 CODE: 3858 CODE:
3108 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3859 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3109 3860
3110void 3861void
3862cancel (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3865
3866int
3867safe_cancel (Coro::State self, ...)
3868 C_ARGS: aTHX_ self, &ST (1), items - 1
3869
3870void
3111schedule (...) 3871schedule (...)
3112 CODE: 3872 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3873 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3114 3874
3115void 3875void
… …
3129 3889
3130void 3890void
3131cede_notself (...) 3891cede_notself (...)
3132 CODE: 3892 CODE:
3133 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3893 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3134
3135void
3136_cancel (Coro::State self)
3137 CODE:
3138 coro_state_destroy (aTHX_ self);
3139 coro_call_on_destroy (aTHX_ self);
3140 3894
3141void 3895void
3142_set_current (SV *current) 3896_set_current (SV *current)
3143 PROTOTYPE: $ 3897 PROTOTYPE: $
3144 CODE: 3898 CODE:
… …
3148void 3902void
3149_set_readyhook (SV *hook) 3903_set_readyhook (SV *hook)
3150 PROTOTYPE: $ 3904 PROTOTYPE: $
3151 CODE: 3905 CODE:
3152 SvREFCNT_dec (coro_readyhook); 3906 SvREFCNT_dec (coro_readyhook);
3907 SvGETMAGIC (hook);
3908 if (SvOK (hook))
3909 {
3153 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3910 coro_readyhook = newSVsv (hook);
3911 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3912 }
3913 else
3914 {
3915 coro_readyhook = 0;
3916 CORO_READYHOOK = 0;
3917 }
3154 3918
3155int 3919int
3156prio (Coro::State coro, int newprio = 0) 3920prio (Coro::State coro, int newprio = 0)
3157 PROTOTYPE: $;$ 3921 PROTOTYPE: $;$
3158 ALIAS: 3922 ALIAS:
… …
3164 if (items > 1) 3928 if (items > 1)
3165 { 3929 {
3166 if (ix) 3930 if (ix)
3167 newprio = coro->prio - newprio; 3931 newprio = coro->prio - newprio;
3168 3932
3169 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3933 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3170 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3934 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3171 3935
3172 coro->prio = newprio; 3936 coro->prio = newprio;
3173 } 3937 }
3174} 3938}
3175 OUTPUT: 3939 OUTPUT:
… …
3190 RETVAL = coro_nready; 3954 RETVAL = coro_nready;
3191 OUTPUT: 3955 OUTPUT:
3192 RETVAL 3956 RETVAL
3193 3957
3194void 3958void
3959suspend (Coro::State self)
3960 PROTOTYPE: $
3961 CODE:
3962 self->flags |= CF_SUSPENDED;
3963
3964void
3965resume (Coro::State self)
3966 PROTOTYPE: $
3967 CODE:
3968 self->flags &= ~CF_SUSPENDED;
3969
3970void
3195_pool_handler (...) 3971_pool_handler (...)
3196 CODE: 3972 CODE:
3197 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 3973 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3198 3974
3199void 3975void
… …
3210 for (i = 1; i < items; ++i) 3986 for (i = 1; i < items; ++i)
3211 av_push (av, SvREFCNT_inc_NN (ST (i))); 3987 av_push (av, SvREFCNT_inc_NN (ST (i)));
3212 3988
3213 if ((SV *)hv == &PL_sv_undef) 3989 if ((SV *)hv == &PL_sv_undef)
3214 { 3990 {
3215 PUSHMARK (SP); 3991 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3216 EXTEND (SP, 2);
3217 PUSHs (sv_Coro);
3218 PUSHs ((SV *)cv_pool_handler);
3219 PUTBACK;
3220 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3221 SPAGAIN;
3222
3223 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 3992 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3993 SvREFCNT_dec (sv);
3224 } 3994 }
3225 3995
3226 { 3996 {
3227 struct coro *coro = SvSTATE_hv (hv); 3997 struct coro *coro = SvSTATE_hv (hv);
3228 3998
… …
3252rouse_wait (...) 4022rouse_wait (...)
3253 PROTOTYPE: ;$ 4023 PROTOTYPE: ;$
3254 PPCODE: 4024 PPCODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4025 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3256 4026
4027void
4028on_enter (SV *block)
4029 ALIAS:
4030 on_leave = 1
4031 PROTOTYPE: &
4032 CODE:
4033{
4034 struct coro *coro = SvSTATE_current;
4035 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4036
4037 block = s_get_cv_croak (block);
4038
4039 if (!*avp)
4040 *avp = newAV ();
4041
4042 av_push (*avp, SvREFCNT_inc (block));
4043
4044 if (!ix)
4045 on_enterleave_call (aTHX_ block);
4046
4047 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4048 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4049 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4050}
4051
3257 4052
3258MODULE = Coro::State PACKAGE = PerlIO::cede 4053MODULE = Coro::State PACKAGE = PerlIO::cede
3259 4054
3260BOOT: 4055BOOT:
3261 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4056 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3264MODULE = Coro::State PACKAGE = Coro::Semaphore 4059MODULE = Coro::State PACKAGE = Coro::Semaphore
3265 4060
3266SV * 4061SV *
3267new (SV *klass, SV *count = 0) 4062new (SV *klass, SV *count = 0)
3268 CODE: 4063 CODE:
4064{
4065 int semcnt = 1;
4066
4067 if (count)
4068 {
4069 SvGETMAGIC (count);
4070
4071 if (SvOK (count))
4072 semcnt = SvIV (count);
4073 }
4074
3269 RETVAL = sv_bless ( 4075 RETVAL = sv_bless (
3270 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4076 coro_waitarray_new (aTHX_ semcnt),
3271 GvSTASH (CvGV (cv)) 4077 GvSTASH (CvGV (cv))
3272 ); 4078 );
4079}
3273 OUTPUT: 4080 OUTPUT:
3274 RETVAL 4081 RETVAL
3275 4082
3276# helper for Coro::Channel 4083# helper for Coro::Channel and others
3277SV * 4084SV *
3278_alloc (int count) 4085_alloc (int count)
3279 CODE: 4086 CODE:
3280 RETVAL = coro_waitarray_new (aTHX_ count); 4087 RETVAL = coro_waitarray_new (aTHX_ count);
3281 OUTPUT: 4088 OUTPUT:
… …
3339 for (i = 1; i <= wcount; ++i) 4146 for (i = 1; i <= wcount; ++i)
3340 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4147 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3341 } 4148 }
3342} 4149}
3343 4150
4151MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4152
4153void
4154_may_delete (SV *sem, int count, unsigned int extra_refs)
4155 PPCODE:
4156{
4157 AV *av = (AV *)SvRV (sem);
4158
4159 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4160 && AvFILLp (av) == 0 /* no waiters, just count */
4161 && SvIV (AvARRAY (av)[0]) == count)
4162 XSRETURN_YES;
4163
4164 XSRETURN_NO;
4165}
4166
3344MODULE = Coro::State PACKAGE = Coro::Signal 4167MODULE = Coro::State PACKAGE = Coro::Signal
3345 4168
3346SV * 4169SV *
3347new (SV *klass) 4170new (SV *klass)
3348 CODE: 4171 CODE:
… …
3419 4242
3420void 4243void
3421_register (char *target, char *proto, SV *req) 4244_register (char *target, char *proto, SV *req)
3422 CODE: 4245 CODE:
3423{ 4246{
3424 CV *req_cv = coro_sv_2cv (aTHX_ req); 4247 SV *req_cv = s_get_cv_croak (req);
3425 /* newXSproto doesn't return the CV on 5.8 */ 4248 /* newXSproto doesn't return the CV on 5.8 */
3426 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4249 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3427 sv_setpv ((SV *)slf_cv, proto); 4250 sv_setpv ((SV *)slf_cv, proto);
3428 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4251 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3429} 4252}
3430 4253
4254MODULE = Coro::State PACKAGE = Coro::Select
4255
4256void
4257patch_pp_sselect ()
4258 CODE:
4259 if (!coro_old_pp_sselect)
4260 {
4261 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4262 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4263 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4264 }
4265
4266void
4267unpatch_pp_sselect ()
4268 CODE:
4269 if (coro_old_pp_sselect)
4270 {
4271 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4272 coro_old_pp_sselect = 0;
4273 }
4274

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