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Comparing Coro/Coro/State.xs (file contents):
Revision 1.181 by root, Wed Oct 3 17:37:33 2007 UTC vs.
Revision 1.313 by root, Thu Nov 20 03:22:59 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; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
138 177
139/* async_pool helper stuff */ 178/* async_pool helper stuff */
140static SV *sv_pool_rss; 179static SV *sv_pool_rss;
141static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
142static 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;
143 189
144static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
145static int cctx_count, cctx_idle; 191static int cctx_count, cctx_idle;
146 192
147enum { 193enum {
… …
152 CC_TRACE_LINE = 0x10, /* trace each statement */ 198 CC_TRACE_LINE = 0x10, /* trace each statement */
153 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
154}; 200};
155 201
156/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
157typedef struct coro_cctx { 203typedef struct coro_cctx
204{
158 struct coro_cctx *next; 205 struct coro_cctx *next;
159 206
160 /* the stack */ 207 /* the stack */
161 void *sptr; 208 void *sptr;
162 size_t ssize; 209 size_t ssize;
… …
165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 212 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 213 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
167 JMPENV *top_env; 214 JMPENV *top_env;
168 coro_context cctx; 215 coro_context cctx;
169 216
217 U32 gen;
170#if CORO_USE_VALGRIND 218#if CORO_USE_VALGRIND
171 int valgrind_id; 219 int valgrind_id;
172#endif 220#endif
173 unsigned char flags; 221 unsigned char flags;
174} coro_cctx; 222} coro_cctx;
… …
178 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
179 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
180 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181}; 229};
182 230
183/* this is a structure representing a perl-level coroutine */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
184struct coro { 232typedef struct
185 /* the c coroutine allocated to this perl coroutine, if any */ 233{
186 coro_cctx *cctx; 234 SV *defsv;
187 235 AV *defav;
188 /* data associated with this coroutine (initial args) */ 236 SV *errsv;
189 AV *args; 237 SV *irsgv;
190 int refcnt;
191 int flags; /* CF_ flags */
192
193 /* optionally saved, might be zero */
194 AV *defav; /* @_ */
195 SV *defsv; /* $_ */
196 SV *errsv; /* $@ */
197 GV *deffh; /* default filehandle */
198 SV *irssv; /* $/ */
199 SV *irssv_sv; /* real $/ cache */
200
201#define VAR(name,type) type name; 238#define VAR(name,type) type name;
202# include "state.h" 239# include "state.h"
203#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);
204 261
205 /* statistics */ 262 /* statistics */
206 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
207 264
208 /* coro process data */ 265 /* coro process data */
209 int prio; 266 int prio;
210 //SV *throw; 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
211 269
212 /* async_pool */ 270 /* async_pool */
213 GV *defoutgv; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
214 274
215 /* linked list */ 275 /* linked list */
216 struct coro *next, *prev; 276 struct coro *next, *prev;
217 HV *hv; /* the perl hash associated with this coro, if any */
218}; 277};
219 278
220typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
221typedef 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 */
222 286
223/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
224 288
225#define PRIO_MAX 3 289#define PRIO_MAX 3
226#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
229#define PRIO_IDLE -3 293#define PRIO_IDLE -3
230#define PRIO_MIN -4 294#define PRIO_MIN -4
231 295
232/* for Coro.pm */ 296/* for Coro.pm */
233static SV *coro_current; 297static SV *coro_current;
298static SV *coro_readyhook;
234static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
235static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
236static struct coro *coro_first; 301static struct coro *coro_first;
302#define coro_nready coroapi.nready
237 303
238/** 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}
239 344
240static AV * 345static AV *
241coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
242{ 347{
243 AV *padlist = CvPADLIST (cv); 348 AV *padlist = CvPADLIST (cv);
244 AV *newpadlist, *newpad; 349 AV *newpadlist, *newpad;
245 350
246 newpadlist = newAV (); 351 newpadlist = newAV ();
247 AvREAL_off (newpadlist); 352 AvREAL_off (newpadlist);
248#if PERL_VERSION_ATLEAST (5,9,0) 353#if PERL_VERSION_ATLEAST (5,10,0)
249 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 354 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250#else 355#else
251 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 356 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252#endif 357#endif
253 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 358 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254 --AvFILLp (padlist); 359 --AvFILLp (padlist);
255 360
256 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 361 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257 av_store (newpadlist, 1, (SV *)newpad); 362 av_store (newpadlist, 1, (SV *)newpad);
258 363
259 return newpadlist; 364 return newpadlist;
260} 365}
261 366
… …
291 396
292 /* casting is fun. */ 397 /* casting is fun. */
293 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 398 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294 free_padlist (aTHX_ padlist); 399 free_padlist (aTHX_ padlist);
295 400
296 SvREFCNT_dec (av); 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297 402
298 return 0; 403 return 0;
299} 404}
300 405
406#define CORO_MAGIC_type_cv 26
301#define PERL_MAGIC_coro PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
302 408
303static 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};
304 413
305#define CORO_MAGIC(cv) \ 414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
306 SvMAGIC (cv) \ 416 ? SvMAGIC (sv) \
307 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 417 : mg_find (sv, type))
308 ? SvMAGIC (cv) \ 418
309 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 419#define CORO_MAGIC(sv, type) \
420 (expect_true (SvMAGIC (sv)) \
421 ? CORO_MAGIC_NN (sv, type) \
310 : 0 422 : 0)
311 423
312static 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 *
313SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
314{ 429{
315 HV *stash; 430 HV *stash;
316 MAGIC *mg; 431 MAGIC *mg;
317 432
318 if (SvROK (coro)) 433 if (SvROK (coro))
319 coro = SvRV (coro); 434 coro = SvRV (coro);
320 435
321 if (SvTYPE (coro) != SVt_PVHV) 436 if (expect_false (SvTYPE (coro) != SVt_PVHV))
322 croak ("Coro::State object required"); 437 croak ("Coro::State object required");
323 438
324 stash = SvSTASH (coro); 439 stash = SvSTASH (coro);
325 if (stash != coro_stash && stash != coro_state_stash) 440 if (expect_false (stash != coro_stash && stash != coro_state_stash))
326 { 441 {
327 /* very slow, but rare, check */ 442 /* very slow, but rare, check */
328 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 443 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329 croak ("Coro::State object required"); 444 croak ("Coro::State object required");
330 } 445 }
331 446
332 mg = CORO_MAGIC (coro); 447 mg = CORO_MAGIC_state (coro);
333 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
334} 449}
335 450
336#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337 452
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
338/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
339static void 458static void
340get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
341{ 460{
342 MAGIC *mg = CORO_MAGIC (cv); 461 MAGIC *mg = CORO_MAGIC_cv (cv);
343 AV *av; 462 AV *av;
344 463
345 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 464 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 465 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347 else 466 else
348 { 467 {
349#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
350 /* this is probably cleaner, but also slower? */ 469 /* this is probably cleaner? but also slower! */
470 /* in practise, it seems to be less stable */
351 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
352 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
353 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
354 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
355#else 475#else
356 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
359} 479}
360 480
361static void 481static void
362put_padlist (pTHX_ CV *cv) 482put_padlist (pTHX_ CV *cv)
363{ 483{
364 MAGIC *mg = CORO_MAGIC (cv); 484 MAGIC *mg = CORO_MAGIC_cv (cv);
365 AV *av; 485 AV *av;
366 486
367 if (!mg) 487 if (expect_false (!mg))
368 { 488 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371 mg->mg_virtual = &vtbl_coro;
372 mg->mg_obj = (SV *)newAV ();
373 }
374 489
375 av = (AV *)mg->mg_obj; 490 av = (AV *)mg->mg_obj;
376 491
377 if (AvFILLp (av) >= AvMAX (av)) 492 if (expect_false (AvFILLp (av) >= AvMAX (av)))
378 av_extend (av, AvMAX (av) + 1); 493 av_extend (av, AvMAX (av) + 1);
379 494
380 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 495 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381} 496}
382 497
383/** load & save, init *******************************************************/ 498/** load & save, init *******************************************************/
384 499
385static void 500static void
386load_perl (pTHX_ Coro__State c) 501load_perl (pTHX_ Coro__State c)
387{ 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
388#define VAR(name,type) PL_ ## name = c->name; 513 #define VAR(name,type) PL_ ## name = slot->name;
389# include "state.h" 514 # include "state.h"
390#undef VAR 515 #undef VAR
391
392 GvSV (PL_defgv) = c->defsv;
393 GvAV (PL_defgv) = c->defav;
394 GvSV (PL_errgv) = c->errsv;
395 PL_defoutgv = c->deffh;
396 PL_rs = c->irssv;
397 GvSV (irsgv) = c->irssv_sv;
398 516
399 { 517 {
400 dSP; 518 dSP;
519
401 CV *cv; 520 CV *cv;
402 521
403 /* now do the ugly restore mess */ 522 /* now do the ugly restore mess */
404 while ((cv = (CV *)POPs)) 523 while (expect_true (cv = (CV *)POPs))
405 { 524 {
406 put_padlist (aTHX_ cv); /* mark this padlist as available */ 525 put_padlist (aTHX_ cv); /* mark this padlist as available */
407 CvDEPTH (cv) = PTR2IV (POPs); 526 CvDEPTH (cv) = PTR2IV (POPs);
408 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
409 } 528 }
410 529
411 PUTBACK; 530 PUTBACK;
412 } 531 }
532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
413} 535}
414 536
415static void 537static void
416save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
417{ 539{
540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
418 { 543 {
419 dSP; 544 dSP;
420 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
421 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
422 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
428 553
429 XPUSHs (Nullsv); 554 XPUSHs (Nullsv);
430 /* this loop was inspired by pp_caller */ 555 /* this loop was inspired by pp_caller */
431 for (;;) 556 for (;;)
432 { 557 {
433 while (cxix >= 0) 558 while (expect_true (cxix >= 0))
434 { 559 {
435 PERL_CONTEXT *cx = &ccstk[cxix--]; 560 PERL_CONTEXT *cx = &ccstk[cxix--];
436 561
437 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 562 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
438 { 563 {
439 CV *cv = cx->blk_sub.cv; 564 CV *cv = cx->blk_sub.cv;
440 565
441 if (CvDEPTH (cv)) 566 if (expect_true (CvDEPTH (cv)))
442 { 567 {
443 EXTEND (SP, 3); 568 EXTEND (SP, 3);
444 PUSHs ((SV *)CvPADLIST (cv)); 569 PUSHs ((SV *)CvPADLIST (cv));
445 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 570 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
446 PUSHs ((SV *)cv); 571 PUSHs ((SV *)cv);
447 572
448 CvDEPTH (cv) = 0; 573 CvDEPTH (cv) = 0;
449 get_padlist (aTHX_ cv); 574 get_padlist (aTHX_ cv);
450 } 575 }
451 } 576 }
452 } 577 }
453 578
454 if (top_si->si_type == PERLSI_MAIN) 579 if (expect_true (top_si->si_type == PERLSI_MAIN))
455 break; 580 break;
456 581
457 top_si = top_si->si_prev; 582 top_si = top_si->si_prev;
458 ccstk = top_si->si_cxstack; 583 ccstk = top_si->si_cxstack;
459 cxix = top_si->si_cxix; 584 cxix = top_si->si_cxix;
460 } 585 }
461 586
462 PUTBACK; 587 PUTBACK;
463 } 588 }
464 589
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
465 c->defav = GvAV (PL_defgv); 607 slot->defav = GvAV (PL_defgv);
466 c->defsv = DEFSV; 608 slot->defsv = DEFSV;
467 c->errsv = ERRSV; 609 slot->errsv = ERRSV;
468 c->deffh = PL_defoutgv;
469 c->irssv = PL_rs;
470 c->irssv_sv = GvSV (irsgv); 610 slot->irsgv = GvSV (irsgv);
471 611
472#define VAR(name,type)c->name = PL_ ## name; 612 #define VAR(name,type) slot->name = PL_ ## name;
473# include "state.h" 613 # include "state.h"
474#undef VAR 614 #undef VAR
615 }
475} 616}
476 617
477/* 618/*
478 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
479 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
480 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
481 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
482 */ 623 */
483#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
484# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
485#else 626#else
486static void 627static void
487coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
488{ 629{
489 PL_curstackinfo = new_stackinfo(64, 6); 630 PL_curstackinfo = new_stackinfo(32, 8);
490 PL_curstackinfo->si_type = PERLSI_MAIN; 631 PL_curstackinfo->si_type = PERLSI_MAIN;
491 PL_curstack = PL_curstackinfo->si_stack; 632 PL_curstack = PL_curstackinfo->si_stack;
492 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 633 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
493 634
494 PL_stack_base = AvARRAY(PL_curstack); 635 PL_stack_base = AvARRAY(PL_curstack);
495 PL_stack_sp = PL_stack_base; 636 PL_stack_sp = PL_stack_base;
496 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 637 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
497 638
498 New(50,PL_tmps_stack,64,SV*); 639 New(50,PL_tmps_stack,32,SV*);
499 PL_tmps_floor = -1; 640 PL_tmps_floor = -1;
500 PL_tmps_ix = -1; 641 PL_tmps_ix = -1;
501 PL_tmps_max = 64; 642 PL_tmps_max = 32;
502 643
503 New(54,PL_markstack,16,I32); 644 New(54,PL_markstack,16,I32);
504 PL_markstack_ptr = PL_markstack; 645 PL_markstack_ptr = PL_markstack;
505 PL_markstack_max = PL_markstack + 16; 646 PL_markstack_max = PL_markstack + 16;
506 647
507#ifdef SET_MARK_OFFSET 648#ifdef SET_MARK_OFFSET
508 SET_MARK_OFFSET; 649 SET_MARK_OFFSET;
509#endif 650#endif
510 651
511 New(54,PL_scopestack,16,I32); 652 New(54,PL_scopestack,8,I32);
512 PL_scopestack_ix = 0; 653 PL_scopestack_ix = 0;
513 PL_scopestack_max = 16; 654 PL_scopestack_max = 8;
514 655
515 New(54,PL_savestack,64,ANY); 656 New(54,PL_savestack,24,ANY);
516 PL_savestack_ix = 0; 657 PL_savestack_ix = 0;
517 PL_savestack_max = 64; 658 PL_savestack_max = 24;
518 659
519#if !PERL_VERSION_ATLEAST (5,9,0) 660#if !PERL_VERSION_ATLEAST (5,10,0)
520 New(54,PL_retstack,4,OP*); 661 New(54,PL_retstack,4,OP*);
521 PL_retstack_ix = 0; 662 PL_retstack_ix = 0;
522 PL_retstack_max = 4; 663 PL_retstack_max = 4;
523#endif 664#endif
524} 665}
… …
526 667
527/* 668/*
528 * destroy the stacks, the callchain etc... 669 * destroy the stacks, the callchain etc...
529 */ 670 */
530static void 671static void
531coro_destroy_stacks (pTHX) 672coro_destruct_stacks (pTHX)
532{ 673{
533 while (PL_curstackinfo->si_next) 674 while (PL_curstackinfo->si_next)
534 PL_curstackinfo = PL_curstackinfo->si_next; 675 PL_curstackinfo = PL_curstackinfo->si_next;
535 676
536 while (PL_curstackinfo) 677 while (PL_curstackinfo)
… …
547 688
548 Safefree (PL_tmps_stack); 689 Safefree (PL_tmps_stack);
549 Safefree (PL_markstack); 690 Safefree (PL_markstack);
550 Safefree (PL_scopestack); 691 Safefree (PL_scopestack);
551 Safefree (PL_savestack); 692 Safefree (PL_savestack);
552#if !PERL_VERSION_ATLEAST (5,9,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
553 Safefree (PL_retstack); 694 Safefree (PL_retstack);
554#endif 695#endif
555} 696}
556 697
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
557static size_t 707static size_t
558coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
559{ 709{
560 size_t rss = sizeof (coro); 710 size_t rss = sizeof (*coro);
561 711
562 if (coro->mainstack) 712 if (coro->mainstack)
563 { 713 {
564 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
565 { 715 {
566 #define VAR(name,type)coro->name = PL_ ## name; 716 #define SYM(sym) PL_ ## sym
567 # include "state.h" 717 CORO_RSS;
568 #undef VAR 718 #undef SYM
569 } 719 }
720 else
721 {
722 #define SYM(sym) coro->slot->sym
723 CORO_RSS;
724 #undef SYM
725 }
726 }
570 727
571 rss += sizeof (coro->curstackinfo); 728 return rss;
572 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 729}
573 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
575 rss += coro->tmps_max * sizeof (SV *);
576 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
577 rss += coro->scopestack_max * sizeof (I32);
578 rss += coro->savestack_max * sizeof (ANY);
579 730
580#if !PERL_VERSION_ATLEAST (5,9,0) 731/** coroutine stack handling ************************************************/
581 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)
582#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 == '_')
583 } 759 {
760 SV **svp = 0;
584 761
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{
585 return rss; 833 return 0;
586} 834}
587 835
588/** coroutine stack handling ************************************************/ 836static UNOP coro_setup_op;
589 837
590static void 838static void NOINLINE /* noinline to keep it out of the transfer fast path */
591coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
592{ 840{
593 /* 841 /*
594 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
595 */ 843 */
… …
598 PL_runops = RUNOPS_DEFAULT; 846 PL_runops = RUNOPS_DEFAULT;
599 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
600 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
601 PL_comppad = 0; 849 PL_comppad = 0;
602 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
603 PL_localizing = 0; 852 PL_localizing = 0;
604 PL_dirty = 0; 853 PL_dirty = 0;
605 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);
606 862
607 GvSV (PL_defgv) = NEWSV (0, 0); 863 GvSV (PL_defgv) = newSV (0);
608 GvAV (PL_defgv) = coro->args; coro->args = 0; 864 GvAV (PL_defgv) = coro->args; coro->args = 0;
609 GvSV (PL_errgv) = NEWSV (0, 0); 865 GvSV (PL_errgv) = newSV (0);
610 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);
611 PL_rs = newSVsv (GvSV (irsgv)); 867 PL_rs = newSVsv (GvSV (irsgv));
612 868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
613 {
614 IO *io = newIO ();
615 PL_defoutgv = newGVgen ("Coro");
616 GvIOp(PL_defoutgv) = io;
617 IoTYPE (io) = IoTYPE_WRONLY;
618 IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
619 IoFLAGS (io) |= IOf_FLUSH;
620 }
621 869
622 { 870 {
623 dSP; 871 dSP;
624 LOGOP myop; 872 UNOP myop;
625 873
626 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
627 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
628 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
629 878
630 PUSHMARK (SP); 879 PUSHMARK (SP);
631 XPUSHs (av_shift (GvAV (PL_defgv))); 880 PUSHs ((SV *)coro->startcv);
632 PUTBACK; 881 PUTBACK;
633 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
634 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635 SPAGAIN;
636 } 884 }
637 885
638 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
639} 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 */
640 891
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
641static void 904static void
642coro_destroy (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
643{ 906{
644 if (!IN_DESTRUCT) 907 if (!IN_DESTRUCT)
645 { 908 {
646 /* restore all saved variables and stuff */ 909 /* restore all saved variables and stuff */
647 LEAVE_SCOPE (0); 910 LEAVE_SCOPE (0);
… …
663 SvREFCNT_dec (GvSV (PL_errgv)); 926 SvREFCNT_dec (GvSV (PL_errgv));
664 SvREFCNT_dec (PL_defoutgv); 927 SvREFCNT_dec (PL_defoutgv);
665 SvREFCNT_dec (PL_rs); 928 SvREFCNT_dec (PL_rs);
666 SvREFCNT_dec (GvSV (irsgv)); 929 SvREFCNT_dec (GvSV (irsgv));
667 930
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933
668 SvREFCNT_dec (coro->defoutgv); 934 SvREFCNT_dec (coro->saved_deffh);
669 //SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
670 938
671 coro_destroy_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
672} 940}
673 941
674static void 942INLINE void
675free_coro_mortal (pTHX) 943free_coro_mortal (pTHX)
676{ 944{
677 if (coro_mortal) 945 if (expect_true (coro_mortal))
678 { 946 {
679 SvREFCNT_dec (coro_mortal); 947 SvREFCNT_dec (coro_mortal);
680 coro_mortal = 0; 948 coro_mortal = 0;
681 } 949 }
682} 950}
… …
684static int 952static int
685runops_trace (pTHX) 953runops_trace (pTHX)
686{ 954{
687 COP *oldcop = 0; 955 COP *oldcop = 0;
688 int oldcxix = -2; 956 int oldcxix = -2;
689 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 */
690 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
691 959
692 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
693 { 961 {
694 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
711 bot = PL_stack_base + cx->blk_oldsp + 1; 979 bot = PL_stack_base + cx->blk_oldsp + 1;
712 top = cx->blk_gimme == G_ARRAY ? SP + 1 980 top = cx->blk_gimme == G_ARRAY ? SP + 1
713 : cx->blk_gimme == G_SCALAR ? bot + 1 981 : cx->blk_gimme == G_SCALAR ? bot + 1
714 : bot; 982 : bot;
715 983
984 av_extend (av, top - bot);
716 while (bot < top) 985 while (bot < top)
717 av_push (av, SvREFCNT_inc (*bot++)); 986 av_push (av, SvREFCNT_inc_NN (*bot++));
718 987
719 PL_runops = RUNOPS_DEFAULT; 988 PL_runops = RUNOPS_DEFAULT;
720 ENTER; 989 ENTER;
721 SAVETMPS; 990 SAVETMPS;
722 EXTEND (SP, 3); 991 EXTEND (SP, 3);
… …
760 SAVETMPS; 1029 SAVETMPS;
761 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
762 PUSHMARK (SP); 1031 PUSHMARK (SP);
763 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
764 PUSHs (fullname); 1033 PUSHs (fullname);
765 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);
766 PUTBACK; 1035 PUTBACK;
767 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);
768 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);
769 SPAGAIN; 1038 SPAGAIN;
770 FREETMPS; 1039 FREETMPS;
… …
802 1071
803 TAINT_NOT; 1072 TAINT_NOT;
804 return 0; 1073 return 0;
805} 1074}
806 1075
807/* inject a fake call to Coro::State::_cctx_init into the execution */ 1076static struct coro_cctx *cctx_ssl_cctx;
808/* _cctx_init should be careful, as it could be called at almost any time */ 1077static struct CoroSLF cctx_ssl_frame;
809/* 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 */
810static void NOINLINE 1095static void NOINLINE
811prepare_cctx (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
812{ 1097{
813 dSP;
814 LOGOP myop;
815
816 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
817 1099
818 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
819 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
820 1102
821 Zero (&myop, 1, LOGOP); 1103 /* we already must be executing an SLF op, there is no other valid way
822 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
823 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));
824 1107
825 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
826 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
827 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1110 cctx_ssl_frame = slf_frame;
828 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
829 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
830 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
831 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1114}
832 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);
833} 1121}
834 1122
835/* 1123/*
836 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
837 */ 1125 */
838static void 1126static void
839coro_run (void *arg) 1127cctx_run (void *arg)
840{ 1128{
1129#ifdef USE_ITHREADS
1130# if CORO_PTHREAD
1131 PERL_SET_CONTEXT (coro_thx);
1132# endif
1133#endif
1134 {
841 dTHX; 1135 dTHX;
842 1136
843 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1137 /* normally we would need to skip the entersub here */
844 UNLOCK; 1138 /* not doing so will re-execute it, which is exactly what we want */
845
846 /* we now skip the entersub that lead to transfer() */
847 PL_op = PL_op->op_next; 1139 /* PL_nop = PL_nop->op_next */
848 1140
849 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
850 prepare_cctx (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
851 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
852 /* 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 */
853 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
854 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
855
856 /* 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 /*
857 * 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
858 * 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)
859 * 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
860 * bootstrap-time "top" top_env, as we cannot restore the "main" 1159 * bootstrap-time "top" top_env, as we cannot restore the "main"
861 * coroutine as Coro has no such concept 1160 * coroutine as Coro has no such concept
862 */ 1161 */
863 PL_top_env = main_top_env; 1162 PL_top_env = main_top_env;
864 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 }
865} 1165}
866 1166
867static coro_cctx * 1167static coro_cctx *
868cctx_new () 1168cctx_new ()
869{ 1169{
870 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 ();
871 void *stack_start; 1199 void *stack_start;
872 size_t stack_size; 1200 size_t stack_size;
873 1201
874 ++cctx_count;
875
876 Newz (0, cctx, 1, coro_cctx);
877
878#if HAVE_MMAP 1202#if HAVE_MMAP
879
880 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;
881 /* mmap supposedly does allocate-on-write for us */ 1204 /* mmap supposedly does allocate-on-write for us */
882 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);
883 1206
884 if (cctx->sptr != (void *)-1) 1207 if (cctx->sptr != (void *)-1)
885 { 1208 {
886# if CORO_STACKGUARD 1209 #if CORO_STACKGUARD
887 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
888# endif 1211 #endif
889 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
890 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
891 cctx->flags |= CC_MAPPED; 1214 cctx->flags |= CC_MAPPED;
892 } 1215 }
893 else 1216 else
894#endif 1217#endif
895 { 1218 {
896 cctx->ssize = coro_stacksize * (long)sizeof (long); 1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
897 New (0, cctx->sptr, coro_stacksize, long); 1220 New (0, cctx->sptr, cctx_stacksize, long);
898 1221
899 if (!cctx->sptr) 1222 if (!cctx->sptr)
900 { 1223 {
901 perror ("FATAL: unable to allocate stack for coroutine"); 1224 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
902 _exit (EXIT_FAILURE); 1225 _exit (EXIT_FAILURE);
903 } 1226 }
904 1227
905 stack_start = cctx->sptr; 1228 stack_start = cctx->sptr;
906 stack_size = cctx->ssize; 1229 stack_size = cctx->ssize;
907 } 1230 }
908 1231
909 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
910 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);
911 1237
912 return cctx; 1238 return cctx;
913} 1239}
914 1240
915static void 1241static void
… …
917{ 1243{
918 if (!cctx) 1244 if (!cctx)
919 return; 1245 return;
920 1246
921 --cctx_count; 1247 --cctx_count;
1248 coro_destroy (&cctx->cctx);
922 1249
1250 /* coro_transfer creates new, empty cctx's */
1251 if (cctx->sptr)
1252 {
923#if CORO_USE_VALGRIND 1253 #if CORO_USE_VALGRIND
924 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
925#endif 1261#endif
926
927#if HAVE_MMAP
928 if (cctx->flags & CC_MAPPED)
929 munmap (cctx->sptr, cctx->ssize);
930 else
931#endif
932 Safefree (cctx->sptr); 1262 Safefree (cctx->sptr);
1263 }
933 1264
934 Safefree (cctx); 1265 Safefree (cctx);
935} 1266}
1267
1268/* wether this cctx should be destructed */
1269#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
936 1270
937static coro_cctx * 1271static coro_cctx *
938cctx_get (pTHX) 1272cctx_get (pTHX)
939{ 1273{
940 while (cctx_first) 1274 while (expect_true (cctx_first))
941 { 1275 {
942 coro_cctx *cctx = cctx_first; 1276 coro_cctx *cctx = cctx_first;
943 cctx_first = cctx->next; 1277 cctx_first = cctx->next;
944 --cctx_idle; 1278 --cctx_idle;
945 1279
946 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1280 if (expect_true (!CCTX_EXPIRED (cctx)))
947 return cctx; 1281 return cctx;
948 1282
949 cctx_destroy (cctx); 1283 cctx_destroy (cctx);
950 } 1284 }
951 1285
952 return cctx_new (); 1286 return cctx_new_run ();
953} 1287}
954 1288
955static void 1289static void
956cctx_put (coro_cctx *cctx) 1290cctx_put (coro_cctx *cctx)
957{ 1291{
1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1293
958 /* free another cctx if overlimit */ 1294 /* free another cctx if overlimit */
959 if (cctx_idle >= MAX_IDLE_CCTX) 1295 if (expect_false (cctx_idle >= cctx_max_idle))
960 { 1296 {
961 coro_cctx *first = cctx_first; 1297 coro_cctx *first = cctx_first;
962 cctx_first = first->next; 1298 cctx_first = first->next;
963 --cctx_idle; 1299 --cctx_idle;
964 1300
… …
970 cctx_first = cctx; 1306 cctx_first = cctx;
971} 1307}
972 1308
973/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
974 1310
975static void NOINLINE 1311static void
976transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
977{ 1313{
978 if (prev != next) 1314 /* TODO: throwing up here is considered harmful */
1315
1316 if (expect_true (prev != next))
979 { 1317 {
980 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
981 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,");
982 1320
983 if (next->flags & CF_RUNNING) 1321 if (expect_false (next->flags & CF_RUNNING))
984 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,");
985 1323
986 if (next->flags & CF_DESTROYED) 1324 if (expect_false (next->flags & CF_DESTROYED))
987 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,");
988 1326
1327#if !PERL_VERSION_ATLEAST (5,10,0)
989 if (PL_lex_state != LEX_NOTPARSING) 1328 if (expect_false (PL_lex_state != LEX_NOTPARSING))
990 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
991 } 1331 }
992} 1332}
993 1333
994/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
995static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
996transfer (pTHX_ struct coro *prev, struct coro *next) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
997{ 1337{
998 dSTACKLEVEL; 1338 dSTACKLEVEL;
999 1339
1000 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
1001 if (!next) 1341 if (expect_false (!next))
1002 { 1342 {
1003 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1004 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 */
1005 } 1345 }
1006 else if (prev != next) 1346 else if (expect_true (prev != next))
1007 { 1347 {
1008 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
1009 1349
1010 if (prev->flags & CF_NEW) 1350 if (expect_false (prev->flags & CF_NEW))
1011 { 1351 {
1012 /* create a new empty context */ 1352 /* create a new empty/source context */
1013 Newz (0, prev->cctx, 1, coro_cctx); 1353 prev->cctx = cctx_new_empty ();
1014 prev->flags &= ~CF_NEW; 1354 prev->flags &= ~CF_NEW;
1015 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1016 } 1356 }
1017 1357
1018 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1019 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1020 1360
1021 LOCK; 1361 /* first get rid of the old state */
1362 save_perl (aTHX_ prev);
1022 1363
1023 if (next->flags & CF_NEW) 1364 if (expect_false (next->flags & CF_NEW))
1024 { 1365 {
1025 /* need to start coroutine */ 1366 /* need to start coroutine */
1026 next->flags &= ~CF_NEW; 1367 next->flags &= ~CF_NEW;
1027 /* first get rid of the old state */
1028 save_perl (aTHX_ prev);
1029 /* setup coroutine call */ 1368 /* setup coroutine call */
1030 coro_setup (aTHX_ next); 1369 coro_setup (aTHX_ next);
1031 } 1370 }
1032 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 ))
1033 { 1382 {
1034 /* coroutine already started */
1035 save_perl (aTHX_ prev);
1036 load_perl (aTHX_ next);
1037 }
1038
1039 prev__cctx = prev->cctx;
1040
1041 /* possibly "free" the cctx */
1042 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1043 {
1044 /* 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 */
1045 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));
1046 1385
1047 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);
1048 1393
1049 cctx_put (prev__cctx); 1394 cctx_put (prev__cctx);
1050 } 1395 }
1051 1396
1052 ++next->usecount; 1397 ++next->usecount;
1053 1398
1054 if (!next->cctx) 1399 if (expect_true (!next->cctx))
1055 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1056 1401
1057 if (prev__cctx != next->cctx) 1402 if (expect_false (prev__cctx != next->cctx))
1058 { 1403 {
1059 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1060 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
1061 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1062 } 1407 }
1063 1408
1064 free_coro_mortal (aTHX); 1409 transfer_tail (aTHX);
1065 UNLOCK;
1066 } 1410 }
1067} 1411}
1068 1412
1069struct transfer_args
1070{
1071 struct coro *prev, *next;
1072};
1073
1074#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1075#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1076 1415
1077/** high level stuff ********************************************************/ 1416/** high level stuff ********************************************************/
1078 1417
1079static int 1418static int
1080coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1081{ 1420{
1082 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1083 return 0; 1422 return 0;
1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1084 1426
1085 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1086 1428
1087 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1088 { 1430 {
1089 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1090 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1091 LOCK;
1092 --coro_nready; 1433 --coro_nready;
1093 UNLOCK;
1094 } 1434 }
1095 else 1435 else
1096 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 */
1097 1437
1098 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1099 { 1439 {
1100 struct coro temp; 1440 struct coro temp;
1101 1441
1102 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1103 croak ("FATAL: tried to destroy currently running coroutine");
1104 1443
1105 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1106 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1107 1446
1108 coro_destroy (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
1109 1448
1110 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1449 load_perl (aTHX_ &temp);
1111 1450
1112 coro->mainstack = 0; 1451 coro->slot = 0;
1113 } 1452 }
1114 1453
1115 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1116 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1117 1458
1118 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1119 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1120 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1121 1462
… …
1159# define MGf_DUP 0 1500# define MGf_DUP 0
1160#endif 1501#endif
1161}; 1502};
1162 1503
1163static void 1504static void
1164prepare_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)
1165{ 1506{
1166 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1167 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1168 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1169} 1510}
1170 1511
1171static void 1512static void
1172api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1173{ 1514{
1174 dTHX;
1175 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1176 1516
1177 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1178 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);
1179} 1542}
1180 1543
1181/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1182 1545
1183static void 1546INLINE void
1184coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1185{ 1548{
1186 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));
1187} 1550}
1188 1551
1189static SV * 1552INLINE SV *
1190coro_deq (pTHX_ int min_prio) 1553coro_deq (pTHX)
1191{ 1554{
1192 int prio = PRIO_MAX - PRIO_MIN; 1555 int prio;
1193 1556
1194 min_prio -= PRIO_MIN;
1195 if (min_prio < 0)
1196 min_prio = 0;
1197
1198 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1199 if (AvFILLp (coro_ready [prio]) >= 0) 1558 if (AvFILLp (coro_ready [prio]) >= 0)
1200 return av_shift (coro_ready [prio]); 1559 return av_shift (coro_ready [prio]);
1201 1560
1202 return 0; 1561 return 0;
1203} 1562}
1204 1563
1205static int 1564static int
1206api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1207{ 1566{
1208 dTHX;
1209 struct coro *coro; 1567 struct coro *coro;
1568 SV *sv_hook;
1569 void (*xs_hook)(void);
1210 1570
1211 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
1212 coro_sv = SvRV (coro_sv); 1572 coro_sv = SvRV (coro_sv);
1213 1573
1214 coro = SvSTATE (coro_sv); 1574 coro = SvSTATE (coro_sv);
… …
1216 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1217 return 0; 1577 return 0;
1218 1578
1219 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1220 1580
1221 LOCK; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1222 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1583
1584 coro_enq (aTHX_ coro);
1223 ++coro_nready; 1585 ++coro_nready;
1224 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 ();
1225 1604
1226 return 1; 1605 return 1;
1227} 1606}
1228 1607
1229static int 1608static int
1230api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1231{ 1610{
1232 dTHX;
1233 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1234} 1612}
1235 1613
1236static void 1614INLINE void
1237prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1238{ 1616{
1239 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1240 1618
1241 for (;;) 1619 for (;;)
1242 { 1620 {
1243 LOCK;
1244 next_sv = coro_deq (aTHX_ PRIO_MIN); 1621 next_sv = coro_deq (aTHX);
1245 1622
1246 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1247 if (!next_sv) 1624 if (expect_false (!next_sv))
1248 { 1625 {
1249 dSP; 1626 dSP;
1250 UNLOCK;
1251 1627
1252 ENTER; 1628 ENTER;
1253 SAVETMPS; 1629 SAVETMPS;
1254 1630
1255 PUSHMARK (SP); 1631 PUSHMARK (SP);
1256 PUTBACK; 1632 PUTBACK;
1257 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1258 1634
1259 FREETMPS; 1635 FREETMPS;
1260 LEAVE; 1636 LEAVE;
1261 continue; 1637 continue;
1262 } 1638 }
1263 1639
1264 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1265 1641
1266 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1267 if (ta->next->flags & CF_DESTROYED) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1268 { 1644 {
1269 UNLOCK;
1270 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1271 /* coro_nready is already taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1272 continue; 1647 continue;
1273 } 1648 }
1274 1649
1275 --coro_nready; 1650 --coro_nready;
1276 UNLOCK;
1277 break; 1651 break;
1278 } 1652 }
1279 1653
1280 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1281 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1282 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1283 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1284 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));
1285 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1286 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1287 1661
1288 LOCK;
1289 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1290 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1291 UNLOCK;
1292} 1664}
1293 1665
1294static void 1666INLINE void
1295prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1296{ 1668{
1297 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1298 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1299} 1671}
1300 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
1301static int 1696static int
1302prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1303{ 1698{
1304 if (coro_nready) 1699 struct coro_transfer_args ta;
1305 { 1700
1306 SV *prev = SvRV (coro_current);
1307 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1308 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1309 return 1; 1706 return 1;
1310 } 1707 }
1311 else 1708 else
1312 return 0; 1709 return 0;
1313} 1710}
1314 1711
1315static void
1316api_schedule (void)
1317{
1318 dTHX;
1319 struct transfer_args ta;
1320
1321 prepare_schedule (aTHX_ &ta);
1322 TRANSFER (ta);
1323}
1324
1325static int 1712static int
1326api_cede (void) 1713api_cede_notself (pTHX)
1327{ 1714{
1328 dTHX; 1715 if (coro_nready)
1716 {
1329 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1330 1718
1331 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1332
1333 if (ta.prev != ta.next)
1334 {
1335 TRANSFER (ta); 1720 TRANSFER (ta, 1);
1336 return 1; 1721 return 1;
1337 } 1722 }
1338 else 1723 else
1339 return 0; 1724 return 0;
1340} 1725}
1341 1726
1342static int 1727static void
1343api_cede_notself (void)
1344{
1345 dTHX;
1346 struct transfer_args ta;
1347
1348 if (prepare_cede_notself (aTHX_ &ta))
1349 {
1350 TRANSFER (ta);
1351 return 1;
1352 }
1353 else
1354 return 0;
1355}
1356
1357static void
1358api_trace (SV *coro_sv, int flags) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1359{ 1729{
1360 dTHX;
1361 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1362 1731
1363 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1364 { 1733 {
1365 if (!coro->cctx) 1734 if (!coro->cctx)
1366 coro->cctx = cctx_new (); 1735 coro->cctx = cctx_new_run ();
1367 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1368 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1369 1738
1370 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1371 } 1740 }
1372 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1373 { 1742 {
1374 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1743 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1375 1744
1376 if (coro->flags & CF_RUNNING) 1745 if (coro->flags & CF_RUNNING)
1377 PL_runops = RUNOPS_DEFAULT; 1746 PL_runops = RUNOPS_DEFAULT;
1378 else 1747 else
1379 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 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1769
1770 {
1771 dSP;
1772 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1773 PUTBACK;
1380 } 1774 }
1775
1776 SvREFCNT_dec (GvAV (PL_defgv));
1777 GvAV (PL_defgv) = coro->invoke_av;
1778 coro->invoke_av = 0;
1779
1780 return 0;
1781 }
1381} 1782}
1783
1784static void
1785slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1786{
1787 HV *hv = (HV *)SvRV (coro_current);
1788 struct coro *coro = SvSTATE_hv ((SV *)hv);
1789
1790 if (expect_true (coro->saved_deffh))
1791 {
1792 /* subsequent iteration */
1793 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1794 coro->saved_deffh = 0;
1795
1796 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1797 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1798 {
1799 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1800 coro->invoke_av = newAV ();
1801
1802 frame->prepare = prepare_nop;
1803 }
1804 else
1805 {
1806 av_clear (GvAV (PL_defgv));
1807 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1808
1809 coro->prio = 0;
1810
1811 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1812 api_trace (aTHX_ coro_current, 0);
1813
1814 frame->prepare = prepare_schedule;
1815 av_push (av_async_pool, SvREFCNT_inc (hv));
1816 }
1817 }
1818 else
1819 {
1820 /* first iteration, simply fall through */
1821 frame->prepare = prepare_nop;
1822 }
1823
1824 frame->check = slf_check_pool_handler;
1825 frame->data = (void *)coro;
1826}
1827
1828/*****************************************************************************/
1829/* rouse callback */
1830
1831#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1832
1833static void
1834coro_rouse_callback (pTHX_ CV *cv)
1835{
1836 dXSARGS;
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1840 {
1841 /* first call, set args */
1842 AV *av = newAV ();
1843 SV *coro = SvRV (data);
1844
1845 SvRV_set (data, (SV *)av);
1846 api_ready (aTHX_ coro);
1847 SvREFCNT_dec (coro);
1848
1849 /* better take a full copy of the arguments */
1850 while (items--)
1851 av_store (av, items, newSVsv (ST (items)));
1852 }
1853
1854 XSRETURN_EMPTY;
1855}
1856
1857static int
1858slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1859{
1860 SV *data = (SV *)frame->data;
1861
1862 if (CORO_THROW)
1863 return 0;
1864
1865 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1866 return 1;
1867
1868 /* now push all results on the stack */
1869 {
1870 dSP;
1871 AV *av = (AV *)SvRV (data);
1872 int i;
1873
1874 EXTEND (SP, AvFILLp (av) + 1);
1875 for (i = 0; i <= AvFILLp (av); ++i)
1876 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1877
1878 /* we have stolen the elements, so ste length to zero and free */
1879 AvFILLp (av) = -1;
1880 av_undef (av);
1881
1882 PUTBACK;
1883 }
1884
1885 return 0;
1886}
1887
1888static void
1889slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1890{
1891 SV *cb;
1892
1893 if (items)
1894 cb = arg [0];
1895 else
1896 {
1897 struct coro *coro = SvSTATE_current;
1898
1899 if (!coro->rouse_cb)
1900 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1901
1902 cb = sv_2mortal (coro->rouse_cb);
1903 coro->rouse_cb = 0;
1904 }
1905
1906 if (!SvROK (cb)
1907 || SvTYPE (SvRV (cb)) != SVt_PVCV
1908 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1909 croak ("Coro::rouse_wait called with illegal callback argument,");
1910
1911 {
1912 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1913 SV *data = (SV *)GENSUB_ARG;
1914
1915 frame->data = (void *)data;
1916 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1917 frame->check = slf_check_rouse_wait;
1918 }
1919}
1920
1921static SV *
1922coro_new_rouse_cb (pTHX)
1923{
1924 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = SvSTATE_hv (hv);
1926 SV *data = newRV_inc ((SV *)hv);
1927 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1928
1929 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1930 SvREFCNT_dec (data); /* magicext increases the refcount */
1931
1932 SvREFCNT_dec (coro->rouse_cb);
1933 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1934
1935 return cb;
1936}
1937
1938/*****************************************************************************/
1939/* schedule-like-function opcode (SLF) */
1940
1941static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1942static const CV *slf_cv;
1943static SV **slf_argv;
1944static int slf_argc, slf_arga; /* count, allocated */
1945static I32 slf_ax; /* top of stack, for restore */
1946
1947/* this restores the stack in the case we patched the entersub, to */
1948/* recreate the stack frame as perl will on following calls */
1949/* since entersub cleared the stack */
1950static OP *
1951pp_restore (pTHX)
1952{
1953 int i;
1954 SV **SP = PL_stack_base + slf_ax;
1955
1956 PUSHMARK (SP);
1957
1958 EXTEND (SP, slf_argc + 1);
1959
1960 for (i = 0; i < slf_argc; ++i)
1961 PUSHs (sv_2mortal (slf_argv [i]));
1962
1963 PUSHs ((SV *)CvGV (slf_cv));
1964
1965 RETURNOP (slf_restore.op_first);
1966}
1967
1968static void
1969slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1970{
1971 SV **arg = (SV **)slf_frame.data;
1972
1973 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1974}
1975
1976static void
1977slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 if (items != 2)
1980 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1981
1982 frame->prepare = slf_prepare_transfer;
1983 frame->check = slf_check_nop;
1984 frame->data = (void *)arg; /* let's hope it will stay valid */
1985}
1986
1987static void
1988slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 frame->prepare = prepare_schedule;
1991 frame->check = slf_check_nop;
1992}
1993
1994static void
1995slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 frame->prepare = prepare_cede;
1998 frame->check = slf_check_nop;
1999}
2000
2001static void
2002slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2003{
2004 frame->prepare = prepare_cede_notself;
2005 frame->check = slf_check_nop;
2006}
2007
2008/*
2009 * these not obviously related functions are all rolled into one
2010 * function to increase chances that they all will call transfer with the same
2011 * stack offset
2012 * SLF stands for "schedule-like-function".
2013 */
2014static OP *
2015pp_slf (pTHX)
2016{
2017 I32 checkmark; /* mark SP to see how many elements check has pushed */
2018
2019 /* set up the slf frame, unless it has already been set-up */
2020 /* the latter happens when a new coro has been started */
2021 /* or when a new cctx was attached to an existing coroutine */
2022 if (expect_true (!slf_frame.prepare))
2023 {
2024 /* first iteration */
2025 dSP;
2026 SV **arg = PL_stack_base + TOPMARK + 1;
2027 int items = SP - arg; /* args without function object */
2028 SV *gv = *sp;
2029
2030 /* do a quick consistency check on the "function" object, and if it isn't */
2031 /* for us, divert to the real entersub */
2032 if (SvTYPE (gv) != SVt_PVGV
2033 || !GvCV (gv)
2034 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2035 return PL_ppaddr[OP_ENTERSUB](aTHX);
2036
2037 if (!(PL_op->op_flags & OPf_STACKED))
2038 {
2039 /* ampersand-form of call, use @_ instead of stack */
2040 AV *av = GvAV (PL_defgv);
2041 arg = AvARRAY (av);
2042 items = AvFILLp (av) + 1;
2043 }
2044
2045 /* now call the init function, which needs to set up slf_frame */
2046 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2047 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2048
2049 /* pop args */
2050 SP = PL_stack_base + POPMARK;
2051
2052 PUTBACK;
2053 }
2054
2055 /* now that we have a slf_frame, interpret it! */
2056 /* we use a callback system not to make the code needlessly */
2057 /* complicated, but so we can run multiple perl coros from one cctx */
2058
2059 do
2060 {
2061 struct coro_transfer_args ta;
2062
2063 slf_frame.prepare (aTHX_ &ta);
2064 TRANSFER (ta, 0);
2065
2066 checkmark = PL_stack_sp - PL_stack_base;
2067 }
2068 while (slf_frame.check (aTHX_ &slf_frame));
2069
2070 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2071
2072 /* exception handling */
2073 if (expect_false (CORO_THROW))
2074 {
2075 SV *exception = sv_2mortal (CORO_THROW);
2076
2077 CORO_THROW = 0;
2078 sv_setsv (ERRSV, exception);
2079 croak (0);
2080 }
2081
2082 /* return value handling - mostly like entersub */
2083 /* make sure we put something on the stack in scalar context */
2084 if (GIMME_V == G_SCALAR)
2085 {
2086 dSP;
2087 SV **bot = PL_stack_base + checkmark;
2088
2089 if (sp == bot) /* too few, push undef */
2090 bot [1] = &PL_sv_undef;
2091 else if (sp != bot + 1) /* too many, take last one */
2092 bot [1] = *sp;
2093
2094 SP = bot + 1;
2095
2096 PUTBACK;
2097 }
2098
2099 return NORMAL;
2100}
2101
2102static void
2103api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2104{
2105 int i;
2106 SV **arg = PL_stack_base + ax;
2107 int items = PL_stack_sp - arg + 1;
2108
2109 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2110
2111 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2112 && PL_op->op_ppaddr != pp_slf)
2113 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2114
2115 CvFLAGS (cv) |= CVf_SLF;
2116 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2117 slf_cv = cv;
2118
2119 /* we patch the op, and then re-run the whole call */
2120 /* we have to put the same argument on the stack for this to work */
2121 /* and this will be done by pp_restore */
2122 slf_restore.op_next = (OP *)&slf_restore;
2123 slf_restore.op_type = OP_CUSTOM;
2124 slf_restore.op_ppaddr = pp_restore;
2125 slf_restore.op_first = PL_op;
2126
2127 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2128
2129 if (PL_op->op_flags & OPf_STACKED)
2130 {
2131 if (items > slf_arga)
2132 {
2133 slf_arga = items;
2134 free (slf_argv);
2135 slf_argv = malloc (slf_arga * sizeof (SV *));
2136 }
2137
2138 slf_argc = items;
2139
2140 for (i = 0; i < items; ++i)
2141 slf_argv [i] = SvREFCNT_inc (arg [i]);
2142 }
2143 else
2144 slf_argc = 0;
2145
2146 PL_op->op_ppaddr = pp_slf;
2147 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2148
2149 PL_op = (OP *)&slf_restore;
2150}
2151
2152/*****************************************************************************/
2153/* PerlIO::cede */
2154
2155typedef struct
2156{
2157 PerlIOBuf base;
2158 NV next, every;
2159} PerlIOCede;
2160
2161static IV
2162PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2163{
2164 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2165
2166 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2167 self->next = nvtime () + self->every;
2168
2169 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2170}
2171
2172static SV *
2173PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2174{
2175 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2176
2177 return newSVnv (self->every);
2178}
2179
2180static IV
2181PerlIOCede_flush (pTHX_ PerlIO *f)
2182{
2183 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2184 double now = nvtime ();
2185
2186 if (now >= self->next)
2187 {
2188 api_cede (aTHX);
2189 self->next = now + self->every;
2190 }
2191
2192 return PerlIOBuf_flush (aTHX_ f);
2193}
2194
2195static PerlIO_funcs PerlIO_cede =
2196{
2197 sizeof(PerlIO_funcs),
2198 "cede",
2199 sizeof(PerlIOCede),
2200 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2201 PerlIOCede_pushed,
2202 PerlIOBuf_popped,
2203 PerlIOBuf_open,
2204 PerlIOBase_binmode,
2205 PerlIOCede_getarg,
2206 PerlIOBase_fileno,
2207 PerlIOBuf_dup,
2208 PerlIOBuf_read,
2209 PerlIOBuf_unread,
2210 PerlIOBuf_write,
2211 PerlIOBuf_seek,
2212 PerlIOBuf_tell,
2213 PerlIOBuf_close,
2214 PerlIOCede_flush,
2215 PerlIOBuf_fill,
2216 PerlIOBase_eof,
2217 PerlIOBase_error,
2218 PerlIOBase_clearerr,
2219 PerlIOBase_setlinebuf,
2220 PerlIOBuf_get_base,
2221 PerlIOBuf_bufsiz,
2222 PerlIOBuf_get_ptr,
2223 PerlIOBuf_get_cnt,
2224 PerlIOBuf_set_ptrcnt,
2225};
2226
2227/*****************************************************************************/
2228/* Coro::Semaphore & Coro::Signal */
2229
2230static SV *
2231coro_waitarray_new (pTHX_ int count)
2232{
2233 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2234 AV *av = newAV ();
2235 SV **ary;
2236
2237 /* unfortunately, building manually saves memory */
2238 Newx (ary, 2, SV *);
2239 AvALLOC (av) = ary;
2240 /*AvARRAY (av) = ary;*/
2241 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2242 AvMAX (av) = 1;
2243 AvFILLp (av) = 0;
2244 ary [0] = newSViv (count);
2245
2246 return newRV_noinc ((SV *)av);
2247}
2248
2249/* semaphore */
2250
2251static void
2252coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2253{
2254 SV *count_sv = AvARRAY (av)[0];
2255 IV count = SvIVX (count_sv);
2256
2257 count += adjust;
2258 SvIVX (count_sv) = count;
2259
2260 /* now wake up as many waiters as are expected to lock */
2261 while (count > 0 && AvFILLp (av) > 0)
2262 {
2263 SV *cb;
2264
2265 /* swap first two elements so we can shift a waiter */
2266 AvARRAY (av)[0] = AvARRAY (av)[1];
2267 AvARRAY (av)[1] = count_sv;
2268 cb = av_shift (av);
2269
2270 if (SvOBJECT (cb))
2271 {
2272 api_ready (aTHX_ cb);
2273 --count;
2274 }
2275 else if (SvTYPE (cb) == SVt_PVCV)
2276 {
2277 dSP;
2278 PUSHMARK (SP);
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2280 PUTBACK;
2281 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2282 }
2283
2284 SvREFCNT_dec (cb);
2285 }
2286}
2287
2288static void
2289coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2290{
2291 /* call $sem->adjust (0) to possibly wake up some other waiters */
2292 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2293}
2294
2295static int
2296slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2297{
2298 AV *av = (AV *)frame->data;
2299 SV *count_sv = AvARRAY (av)[0];
2300
2301 /* if we are about to throw, don't actually acquire the lock, just throw */
2302 if (CORO_THROW)
2303 return 0;
2304 else if (SvIVX (count_sv) > 0)
2305 {
2306 SvSTATE_current->on_destroy = 0;
2307
2308 if (acquire)
2309 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2310 else
2311 coro_semaphore_adjust (aTHX_ av, 0);
2312
2313 return 0;
2314 }
2315 else
2316 {
2317 int i;
2318 /* if we were woken up but can't down, we look through the whole */
2319 /* waiters list and only add us if we aren't in there already */
2320 /* this avoids some degenerate memory usage cases */
2321
2322 for (i = 1; i <= AvFILLp (av); ++i)
2323 if (AvARRAY (av)[i] == SvRV (coro_current))
2324 return 1;
2325
2326 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2327 return 1;
2328 }
2329}
2330
2331static int
2332slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2333{
2334 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2335}
2336
2337static int
2338slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2339{
2340 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2341}
2342
2343static void
2344slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2345{
2346 AV *av = (AV *)SvRV (arg [0]);
2347
2348 if (SvIVX (AvARRAY (av)[0]) > 0)
2349 {
2350 frame->data = (void *)av;
2351 frame->prepare = prepare_nop;
2352 }
2353 else
2354 {
2355 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2356
2357 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2358 frame->prepare = prepare_schedule;
2359
2360 /* to avoid race conditions when a woken-up coro gets terminated */
2361 /* we arrange for a temporary on_destroy that calls adjust (0) */
2362 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2363 }
2364}
2365
2366static void
2367slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2368{
2369 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2370 frame->check = slf_check_semaphore_down;
2371}
2372
2373static void
2374slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2375{
2376 if (items >= 2)
2377 {
2378 /* callback form */
2379 AV *av = (AV *)SvRV (arg [0]);
2380 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2381
2382 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2383
2384 if (SvIVX (AvARRAY (av)[0]) > 0)
2385 coro_semaphore_adjust (aTHX_ av, 0);
2386
2387 frame->prepare = prepare_nop;
2388 frame->check = slf_check_nop;
2389 }
2390 else
2391 {
2392 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2393 frame->check = slf_check_semaphore_wait;
2394 }
2395}
2396
2397/* signal */
2398
2399static void
2400coro_signal_wake (pTHX_ AV *av, int count)
2401{
2402 SvIVX (AvARRAY (av)[0]) = 0;
2403
2404 /* now signal count waiters */
2405 while (count > 0 && AvFILLp (av) > 0)
2406 {
2407 SV *cb;
2408
2409 /* swap first two elements so we can shift a waiter */
2410 cb = AvARRAY (av)[0];
2411 AvARRAY (av)[0] = AvARRAY (av)[1];
2412 AvARRAY (av)[1] = cb;
2413
2414 cb = av_shift (av);
2415
2416 api_ready (aTHX_ cb);
2417 sv_setiv (cb, 0); /* signal waiter */
2418 SvREFCNT_dec (cb);
2419
2420 --count;
2421 }
2422}
2423
2424static int
2425slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2426{
2427 /* if we are about to throw, also stop waiting */
2428 return SvROK ((SV *)frame->data) && !CORO_THROW;
2429}
2430
2431static void
2432slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 AV *av = (AV *)SvRV (arg [0]);
2435
2436 if (SvIVX (AvARRAY (av)[0]))
2437 {
2438 SvIVX (AvARRAY (av)[0]) = 0;
2439 frame->prepare = prepare_nop;
2440 frame->check = slf_check_nop;
2441 }
2442 else
2443 {
2444 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2445
2446 av_push (av, waiter);
2447
2448 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2449 frame->prepare = prepare_schedule;
2450 frame->check = slf_check_signal_wait;
2451 }
2452}
2453
2454/*****************************************************************************/
2455/* Coro::AIO */
2456
2457#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2458
2459/* helper storage struct */
2460struct io_state
2461{
2462 int errorno;
2463 I32 laststype; /* U16 in 5.10.0 */
2464 int laststatval;
2465 Stat_t statcache;
2466};
2467
2468static void
2469coro_aio_callback (pTHX_ CV *cv)
2470{
2471 dXSARGS;
2472 AV *state = (AV *)GENSUB_ARG;
2473 SV *coro = av_pop (state);
2474 SV *data_sv = newSV (sizeof (struct io_state));
2475
2476 av_extend (state, items - 1);
2477
2478 sv_upgrade (data_sv, SVt_PV);
2479 SvCUR_set (data_sv, sizeof (struct io_state));
2480 SvPOK_only (data_sv);
2481
2482 {
2483 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2484
2485 data->errorno = errno;
2486 data->laststype = PL_laststype;
2487 data->laststatval = PL_laststatval;
2488 data->statcache = PL_statcache;
2489 }
2490
2491 /* now build the result vector out of all the parameters and the data_sv */
2492 {
2493 int i;
2494
2495 for (i = 0; i < items; ++i)
2496 av_push (state, SvREFCNT_inc_NN (ST (i)));
2497 }
2498
2499 av_push (state, data_sv);
2500
2501 api_ready (aTHX_ coro);
2502 SvREFCNT_dec (coro);
2503 SvREFCNT_dec ((AV *)state);
2504}
2505
2506static int
2507slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2508{
2509 AV *state = (AV *)frame->data;
2510
2511 /* if we are about to throw, return early */
2512 /* this does not cancel the aio request, but at least */
2513 /* it quickly returns */
2514 if (CORO_THROW)
2515 return 0;
2516
2517 /* one element that is an RV? repeat! */
2518 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2519 return 1;
2520
2521 /* restore status */
2522 {
2523 SV *data_sv = av_pop (state);
2524 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2525
2526 errno = data->errorno;
2527 PL_laststype = data->laststype;
2528 PL_laststatval = data->laststatval;
2529 PL_statcache = data->statcache;
2530
2531 SvREFCNT_dec (data_sv);
2532 }
2533
2534 /* push result values */
2535 {
2536 dSP;
2537 int i;
2538
2539 EXTEND (SP, AvFILLp (state) + 1);
2540 for (i = 0; i <= AvFILLp (state); ++i)
2541 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2542
2543 PUTBACK;
2544 }
2545
2546 return 0;
2547}
2548
2549static void
2550slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2553 SV *coro_hv = SvRV (coro_current);
2554 struct coro *coro = SvSTATE_hv (coro_hv);
2555
2556 /* put our coroutine id on the state arg */
2557 av_push (state, SvREFCNT_inc_NN (coro_hv));
2558
2559 /* first see whether we have a non-zero priority and set it as AIO prio */
2560 if (coro->prio)
2561 {
2562 dSP;
2563
2564 static SV *prio_cv;
2565 static SV *prio_sv;
2566
2567 if (expect_false (!prio_cv))
2568 {
2569 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2570 prio_sv = newSViv (0);
2571 }
2572
2573 PUSHMARK (SP);
2574 sv_setiv (prio_sv, coro->prio);
2575 XPUSHs (prio_sv);
2576
2577 PUTBACK;
2578 call_sv (prio_cv, G_VOID | G_DISCARD);
2579 }
2580
2581 /* now call the original request */
2582 {
2583 dSP;
2584 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2585 int i;
2586
2587 PUSHMARK (SP);
2588
2589 /* first push all args to the stack */
2590 EXTEND (SP, items + 1);
2591
2592 for (i = 0; i < items; ++i)
2593 PUSHs (arg [i]);
2594
2595 /* now push the callback closure */
2596 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2597
2598 /* now call the AIO function - we assume our request is uncancelable */
2599 PUTBACK;
2600 call_sv ((SV *)req, G_VOID | G_DISCARD);
2601 }
2602
2603 /* now that the requets is going, we loop toll we have a result */
2604 frame->data = (void *)state;
2605 frame->prepare = prepare_schedule;
2606 frame->check = slf_check_aio_req;
2607}
2608
2609static void
2610coro_aio_req_xs (pTHX_ CV *cv)
2611{
2612 dXSARGS;
2613
2614 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2615
2616 XSRETURN_EMPTY;
2617}
2618
2619/*****************************************************************************/
1382 2620
1383MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2621MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1384 2622
1385PROTOTYPES: DISABLE 2623PROTOTYPES: DISABLE
1386 2624
1387BOOT: 2625BOOT:
1388{ 2626{
1389#ifdef USE_ITHREADS 2627#ifdef USE_ITHREADS
1390 MUTEX_INIT (&coro_mutex); 2628# if CORO_PTHREAD
2629 coro_thx = PERL_GET_CONTEXT;
2630# endif
1391#endif 2631#endif
1392 BOOT_PAGESIZE; 2632 BOOT_PAGESIZE;
1393 2633
1394 irsgv = gv_fetchpv ("/", 1, SVt_PV); 2634 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2635 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2636
2637 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2638 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2639 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2640
2641 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2642 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2643 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395 2644
1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2645 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397 2646
1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2647 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2648 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1404 main_top_env = PL_top_env; 2653 main_top_env = PL_top_env;
1405 2654
1406 while (main_top_env->je_prev) 2655 while (main_top_env->je_prev)
1407 main_top_env = main_top_env->je_prev; 2656 main_top_env = main_top_env->je_prev;
1408 2657
2658 {
2659 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2660
2661 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2662 hv_store_ent (PL_custom_op_names, slf,
2663 newSVpv ("coro_slf", 0), 0);
2664
2665 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2666 hv_store_ent (PL_custom_op_descs, slf,
2667 newSVpv ("coro schedule like function", 0), 0);
2668 }
2669
1409 coroapi.ver = CORO_API_VERSION; 2670 coroapi.ver = CORO_API_VERSION;
2671 coroapi.rev = CORO_API_REVISION;
2672
1410 coroapi.transfer = api_transfer; 2673 coroapi.transfer = api_transfer;
2674
2675 coroapi.sv_state = SvSTATE_;
2676 coroapi.execute_slf = api_execute_slf;
2677 coroapi.prepare_nop = prepare_nop;
2678 coroapi.prepare_schedule = prepare_schedule;
2679 coroapi.prepare_cede = prepare_cede;
2680 coroapi.prepare_cede_notself = prepare_cede_notself;
2681
2682 {
2683 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2684
2685 if (!svp) croak ("Time::HiRes is required");
2686 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2687
2688 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2689 }
1411 2690
1412 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2691 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1413} 2692}
1414 2693
1415SV * 2694SV *
1416new (char *klass, ...) 2695new (char *klass, ...)
2696 ALIAS:
2697 Coro::new = 1
1417 CODE: 2698 CODE:
1418{ 2699{
1419 struct coro *coro; 2700 struct coro *coro;
2701 MAGIC *mg;
1420 HV *hv; 2702 HV *hv;
2703 CV *cb;
1421 int i; 2704 int i;
2705
2706 if (items > 1)
2707 {
2708 cb = coro_sv_2cv (aTHX_ ST (1));
2709
2710 if (!ix)
2711 {
2712 if (CvISXSUB (cb))
2713 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2714
2715 if (!CvROOT (cb))
2716 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2717 }
2718 }
1422 2719
1423 Newz (0, coro, 1, struct coro); 2720 Newz (0, coro, 1, struct coro);
1424 coro->args = newAV (); 2721 coro->args = newAV ();
1425 coro->flags = CF_NEW; 2722 coro->flags = CF_NEW;
1426 2723
1427 if (coro_first) coro_first->prev = coro; 2724 if (coro_first) coro_first->prev = coro;
1428 coro->next = coro_first; 2725 coro->next = coro_first;
1429 coro_first = coro; 2726 coro_first = coro;
1430 2727
1431 coro->hv = hv = newHV (); 2728 coro->hv = hv = newHV ();
1432 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2729 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2730 mg->mg_flags |= MGf_DUP;
1433 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2731 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1434 2732
2733 if (items > 1)
2734 {
2735 av_extend (coro->args, items - 1 + ix - 1);
2736
2737 if (ix)
2738 {
2739 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2740 cb = cv_coro_run;
2741 }
2742
2743 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2744
1435 for (i = 1; i < items; i++) 2745 for (i = 2; i < items; i++)
1436 av_push (coro->args, newSVsv (ST (i))); 2746 av_push (coro->args, newSVsv (ST (i)));
2747 }
1437} 2748}
1438 OUTPUT: 2749 OUTPUT:
1439 RETVAL 2750 RETVAL
1440 2751
1441# these not obviously related functions are all rolled into the same xs
1442# function to increase chances that they all will call transfer with the same
1443# stack offset
1444void 2752void
1445_set_stacklevel (...) 2753transfer (...)
1446 ALIAS: 2754 PROTOTYPE: $$
1447 Coro::State::transfer = 1 2755 CODE:
1448 Coro::schedule = 2 2756 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1449 Coro::cede = 3
1450 Coro::cede_notself = 4
1451 CODE:
1452{
1453 struct transfer_args ta;
1454
1455 switch (ix)
1456 {
1457 case 0:
1458 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1459 ta.next = 0;
1460 break;
1461
1462 case 1:
1463 if (items != 2)
1464 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1465
1466 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1467 break;
1468
1469 case 2:
1470 prepare_schedule (aTHX_ &ta);
1471 break;
1472
1473 case 3:
1474 prepare_cede (aTHX_ &ta);
1475 break;
1476
1477 case 4:
1478 if (!prepare_cede_notself (aTHX_ &ta))
1479 XSRETURN_EMPTY;
1480
1481 break;
1482 }
1483
1484 BARRIER;
1485 TRANSFER (ta);
1486
1487 if (GIMME_V != G_VOID && ta.next != ta.prev)
1488 XSRETURN_YES;
1489}
1490 2757
1491bool 2758bool
1492_destroy (SV *coro_sv) 2759_destroy (SV *coro_sv)
1493 CODE: 2760 CODE:
1494 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2761 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495 OUTPUT: 2762 OUTPUT:
1496 RETVAL 2763 RETVAL
1497 2764
1498void 2765void
1499_exit (code) 2766_exit (int code)
1500 int code
1501 PROTOTYPE: $ 2767 PROTOTYPE: $
1502 CODE: 2768 CODE:
1503 _exit (code); 2769 _exit (code);
1504 2770
1505int 2771int
1506cctx_stacksize (int new_stacksize = 0) 2772cctx_stacksize (int new_stacksize = 0)
2773 PROTOTYPE: ;$
1507 CODE: 2774 CODE:
1508 RETVAL = coro_stacksize; 2775 RETVAL = cctx_stacksize;
1509 if (new_stacksize) 2776 if (new_stacksize)
2777 {
1510 coro_stacksize = new_stacksize; 2778 cctx_stacksize = new_stacksize;
2779 ++cctx_gen;
2780 }
1511 OUTPUT: 2781 OUTPUT:
1512 RETVAL 2782 RETVAL
1513 2783
1514int 2784int
2785cctx_max_idle (int max_idle = 0)
2786 PROTOTYPE: ;$
2787 CODE:
2788 RETVAL = cctx_max_idle;
2789 if (max_idle > 1)
2790 cctx_max_idle = max_idle;
2791 OUTPUT:
2792 RETVAL
2793
2794int
1515cctx_count () 2795cctx_count ()
2796 PROTOTYPE:
1516 CODE: 2797 CODE:
1517 RETVAL = cctx_count; 2798 RETVAL = cctx_count;
1518 OUTPUT: 2799 OUTPUT:
1519 RETVAL 2800 RETVAL
1520 2801
1521int 2802int
1522cctx_idle () 2803cctx_idle ()
2804 PROTOTYPE:
1523 CODE: 2805 CODE:
1524 RETVAL = cctx_idle; 2806 RETVAL = cctx_idle;
1525 OUTPUT: 2807 OUTPUT:
1526 RETVAL 2808 RETVAL
1527 2809
1528void 2810void
1529list () 2811list ()
2812 PROTOTYPE:
1530 PPCODE: 2813 PPCODE:
1531{ 2814{
1532 struct coro *coro; 2815 struct coro *coro;
1533 for (coro = coro_first; coro; coro = coro->next) 2816 for (coro = coro_first; coro; coro = coro->next)
1534 if (coro->hv) 2817 if (coro->hv)
… …
1539call (Coro::State coro, SV *coderef) 2822call (Coro::State coro, SV *coderef)
1540 ALIAS: 2823 ALIAS:
1541 eval = 1 2824 eval = 1
1542 CODE: 2825 CODE:
1543{ 2826{
1544 if (coro->mainstack) 2827 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545 { 2828 {
1546 struct coro temp; 2829 struct coro temp;
1547 Zero (&temp, 1, struct coro);
1548 2830
1549 if (!(coro->flags & CF_RUNNING)) 2831 if (!(coro->flags & CF_RUNNING))
1550 { 2832 {
2833 PUTBACK;
1551 save_perl (aTHX_ &temp); 2834 save_perl (aTHX_ &temp);
1552 load_perl (aTHX_ coro); 2835 load_perl (aTHX_ coro);
1553 } 2836 }
1554 2837
1555 { 2838 {
1556 dSP; 2839 dSP;
1557 ENTER; 2840 ENTER;
1558 SAVETMPS; 2841 SAVETMPS;
2842 PUTBACK;
2843 PUSHSTACK;
1559 PUSHMARK (SP); 2844 PUSHMARK (SP);
1560 PUTBACK; 2845
1561 if (ix) 2846 if (ix)
1562 eval_sv (coderef, 0); 2847 eval_sv (coderef, 0);
1563 else 2848 else
1564 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2849 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2850
2851 POPSTACK;
1565 SPAGAIN; 2852 SPAGAIN;
1566 FREETMPS; 2853 FREETMPS;
1567 LEAVE; 2854 LEAVE;
1568 PUTBACK; 2855 PUTBACK;
1569 } 2856 }
1570 2857
1571 if (!(coro->flags & CF_RUNNING)) 2858 if (!(coro->flags & CF_RUNNING))
1572 { 2859 {
1573 save_perl (aTHX_ coro); 2860 save_perl (aTHX_ coro);
1574 load_perl (aTHX_ &temp); 2861 load_perl (aTHX_ &temp);
2862 SPAGAIN;
1575 } 2863 }
1576 } 2864 }
1577} 2865}
1578 2866
1579SV * 2867SV *
… …
1588 RETVAL = boolSV (coro->flags & ix); 2876 RETVAL = boolSV (coro->flags & ix);
1589 OUTPUT: 2877 OUTPUT:
1590 RETVAL 2878 RETVAL
1591 2879
1592void 2880void
2881throw (Coro::State self, SV *throw = &PL_sv_undef)
2882 PROTOTYPE: $;$
2883 CODE:
2884{
2885 struct coro *current = SvSTATE_current;
2886 SV **throwp = self == current ? &CORO_THROW : &self->except;
2887 SvREFCNT_dec (*throwp);
2888 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2889}
2890
2891void
1593api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2892api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2893 PROTOTYPE: $;$
2894 C_ARGS: aTHX_ coro, flags
1594 2895
1595SV * 2896SV *
1596has_stack (Coro::State coro) 2897has_cctx (Coro::State coro)
1597 PROTOTYPE: $ 2898 PROTOTYPE: $
1598 CODE: 2899 CODE:
1599 RETVAL = boolSV (!!coro->cctx); 2900 RETVAL = boolSV (!!coro->cctx);
1600 OUTPUT: 2901 OUTPUT:
1601 RETVAL 2902 RETVAL
… …
1606 CODE: 2907 CODE:
1607 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2908 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608 OUTPUT: 2909 OUTPUT:
1609 RETVAL 2910 RETVAL
1610 2911
1611IV 2912UV
1612rss (Coro::State coro) 2913rss (Coro::State coro)
1613 PROTOTYPE: $ 2914 PROTOTYPE: $
1614 ALIAS: 2915 ALIAS:
1615 usecount = 1 2916 usecount = 1
1616 CODE: 2917 CODE:
… …
1620 case 1: RETVAL = coro->usecount; break; 2921 case 1: RETVAL = coro->usecount; break;
1621 } 2922 }
1622 OUTPUT: 2923 OUTPUT:
1623 RETVAL 2924 RETVAL
1624 2925
2926void
2927force_cctx ()
2928 PROTOTYPE:
2929 CODE:
2930 SvSTATE_current->cctx->idle_sp = 0;
2931
2932void
2933swap_defsv (Coro::State self)
2934 PROTOTYPE: $
2935 ALIAS:
2936 swap_defav = 1
2937 CODE:
2938 if (!self->slot)
2939 croak ("cannot swap state with coroutine that has no saved state,");
2940 else
2941 {
2942 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2943 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2944
2945 SV *tmp = *src; *src = *dst; *dst = tmp;
2946 }
2947
1625 2948
1626MODULE = Coro::State PACKAGE = Coro 2949MODULE = Coro::State PACKAGE = Coro
1627 2950
1628BOOT: 2951BOOT:
1629{ 2952{
1630 int i; 2953 int i;
1631 2954
1632 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634 av_async_pool = get_av ("Coro::async_pool", TRUE); 2955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1635 2956 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2957 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2958 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2959 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
1636 coro_current = get_sv ("Coro::current", FALSE); 2960 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
1637 SvREADONLY_on (coro_current); 2961 SvREADONLY_on (coro_current);
1638 2962
2963 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2964 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2965 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2966 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2967
1639 coro_stash = gv_stashpv ("Coro", TRUE); 2968 coro_stash = gv_stashpv ("Coro", TRUE);
1640 2969
1641 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2970 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2971 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2972 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2973 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1647 2976
1648 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2977 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649 coro_ready[i] = newAV (); 2978 coro_ready[i] = newAV ();
1650 2979
1651 { 2980 {
1652 SV *sv = perl_get_sv("Coro::API", 1); 2981 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1653 2982
1654 coroapi.schedule = api_schedule; 2983 coroapi.schedule = api_schedule;
1655 coroapi.cede = api_cede; 2984 coroapi.cede = api_cede;
1656 coroapi.cede_notself = api_cede_notself; 2985 coroapi.cede_notself = api_cede_notself;
1657 coroapi.ready = api_ready; 2986 coroapi.ready = api_ready;
1658 coroapi.is_ready = api_is_ready; 2987 coroapi.is_ready = api_is_ready;
1659 coroapi.nready = &coro_nready; 2988 coroapi.nready = coro_nready;
1660 coroapi.current = coro_current; 2989 coroapi.current = coro_current;
1661 2990
1662 GCoroAPI = &coroapi; 2991 /*GCoroAPI = &coroapi;*/
1663 sv_setiv (sv, (IV)&coroapi); 2992 sv_setiv (sv, (IV)&coroapi);
1664 SvREADONLY_on (sv); 2993 SvREADONLY_on (sv);
1665 } 2994 }
1666} 2995}
2996
2997void
2998schedule (...)
2999 CODE:
3000 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3001
3002void
3003cede (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_cede);
3006
3007void
3008cede_notself (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1667 3011
1668void 3012void
1669_set_current (SV *current) 3013_set_current (SV *current)
1670 PROTOTYPE: $ 3014 PROTOTYPE: $
1671 CODE: 3015 CODE:
1672 SvREFCNT_dec (SvRV (coro_current)); 3016 SvREFCNT_dec (SvRV (coro_current));
1673 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3017 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3018
3019void
3020_set_readyhook (SV *hook)
3021 PROTOTYPE: $
3022 CODE:
3023 SvREFCNT_dec (coro_readyhook);
3024 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1674 3025
1675int 3026int
1676prio (Coro::State coro, int newprio = 0) 3027prio (Coro::State coro, int newprio = 0)
3028 PROTOTYPE: $;$
1677 ALIAS: 3029 ALIAS:
1678 nice = 1 3030 nice = 1
1679 CODE: 3031 CODE:
1680{ 3032{
1681 RETVAL = coro->prio; 3033 RETVAL = coro->prio;
… …
1696 3048
1697SV * 3049SV *
1698ready (SV *self) 3050ready (SV *self)
1699 PROTOTYPE: $ 3051 PROTOTYPE: $
1700 CODE: 3052 CODE:
1701 RETVAL = boolSV (api_ready (self)); 3053 RETVAL = boolSV (api_ready (aTHX_ self));
1702 OUTPUT: 3054 OUTPUT:
1703 RETVAL 3055 RETVAL
1704 3056
1705int 3057int
1706nready (...) 3058nready (...)
… …
1708 CODE: 3060 CODE:
1709 RETVAL = coro_nready; 3061 RETVAL = coro_nready;
1710 OUTPUT: 3062 OUTPUT:
1711 RETVAL 3063 RETVAL
1712 3064
1713# for async_pool speedup
1714void 3065void
1715_pool_1 (SV *cb) 3066_pool_handler (...)
1716 CODE: 3067 CODE:
1717{ 3068 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1718 struct coro *coro = SvSTATE (coro_current);
1719 HV *hv = (HV *)SvRV (coro_current);
1720 AV *defav = GvAV (PL_defgv);
1721 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722 AV *invoke_av;
1723 int i, len;
1724 3069
1725 coro->defoutgv = SvREFCNT_inc (PL_defoutgv); 3070void
3071async_pool (SV *cv, ...)
3072 PROTOTYPE: &@
3073 PPCODE:
3074{
3075 HV *hv = (HV *)av_pop (av_async_pool);
3076 AV *av = newAV ();
3077 SV *cb = ST (0);
3078 int i;
1726 3079
1727 if (!invoke) 3080 av_extend (av, items - 2);
1728 croak ("\3terminate\2\n"); 3081 for (i = 1; i < items; ++i)
3082 av_push (av, SvREFCNT_inc_NN (ST (i)));
1729 3083
1730 hv_store (hv, "desc", sizeof ("desc") - 1, 3084 if ((SV *)hv == &PL_sv_undef)
1731 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1732
1733 invoke_av = (AV *)SvRV (invoke);
1734 len = av_len (invoke_av);
1735
1736 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1737
1738 if (len > 0)
1739 { 3085 {
1740 av_fill (defav, len - 1); 3086 PUSHMARK (SP);
1741 for (i = 0; i < len; ++i) 3087 EXTEND (SP, 2);
1742 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3088 PUSHs (sv_Coro);
3089 PUSHs ((SV *)cv_pool_handler);
3090 PUTBACK;
3091 call_sv ((SV *)cv_coro_new, G_SCALAR);
3092 SPAGAIN;
3093
3094 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1743 } 3095 }
1744 3096
3097 {
3098 struct coro *coro = SvSTATE_hv (hv);
1745 3099
3100 assert (!coro->invoke_cb);
3101 assert (!coro->invoke_av);
3102 coro->invoke_cb = SvREFCNT_inc (cb);
3103 coro->invoke_av = av;
3104 }
1746 3105
3106 api_ready (aTHX_ (SV *)hv);
3107
3108 if (GIMME_V != G_VOID)
3109 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3110 else
1747 SvREFCNT_dec (invoke); 3111 SvREFCNT_dec (hv);
1748} 3112}
1749 3113
1750void 3114SV *
1751_pool_2 (SV *cb) 3115rouse_cb ()
3116 PROTOTYPE:
1752 CODE: 3117 CODE:
1753{ 3118 RETVAL = coro_new_rouse_cb (aTHX);
1754 struct coro *coro = SvSTATE (coro_current);
1755
1756 sv_setsv (cb, &PL_sv_undef);
1757
1758 SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->defoutgv;
1759
1760 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1762 croak ("\3terminate\2\n");
1763
1764 av_clear (GvAV (PL_defgv));
1765 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767
1768 coro->prio = 0;
1769
1770 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1771 api_trace (coro_current, 0);
1772
1773 av_push (av_async_pool, newSVsv (coro_current));
1774}
1775
1776
1777MODULE = Coro::State PACKAGE = Coro::AIO
1778
1779SV *
1780_get_state ()
1781 CODE:
1782{
1783 struct io_state *data;
1784
1785 RETVAL = newSV (sizeof (struct io_state));
1786 data = (struct io_state *)SvPVX (RETVAL);
1787 SvCUR_set (RETVAL, sizeof (struct io_state));
1788 SvPOK_only (RETVAL);
1789
1790 data->errorno = errno;
1791 data->laststype = PL_laststype;
1792 data->laststatval = PL_laststatval;
1793 data->statcache = PL_statcache;
1794}
1795 OUTPUT: 3119 OUTPUT:
1796 RETVAL 3120 RETVAL
1797 3121
1798void 3122void
1799_set_state (char *data_) 3123rouse_wait (...)
1800 PROTOTYPE: $ 3124 PROTOTYPE: ;$
3125 PPCODE:
3126 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3127
3128
3129MODULE = Coro::State PACKAGE = PerlIO::cede
3130
3131BOOT:
3132 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3133
3134
3135MODULE = Coro::State PACKAGE = Coro::Semaphore
3136
3137SV *
3138new (SV *klass, SV *count = 0)
1801 CODE: 3139 CODE:
1802{ 3140 RETVAL = sv_bless (
1803 struct io_state *data = (void *)data_; 3141 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3142 GvSTASH (CvGV (cv))
3143 );
3144 OUTPUT:
3145 RETVAL
1804 3146
1805 errno = data->errorno; 3147# helper for Coro::Channel
1806 PL_laststype = data->laststype; 3148SV *
1807 PL_laststatval = data->laststatval; 3149_alloc (int count)
1808 PL_statcache = data->statcache; 3150 CODE:
1809} 3151 RETVAL = coro_waitarray_new (aTHX_ count);
3152 OUTPUT:
3153 RETVAL
1810 3154
3155SV *
3156count (SV *self)
3157 CODE:
3158 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3159 OUTPUT:
3160 RETVAL
3161
3162void
3163up (SV *self, int adjust = 1)
3164 ALIAS:
3165 adjust = 1
3166 CODE:
3167 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3168
3169void
3170down (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3173
3174void
3175wait (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3178
3179void
3180try (SV *self)
3181 PPCODE:
3182{
3183 AV *av = (AV *)SvRV (self);
3184 SV *count_sv = AvARRAY (av)[0];
3185 IV count = SvIVX (count_sv);
3186
3187 if (count > 0)
3188 {
3189 --count;
3190 SvIVX (count_sv) = count;
3191 XSRETURN_YES;
3192 }
3193 else
3194 XSRETURN_NO;
3195}
3196
3197void
3198waiters (SV *self)
3199 PPCODE:
3200{
3201 AV *av = (AV *)SvRV (self);
3202 int wcount = AvFILLp (av) + 1 - 1;
3203
3204 if (GIMME_V == G_SCALAR)
3205 XPUSHs (sv_2mortal (newSViv (wcount)));
3206 else
3207 {
3208 int i;
3209 EXTEND (SP, wcount);
3210 for (i = 1; i <= wcount; ++i)
3211 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3212 }
3213}
3214
3215MODULE = Coro::State PACKAGE = Coro::Signal
3216
3217SV *
3218new (SV *klass)
3219 CODE:
3220 RETVAL = sv_bless (
3221 coro_waitarray_new (aTHX_ 0),
3222 GvSTASH (CvGV (cv))
3223 );
3224 OUTPUT:
3225 RETVAL
3226
3227void
3228wait (...)
3229 CODE:
3230 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3231
3232void
3233broadcast (SV *self)
3234 CODE:
3235{
3236 AV *av = (AV *)SvRV (self);
3237 coro_signal_wake (aTHX_ av, AvFILLp (av));
3238}
3239
3240void
3241send (SV *self)
3242 CODE:
3243{
3244 AV *av = (AV *)SvRV (self);
3245
3246 if (AvFILLp (av))
3247 coro_signal_wake (aTHX_ av, 1);
3248 else
3249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3250}
3251
3252IV
3253awaited (SV *self)
3254 CODE:
3255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3256 OUTPUT:
3257 RETVAL
3258
3259
3260MODULE = Coro::State PACKAGE = Coro::AnyEvent
3261
3262BOOT:
3263 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3264
3265void
3266_schedule (...)
3267 CODE:
3268{
3269 static int incede;
3270
3271 api_cede_notself (aTHX);
3272
3273 ++incede;
3274 while (coro_nready >= incede && api_cede (aTHX))
3275 ;
3276
3277 sv_setsv (sv_activity, &PL_sv_undef);
3278 if (coro_nready >= incede)
3279 {
3280 PUSHMARK (SP);
3281 PUTBACK;
3282 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3283 }
3284
3285 --incede;
3286}
3287
3288
3289MODULE = Coro::State PACKAGE = Coro::AIO
3290
3291void
3292_register (char *target, char *proto, SV *req)
3293 CODE:
3294{
3295 CV *req_cv = coro_sv_2cv (aTHX_ req);
3296 /* newXSproto doesn't return the CV on 5.8 */
3297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3298 sv_setpv ((SV *)slf_cv, proto);
3299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3300}
3301

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