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Comparing Coro/Coro/State.xs (file contents):
Revision 1.180 by root, Wed Oct 3 17:12:20 2007 UTC vs.
Revision 1.316 by root, Thu Nov 20 06:01:40 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 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
75/* 5.8.7 */ 107/* 5.8.7 */
76#ifndef SvRV_set 108#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 110#endif
79 111
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 123#endif
92 124
93/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
95#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
97 134
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 136
100#if __GNUC__ >= 3 137#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
103#else 141#else
104# define attribute(x) 142# define attribute(x)
105# define BARRIER 143# define expect(expr,value) (expr)
144# define INLINE static
106#endif 145#endif
146
147#define expect_false(expr) expect ((expr) != 0, 0)
148#define expect_true(expr) expect ((expr) != 0, 1)
107 149
108#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
109 151
110#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
111 154
112#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 156# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 158# endif
159#endif
120 160
121/* helper storage struct for Coro::AIO */ 161static double (*nvtime)(); /* so why doesn't it take void? */
122struct io_state
123{
124 int errorno;
125 I32 laststype;
126 int laststatval;
127 Stat_t statcache;
128};
129 162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
166
167static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 171static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
136 174
137static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook;
178static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */
138 180
139/* async_pool helper stuff */ 181/* async_pool helper stuff */
140static SV *sv_pool_rss; 182static SV *sv_pool_rss;
141static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
142static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
189
190/* Coro::AnyEvent */
191static SV *sv_activity;
143 192
144static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
145static int cctx_count, cctx_idle; 194static int cctx_count, cctx_idle;
146 195
147enum { 196enum {
… …
152 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
153 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
154}; 203};
155 204
156/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
157typedef struct coro_cctx { 206typedef struct coro_cctx
207{
158 struct coro_cctx *next; 208 struct coro_cctx *next;
159 209
160 /* the stack */ 210 /* the stack */
161 void *sptr; 211 void *sptr;
162 size_t ssize; 212 size_t ssize;
… …
165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 215 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 216 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
167 JMPENV *top_env; 217 JMPENV *top_env;
168 coro_context cctx; 218 coro_context cctx;
169 219
220 U32 gen;
170#if CORO_USE_VALGRIND 221#if CORO_USE_VALGRIND
171 int valgrind_id; 222 int valgrind_id;
172#endif 223#endif
173 unsigned char flags; 224 unsigned char flags;
174} coro_cctx; 225} coro_cctx;
… …
178 CF_READY = 0x0002, /* coroutine is ready */ 229 CF_READY = 0x0002, /* coroutine is ready */
179 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
180 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181}; 232};
182 233
183/* this is a structure representing a perl-level coroutine */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
184struct coro { 235typedef struct
185 /* the c coroutine allocated to this perl coroutine, if any */ 236{
186 coro_cctx *cctx; 237 SV *defsv;
187 238 AV *defav;
188 /* data associated with this coroutine (initial args) */ 239 SV *errsv;
189 AV *args; 240 SV *irsgv;
190 int refcnt;
191 int flags; /* CF_ flags */
192
193 /* optionally saved, might be zero */
194 AV *defav; /* @_ */
195 SV *defsv; /* $_ */
196 SV *errsv; /* $@ */
197 IO *deffh; /* default filehandle */
198 SV *irssv; /* $/ */
199 SV *irssv_sv; /* real $/ cache */
200
201#define VAR(name,type) type name; 241#define VAR(name,type) type name;
202# include "state.h" 242# include "state.h"
203#undef VAR 243#undef VAR
244} perl_slots;
245
246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
247
248/* this is a structure representing a perl-level coroutine */
249struct coro {
250 /* the C coroutine allocated to this perl coroutine, if any */
251 coro_cctx *cctx;
252
253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
255 AV *mainstack;
256 perl_slots *slot; /* basically the saved sp */
257
258 CV *startcv; /* the CV to execute */
259 AV *args; /* data associated with this coroutine (initial args) */
260 int refcnt; /* coroutines are refcounted, yes */
261 int flags; /* CF_ flags */
262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
204 264
205 /* statistics */ 265 /* statistics */
206 int usecount; /* number of switches to this coro */ 266 int usecount; /* number of transfers to this coro */
207 267
208 /* coro process data */ 268 /* coro process data */
209 int prio; 269 int prio;
270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
272
273 /* async_pool */
274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
210 277
211 /* linked list */ 278 /* linked list */
212 struct coro *next, *prev; 279 struct coro *next, *prev;
213 HV *hv; /* the perl hash associated with this coro, if any */
214}; 280};
215 281
216typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
217typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
218 289
219/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
220 291
221#define PRIO_MAX 3 292#define PRIO_MAX 3
222#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
225#define PRIO_IDLE -3 296#define PRIO_IDLE -3
226#define PRIO_MIN -4 297#define PRIO_MIN -4
227 298
228/* for Coro.pm */ 299/* for Coro.pm */
229static SV *coro_current; 300static SV *coro_current;
301static SV *coro_readyhook;
230static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
231static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
232static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
233 306
234/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
346}
235 347
236static AV * 348static AV *
237coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
238{ 350{
239 AV *padlist = CvPADLIST (cv); 351 AV *padlist = CvPADLIST (cv);
240 AV *newpadlist, *newpad; 352 AV *newpadlist, *newpad;
241 353
242 newpadlist = newAV (); 354 newpadlist = newAV ();
243 AvREAL_off (newpadlist); 355 AvREAL_off (newpadlist);
244#if PERL_VERSION_ATLEAST (5,9,0) 356#if PERL_VERSION_ATLEAST (5,10,0)
245 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 357 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
246#else 358#else
247 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 359 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
248#endif 360#endif
249 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 361 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
250 --AvFILLp (padlist); 362 --AvFILLp (padlist);
251 363
252 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 364 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
253 av_store (newpadlist, 1, (SV *)newpad); 365 av_store (newpadlist, 1, (SV *)newpad);
254 366
255 return newpadlist; 367 return newpadlist;
256} 368}
257 369
… …
287 399
288 /* casting is fun. */ 400 /* casting is fun. */
289 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 401 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
290 free_padlist (aTHX_ padlist); 402 free_padlist (aTHX_ padlist);
291 403
292 SvREFCNT_dec (av); 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
293 405
294 return 0; 406 return 0;
295} 407}
296 408
409#define CORO_MAGIC_type_cv 26
297#define PERL_MAGIC_coro PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
298 411
299static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 412static MGVTBL coro_cv_vtbl = {
413 0, 0, 0, 0,
414 coro_cv_free
415};
300 416
301#define CORO_MAGIC(cv) \ 417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
302 SvMAGIC (cv) \ 419 ? SvMAGIC (sv) \
303 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 420 : mg_find (sv, type))
304 ? SvMAGIC (cv) \ 421
305 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 422#define CORO_MAGIC(sv, type) \
423 (expect_true (SvMAGIC (sv)) \
424 ? CORO_MAGIC_NN (sv, type) \
306 : 0 425 : 0)
307 426
308static struct coro * 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
429
430INLINE struct coro *
309SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
310{ 432{
311 HV *stash; 433 HV *stash;
312 MAGIC *mg; 434 MAGIC *mg;
313 435
314 if (SvROK (coro)) 436 if (SvROK (coro))
315 coro = SvRV (coro); 437 coro = SvRV (coro);
316 438
317 if (SvTYPE (coro) != SVt_PVHV) 439 if (expect_false (SvTYPE (coro) != SVt_PVHV))
318 croak ("Coro::State object required"); 440 croak ("Coro::State object required");
319 441
320 stash = SvSTASH (coro); 442 stash = SvSTASH (coro);
321 if (stash != coro_stash && stash != coro_state_stash) 443 if (expect_false (stash != coro_stash && stash != coro_state_stash))
322 { 444 {
323 /* very slow, but rare, check */ 445 /* very slow, but rare, check */
324 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 446 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
325 croak ("Coro::State object required"); 447 croak ("Coro::State object required");
326 } 448 }
327 449
328 mg = CORO_MAGIC (coro); 450 mg = CORO_MAGIC_state (coro);
329 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
330} 452}
331 453
332#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
333 455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
459
334/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
335static void 461static void
336get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
337{ 463{
338 MAGIC *mg = CORO_MAGIC (cv); 464 MAGIC *mg = CORO_MAGIC_cv (cv);
339 AV *av; 465 AV *av;
340 466
341 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 467 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
342 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 468 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
343 else 469 else
344 { 470 {
345#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
346 /* this is probably cleaner, but also slower? */ 472 /* this is probably cleaner? but also slower! */
473 /* in practise, it seems to be less stable */
347 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
348 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
349 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
350 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
351#else 478#else
352 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
355} 482}
356 483
357static void 484static void
358put_padlist (pTHX_ CV *cv) 485put_padlist (pTHX_ CV *cv)
359{ 486{
360 MAGIC *mg = CORO_MAGIC (cv); 487 MAGIC *mg = CORO_MAGIC_cv (cv);
361 AV *av; 488 AV *av;
362 489
363 if (!mg) 490 if (expect_false (!mg))
364 { 491 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
365 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
366 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
367 mg->mg_virtual = &vtbl_coro;
368 mg->mg_obj = (SV *)newAV ();
369 }
370 492
371 av = (AV *)mg->mg_obj; 493 av = (AV *)mg->mg_obj;
372 494
373 if (AvFILLp (av) >= AvMAX (av)) 495 if (expect_false (AvFILLp (av) >= AvMAX (av)))
374 av_extend (av, AvMAX (av) + 1); 496 av_extend (av, AvMAX (av) + 1);
375 497
376 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 498 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
377} 499}
378 500
379/** load & save, init *******************************************************/ 501/** load & save, init *******************************************************/
380 502
381static void 503static void
382load_perl (pTHX_ Coro__State c) 504load_perl (pTHX_ Coro__State c)
383{ 505{
506 perl_slots *slot = c->slot;
507 c->slot = 0;
508
509 PL_mainstack = c->mainstack;
510
511 GvSV (PL_defgv) = slot->defsv;
512 GvAV (PL_defgv) = slot->defav;
513 GvSV (PL_errgv) = slot->errsv;
514 GvSV (irsgv) = slot->irsgv;
515
384#define VAR(name,type) PL_ ## name = c->name; 516 #define VAR(name,type) PL_ ## name = slot->name;
385# include "state.h" 517 # include "state.h"
386#undef VAR 518 #undef VAR
387
388 GvSV (PL_defgv) = c->defsv;
389 GvAV (PL_defgv) = c->defav;
390 GvSV (PL_errgv) = c->errsv;
391 PL_defoutgv = c->deffh;
392 PL_rs = c->irssv;
393 GvSV (irsgv) = c->irssv_sv;
394 519
395 { 520 {
396 dSP; 521 dSP;
522
397 CV *cv; 523 CV *cv;
398 524
399 /* now do the ugly restore mess */ 525 /* now do the ugly restore mess */
400 while ((cv = (CV *)POPs)) 526 while (expect_true (cv = (CV *)POPs))
401 { 527 {
402 put_padlist (aTHX_ cv); /* mark this padlist as available */ 528 put_padlist (aTHX_ cv); /* mark this padlist as available */
403 CvDEPTH (cv) = PTR2IV (POPs); 529 CvDEPTH (cv) = PTR2IV (POPs);
404 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
405 } 531 }
406 532
407 PUTBACK; 533 PUTBACK;
408 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
409} 538}
410 539
411static void 540static void
412save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
413{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
414 { 546 {
415 dSP; 547 dSP;
416 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
417 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
418 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
424 556
425 XPUSHs (Nullsv); 557 XPUSHs (Nullsv);
426 /* this loop was inspired by pp_caller */ 558 /* this loop was inspired by pp_caller */
427 for (;;) 559 for (;;)
428 { 560 {
429 while (cxix >= 0) 561 while (expect_true (cxix >= 0))
430 { 562 {
431 PERL_CONTEXT *cx = &ccstk[cxix--]; 563 PERL_CONTEXT *cx = &ccstk[cxix--];
432 564
433 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 565 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
434 { 566 {
435 CV *cv = cx->blk_sub.cv; 567 CV *cv = cx->blk_sub.cv;
436 568
437 if (CvDEPTH (cv)) 569 if (expect_true (CvDEPTH (cv)))
438 { 570 {
439 EXTEND (SP, 3); 571 EXTEND (SP, 3);
440 PUSHs ((SV *)CvPADLIST (cv)); 572 PUSHs ((SV *)CvPADLIST (cv));
441 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 573 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
442 PUSHs ((SV *)cv); 574 PUSHs ((SV *)cv);
443 575
444 CvDEPTH (cv) = 0; 576 CvDEPTH (cv) = 0;
445 get_padlist (aTHX_ cv); 577 get_padlist (aTHX_ cv);
446 } 578 }
447 } 579 }
448 } 580 }
449 581
450 if (top_si->si_type == PERLSI_MAIN) 582 if (expect_true (top_si->si_type == PERLSI_MAIN))
451 break; 583 break;
452 584
453 top_si = top_si->si_prev; 585 top_si = top_si->si_prev;
454 ccstk = top_si->si_cxstack; 586 ccstk = top_si->si_cxstack;
455 cxix = top_si->si_cxix; 587 cxix = top_si->si_cxix;
456 } 588 }
457 589
458 PUTBACK; 590 PUTBACK;
459 } 591 }
460 592
593 /* allocate some space on the context stack for our purposes */
594 /* we manually unroll here, as usually 2 slots is enough */
595 if (SLOT_COUNT >= 1) CXINC;
596 if (SLOT_COUNT >= 2) CXINC;
597 if (SLOT_COUNT >= 3) CXINC;
598 {
599 int i;
600 for (i = 3; i < SLOT_COUNT; ++i)
601 CXINC;
602 }
603 cxstack_ix -= SLOT_COUNT; /* undo allocation */
604
605 c->mainstack = PL_mainstack;
606
607 {
608 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
609
461 c->defav = GvAV (PL_defgv); 610 slot->defav = GvAV (PL_defgv);
462 c->defsv = DEFSV; 611 slot->defsv = DEFSV;
463 c->errsv = ERRSV; 612 slot->errsv = ERRSV;
464 c->deffh = PL_defoutgv;
465 c->irssv = PL_rs;
466 c->irssv_sv = GvSV (irsgv); 613 slot->irsgv = GvSV (irsgv);
467 614
468#define VAR(name,type)c->name = PL_ ## name; 615 #define VAR(name,type) slot->name = PL_ ## name;
469# include "state.h" 616 # include "state.h"
470#undef VAR 617 #undef VAR
618 }
471} 619}
472 620
473/* 621/*
474 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
475 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
476 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
477 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
478 */ 626 */
479#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
480# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
481#else 629#else
482static void 630static void
483coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
484{ 632{
485 PL_curstackinfo = new_stackinfo(64, 6); 633 PL_curstackinfo = new_stackinfo(32, 8);
486 PL_curstackinfo->si_type = PERLSI_MAIN; 634 PL_curstackinfo->si_type = PERLSI_MAIN;
487 PL_curstack = PL_curstackinfo->si_stack; 635 PL_curstack = PL_curstackinfo->si_stack;
488 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 636 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489 637
490 PL_stack_base = AvARRAY(PL_curstack); 638 PL_stack_base = AvARRAY(PL_curstack);
491 PL_stack_sp = PL_stack_base; 639 PL_stack_sp = PL_stack_base;
492 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 640 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493 641
494 New(50,PL_tmps_stack,64,SV*); 642 New(50,PL_tmps_stack,32,SV*);
495 PL_tmps_floor = -1; 643 PL_tmps_floor = -1;
496 PL_tmps_ix = -1; 644 PL_tmps_ix = -1;
497 PL_tmps_max = 64; 645 PL_tmps_max = 32;
498 646
499 New(54,PL_markstack,16,I32); 647 New(54,PL_markstack,16,I32);
500 PL_markstack_ptr = PL_markstack; 648 PL_markstack_ptr = PL_markstack;
501 PL_markstack_max = PL_markstack + 16; 649 PL_markstack_max = PL_markstack + 16;
502 650
503#ifdef SET_MARK_OFFSET 651#ifdef SET_MARK_OFFSET
504 SET_MARK_OFFSET; 652 SET_MARK_OFFSET;
505#endif 653#endif
506 654
507 New(54,PL_scopestack,16,I32); 655 New(54,PL_scopestack,8,I32);
508 PL_scopestack_ix = 0; 656 PL_scopestack_ix = 0;
509 PL_scopestack_max = 16; 657 PL_scopestack_max = 8;
510 658
511 New(54,PL_savestack,64,ANY); 659 New(54,PL_savestack,24,ANY);
512 PL_savestack_ix = 0; 660 PL_savestack_ix = 0;
513 PL_savestack_max = 64; 661 PL_savestack_max = 24;
514 662
515#if !PERL_VERSION_ATLEAST (5,9,0) 663#if !PERL_VERSION_ATLEAST (5,10,0)
516 New(54,PL_retstack,4,OP*); 664 New(54,PL_retstack,4,OP*);
517 PL_retstack_ix = 0; 665 PL_retstack_ix = 0;
518 PL_retstack_max = 4; 666 PL_retstack_max = 4;
519#endif 667#endif
520} 668}
… …
522 670
523/* 671/*
524 * destroy the stacks, the callchain etc... 672 * destroy the stacks, the callchain etc...
525 */ 673 */
526static void 674static void
527coro_destroy_stacks (pTHX) 675coro_destruct_stacks (pTHX)
528{ 676{
529 while (PL_curstackinfo->si_next) 677 while (PL_curstackinfo->si_next)
530 PL_curstackinfo = PL_curstackinfo->si_next; 678 PL_curstackinfo = PL_curstackinfo->si_next;
531 679
532 while (PL_curstackinfo) 680 while (PL_curstackinfo)
… …
543 691
544 Safefree (PL_tmps_stack); 692 Safefree (PL_tmps_stack);
545 Safefree (PL_markstack); 693 Safefree (PL_markstack);
546 Safefree (PL_scopestack); 694 Safefree (PL_scopestack);
547 Safefree (PL_savestack); 695 Safefree (PL_savestack);
548#if !PERL_VERSION_ATLEAST (5,9,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
549 Safefree (PL_retstack); 697 Safefree (PL_retstack);
550#endif 698#endif
551} 699}
700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
552 709
553static size_t 710static size_t
554coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
555{ 712{
556 size_t rss = sizeof (coro); 713 size_t rss = sizeof (*coro);
557 714
558 if (coro->mainstack) 715 if (coro->mainstack)
559 { 716 {
560 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
561 { 718 {
562 #define VAR(name,type)coro->name = PL_ ## name; 719 #define SYM(sym) PL_ ## sym
563 # include "state.h" 720 CORO_RSS;
564 #undef VAR 721 #undef SYM
565 } 722 }
566 723 else
567 rss += sizeof (coro->curstackinfo); 724 {
568 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 725 #define SYM(sym) coro->slot->sym
569 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
570 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 727 #undef SYM
571 rss += coro->tmps_max * sizeof (SV *); 728 }
572 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
573 rss += coro->scopestack_max * sizeof (I32);
574 rss += coro->savestack_max * sizeof (ANY);
575
576#if !PERL_VERSION_ATLEAST (5,9,0)
577 rss += coro->retstack_max * sizeof (OP *);
578#endif
579 } 729 }
580 730
581 return rss; 731 return rss;
582} 732}
583 733
584/** coroutine stack handling ************************************************/ 734/** coroutine stack handling ************************************************/
585 735
736static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
737static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
738static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
739
740/* apparently < 5.8.8 */
741#ifndef MgPV_nolen_const
742#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
743 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
744 (const char*)(mg)->mg_ptr)
745#endif
746
747/*
748 * This overrides the default magic get method of %SIG elements.
749 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
750 * and instead of tryign to save and restore the hash elements, we just provide
751 * readback here.
752 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
753 * not expecting this to actually change the hook. This is a potential problem
754 * when a schedule happens then, but we ignore this.
755 */
586static void 756static int
757coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
758{
759 const char *s = MgPV_nolen_const (mg);
760
761 if (*s == '_')
762 {
763 SV **svp = 0;
764
765 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
766 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
767
768 if (svp)
769 {
770 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
771 return 0;
772 }
773 }
774
775 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
776}
777
778static int
779coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
780{
781 const char *s = MgPV_nolen_const (mg);
782
783 if (*s == '_')
784 {
785 SV **svp = 0;
786
787 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
788 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
789
790 if (svp)
791 {
792 SV *old = *svp;
793 *svp = 0;
794 SvREFCNT_dec (old);
795 return 0;
796 }
797 }
798
799 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
800}
801
802static int
803coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
804{
805 const char *s = MgPV_nolen_const (mg);
806
807 if (*s == '_')
808 {
809 SV **svp = 0;
810
811 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
812 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813
814 if (svp)
815 {
816 SV *old = *svp;
817 *svp = newSVsv (sv);
818 SvREFCNT_dec (old);
819 return 0;
820 }
821 }
822
823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
824}
825
826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
587coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
588{ 843{
589 /* 844 /*
590 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
591 */ 846 */
… …
594 PL_runops = RUNOPS_DEFAULT; 849 PL_runops = RUNOPS_DEFAULT;
595 PL_curcop = &PL_compiling; 850 PL_curcop = &PL_compiling;
596 PL_in_eval = EVAL_NULL; 851 PL_in_eval = EVAL_NULL;
597 PL_comppad = 0; 852 PL_comppad = 0;
598 PL_curpm = 0; 853 PL_curpm = 0;
854 PL_curpad = 0;
599 PL_localizing = 0; 855 PL_localizing = 0;
600 PL_dirty = 0; 856 PL_dirty = 0;
601 PL_restartop = 0; 857 PL_restartop = 0;
858#if PERL_VERSION_ATLEAST (5,10,0)
859 PL_parser = 0;
860#endif
861
862 /* recreate the die/warn hooks */
863 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
864 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602 865
603 GvSV (PL_defgv) = NEWSV (0, 0); 866 GvSV (PL_defgv) = newSV (0);
604 GvAV (PL_defgv) = coro->args; coro->args = 0; 867 GvAV (PL_defgv) = coro->args; coro->args = 0;
605 GvSV (PL_errgv) = NEWSV (0, 0); 868 GvSV (PL_errgv) = newSV (0);
606 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 869 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
607 PL_rs = newSVsv (GvSV (irsgv)); 870 PL_rs = newSVsv (GvSV (irsgv));
608 871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
609 {
610 IO *io = newIO ();
611 PL_defoutgv = newGVgen ("Coro");
612 GvIOp(PL_defoutgv) = io;
613 IoTYPE (io) = IoTYPE_WRONLY;
614 IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
615 IoFLAGS (io) |= IOf_FLUSH;
616 }
617 872
618 { 873 {
619 dSP; 874 dSP;
620 LOGOP myop; 875 UNOP myop;
621 876
622 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
623 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
624 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
625 881
626 PUSHMARK (SP); 882 PUSHMARK (SP);
627 XPUSHs (av_shift (GvAV (PL_defgv))); 883 PUSHs ((SV *)coro->startcv);
628 PUTBACK; 884 PUTBACK;
629 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
630 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631 SPAGAIN;
632 } 887 }
633 888
634 ENTER; /* necessary e.g. for dounwind */ 889 /* this newly created coroutine might be run on an existing cctx which most
635} 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
891 */
892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
636 894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
905}
906
637static void 907static void
638coro_destroy (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
639{ 909{
640 if (!IN_DESTRUCT) 910 if (!IN_DESTRUCT)
641 { 911 {
642 /* restore all saved variables and stuff */ 912 /* restore all saved variables and stuff */
643 LEAVE_SCOPE (0); 913 LEAVE_SCOPE (0);
… …
659 SvREFCNT_dec (GvSV (PL_errgv)); 929 SvREFCNT_dec (GvSV (PL_errgv));
660 SvREFCNT_dec (PL_defoutgv); 930 SvREFCNT_dec (PL_defoutgv);
661 SvREFCNT_dec (PL_rs); 931 SvREFCNT_dec (PL_rs);
662 SvREFCNT_dec (GvSV (irsgv)); 932 SvREFCNT_dec (GvSV (irsgv));
663 933
934 SvREFCNT_dec (PL_diehook);
935 SvREFCNT_dec (PL_warnhook);
936
937 SvREFCNT_dec (coro->saved_deffh);
938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
941
664 coro_destroy_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
665} 943}
666 944
667static void 945INLINE void
668free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
669{ 947{
670 if (coro_mortal) 948 if (expect_true (coro_mortal))
671 { 949 {
672 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
673 coro_mortal = 0; 951 coro_mortal = 0;
674 } 952 }
675} 953}
… …
677static int 955static int
678runops_trace (pTHX) 956runops_trace (pTHX)
679{ 957{
680 COP *oldcop = 0; 958 COP *oldcop = 0;
681 int oldcxix = -2; 959 int oldcxix = -2;
682 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
683 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
684 962
685 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
686 { 964 {
687 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
704 bot = PL_stack_base + cx->blk_oldsp + 1; 982 bot = PL_stack_base + cx->blk_oldsp + 1;
705 top = cx->blk_gimme == G_ARRAY ? SP + 1 983 top = cx->blk_gimme == G_ARRAY ? SP + 1
706 : cx->blk_gimme == G_SCALAR ? bot + 1 984 : cx->blk_gimme == G_SCALAR ? bot + 1
707 : bot; 985 : bot;
708 986
987 av_extend (av, top - bot);
709 while (bot < top) 988 while (bot < top)
710 av_push (av, SvREFCNT_inc (*bot++)); 989 av_push (av, SvREFCNT_inc_NN (*bot++));
711 990
712 PL_runops = RUNOPS_DEFAULT; 991 PL_runops = RUNOPS_DEFAULT;
713 ENTER; 992 ENTER;
714 SAVETMPS; 993 SAVETMPS;
715 EXTEND (SP, 3); 994 EXTEND (SP, 3);
… …
753 SAVETMPS; 1032 SAVETMPS;
754 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
755 PUSHMARK (SP); 1034 PUSHMARK (SP);
756 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
757 PUSHs (fullname); 1036 PUSHs (fullname);
758 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
759 PUTBACK; 1038 PUTBACK;
760 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
761 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
762 SPAGAIN; 1041 SPAGAIN;
763 FREETMPS; 1042 FREETMPS;
… …
795 1074
796 TAINT_NOT; 1075 TAINT_NOT;
797 return 0; 1076 return 0;
798} 1077}
799 1078
800/* inject a fake call to Coro::State::_cctx_init into the execution */ 1079static struct coro_cctx *cctx_ssl_cctx;
801/* _cctx_init should be careful, as it could be called at almost any time */ 1080static struct CoroSLF cctx_ssl_frame;
802/* during execution of a perl program */ 1081
1082static void
1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084{
1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1086 ta->next = 0;
1087}
1088
1089static int
1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091{
1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
803static void NOINLINE 1098static void NOINLINE
804prepare_cctx (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
805{ 1100{
806 dSP;
807 LOGOP myop;
808
809 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
810 1102
811 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
812 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
813 1105
814 Zero (&myop, 1, LOGOP); 1106 /* we already must be executing an SLF op, there is no other valid way
815 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
816 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
817 1110
818 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
819 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
820 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1113 cctx_ssl_frame = slf_frame;
821 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
822 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
823 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
824 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117}
825 SPAGAIN; 1118
1119/* the tail of transfer: execute stuff we can only do after a transfer */
1120INLINE void
1121transfer_tail (pTHX)
1122{
1123 free_coro_mortal (aTHX);
826} 1124}
827 1125
828/* 1126/*
829 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
830 */ 1128 */
831static void 1129static void
832coro_run (void *arg) 1130cctx_run (void *arg)
833{ 1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
834 dTHX; 1138 dTHX;
835 1139
836 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1140 /* normally we would need to skip the entersub here */
837 UNLOCK; 1141 /* not doing so will re-execute it, which is exactly what we want */
838
839 /* we now skip the entersub that lead to transfer() */
840 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
841 1143
842 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
843 prepare_cctx (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
844 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
845 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
846 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
847 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
848
849 /* 1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1157
1158 /*
850 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
851 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
852 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
853 * bootstrap-time "top" top_env, as we cannot restore the "main" 1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
854 * coroutine as Coro has no such concept 1163 * coroutine as Coro has no such concept
855 */ 1164 */
856 PL_top_env = main_top_env; 1165 PL_top_env = main_top_env;
857 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1166 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167 }
858} 1168}
859 1169
860static coro_cctx * 1170static coro_cctx *
861cctx_new () 1171cctx_new ()
862{ 1172{
863 coro_cctx *cctx; 1173 coro_cctx *cctx;
1174
1175 ++cctx_count;
1176 New (0, cctx, 1, coro_cctx);
1177
1178 cctx->gen = cctx_gen;
1179 cctx->flags = 0;
1180 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1181
1182 return cctx;
1183}
1184
1185/* create a new cctx only suitable as source */
1186static coro_cctx *
1187cctx_new_empty ()
1188{
1189 coro_cctx *cctx = cctx_new ();
1190
1191 cctx->sptr = 0;
1192 coro_create (&cctx->cctx, 0, 0, 0, 0);
1193
1194 return cctx;
1195}
1196
1197/* create a new cctx suitable as destination/running a perl interpreter */
1198static coro_cctx *
1199cctx_new_run ()
1200{
1201 coro_cctx *cctx = cctx_new ();
864 void *stack_start; 1202 void *stack_start;
865 size_t stack_size; 1203 size_t stack_size;
866 1204
867 ++cctx_count;
868
869 Newz (0, cctx, 1, coro_cctx);
870
871#if HAVE_MMAP 1205#if HAVE_MMAP
872
873 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1206 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
874 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
875 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1208 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
876 1209
877 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
878 { 1211 {
879# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
880 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
881# endif 1214 #endif
882 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
883 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
884 cctx->flags |= CC_MAPPED; 1217 cctx->flags |= CC_MAPPED;
885 } 1218 }
886 else 1219 else
887#endif 1220#endif
888 { 1221 {
889 cctx->ssize = coro_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
890 New (0, cctx->sptr, coro_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
891 1224
892 if (!cctx->sptr) 1225 if (!cctx->sptr)
893 { 1226 {
894 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
895 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
896 } 1229 }
897 1230
898 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
899 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
900 } 1233 }
901 1234
902 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1235 #if CORO_USE_VALGRIND
1236 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1237 #endif
1238
903 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1239 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
904 1240
905 return cctx; 1241 return cctx;
906} 1242}
907 1243
908static void 1244static void
… …
910{ 1246{
911 if (!cctx) 1247 if (!cctx)
912 return; 1248 return;
913 1249
914 --cctx_count; 1250 --cctx_count;
1251 coro_destroy (&cctx->cctx);
915 1252
1253 /* coro_transfer creates new, empty cctx's */
1254 if (cctx->sptr)
1255 {
916#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
917 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
918#endif 1258 #endif
919 1259
920#if HAVE_MMAP 1260#if HAVE_MMAP
921 if (cctx->flags & CC_MAPPED) 1261 if (cctx->flags & CC_MAPPED)
922 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
923 else 1263 else
924#endif 1264#endif
925 Safefree (cctx->sptr); 1265 Safefree (cctx->sptr);
1266 }
926 1267
927 Safefree (cctx); 1268 Safefree (cctx);
928} 1269}
1270
1271/* wether this cctx should be destructed */
1272#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
929 1273
930static coro_cctx * 1274static coro_cctx *
931cctx_get (pTHX) 1275cctx_get (pTHX)
932{ 1276{
933 while (cctx_first) 1277 while (expect_true (cctx_first))
934 { 1278 {
935 coro_cctx *cctx = cctx_first; 1279 coro_cctx *cctx = cctx_first;
936 cctx_first = cctx->next; 1280 cctx_first = cctx->next;
937 --cctx_idle; 1281 --cctx_idle;
938 1282
939 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1283 if (expect_true (!CCTX_EXPIRED (cctx)))
940 return cctx; 1284 return cctx;
941 1285
942 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
943 } 1287 }
944 1288
945 return cctx_new (); 1289 return cctx_new_run ();
946} 1290}
947 1291
948static void 1292static void
949cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
950{ 1294{
1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1296
951 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
952 if (cctx_idle >= MAX_IDLE_CCTX) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
953 { 1299 {
954 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
955 cctx_first = first->next; 1301 cctx_first = first->next;
956 --cctx_idle; 1302 --cctx_idle;
957 1303
… …
963 cctx_first = cctx; 1309 cctx_first = cctx;
964} 1310}
965 1311
966/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
967 1313
968static void NOINLINE 1314static void
969transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
970{ 1316{
971 if (prev != next) 1317 /* TODO: throwing up here is considered harmful */
1318
1319 if (expect_true (prev != next))
972 { 1320 {
973 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
974 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
975 1323
976 if (next->flags & CF_RUNNING) 1324 if (expect_false (next->flags & CF_RUNNING))
977 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
978 1326
979 if (next->flags & CF_DESTROYED) 1327 if (expect_false (next->flags & CF_DESTROYED))
980 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
981 1329
1330#if !PERL_VERSION_ATLEAST (5,10,0)
982 if (PL_lex_state != LEX_NOTPARSING) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
983 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1333#endif
984 } 1334 }
985} 1335}
986 1336
987/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
988static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
989transfer (pTHX_ struct coro *prev, struct coro *next) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
990{ 1340{
991 dSTACKLEVEL; 1341 dSTACKLEVEL;
992 1342
993 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
994 if (!next) 1344 if (expect_false (!next))
995 { 1345 {
996 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
997 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
998 } 1348 }
999 else if (prev != next) 1349 else if (expect_true (prev != next))
1000 { 1350 {
1001 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
1002 1352
1003 if (prev->flags & CF_NEW) 1353 if (expect_false (prev->flags & CF_NEW))
1004 { 1354 {
1005 /* create a new empty context */ 1355 /* create a new empty/source context */
1006 Newz (0, prev->cctx, 1, coro_cctx); 1356 prev->cctx = cctx_new_empty ();
1007 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
1008 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1009 } 1359 }
1010 1360
1011 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1012 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1013 1363
1014 LOCK; 1364 /* first get rid of the old state */
1365 save_perl (aTHX_ prev);
1015 1366
1016 if (next->flags & CF_NEW) 1367 if (expect_false (next->flags & CF_NEW))
1017 { 1368 {
1018 /* need to start coroutine */ 1369 /* need to start coroutine */
1019 next->flags &= ~CF_NEW; 1370 next->flags &= ~CF_NEW;
1020 /* first get rid of the old state */
1021 save_perl (aTHX_ prev);
1022 /* setup coroutine call */ 1371 /* setup coroutine call */
1023 coro_setup (aTHX_ next); 1372 coro_setup (aTHX_ next);
1024 } 1373 }
1025 else 1374 else
1375 load_perl (aTHX_ next);
1376
1377 prev__cctx = prev->cctx;
1378
1379 /* possibly untie and reuse the cctx */
1380 if (expect_true (
1381 prev__cctx->idle_sp == STACKLEVEL
1382 && !(prev__cctx->flags & CC_TRACE)
1383 && !force_cctx
1384 ))
1026 { 1385 {
1027 /* coroutine already started */
1028 save_perl (aTHX_ prev);
1029 load_perl (aTHX_ next);
1030 }
1031
1032 prev__cctx = prev->cctx;
1033
1034 /* possibly "free" the cctx */
1035 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1036 {
1037 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1038 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1039 1388
1040 prev->cctx = 0; 1389 prev->cctx = 0;
1390
1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1392 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1393 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1394 if (!next->cctx)
1395 next->cctx = cctx_get (aTHX);
1041 1396
1042 cctx_put (prev__cctx); 1397 cctx_put (prev__cctx);
1043 } 1398 }
1044 1399
1045 ++next->usecount; 1400 ++next->usecount;
1046 1401
1047 if (!next->cctx) 1402 if (expect_true (!next->cctx))
1048 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1049 1404
1050 if (prev__cctx != next->cctx) 1405 if (expect_false (prev__cctx != next->cctx))
1051 { 1406 {
1052 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1053 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1054 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1055 } 1410 }
1056 1411
1057 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
1058 UNLOCK;
1059 } 1413 }
1060} 1414}
1061 1415
1062struct transfer_args
1063{
1064 struct coro *prev, *next;
1065};
1066
1067#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1416#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1068#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1069 1418
1070/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
1071 1420
1072static int 1421static int
1073coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1074{ 1423{
1075 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1076 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1077 1429
1078 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1079 1431
1080 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1081 { 1433 {
1082 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1083 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1084 LOCK;
1085 --coro_nready; 1436 --coro_nready;
1086 UNLOCK;
1087 } 1437 }
1088 else 1438 else
1089 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1090 1440
1091 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1092 { 1442 {
1093 struct coro temp; 1443 struct coro temp;
1094 1444
1095 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1096 croak ("FATAL: tried to destroy currently running coroutine");
1097 1446
1098 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1099 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1100 1449
1101 coro_destroy (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
1102 1451
1103 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1452 load_perl (aTHX_ &temp);
1104 1453
1105 coro->mainstack = 0; 1454 coro->slot = 0;
1106 } 1455 }
1107 1456
1108 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1109 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1110 1461
1111 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1112 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1113 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1114 1465
… …
1152# define MGf_DUP 0 1503# define MGf_DUP 0
1153#endif 1504#endif
1154}; 1505};
1155 1506
1156static void 1507static void
1157prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1158{ 1509{
1159 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1160 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1161 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1162} 1513}
1163 1514
1164static void 1515static void
1165api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1166{ 1517{
1167 dTHX;
1168 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1169 1519
1170 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1171 TRANSFER (ta); 1521 TRANSFER (ta, 1);
1522}
1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1172} 1545}
1173 1546
1174/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1175 1548
1176static void 1549INLINE void
1177coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1178{ 1551{
1179 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1180} 1553}
1181 1554
1182static SV * 1555INLINE SV *
1183coro_deq (pTHX_ int min_prio) 1556coro_deq (pTHX)
1184{ 1557{
1185 int prio = PRIO_MAX - PRIO_MIN; 1558 int prio;
1186 1559
1187 min_prio -= PRIO_MIN;
1188 if (min_prio < 0)
1189 min_prio = 0;
1190
1191 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1192 if (AvFILLp (coro_ready [prio]) >= 0) 1561 if (AvFILLp (coro_ready [prio]) >= 0)
1193 return av_shift (coro_ready [prio]); 1562 return av_shift (coro_ready [prio]);
1194 1563
1195 return 0; 1564 return 0;
1196} 1565}
1197 1566
1198static int 1567static int
1199api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1200{ 1569{
1201 dTHX;
1202 struct coro *coro; 1570 struct coro *coro;
1571 SV *sv_hook;
1572 void (*xs_hook)(void);
1203 1573
1204 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
1205 coro_sv = SvRV (coro_sv); 1575 coro_sv = SvRV (coro_sv);
1206 1576
1207 coro = SvSTATE (coro_sv); 1577 coro = SvSTATE (coro_sv);
… …
1209 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1210 return 0; 1580 return 0;
1211 1581
1212 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1213 1583
1214 LOCK; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1215 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1586
1587 coro_enq (aTHX_ coro);
1216 ++coro_nready; 1588 ++coro_nready;
1217 UNLOCK; 1589
1590 if (sv_hook)
1591 {
1592 dSP;
1593
1594 ENTER;
1595 SAVETMPS;
1596
1597 PUSHMARK (SP);
1598 PUTBACK;
1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1600
1601 FREETMPS;
1602 LEAVE;
1603 }
1604
1605 if (xs_hook)
1606 xs_hook ();
1218 1607
1219 return 1; 1608 return 1;
1220} 1609}
1221 1610
1222static int 1611static int
1223api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1224{ 1613{
1225 dTHX;
1226 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1227} 1615}
1228 1616
1617/* expects to own a reference to next->hv */
1618INLINE void
1619prepare_cede_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1229static void 1634static void
1230prepare_schedule (pTHX_ struct transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1231{ 1636{
1232 SV *prev_sv, *next_sv;
1233
1234 for (;;) 1637 for (;;)
1235 { 1638 {
1236 LOCK;
1237 next_sv = coro_deq (aTHX_ PRIO_MIN); 1639 SV *next_sv = coro_deq (aTHX);
1238 1640
1239 /* nothing to schedule: call the idle handler */ 1641 if (expect_false (!next_sv))
1240 if (!next_sv)
1241 { 1642 {
1643 /* nothing to schedule: call the idle handler */
1242 dSP; 1644 dSP;
1243 UNLOCK;
1244 1645
1245 ENTER; 1646 ENTER;
1246 SAVETMPS; 1647 SAVETMPS;
1247 1648
1248 PUSHMARK (SP); 1649 PUSHMARK (SP);
1249 PUTBACK; 1650 PUTBACK;
1250 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1651 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1251 1652
1252 FREETMPS; 1653 FREETMPS;
1253 LEAVE; 1654 LEAVE;
1254 continue;
1255 } 1655 }
1256 1656 else
1257 ta->next = SvSTATE (next_sv);
1258
1259 /* cannot transfer to destroyed coros, skip and look for next */
1260 if (ta->next->flags & CF_DESTROYED)
1261 { 1657 {
1262 UNLOCK; 1658 struct coro *next = SvSTATE_hv (next_sv);
1263 SvREFCNT_dec (next_sv); 1659
1660 /* cannot transfer to destroyed coros, skip and look for next */
1661 if (expect_false (next->flags & CF_DESTROYED))
1264 /* coro_nready is already taken care of by destroy */ 1662 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1265 continue; 1663 else
1664 {
1665 next->flags &= ~CF_READY;
1666 --coro_nready;
1667
1668 return prepare_cede_to (aTHX_ ta, next);
1669 }
1266 } 1670 }
1267
1268 --coro_nready;
1269 UNLOCK;
1270 break;
1271 } 1671 }
1272
1273 /* free this only after the transfer */
1274 prev_sv = SvRV (coro_current);
1275 ta->prev = SvSTATE (prev_sv);
1276 TRANSFER_CHECK (*ta);
1277 assert (ta->next->flags & CF_READY);
1278 ta->next->flags &= ~CF_READY;
1279 SvRV_set (coro_current, next_sv);
1280
1281 LOCK;
1282 free_coro_mortal (aTHX);
1283 coro_mortal = prev_sv;
1284 UNLOCK;
1285} 1672}
1286 1673
1287static void 1674INLINE void
1288prepare_cede (pTHX_ struct transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1289{ 1676{
1290 api_ready (coro_current); 1677 api_ready (aTHX_ coro_current);
1291 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1292} 1679}
1293 1680
1681INLINE void
1682prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1683{
1684 SV *prev = SvRV (coro_current);
1685
1686 if (coro_nready)
1687 {
1688 prepare_schedule (aTHX_ ta);
1689 api_ready (aTHX_ prev);
1690 }
1691 else
1692 prepare_nop (aTHX_ ta);
1693}
1694
1695static void
1696api_schedule (pTHX)
1697{
1698 struct coro_transfer_args ta;
1699
1700 prepare_schedule (aTHX_ &ta);
1701 TRANSFER (ta, 1);
1702}
1703
1294static int 1704static int
1295prepare_cede_notself (pTHX_ struct transfer_args *ta) 1705api_cede (pTHX)
1296{ 1706{
1297 if (coro_nready) 1707 struct coro_transfer_args ta;
1298 { 1708
1299 SV *prev = SvRV (coro_current);
1300 prepare_schedule (aTHX_ ta); 1709 prepare_cede (aTHX_ &ta);
1301 api_ready (prev); 1710
1711 if (expect_true (ta.prev != ta.next))
1712 {
1713 TRANSFER (ta, 1);
1302 return 1; 1714 return 1;
1303 } 1715 }
1304 else 1716 else
1305 return 0; 1717 return 0;
1306} 1718}
1307 1719
1308static void
1309api_schedule (void)
1310{
1311 dTHX;
1312 struct transfer_args ta;
1313
1314 prepare_schedule (aTHX_ &ta);
1315 TRANSFER (ta);
1316}
1317
1318static int 1720static int
1319api_cede (void) 1721api_cede_notself (pTHX)
1320{ 1722{
1321 dTHX; 1723 if (coro_nready)
1724 {
1322 struct transfer_args ta; 1725 struct coro_transfer_args ta;
1323 1726
1324 prepare_cede (aTHX_ &ta); 1727 prepare_cede_notself (aTHX_ &ta);
1325
1326 if (ta.prev != ta.next)
1327 {
1328 TRANSFER (ta); 1728 TRANSFER (ta, 1);
1329 return 1; 1729 return 1;
1330 } 1730 }
1331 else 1731 else
1332 return 0; 1732 return 0;
1333} 1733}
1334 1734
1335static int 1735static void
1336api_cede_notself (void)
1337{
1338 dTHX;
1339 struct transfer_args ta;
1340
1341 if (prepare_cede_notself (aTHX_ &ta))
1342 {
1343 TRANSFER (ta);
1344 return 1;
1345 }
1346 else
1347 return 0;
1348}
1349
1350static void
1351api_trace (SV *coro_sv, int flags) 1736api_trace (pTHX_ SV *coro_sv, int flags)
1352{ 1737{
1353 dTHX;
1354 struct coro *coro = SvSTATE (coro_sv); 1738 struct coro *coro = SvSTATE (coro_sv);
1355 1739
1356 if (flags & CC_TRACE) 1740 if (flags & CC_TRACE)
1357 { 1741 {
1358 if (!coro->cctx) 1742 if (!coro->cctx)
1359 coro->cctx = cctx_new (); 1743 coro->cctx = cctx_new_run ();
1360 else if (!(coro->cctx->flags & CC_TRACE)) 1744 else if (!(coro->cctx->flags & CC_TRACE))
1361 croak ("cannot enable tracing on coroutine with custom stack"); 1745 croak ("cannot enable tracing on coroutine with custom stack,");
1362 1746
1363 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1747 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1364 } 1748 }
1365 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1749 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1366 { 1750 {
1367 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1751 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1368 1752
1369 if (coro->flags & CF_RUNNING) 1753 if (coro->flags & CF_RUNNING)
1370 PL_runops = RUNOPS_DEFAULT; 1754 PL_runops = RUNOPS_DEFAULT;
1371 else 1755 else
1372 coro->runops = RUNOPS_DEFAULT; 1756 coro->slot->runops = RUNOPS_DEFAULT;
1757 }
1758}
1759
1760/*****************************************************************************/
1761/* async pool handler */
1762
1763static int
1764slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1765{
1766 HV *hv = (HV *)SvRV (coro_current);
1767 struct coro *coro = (struct coro *)frame->data;
1768
1769 if (!coro->invoke_cb)
1770 return 1; /* loop till we have invoke */
1771 else
1772 {
1773 hv_store (hv, "desc", sizeof ("desc") - 1,
1774 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1775
1776 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1777
1778 {
1779 dSP;
1780 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1781 PUTBACK;
1373 } 1782 }
1783
1784 SvREFCNT_dec (GvAV (PL_defgv));
1785 GvAV (PL_defgv) = coro->invoke_av;
1786 coro->invoke_av = 0;
1787
1788 return 0;
1789 }
1374} 1790}
1791
1792static void
1793slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1794{
1795 HV *hv = (HV *)SvRV (coro_current);
1796 struct coro *coro = SvSTATE_hv ((SV *)hv);
1797
1798 if (expect_true (coro->saved_deffh))
1799 {
1800 /* subsequent iteration */
1801 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1802 coro->saved_deffh = 0;
1803
1804 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1805 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1806 {
1807 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1808 coro->invoke_av = newAV ();
1809
1810 frame->prepare = prepare_nop;
1811 }
1812 else
1813 {
1814 av_clear (GvAV (PL_defgv));
1815 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1816
1817 coro->prio = 0;
1818
1819 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1820 api_trace (aTHX_ coro_current, 0);
1821
1822 frame->prepare = prepare_schedule;
1823 av_push (av_async_pool, SvREFCNT_inc (hv));
1824 }
1825 }
1826 else
1827 {
1828 /* first iteration, simply fall through */
1829 frame->prepare = prepare_nop;
1830 }
1831
1832 frame->check = slf_check_pool_handler;
1833 frame->data = (void *)coro;
1834}
1835
1836/*****************************************************************************/
1837/* rouse callback */
1838
1839#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1840
1841static void
1842coro_rouse_callback (pTHX_ CV *cv)
1843{
1844 dXSARGS;
1845 SV *data = (SV *)GENSUB_ARG;
1846
1847 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1848 {
1849 /* first call, set args */
1850 AV *av = newAV ();
1851 SV *coro = SvRV (data);
1852
1853 SvRV_set (data, (SV *)av);
1854 api_ready (aTHX_ coro);
1855 SvREFCNT_dec (coro);
1856
1857 /* better take a full copy of the arguments */
1858 while (items--)
1859 av_store (av, items, newSVsv (ST (items)));
1860 }
1861
1862 XSRETURN_EMPTY;
1863}
1864
1865static int
1866slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1867{
1868 SV *data = (SV *)frame->data;
1869
1870 if (CORO_THROW)
1871 return 0;
1872
1873 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1874 return 1;
1875
1876 /* now push all results on the stack */
1877 {
1878 dSP;
1879 AV *av = (AV *)SvRV (data);
1880 int i;
1881
1882 EXTEND (SP, AvFILLp (av) + 1);
1883 for (i = 0; i <= AvFILLp (av); ++i)
1884 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1885
1886 /* we have stolen the elements, so ste length to zero and free */
1887 AvFILLp (av) = -1;
1888 av_undef (av);
1889
1890 PUTBACK;
1891 }
1892
1893 return 0;
1894}
1895
1896static void
1897slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1898{
1899 SV *cb;
1900
1901 if (items)
1902 cb = arg [0];
1903 else
1904 {
1905 struct coro *coro = SvSTATE_current;
1906
1907 if (!coro->rouse_cb)
1908 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1909
1910 cb = sv_2mortal (coro->rouse_cb);
1911 coro->rouse_cb = 0;
1912 }
1913
1914 if (!SvROK (cb)
1915 || SvTYPE (SvRV (cb)) != SVt_PVCV
1916 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1917 croak ("Coro::rouse_wait called with illegal callback argument,");
1918
1919 {
1920 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 frame->data = (void *)data;
1924 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1925 frame->check = slf_check_rouse_wait;
1926 }
1927}
1928
1929static SV *
1930coro_new_rouse_cb (pTHX)
1931{
1932 HV *hv = (HV *)SvRV (coro_current);
1933 struct coro *coro = SvSTATE_hv (hv);
1934 SV *data = newRV_inc ((SV *)hv);
1935 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1936
1937 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1938 SvREFCNT_dec (data); /* magicext increases the refcount */
1939
1940 SvREFCNT_dec (coro->rouse_cb);
1941 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1942
1943 return cb;
1944}
1945
1946/*****************************************************************************/
1947/* schedule-like-function opcode (SLF) */
1948
1949static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1950static const CV *slf_cv;
1951static SV **slf_argv;
1952static int slf_argc, slf_arga; /* count, allocated */
1953static I32 slf_ax; /* top of stack, for restore */
1954
1955/* this restores the stack in the case we patched the entersub, to */
1956/* recreate the stack frame as perl will on following calls */
1957/* since entersub cleared the stack */
1958static OP *
1959pp_restore (pTHX)
1960{
1961 int i;
1962 SV **SP = PL_stack_base + slf_ax;
1963
1964 PUSHMARK (SP);
1965
1966 EXTEND (SP, slf_argc + 1);
1967
1968 for (i = 0; i < slf_argc; ++i)
1969 PUSHs (sv_2mortal (slf_argv [i]));
1970
1971 PUSHs ((SV *)CvGV (slf_cv));
1972
1973 RETURNOP (slf_restore.op_first);
1974}
1975
1976static void
1977slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1978{
1979 SV **arg = (SV **)slf_frame.data;
1980
1981 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1982}
1983
1984static void
1985slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 if (items != 2)
1988 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1989
1990 frame->prepare = slf_prepare_transfer;
1991 frame->check = slf_check_nop;
1992 frame->data = (void *)arg; /* let's hope it will stay valid */
1993}
1994
1995static void
1996slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1997{
1998 frame->prepare = prepare_schedule;
1999 frame->check = slf_check_nop;
2000}
2001
2002static void
2003slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2004{
2005 frame->prepare = prepare_cede;
2006 frame->check = slf_check_nop;
2007}
2008
2009static void
2010slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2011{
2012 frame->prepare = prepare_cede_notself;
2013 frame->check = slf_check_nop;
2014}
2015
2016/*
2017 * these not obviously related functions are all rolled into one
2018 * function to increase chances that they all will call transfer with the same
2019 * stack offset
2020 * SLF stands for "schedule-like-function".
2021 */
2022static OP *
2023pp_slf (pTHX)
2024{
2025 I32 checkmark; /* mark SP to see how many elements check has pushed */
2026
2027 /* set up the slf frame, unless it has already been set-up */
2028 /* the latter happens when a new coro has been started */
2029 /* or when a new cctx was attached to an existing coroutine */
2030 if (expect_true (!slf_frame.prepare))
2031 {
2032 /* first iteration */
2033 dSP;
2034 SV **arg = PL_stack_base + TOPMARK + 1;
2035 int items = SP - arg; /* args without function object */
2036 SV *gv = *sp;
2037
2038 /* do a quick consistency check on the "function" object, and if it isn't */
2039 /* for us, divert to the real entersub */
2040 if (SvTYPE (gv) != SVt_PVGV
2041 || !GvCV (gv)
2042 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2043 return PL_ppaddr[OP_ENTERSUB](aTHX);
2044
2045 if (!(PL_op->op_flags & OPf_STACKED))
2046 {
2047 /* ampersand-form of call, use @_ instead of stack */
2048 AV *av = GvAV (PL_defgv);
2049 arg = AvARRAY (av);
2050 items = AvFILLp (av) + 1;
2051 }
2052
2053 /* now call the init function, which needs to set up slf_frame */
2054 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2055 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2056
2057 /* pop args */
2058 SP = PL_stack_base + POPMARK;
2059
2060 PUTBACK;
2061 }
2062
2063 /* now that we have a slf_frame, interpret it! */
2064 /* we use a callback system not to make the code needlessly */
2065 /* complicated, but so we can run multiple perl coros from one cctx */
2066
2067 do
2068 {
2069 struct coro_transfer_args ta;
2070
2071 slf_frame.prepare (aTHX_ &ta);
2072 TRANSFER (ta, 0);
2073
2074 checkmark = PL_stack_sp - PL_stack_base;
2075 }
2076 while (slf_frame.check (aTHX_ &slf_frame));
2077
2078 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2079
2080 /* exception handling */
2081 if (expect_false (CORO_THROW))
2082 {
2083 SV *exception = sv_2mortal (CORO_THROW);
2084
2085 CORO_THROW = 0;
2086 sv_setsv (ERRSV, exception);
2087 croak (0);
2088 }
2089
2090 /* return value handling - mostly like entersub */
2091 /* make sure we put something on the stack in scalar context */
2092 if (GIMME_V == G_SCALAR)
2093 {
2094 dSP;
2095 SV **bot = PL_stack_base + checkmark;
2096
2097 if (sp == bot) /* too few, push undef */
2098 bot [1] = &PL_sv_undef;
2099 else if (sp != bot + 1) /* too many, take last one */
2100 bot [1] = *sp;
2101
2102 SP = bot + 1;
2103
2104 PUTBACK;
2105 }
2106
2107 return NORMAL;
2108}
2109
2110static void
2111api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2112{
2113 int i;
2114 SV **arg = PL_stack_base + ax;
2115 int items = PL_stack_sp - arg + 1;
2116
2117 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2118
2119 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2120 && PL_op->op_ppaddr != pp_slf)
2121 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2122
2123 CvFLAGS (cv) |= CVf_SLF;
2124 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2125 slf_cv = cv;
2126
2127 /* we patch the op, and then re-run the whole call */
2128 /* we have to put the same argument on the stack for this to work */
2129 /* and this will be done by pp_restore */
2130 slf_restore.op_next = (OP *)&slf_restore;
2131 slf_restore.op_type = OP_CUSTOM;
2132 slf_restore.op_ppaddr = pp_restore;
2133 slf_restore.op_first = PL_op;
2134
2135 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2136
2137 if (PL_op->op_flags & OPf_STACKED)
2138 {
2139 if (items > slf_arga)
2140 {
2141 slf_arga = items;
2142 free (slf_argv);
2143 slf_argv = malloc (slf_arga * sizeof (SV *));
2144 }
2145
2146 slf_argc = items;
2147
2148 for (i = 0; i < items; ++i)
2149 slf_argv [i] = SvREFCNT_inc (arg [i]);
2150 }
2151 else
2152 slf_argc = 0;
2153
2154 PL_op->op_ppaddr = pp_slf;
2155 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2156
2157 PL_op = (OP *)&slf_restore;
2158}
2159
2160/*****************************************************************************/
2161/* PerlIO::cede */
2162
2163typedef struct
2164{
2165 PerlIOBuf base;
2166 NV next, every;
2167} PerlIOCede;
2168
2169static IV
2170PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2171{
2172 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2173
2174 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2175 self->next = nvtime () + self->every;
2176
2177 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2178}
2179
2180static SV *
2181PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2182{
2183 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2184
2185 return newSVnv (self->every);
2186}
2187
2188static IV
2189PerlIOCede_flush (pTHX_ PerlIO *f)
2190{
2191 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2192 double now = nvtime ();
2193
2194 if (now >= self->next)
2195 {
2196 api_cede (aTHX);
2197 self->next = now + self->every;
2198 }
2199
2200 return PerlIOBuf_flush (aTHX_ f);
2201}
2202
2203static PerlIO_funcs PerlIO_cede =
2204{
2205 sizeof(PerlIO_funcs),
2206 "cede",
2207 sizeof(PerlIOCede),
2208 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2209 PerlIOCede_pushed,
2210 PerlIOBuf_popped,
2211 PerlIOBuf_open,
2212 PerlIOBase_binmode,
2213 PerlIOCede_getarg,
2214 PerlIOBase_fileno,
2215 PerlIOBuf_dup,
2216 PerlIOBuf_read,
2217 PerlIOBuf_unread,
2218 PerlIOBuf_write,
2219 PerlIOBuf_seek,
2220 PerlIOBuf_tell,
2221 PerlIOBuf_close,
2222 PerlIOCede_flush,
2223 PerlIOBuf_fill,
2224 PerlIOBase_eof,
2225 PerlIOBase_error,
2226 PerlIOBase_clearerr,
2227 PerlIOBase_setlinebuf,
2228 PerlIOBuf_get_base,
2229 PerlIOBuf_bufsiz,
2230 PerlIOBuf_get_ptr,
2231 PerlIOBuf_get_cnt,
2232 PerlIOBuf_set_ptrcnt,
2233};
2234
2235/*****************************************************************************/
2236/* Coro::Semaphore & Coro::Signal */
2237
2238static SV *
2239coro_waitarray_new (pTHX_ int count)
2240{
2241 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2242 AV *av = newAV ();
2243 SV **ary;
2244
2245 /* unfortunately, building manually saves memory */
2246 Newx (ary, 2, SV *);
2247 AvALLOC (av) = ary;
2248 /*AvARRAY (av) = ary;*/
2249 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2250 AvMAX (av) = 1;
2251 AvFILLp (av) = 0;
2252 ary [0] = newSViv (count);
2253
2254 return newRV_noinc ((SV *)av);
2255}
2256
2257/* semaphore */
2258
2259static void
2260coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2261{
2262 SV *count_sv = AvARRAY (av)[0];
2263 IV count = SvIVX (count_sv);
2264
2265 count += adjust;
2266 SvIVX (count_sv) = count;
2267
2268 /* now wake up as many waiters as are expected to lock */
2269 while (count > 0 && AvFILLp (av) > 0)
2270 {
2271 SV *cb;
2272
2273 /* swap first two elements so we can shift a waiter */
2274 AvARRAY (av)[0] = AvARRAY (av)[1];
2275 AvARRAY (av)[1] = count_sv;
2276 cb = av_shift (av);
2277
2278 if (SvOBJECT (cb))
2279 {
2280 api_ready (aTHX_ cb);
2281 --count;
2282 }
2283 else if (SvTYPE (cb) == SVt_PVCV)
2284 {
2285 dSP;
2286 PUSHMARK (SP);
2287 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2288 PUTBACK;
2289 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2290 }
2291
2292 SvREFCNT_dec (cb);
2293 }
2294}
2295
2296static void
2297coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2298{
2299 /* call $sem->adjust (0) to possibly wake up some other waiters */
2300 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2301}
2302
2303static int
2304slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2305{
2306 AV *av = (AV *)frame->data;
2307 SV *count_sv = AvARRAY (av)[0];
2308
2309 /* if we are about to throw, don't actually acquire the lock, just throw */
2310 if (CORO_THROW)
2311 return 0;
2312 else if (SvIVX (count_sv) > 0)
2313 {
2314 SvSTATE_current->on_destroy = 0;
2315
2316 if (acquire)
2317 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2318 else
2319 coro_semaphore_adjust (aTHX_ av, 0);
2320
2321 return 0;
2322 }
2323 else
2324 {
2325 int i;
2326 /* if we were woken up but can't down, we look through the whole */
2327 /* waiters list and only add us if we aren't in there already */
2328 /* this avoids some degenerate memory usage cases */
2329
2330 for (i = 1; i <= AvFILLp (av); ++i)
2331 if (AvARRAY (av)[i] == SvRV (coro_current))
2332 return 1;
2333
2334 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2335 return 1;
2336 }
2337}
2338
2339static int
2340slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2341{
2342 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2343}
2344
2345static int
2346slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2347{
2348 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2349}
2350
2351static void
2352slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2353{
2354 AV *av = (AV *)SvRV (arg [0]);
2355
2356 if (SvIVX (AvARRAY (av)[0]) > 0)
2357 {
2358 frame->data = (void *)av;
2359 frame->prepare = prepare_nop;
2360 }
2361 else
2362 {
2363 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2364
2365 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2366 frame->prepare = prepare_schedule;
2367
2368 /* to avoid race conditions when a woken-up coro gets terminated */
2369 /* we arrange for a temporary on_destroy that calls adjust (0) */
2370 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2371 }
2372}
2373
2374static void
2375slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2376{
2377 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2378 frame->check = slf_check_semaphore_down;
2379}
2380
2381static void
2382slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2383{
2384 if (items >= 2)
2385 {
2386 /* callback form */
2387 AV *av = (AV *)SvRV (arg [0]);
2388 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2389
2390 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2391
2392 if (SvIVX (AvARRAY (av)[0]) > 0)
2393 coro_semaphore_adjust (aTHX_ av, 0);
2394
2395 frame->prepare = prepare_nop;
2396 frame->check = slf_check_nop;
2397 }
2398 else
2399 {
2400 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2401 frame->check = slf_check_semaphore_wait;
2402 }
2403}
2404
2405/* signal */
2406
2407static void
2408coro_signal_wake (pTHX_ AV *av, int count)
2409{
2410 SvIVX (AvARRAY (av)[0]) = 0;
2411
2412 /* now signal count waiters */
2413 while (count > 0 && AvFILLp (av) > 0)
2414 {
2415 SV *cb;
2416
2417 /* swap first two elements so we can shift a waiter */
2418 cb = AvARRAY (av)[0];
2419 AvARRAY (av)[0] = AvARRAY (av)[1];
2420 AvARRAY (av)[1] = cb;
2421
2422 cb = av_shift (av);
2423
2424 api_ready (aTHX_ cb);
2425 sv_setiv (cb, 0); /* signal waiter */
2426 SvREFCNT_dec (cb);
2427
2428 --count;
2429 }
2430}
2431
2432static int
2433slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2434{
2435 /* if we are about to throw, also stop waiting */
2436 return SvROK ((SV *)frame->data) && !CORO_THROW;
2437}
2438
2439static void
2440slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2441{
2442 AV *av = (AV *)SvRV (arg [0]);
2443
2444 if (SvIVX (AvARRAY (av)[0]))
2445 {
2446 SvIVX (AvARRAY (av)[0]) = 0;
2447 frame->prepare = prepare_nop;
2448 frame->check = slf_check_nop;
2449 }
2450 else
2451 {
2452 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2453
2454 av_push (av, waiter);
2455
2456 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2457 frame->prepare = prepare_schedule;
2458 frame->check = slf_check_signal_wait;
2459 }
2460}
2461
2462/*****************************************************************************/
2463/* Coro::AIO */
2464
2465#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2466
2467/* helper storage struct */
2468struct io_state
2469{
2470 int errorno;
2471 I32 laststype; /* U16 in 5.10.0 */
2472 int laststatval;
2473 Stat_t statcache;
2474};
2475
2476static void
2477coro_aio_callback (pTHX_ CV *cv)
2478{
2479 dXSARGS;
2480 AV *state = (AV *)GENSUB_ARG;
2481 SV *coro = av_pop (state);
2482 SV *data_sv = newSV (sizeof (struct io_state));
2483
2484 av_extend (state, items - 1);
2485
2486 sv_upgrade (data_sv, SVt_PV);
2487 SvCUR_set (data_sv, sizeof (struct io_state));
2488 SvPOK_only (data_sv);
2489
2490 {
2491 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2492
2493 data->errorno = errno;
2494 data->laststype = PL_laststype;
2495 data->laststatval = PL_laststatval;
2496 data->statcache = PL_statcache;
2497 }
2498
2499 /* now build the result vector out of all the parameters and the data_sv */
2500 {
2501 int i;
2502
2503 for (i = 0; i < items; ++i)
2504 av_push (state, SvREFCNT_inc_NN (ST (i)));
2505 }
2506
2507 av_push (state, data_sv);
2508
2509 api_ready (aTHX_ coro);
2510 SvREFCNT_dec (coro);
2511 SvREFCNT_dec ((AV *)state);
2512}
2513
2514static int
2515slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2516{
2517 AV *state = (AV *)frame->data;
2518
2519 /* if we are about to throw, return early */
2520 /* this does not cancel the aio request, but at least */
2521 /* it quickly returns */
2522 if (CORO_THROW)
2523 return 0;
2524
2525 /* one element that is an RV? repeat! */
2526 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2527 return 1;
2528
2529 /* restore status */
2530 {
2531 SV *data_sv = av_pop (state);
2532 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2533
2534 errno = data->errorno;
2535 PL_laststype = data->laststype;
2536 PL_laststatval = data->laststatval;
2537 PL_statcache = data->statcache;
2538
2539 SvREFCNT_dec (data_sv);
2540 }
2541
2542 /* push result values */
2543 {
2544 dSP;
2545 int i;
2546
2547 EXTEND (SP, AvFILLp (state) + 1);
2548 for (i = 0; i <= AvFILLp (state); ++i)
2549 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2550
2551 PUTBACK;
2552 }
2553
2554 return 0;
2555}
2556
2557static void
2558slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2559{
2560 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2561 SV *coro_hv = SvRV (coro_current);
2562 struct coro *coro = SvSTATE_hv (coro_hv);
2563
2564 /* put our coroutine id on the state arg */
2565 av_push (state, SvREFCNT_inc_NN (coro_hv));
2566
2567 /* first see whether we have a non-zero priority and set it as AIO prio */
2568 if (coro->prio)
2569 {
2570 dSP;
2571
2572 static SV *prio_cv;
2573 static SV *prio_sv;
2574
2575 if (expect_false (!prio_cv))
2576 {
2577 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2578 prio_sv = newSViv (0);
2579 }
2580
2581 PUSHMARK (SP);
2582 sv_setiv (prio_sv, coro->prio);
2583 XPUSHs (prio_sv);
2584
2585 PUTBACK;
2586 call_sv (prio_cv, G_VOID | G_DISCARD);
2587 }
2588
2589 /* now call the original request */
2590 {
2591 dSP;
2592 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2593 int i;
2594
2595 PUSHMARK (SP);
2596
2597 /* first push all args to the stack */
2598 EXTEND (SP, items + 1);
2599
2600 for (i = 0; i < items; ++i)
2601 PUSHs (arg [i]);
2602
2603 /* now push the callback closure */
2604 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2605
2606 /* now call the AIO function - we assume our request is uncancelable */
2607 PUTBACK;
2608 call_sv ((SV *)req, G_VOID | G_DISCARD);
2609 }
2610
2611 /* now that the requets is going, we loop toll we have a result */
2612 frame->data = (void *)state;
2613 frame->prepare = prepare_schedule;
2614 frame->check = slf_check_aio_req;
2615}
2616
2617static void
2618coro_aio_req_xs (pTHX_ CV *cv)
2619{
2620 dXSARGS;
2621
2622 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2623
2624 XSRETURN_EMPTY;
2625}
2626
2627/*****************************************************************************/
1375 2628
1376MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2629MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1377 2630
1378PROTOTYPES: DISABLE 2631PROTOTYPES: DISABLE
1379 2632
1380BOOT: 2633BOOT:
1381{ 2634{
1382#ifdef USE_ITHREADS 2635#ifdef USE_ITHREADS
1383 MUTEX_INIT (&coro_mutex); 2636# if CORO_PTHREAD
2637 coro_thx = PERL_GET_CONTEXT;
2638# endif
1384#endif 2639#endif
1385 BOOT_PAGESIZE; 2640 BOOT_PAGESIZE;
1386 2641
1387 irsgv = gv_fetchpv ("/", 1, SVt_PV); 2642 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2643 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2644
2645 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2646 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2647 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2648
2649 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2650 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2651 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1388 2652
1389 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2653 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1390 2654
1391 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2655 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1392 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2656 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1397 main_top_env = PL_top_env; 2661 main_top_env = PL_top_env;
1398 2662
1399 while (main_top_env->je_prev) 2663 while (main_top_env->je_prev)
1400 main_top_env = main_top_env->je_prev; 2664 main_top_env = main_top_env->je_prev;
1401 2665
2666 {
2667 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2668
2669 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2670 hv_store_ent (PL_custom_op_names, slf,
2671 newSVpv ("coro_slf", 0), 0);
2672
2673 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2674 hv_store_ent (PL_custom_op_descs, slf,
2675 newSVpv ("coro schedule like function", 0), 0);
2676 }
2677
1402 coroapi.ver = CORO_API_VERSION; 2678 coroapi.ver = CORO_API_VERSION;
2679 coroapi.rev = CORO_API_REVISION;
2680
1403 coroapi.transfer = api_transfer; 2681 coroapi.transfer = api_transfer;
2682
2683 coroapi.sv_state = SvSTATE_;
2684 coroapi.execute_slf = api_execute_slf;
2685 coroapi.prepare_nop = prepare_nop;
2686 coroapi.prepare_schedule = prepare_schedule;
2687 coroapi.prepare_cede = prepare_cede;
2688 coroapi.prepare_cede_notself = prepare_cede_notself;
2689
2690 {
2691 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2692
2693 if (!svp) croak ("Time::HiRes is required");
2694 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2695
2696 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2697 }
1404 2698
1405 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2699 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1406} 2700}
1407 2701
1408SV * 2702SV *
1409new (char *klass, ...) 2703new (char *klass, ...)
2704 ALIAS:
2705 Coro::new = 1
1410 CODE: 2706 CODE:
1411{ 2707{
1412 struct coro *coro; 2708 struct coro *coro;
2709 MAGIC *mg;
1413 HV *hv; 2710 HV *hv;
2711 CV *cb;
1414 int i; 2712 int i;
2713
2714 if (items > 1)
2715 {
2716 cb = coro_sv_2cv (aTHX_ ST (1));
2717
2718 if (!ix)
2719 {
2720 if (CvISXSUB (cb))
2721 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2722
2723 if (!CvROOT (cb))
2724 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2725 }
2726 }
1415 2727
1416 Newz (0, coro, 1, struct coro); 2728 Newz (0, coro, 1, struct coro);
1417 coro->args = newAV (); 2729 coro->args = newAV ();
1418 coro->flags = CF_NEW; 2730 coro->flags = CF_NEW;
1419 2731
1420 if (coro_first) coro_first->prev = coro; 2732 if (coro_first) coro_first->prev = coro;
1421 coro->next = coro_first; 2733 coro->next = coro_first;
1422 coro_first = coro; 2734 coro_first = coro;
1423 2735
1424 coro->hv = hv = newHV (); 2736 coro->hv = hv = newHV ();
1425 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2737 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2738 mg->mg_flags |= MGf_DUP;
1426 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2739 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1427 2740
2741 if (items > 1)
2742 {
2743 av_extend (coro->args, items - 1 + ix - 1);
2744
2745 if (ix)
2746 {
2747 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2748 cb = cv_coro_run;
2749 }
2750
2751 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2752
1428 for (i = 1; i < items; i++) 2753 for (i = 2; i < items; i++)
1429 av_push (coro->args, newSVsv (ST (i))); 2754 av_push (coro->args, newSVsv (ST (i)));
2755 }
1430} 2756}
1431 OUTPUT: 2757 OUTPUT:
1432 RETVAL 2758 RETVAL
1433 2759
1434# these not obviously related functions are all rolled into the same xs
1435# function to increase chances that they all will call transfer with the same
1436# stack offset
1437void 2760void
1438_set_stacklevel (...) 2761transfer (...)
1439 ALIAS: 2762 PROTOTYPE: $$
1440 Coro::State::transfer = 1 2763 CODE:
1441 Coro::schedule = 2 2764 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1442 Coro::cede = 3
1443 Coro::cede_notself = 4
1444 CODE:
1445{
1446 struct transfer_args ta;
1447
1448 switch (ix)
1449 {
1450 case 0:
1451 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1452 ta.next = 0;
1453 break;
1454
1455 case 1:
1456 if (items != 2)
1457 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1458
1459 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1460 break;
1461
1462 case 2:
1463 prepare_schedule (aTHX_ &ta);
1464 break;
1465
1466 case 3:
1467 prepare_cede (aTHX_ &ta);
1468 break;
1469
1470 case 4:
1471 if (!prepare_cede_notself (aTHX_ &ta))
1472 XSRETURN_EMPTY;
1473
1474 break;
1475 }
1476
1477 BARRIER;
1478 TRANSFER (ta);
1479
1480 if (GIMME_V != G_VOID && ta.next != ta.prev)
1481 XSRETURN_YES;
1482}
1483 2765
1484bool 2766bool
1485_destroy (SV *coro_sv) 2767_destroy (SV *coro_sv)
1486 CODE: 2768 CODE:
1487 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2769 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1488 OUTPUT: 2770 OUTPUT:
1489 RETVAL 2771 RETVAL
1490 2772
1491void 2773void
1492_exit (code) 2774_exit (int code)
1493 int code
1494 PROTOTYPE: $ 2775 PROTOTYPE: $
1495 CODE: 2776 CODE:
1496 _exit (code); 2777 _exit (code);
1497 2778
1498int 2779int
1499cctx_stacksize (int new_stacksize = 0) 2780cctx_stacksize (int new_stacksize = 0)
2781 PROTOTYPE: ;$
1500 CODE: 2782 CODE:
1501 RETVAL = coro_stacksize; 2783 RETVAL = cctx_stacksize;
1502 if (new_stacksize) 2784 if (new_stacksize)
2785 {
1503 coro_stacksize = new_stacksize; 2786 cctx_stacksize = new_stacksize;
2787 ++cctx_gen;
2788 }
1504 OUTPUT: 2789 OUTPUT:
1505 RETVAL 2790 RETVAL
1506 2791
1507int 2792int
2793cctx_max_idle (int max_idle = 0)
2794 PROTOTYPE: ;$
2795 CODE:
2796 RETVAL = cctx_max_idle;
2797 if (max_idle > 1)
2798 cctx_max_idle = max_idle;
2799 OUTPUT:
2800 RETVAL
2801
2802int
1508cctx_count () 2803cctx_count ()
2804 PROTOTYPE:
1509 CODE: 2805 CODE:
1510 RETVAL = cctx_count; 2806 RETVAL = cctx_count;
1511 OUTPUT: 2807 OUTPUT:
1512 RETVAL 2808 RETVAL
1513 2809
1514int 2810int
1515cctx_idle () 2811cctx_idle ()
2812 PROTOTYPE:
1516 CODE: 2813 CODE:
1517 RETVAL = cctx_idle; 2814 RETVAL = cctx_idle;
1518 OUTPUT: 2815 OUTPUT:
1519 RETVAL 2816 RETVAL
1520 2817
1521void 2818void
1522list () 2819list ()
2820 PROTOTYPE:
1523 PPCODE: 2821 PPCODE:
1524{ 2822{
1525 struct coro *coro; 2823 struct coro *coro;
1526 for (coro = coro_first; coro; coro = coro->next) 2824 for (coro = coro_first; coro; coro = coro->next)
1527 if (coro->hv) 2825 if (coro->hv)
… …
1532call (Coro::State coro, SV *coderef) 2830call (Coro::State coro, SV *coderef)
1533 ALIAS: 2831 ALIAS:
1534 eval = 1 2832 eval = 1
1535 CODE: 2833 CODE:
1536{ 2834{
1537 if (coro->mainstack) 2835 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1538 { 2836 {
1539 struct coro temp; 2837 struct coro temp;
1540 Zero (&temp, 1, struct coro);
1541 2838
1542 if (!(coro->flags & CF_RUNNING)) 2839 if (!(coro->flags & CF_RUNNING))
1543 { 2840 {
2841 PUTBACK;
1544 save_perl (aTHX_ &temp); 2842 save_perl (aTHX_ &temp);
1545 load_perl (aTHX_ coro); 2843 load_perl (aTHX_ coro);
1546 } 2844 }
1547 2845
1548 { 2846 {
1549 dSP; 2847 dSP;
1550 ENTER; 2848 ENTER;
1551 SAVETMPS; 2849 SAVETMPS;
2850 PUTBACK;
2851 PUSHSTACK;
1552 PUSHMARK (SP); 2852 PUSHMARK (SP);
1553 PUTBACK; 2853
1554 if (ix) 2854 if (ix)
1555 eval_sv (coderef, 0); 2855 eval_sv (coderef, 0);
1556 else 2856 else
1557 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2857 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2858
2859 POPSTACK;
1558 SPAGAIN; 2860 SPAGAIN;
1559 FREETMPS; 2861 FREETMPS;
1560 LEAVE; 2862 LEAVE;
1561 PUTBACK; 2863 PUTBACK;
1562 } 2864 }
1563 2865
1564 if (!(coro->flags & CF_RUNNING)) 2866 if (!(coro->flags & CF_RUNNING))
1565 { 2867 {
1566 save_perl (aTHX_ coro); 2868 save_perl (aTHX_ coro);
1567 load_perl (aTHX_ &temp); 2869 load_perl (aTHX_ &temp);
2870 SPAGAIN;
1568 } 2871 }
1569 } 2872 }
1570} 2873}
1571 2874
1572SV * 2875SV *
… …
1581 RETVAL = boolSV (coro->flags & ix); 2884 RETVAL = boolSV (coro->flags & ix);
1582 OUTPUT: 2885 OUTPUT:
1583 RETVAL 2886 RETVAL
1584 2887
1585void 2888void
2889throw (Coro::State self, SV *throw = &PL_sv_undef)
2890 PROTOTYPE: $;$
2891 CODE:
2892{
2893 struct coro *current = SvSTATE_current;
2894 SV **throwp = self == current ? &CORO_THROW : &self->except;
2895 SvREFCNT_dec (*throwp);
2896 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2897}
2898
2899void
1586api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2900api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2901 PROTOTYPE: $;$
2902 C_ARGS: aTHX_ coro, flags
1587 2903
1588SV * 2904SV *
1589has_stack (Coro::State coro) 2905has_cctx (Coro::State coro)
1590 PROTOTYPE: $ 2906 PROTOTYPE: $
1591 CODE: 2907 CODE:
1592 RETVAL = boolSV (!!coro->cctx); 2908 RETVAL = boolSV (!!coro->cctx);
1593 OUTPUT: 2909 OUTPUT:
1594 RETVAL 2910 RETVAL
… …
1599 CODE: 2915 CODE:
1600 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2916 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1601 OUTPUT: 2917 OUTPUT:
1602 RETVAL 2918 RETVAL
1603 2919
1604IV 2920UV
1605rss (Coro::State coro) 2921rss (Coro::State coro)
1606 PROTOTYPE: $ 2922 PROTOTYPE: $
1607 ALIAS: 2923 ALIAS:
1608 usecount = 1 2924 usecount = 1
1609 CODE: 2925 CODE:
… …
1613 case 1: RETVAL = coro->usecount; break; 2929 case 1: RETVAL = coro->usecount; break;
1614 } 2930 }
1615 OUTPUT: 2931 OUTPUT:
1616 RETVAL 2932 RETVAL
1617 2933
2934void
2935force_cctx ()
2936 PROTOTYPE:
2937 CODE:
2938 SvSTATE_current->cctx->idle_sp = 0;
2939
2940void
2941swap_defsv (Coro::State self)
2942 PROTOTYPE: $
2943 ALIAS:
2944 swap_defav = 1
2945 CODE:
2946 if (!self->slot)
2947 croak ("cannot swap state with coroutine that has no saved state,");
2948 else
2949 {
2950 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2951 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2952
2953 SV *tmp = *src; *src = *dst; *dst = tmp;
2954 }
2955
1618 2956
1619MODULE = Coro::State PACKAGE = Coro 2957MODULE = Coro::State PACKAGE = Coro
1620 2958
1621BOOT: 2959BOOT:
1622{ 2960{
1623 int i; 2961 int i;
1624 2962
1625 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1626 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1627 av_async_pool = get_av ("Coro::async_pool", TRUE); 2963 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2964 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2965 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2966 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2967 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2968 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1628 2969
1629 coro_current = get_sv ("Coro::current", FALSE); 2970 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1630 SvREADONLY_on (coro_current); 2971 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2972 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2973 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1631 2974
1632 coro_stash = gv_stashpv ("Coro", TRUE); 2975 coro_stash = gv_stashpv ("Coro", TRUE);
1633 2976
1634 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2977 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1635 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2978 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1636 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2979 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1637 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2980 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1640 2983
1641 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2984 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1642 coro_ready[i] = newAV (); 2985 coro_ready[i] = newAV ();
1643 2986
1644 { 2987 {
1645 SV *sv = perl_get_sv("Coro::API", 1); 2988 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1646 2989
1647 coroapi.schedule = api_schedule; 2990 coroapi.schedule = api_schedule;
1648 coroapi.cede = api_cede; 2991 coroapi.cede = api_cede;
1649 coroapi.cede_notself = api_cede_notself; 2992 coroapi.cede_notself = api_cede_notself;
1650 coroapi.ready = api_ready; 2993 coroapi.ready = api_ready;
1651 coroapi.is_ready = api_is_ready; 2994 coroapi.is_ready = api_is_ready;
1652 coroapi.nready = &coro_nready; 2995 coroapi.nready = coro_nready;
1653 coroapi.current = coro_current; 2996 coroapi.current = coro_current;
1654 2997
1655 GCoroAPI = &coroapi; 2998 /*GCoroAPI = &coroapi;*/
1656 sv_setiv (sv, (IV)&coroapi); 2999 sv_setiv (sv, (IV)&coroapi);
1657 SvREADONLY_on (sv); 3000 SvREADONLY_on (sv);
1658 } 3001 }
1659} 3002}
3003
3004void
3005schedule (...)
3006 CODE:
3007 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3008
3009void
3010cede (...)
3011 CODE:
3012 CORO_EXECUTE_SLF_XS (slf_init_cede);
3013
3014void
3015cede_notself (...)
3016 CODE:
3017 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1660 3018
1661void 3019void
1662_set_current (SV *current) 3020_set_current (SV *current)
1663 PROTOTYPE: $ 3021 PROTOTYPE: $
1664 CODE: 3022 CODE:
1665 SvREFCNT_dec (SvRV (coro_current)); 3023 SvREFCNT_dec (SvRV (coro_current));
1666 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3024 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3025
3026void
3027_set_readyhook (SV *hook)
3028 PROTOTYPE: $
3029 CODE:
3030 SvREFCNT_dec (coro_readyhook);
3031 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1667 3032
1668int 3033int
1669prio (Coro::State coro, int newprio = 0) 3034prio (Coro::State coro, int newprio = 0)
3035 PROTOTYPE: $;$
1670 ALIAS: 3036 ALIAS:
1671 nice = 1 3037 nice = 1
1672 CODE: 3038 CODE:
1673{ 3039{
1674 RETVAL = coro->prio; 3040 RETVAL = coro->prio;
… …
1689 3055
1690SV * 3056SV *
1691ready (SV *self) 3057ready (SV *self)
1692 PROTOTYPE: $ 3058 PROTOTYPE: $
1693 CODE: 3059 CODE:
1694 RETVAL = boolSV (api_ready (self)); 3060 RETVAL = boolSV (api_ready (aTHX_ self));
1695 OUTPUT: 3061 OUTPUT:
1696 RETVAL 3062 RETVAL
1697 3063
1698int 3064int
1699nready (...) 3065nready (...)
… …
1701 CODE: 3067 CODE:
1702 RETVAL = coro_nready; 3068 RETVAL = coro_nready;
1703 OUTPUT: 3069 OUTPUT:
1704 RETVAL 3070 RETVAL
1705 3071
1706# for async_pool speedup
1707void 3072void
1708_pool_1 (SV *cb) 3073_pool_handler (...)
1709 CODE: 3074 CODE:
1710{ 3075 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1711 int i, len;
1712 HV *hv = (HV *)SvRV (coro_current);
1713 AV *defav = GvAV (PL_defgv);
1714 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1715 AV *invoke_av;
1716 3076
1717 if (!invoke) 3077void
1718 croak ("\3terminate\2\n"); 3078async_pool (SV *cv, ...)
3079 PROTOTYPE: &@
3080 PPCODE:
3081{
3082 HV *hv = (HV *)av_pop (av_async_pool);
3083 AV *av = newAV ();
3084 SV *cb = ST (0);
3085 int i;
1719 3086
1720 hv_store (hv, "desc", sizeof ("desc") - 1, 3087 av_extend (av, items - 2);
1721 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3088 for (i = 1; i < items; ++i)
3089 av_push (av, SvREFCNT_inc_NN (ST (i)));
1722 3090
1723 invoke_av = (AV *)SvRV (invoke); 3091 if ((SV *)hv == &PL_sv_undef)
1724 len = av_len (invoke_av);
1725
1726 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1727
1728 if (len > 0)
1729 { 3092 {
1730 av_fill (defav, len - 1); 3093 PUSHMARK (SP);
1731 for (i = 0; i < len; ++i) 3094 EXTEND (SP, 2);
1732 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3095 PUSHs (sv_Coro);
3096 PUSHs ((SV *)cv_pool_handler);
3097 PUTBACK;
3098 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3099 SPAGAIN;
3100
3101 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1733 } 3102 }
1734 3103
3104 {
3105 struct coro *coro = SvSTATE_hv (hv);
3106
3107 assert (!coro->invoke_cb);
3108 assert (!coro->invoke_av);
3109 coro->invoke_cb = SvREFCNT_inc (cb);
3110 coro->invoke_av = av;
3111 }
3112
3113 api_ready (aTHX_ (SV *)hv);
3114
3115 if (GIMME_V != G_VOID)
3116 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3117 else
1735 SvREFCNT_dec (invoke); 3118 SvREFCNT_dec (hv);
1736} 3119}
1737 3120
1738void 3121SV *
1739_pool_2 (SV *cb) 3122rouse_cb ()
3123 PROTOTYPE:
1740 CODE: 3124 CODE:
1741{ 3125 RETVAL = coro_new_rouse_cb (aTHX);
1742 struct coro *coro = SvSTATE (coro_current);
1743
1744 sv_setsv (cb, &PL_sv_undef);
1745
1746 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1747 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1748 croak ("\3terminate\2\n");
1749
1750 av_clear (GvAV (PL_defgv));
1751 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1752 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1753
1754 coro->prio = 0;
1755
1756 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1757 api_trace (coro_current, 0);
1758
1759 av_push (av_async_pool, newSVsv (coro_current));
1760}
1761
1762
1763MODULE = Coro::State PACKAGE = Coro::AIO
1764
1765SV *
1766_get_state ()
1767 CODE:
1768{
1769 struct io_state *data;
1770
1771 RETVAL = newSV (sizeof (struct io_state));
1772 data = (struct io_state *)SvPVX (RETVAL);
1773 SvCUR_set (RETVAL, sizeof (struct io_state));
1774 SvPOK_only (RETVAL);
1775
1776 data->errorno = errno;
1777 data->laststype = PL_laststype;
1778 data->laststatval = PL_laststatval;
1779 data->statcache = PL_statcache;
1780}
1781 OUTPUT: 3126 OUTPUT:
1782 RETVAL 3127 RETVAL
1783 3128
1784void 3129void
1785_set_state (char *data_) 3130rouse_wait (...)
1786 PROTOTYPE: $ 3131 PROTOTYPE: ;$
3132 PPCODE:
3133 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3134
3135
3136MODULE = Coro::State PACKAGE = PerlIO::cede
3137
3138BOOT:
3139 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3140
3141
3142MODULE = Coro::State PACKAGE = Coro::Semaphore
3143
3144SV *
3145new (SV *klass, SV *count = 0)
1787 CODE: 3146 CODE:
1788{ 3147 RETVAL = sv_bless (
1789 struct io_state *data = (void *)data_; 3148 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3149 GvSTASH (CvGV (cv))
3150 );
3151 OUTPUT:
3152 RETVAL
1790 3153
1791 errno = data->errorno; 3154# helper for Coro::Channel
1792 PL_laststype = data->laststype; 3155SV *
1793 PL_laststatval = data->laststatval; 3156_alloc (int count)
1794 PL_statcache = data->statcache; 3157 CODE:
1795} 3158 RETVAL = coro_waitarray_new (aTHX_ count);
3159 OUTPUT:
3160 RETVAL
1796 3161
3162SV *
3163count (SV *self)
3164 CODE:
3165 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3166 OUTPUT:
3167 RETVAL
3168
3169void
3170up (SV *self, int adjust = 1)
3171 ALIAS:
3172 adjust = 1
3173 CODE:
3174 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3175
3176void
3177down (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3180
3181void
3182wait (...)
3183 CODE:
3184 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3185
3186void
3187try (SV *self)
3188 PPCODE:
3189{
3190 AV *av = (AV *)SvRV (self);
3191 SV *count_sv = AvARRAY (av)[0];
3192 IV count = SvIVX (count_sv);
3193
3194 if (count > 0)
3195 {
3196 --count;
3197 SvIVX (count_sv) = count;
3198 XSRETURN_YES;
3199 }
3200 else
3201 XSRETURN_NO;
3202}
3203
3204void
3205waiters (SV *self)
3206 PPCODE:
3207{
3208 AV *av = (AV *)SvRV (self);
3209 int wcount = AvFILLp (av) + 1 - 1;
3210
3211 if (GIMME_V == G_SCALAR)
3212 XPUSHs (sv_2mortal (newSViv (wcount)));
3213 else
3214 {
3215 int i;
3216 EXTEND (SP, wcount);
3217 for (i = 1; i <= wcount; ++i)
3218 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3219 }
3220}
3221
3222MODULE = Coro::State PACKAGE = Coro::Signal
3223
3224SV *
3225new (SV *klass)
3226 CODE:
3227 RETVAL = sv_bless (
3228 coro_waitarray_new (aTHX_ 0),
3229 GvSTASH (CvGV (cv))
3230 );
3231 OUTPUT:
3232 RETVAL
3233
3234void
3235wait (...)
3236 CODE:
3237 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3238
3239void
3240broadcast (SV *self)
3241 CODE:
3242{
3243 AV *av = (AV *)SvRV (self);
3244 coro_signal_wake (aTHX_ av, AvFILLp (av));
3245}
3246
3247void
3248send (SV *self)
3249 CODE:
3250{
3251 AV *av = (AV *)SvRV (self);
3252
3253 if (AvFILLp (av))
3254 coro_signal_wake (aTHX_ av, 1);
3255 else
3256 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3257}
3258
3259IV
3260awaited (SV *self)
3261 CODE:
3262 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3263 OUTPUT:
3264 RETVAL
3265
3266
3267MODULE = Coro::State PACKAGE = Coro::AnyEvent
3268
3269BOOT:
3270 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3271
3272void
3273_schedule (...)
3274 CODE:
3275{
3276 static int incede;
3277
3278 api_cede_notself (aTHX);
3279
3280 ++incede;
3281 while (coro_nready >= incede && api_cede (aTHX))
3282 ;
3283
3284 sv_setsv (sv_activity, &PL_sv_undef);
3285 if (coro_nready >= incede)
3286 {
3287 PUSHMARK (SP);
3288 PUTBACK;
3289 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3290 }
3291
3292 --incede;
3293}
3294
3295
3296MODULE = Coro::State PACKAGE = Coro::AIO
3297
3298void
3299_register (char *target, char *proto, SV *req)
3300 CODE:
3301{
3302 CV *req_cv = coro_sv_2cv (aTHX_ req);
3303 /* newXSproto doesn't return the CV on 5.8 */
3304 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3305 sv_setpv ((SV *)slf_cv, proto);
3306 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3307}
3308

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