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Comparing Coro/Coro/State.xs (file contents):
Revision 1.197 by root, Sat Oct 6 19:25:00 2007 UTC vs.
Revision 1.309 by root, Wed Nov 19 15:29:57 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) \
… …
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
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif
87
88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
90#endif 111#endif
91 112
92#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
98# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
99#endif 120#endif
100 121
101/* 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
102 * 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
103#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
104#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
105 131
106#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
107 133
108#if __GNUC__ >= 3 134#if __GNUC__ >= 3
109# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
110# define BARRIER __asm__ __volatile__ ("" : : : "memory")
111# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
112#else 138#else
113# define attribute(x) 139# define attribute(x)
114# define BARRIER
115# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
116#endif 142#endif
117 143
118#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
119#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
120 146
121#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
122 148
123#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
124 151
125#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
126static perl_mutex coro_mutex; 153# if CORO_PTHREAD
127# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
128# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
129#else
130# define LOCK (void)0
131# define UNLOCK (void)0
132#endif 155# endif
156#endif
133 157
134/* helper storage struct for Coro::AIO */ 158static double (*nvtime)(); /* so why doesn't it take void? */
135struct io_state
136{
137 int errorno;
138 I32 laststype;
139 int laststatval;
140 Stat_t statcache;
141};
142 159
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;
143static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
144static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
145static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
146static JMPENV *main_top_env; 168static JMPENV *main_top_env;
147static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
170static CV *coro_run_cv;
148static SV *coro_mortal; /* will be freed after next transfer */ 171static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
149 172
150static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
151static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook;
176static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */
152 178
153/* async_pool helper stuff */ 179/* async_pool helper stuff */
154static SV *sv_pool_rss; 180static SV *sv_pool_rss;
155static SV *sv_pool_size; 181static SV *sv_pool_size;
156static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
157 186
158static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
159static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
160 189
161enum { 190enum {
… …
166 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
168}; 197};
169 198
170/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
171typedef struct coro_cctx { 200typedef struct coro_cctx
201{
172 struct coro_cctx *next; 202 struct coro_cctx *next;
173 203
174 /* the stack */ 204 /* the stack */
175 void *sptr; 205 void *sptr;
176 size_t ssize; 206 size_t ssize;
… …
179 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
180 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
181 JMPENV *top_env; 211 JMPENV *top_env;
182 coro_context cctx; 212 coro_context cctx;
183 213
214 U32 gen;
184#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
185 int valgrind_id; 216 int valgrind_id;
186#endif 217#endif
187 unsigned char flags; 218 unsigned char flags;
188} coro_cctx; 219} coro_cctx;
… …
192 CF_READY = 0x0002, /* coroutine is ready */ 223 CF_READY = 0x0002, /* coroutine is ready */
193 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
194 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
195}; 226};
196 227
197/* this is a structure representing a perl-level coroutine */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
198struct coro { 229typedef struct
199 /* the c coroutine allocated to this perl coroutine, if any */ 230{
200 coro_cctx *cctx; 231 SV *defsv;
201 232 AV *defav;
202 /* data associated with this coroutine (initial args) */ 233 SV *errsv;
203 AV *args; 234 SV *irsgv;
204 int refcnt;
205 int flags; /* CF_ flags */
206
207 /* optionally saved, might be zero */
208 AV *defav; /* @_ */
209 SV *defsv; /* $_ */
210 SV *errsv; /* $@ */
211 SV *deffh; /* default filehandle */
212 SV *irssv; /* $/ */
213 SV *irssv_sv; /* real $/ cache */
214
215#define VAR(name,type) type name; 235#define VAR(name,type) type name;
216# include "state.h" 236# include "state.h"
217#undef VAR 237#undef VAR
238} perl_slots;
239
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241
242/* this is a structure representing a perl-level coroutine */
243struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx;
246
247 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */
251
252 CV *startcv; /* the CV to execute */
253 AV *args; /* data associated with this coroutine (initial args) */
254 int refcnt; /* coroutines are refcounted, yes */
255 int flags; /* CF_ flags */
256 HV *hv; /* the perl hash associated with this coro, if any */
257 void (*on_destroy)(pTHX_ struct coro *coro);
218 258
219 /* statistics */ 259 /* statistics */
220 int usecount; /* number of transfers to this coro */ 260 int usecount; /* number of transfers to this coro */
221 261
222 /* coro process data */ 262 /* coro process data */
223 int prio; 263 int prio;
224 SV *throw; 264 SV *except; /* exception to be thrown */
265 SV *rouse_cb;
225 266
226 /* async_pool */ 267 /* async_pool */
227 SV *saved_deffh; 268 SV *saved_deffh;
228 269
229 /* linked list */ 270 /* linked list */
230 struct coro *next, *prev; 271 struct coro *next, *prev;
231 HV *hv; /* the perl hash associated with this coro, if any */
232}; 272};
233 273
234typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
235typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the mainr easonw e don't support windows process emulation */
280static struct CoroSLF slf_frame; /* the current slf frame */
236 281
237/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
238 283
239#define PRIO_MAX 3 284#define PRIO_MAX 3
240#define PRIO_HIGH 1 285#define PRIO_HIGH 1
… …
243#define PRIO_IDLE -3 288#define PRIO_IDLE -3
244#define PRIO_MIN -4 289#define PRIO_MIN -4
245 290
246/* for Coro.pm */ 291/* for Coro.pm */
247static SV *coro_current; 292static SV *coro_current;
293static SV *coro_readyhook;
248static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 294static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
249static int coro_nready;
250static struct coro *coro_first; 295static struct coro *coro_first;
296#define coro_nready coroapi.nready
251 297
252/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
299
300static SV *
301coro_get_sv (pTHX_ const char *name, int create)
302{
303#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_sv (name, create);
306#endif
307 return get_sv (name, create);
308}
309
310static AV *
311coro_get_av (pTHX_ const char *name, int create)
312{
313#if PERL_VERSION_ATLEAST (5,10,0)
314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
315 get_av (name, create);
316#endif
317 return get_av (name, create);
318}
319
320static HV *
321coro_get_hv (pTHX_ const char *name, int create)
322{
323#if PERL_VERSION_ATLEAST (5,10,0)
324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
325 get_hv (name, create);
326#endif
327 return get_hv (name, create);
328}
329
330/* may croak */
331INLINE CV *
332coro_sv_2cv (SV *sv)
333{
334 HV *st;
335 GV *gvp;
336 return sv_2cv (sv, &st, &gvp, 0);
337}
253 338
254static AV * 339static AV *
255coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
256{ 341{
257 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
258 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
259 344
260 newpadlist = newAV (); 345 newpadlist = newAV ();
261 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
262#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
263 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
264#else 349#else
265 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
266#endif 351#endif
267 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
268 --AvFILLp (padlist); 353 --AvFILLp (padlist);
269 354
270 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
271 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
272 357
273 return newpadlist; 358 return newpadlist;
274} 359}
275 360
… …
305 390
306 /* casting is fun. */ 391 /* casting is fun. */
307 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
308 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
309 394
310 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
311 396
312 return 0; 397 return 0;
313} 398}
314 399
400#define CORO_MAGIC_type_cv 26
315#define PERL_MAGIC_coro PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
316 402
317static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
318 407
319#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
320 SvMAGIC (cv) \ 410 ? SvMAGIC (sv) \
321 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 411 : mg_find (sv, type))
322 ? SvMAGIC (cv) \ 412
323 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 413#define CORO_MAGIC(sv, type) \
414 (expect_true (SvMAGIC (sv)) \
415 ? CORO_MAGIC_NN (sv, type) \
324 : 0 416 : 0)
325 417
326static struct coro * 418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
420
421INLINE struct coro *
327SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
328{ 423{
329 HV *stash; 424 HV *stash;
330 MAGIC *mg; 425 MAGIC *mg;
331 426
… …
341 /* very slow, but rare, check */ 436 /* very slow, but rare, check */
342 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 437 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
343 croak ("Coro::State object required"); 438 croak ("Coro::State object required");
344 } 439 }
345 440
346 mg = CORO_MAGIC (coro); 441 mg = CORO_MAGIC_state (coro);
347 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
348} 443}
349 444
350#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
351 446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
450
352/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
353static void 452static void
354get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
355{ 454{
356 MAGIC *mg = CORO_MAGIC (cv); 455 MAGIC *mg = CORO_MAGIC_cv (cv);
357 AV *av; 456 AV *av;
358 457
359 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 458 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
360 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 459 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
361 else 460 else
362 { 461 {
363#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
364 /* this is probably cleaner, but also slower? */ 463 /* this is probably cleaner? but also slower! */
464 /* in practise, it seems to be less stable */
365 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
366 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
367 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
368 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
369#else 469#else
370 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
373} 473}
374 474
375static void 475static void
376put_padlist (pTHX_ CV *cv) 476put_padlist (pTHX_ CV *cv)
377{ 477{
378 MAGIC *mg = CORO_MAGIC (cv); 478 MAGIC *mg = CORO_MAGIC_cv (cv);
379 AV *av; 479 AV *av;
380 480
381 if (expect_false (!mg)) 481 if (expect_false (!mg))
382 { 482 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
383 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
384 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
385 mg->mg_virtual = &vtbl_coro;
386 mg->mg_obj = (SV *)newAV ();
387 }
388 483
389 av = (AV *)mg->mg_obj; 484 av = (AV *)mg->mg_obj;
390 485
391 if (expect_false (AvFILLp (av) >= AvMAX (av))) 486 if (expect_false (AvFILLp (av) >= AvMAX (av)))
392 av_extend (av, AvMAX (av) + 1); 487 av_extend (av, AvMAX (av) + 1);
… …
397/** load & save, init *******************************************************/ 492/** load & save, init *******************************************************/
398 493
399static void 494static void
400load_perl (pTHX_ Coro__State c) 495load_perl (pTHX_ Coro__State c)
401{ 496{
497 perl_slots *slot = c->slot;
498 c->slot = 0;
499
500 PL_mainstack = c->mainstack;
501
502 GvSV (PL_defgv) = slot->defsv;
503 GvAV (PL_defgv) = slot->defav;
504 GvSV (PL_errgv) = slot->errsv;
505 GvSV (irsgv) = slot->irsgv;
506
402#define VAR(name,type) PL_ ## name = c->name; 507 #define VAR(name,type) PL_ ## name = slot->name;
403# include "state.h" 508 # include "state.h"
404#undef VAR 509 #undef VAR
405
406 GvSV (PL_defgv) = c->defsv;
407 GvAV (PL_defgv) = c->defav;
408 GvSV (PL_errgv) = c->errsv;
409 GvSV (irsgv) = c->irssv_sv;
410 510
411 { 511 {
412 dSP; 512 dSP;
513
413 CV *cv; 514 CV *cv;
414 515
415 /* now do the ugly restore mess */ 516 /* now do the ugly restore mess */
416 while (expect_true (cv = (CV *)POPs)) 517 while (expect_true (cv = (CV *)POPs))
417 { 518 {
… …
420 CvPADLIST (cv) = (AV *)POPs; 521 CvPADLIST (cv) = (AV *)POPs;
421 } 522 }
422 523
423 PUTBACK; 524 PUTBACK;
424 } 525 }
526
527 slf_frame = c->slf_frame;
528 CORO_THROW = c->except;
425} 529}
426 530
427static void 531static void
428save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
429{ 533{
534 c->except = CORO_THROW;
535 c->slf_frame = slf_frame;
536
430 { 537 {
431 dSP; 538 dSP;
432 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
433 PERL_CONTEXT *ccstk = cxstack; 540 PERL_CONTEXT *ccstk = cxstack;
434 PERL_SI *top_si = PL_curstackinfo; 541 PERL_SI *top_si = PL_curstackinfo;
… …
452 559
453 if (expect_true (CvDEPTH (cv))) 560 if (expect_true (CvDEPTH (cv)))
454 { 561 {
455 EXTEND (SP, 3); 562 EXTEND (SP, 3);
456 PUSHs ((SV *)CvPADLIST (cv)); 563 PUSHs ((SV *)CvPADLIST (cv));
457 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 564 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
458 PUSHs ((SV *)cv); 565 PUSHs ((SV *)cv);
459 566
460 CvDEPTH (cv) = 0; 567 CvDEPTH (cv) = 0;
461 get_padlist (aTHX_ cv); 568 get_padlist (aTHX_ cv);
462 } 569 }
… …
472 } 579 }
473 580
474 PUTBACK; 581 PUTBACK;
475 } 582 }
476 583
584 /* allocate some space on the context stack for our purposes */
585 /* we manually unroll here, as usually 2 slots is enough */
586 if (SLOT_COUNT >= 1) CXINC;
587 if (SLOT_COUNT >= 2) CXINC;
588 if (SLOT_COUNT >= 3) CXINC;
589 {
590 int i;
591 for (i = 3; i < SLOT_COUNT; ++i)
592 CXINC;
593 }
594 cxstack_ix -= SLOT_COUNT; /* undo allocation */
595
596 c->mainstack = PL_mainstack;
597
598 {
599 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
600
477 c->defav = GvAV (PL_defgv); 601 slot->defav = GvAV (PL_defgv);
478 c->defsv = DEFSV; 602 slot->defsv = DEFSV;
479 c->errsv = ERRSV; 603 slot->errsv = ERRSV;
480 c->irssv_sv = GvSV (irsgv); 604 slot->irsgv = GvSV (irsgv);
481 605
482#define VAR(name,type)c->name = PL_ ## name; 606 #define VAR(name,type) slot->name = PL_ ## name;
483# include "state.h" 607 # include "state.h"
484#undef VAR 608 #undef VAR
609 }
485} 610}
486 611
487/* 612/*
488 * allocate various perl stacks. This is an exact copy 613 * allocate various perl stacks. This is almost an exact copy
489 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
490 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
491 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
492 */ 617 */
493#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
494# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
495#else 620#else
496static void 621static void
497coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
498{ 623{
499 PL_curstackinfo = new_stackinfo(64, 6); 624 PL_curstackinfo = new_stackinfo(32, 8);
500 PL_curstackinfo->si_type = PERLSI_MAIN; 625 PL_curstackinfo->si_type = PERLSI_MAIN;
501 PL_curstack = PL_curstackinfo->si_stack; 626 PL_curstack = PL_curstackinfo->si_stack;
502 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 627 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
503 628
504 PL_stack_base = AvARRAY(PL_curstack); 629 PL_stack_base = AvARRAY(PL_curstack);
505 PL_stack_sp = PL_stack_base; 630 PL_stack_sp = PL_stack_base;
506 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 631 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
507 632
508 New(50,PL_tmps_stack,64,SV*); 633 New(50,PL_tmps_stack,32,SV*);
509 PL_tmps_floor = -1; 634 PL_tmps_floor = -1;
510 PL_tmps_ix = -1; 635 PL_tmps_ix = -1;
511 PL_tmps_max = 64; 636 PL_tmps_max = 32;
512 637
513 New(54,PL_markstack,16,I32); 638 New(54,PL_markstack,16,I32);
514 PL_markstack_ptr = PL_markstack; 639 PL_markstack_ptr = PL_markstack;
515 PL_markstack_max = PL_markstack + 16; 640 PL_markstack_max = PL_markstack + 16;
516 641
517#ifdef SET_MARK_OFFSET 642#ifdef SET_MARK_OFFSET
518 SET_MARK_OFFSET; 643 SET_MARK_OFFSET;
519#endif 644#endif
520 645
521 New(54,PL_scopestack,16,I32); 646 New(54,PL_scopestack,8,I32);
522 PL_scopestack_ix = 0; 647 PL_scopestack_ix = 0;
523 PL_scopestack_max = 16; 648 PL_scopestack_max = 8;
524 649
525 New(54,PL_savestack,64,ANY); 650 New(54,PL_savestack,24,ANY);
526 PL_savestack_ix = 0; 651 PL_savestack_ix = 0;
527 PL_savestack_max = 64; 652 PL_savestack_max = 24;
528 653
529#if !PERL_VERSION_ATLEAST (5,9,0) 654#if !PERL_VERSION_ATLEAST (5,10,0)
530 New(54,PL_retstack,4,OP*); 655 New(54,PL_retstack,4,OP*);
531 PL_retstack_ix = 0; 656 PL_retstack_ix = 0;
532 PL_retstack_max = 4; 657 PL_retstack_max = 4;
533#endif 658#endif
534} 659}
… …
536 661
537/* 662/*
538 * destroy the stacks, the callchain etc... 663 * destroy the stacks, the callchain etc...
539 */ 664 */
540static void 665static void
541coro_destroy_stacks (pTHX) 666coro_destruct_stacks (pTHX)
542{ 667{
543 while (PL_curstackinfo->si_next) 668 while (PL_curstackinfo->si_next)
544 PL_curstackinfo = PL_curstackinfo->si_next; 669 PL_curstackinfo = PL_curstackinfo->si_next;
545 670
546 while (PL_curstackinfo) 671 while (PL_curstackinfo)
… …
557 682
558 Safefree (PL_tmps_stack); 683 Safefree (PL_tmps_stack);
559 Safefree (PL_markstack); 684 Safefree (PL_markstack);
560 Safefree (PL_scopestack); 685 Safefree (PL_scopestack);
561 Safefree (PL_savestack); 686 Safefree (PL_savestack);
562#if !PERL_VERSION_ATLEAST (5,9,0) 687#if !PERL_VERSION_ATLEAST (5,10,0)
563 Safefree (PL_retstack); 688 Safefree (PL_retstack);
564#endif 689#endif
565} 690}
566 691
567static size_t 692static size_t
… …
569{ 694{
570 size_t rss = sizeof (*coro); 695 size_t rss = sizeof (*coro);
571 696
572 if (coro->mainstack) 697 if (coro->mainstack)
573 { 698 {
699 perl_slots tmp_slot;
700 perl_slots *slot;
701
574 if (coro->flags & CF_RUNNING) 702 if (coro->flags & CF_RUNNING)
575 { 703 {
704 slot = &tmp_slot;
705
576 #define VAR(name,type)coro->name = PL_ ## name; 706 #define VAR(name,type) slot->name = PL_ ## name;
577 # include "state.h" 707 # include "state.h"
578 #undef VAR 708 #undef VAR
579 } 709 }
710 else
711 slot = coro->slot;
580 712
713 if (slot)
714 {
581 rss += sizeof (coro->curstackinfo); 715 rss += sizeof (slot->curstackinfo);
582 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
583 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 716 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
584 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 717 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
585 rss += coro->tmps_max * sizeof (SV *); 718 rss += slot->tmps_max * sizeof (SV *);
586 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 719 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
587 rss += coro->scopestack_max * sizeof (I32); 720 rss += slot->scopestack_max * sizeof (I32);
588 rss += coro->savestack_max * sizeof (ANY); 721 rss += slot->savestack_max * sizeof (ANY);
589 722
590#if !PERL_VERSION_ATLEAST (5,9,0) 723#if !PERL_VERSION_ATLEAST (5,10,0)
591 rss += coro->retstack_max * sizeof (OP *); 724 rss += slot->retstack_max * sizeof (OP *);
592#endif 725#endif
726 }
593 } 727 }
594 728
595 return rss; 729 return rss;
596} 730}
597 731
598/** coroutine stack handling ************************************************/ 732/** coroutine stack handling ************************************************/
599 733
734static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
735static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
736static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
737
738/* apparently < 5.8.8 */
739#ifndef MgPV_nolen_const
740#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
741 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
742 (const char*)(mg)->mg_ptr)
743#endif
744
745/*
746 * This overrides the default magic get method of %SIG elements.
747 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
748 * and instead of tryign to save and restore the hash elements, we just provide
749 * readback here.
750 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
751 * not expecting this to actually change the hook. This is a potential problem
752 * when a schedule happens then, but we ignore this.
753 */
600static void 754static int
755coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
756{
757 const char *s = MgPV_nolen_const (mg);
758
759 if (*s == '_')
760 {
761 SV **svp = 0;
762
763 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
764 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
765
766 if (svp)
767 {
768 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
769 return 0;
770 }
771 }
772
773 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
774}
775
776static int
777coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
778{
779 const char *s = MgPV_nolen_const (mg);
780
781 if (*s == '_')
782 {
783 SV **svp = 0;
784
785 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
786 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
787
788 if (svp)
789 {
790 SV *old = *svp;
791 *svp = 0;
792 SvREFCNT_dec (old);
793 return 0;
794 }
795 }
796
797 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
798}
799
800static int
801coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
802{
803 const char *s = MgPV_nolen_const (mg);
804
805 if (*s == '_')
806 {
807 SV **svp = 0;
808
809 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
810 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
811
812 if (svp)
813 {
814 SV *old = *svp;
815 *svp = newSVsv (sv);
816 SvREFCNT_dec (old);
817 return 0;
818 }
819 }
820
821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
822}
823
824static void
825prepare_nop (pTHX_ struct coro_transfer_args *ta)
826{
827 /* kind of mega-hacky, but works */
828 ta->next = ta->prev = (struct coro *)ta;
829}
830
831static int
832slf_check_nop (pTHX_ struct CoroSLF *frame)
833{
834 return 0;
835}
836
837static UNOP coro_setup_op;
838
839static void NOINLINE /* noinline to keep it out of the transfer fast path */
601coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
602{ 841{
603 /* 842 /*
604 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
605 */ 844 */
… …
612 PL_curpm = 0; 851 PL_curpm = 0;
613 PL_curpad = 0; 852 PL_curpad = 0;
614 PL_localizing = 0; 853 PL_localizing = 0;
615 PL_dirty = 0; 854 PL_dirty = 0;
616 PL_restartop = 0; 855 PL_restartop = 0;
856#if PERL_VERSION_ATLEAST (5,10,0)
857 PL_parser = 0;
858#endif
859
860 /* recreate the die/warn hooks */
861 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
862 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
617 863
618 GvSV (PL_defgv) = newSV (0); 864 GvSV (PL_defgv) = newSV (0);
619 GvAV (PL_defgv) = coro->args; coro->args = 0; 865 GvAV (PL_defgv) = coro->args; coro->args = 0;
620 GvSV (PL_errgv) = newSV (0); 866 GvSV (PL_errgv) = newSV (0);
621 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 867 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
622 PL_rs = newSVsv (GvSV (irsgv)); 868 PL_rs = newSVsv (GvSV (irsgv));
623 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
624 870
625 { 871 {
626 dSP; 872 dSP;
627 LOGOP myop; 873 UNOP myop;
628 874
629 Zero (&myop, 1, LOGOP); 875 Zero (&myop, 1, UNOP);
630 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
631 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
632 879
633 PUSHMARK (SP); 880 PUSHMARK (SP);
634 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
635 PUTBACK; 882 PUTBACK;
636 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
637 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
638 SPAGAIN;
639 } 885 }
640 886
641 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 887 /* this newly created coroutine might be run on an existing cctx which most
642} 888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
889 */
890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
643 892
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM;
896 coro_setup_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */
898
899 PL_op = (OP *)&coro_setup_op;
900
901 /* copy throw, in case it was set before coro_setup */
902 CORO_THROW = coro->except;
903}
904
644static void 905static void
645coro_destroy (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
646{ 907{
647 if (!IN_DESTRUCT) 908 if (!IN_DESTRUCT)
648 { 909 {
649 /* restore all saved variables and stuff */ 910 /* restore all saved variables and stuff */
650 LEAVE_SCOPE (0); 911 LEAVE_SCOPE (0);
… …
666 SvREFCNT_dec (GvSV (PL_errgv)); 927 SvREFCNT_dec (GvSV (PL_errgv));
667 SvREFCNT_dec (PL_defoutgv); 928 SvREFCNT_dec (PL_defoutgv);
668 SvREFCNT_dec (PL_rs); 929 SvREFCNT_dec (PL_rs);
669 SvREFCNT_dec (GvSV (irsgv)); 930 SvREFCNT_dec (GvSV (irsgv));
670 931
932 SvREFCNT_dec (PL_diehook);
933 SvREFCNT_dec (PL_warnhook);
934
671 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
672 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
673 937
674 coro_destroy_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
675} 939}
676 940
677static void 941INLINE void
678free_coro_mortal (pTHX) 942free_coro_mortal (pTHX)
679{ 943{
680 if (expect_true (coro_mortal)) 944 if (expect_true (coro_mortal))
681 { 945 {
682 SvREFCNT_dec (coro_mortal); 946 SvREFCNT_dec (coro_mortal);
… …
687static int 951static int
688runops_trace (pTHX) 952runops_trace (pTHX)
689{ 953{
690 COP *oldcop = 0; 954 COP *oldcop = 0;
691 int oldcxix = -2; 955 int oldcxix = -2;
692 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
693 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
694 958
695 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
696 { 960 {
697 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
716 : cx->blk_gimme == G_SCALAR ? bot + 1 980 : cx->blk_gimme == G_SCALAR ? bot + 1
717 : bot; 981 : bot;
718 982
719 av_extend (av, top - bot); 983 av_extend (av, top - bot);
720 while (bot < top) 984 while (bot < top)
721 av_push (av, SvREFCNT_inc (*bot++)); 985 av_push (av, SvREFCNT_inc_NN (*bot++));
722 986
723 PL_runops = RUNOPS_DEFAULT; 987 PL_runops = RUNOPS_DEFAULT;
724 ENTER; 988 ENTER;
725 SAVETMPS; 989 SAVETMPS;
726 EXTEND (SP, 3); 990 EXTEND (SP, 3);
… …
764 SAVETMPS; 1028 SAVETMPS;
765 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
766 PUSHMARK (SP); 1030 PUSHMARK (SP);
767 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
768 PUSHs (fullname); 1032 PUSHs (fullname);
769 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1033 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
770 PUTBACK; 1034 PUTBACK;
771 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
772 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
773 SPAGAIN; 1037 SPAGAIN;
774 FREETMPS; 1038 FREETMPS;
… …
806 1070
807 TAINT_NOT; 1071 TAINT_NOT;
808 return 0; 1072 return 0;
809} 1073}
810 1074
811/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static struct coro_cctx *cctx_ssl_cctx;
812/* _cctx_init should be careful, as it could be called at almost any time */ 1076static struct CoroSLF cctx_ssl_frame;
813/* during execution of a perl program */ 1077
1078static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0;
1083}
1084
1085static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{
1088 *frame = cctx_ssl_frame;
1089
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091}
1092
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
814static void NOINLINE 1094static void NOINLINE
815prepare_cctx (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
816{ 1096{
817 dSP;
818 LOGOP myop;
819
820 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
821 1098
822 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
823 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
824 1101
825 Zero (&myop, 1, LOGOP); 1102 /* we already must be executing an SLF op, there is no other valid way
826 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
827 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
828 1106
829 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
830 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
831 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1109 cctx_ssl_frame = slf_frame;
832 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
833 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
834 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1113}
836 SPAGAIN; 1114
1115/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void
1117transfer_tail (pTHX)
1118{
1119 free_coro_mortal (aTHX);
837} 1120}
838 1121
839/* 1122/*
840 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
841 */ 1124 */
842static void 1125static void
843coro_run (void *arg) 1126cctx_run (void *arg)
844{ 1127{
1128#ifdef USE_ITHREADS
1129# if CORO_PTHREAD
1130 PERL_SET_CONTEXT (coro_thx);
1131# endif
1132#endif
1133 {
845 dTHX; 1134 dTHX;
846 1135
847 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1136 /* normally we would need to skip the entersub here */
848 UNLOCK; 1137 /* not doing so will re-execute it, which is exactly what we want */
849
850 /* we now skip the entersub that lead to transfer() */
851 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
852 1139
853 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
854 prepare_cctx (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
855 1142
1143 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX);
1145
856 /* somebody or something will hit me for both perl_run and PL_restartop */ 1146 /* somebody or something will hit me for both perl_run and PL_restartop */
857 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
858 perl_run (PL_curinterp); 1148 perl_run (PL_curinterp);
859
860 /* 1149 /*
1150 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these
1152 */
1153
1154 /*
861 * If perl-run returns we assume exit() was being called or the coro 1155 * If perl-run returns we assume exit() was being called or the coro
862 * fell off the end, which seems to be the only valid (non-bug) 1156 * fell off the end, which seems to be the only valid (non-bug)
863 * reason for perl_run to return. We try to exit by jumping to the 1157 * reason for perl_run to return. We try to exit by jumping to the
864 * bootstrap-time "top" top_env, as we cannot restore the "main" 1158 * bootstrap-time "top" top_env, as we cannot restore the "main"
865 * coroutine as Coro has no such concept 1159 * coroutine as Coro has no such concept
866 */ 1160 */
867 PL_top_env = main_top_env; 1161 PL_top_env = main_top_env;
868 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 }
869} 1164}
870 1165
871static coro_cctx * 1166static coro_cctx *
872cctx_new () 1167cctx_new ()
873{ 1168{
874 coro_cctx *cctx; 1169 coro_cctx *cctx;
1170
1171 ++cctx_count;
1172 New (0, cctx, 1, coro_cctx);
1173
1174 cctx->gen = cctx_gen;
1175 cctx->flags = 0;
1176 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1177
1178 return cctx;
1179}
1180
1181/* create a new cctx only suitable as source */
1182static coro_cctx *
1183cctx_new_empty ()
1184{
1185 coro_cctx *cctx = cctx_new ();
1186
1187 cctx->sptr = 0;
1188 coro_create (&cctx->cctx, 0, 0, 0, 0);
1189
1190 return cctx;
1191}
1192
1193/* create a new cctx suitable as destination/running a perl interpreter */
1194static coro_cctx *
1195cctx_new_run ()
1196{
1197 coro_cctx *cctx = cctx_new ();
875 void *stack_start; 1198 void *stack_start;
876 size_t stack_size; 1199 size_t stack_size;
877 1200
878 ++cctx_count;
879
880 Newz (0, cctx, 1, coro_cctx);
881
882#if HAVE_MMAP 1201#if HAVE_MMAP
883
884 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1202 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
885 /* mmap supposedly does allocate-on-write for us */ 1203 /* mmap supposedly does allocate-on-write for us */
886 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1204 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
887 1205
888 if (cctx->sptr != (void *)-1) 1206 if (cctx->sptr != (void *)-1)
889 { 1207 {
890# if CORO_STACKGUARD 1208 #if CORO_STACKGUARD
891 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1209 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
892# endif 1210 #endif
893 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1211 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
894 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1212 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
895 cctx->flags |= CC_MAPPED; 1213 cctx->flags |= CC_MAPPED;
896 } 1214 }
897 else 1215 else
898#endif 1216#endif
899 { 1217 {
900 cctx->ssize = coro_stacksize * (long)sizeof (long); 1218 cctx->ssize = cctx_stacksize * (long)sizeof (long);
901 New (0, cctx->sptr, coro_stacksize, long); 1219 New (0, cctx->sptr, cctx_stacksize, long);
902 1220
903 if (!cctx->sptr) 1221 if (!cctx->sptr)
904 { 1222 {
905 perror ("FATAL: unable to allocate stack for coroutine"); 1223 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
906 _exit (EXIT_FAILURE); 1224 _exit (EXIT_FAILURE);
907 } 1225 }
908 1226
909 stack_start = cctx->sptr; 1227 stack_start = cctx->sptr;
910 stack_size = cctx->ssize; 1228 stack_size = cctx->ssize;
911 } 1229 }
912 1230
913 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1231 #if CORO_USE_VALGRIND
1232 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1233 #endif
1234
914 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1235 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
915 1236
916 return cctx; 1237 return cctx;
917} 1238}
918 1239
919static void 1240static void
… …
921{ 1242{
922 if (!cctx) 1243 if (!cctx)
923 return; 1244 return;
924 1245
925 --cctx_count; 1246 --cctx_count;
1247 coro_destroy (&cctx->cctx);
926 1248
1249 /* coro_transfer creates new, empty cctx's */
1250 if (cctx->sptr)
1251 {
927#if CORO_USE_VALGRIND 1252 #if CORO_USE_VALGRIND
928 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1253 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
929#endif 1254 #endif
930 1255
931#if HAVE_MMAP 1256#if HAVE_MMAP
932 if (cctx->flags & CC_MAPPED) 1257 if (cctx->flags & CC_MAPPED)
933 munmap (cctx->sptr, cctx->ssize); 1258 munmap (cctx->sptr, cctx->ssize);
934 else 1259 else
935#endif 1260#endif
936 Safefree (cctx->sptr); 1261 Safefree (cctx->sptr);
1262 }
937 1263
938 Safefree (cctx); 1264 Safefree (cctx);
939} 1265}
940 1266
941/* wether this cctx should be destructed */ 1267/* wether this cctx should be destructed */
942#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1268#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
943 1269
944static coro_cctx * 1270static coro_cctx *
945cctx_get (pTHX) 1271cctx_get (pTHX)
946{ 1272{
947 while (expect_true (cctx_first)) 1273 while (expect_true (cctx_first))
… …
954 return cctx; 1280 return cctx;
955 1281
956 cctx_destroy (cctx); 1282 cctx_destroy (cctx);
957 } 1283 }
958 1284
959 return cctx_new (); 1285 return cctx_new_run ();
960} 1286}
961 1287
962static void 1288static void
963cctx_put (coro_cctx *cctx) 1289cctx_put (coro_cctx *cctx)
964{ 1290{
1291 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1292
965 /* free another cctx if overlimit */ 1293 /* free another cctx if overlimit */
966 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1294 if (expect_false (cctx_idle >= cctx_max_idle))
967 { 1295 {
968 coro_cctx *first = cctx_first; 1296 coro_cctx *first = cctx_first;
969 cctx_first = first->next; 1297 cctx_first = first->next;
970 --cctx_idle; 1298 --cctx_idle;
971 1299
… …
980/** coroutine switching *****************************************************/ 1308/** coroutine switching *****************************************************/
981 1309
982static void 1310static void
983transfer_check (pTHX_ struct coro *prev, struct coro *next) 1311transfer_check (pTHX_ struct coro *prev, struct coro *next)
984{ 1312{
1313 /* TODO: throwing up here is considered harmful */
1314
985 if (expect_true (prev != next)) 1315 if (expect_true (prev != next))
986 { 1316 {
987 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
988 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
989 1319
990 if (expect_false (next->flags & CF_RUNNING)) 1320 if (expect_false (next->flags & CF_RUNNING))
991 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
992 1322
993 if (expect_false (next->flags & CF_DESTROYED)) 1323 if (expect_false (next->flags & CF_DESTROYED))
994 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
995 1325
1326#if !PERL_VERSION_ATLEAST (5,10,0)
996 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1327 if (expect_false (PL_lex_state != LEX_NOTPARSING))
997 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1329#endif
998 } 1330 }
999} 1331}
1000 1332
1001/* always use the TRANSFER macro */ 1333/* always use the TRANSFER macro */
1002static void NOINLINE 1334static void NOINLINE /* noinline so we have a fixed stackframe */
1003transfer (pTHX_ struct coro *prev, struct coro *next) 1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1004{ 1336{
1005 dSTACKLEVEL; 1337 dSTACKLEVEL;
1006 1338
1007 /* sometimes transfer is only called to set idle_sp */ 1339 /* sometimes transfer is only called to set idle_sp */
1008 if (expect_false (!next)) 1340 if (expect_false (!next))
… …
1014 { 1346 {
1015 coro_cctx *prev__cctx; 1347 coro_cctx *prev__cctx;
1016 1348
1017 if (expect_false (prev->flags & CF_NEW)) 1349 if (expect_false (prev->flags & CF_NEW))
1018 { 1350 {
1019 /* create a new empty context */ 1351 /* create a new empty/source context */
1020 Newz (0, prev->cctx, 1, coro_cctx); 1352 prev->cctx = cctx_new_empty ();
1021 prev->flags &= ~CF_NEW; 1353 prev->flags &= ~CF_NEW;
1022 prev->flags |= CF_RUNNING; 1354 prev->flags |= CF_RUNNING;
1023 } 1355 }
1024 1356
1025 prev->flags &= ~CF_RUNNING; 1357 prev->flags &= ~CF_RUNNING;
1026 next->flags |= CF_RUNNING; 1358 next->flags |= CF_RUNNING;
1027 1359
1028 LOCK; 1360 /* first get rid of the old state */
1361 save_perl (aTHX_ prev);
1029 1362
1030 if (expect_false (next->flags & CF_NEW)) 1363 if (expect_false (next->flags & CF_NEW))
1031 { 1364 {
1032 /* need to start coroutine */ 1365 /* need to start coroutine */
1033 next->flags &= ~CF_NEW; 1366 next->flags &= ~CF_NEW;
1034 /* first get rid of the old state */
1035 save_perl (aTHX_ prev);
1036 /* setup coroutine call */ 1367 /* setup coroutine call */
1037 coro_setup (aTHX_ next); 1368 coro_setup (aTHX_ next);
1038 } 1369 }
1039 else 1370 else
1371 load_perl (aTHX_ next);
1372
1373 prev__cctx = prev->cctx;
1374
1375 /* possibly untie and reuse the cctx */
1376 if (expect_true (
1377 prev__cctx->idle_sp == STACKLEVEL
1378 && !(prev__cctx->flags & CC_TRACE)
1379 && !force_cctx
1380 ))
1040 { 1381 {
1041 /* coroutine already started */
1042 save_perl (aTHX_ prev);
1043 load_perl (aTHX_ next);
1044 }
1045
1046 prev__cctx = prev->cctx;
1047
1048 /* possibly "free" the cctx */
1049 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1050 {
1051 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1052 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1053 1384
1054 prev->cctx = 0; 1385 prev->cctx = 0;
1055 1386
1056 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1057 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1058 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1389 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1390 if (!next->cctx)
1059 next->cctx = cctx_get (aTHX); 1391 next->cctx = cctx_get (aTHX);
1060 1392
1061 cctx_put (prev__cctx); 1393 cctx_put (prev__cctx);
1062 } 1394 }
1063 1395
1064 ++next->usecount; 1396 ++next->usecount;
… …
1071 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
1072 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
1073 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1074 } 1406 }
1075 1407
1076 free_coro_mortal (aTHX); 1408 transfer_tail (aTHX);
1077 UNLOCK;
1078
1079 if (expect_false (prev->throw || next->throw))
1080 {
1081 struct coro *coro = SvSTATE (coro_current);
1082
1083 if (coro->throw)
1084 {
1085 SV *exception = coro->throw;
1086 coro->throw = 0;
1087 sv_setsv (ERRSV, exception);
1088 croak (0);
1089 }
1090 }
1091 } 1409 }
1092} 1410}
1093 1411
1094struct transfer_args
1095{
1096 struct coro *prev, *next;
1097};
1098
1099#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1100#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1101 1414
1102/** high level stuff ********************************************************/ 1415/** high level stuff ********************************************************/
1103 1416
1104static int 1417static int
1105coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
1106{ 1419{
1107 if (coro->flags & CF_DESTROYED) 1420 if (coro->flags & CF_DESTROYED)
1108 return 0; 1421 return 0;
1422
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro);
1109 1425
1110 coro->flags |= CF_DESTROYED; 1426 coro->flags |= CF_DESTROYED;
1111 1427
1112 if (coro->flags & CF_READY) 1428 if (coro->flags & CF_READY)
1113 { 1429 {
1114 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1430 /* reduce nready, as destroying a ready coro effectively unreadies it */
1115 /* alternative: look through all ready queues and remove the coro */ 1431 /* alternative: look through all ready queues and remove the coro */
1116 LOCK;
1117 --coro_nready; 1432 --coro_nready;
1118 UNLOCK;
1119 } 1433 }
1120 else 1434 else
1121 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1122 1436
1123 if (coro->mainstack && coro->mainstack != main_mainstack) 1437 if (coro->mainstack && coro->mainstack != main_mainstack)
1124 { 1438 {
1125 struct coro temp; 1439 struct coro temp;
1126 1440
1127 if (coro->flags & CF_RUNNING) 1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1128 croak ("FATAL: tried to destroy currently running coroutine");
1129 1442
1130 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1131 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1132 1445
1133 coro_destroy (aTHX_ coro); 1446 coro_destruct (aTHX_ coro);
1134 1447
1135 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1448 load_perl (aTHX_ &temp);
1136 1449
1137 coro->mainstack = 0; 1450 coro->slot = 0;
1138 } 1451 }
1139 1452
1140 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv);
1141 SvREFCNT_dec (coro->args); 1455 SvREFCNT_dec (coro->args);
1456 SvREFCNT_dec (CORO_THROW);
1142 1457
1143 if (coro->next) coro->next->prev = coro->prev; 1458 if (coro->next) coro->next->prev = coro->prev;
1144 if (coro->prev) coro->prev->next = coro->next; 1459 if (coro->prev) coro->prev->next = coro->next;
1145 if (coro == coro_first) coro_first = coro->next; 1460 if (coro == coro_first) coro_first = coro->next;
1146 1461
… …
1184# define MGf_DUP 0 1499# define MGf_DUP 0
1185#endif 1500#endif
1186}; 1501};
1187 1502
1188static void 1503static void
1189prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1504prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1190{ 1505{
1191 ta->prev = SvSTATE (prev_sv); 1506 ta->prev = SvSTATE (prev_sv);
1192 ta->next = SvSTATE (next_sv); 1507 ta->next = SvSTATE (next_sv);
1193 TRANSFER_CHECK (*ta); 1508 TRANSFER_CHECK (*ta);
1194} 1509}
1195 1510
1196static void 1511static void
1197api_transfer (SV *prev_sv, SV *next_sv) 1512api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1198{ 1513{
1199 dTHX;
1200 struct transfer_args ta; 1514 struct coro_transfer_args ta;
1201 1515
1202 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1203 TRANSFER (ta); 1517 TRANSFER (ta, 1);
1518}
1519
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1204} 1541}
1205 1542
1206/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1207 1544
1208static void 1545INLINE void
1209coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1210{ 1547{
1211 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1212} 1549}
1213 1550
1214static SV * 1551INLINE SV *
1215coro_deq (pTHX_ int min_prio) 1552coro_deq (pTHX)
1216{ 1553{
1217 int prio = PRIO_MAX - PRIO_MIN; 1554 int prio;
1218 1555
1219 min_prio -= PRIO_MIN;
1220 if (min_prio < 0)
1221 min_prio = 0;
1222
1223 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1224 if (AvFILLp (coro_ready [prio]) >= 0) 1557 if (AvFILLp (coro_ready [prio]) >= 0)
1225 return av_shift (coro_ready [prio]); 1558 return av_shift (coro_ready [prio]);
1226 1559
1227 return 0; 1560 return 0;
1228} 1561}
1229 1562
1230static int 1563static int
1231api_ready (SV *coro_sv) 1564api_ready (pTHX_ SV *coro_sv)
1232{ 1565{
1233 dTHX;
1234 struct coro *coro; 1566 struct coro *coro;
1567 SV *sv_hook;
1568 void (*xs_hook)(void);
1235 1569
1236 if (SvROK (coro_sv)) 1570 if (SvROK (coro_sv))
1237 coro_sv = SvRV (coro_sv); 1571 coro_sv = SvRV (coro_sv);
1238 1572
1239 coro = SvSTATE (coro_sv); 1573 coro = SvSTATE (coro_sv);
… …
1241 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1242 return 0; 1576 return 0;
1243 1577
1244 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1245 1579
1246 LOCK; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1247 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1582
1583 coro_enq (aTHX_ coro);
1248 ++coro_nready; 1584 ++coro_nready;
1249 UNLOCK; 1585
1586 if (sv_hook)
1587 {
1588 dSP;
1589
1590 ENTER;
1591 SAVETMPS;
1592
1593 PUSHMARK (SP);
1594 PUTBACK;
1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1596
1597 FREETMPS;
1598 LEAVE;
1599 }
1600
1601 if (xs_hook)
1602 xs_hook ();
1250 1603
1251 return 1; 1604 return 1;
1252} 1605}
1253 1606
1254static int 1607static int
1255api_is_ready (SV *coro_sv) 1608api_is_ready (pTHX_ SV *coro_sv)
1256{ 1609{
1257 dTHX;
1258 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1610 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1259} 1611}
1260 1612
1261static void 1613INLINE void
1262prepare_schedule (pTHX_ struct transfer_args *ta) 1614prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1263{ 1615{
1264 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1265 1617
1266 for (;;) 1618 for (;;)
1267 { 1619 {
1268 LOCK;
1269 next_sv = coro_deq (aTHX_ PRIO_MIN); 1620 next_sv = coro_deq (aTHX);
1270 1621
1271 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1272 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1273 { 1624 {
1274 dSP; 1625 dSP;
1275 UNLOCK;
1276 1626
1277 ENTER; 1627 ENTER;
1278 SAVETMPS; 1628 SAVETMPS;
1279 1629
1280 PUSHMARK (SP); 1630 PUSHMARK (SP);
1281 PUTBACK; 1631 PUTBACK;
1282 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1283 1633
1284 FREETMPS; 1634 FREETMPS;
1285 LEAVE; 1635 LEAVE;
1286 continue; 1636 continue;
1287 } 1637 }
1288 1638
1289 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1290 1640
1291 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1292 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1293 { 1643 {
1294 UNLOCK;
1295 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1296 /* coro_nready is already taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1297 continue; 1646 continue;
1298 } 1647 }
1299 1648
1300 --coro_nready; 1649 --coro_nready;
1301 UNLOCK;
1302 break; 1650 break;
1303 } 1651 }
1304 1652
1305 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1306 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1307 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1308 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1309 assert (ta->next->flags & CF_READY); 1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1310 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1311 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1312 1660
1313 LOCK;
1314 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1315 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1316 UNLOCK;
1317} 1663}
1318 1664
1319static void 1665INLINE void
1320prepare_cede (pTHX_ struct transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1321{ 1667{
1322 api_ready (coro_current); 1668 api_ready (aTHX_ coro_current);
1323 prepare_schedule (aTHX_ ta); 1669 prepare_schedule (aTHX_ ta);
1324} 1670}
1325 1671
1672INLINE void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{
1675 SV *prev = SvRV (coro_current);
1676
1677 if (coro_nready)
1678 {
1679 prepare_schedule (aTHX_ ta);
1680 api_ready (aTHX_ prev);
1681 }
1682 else
1683 prepare_nop (aTHX_ ta);
1684}
1685
1686static void
1687api_schedule (pTHX)
1688{
1689 struct coro_transfer_args ta;
1690
1691 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1);
1693}
1694
1326static int 1695static int
1327prepare_cede_notself (pTHX_ struct transfer_args *ta) 1696api_cede (pTHX)
1328{ 1697{
1329 if (coro_nready) 1698 struct coro_transfer_args ta;
1330 { 1699
1331 SV *prev = SvRV (coro_current);
1332 prepare_schedule (aTHX_ ta); 1700 prepare_cede (aTHX_ &ta);
1333 api_ready (prev); 1701
1702 if (expect_true (ta.prev != ta.next))
1703 {
1704 TRANSFER (ta, 1);
1334 return 1; 1705 return 1;
1335 } 1706 }
1336 else 1707 else
1337 return 0; 1708 return 0;
1338} 1709}
1339 1710
1340static void
1341api_schedule (void)
1342{
1343 dTHX;
1344 struct transfer_args ta;
1345
1346 prepare_schedule (aTHX_ &ta);
1347 TRANSFER (ta);
1348}
1349
1350static int 1711static int
1351api_cede (void) 1712api_cede_notself (pTHX)
1352{ 1713{
1353 dTHX; 1714 if (coro_nready)
1715 {
1354 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1355 1717
1356 prepare_cede (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1357
1358 if (expect_true (ta.prev != ta.next))
1359 {
1360 TRANSFER (ta); 1719 TRANSFER (ta, 1);
1361 return 1; 1720 return 1;
1362 } 1721 }
1363 else 1722 else
1364 return 0; 1723 return 0;
1365} 1724}
1366 1725
1367static int 1726static void
1368api_cede_notself (void)
1369{
1370 dTHX;
1371 struct transfer_args ta;
1372
1373 if (prepare_cede_notself (aTHX_ &ta))
1374 {
1375 TRANSFER (ta);
1376 return 1;
1377 }
1378 else
1379 return 0;
1380}
1381
1382static void
1383api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1384{ 1728{
1385 dTHX;
1386 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1387 1730
1388 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1389 { 1732 {
1390 if (!coro->cctx) 1733 if (!coro->cctx)
1391 coro->cctx = cctx_new (); 1734 coro->cctx = cctx_new_run ();
1392 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1393 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1394 1737
1395 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1396 } 1739 }
1397 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1398 { 1741 {
1399 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1742 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1400 1743
1401 if (coro->flags & CF_RUNNING) 1744 if (coro->flags & CF_RUNNING)
1402 PL_runops = RUNOPS_DEFAULT; 1745 PL_runops = RUNOPS_DEFAULT;
1403 else 1746 else
1404 coro->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1748 }
1749}
1750
1751/*****************************************************************************/
1752/* rouse callback */
1753
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755
1756static void
1757coro_rouse_callback (pTHX_ CV *cv)
1758{
1759 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG;
1761
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1405 } 1763 {
1764 /* first call, set args */
1765 int i;
1766 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768
1769 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772
1773 /* better take a full copy of the arguments */
1774 while (items--)
1775 av_store (av, items, newSVsv (ST (items)));
1776 }
1777
1778 XSRETURN_EMPTY;
1406} 1779}
1780
1781static int
1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1783{
1784 SV *data = (SV *)frame->data;
1785
1786 if (CORO_THROW)
1787 return 0;
1788
1789 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1790 return 1;
1791
1792 /* now push all results on the stack */
1793 {
1794 dSP;
1795 AV *av = (AV *)SvRV (data);
1796 int i;
1797
1798 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801
1802 /* we have stolen the elements, so ste length to zero and free */
1803 AvFILLp (av) = -1;
1804 av_undef (av);
1805
1806 PUTBACK;
1807 }
1808
1809 return 0;
1810}
1811
1812static void
1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 SV *cb;
1816
1817 if (items)
1818 cb = arg [0];
1819 else
1820 {
1821 struct coro *coro = SvSTATE_current;
1822
1823 if (!coro->rouse_cb)
1824 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1825
1826 cb = sv_2mortal (coro->rouse_cb);
1827 coro->rouse_cb = 0;
1828 }
1829
1830 if (!SvROK (cb)
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,");
1834
1835 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait;
1842 }
1843}
1844
1845static SV *
1846coro_new_rouse_cb (pTHX)
1847{
1848 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1852
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */
1855
1856 SvREFCNT_dec (coro->rouse_cb);
1857 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1858
1859 return cb;
1860}
1861
1862/*****************************************************************************/
1863/* schedule-like-function opcode (SLF) */
1864
1865static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1866static const CV *slf_cv;
1867static SV **slf_argv;
1868static int slf_argc, slf_arga; /* count, allocated */
1869static I32 slf_ax; /* top of stack, for restore */
1870
1871/* this restores the stack in the case we patched the entersub, to */
1872/* recreate the stack frame as perl will on following calls */
1873/* since entersub cleared the stack */
1874static OP *
1875pp_restore (pTHX)
1876{
1877 int i;
1878 SV **SP = PL_stack_base + slf_ax;
1879
1880 PUSHMARK (SP);
1881
1882 EXTEND (SP, slf_argc + 1);
1883
1884 for (i = 0; i < slf_argc; ++i)
1885 PUSHs (sv_2mortal (slf_argv [i]));
1886
1887 PUSHs ((SV *)CvGV (slf_cv));
1888
1889 RETURNOP (slf_restore.op_first);
1890}
1891
1892static void
1893slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1894{
1895 SV **arg = (SV **)slf_frame.data;
1896
1897 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1898}
1899
1900static void
1901slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1902{
1903 if (items != 2)
1904 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1905
1906 frame->prepare = slf_prepare_transfer;
1907 frame->check = slf_check_nop;
1908 frame->data = (void *)arg; /* let's hope it will stay valid */
1909}
1910
1911static void
1912slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1913{
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop;
1916}
1917
1918static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop;
1923}
1924
1925static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{
1928 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop;
1930}
1931
1932/*
1933 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same
1935 * stack offset
1936 * SLF stands for "schedule-like-function".
1937 */
1938static OP *
1939pp_slf (pTHX)
1940{
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942
1943 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare))
1947 {
1948 /* first iteration */
1949 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */
1952 SV *gv = *sp;
1953
1954 /* do a quick consistency check on the "function" object, and if it isn't */
1955 /* for us, divert to the real entersub */
1956 if (SvTYPE (gv) != SVt_PVGV
1957 || !GvCV (gv)
1958 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1959 return PL_ppaddr[OP_ENTERSUB](aTHX);
1960
1961 if (!(PL_op->op_flags & OPf_STACKED))
1962 {
1963 /* ampersand-form of call, use @_ instead of stack */
1964 AV *av = GvAV (PL_defgv);
1965 arg = AvARRAY (av);
1966 items = AvFILLp (av) + 1;
1967 }
1968
1969 /* now call the init function, which needs to set up slf_frame */
1970 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1971 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1972
1973 /* pop args */
1974 SP = PL_stack_base + POPMARK;
1975
1976 PUTBACK;
1977 }
1978
1979 /* now that we have a slf_frame, interpret it! */
1980 /* we use a callback system not to make the code needlessly */
1981 /* complicated, but so we can run multiple perl coros from one cctx */
1982
1983 do
1984 {
1985 struct coro_transfer_args ta;
1986
1987 slf_frame.prepare (aTHX_ &ta);
1988 TRANSFER (ta, 0);
1989
1990 checkmark = PL_stack_sp - PL_stack_base;
1991 }
1992 while (slf_frame.check (aTHX_ &slf_frame));
1993
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995
1996 /* exception handling */
1997 if (expect_false (CORO_THROW))
1998 {
1999 SV *exception = sv_2mortal (CORO_THROW);
2000
2001 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception);
2003 croak (0);
2004 }
2005
2006 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR)
2009 {
2010 dSP;
2011 SV **bot = PL_stack_base + checkmark;
2012
2013 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */
2016 bot [1] = *sp;
2017
2018 SP = bot + 1;
2019
2020 PUTBACK;
2021 }
2022
2023 return NORMAL;
2024}
2025
2026static void
2027api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2028{
2029 int i;
2030 SV **arg = PL_stack_base + ax;
2031 int items = PL_stack_sp - arg + 1;
2032
2033 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2034
2035 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2036 && PL_op->op_ppaddr != pp_slf)
2037 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2038
2039 CvFLAGS (cv) |= CVf_SLF;
2040 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2041 slf_cv = cv;
2042
2043 /* we patch the op, and then re-run the whole call */
2044 /* we have to put the same argument on the stack for this to work */
2045 /* and this will be done by pp_restore */
2046 slf_restore.op_next = (OP *)&slf_restore;
2047 slf_restore.op_type = OP_CUSTOM;
2048 slf_restore.op_ppaddr = pp_restore;
2049 slf_restore.op_first = PL_op;
2050
2051 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2052
2053 if (PL_op->op_flags & OPf_STACKED)
2054 {
2055 if (items > slf_arga)
2056 {
2057 slf_arga = items;
2058 free (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *));
2060 }
2061
2062 slf_argc = items;
2063
2064 for (i = 0; i < items; ++i)
2065 slf_argv [i] = SvREFCNT_inc (arg [i]);
2066 }
2067 else
2068 slf_argc = 0;
2069
2070 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2072
2073 PL_op = (OP *)&slf_restore;
2074}
2075
2076/*****************************************************************************/
2077/* PerlIO::cede */
2078
2079typedef struct
2080{
2081 PerlIOBuf base;
2082 NV next, every;
2083} PerlIOCede;
2084
2085static IV
2086PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2087{
2088 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2089
2090 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2091 self->next = nvtime () + self->every;
2092
2093 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2094}
2095
2096static SV *
2097PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2098{
2099 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2100
2101 return newSVnv (self->every);
2102}
2103
2104static IV
2105PerlIOCede_flush (pTHX_ PerlIO *f)
2106{
2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2108 double now = nvtime ();
2109
2110 if (now >= self->next)
2111 {
2112 api_cede (aTHX);
2113 self->next = now + self->every;
2114 }
2115
2116 return PerlIOBuf_flush (aTHX_ f);
2117}
2118
2119static PerlIO_funcs PerlIO_cede =
2120{
2121 sizeof(PerlIO_funcs),
2122 "cede",
2123 sizeof(PerlIOCede),
2124 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2125 PerlIOCede_pushed,
2126 PerlIOBuf_popped,
2127 PerlIOBuf_open,
2128 PerlIOBase_binmode,
2129 PerlIOCede_getarg,
2130 PerlIOBase_fileno,
2131 PerlIOBuf_dup,
2132 PerlIOBuf_read,
2133 PerlIOBuf_unread,
2134 PerlIOBuf_write,
2135 PerlIOBuf_seek,
2136 PerlIOBuf_tell,
2137 PerlIOBuf_close,
2138 PerlIOCede_flush,
2139 PerlIOBuf_fill,
2140 PerlIOBase_eof,
2141 PerlIOBase_error,
2142 PerlIOBase_clearerr,
2143 PerlIOBase_setlinebuf,
2144 PerlIOBuf_get_base,
2145 PerlIOBuf_bufsiz,
2146 PerlIOBuf_get_ptr,
2147 PerlIOBuf_get_cnt,
2148 PerlIOBuf_set_ptrcnt,
2149};
2150
2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
2153
2154static SV *
2155coro_waitarray_new (pTHX_ int count)
2156{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV ();
2159 SV **ary;
2160
2161 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary;
2164 /*AvARRAY (av) = ary;*/
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2166 AvMAX (av) = 1;
2167 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count);
2169
2170 return newRV_noinc ((SV *)av);
2171}
2172
2173/* semaphore */
2174
2175static void
2176coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2177{
2178 SV *count_sv = AvARRAY (av)[0];
2179 IV count = SvIVX (count_sv);
2180
2181 count += adjust;
2182 SvIVX (count_sv) = count;
2183
2184 /* now wake up as many waiters as are expected to lock */
2185 while (count > 0 && AvFILLp (av) > 0)
2186 {
2187 SV *cb;
2188
2189 /* swap first two elements so we can shift a waiter */
2190 AvARRAY (av)[0] = AvARRAY (av)[1];
2191 AvARRAY (av)[1] = count_sv;
2192 cb = av_shift (av);
2193
2194 if (SvOBJECT (cb))
2195 {
2196 api_ready (aTHX_ cb);
2197 --count;
2198 }
2199 else if (SvTYPE (cb) == SVt_PVCV)
2200 {
2201 dSP;
2202 PUSHMARK (SP);
2203 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2204 PUTBACK;
2205 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2206 }
2207
2208 SvREFCNT_dec (cb);
2209 }
2210}
2211
2212static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2214{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2217}
2218
2219static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{
2222 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0];
2224
2225 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW)
2227 return 0;
2228 else if (SvIVX (count_sv) > 0)
2229 {
2230 SvSTATE_current->on_destroy = 0;
2231
2232 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else
2235 coro_semaphore_adjust (aTHX_ av, 0);
2236
2237 return 0;
2238 }
2239 else
2240 {
2241 int i;
2242 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */
2245
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current))
2248 return 1;
2249
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2251 return 1;
2252 }
2253}
2254
2255static int
2256slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2257{
2258 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2259}
2260
2261static int
2262slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2263{
2264 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2265}
2266
2267static void
2268slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 AV *av = (AV *)SvRV (arg [0]);
2271
2272 if (SvIVX (AvARRAY (av)[0]) > 0)
2273 {
2274 frame->data = (void *)av;
2275 frame->prepare = prepare_nop;
2276 }
2277 else
2278 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2287 }
2288}
2289
2290static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2294 frame->check = slf_check_semaphore_down;
2295}
2296
2297static void
2298slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2299{
2300 if (items >= 2)
2301 {
2302 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (arg [1]);
2305
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2307
2308 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0);
2310
2311 frame->prepare = prepare_nop;
2312 frame->check = slf_check_nop;
2313 }
2314 else
2315 {
2316 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2317 frame->check = slf_check_semaphore_wait;
2318 }
2319}
2320
2321/* signal */
2322
2323static void
2324coro_signal_wake (pTHX_ AV *av, int count)
2325{
2326 SvIVX (AvARRAY (av)[0]) = 0;
2327
2328 /* now signal count waiters */
2329 while (count > 0 && AvFILLp (av) > 0)
2330 {
2331 SV *cb;
2332
2333 /* swap first two elements so we can shift a waiter */
2334 cb = AvARRAY (av)[0];
2335 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb;
2337
2338 cb = av_shift (av);
2339
2340 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */
2342 SvREFCNT_dec (cb);
2343
2344 --count;
2345 }
2346}
2347
2348static int
2349slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2350{
2351 /* if we are about to throw, also stop waiting */
2352 return SvROK ((SV *)frame->data) && !CORO_THROW;
2353}
2354
2355static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{
2358 AV *av = (AV *)SvRV (arg [0]);
2359
2360 if (SvIVX (AvARRAY (av)[0]))
2361 {
2362 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop;
2365 }
2366 else
2367 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2369
2370 av_push (av, waiter);
2371
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule;
2374 frame->check = slf_check_signal_wait;
2375 }
2376}
2377
2378/*****************************************************************************/
2379/* Coro::AIO */
2380
2381#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2382
2383/* helper storage struct */
2384struct io_state
2385{
2386 int errorno;
2387 I32 laststype; /* U16 in 5.10.0 */
2388 int laststatval;
2389 Stat_t statcache;
2390};
2391
2392static void
2393coro_aio_callback (pTHX_ CV *cv)
2394{
2395 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG;
2397 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state));
2399
2400 av_extend (state, items);
2401
2402 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv);
2405
2406 {
2407 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2408
2409 data->errorno = errno;
2410 data->laststype = PL_laststype;
2411 data->laststatval = PL_laststatval;
2412 data->statcache = PL_statcache;
2413 }
2414
2415 /* now build the result vector out of all the parameters and the data_sv */
2416 {
2417 int i;
2418
2419 for (i = 0; i < items; ++i)
2420 av_push (state, SvREFCNT_inc_NN (ST (i)));
2421 }
2422
2423 av_push (state, data_sv);
2424
2425 api_ready (aTHX_ coro);
2426 SvREFCNT_dec (coro);
2427 SvREFCNT_dec ((AV *)state);
2428}
2429
2430static int
2431slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2432{
2433 AV *state = (AV *)frame->data;
2434
2435 /* if we are about to throw, return early */
2436 /* this does not cancel the aio request, but at least */
2437 /* it quickly returns */
2438 if (CORO_THROW)
2439 return 0;
2440
2441 /* one element that is an RV? repeat! */
2442 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2443 return 1;
2444
2445 /* restore status */
2446 {
2447 SV *data_sv = av_pop (state);
2448 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2449
2450 errno = data->errorno;
2451 PL_laststype = data->laststype;
2452 PL_laststatval = data->laststatval;
2453 PL_statcache = data->statcache;
2454
2455 SvREFCNT_dec (data_sv);
2456 }
2457
2458 /* push result values */
2459 {
2460 dSP;
2461 int i;
2462
2463 EXTEND (SP, AvFILLp (state) + 1);
2464 for (i = 0; i <= AvFILLp (state); ++i)
2465 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2466
2467 PUTBACK;
2468 }
2469
2470 return 0;
2471}
2472
2473static void
2474slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2475{
2476 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2477 SV *coro_hv = SvRV (coro_current);
2478 struct coro *coro = SvSTATE_hv (coro_hv);
2479
2480 /* put our coroutine id on the state arg */
2481 av_push (state, SvREFCNT_inc_NN (coro_hv));
2482
2483 /* first see whether we have a non-zero priority and set it as AIO prio */
2484 if (coro->prio)
2485 {
2486 dSP;
2487
2488 static SV *prio_cv;
2489 static SV *prio_sv;
2490
2491 if (expect_false (!prio_cv))
2492 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0);
2495 }
2496
2497 PUSHMARK (SP);
2498 sv_setiv (prio_sv, coro->prio);
2499 XPUSHs (prio_sv);
2500
2501 PUTBACK;
2502 call_sv (prio_cv, G_VOID | G_DISCARD);
2503 }
2504
2505 /* now call the original request */
2506 {
2507 dSP;
2508 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2509 int i;
2510
2511 PUSHMARK (SP);
2512
2513 /* first push all args to the stack */
2514 EXTEND (SP, items + 1);
2515
2516 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]);
2518
2519 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521
2522 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 }
2526
2527 /* now that the requets is going, we loop toll we have a result */
2528 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req;
2531}
2532
2533static void
2534coro_aio_req_xs (pTHX_ CV *cv)
2535{
2536 dXSARGS;
2537
2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2539
2540 XSRETURN_EMPTY;
2541}
2542
2543/*****************************************************************************/
1407 2544
1408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1409 2546
1410PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1411 2548
1412BOOT: 2549BOOT:
1413{ 2550{
1414#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1415 MUTEX_INIT (&coro_mutex); 2552# if CORO_PTHREAD
2553 coro_thx = PERL_GET_CONTEXT;
2554# endif
1416#endif 2555#endif
1417 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
1418 2557
1419 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1420 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2560
2561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2562 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2563 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2564
2565 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2566 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2567 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1421 2568
1422 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2569 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1423 2570
1424 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2571 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1425 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2572 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1430 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
1431 2578
1432 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
1433 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
1434 2581
2582 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf,
2587 newSVpv ("coro_slf", 0), 0);
2588
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf,
2591 newSVpv ("coro schedule like function", 0), 0);
2592 }
2593
1435 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
2595 coroapi.rev = CORO_API_REVISION;
2596
1436 coroapi.transfer = api_transfer; 2597 coroapi.transfer = api_transfer;
2598
2599 coroapi.sv_state = SvSTATE_;
2600 coroapi.execute_slf = api_execute_slf;
2601 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself;
2605
2606 {
2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2608
2609 if (!svp) croak ("Time::HiRes is required");
2610 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2611
2612 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2613 }
1437 2614
1438 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1439} 2616}
1440 2617
1441SV * 2618SV *
1442new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
1443 CODE: 2622 CODE:
1444{ 2623{
1445 struct coro *coro; 2624 struct coro *coro;
2625 MAGIC *mg;
1446 HV *hv; 2626 HV *hv;
2627 CV *cb;
1447 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (ST (1));
2633
2634 if (CvISXSUB (cb))
2635 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2636
2637 if (!CvROOT (cb))
2638 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2639 }
1448 2640
1449 Newz (0, coro, 1, struct coro); 2641 Newz (0, coro, 1, struct coro);
1450 coro->args = newAV (); 2642 coro->args = newAV ();
1451 coro->flags = CF_NEW; 2643 coro->flags = CF_NEW;
1452 2644
1453 if (coro_first) coro_first->prev = coro; 2645 if (coro_first) coro_first->prev = coro;
1454 coro->next = coro_first; 2646 coro->next = coro_first;
1455 coro_first = coro; 2647 coro_first = coro;
1456 2648
1457 coro->hv = hv = newHV (); 2649 coro->hv = hv = newHV ();
1458 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2650 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2651 mg->mg_flags |= MGf_DUP;
1459 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2652 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1460 2653
2654 if (items > 1)
2655 {
1461 av_extend (coro->args, items - 1); 2656 av_extend (coro->args, items - 1 + ix);
2657
2658 if (ix)
2659 {
2660 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2661 cb = coro_run_cv;
2662 }
2663
2664 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2665
1462 for (i = 1; i < items; i++) 2666 for (i = 2; i < items; i++)
1463 av_push (coro->args, newSVsv (ST (i))); 2667 av_push (coro->args, newSVsv (ST (i)));
2668 }
1464} 2669}
1465 OUTPUT: 2670 OUTPUT:
1466 RETVAL 2671 RETVAL
1467 2672
1468# these not obviously related functions are all rolled into the same xs
1469# function to increase chances that they all will call transfer with the same
1470# stack offset
1471void 2673void
1472_set_stacklevel (...) 2674transfer (...)
1473 ALIAS: 2675 PROTOTYPE: $$
1474 Coro::State::transfer = 1 2676 CODE:
1475 Coro::schedule = 2 2677 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1476 Coro::cede = 3
1477 Coro::cede_notself = 4
1478 CODE:
1479{
1480 struct transfer_args ta;
1481
1482 switch (ix)
1483 {
1484 case 0:
1485 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1486 ta.next = 0;
1487 break;
1488
1489 case 1:
1490 if (items != 2)
1491 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1492
1493 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494 break;
1495
1496 case 2:
1497 prepare_schedule (aTHX_ &ta);
1498 break;
1499
1500 case 3:
1501 prepare_cede (aTHX_ &ta);
1502 break;
1503
1504 case 4:
1505 if (!prepare_cede_notself (aTHX_ &ta))
1506 XSRETURN_EMPTY;
1507
1508 break;
1509 }
1510
1511 BARRIER;
1512 TRANSFER (ta);
1513
1514 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1515 XSRETURN_YES;
1516}
1517 2678
1518bool 2679bool
1519_destroy (SV *coro_sv) 2680_destroy (SV *coro_sv)
1520 CODE: 2681 CODE:
1521 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2682 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522 OUTPUT: 2683 OUTPUT:
1523 RETVAL 2684 RETVAL
1524 2685
1525void 2686void
1526_exit (code) 2687_exit (int code)
1527 int code
1528 PROTOTYPE: $ 2688 PROTOTYPE: $
1529 CODE: 2689 CODE:
1530 _exit (code); 2690 _exit (code);
1531 2691
1532int 2692int
1533cctx_stacksize (int new_stacksize = 0) 2693cctx_stacksize (int new_stacksize = 0)
2694 PROTOTYPE: ;$
1534 CODE: 2695 CODE:
1535 RETVAL = coro_stacksize; 2696 RETVAL = cctx_stacksize;
1536 if (new_stacksize) 2697 if (new_stacksize)
2698 {
1537 coro_stacksize = new_stacksize; 2699 cctx_stacksize = new_stacksize;
2700 ++cctx_gen;
2701 }
1538 OUTPUT: 2702 OUTPUT:
1539 RETVAL 2703 RETVAL
1540 2704
1541int 2705int
2706cctx_max_idle (int max_idle = 0)
2707 PROTOTYPE: ;$
2708 CODE:
2709 RETVAL = cctx_max_idle;
2710 if (max_idle > 1)
2711 cctx_max_idle = max_idle;
2712 OUTPUT:
2713 RETVAL
2714
2715int
1542cctx_count () 2716cctx_count ()
2717 PROTOTYPE:
1543 CODE: 2718 CODE:
1544 RETVAL = cctx_count; 2719 RETVAL = cctx_count;
1545 OUTPUT: 2720 OUTPUT:
1546 RETVAL 2721 RETVAL
1547 2722
1548int 2723int
1549cctx_idle () 2724cctx_idle ()
2725 PROTOTYPE:
1550 CODE: 2726 CODE:
1551 RETVAL = cctx_idle; 2727 RETVAL = cctx_idle;
1552 OUTPUT: 2728 OUTPUT:
1553 RETVAL 2729 RETVAL
1554 2730
1555void 2731void
1556list () 2732list ()
2733 PROTOTYPE:
1557 PPCODE: 2734 PPCODE:
1558{ 2735{
1559 struct coro *coro; 2736 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next) 2737 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv) 2738 if (coro->hv)
… …
1566call (Coro::State coro, SV *coderef) 2743call (Coro::State coro, SV *coderef)
1567 ALIAS: 2744 ALIAS:
1568 eval = 1 2745 eval = 1
1569 CODE: 2746 CODE:
1570{ 2747{
1571 if (coro->mainstack) 2748 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572 { 2749 {
1573 struct coro temp; 2750 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575 2751
1576 if (!(coro->flags & CF_RUNNING)) 2752 if (!(coro->flags & CF_RUNNING))
1577 { 2753 {
2754 PUTBACK;
1578 save_perl (aTHX_ &temp); 2755 save_perl (aTHX_ &temp);
1579 load_perl (aTHX_ coro); 2756 load_perl (aTHX_ coro);
1580 } 2757 }
1581 2758
1582 { 2759 {
1583 dSP; 2760 dSP;
1584 ENTER; 2761 ENTER;
1585 SAVETMPS; 2762 SAVETMPS;
2763 PUTBACK;
2764 PUSHSTACK;
1586 PUSHMARK (SP); 2765 PUSHMARK (SP);
1587 PUTBACK; 2766
1588 if (ix) 2767 if (ix)
1589 eval_sv (coderef, 0); 2768 eval_sv (coderef, 0);
1590 else 2769 else
1591 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2770 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2771
2772 POPSTACK;
1592 SPAGAIN; 2773 SPAGAIN;
1593 FREETMPS; 2774 FREETMPS;
1594 LEAVE; 2775 LEAVE;
1595 PUTBACK; 2776 PUTBACK;
1596 } 2777 }
1597 2778
1598 if (!(coro->flags & CF_RUNNING)) 2779 if (!(coro->flags & CF_RUNNING))
1599 { 2780 {
1600 save_perl (aTHX_ coro); 2781 save_perl (aTHX_ coro);
1601 load_perl (aTHX_ &temp); 2782 load_perl (aTHX_ &temp);
2783 SPAGAIN;
1602 } 2784 }
1603 } 2785 }
1604} 2786}
1605 2787
1606SV * 2788SV *
… …
1615 RETVAL = boolSV (coro->flags & ix); 2797 RETVAL = boolSV (coro->flags & ix);
1616 OUTPUT: 2798 OUTPUT:
1617 RETVAL 2799 RETVAL
1618 2800
1619void 2801void
2802throw (Coro::State self, SV *throw = &PL_sv_undef)
2803 PROTOTYPE: $;$
2804 CODE:
2805{
2806 struct coro *current = SvSTATE_current;
2807 SV **throwp = self == current ? &CORO_THROW : &self->except;
2808 SvREFCNT_dec (*throwp);
2809 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2810}
2811
2812void
1620api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2814 PROTOTYPE: $;$
2815 C_ARGS: aTHX_ coro, flags
1621 2816
1622SV * 2817SV *
1623has_stack (Coro::State coro) 2818has_cctx (Coro::State coro)
1624 PROTOTYPE: $ 2819 PROTOTYPE: $
1625 CODE: 2820 CODE:
1626 RETVAL = boolSV (!!coro->cctx); 2821 RETVAL = boolSV (!!coro->cctx);
1627 OUTPUT: 2822 OUTPUT:
1628 RETVAL 2823 RETVAL
… …
1633 CODE: 2828 CODE:
1634 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2829 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1635 OUTPUT: 2830 OUTPUT:
1636 RETVAL 2831 RETVAL
1637 2832
1638IV 2833UV
1639rss (Coro::State coro) 2834rss (Coro::State coro)
1640 PROTOTYPE: $ 2835 PROTOTYPE: $
1641 ALIAS: 2836 ALIAS:
1642 usecount = 1 2837 usecount = 1
1643 CODE: 2838 CODE:
… …
1647 case 1: RETVAL = coro->usecount; break; 2842 case 1: RETVAL = coro->usecount; break;
1648 } 2843 }
1649 OUTPUT: 2844 OUTPUT:
1650 RETVAL 2845 RETVAL
1651 2846
2847void
2848force_cctx ()
2849 PROTOTYPE:
2850 CODE:
2851 SvSTATE_current->cctx->idle_sp = 0;
2852
2853void
2854swap_defsv (Coro::State self)
2855 PROTOTYPE: $
2856 ALIAS:
2857 swap_defav = 1
2858 CODE:
2859 if (!self->slot)
2860 croak ("cannot swap state with coroutine that has no saved state,");
2861 else
2862 {
2863 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2864 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2865
2866 SV *tmp = *src; *src = *dst; *dst = tmp;
2867 }
2868
1652 2869
1653MODULE = Coro::State PACKAGE = Coro 2870MODULE = Coro::State PACKAGE = Coro
1654 2871
1655BOOT: 2872BOOT:
1656{ 2873{
1657 int i; 2874 int i;
1658 2875
1659 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1660 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1661 av_async_pool = get_av ("Coro::async_pool", TRUE); 2876 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1662 2877 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2878 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2879 coro_run_cv = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
1663 coro_current = get_sv ("Coro::current", FALSE); 2880 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
1664 SvREADONLY_on (coro_current); 2881 SvREADONLY_on (coro_current);
1665 2882
1666 coro_stash = gv_stashpv ("Coro", TRUE); 2883 coro_stash = gv_stashpv ("Coro", TRUE);
1667 2884
1668 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2885 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1669 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2886 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1670 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2887 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1671 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2888 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1674 2891
1675 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2892 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1676 coro_ready[i] = newAV (); 2893 coro_ready[i] = newAV ();
1677 2894
1678 { 2895 {
1679 SV *sv = perl_get_sv("Coro::API", 1); 2896 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1680 2897
1681 coroapi.schedule = api_schedule; 2898 coroapi.schedule = api_schedule;
1682 coroapi.cede = api_cede; 2899 coroapi.cede = api_cede;
1683 coroapi.cede_notself = api_cede_notself; 2900 coroapi.cede_notself = api_cede_notself;
1684 coroapi.ready = api_ready; 2901 coroapi.ready = api_ready;
1685 coroapi.is_ready = api_is_ready; 2902 coroapi.is_ready = api_is_ready;
1686 coroapi.nready = &coro_nready; 2903 coroapi.nready = coro_nready;
1687 coroapi.current = coro_current; 2904 coroapi.current = coro_current;
1688 2905
1689 GCoroAPI = &coroapi; 2906 /*GCoroAPI = &coroapi;*/
1690 sv_setiv (sv, (IV)&coroapi); 2907 sv_setiv (sv, (IV)&coroapi);
1691 SvREADONLY_on (sv); 2908 SvREADONLY_on (sv);
1692 } 2909 }
1693} 2910}
2911
2912void
2913schedule (...)
2914 CODE:
2915 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2916
2917void
2918cede (...)
2919 CODE:
2920 CORO_EXECUTE_SLF_XS (slf_init_cede);
2921
2922void
2923cede_notself (...)
2924 CODE:
2925 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1694 2926
1695void 2927void
1696_set_current (SV *current) 2928_set_current (SV *current)
1697 PROTOTYPE: $ 2929 PROTOTYPE: $
1698 CODE: 2930 CODE:
1699 SvREFCNT_dec (SvRV (coro_current)); 2931 SvREFCNT_dec (SvRV (coro_current));
1700 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2932 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2933
2934void
2935_set_readyhook (SV *hook)
2936 PROTOTYPE: $
2937 CODE:
2938 SvREFCNT_dec (coro_readyhook);
2939 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1701 2940
1702int 2941int
1703prio (Coro::State coro, int newprio = 0) 2942prio (Coro::State coro, int newprio = 0)
2943 PROTOTYPE: $;$
1704 ALIAS: 2944 ALIAS:
1705 nice = 1 2945 nice = 1
1706 CODE: 2946 CODE:
1707{ 2947{
1708 RETVAL = coro->prio; 2948 RETVAL = coro->prio;
… …
1723 2963
1724SV * 2964SV *
1725ready (SV *self) 2965ready (SV *self)
1726 PROTOTYPE: $ 2966 PROTOTYPE: $
1727 CODE: 2967 CODE:
1728 RETVAL = boolSV (api_ready (self)); 2968 RETVAL = boolSV (api_ready (aTHX_ self));
1729 OUTPUT: 2969 OUTPUT:
1730 RETVAL 2970 RETVAL
1731 2971
1732int 2972int
1733nready (...) 2973nready (...)
… …
1735 CODE: 2975 CODE:
1736 RETVAL = coro_nready; 2976 RETVAL = coro_nready;
1737 OUTPUT: 2977 OUTPUT:
1738 RETVAL 2978 RETVAL
1739 2979
1740void
1741throw (Coro::State self, SV *throw = &PL_sv_undef)
1742 PROTOTYPE: $;$
1743 CODE:
1744 SvREFCNT_dec (self->throw);
1745 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1746
1747# for async_pool speedup 2980# for async_pool speedup
1748void 2981void
1749_pool_1 (SV *cb) 2982_pool_1 (SV *cb)
1750 CODE: 2983 CODE:
1751{ 2984{
1752 struct coro *coro = SvSTATE (coro_current);
1753 HV *hv = (HV *)SvRV (coro_current); 2985 HV *hv = (HV *)SvRV (coro_current);
2986 struct coro *coro = SvSTATE_hv ((SV *)hv);
1754 AV *defav = GvAV (PL_defgv); 2987 AV *defav = GvAV (PL_defgv);
1755 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2988 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1756 AV *invoke_av; 2989 AV *invoke_av;
1757 int i, len; 2990 int i, len;
1758 2991
1759 if (!invoke) 2992 if (!invoke)
2993 {
2994 SV *old = PL_diehook;
2995 PL_diehook = 0;
2996 SvREFCNT_dec (old);
1760 croak ("\3async_pool terminate\2\n"); 2997 croak ("\3async_pool terminate\2\n");
2998 }
1761 2999
1762 SvREFCNT_dec (coro->saved_deffh); 3000 SvREFCNT_dec (coro->saved_deffh);
1763 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3001 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1764 3002
1765 hv_store (hv, "desc", sizeof ("desc") - 1, 3003 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 3004 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767 3005
1768 invoke_av = (AV *)SvRV (invoke); 3006 invoke_av = (AV *)SvRV (invoke);
… …
1772 3010
1773 if (len > 0) 3011 if (len > 0)
1774 { 3012 {
1775 av_fill (defav, len - 1); 3013 av_fill (defav, len - 1);
1776 for (i = 0; i < len; ++i) 3014 for (i = 0; i < len; ++i)
1777 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3015 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1778 } 3016 }
1779
1780 SvREFCNT_dec (invoke);
1781} 3017}
1782 3018
1783void 3019void
1784_pool_2 (SV *cb) 3020_pool_2 (SV *cb)
1785 CODE: 3021 CODE:
1786{ 3022{
1787 struct coro *coro = SvSTATE (coro_current); 3023 HV *hv = (HV *)SvRV (coro_current);
3024 struct coro *coro = SvSTATE_hv ((SV *)hv);
1788 3025
1789 sv_setsv (cb, &PL_sv_undef); 3026 sv_setsv (cb, &PL_sv_undef);
1790 3027
1791 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3028 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1792 coro->saved_deffh = 0; 3029 coro->saved_deffh = 0;
1793 3030
1794 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 3031 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1795 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 3032 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3033 {
3034 SV *old = PL_diehook;
3035 PL_diehook = 0;
3036 SvREFCNT_dec (old);
1796 croak ("\3async_pool terminate\2\n"); 3037 croak ("\3async_pool terminate\2\n");
3038 }
1797 3039
1798 av_clear (GvAV (PL_defgv)); 3040 av_clear (GvAV (PL_defgv));
1799 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3041 hv_store (hv, "desc", sizeof ("desc") - 1,
1800 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3042 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1801 3043
1802 coro->prio = 0; 3044 coro->prio = 0;
1803 3045
1804 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3046 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1805 api_trace (coro_current, 0); 3047 api_trace (aTHX_ coro_current, 0);
1806 3048
1807 av_push (av_async_pool, newSVsv (coro_current)); 3049 av_push (av_async_pool, newSVsv (coro_current));
1808} 3050}
1809 3051
1810
1811MODULE = Coro::State PACKAGE = Coro::AIO
1812
1813SV * 3052SV *
1814_get_state () 3053rouse_cb ()
3054 PROTOTYPE:
1815 CODE: 3055 CODE:
1816{ 3056 RETVAL = coro_new_rouse_cb (aTHX);
1817 struct io_state *data;
1818
1819 RETVAL = newSV (sizeof (struct io_state));
1820 data = (struct io_state *)SvPVX (RETVAL);
1821 SvCUR_set (RETVAL, sizeof (struct io_state));
1822 SvPOK_only (RETVAL);
1823
1824 data->errorno = errno;
1825 data->laststype = PL_laststype;
1826 data->laststatval = PL_laststatval;
1827 data->statcache = PL_statcache;
1828}
1829 OUTPUT: 3057 OUTPUT:
1830 RETVAL 3058 RETVAL
1831 3059
1832void 3060void
1833_set_state (char *data_) 3061rouse_wait (...)
1834 PROTOTYPE: $ 3062 PROTOTYPE: ;$
3063 PPCODE:
3064 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3065
3066
3067MODULE = Coro::State PACKAGE = PerlIO::cede
3068
3069BOOT:
3070 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3071
3072
3073MODULE = Coro::State PACKAGE = Coro::Semaphore
3074
3075SV *
3076new (SV *klass, SV *count = 0)
1835 CODE: 3077 CODE:
1836{ 3078 RETVAL = sv_bless (
1837 struct io_state *data = (void *)data_; 3079 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3080 GvSTASH (CvGV (cv))
3081 );
3082 OUTPUT:
3083 RETVAL
1838 3084
1839 errno = data->errorno; 3085# helper for Coro::Channel
1840 PL_laststype = data->laststype; 3086SV *
1841 PL_laststatval = data->laststatval; 3087_alloc (int count)
1842 PL_statcache = data->statcache; 3088 CODE:
1843} 3089 RETVAL = coro_waitarray_new (aTHX_ count);
3090 OUTPUT:
3091 RETVAL
1844 3092
3093SV *
3094count (SV *self)
3095 CODE:
3096 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3097 OUTPUT:
3098 RETVAL
3099
3100void
3101up (SV *self, int adjust = 1)
3102 ALIAS:
3103 adjust = 1
3104 CODE:
3105 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3106
3107void
3108down (...)
3109 CODE:
3110 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3111
3112void
3113wait (...)
3114 CODE:
3115 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3116
3117void
3118try (SV *self)
3119 PPCODE:
3120{
3121 AV *av = (AV *)SvRV (self);
3122 SV *count_sv = AvARRAY (av)[0];
3123 IV count = SvIVX (count_sv);
3124
3125 if (count > 0)
3126 {
3127 --count;
3128 SvIVX (count_sv) = count;
3129 XSRETURN_YES;
3130 }
3131 else
3132 XSRETURN_NO;
3133}
3134
3135void
3136waiters (SV *self)
3137 PPCODE:
3138{
3139 AV *av = (AV *)SvRV (self);
3140 int wcount = AvFILLp (av) + 1 - 1;
3141
3142 if (GIMME_V == G_SCALAR)
3143 XPUSHs (sv_2mortal (newSViv (wcount)));
3144 else
3145 {
3146 int i;
3147 EXTEND (SP, wcount);
3148 for (i = 1; i <= wcount; ++i)
3149 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3150 }
3151}
3152
3153MODULE = Coro::State PACKAGE = Coro::Signal
3154
3155SV *
3156new (SV *klass)
3157 CODE:
3158 RETVAL = sv_bless (
3159 coro_waitarray_new (aTHX_ 0),
3160 GvSTASH (CvGV (cv))
3161 );
3162 OUTPUT:
3163 RETVAL
3164
3165void
3166wait (...)
3167 CODE:
3168 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3169
3170void
3171broadcast (SV *self)
3172 CODE:
3173{
3174 AV *av = (AV *)SvRV (self);
3175 coro_signal_wake (aTHX_ av, AvFILLp (av));
3176}
3177
3178void
3179send (SV *self)
3180 CODE:
3181{
3182 AV *av = (AV *)SvRV (self);
3183
3184 if (AvFILLp (av))
3185 coro_signal_wake (aTHX_ av, 1);
3186 else
3187 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3188}
3189
3190IV
3191awaited (SV *self)
3192 CODE:
3193 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3194 OUTPUT:
3195 RETVAL
3196
3197
3198MODULE = Coro::State PACKAGE = Coro::AnyEvent
3199
3200BOOT:
3201 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3202
3203void
3204_schedule (...)
3205 CODE:
3206{
3207 static int incede;
3208
3209 api_cede_notself (aTHX);
3210
3211 ++incede;
3212 while (coro_nready >= incede && api_cede (aTHX))
3213 ;
3214
3215 sv_setsv (sv_activity, &PL_sv_undef);
3216 if (coro_nready >= incede)
3217 {
3218 PUSHMARK (SP);
3219 PUTBACK;
3220 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3221 }
3222
3223 --incede;
3224}
3225
3226
3227MODULE = Coro::State PACKAGE = Coro::AIO
3228
3229void
3230_register (char *target, char *proto, SV *req)
3231 CODE:
3232{
3233 CV *req_cv = coro_sv_2cv (req);
3234 /* newXSproto doesn't return the CV on 5.8 */
3235 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3236 sv_setpv ((SV *)slf_cv, proto);
3237 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3238}
3239

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