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Comparing Coro/Coro/State.xs (file contents):
Revision 1.189 by root, Fri Oct 5 20:38:43 2007 UTC vs.
Revision 1.312 by root, Thu Nov 20 03:10:30 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
75/* 5.8.7 */ 104/* 5.8.7 */
76#ifndef SvRV_set 105#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 107#endif
79 108
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 120#endif
92 121
93/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
94 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
95#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
97 131
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 133
100#if __GNUC__ >= 3 134#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
103#else 138#else
104# define attribute(x) 139# define attribute(x)
105# define BARRIER 140# define expect(expr,value) (expr)
141# define INLINE static
106#endif 142#endif
107 143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
108#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
109 148
110#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
111 151
112#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 153# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 155# endif
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 156#endif
120 157
121/* helper storage struct for Coro::AIO */ 158static 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};
129 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 168static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
136 171
137static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
138static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
139 177
140/* async_pool helper stuff */ 178/* async_pool helper stuff */
141static SV *sv_pool_rss; 179static SV *sv_pool_rss;
142static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
143static AV *av_async_pool; 182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
186
187/* Coro::AnyEvent */
188static SV *sv_activity;
144 189
145static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
146static int cctx_count, cctx_idle; 191static int cctx_count, cctx_idle;
147 192
148enum { 193enum {
… …
153 CC_TRACE_LINE = 0x10, /* trace each statement */ 198 CC_TRACE_LINE = 0x10, /* trace each statement */
154 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
155}; 200};
156 201
157/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
158typedef struct coro_cctx { 203typedef struct coro_cctx
204{
159 struct coro_cctx *next; 205 struct coro_cctx *next;
160 206
161 /* the stack */ 207 /* the stack */
162 void *sptr; 208 void *sptr;
163 size_t ssize; 209 size_t ssize;
… …
166 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 212 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
167 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 213 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
168 JMPENV *top_env; 214 JMPENV *top_env;
169 coro_context cctx; 215 coro_context cctx;
170 216
217 U32 gen;
171#if CORO_USE_VALGRIND 218#if CORO_USE_VALGRIND
172 int valgrind_id; 219 int valgrind_id;
173#endif 220#endif
174 unsigned char flags; 221 unsigned char flags;
175} coro_cctx; 222} coro_cctx;
… …
179 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
180 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
181 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
182}; 229};
183 230
184/* this is a structure representing a perl-level coroutine */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
185struct coro { 232typedef struct
186 /* the c coroutine allocated to this perl coroutine, if any */ 233{
187 coro_cctx *cctx; 234 SV *defsv;
188 235 AV *defav;
189 /* data associated with this coroutine (initial args) */ 236 SV *errsv;
190 AV *args; 237 SV *irsgv;
191 int refcnt;
192 int flags; /* CF_ flags */
193
194 /* optionally saved, might be zero */
195 AV *defav; /* @_ */
196 SV *defsv; /* $_ */
197 SV *errsv; /* $@ */
198 SV *deffh; /* default filehandle */
199 SV *irssv; /* $/ */
200 SV *irssv_sv; /* real $/ cache */
201
202#define VAR(name,type) type name; 238#define VAR(name,type) type name;
203# include "state.h" 239# include "state.h"
204#undef VAR 240#undef VAR
241} perl_slots;
242
243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
244
245/* this is a structure representing a perl-level coroutine */
246struct coro {
247 /* the C coroutine allocated to this perl coroutine, if any */
248 coro_cctx *cctx;
249
250 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */
252 AV *mainstack;
253 perl_slots *slot; /* basically the saved sp */
254
255 CV *startcv; /* the CV to execute */
256 AV *args; /* data associated with this coroutine (initial args) */
257 int refcnt; /* coroutines are refcounted, yes */
258 int flags; /* CF_ flags */
259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
205 261
206 /* statistics */ 262 /* statistics */
207 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
208 264
209 /* coro process data */ 265 /* coro process data */
210 int prio; 266 int prio;
211 //SV *throw; 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
212 269
213 /* async_pool */ 270 /* async_pool */
214 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
215 274
216 /* linked list */ 275 /* linked list */
217 struct coro *next, *prev; 276 struct coro *next, *prev;
218 HV *hv; /* the perl hash associated with this coro, if any */
219}; 277};
220 278
221typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
222typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */
223 286
224/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
225 288
226#define PRIO_MAX 3 289#define PRIO_MAX 3
227#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
230#define PRIO_IDLE -3 293#define PRIO_IDLE -3
231#define PRIO_MIN -4 294#define PRIO_MIN -4
232 295
233/* for Coro.pm */ 296/* for Coro.pm */
234static SV *coro_current; 297static SV *coro_current;
298static SV *coro_readyhook;
235static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
236static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
237static struct coro *coro_first; 301static struct coro *coro_first;
302#define coro_nready coroapi.nready
238 303
239/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
305
306static SV *
307coro_get_sv (pTHX_ const char *name, int create)
308{
309#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create);
312#endif
313 return get_sv (name, create);
314}
315
316static AV *
317coro_get_av (pTHX_ const char *name, int create)
318{
319#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create);
322#endif
323 return get_av (name, create);
324}
325
326static HV *
327coro_get_hv (pTHX_ const char *name, int create)
328{
329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create);
332#endif
333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
343}
240 344
241static AV * 345static AV *
242coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
243{ 347{
244 AV *padlist = CvPADLIST (cv); 348 AV *padlist = CvPADLIST (cv);
245 AV *newpadlist, *newpad; 349 AV *newpadlist, *newpad;
246 350
247 newpadlist = newAV (); 351 newpadlist = newAV ();
248 AvREAL_off (newpadlist); 352 AvREAL_off (newpadlist);
249#if PERL_VERSION_ATLEAST (5,9,0) 353#if PERL_VERSION_ATLEAST (5,10,0)
250 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 354 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
251#else 355#else
252 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 356 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
253#endif 357#endif
254 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 358 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
255 --AvFILLp (padlist); 359 --AvFILLp (padlist);
256 360
257 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 361 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
258 av_store (newpadlist, 1, (SV *)newpad); 362 av_store (newpadlist, 1, (SV *)newpad);
259 363
260 return newpadlist; 364 return newpadlist;
261} 365}
262 366
… …
292 396
293 /* casting is fun. */ 397 /* casting is fun. */
294 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 398 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
295 free_padlist (aTHX_ padlist); 399 free_padlist (aTHX_ padlist);
296 400
297 SvREFCNT_dec (av); 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
298 402
299 return 0; 403 return 0;
300} 404}
301 405
406#define CORO_MAGIC_type_cv 26
302#define PERL_MAGIC_coro PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
303 408
304static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 409static MGVTBL coro_cv_vtbl = {
410 0, 0, 0, 0,
411 coro_cv_free
412};
305 413
306#define CORO_MAGIC(cv) \ 414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
307 SvMAGIC (cv) \ 416 ? SvMAGIC (sv) \
308 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 417 : mg_find (sv, type))
309 ? SvMAGIC (cv) \ 418
310 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 419#define CORO_MAGIC(sv, type) \
420 (expect_true (SvMAGIC (sv)) \
421 ? CORO_MAGIC_NN (sv, type) \
311 : 0 422 : 0)
312 423
313static struct coro * 424#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
426
427INLINE struct coro *
314SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
315{ 429{
316 HV *stash; 430 HV *stash;
317 MAGIC *mg; 431 MAGIC *mg;
318 432
319 if (SvROK (coro)) 433 if (SvROK (coro))
320 coro = SvRV (coro); 434 coro = SvRV (coro);
321 435
322 if (SvTYPE (coro) != SVt_PVHV) 436 if (expect_false (SvTYPE (coro) != SVt_PVHV))
323 croak ("Coro::State object required"); 437 croak ("Coro::State object required");
324 438
325 stash = SvSTASH (coro); 439 stash = SvSTASH (coro);
326 if (stash != coro_stash && stash != coro_state_stash) 440 if (expect_false (stash != coro_stash && stash != coro_state_stash))
327 { 441 {
328 /* very slow, but rare, check */ 442 /* very slow, but rare, check */
329 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 443 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
330 croak ("Coro::State object required"); 444 croak ("Coro::State object required");
331 } 445 }
332 446
333 mg = CORO_MAGIC (coro); 447 mg = CORO_MAGIC_state (coro);
334 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
335} 449}
336 450
337#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
338 452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
456
339/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
340static void 458static void
341get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
342{ 460{
343 MAGIC *mg = CORO_MAGIC (cv); 461 MAGIC *mg = CORO_MAGIC_cv (cv);
344 AV *av; 462 AV *av;
345 463
346 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 464 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
347 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 465 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
348 else 466 else
349 { 467 {
350#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
351 /* this is probably cleaner, but also slower? */ 469 /* this is probably cleaner? but also slower! */
470 /* in practise, it seems to be less stable */
352 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
353 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
354 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
355 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
356#else 475#else
357 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
360} 479}
361 480
362static void 481static void
363put_padlist (pTHX_ CV *cv) 482put_padlist (pTHX_ CV *cv)
364{ 483{
365 MAGIC *mg = CORO_MAGIC (cv); 484 MAGIC *mg = CORO_MAGIC_cv (cv);
366 AV *av; 485 AV *av;
367 486
368 if (!mg) 487 if (expect_false (!mg))
369 { 488 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
370 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
371 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
372 mg->mg_virtual = &vtbl_coro;
373 mg->mg_obj = (SV *)newAV ();
374 }
375 489
376 av = (AV *)mg->mg_obj; 490 av = (AV *)mg->mg_obj;
377 491
378 if (AvFILLp (av) >= AvMAX (av)) 492 if (expect_false (AvFILLp (av) >= AvMAX (av)))
379 av_extend (av, AvMAX (av) + 1); 493 av_extend (av, AvMAX (av) + 1);
380 494
381 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 495 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
382} 496}
383 497
384/** load & save, init *******************************************************/ 498/** load & save, init *******************************************************/
385 499
386static void 500static void
387load_perl (pTHX_ Coro__State c) 501load_perl (pTHX_ Coro__State c)
388{ 502{
503 perl_slots *slot = c->slot;
504 c->slot = 0;
505
506 PL_mainstack = c->mainstack;
507
508 GvSV (PL_defgv) = slot->defsv;
509 GvAV (PL_defgv) = slot->defav;
510 GvSV (PL_errgv) = slot->errsv;
511 GvSV (irsgv) = slot->irsgv;
512
389#define VAR(name,type) PL_ ## name = c->name; 513 #define VAR(name,type) PL_ ## name = slot->name;
390# include "state.h" 514 # include "state.h"
391#undef VAR 515 #undef VAR
392
393 GvSV (PL_defgv) = c->defsv;
394 GvAV (PL_defgv) = c->defav;
395 GvSV (PL_errgv) = c->errsv;
396 GvSV (irsgv) = c->irssv_sv;
397 516
398 { 517 {
399 dSP; 518 dSP;
519
400 CV *cv; 520 CV *cv;
401 521
402 /* now do the ugly restore mess */ 522 /* now do the ugly restore mess */
403 while ((cv = (CV *)POPs)) 523 while (expect_true (cv = (CV *)POPs))
404 { 524 {
405 put_padlist (aTHX_ cv); /* mark this padlist as available */ 525 put_padlist (aTHX_ cv); /* mark this padlist as available */
406 CvDEPTH (cv) = PTR2IV (POPs); 526 CvDEPTH (cv) = PTR2IV (POPs);
407 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
408 } 528 }
409 529
410 PUTBACK; 530 PUTBACK;
411 } 531 }
532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
412} 535}
413 536
414static void 537static void
415save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
416{ 539{
540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
417 { 543 {
418 dSP; 544 dSP;
419 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
420 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
421 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
427 553
428 XPUSHs (Nullsv); 554 XPUSHs (Nullsv);
429 /* this loop was inspired by pp_caller */ 555 /* this loop was inspired by pp_caller */
430 for (;;) 556 for (;;)
431 { 557 {
432 while (cxix >= 0) 558 while (expect_true (cxix >= 0))
433 { 559 {
434 PERL_CONTEXT *cx = &ccstk[cxix--]; 560 PERL_CONTEXT *cx = &ccstk[cxix--];
435 561
436 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 562 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
437 { 563 {
438 CV *cv = cx->blk_sub.cv; 564 CV *cv = cx->blk_sub.cv;
439 565
440 if (CvDEPTH (cv)) 566 if (expect_true (CvDEPTH (cv)))
441 { 567 {
442 EXTEND (SP, 3); 568 EXTEND (SP, 3);
443 PUSHs ((SV *)CvPADLIST (cv)); 569 PUSHs ((SV *)CvPADLIST (cv));
444 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 570 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
445 PUSHs ((SV *)cv); 571 PUSHs ((SV *)cv);
446 572
447 CvDEPTH (cv) = 0; 573 CvDEPTH (cv) = 0;
448 get_padlist (aTHX_ cv); 574 get_padlist (aTHX_ cv);
449 } 575 }
450 } 576 }
451 } 577 }
452 578
453 if (top_si->si_type == PERLSI_MAIN) 579 if (expect_true (top_si->si_type == PERLSI_MAIN))
454 break; 580 break;
455 581
456 top_si = top_si->si_prev; 582 top_si = top_si->si_prev;
457 ccstk = top_si->si_cxstack; 583 ccstk = top_si->si_cxstack;
458 cxix = top_si->si_cxix; 584 cxix = top_si->si_cxix;
459 } 585 }
460 586
461 PUTBACK; 587 PUTBACK;
462 } 588 }
463 589
590 /* allocate some space on the context stack for our purposes */
591 /* we manually unroll here, as usually 2 slots is enough */
592 if (SLOT_COUNT >= 1) CXINC;
593 if (SLOT_COUNT >= 2) CXINC;
594 if (SLOT_COUNT >= 3) CXINC;
595 {
596 int i;
597 for (i = 3; i < SLOT_COUNT; ++i)
598 CXINC;
599 }
600 cxstack_ix -= SLOT_COUNT; /* undo allocation */
601
602 c->mainstack = PL_mainstack;
603
604 {
605 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
606
464 c->defav = GvAV (PL_defgv); 607 slot->defav = GvAV (PL_defgv);
465 c->defsv = DEFSV; 608 slot->defsv = DEFSV;
466 c->errsv = ERRSV; 609 slot->errsv = ERRSV;
467 c->irssv_sv = GvSV (irsgv); 610 slot->irsgv = GvSV (irsgv);
468 611
469#define VAR(name,type)c->name = PL_ ## name; 612 #define VAR(name,type) slot->name = PL_ ## name;
470# include "state.h" 613 # include "state.h"
471#undef VAR 614 #undef VAR
615 }
472} 616}
473 617
474/* 618/*
475 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
476 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
477 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
478 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
479 */ 623 */
480#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
481# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
482#else 626#else
483static void 627static void
484coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
485{ 629{
486 PL_curstackinfo = new_stackinfo(64, 6); 630 PL_curstackinfo = new_stackinfo(32, 8);
487 PL_curstackinfo->si_type = PERLSI_MAIN; 631 PL_curstackinfo->si_type = PERLSI_MAIN;
488 PL_curstack = PL_curstackinfo->si_stack; 632 PL_curstack = PL_curstackinfo->si_stack;
489 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 633 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
490 634
491 PL_stack_base = AvARRAY(PL_curstack); 635 PL_stack_base = AvARRAY(PL_curstack);
492 PL_stack_sp = PL_stack_base; 636 PL_stack_sp = PL_stack_base;
493 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 637 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
494 638
495 New(50,PL_tmps_stack,64,SV*); 639 New(50,PL_tmps_stack,32,SV*);
496 PL_tmps_floor = -1; 640 PL_tmps_floor = -1;
497 PL_tmps_ix = -1; 641 PL_tmps_ix = -1;
498 PL_tmps_max = 64; 642 PL_tmps_max = 32;
499 643
500 New(54,PL_markstack,16,I32); 644 New(54,PL_markstack,16,I32);
501 PL_markstack_ptr = PL_markstack; 645 PL_markstack_ptr = PL_markstack;
502 PL_markstack_max = PL_markstack + 16; 646 PL_markstack_max = PL_markstack + 16;
503 647
504#ifdef SET_MARK_OFFSET 648#ifdef SET_MARK_OFFSET
505 SET_MARK_OFFSET; 649 SET_MARK_OFFSET;
506#endif 650#endif
507 651
508 New(54,PL_scopestack,16,I32); 652 New(54,PL_scopestack,8,I32);
509 PL_scopestack_ix = 0; 653 PL_scopestack_ix = 0;
510 PL_scopestack_max = 16; 654 PL_scopestack_max = 8;
511 655
512 New(54,PL_savestack,64,ANY); 656 New(54,PL_savestack,24,ANY);
513 PL_savestack_ix = 0; 657 PL_savestack_ix = 0;
514 PL_savestack_max = 64; 658 PL_savestack_max = 24;
515 659
516#if !PERL_VERSION_ATLEAST (5,9,0) 660#if !PERL_VERSION_ATLEAST (5,10,0)
517 New(54,PL_retstack,4,OP*); 661 New(54,PL_retstack,4,OP*);
518 PL_retstack_ix = 0; 662 PL_retstack_ix = 0;
519 PL_retstack_max = 4; 663 PL_retstack_max = 4;
520#endif 664#endif
521} 665}
… …
523 667
524/* 668/*
525 * destroy the stacks, the callchain etc... 669 * destroy the stacks, the callchain etc...
526 */ 670 */
527static void 671static void
528coro_destroy_stacks (pTHX) 672coro_destruct_stacks (pTHX)
529{ 673{
530 while (PL_curstackinfo->si_next) 674 while (PL_curstackinfo->si_next)
531 PL_curstackinfo = PL_curstackinfo->si_next; 675 PL_curstackinfo = PL_curstackinfo->si_next;
532 676
533 while (PL_curstackinfo) 677 while (PL_curstackinfo)
… …
544 688
545 Safefree (PL_tmps_stack); 689 Safefree (PL_tmps_stack);
546 Safefree (PL_markstack); 690 Safefree (PL_markstack);
547 Safefree (PL_scopestack); 691 Safefree (PL_scopestack);
548 Safefree (PL_savestack); 692 Safefree (PL_savestack);
549#if !PERL_VERSION_ATLEAST (5,9,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
550 Safefree (PL_retstack); 694 Safefree (PL_retstack);
551#endif 695#endif
552} 696}
553 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
554static size_t 707static size_t
555coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
556{ 709{
557 size_t rss = sizeof (*coro); 710 size_t rss = sizeof (*coro);
558 711
559 if (coro->mainstack) 712 if (coro->mainstack)
560 { 713 {
561 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
562 { 715 {
563 #define VAR(name,type)coro->name = PL_ ## name; 716 #define SYM(sym) PL_ ## sym
564 # include "state.h" 717 CORO_RSS;
565 #undef VAR 718 #undef SYM
566 } 719 }
720 else
721 {
722 #define SYM(sym) coro->slot->sym
723 CORO_RSS;
724 #undef SYM
725 }
726 }
567 727
568 rss += sizeof (coro->curstackinfo); 728 return rss;
569 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 729}
570 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
571 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
572 rss += coro->tmps_max * sizeof (SV *);
573 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
574 rss += coro->scopestack_max * sizeof (I32);
575 rss += coro->savestack_max * sizeof (ANY);
576 730
577#if !PERL_VERSION_ATLEAST (5,9,0) 731/** coroutine stack handling ************************************************/
578 rss += coro->retstack_max * sizeof (OP *); 732
733static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
734static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
735static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
736
737/* apparently < 5.8.8 */
738#ifndef MgPV_nolen_const
739#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
740 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
741 (const char*)(mg)->mg_ptr)
579#endif 742#endif
743
744/*
745 * This overrides the default magic get method of %SIG elements.
746 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
747 * and instead of tryign to save and restore the hash elements, we just provide
748 * readback here.
749 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
750 * not expecting this to actually change the hook. This is a potential problem
751 * when a schedule happens then, but we ignore this.
752 */
753static int
754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{
756 const char *s = MgPV_nolen_const (mg);
757
758 if (*s == '_')
580 } 759 {
760 SV **svp = 0;
581 761
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp)
766 {
767 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
768 return 0;
769 }
770 }
771
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
773}
774
775static int
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{
778 const char *s = MgPV_nolen_const (mg);
779
780 if (*s == '_')
781 {
782 SV **svp = 0;
783
784 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
785 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
786
787 if (svp)
788 {
789 SV *old = *svp;
790 *svp = 0;
791 SvREFCNT_dec (old);
792 return 0;
793 }
794 }
795
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797}
798
799static int
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{
802 const char *s = MgPV_nolen_const (mg);
803
804 if (*s == '_')
805 {
806 SV **svp = 0;
807
808 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810
811 if (svp)
812 {
813 SV *old = *svp;
814 *svp = newSVsv (sv);
815 SvREFCNT_dec (old);
816 return 0;
817 }
818 }
819
820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
821}
822
823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
582 return rss; 833 return 0;
583} 834}
584 835
585/** coroutine stack handling ************************************************/ 836static UNOP coro_setup_op;
586 837
587static void 838static void NOINLINE /* noinline to keep it out of the transfer fast path */
588coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
589{ 840{
590 /* 841 /*
591 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
592 */ 843 */
… …
595 PL_runops = RUNOPS_DEFAULT; 846 PL_runops = RUNOPS_DEFAULT;
596 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
597 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
598 PL_comppad = 0; 849 PL_comppad = 0;
599 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
600 PL_localizing = 0; 852 PL_localizing = 0;
601 PL_dirty = 0; 853 PL_dirty = 0;
602 PL_restartop = 0; 854 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0;
857#endif
858
859 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
603 862
604 GvSV (PL_defgv) = NEWSV (0, 0); 863 GvSV (PL_defgv) = newSV (0);
605 GvAV (PL_defgv) = coro->args; coro->args = 0; 864 GvAV (PL_defgv) = coro->args; coro->args = 0;
606 GvSV (PL_errgv) = NEWSV (0, 0); 865 GvSV (PL_errgv) = newSV (0);
607 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
608 PL_rs = newSVsv (GvSV (irsgv)); 867 PL_rs = newSVsv (GvSV (irsgv));
609 PL_defoutgv = SvREFCNT_inc (stdoutgv); 868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
610 869
611 { 870 {
612 dSP; 871 dSP;
613 LOGOP myop; 872 UNOP myop;
614 873
615 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
616 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
617 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
618 878
619 PUSHMARK (SP); 879 PUSHMARK (SP);
620 XPUSHs (av_shift (GvAV (PL_defgv))); 880 PUSHs ((SV *)coro->startcv);
621 PUTBACK; 881 PUTBACK;
622 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
623 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
624 SPAGAIN;
625 } 884 }
626 885
627 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
628} 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 */
889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
629 891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
902}
903
630static void 904static void
631coro_destroy (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
632{ 906{
633 if (!IN_DESTRUCT) 907 if (!IN_DESTRUCT)
634 { 908 {
635 /* restore all saved variables and stuff */ 909 /* restore all saved variables and stuff */
636 LEAVE_SCOPE (0); 910 LEAVE_SCOPE (0);
… …
652 SvREFCNT_dec (GvSV (PL_errgv)); 926 SvREFCNT_dec (GvSV (PL_errgv));
653 SvREFCNT_dec (PL_defoutgv); 927 SvREFCNT_dec (PL_defoutgv);
654 SvREFCNT_dec (PL_rs); 928 SvREFCNT_dec (PL_rs);
655 SvREFCNT_dec (GvSV (irsgv)); 929 SvREFCNT_dec (GvSV (irsgv));
656 930
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933
657 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
658 //SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
659 938
660 coro_destroy_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
661} 940}
662 941
663static void 942INLINE void
664free_coro_mortal (pTHX) 943free_coro_mortal (pTHX)
665{ 944{
666 if (coro_mortal) 945 if (expect_true (coro_mortal))
667 { 946 {
668 SvREFCNT_dec (coro_mortal); 947 SvREFCNT_dec (coro_mortal);
669 coro_mortal = 0; 948 coro_mortal = 0;
670 } 949 }
671} 950}
… …
673static int 952static int
674runops_trace (pTHX) 953runops_trace (pTHX)
675{ 954{
676 COP *oldcop = 0; 955 COP *oldcop = 0;
677 int oldcxix = -2; 956 int oldcxix = -2;
678 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
679 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
680 959
681 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
682 { 961 {
683 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
700 bot = PL_stack_base + cx->blk_oldsp + 1; 979 bot = PL_stack_base + cx->blk_oldsp + 1;
701 top = cx->blk_gimme == G_ARRAY ? SP + 1 980 top = cx->blk_gimme == G_ARRAY ? SP + 1
702 : cx->blk_gimme == G_SCALAR ? bot + 1 981 : cx->blk_gimme == G_SCALAR ? bot + 1
703 : bot; 982 : bot;
704 983
984 av_extend (av, top - bot);
705 while (bot < top) 985 while (bot < top)
706 av_push (av, SvREFCNT_inc (*bot++)); 986 av_push (av, SvREFCNT_inc_NN (*bot++));
707 987
708 PL_runops = RUNOPS_DEFAULT; 988 PL_runops = RUNOPS_DEFAULT;
709 ENTER; 989 ENTER;
710 SAVETMPS; 990 SAVETMPS;
711 EXTEND (SP, 3); 991 EXTEND (SP, 3);
… …
749 SAVETMPS; 1029 SAVETMPS;
750 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
751 PUSHMARK (SP); 1031 PUSHMARK (SP);
752 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
753 PUSHs (fullname); 1033 PUSHs (fullname);
754 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
755 PUTBACK; 1035 PUTBACK;
756 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
757 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
758 SPAGAIN; 1038 SPAGAIN;
759 FREETMPS; 1039 FREETMPS;
… …
791 1071
792 TAINT_NOT; 1072 TAINT_NOT;
793 return 0; 1073 return 0;
794} 1074}
795 1075
796/* inject a fake call to Coro::State::_cctx_init into the execution */ 1076static struct coro_cctx *cctx_ssl_cctx;
797/* _cctx_init should be careful, as it could be called at almost any time */ 1077static struct CoroSLF cctx_ssl_frame;
798/* during execution of a perl program */ 1078
1079static void
1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1081{
1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1083 ta->next = 0;
1084}
1085
1086static int
1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1088{
1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
799static void NOINLINE 1095static void NOINLINE
800prepare_cctx (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
801{ 1097{
802 dSP;
803 LOGOP myop;
804
805 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
806 1099
807 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
808 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
809 1102
810 Zero (&myop, 1, LOGOP); 1103 /* we already must be executing an SLF op, there is no other valid way
811 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
812 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
813 1107
814 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
815 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
816 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1110 cctx_ssl_frame = slf_frame;
817 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
818 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
819 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
820 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1114}
821 SPAGAIN; 1115
1116/* the tail of transfer: execute stuff we can only do after a transfer */
1117INLINE void
1118transfer_tail (pTHX)
1119{
1120 free_coro_mortal (aTHX);
822} 1121}
823 1122
824/* 1123/*
825 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
826 */ 1125 */
827static void 1126static void
828coro_run (void *arg) 1127cctx_run (void *arg)
829{ 1128{
1129#ifdef USE_ITHREADS
1130# if CORO_PTHREAD
1131 PERL_SET_CONTEXT (coro_thx);
1132# endif
1133#endif
1134 {
830 dTHX; 1135 dTHX;
831 1136
832 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1137 /* normally we would need to skip the entersub here */
833 UNLOCK; 1138 /* not doing so will re-execute it, which is exactly what we want */
834
835 /* we now skip the entersub that lead to transfer() */
836 PL_op = PL_op->op_next; 1139 /* PL_nop = PL_nop->op_next */
837 1140
838 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
839 prepare_cctx (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
840 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
841 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
842 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
843 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
844
845 /* 1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
1154
1155 /*
846 * If perl-run returns we assume exit() was being called or the coro 1156 * If perl-run returns we assume exit() was being called or the coro
847 * fell off the end, which seems to be the only valid (non-bug) 1157 * fell off the end, which seems to be the only valid (non-bug)
848 * reason for perl_run to return. We try to exit by jumping to the 1158 * reason for perl_run to return. We try to exit by jumping to the
849 * bootstrap-time "top" top_env, as we cannot restore the "main" 1159 * bootstrap-time "top" top_env, as we cannot restore the "main"
850 * coroutine as Coro has no such concept 1160 * coroutine as Coro has no such concept
851 */ 1161 */
852 PL_top_env = main_top_env; 1162 PL_top_env = main_top_env;
853 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1163 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1164 }
854} 1165}
855 1166
856static coro_cctx * 1167static coro_cctx *
857cctx_new () 1168cctx_new ()
858{ 1169{
859 coro_cctx *cctx; 1170 coro_cctx *cctx;
1171
1172 ++cctx_count;
1173 New (0, cctx, 1, coro_cctx);
1174
1175 cctx->gen = cctx_gen;
1176 cctx->flags = 0;
1177 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1178
1179 return cctx;
1180}
1181
1182/* create a new cctx only suitable as source */
1183static coro_cctx *
1184cctx_new_empty ()
1185{
1186 coro_cctx *cctx = cctx_new ();
1187
1188 cctx->sptr = 0;
1189 coro_create (&cctx->cctx, 0, 0, 0, 0);
1190
1191 return cctx;
1192}
1193
1194/* create a new cctx suitable as destination/running a perl interpreter */
1195static coro_cctx *
1196cctx_new_run ()
1197{
1198 coro_cctx *cctx = cctx_new ();
860 void *stack_start; 1199 void *stack_start;
861 size_t stack_size; 1200 size_t stack_size;
862 1201
863 ++cctx_count;
864
865 Newz (0, cctx, 1, coro_cctx);
866
867#if HAVE_MMAP 1202#if HAVE_MMAP
868
869 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1203 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
870 /* mmap supposedly does allocate-on-write for us */ 1204 /* mmap supposedly does allocate-on-write for us */
871 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1205 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
872 1206
873 if (cctx->sptr != (void *)-1) 1207 if (cctx->sptr != (void *)-1)
874 { 1208 {
875# if CORO_STACKGUARD 1209 #if CORO_STACKGUARD
876 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
877# endif 1211 #endif
878 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
879 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
880 cctx->flags |= CC_MAPPED; 1214 cctx->flags |= CC_MAPPED;
881 } 1215 }
882 else 1216 else
883#endif 1217#endif
884 { 1218 {
885 cctx->ssize = coro_stacksize * (long)sizeof (long); 1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
886 New (0, cctx->sptr, coro_stacksize, long); 1220 New (0, cctx->sptr, cctx_stacksize, long);
887 1221
888 if (!cctx->sptr) 1222 if (!cctx->sptr)
889 { 1223 {
890 perror ("FATAL: unable to allocate stack for coroutine"); 1224 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
891 _exit (EXIT_FAILURE); 1225 _exit (EXIT_FAILURE);
892 } 1226 }
893 1227
894 stack_start = cctx->sptr; 1228 stack_start = cctx->sptr;
895 stack_size = cctx->ssize; 1229 stack_size = cctx->ssize;
896 } 1230 }
897 1231
898 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1232 #if CORO_USE_VALGRIND
1233 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1234 #endif
1235
899 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1236 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
900 1237
901 return cctx; 1238 return cctx;
902} 1239}
903 1240
904static void 1241static void
… …
906{ 1243{
907 if (!cctx) 1244 if (!cctx)
908 return; 1245 return;
909 1246
910 --cctx_count; 1247 --cctx_count;
1248 coro_destroy (&cctx->cctx);
911 1249
1250 /* coro_transfer creates new, empty cctx's */
1251 if (cctx->sptr)
1252 {
912#if CORO_USE_VALGRIND 1253 #if CORO_USE_VALGRIND
913 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1254 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1255 #endif
1256
1257#if HAVE_MMAP
1258 if (cctx->flags & CC_MAPPED)
1259 munmap (cctx->sptr, cctx->ssize);
1260 else
914#endif 1261#endif
915
916#if HAVE_MMAP
917 if (cctx->flags & CC_MAPPED)
918 munmap (cctx->sptr, cctx->ssize);
919 else
920#endif
921 Safefree (cctx->sptr); 1262 Safefree (cctx->sptr);
1263 }
922 1264
923 Safefree (cctx); 1265 Safefree (cctx);
924} 1266}
1267
1268/* wether this cctx should be destructed */
1269#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
925 1270
926static coro_cctx * 1271static coro_cctx *
927cctx_get (pTHX) 1272cctx_get (pTHX)
928{ 1273{
929 while (cctx_first) 1274 while (expect_true (cctx_first))
930 { 1275 {
931 coro_cctx *cctx = cctx_first; 1276 coro_cctx *cctx = cctx_first;
932 cctx_first = cctx->next; 1277 cctx_first = cctx->next;
933 --cctx_idle; 1278 --cctx_idle;
934 1279
935 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1280 if (expect_true (!CCTX_EXPIRED (cctx)))
936 return cctx; 1281 return cctx;
937 1282
938 cctx_destroy (cctx); 1283 cctx_destroy (cctx);
939 } 1284 }
940 1285
941 return cctx_new (); 1286 return cctx_new_run ();
942} 1287}
943 1288
944static void 1289static void
945cctx_put (coro_cctx *cctx) 1290cctx_put (coro_cctx *cctx)
946{ 1291{
1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1293
947 /* free another cctx if overlimit */ 1294 /* free another cctx if overlimit */
948 if (cctx_idle >= MAX_IDLE_CCTX) 1295 if (expect_false (cctx_idle >= cctx_max_idle))
949 { 1296 {
950 coro_cctx *first = cctx_first; 1297 coro_cctx *first = cctx_first;
951 cctx_first = first->next; 1298 cctx_first = first->next;
952 --cctx_idle; 1299 --cctx_idle;
953 1300
… …
959 cctx_first = cctx; 1306 cctx_first = cctx;
960} 1307}
961 1308
962/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
963 1310
964static void NOINLINE 1311static void
965transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
966{ 1313{
967 if (prev != next) 1314 /* TODO: throwing up here is considered harmful */
1315
1316 if (expect_true (prev != next))
968 { 1317 {
969 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
970 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
971 1320
972 if (next->flags & CF_RUNNING) 1321 if (expect_false (next->flags & CF_RUNNING))
973 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
974 1323
975 if (next->flags & CF_DESTROYED) 1324 if (expect_false (next->flags & CF_DESTROYED))
976 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
977 1326
1327#if !PERL_VERSION_ATLEAST (5,10,0)
978 if (PL_lex_state != LEX_NOTPARSING) 1328 if (expect_false (PL_lex_state != LEX_NOTPARSING))
979 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1330#endif
980 } 1331 }
981} 1332}
982 1333
983/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
984static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
985transfer (pTHX_ struct coro *prev, struct coro *next) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
986{ 1337{
987 dSTACKLEVEL; 1338 dSTACKLEVEL;
988 1339
989 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
990 if (!next) 1341 if (expect_false (!next))
991 { 1342 {
992 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
993 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1344 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
994 } 1345 }
995 else if (prev != next) 1346 else if (expect_true (prev != next))
996 { 1347 {
997 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
998 1349
999 if (prev->flags & CF_NEW) 1350 if (expect_false (prev->flags & CF_NEW))
1000 { 1351 {
1001 /* create a new empty context */ 1352 /* create a new empty/source context */
1002 Newz (0, prev->cctx, 1, coro_cctx); 1353 prev->cctx = cctx_new_empty ();
1003 prev->flags &= ~CF_NEW; 1354 prev->flags &= ~CF_NEW;
1004 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1005 } 1356 }
1006 1357
1007 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1008 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1009 1360
1010 LOCK; 1361 /* first get rid of the old state */
1362 save_perl (aTHX_ prev);
1011 1363
1012 if (next->flags & CF_NEW) 1364 if (expect_false (next->flags & CF_NEW))
1013 { 1365 {
1014 /* need to start coroutine */ 1366 /* need to start coroutine */
1015 next->flags &= ~CF_NEW; 1367 next->flags &= ~CF_NEW;
1016 /* first get rid of the old state */
1017 save_perl (aTHX_ prev);
1018 /* setup coroutine call */ 1368 /* setup coroutine call */
1019 coro_setup (aTHX_ next); 1369 coro_setup (aTHX_ next);
1020 } 1370 }
1021 else 1371 else
1372 load_perl (aTHX_ next);
1373
1374 prev__cctx = prev->cctx;
1375
1376 /* possibly untie and reuse the cctx */
1377 if (expect_true (
1378 prev__cctx->idle_sp == STACKLEVEL
1379 && !(prev__cctx->flags & CC_TRACE)
1380 && !force_cctx
1381 ))
1022 { 1382 {
1023 /* coroutine already started */
1024 save_perl (aTHX_ prev);
1025 load_perl (aTHX_ next);
1026 }
1027
1028 prev__cctx = prev->cctx;
1029
1030 /* possibly "free" the cctx */
1031 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1032 {
1033 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1034 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1035 1385
1036 prev->cctx = 0; 1386 prev->cctx = 0;
1387
1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1389 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1390 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1391 if (!next->cctx)
1392 next->cctx = cctx_get (aTHX);
1037 1393
1038 cctx_put (prev__cctx); 1394 cctx_put (prev__cctx);
1039 } 1395 }
1040 1396
1041 ++next->usecount; 1397 ++next->usecount;
1042 1398
1043 if (!next->cctx) 1399 if (expect_true (!next->cctx))
1044 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1045 1401
1046 if (prev__cctx != next->cctx) 1402 if (expect_false (prev__cctx != next->cctx))
1047 { 1403 {
1048 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1049 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
1050 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1051 } 1407 }
1052 1408
1053 free_coro_mortal (aTHX); 1409 transfer_tail (aTHX);
1054 UNLOCK;
1055 } 1410 }
1056} 1411}
1057 1412
1058struct transfer_args
1059{
1060 struct coro *prev, *next;
1061};
1062
1063#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1064#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1065 1415
1066/** high level stuff ********************************************************/ 1416/** high level stuff ********************************************************/
1067 1417
1068static int 1418static int
1069coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1070{ 1420{
1071 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1072 return 0; 1422 return 0;
1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1073 1426
1074 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1075 1428
1076 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1077 { 1430 {
1078 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1079 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1080 LOCK;
1081 --coro_nready; 1433 --coro_nready;
1082 UNLOCK;
1083 } 1434 }
1084 else 1435 else
1085 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1086 1437
1087 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1088 { 1439 {
1089 struct coro temp; 1440 struct coro temp;
1090 1441
1091 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1092 croak ("FATAL: tried to destroy currently running coroutine");
1093 1443
1094 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1095 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1096 1446
1097 coro_destroy (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
1098 1448
1099 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1449 load_perl (aTHX_ &temp);
1100 1450
1101 coro->mainstack = 0; 1451 coro->slot = 0;
1102 } 1452 }
1103 1453
1104 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1105 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1106 1458
1107 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1108 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1109 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1110 1462
… …
1148# define MGf_DUP 0 1500# define MGf_DUP 0
1149#endif 1501#endif
1150}; 1502};
1151 1503
1152static void 1504static void
1153prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1505prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1154{ 1506{
1155 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1156 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1157 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1158} 1510}
1159 1511
1160static void 1512static void
1161api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1162{ 1514{
1163 dTHX;
1164 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1165 1516
1166 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167 TRANSFER (ta); 1518 TRANSFER (ta, 1);
1519}
1520
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1168} 1542}
1169 1543
1170/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1171 1545
1172static void 1546INLINE void
1173coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1174{ 1548{
1175 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1176} 1550}
1177 1551
1178static SV * 1552INLINE SV *
1179coro_deq (pTHX_ int min_prio) 1553coro_deq (pTHX)
1180{ 1554{
1181 int prio = PRIO_MAX - PRIO_MIN; 1555 int prio;
1182 1556
1183 min_prio -= PRIO_MIN;
1184 if (min_prio < 0)
1185 min_prio = 0;
1186
1187 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1188 if (AvFILLp (coro_ready [prio]) >= 0) 1558 if (AvFILLp (coro_ready [prio]) >= 0)
1189 return av_shift (coro_ready [prio]); 1559 return av_shift (coro_ready [prio]);
1190 1560
1191 return 0; 1561 return 0;
1192} 1562}
1193 1563
1194static int 1564static int
1195api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1196{ 1566{
1197 dTHX;
1198 struct coro *coro; 1567 struct coro *coro;
1568 SV *sv_hook;
1569 void (*xs_hook)(void);
1199 1570
1200 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
1201 coro_sv = SvRV (coro_sv); 1572 coro_sv = SvRV (coro_sv);
1202 1573
1203 coro = SvSTATE (coro_sv); 1574 coro = SvSTATE (coro_sv);
… …
1205 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1206 return 0; 1577 return 0;
1207 1578
1208 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1209 1580
1210 LOCK; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1211 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1583
1584 coro_enq (aTHX_ coro);
1212 ++coro_nready; 1585 ++coro_nready;
1213 UNLOCK; 1586
1587 if (sv_hook)
1588 {
1589 dSP;
1590
1591 ENTER;
1592 SAVETMPS;
1593
1594 PUSHMARK (SP);
1595 PUTBACK;
1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1597
1598 FREETMPS;
1599 LEAVE;
1600 }
1601
1602 if (xs_hook)
1603 xs_hook ();
1214 1604
1215 return 1; 1605 return 1;
1216} 1606}
1217 1607
1218static int 1608static int
1219api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1220{ 1610{
1221 dTHX;
1222 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1223} 1612}
1224 1613
1225static void 1614INLINE void
1226prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1227{ 1616{
1228 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1229 1618
1230 for (;;) 1619 for (;;)
1231 { 1620 {
1232 LOCK;
1233 next_sv = coro_deq (aTHX_ PRIO_MIN); 1621 next_sv = coro_deq (aTHX);
1234 1622
1235 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1236 if (!next_sv) 1624 if (expect_false (!next_sv))
1237 { 1625 {
1238 dSP; 1626 dSP;
1239 UNLOCK;
1240 1627
1241 ENTER; 1628 ENTER;
1242 SAVETMPS; 1629 SAVETMPS;
1243 1630
1244 PUSHMARK (SP); 1631 PUSHMARK (SP);
1245 PUTBACK; 1632 PUTBACK;
1246 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1247 1634
1248 FREETMPS; 1635 FREETMPS;
1249 LEAVE; 1636 LEAVE;
1250 continue; 1637 continue;
1251 } 1638 }
1252 1639
1253 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1254 1641
1255 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1256 if (ta->next->flags & CF_DESTROYED) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1257 { 1644 {
1258 UNLOCK;
1259 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1260 /* coro_nready is already taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1261 continue; 1647 continue;
1262 } 1648 }
1263 1649
1264 --coro_nready; 1650 --coro_nready;
1265 UNLOCK;
1266 break; 1651 break;
1267 } 1652 }
1268 1653
1269 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1270 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1271 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1272 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1273 assert (ta->next->flags & CF_READY); 1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1274 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1275 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1276 1661
1277 LOCK;
1278 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1279 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1280 UNLOCK;
1281} 1664}
1282 1665
1283static void 1666INLINE void
1284prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1285{ 1668{
1286 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1287 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1288} 1671}
1289 1672
1673INLINE void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{
1676 SV *prev = SvRV (coro_current);
1677
1678 if (coro_nready)
1679 {
1680 prepare_schedule (aTHX_ ta);
1681 api_ready (aTHX_ prev);
1682 }
1683 else
1684 prepare_nop (aTHX_ ta);
1685}
1686
1687static void
1688api_schedule (pTHX)
1689{
1690 struct coro_transfer_args ta;
1691
1692 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1);
1694}
1695
1290static int 1696static int
1291prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1292{ 1698{
1293 if (coro_nready) 1699 struct coro_transfer_args ta;
1294 { 1700
1295 SV *prev = SvRV (coro_current);
1296 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1297 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1298 return 1; 1706 return 1;
1299 } 1707 }
1300 else 1708 else
1301 return 0; 1709 return 0;
1302} 1710}
1303 1711
1304static void
1305api_schedule (void)
1306{
1307 dTHX;
1308 struct transfer_args ta;
1309
1310 prepare_schedule (aTHX_ &ta);
1311 TRANSFER (ta);
1312}
1313
1314static int 1712static int
1315api_cede (void) 1713api_cede_notself (pTHX)
1316{ 1714{
1317 dTHX; 1715 if (coro_nready)
1716 {
1318 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1319 1718
1320 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1321
1322 if (ta.prev != ta.next)
1323 {
1324 TRANSFER (ta); 1720 TRANSFER (ta, 1);
1325 return 1; 1721 return 1;
1326 } 1722 }
1327 else 1723 else
1328 return 0; 1724 return 0;
1329} 1725}
1330 1726
1331static int 1727static void
1332api_cede_notself (void)
1333{
1334 dTHX;
1335 struct transfer_args ta;
1336
1337 if (prepare_cede_notself (aTHX_ &ta))
1338 {
1339 TRANSFER (ta);
1340 return 1;
1341 }
1342 else
1343 return 0;
1344}
1345
1346static void
1347api_trace (SV *coro_sv, int flags) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1348{ 1729{
1349 dTHX;
1350 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1351 1731
1352 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1353 { 1733 {
1354 if (!coro->cctx) 1734 if (!coro->cctx)
1355 coro->cctx = cctx_new (); 1735 coro->cctx = cctx_new_run ();
1356 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1357 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1358 1738
1359 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1360 } 1740 }
1361 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1362 { 1742 {
1363 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1743 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1364 1744
1365 if (coro->flags & CF_RUNNING) 1745 if (coro->flags & CF_RUNNING)
1366 PL_runops = RUNOPS_DEFAULT; 1746 PL_runops = RUNOPS_DEFAULT;
1367 else 1747 else
1368 coro->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1749 }
1750}
1751
1752/*****************************************************************************/
1753/* async pool handler */
1754
1755static int
1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1757{
1758 HV *hv = (HV *)SvRV (coro_current);
1759 struct coro *coro = (struct coro *)frame->data;
1760
1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 int i, len;
1766
1767 hv_store (hv, "desc", sizeof ("desc") - 1,
1768 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1769
1770 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1771
1772 len = av_len (coro->invoke_av);
1773
1774 {
1775 dSP;
1776 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1777 PUTBACK;
1369 } 1778 }
1779
1780 SvREFCNT_dec (GvAV (PL_defgv));
1781 GvAV (PL_defgv) = coro->invoke_av;
1782 coro->invoke_av = 0;
1783
1784 return 0;
1785 }
1370} 1786}
1787
1788static void
1789slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1790{
1791 HV *hv = (HV *)SvRV (coro_current);
1792 struct coro *coro = SvSTATE_hv ((SV *)hv);
1793
1794 if (expect_true (coro->saved_deffh))
1795 {
1796 /* subsequent iteration */
1797 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1798 coro->saved_deffh = 0;
1799
1800 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1801 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1802 {
1803 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1804 coro->invoke_av = newAV ();
1805
1806 frame->prepare = prepare_nop;
1807 }
1808 else
1809 {
1810 av_clear (GvAV (PL_defgv));
1811 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1812
1813 coro->prio = 0;
1814
1815 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1816 api_trace (aTHX_ coro_current, 0);
1817
1818 frame->prepare = prepare_schedule;
1819 av_push (av_async_pool, SvREFCNT_inc (hv));
1820 }
1821 }
1822 else
1823 {
1824 /* first iteration, simply fall through */
1825 frame->prepare = prepare_nop;
1826 }
1827
1828 frame->check = slf_check_pool_handler;
1829 frame->data = (void *)coro;
1830}
1831
1832/*****************************************************************************/
1833/* rouse callback */
1834
1835#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1836
1837static void
1838coro_rouse_callback (pTHX_ CV *cv)
1839{
1840 dXSARGS;
1841 SV *data = (SV *)GENSUB_ARG;
1842
1843 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1844 {
1845 /* first call, set args */
1846 int i;
1847 AV *av = newAV ();
1848 SV *coro = SvRV (data);
1849
1850 SvRV_set (data, (SV *)av);
1851 api_ready (aTHX_ coro);
1852 SvREFCNT_dec (coro);
1853
1854 /* better take a full copy of the arguments */
1855 while (items--)
1856 av_store (av, items, newSVsv (ST (items)));
1857 }
1858
1859 XSRETURN_EMPTY;
1860}
1861
1862static int
1863slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1864{
1865 SV *data = (SV *)frame->data;
1866
1867 if (CORO_THROW)
1868 return 0;
1869
1870 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1871 return 1;
1872
1873 /* now push all results on the stack */
1874 {
1875 dSP;
1876 AV *av = (AV *)SvRV (data);
1877 int i;
1878
1879 EXTEND (SP, AvFILLp (av) + 1);
1880 for (i = 0; i <= AvFILLp (av); ++i)
1881 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1882
1883 /* we have stolen the elements, so ste length to zero and free */
1884 AvFILLp (av) = -1;
1885 av_undef (av);
1886
1887 PUTBACK;
1888 }
1889
1890 return 0;
1891}
1892
1893static void
1894slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1895{
1896 SV *cb;
1897
1898 if (items)
1899 cb = arg [0];
1900 else
1901 {
1902 struct coro *coro = SvSTATE_current;
1903
1904 if (!coro->rouse_cb)
1905 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1906
1907 cb = sv_2mortal (coro->rouse_cb);
1908 coro->rouse_cb = 0;
1909 }
1910
1911 if (!SvROK (cb)
1912 || SvTYPE (SvRV (cb)) != SVt_PVCV
1913 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1914 croak ("Coro::rouse_wait called with illegal callback argument,");
1915
1916 {
1917 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1918 SV *data = (SV *)GENSUB_ARG;
1919
1920 frame->data = (void *)data;
1921 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1922 frame->check = slf_check_rouse_wait;
1923 }
1924}
1925
1926static SV *
1927coro_new_rouse_cb (pTHX)
1928{
1929 HV *hv = (HV *)SvRV (coro_current);
1930 struct coro *coro = SvSTATE_hv (hv);
1931 SV *data = newRV_inc ((SV *)hv);
1932 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1933
1934 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1935 SvREFCNT_dec (data); /* magicext increases the refcount */
1936
1937 SvREFCNT_dec (coro->rouse_cb);
1938 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1939
1940 return cb;
1941}
1942
1943/*****************************************************************************/
1944/* schedule-like-function opcode (SLF) */
1945
1946static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1947static const CV *slf_cv;
1948static SV **slf_argv;
1949static int slf_argc, slf_arga; /* count, allocated */
1950static I32 slf_ax; /* top of stack, for restore */
1951
1952/* this restores the stack in the case we patched the entersub, to */
1953/* recreate the stack frame as perl will on following calls */
1954/* since entersub cleared the stack */
1955static OP *
1956pp_restore (pTHX)
1957{
1958 int i;
1959 SV **SP = PL_stack_base + slf_ax;
1960
1961 PUSHMARK (SP);
1962
1963 EXTEND (SP, slf_argc + 1);
1964
1965 for (i = 0; i < slf_argc; ++i)
1966 PUSHs (sv_2mortal (slf_argv [i]));
1967
1968 PUSHs ((SV *)CvGV (slf_cv));
1969
1970 RETURNOP (slf_restore.op_first);
1971}
1972
1973static void
1974slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1975{
1976 SV **arg = (SV **)slf_frame.data;
1977
1978 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1979}
1980
1981static void
1982slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1983{
1984 if (items != 2)
1985 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1986
1987 frame->prepare = slf_prepare_transfer;
1988 frame->check = slf_check_nop;
1989 frame->data = (void *)arg; /* let's hope it will stay valid */
1990}
1991
1992static void
1993slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1994{
1995 frame->prepare = prepare_schedule;
1996 frame->check = slf_check_nop;
1997}
1998
1999static void
2000slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2001{
2002 frame->prepare = prepare_cede;
2003 frame->check = slf_check_nop;
2004}
2005
2006static void
2007slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 frame->prepare = prepare_cede_notself;
2010 frame->check = slf_check_nop;
2011}
2012
2013/*
2014 * these not obviously related functions are all rolled into one
2015 * function to increase chances that they all will call transfer with the same
2016 * stack offset
2017 * SLF stands for "schedule-like-function".
2018 */
2019static OP *
2020pp_slf (pTHX)
2021{
2022 I32 checkmark; /* mark SP to see how many elements check has pushed */
2023
2024 /* set up the slf frame, unless it has already been set-up */
2025 /* the latter happens when a new coro has been started */
2026 /* or when a new cctx was attached to an existing coroutine */
2027 if (expect_true (!slf_frame.prepare))
2028 {
2029 /* first iteration */
2030 dSP;
2031 SV **arg = PL_stack_base + TOPMARK + 1;
2032 int items = SP - arg; /* args without function object */
2033 SV *gv = *sp;
2034
2035 /* do a quick consistency check on the "function" object, and if it isn't */
2036 /* for us, divert to the real entersub */
2037 if (SvTYPE (gv) != SVt_PVGV
2038 || !GvCV (gv)
2039 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2040 return PL_ppaddr[OP_ENTERSUB](aTHX);
2041
2042 if (!(PL_op->op_flags & OPf_STACKED))
2043 {
2044 /* ampersand-form of call, use @_ instead of stack */
2045 AV *av = GvAV (PL_defgv);
2046 arg = AvARRAY (av);
2047 items = AvFILLp (av) + 1;
2048 }
2049
2050 /* now call the init function, which needs to set up slf_frame */
2051 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2052 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2053
2054 /* pop args */
2055 SP = PL_stack_base + POPMARK;
2056
2057 PUTBACK;
2058 }
2059
2060 /* now that we have a slf_frame, interpret it! */
2061 /* we use a callback system not to make the code needlessly */
2062 /* complicated, but so we can run multiple perl coros from one cctx */
2063
2064 do
2065 {
2066 struct coro_transfer_args ta;
2067
2068 slf_frame.prepare (aTHX_ &ta);
2069 TRANSFER (ta, 0);
2070
2071 checkmark = PL_stack_sp - PL_stack_base;
2072 }
2073 while (slf_frame.check (aTHX_ &slf_frame));
2074
2075 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2076
2077 /* exception handling */
2078 if (expect_false (CORO_THROW))
2079 {
2080 SV *exception = sv_2mortal (CORO_THROW);
2081
2082 CORO_THROW = 0;
2083 sv_setsv (ERRSV, exception);
2084 croak (0);
2085 }
2086
2087 /* return value handling - mostly like entersub */
2088 /* make sure we put something on the stack in scalar context */
2089 if (GIMME_V == G_SCALAR)
2090 {
2091 dSP;
2092 SV **bot = PL_stack_base + checkmark;
2093
2094 if (sp == bot) /* too few, push undef */
2095 bot [1] = &PL_sv_undef;
2096 else if (sp != bot + 1) /* too many, take last one */
2097 bot [1] = *sp;
2098
2099 SP = bot + 1;
2100
2101 PUTBACK;
2102 }
2103
2104 return NORMAL;
2105}
2106
2107static void
2108api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2109{
2110 int i;
2111 SV **arg = PL_stack_base + ax;
2112 int items = PL_stack_sp - arg + 1;
2113
2114 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2115
2116 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2117 && PL_op->op_ppaddr != pp_slf)
2118 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2119
2120 CvFLAGS (cv) |= CVf_SLF;
2121 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2122 slf_cv = cv;
2123
2124 /* we patch the op, and then re-run the whole call */
2125 /* we have to put the same argument on the stack for this to work */
2126 /* and this will be done by pp_restore */
2127 slf_restore.op_next = (OP *)&slf_restore;
2128 slf_restore.op_type = OP_CUSTOM;
2129 slf_restore.op_ppaddr = pp_restore;
2130 slf_restore.op_first = PL_op;
2131
2132 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2133
2134 if (PL_op->op_flags & OPf_STACKED)
2135 {
2136 if (items > slf_arga)
2137 {
2138 slf_arga = items;
2139 free (slf_argv);
2140 slf_argv = malloc (slf_arga * sizeof (SV *));
2141 }
2142
2143 slf_argc = items;
2144
2145 for (i = 0; i < items; ++i)
2146 slf_argv [i] = SvREFCNT_inc (arg [i]);
2147 }
2148 else
2149 slf_argc = 0;
2150
2151 PL_op->op_ppaddr = pp_slf;
2152 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2153
2154 PL_op = (OP *)&slf_restore;
2155}
2156
2157/*****************************************************************************/
2158/* PerlIO::cede */
2159
2160typedef struct
2161{
2162 PerlIOBuf base;
2163 NV next, every;
2164} PerlIOCede;
2165
2166static IV
2167PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2168{
2169 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2170
2171 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2172 self->next = nvtime () + self->every;
2173
2174 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2175}
2176
2177static SV *
2178PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2179{
2180 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2181
2182 return newSVnv (self->every);
2183}
2184
2185static IV
2186PerlIOCede_flush (pTHX_ PerlIO *f)
2187{
2188 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2189 double now = nvtime ();
2190
2191 if (now >= self->next)
2192 {
2193 api_cede (aTHX);
2194 self->next = now + self->every;
2195 }
2196
2197 return PerlIOBuf_flush (aTHX_ f);
2198}
2199
2200static PerlIO_funcs PerlIO_cede =
2201{
2202 sizeof(PerlIO_funcs),
2203 "cede",
2204 sizeof(PerlIOCede),
2205 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2206 PerlIOCede_pushed,
2207 PerlIOBuf_popped,
2208 PerlIOBuf_open,
2209 PerlIOBase_binmode,
2210 PerlIOCede_getarg,
2211 PerlIOBase_fileno,
2212 PerlIOBuf_dup,
2213 PerlIOBuf_read,
2214 PerlIOBuf_unread,
2215 PerlIOBuf_write,
2216 PerlIOBuf_seek,
2217 PerlIOBuf_tell,
2218 PerlIOBuf_close,
2219 PerlIOCede_flush,
2220 PerlIOBuf_fill,
2221 PerlIOBase_eof,
2222 PerlIOBase_error,
2223 PerlIOBase_clearerr,
2224 PerlIOBase_setlinebuf,
2225 PerlIOBuf_get_base,
2226 PerlIOBuf_bufsiz,
2227 PerlIOBuf_get_ptr,
2228 PerlIOBuf_get_cnt,
2229 PerlIOBuf_set_ptrcnt,
2230};
2231
2232/*****************************************************************************/
2233/* Coro::Semaphore & Coro::Signal */
2234
2235static SV *
2236coro_waitarray_new (pTHX_ int count)
2237{
2238 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2239 AV *av = newAV ();
2240 SV **ary;
2241
2242 /* unfortunately, building manually saves memory */
2243 Newx (ary, 2, SV *);
2244 AvALLOC (av) = ary;
2245 /*AvARRAY (av) = ary;*/
2246 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2247 AvMAX (av) = 1;
2248 AvFILLp (av) = 0;
2249 ary [0] = newSViv (count);
2250
2251 return newRV_noinc ((SV *)av);
2252}
2253
2254/* semaphore */
2255
2256static void
2257coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2258{
2259 SV *count_sv = AvARRAY (av)[0];
2260 IV count = SvIVX (count_sv);
2261
2262 count += adjust;
2263 SvIVX (count_sv) = count;
2264
2265 /* now wake up as many waiters as are expected to lock */
2266 while (count > 0 && AvFILLp (av) > 0)
2267 {
2268 SV *cb;
2269
2270 /* swap first two elements so we can shift a waiter */
2271 AvARRAY (av)[0] = AvARRAY (av)[1];
2272 AvARRAY (av)[1] = count_sv;
2273 cb = av_shift (av);
2274
2275 if (SvOBJECT (cb))
2276 {
2277 api_ready (aTHX_ cb);
2278 --count;
2279 }
2280 else if (SvTYPE (cb) == SVt_PVCV)
2281 {
2282 dSP;
2283 PUSHMARK (SP);
2284 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2285 PUTBACK;
2286 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2287 }
2288
2289 SvREFCNT_dec (cb);
2290 }
2291}
2292
2293static void
2294coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2295{
2296 /* call $sem->adjust (0) to possibly wake up some other waiters */
2297 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2298}
2299
2300static int
2301slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2302{
2303 AV *av = (AV *)frame->data;
2304 SV *count_sv = AvARRAY (av)[0];
2305
2306 /* if we are about to throw, don't actually acquire the lock, just throw */
2307 if (CORO_THROW)
2308 return 0;
2309 else if (SvIVX (count_sv) > 0)
2310 {
2311 SvSTATE_current->on_destroy = 0;
2312
2313 if (acquire)
2314 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2315 else
2316 coro_semaphore_adjust (aTHX_ av, 0);
2317
2318 return 0;
2319 }
2320 else
2321 {
2322 int i;
2323 /* if we were woken up but can't down, we look through the whole */
2324 /* waiters list and only add us if we aren't in there already */
2325 /* this avoids some degenerate memory usage cases */
2326
2327 for (i = 1; i <= AvFILLp (av); ++i)
2328 if (AvARRAY (av)[i] == SvRV (coro_current))
2329 return 1;
2330
2331 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2332 return 1;
2333 }
2334}
2335
2336static int
2337slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2338{
2339 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2340}
2341
2342static int
2343slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2344{
2345 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2346}
2347
2348static void
2349slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2350{
2351 AV *av = (AV *)SvRV (arg [0]);
2352
2353 if (SvIVX (AvARRAY (av)[0]) > 0)
2354 {
2355 frame->data = (void *)av;
2356 frame->prepare = prepare_nop;
2357 }
2358 else
2359 {
2360 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2361
2362 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2363 frame->prepare = prepare_schedule;
2364
2365 /* to avoid race conditions when a woken-up coro gets terminated */
2366 /* we arrange for a temporary on_destroy that calls adjust (0) */
2367 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2368 }
2369}
2370
2371static void
2372slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2373{
2374 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2375 frame->check = slf_check_semaphore_down;
2376}
2377
2378static void
2379slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2380{
2381 if (items >= 2)
2382 {
2383 /* callback form */
2384 AV *av = (AV *)SvRV (arg [0]);
2385 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2386
2387 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2388
2389 if (SvIVX (AvARRAY (av)[0]) > 0)
2390 coro_semaphore_adjust (aTHX_ av, 0);
2391
2392 frame->prepare = prepare_nop;
2393 frame->check = slf_check_nop;
2394 }
2395 else
2396 {
2397 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2398 frame->check = slf_check_semaphore_wait;
2399 }
2400}
2401
2402/* signal */
2403
2404static void
2405coro_signal_wake (pTHX_ AV *av, int count)
2406{
2407 SvIVX (AvARRAY (av)[0]) = 0;
2408
2409 /* now signal count waiters */
2410 while (count > 0 && AvFILLp (av) > 0)
2411 {
2412 SV *cb;
2413
2414 /* swap first two elements so we can shift a waiter */
2415 cb = AvARRAY (av)[0];
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = cb;
2418
2419 cb = av_shift (av);
2420
2421 api_ready (aTHX_ cb);
2422 sv_setiv (cb, 0); /* signal waiter */
2423 SvREFCNT_dec (cb);
2424
2425 --count;
2426 }
2427}
2428
2429static int
2430slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2431{
2432 /* if we are about to throw, also stop waiting */
2433 return SvROK ((SV *)frame->data) && !CORO_THROW;
2434}
2435
2436static void
2437slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2438{
2439 AV *av = (AV *)SvRV (arg [0]);
2440
2441 if (SvIVX (AvARRAY (av)[0]))
2442 {
2443 SvIVX (AvARRAY (av)[0]) = 0;
2444 frame->prepare = prepare_nop;
2445 frame->check = slf_check_nop;
2446 }
2447 else
2448 {
2449 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2450
2451 av_push (av, waiter);
2452
2453 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2454 frame->prepare = prepare_schedule;
2455 frame->check = slf_check_signal_wait;
2456 }
2457}
2458
2459/*****************************************************************************/
2460/* Coro::AIO */
2461
2462#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2463
2464/* helper storage struct */
2465struct io_state
2466{
2467 int errorno;
2468 I32 laststype; /* U16 in 5.10.0 */
2469 int laststatval;
2470 Stat_t statcache;
2471};
2472
2473static void
2474coro_aio_callback (pTHX_ CV *cv)
2475{
2476 dXSARGS;
2477 AV *state = (AV *)GENSUB_ARG;
2478 SV *coro = av_pop (state);
2479 SV *data_sv = newSV (sizeof (struct io_state));
2480
2481 av_extend (state, items - 1);
2482
2483 sv_upgrade (data_sv, SVt_PV);
2484 SvCUR_set (data_sv, sizeof (struct io_state));
2485 SvPOK_only (data_sv);
2486
2487 {
2488 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2489
2490 data->errorno = errno;
2491 data->laststype = PL_laststype;
2492 data->laststatval = PL_laststatval;
2493 data->statcache = PL_statcache;
2494 }
2495
2496 /* now build the result vector out of all the parameters and the data_sv */
2497 {
2498 int i;
2499
2500 for (i = 0; i < items; ++i)
2501 av_push (state, SvREFCNT_inc_NN (ST (i)));
2502 }
2503
2504 av_push (state, data_sv);
2505
2506 api_ready (aTHX_ coro);
2507 SvREFCNT_dec (coro);
2508 SvREFCNT_dec ((AV *)state);
2509}
2510
2511static int
2512slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2513{
2514 AV *state = (AV *)frame->data;
2515
2516 /* if we are about to throw, return early */
2517 /* this does not cancel the aio request, but at least */
2518 /* it quickly returns */
2519 if (CORO_THROW)
2520 return 0;
2521
2522 /* one element that is an RV? repeat! */
2523 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2524 return 1;
2525
2526 /* restore status */
2527 {
2528 SV *data_sv = av_pop (state);
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 errno = data->errorno;
2532 PL_laststype = data->laststype;
2533 PL_laststatval = data->laststatval;
2534 PL_statcache = data->statcache;
2535
2536 SvREFCNT_dec (data_sv);
2537 }
2538
2539 /* push result values */
2540 {
2541 dSP;
2542 int i;
2543
2544 EXTEND (SP, AvFILLp (state) + 1);
2545 for (i = 0; i <= AvFILLp (state); ++i)
2546 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2547
2548 PUTBACK;
2549 }
2550
2551 return 0;
2552}
2553
2554static void
2555slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2556{
2557 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2558 SV *coro_hv = SvRV (coro_current);
2559 struct coro *coro = SvSTATE_hv (coro_hv);
2560
2561 /* put our coroutine id on the state arg */
2562 av_push (state, SvREFCNT_inc_NN (coro_hv));
2563
2564 /* first see whether we have a non-zero priority and set it as AIO prio */
2565 if (coro->prio)
2566 {
2567 dSP;
2568
2569 static SV *prio_cv;
2570 static SV *prio_sv;
2571
2572 if (expect_false (!prio_cv))
2573 {
2574 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2575 prio_sv = newSViv (0);
2576 }
2577
2578 PUSHMARK (SP);
2579 sv_setiv (prio_sv, coro->prio);
2580 XPUSHs (prio_sv);
2581
2582 PUTBACK;
2583 call_sv (prio_cv, G_VOID | G_DISCARD);
2584 }
2585
2586 /* now call the original request */
2587 {
2588 dSP;
2589 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2590 int i;
2591
2592 PUSHMARK (SP);
2593
2594 /* first push all args to the stack */
2595 EXTEND (SP, items + 1);
2596
2597 for (i = 0; i < items; ++i)
2598 PUSHs (arg [i]);
2599
2600 /* now push the callback closure */
2601 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2602
2603 /* now call the AIO function - we assume our request is uncancelable */
2604 PUTBACK;
2605 call_sv ((SV *)req, G_VOID | G_DISCARD);
2606 }
2607
2608 /* now that the requets is going, we loop toll we have a result */
2609 frame->data = (void *)state;
2610 frame->prepare = prepare_schedule;
2611 frame->check = slf_check_aio_req;
2612}
2613
2614static void
2615coro_aio_req_xs (pTHX_ CV *cv)
2616{
2617 dXSARGS;
2618
2619 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2620
2621 XSRETURN_EMPTY;
2622}
2623
2624/*****************************************************************************/
1371 2625
1372MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2626MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1373 2627
1374PROTOTYPES: DISABLE 2628PROTOTYPES: DISABLE
1375 2629
1376BOOT: 2630BOOT:
1377{ 2631{
1378#ifdef USE_ITHREADS 2632#ifdef USE_ITHREADS
1379 MUTEX_INIT (&coro_mutex); 2633# if CORO_PTHREAD
2634 coro_thx = PERL_GET_CONTEXT;
2635# endif
1380#endif 2636#endif
1381 BOOT_PAGESIZE; 2637 BOOT_PAGESIZE;
1382 2638
1383 irsgv = gv_fetchpv ("/" , GV_ADD, SVt_PV); 2639 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1384 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD, SVt_PVIO); 2640 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2641
2642 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2643 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2644 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2645
2646 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2647 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2648 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1385 2649
1386 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2650 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1387 2651
1388 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2652 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1389 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2653 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1394 main_top_env = PL_top_env; 2658 main_top_env = PL_top_env;
1395 2659
1396 while (main_top_env->je_prev) 2660 while (main_top_env->je_prev)
1397 main_top_env = main_top_env->je_prev; 2661 main_top_env = main_top_env->je_prev;
1398 2662
2663 {
2664 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2665
2666 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2667 hv_store_ent (PL_custom_op_names, slf,
2668 newSVpv ("coro_slf", 0), 0);
2669
2670 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2671 hv_store_ent (PL_custom_op_descs, slf,
2672 newSVpv ("coro schedule like function", 0), 0);
2673 }
2674
1399 coroapi.ver = CORO_API_VERSION; 2675 coroapi.ver = CORO_API_VERSION;
2676 coroapi.rev = CORO_API_REVISION;
2677
1400 coroapi.transfer = api_transfer; 2678 coroapi.transfer = api_transfer;
2679
2680 coroapi.sv_state = SvSTATE_;
2681 coroapi.execute_slf = api_execute_slf;
2682 coroapi.prepare_nop = prepare_nop;
2683 coroapi.prepare_schedule = prepare_schedule;
2684 coroapi.prepare_cede = prepare_cede;
2685 coroapi.prepare_cede_notself = prepare_cede_notself;
2686
2687 {
2688 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2689
2690 if (!svp) croak ("Time::HiRes is required");
2691 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2692
2693 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2694 }
1401 2695
1402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2696 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1403} 2697}
1404 2698
1405SV * 2699SV *
1406new (char *klass, ...) 2700new (char *klass, ...)
2701 ALIAS:
2702 Coro::new = 1
1407 CODE: 2703 CODE:
1408{ 2704{
1409 struct coro *coro; 2705 struct coro *coro;
2706 MAGIC *mg;
1410 HV *hv; 2707 HV *hv;
2708 CV *cb;
1411 int i; 2709 int i;
2710
2711 if (items > 1)
2712 {
2713 cb = coro_sv_2cv (aTHX_ ST (1));
2714
2715 if (!ix)
2716 {
2717 if (CvISXSUB (cb))
2718 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2719
2720 if (!CvROOT (cb))
2721 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2722 }
2723 }
1412 2724
1413 Newz (0, coro, 1, struct coro); 2725 Newz (0, coro, 1, struct coro);
1414 coro->args = newAV (); 2726 coro->args = newAV ();
1415 coro->flags = CF_NEW; 2727 coro->flags = CF_NEW;
1416 2728
1417 if (coro_first) coro_first->prev = coro; 2729 if (coro_first) coro_first->prev = coro;
1418 coro->next = coro_first; 2730 coro->next = coro_first;
1419 coro_first = coro; 2731 coro_first = coro;
1420 2732
1421 coro->hv = hv = newHV (); 2733 coro->hv = hv = newHV ();
1422 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2734 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2735 mg->mg_flags |= MGf_DUP;
1423 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2736 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1424 2737
2738 if (items > 1)
2739 {
2740 av_extend (coro->args, items - 1 + ix - 1);
2741
2742 if (ix)
2743 {
2744 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2745 cb = cv_coro_run;
2746 }
2747
2748 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2749
1425 for (i = 1; i < items; i++) 2750 for (i = 2; i < items; i++)
1426 av_push (coro->args, newSVsv (ST (i))); 2751 av_push (coro->args, newSVsv (ST (i)));
2752 }
1427} 2753}
1428 OUTPUT: 2754 OUTPUT:
1429 RETVAL 2755 RETVAL
1430 2756
1431# these not obviously related functions are all rolled into the same xs
1432# function to increase chances that they all will call transfer with the same
1433# stack offset
1434void 2757void
1435_set_stacklevel (...) 2758transfer (...)
1436 ALIAS: 2759 PROTOTYPE: $$
1437 Coro::State::transfer = 1 2760 CODE:
1438 Coro::schedule = 2 2761 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1439 Coro::cede = 3
1440 Coro::cede_notself = 4
1441 CODE:
1442{
1443 struct transfer_args ta;
1444
1445 switch (ix)
1446 {
1447 case 0:
1448 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1449 ta.next = 0;
1450 break;
1451
1452 case 1:
1453 if (items != 2)
1454 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1455
1456 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1457 break;
1458
1459 case 2:
1460 prepare_schedule (aTHX_ &ta);
1461 break;
1462
1463 case 3:
1464 prepare_cede (aTHX_ &ta);
1465 break;
1466
1467 case 4:
1468 if (!prepare_cede_notself (aTHX_ &ta))
1469 XSRETURN_EMPTY;
1470
1471 break;
1472 }
1473
1474 BARRIER;
1475 TRANSFER (ta);
1476
1477 if (GIMME_V != G_VOID && ta.next != ta.prev)
1478 XSRETURN_YES;
1479}
1480 2762
1481bool 2763bool
1482_destroy (SV *coro_sv) 2764_destroy (SV *coro_sv)
1483 CODE: 2765 CODE:
1484 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2766 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1485 OUTPUT: 2767 OUTPUT:
1486 RETVAL 2768 RETVAL
1487 2769
1488void 2770void
1489_exit (code) 2771_exit (int code)
1490 int code
1491 PROTOTYPE: $ 2772 PROTOTYPE: $
1492 CODE: 2773 CODE:
1493 _exit (code); 2774 _exit (code);
1494 2775
1495int 2776int
1496cctx_stacksize (int new_stacksize = 0) 2777cctx_stacksize (int new_stacksize = 0)
2778 PROTOTYPE: ;$
1497 CODE: 2779 CODE:
1498 RETVAL = coro_stacksize; 2780 RETVAL = cctx_stacksize;
1499 if (new_stacksize) 2781 if (new_stacksize)
2782 {
1500 coro_stacksize = new_stacksize; 2783 cctx_stacksize = new_stacksize;
2784 ++cctx_gen;
2785 }
1501 OUTPUT: 2786 OUTPUT:
1502 RETVAL 2787 RETVAL
1503 2788
1504int 2789int
2790cctx_max_idle (int max_idle = 0)
2791 PROTOTYPE: ;$
2792 CODE:
2793 RETVAL = cctx_max_idle;
2794 if (max_idle > 1)
2795 cctx_max_idle = max_idle;
2796 OUTPUT:
2797 RETVAL
2798
2799int
1505cctx_count () 2800cctx_count ()
2801 PROTOTYPE:
1506 CODE: 2802 CODE:
1507 RETVAL = cctx_count; 2803 RETVAL = cctx_count;
1508 OUTPUT: 2804 OUTPUT:
1509 RETVAL 2805 RETVAL
1510 2806
1511int 2807int
1512cctx_idle () 2808cctx_idle ()
2809 PROTOTYPE:
1513 CODE: 2810 CODE:
1514 RETVAL = cctx_idle; 2811 RETVAL = cctx_idle;
1515 OUTPUT: 2812 OUTPUT:
1516 RETVAL 2813 RETVAL
1517 2814
1518void 2815void
1519list () 2816list ()
2817 PROTOTYPE:
1520 PPCODE: 2818 PPCODE:
1521{ 2819{
1522 struct coro *coro; 2820 struct coro *coro;
1523 for (coro = coro_first; coro; coro = coro->next) 2821 for (coro = coro_first; coro; coro = coro->next)
1524 if (coro->hv) 2822 if (coro->hv)
… …
1529call (Coro::State coro, SV *coderef) 2827call (Coro::State coro, SV *coderef)
1530 ALIAS: 2828 ALIAS:
1531 eval = 1 2829 eval = 1
1532 CODE: 2830 CODE:
1533{ 2831{
1534 if (coro->mainstack) 2832 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1535 { 2833 {
1536 struct coro temp; 2834 struct coro temp;
1537 Zero (&temp, 1, struct coro);
1538 2835
1539 if (!(coro->flags & CF_RUNNING)) 2836 if (!(coro->flags & CF_RUNNING))
1540 { 2837 {
2838 PUTBACK;
1541 save_perl (aTHX_ &temp); 2839 save_perl (aTHX_ &temp);
1542 load_perl (aTHX_ coro); 2840 load_perl (aTHX_ coro);
1543 } 2841 }
1544 2842
1545 { 2843 {
1546 dSP; 2844 dSP;
1547 ENTER; 2845 ENTER;
1548 SAVETMPS; 2846 SAVETMPS;
2847 PUTBACK;
2848 PUSHSTACK;
1549 PUSHMARK (SP); 2849 PUSHMARK (SP);
1550 PUTBACK; 2850
1551 if (ix) 2851 if (ix)
1552 eval_sv (coderef, 0); 2852 eval_sv (coderef, 0);
1553 else 2853 else
1554 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2854 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2855
2856 POPSTACK;
1555 SPAGAIN; 2857 SPAGAIN;
1556 FREETMPS; 2858 FREETMPS;
1557 LEAVE; 2859 LEAVE;
1558 PUTBACK; 2860 PUTBACK;
1559 } 2861 }
1560 2862
1561 if (!(coro->flags & CF_RUNNING)) 2863 if (!(coro->flags & CF_RUNNING))
1562 { 2864 {
1563 save_perl (aTHX_ coro); 2865 save_perl (aTHX_ coro);
1564 load_perl (aTHX_ &temp); 2866 load_perl (aTHX_ &temp);
2867 SPAGAIN;
1565 } 2868 }
1566 } 2869 }
1567} 2870}
1568 2871
1569SV * 2872SV *
… …
1578 RETVAL = boolSV (coro->flags & ix); 2881 RETVAL = boolSV (coro->flags & ix);
1579 OUTPUT: 2882 OUTPUT:
1580 RETVAL 2883 RETVAL
1581 2884
1582void 2885void
2886throw (Coro::State self, SV *throw = &PL_sv_undef)
2887 PROTOTYPE: $;$
2888 CODE:
2889{
2890 struct coro *current = SvSTATE_current;
2891 SV **throwp = self == current ? &CORO_THROW : &self->except;
2892 SvREFCNT_dec (*throwp);
2893 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2894}
2895
2896void
1583api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2897api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2898 PROTOTYPE: $;$
2899 C_ARGS: aTHX_ coro, flags
1584 2900
1585SV * 2901SV *
1586has_stack (Coro::State coro) 2902has_cctx (Coro::State coro)
1587 PROTOTYPE: $ 2903 PROTOTYPE: $
1588 CODE: 2904 CODE:
1589 RETVAL = boolSV (!!coro->cctx); 2905 RETVAL = boolSV (!!coro->cctx);
1590 OUTPUT: 2906 OUTPUT:
1591 RETVAL 2907 RETVAL
… …
1596 CODE: 2912 CODE:
1597 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2913 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1598 OUTPUT: 2914 OUTPUT:
1599 RETVAL 2915 RETVAL
1600 2916
1601IV 2917UV
1602rss (Coro::State coro) 2918rss (Coro::State coro)
1603 PROTOTYPE: $ 2919 PROTOTYPE: $
1604 ALIAS: 2920 ALIAS:
1605 usecount = 1 2921 usecount = 1
1606 CODE: 2922 CODE:
… …
1610 case 1: RETVAL = coro->usecount; break; 2926 case 1: RETVAL = coro->usecount; break;
1611 } 2927 }
1612 OUTPUT: 2928 OUTPUT:
1613 RETVAL 2929 RETVAL
1614 2930
2931void
2932force_cctx ()
2933 PROTOTYPE:
2934 CODE:
2935 SvSTATE_current->cctx->idle_sp = 0;
2936
2937void
2938swap_defsv (Coro::State self)
2939 PROTOTYPE: $
2940 ALIAS:
2941 swap_defav = 1
2942 CODE:
2943 if (!self->slot)
2944 croak ("cannot swap state with coroutine that has no saved state,");
2945 else
2946 {
2947 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2948 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2949
2950 SV *tmp = *src; *src = *dst; *dst = tmp;
2951 }
2952
1615 2953
1616MODULE = Coro::State PACKAGE = Coro 2954MODULE = Coro::State PACKAGE = Coro
1617 2955
1618BOOT: 2956BOOT:
1619{ 2957{
1620 int i; 2958 int i;
1621 2959
1622 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1623 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1624 av_async_pool = get_av ("Coro::async_pool", TRUE); 2960 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1625 2961 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2962 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2963 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2964 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
1626 coro_current = get_sv ("Coro::current", FALSE); 2965 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
1627 SvREADONLY_on (coro_current); 2966 SvREADONLY_on (coro_current);
1628 2967
2968 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2969 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2970 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2971 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2972
1629 coro_stash = gv_stashpv ("Coro", TRUE); 2973 coro_stash = gv_stashpv ("Coro", TRUE);
1630 2974
1631 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2975 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1632 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2976 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1633 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2977 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1634 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2978 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1637 2981
1638 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2982 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1639 coro_ready[i] = newAV (); 2983 coro_ready[i] = newAV ();
1640 2984
1641 { 2985 {
1642 SV *sv = perl_get_sv("Coro::API", 1); 2986 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1643 2987
1644 coroapi.schedule = api_schedule; 2988 coroapi.schedule = api_schedule;
1645 coroapi.cede = api_cede; 2989 coroapi.cede = api_cede;
1646 coroapi.cede_notself = api_cede_notself; 2990 coroapi.cede_notself = api_cede_notself;
1647 coroapi.ready = api_ready; 2991 coroapi.ready = api_ready;
1648 coroapi.is_ready = api_is_ready; 2992 coroapi.is_ready = api_is_ready;
1649 coroapi.nready = &coro_nready; 2993 coroapi.nready = coro_nready;
1650 coroapi.current = coro_current; 2994 coroapi.current = coro_current;
1651 2995
1652 GCoroAPI = &coroapi; 2996 /*GCoroAPI = &coroapi;*/
1653 sv_setiv (sv, (IV)&coroapi); 2997 sv_setiv (sv, (IV)&coroapi);
1654 SvREADONLY_on (sv); 2998 SvREADONLY_on (sv);
1655 } 2999 }
1656} 3000}
3001
3002void
3003schedule (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3006
3007void
3008cede (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede);
3011
3012void
3013cede_notself (...)
3014 CODE:
3015 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1657 3016
1658void 3017void
1659_set_current (SV *current) 3018_set_current (SV *current)
1660 PROTOTYPE: $ 3019 PROTOTYPE: $
1661 CODE: 3020 CODE:
1662 SvREFCNT_dec (SvRV (coro_current)); 3021 SvREFCNT_dec (SvRV (coro_current));
1663 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3022 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3023
3024void
3025_set_readyhook (SV *hook)
3026 PROTOTYPE: $
3027 CODE:
3028 SvREFCNT_dec (coro_readyhook);
3029 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1664 3030
1665int 3031int
1666prio (Coro::State coro, int newprio = 0) 3032prio (Coro::State coro, int newprio = 0)
3033 PROTOTYPE: $;$
1667 ALIAS: 3034 ALIAS:
1668 nice = 1 3035 nice = 1
1669 CODE: 3036 CODE:
1670{ 3037{
1671 RETVAL = coro->prio; 3038 RETVAL = coro->prio;
… …
1686 3053
1687SV * 3054SV *
1688ready (SV *self) 3055ready (SV *self)
1689 PROTOTYPE: $ 3056 PROTOTYPE: $
1690 CODE: 3057 CODE:
1691 RETVAL = boolSV (api_ready (self)); 3058 RETVAL = boolSV (api_ready (aTHX_ self));
1692 OUTPUT: 3059 OUTPUT:
1693 RETVAL 3060 RETVAL
1694 3061
1695int 3062int
1696nready (...) 3063nready (...)
… …
1698 CODE: 3065 CODE:
1699 RETVAL = coro_nready; 3066 RETVAL = coro_nready;
1700 OUTPUT: 3067 OUTPUT:
1701 RETVAL 3068 RETVAL
1702 3069
1703# for async_pool speedup
1704void 3070void
1705_pool_1 (SV *cb) 3071_pool_handler (...)
1706 CODE: 3072 CODE:
1707{ 3073 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1708 struct coro *coro = SvSTATE (coro_current);
1709 HV *hv = (HV *)SvRV (coro_current);
1710 AV *defav = GvAV (PL_defgv);
1711 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1712 AV *invoke_av;
1713 int i, len;
1714 3074
1715 if (!invoke) 3075void
1716 croak ("\3terminate\2\n"); 3076async_pool (SV *cv, ...)
3077 PROTOTYPE: &@
3078 PPCODE:
3079{
3080 HV *hv = (HV *)av_pop (av_async_pool);
3081 AV *av = newAV ();
3082 SV *cb = ST (0);
3083 int i;
1717 3084
1718 SvREFCNT_dec (coro->saved_deffh); 3085 av_extend (av, items - 2);
1719 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3086 for (i = 1; i < items; ++i)
3087 av_push (av, SvREFCNT_inc_NN (ST (i)));
1720 3088
1721 hv_store (hv, "desc", sizeof ("desc") - 1, 3089 if ((SV *)hv == &PL_sv_undef)
1722 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1723
1724 invoke_av = (AV *)SvRV (invoke);
1725 len = av_len (invoke_av);
1726
1727 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1728
1729 if (len > 0)
1730 { 3090 {
1731 av_fill (defav, len - 1); 3091 PUSHMARK (SP);
1732 for (i = 0; i < len; ++i) 3092 EXTEND (SP, 2);
1733 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3093 PUSHs (sv_Coro);
3094 PUSHs ((SV *)cv_pool_handler);
3095 PUTBACK;
3096 call_sv (cv_coro_new, G_SCALAR);
3097 SPAGAIN;
3098
3099 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1734 } 3100 }
1735 3101
3102 {
3103 struct coro *coro = SvSTATE_hv (hv);
3104
3105 assert (!coro->invoke_cb);
3106 assert (!coro->invoke_av);
3107 coro->invoke_cb = SvREFCNT_inc (cb);
3108 coro->invoke_av = av;
3109 }
3110
3111 api_ready ((SV *)hv);
3112
3113 if (GIMME_V != G_VOID)
3114 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3115 else
1736 SvREFCNT_dec (invoke); 3116 SvREFCNT_dec (hv);
1737} 3117}
1738 3118
1739void 3119SV *
1740_pool_2 (SV *cb) 3120rouse_cb ()
3121 PROTOTYPE:
1741 CODE: 3122 CODE:
1742{ 3123 RETVAL = coro_new_rouse_cb (aTHX);
1743 struct coro *coro = SvSTATE (coro_current);
1744
1745 sv_setsv (cb, &PL_sv_undef);
1746
1747 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1748 coro->saved_deffh = 0;
1749
1750 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1751 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1752 croak ("\3terminate\2\n");
1753
1754 av_clear (GvAV (PL_defgv));
1755 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1757
1758 coro->prio = 0;
1759
1760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1761 api_trace (coro_current, 0);
1762
1763 av_push (av_async_pool, newSVsv (coro_current));
1764}
1765
1766
1767MODULE = Coro::State PACKAGE = Coro::AIO
1768
1769SV *
1770_get_state ()
1771 CODE:
1772{
1773 struct io_state *data;
1774
1775 RETVAL = newSV (sizeof (struct io_state));
1776 data = (struct io_state *)SvPVX (RETVAL);
1777 SvCUR_set (RETVAL, sizeof (struct io_state));
1778 SvPOK_only (RETVAL);
1779
1780 data->errorno = errno;
1781 data->laststype = PL_laststype;
1782 data->laststatval = PL_laststatval;
1783 data->statcache = PL_statcache;
1784}
1785 OUTPUT: 3124 OUTPUT:
1786 RETVAL 3125 RETVAL
1787 3126
1788void 3127void
1789_set_state (char *data_) 3128rouse_wait (...)
1790 PROTOTYPE: $ 3129 PROTOTYPE: ;$
3130 PPCODE:
3131 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3132
3133
3134MODULE = Coro::State PACKAGE = PerlIO::cede
3135
3136BOOT:
3137 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3138
3139
3140MODULE = Coro::State PACKAGE = Coro::Semaphore
3141
3142SV *
3143new (SV *klass, SV *count = 0)
1791 CODE: 3144 CODE:
1792{ 3145 RETVAL = sv_bless (
1793 struct io_state *data = (void *)data_; 3146 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3147 GvSTASH (CvGV (cv))
3148 );
3149 OUTPUT:
3150 RETVAL
1794 3151
1795 errno = data->errorno; 3152# helper for Coro::Channel
1796 PL_laststype = data->laststype; 3153SV *
1797 PL_laststatval = data->laststatval; 3154_alloc (int count)
1798 PL_statcache = data->statcache; 3155 CODE:
1799} 3156 RETVAL = coro_waitarray_new (aTHX_ count);
3157 OUTPUT:
3158 RETVAL
1800 3159
3160SV *
3161count (SV *self)
3162 CODE:
3163 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3164 OUTPUT:
3165 RETVAL
3166
3167void
3168up (SV *self, int adjust = 1)
3169 ALIAS:
3170 adjust = 1
3171 CODE:
3172 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3173
3174void
3175down (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3178
3179void
3180wait (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3183
3184void
3185try (SV *self)
3186 PPCODE:
3187{
3188 AV *av = (AV *)SvRV (self);
3189 SV *count_sv = AvARRAY (av)[0];
3190 IV count = SvIVX (count_sv);
3191
3192 if (count > 0)
3193 {
3194 --count;
3195 SvIVX (count_sv) = count;
3196 XSRETURN_YES;
3197 }
3198 else
3199 XSRETURN_NO;
3200}
3201
3202void
3203waiters (SV *self)
3204 PPCODE:
3205{
3206 AV *av = (AV *)SvRV (self);
3207 int wcount = AvFILLp (av) + 1 - 1;
3208
3209 if (GIMME_V == G_SCALAR)
3210 XPUSHs (sv_2mortal (newSViv (wcount)));
3211 else
3212 {
3213 int i;
3214 EXTEND (SP, wcount);
3215 for (i = 1; i <= wcount; ++i)
3216 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3217 }
3218}
3219
3220MODULE = Coro::State PACKAGE = Coro::Signal
3221
3222SV *
3223new (SV *klass)
3224 CODE:
3225 RETVAL = sv_bless (
3226 coro_waitarray_new (aTHX_ 0),
3227 GvSTASH (CvGV (cv))
3228 );
3229 OUTPUT:
3230 RETVAL
3231
3232void
3233wait (...)
3234 CODE:
3235 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3236
3237void
3238broadcast (SV *self)
3239 CODE:
3240{
3241 AV *av = (AV *)SvRV (self);
3242 coro_signal_wake (aTHX_ av, AvFILLp (av));
3243}
3244
3245void
3246send (SV *self)
3247 CODE:
3248{
3249 AV *av = (AV *)SvRV (self);
3250
3251 if (AvFILLp (av))
3252 coro_signal_wake (aTHX_ av, 1);
3253 else
3254 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3255}
3256
3257IV
3258awaited (SV *self)
3259 CODE:
3260 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3261 OUTPUT:
3262 RETVAL
3263
3264
3265MODULE = Coro::State PACKAGE = Coro::AnyEvent
3266
3267BOOT:
3268 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3269
3270void
3271_schedule (...)
3272 CODE:
3273{
3274 static int incede;
3275
3276 api_cede_notself (aTHX);
3277
3278 ++incede;
3279 while (coro_nready >= incede && api_cede (aTHX))
3280 ;
3281
3282 sv_setsv (sv_activity, &PL_sv_undef);
3283 if (coro_nready >= incede)
3284 {
3285 PUSHMARK (SP);
3286 PUTBACK;
3287 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3288 }
3289
3290 --incede;
3291}
3292
3293
3294MODULE = Coro::State PACKAGE = Coro::AIO
3295
3296void
3297_register (char *target, char *proto, SV *req)
3298 CODE:
3299{
3300 CV *req_cv = coro_sv_2cv (aTHX_ req);
3301 /* newXSproto doesn't return the CV on 5.8 */
3302 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3303 sv_setpv ((SV *)slf_cv, proto);
3304 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3305}
3306

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