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Comparing Coro/Coro/State.xs (file contents):
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC vs.
Revision 1.292 by root, Tue Nov 18 06:09:35 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, don't ask
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
85#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
86# undef CORO_STACKGUARD 110# undef CORO_STACKGUARD
87#endif 111#endif
88 112
89#ifndef CORO_STACKGUARD 113#ifndef CORO_STACKGUARD
… …
95# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
96#endif 120#endif
97 121
98/* 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
99 * portable way as possible. */ 123 * portable way as possible. */
100#define dSTACKLEVEL volatile char stacklevel 124#if __GNUC__ >= 4
101#define STACKLEVEL ((void *)&stacklevel) 125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
126#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
128#endif
102 129
103#define IN_DESTRUCT (PL_main_cv == Nullcv) 130#define IN_DESTRUCT (PL_main_cv == Nullcv)
104 131
105#if __GNUC__ >= 3 132#if __GNUC__ >= 3
106# define attribute(x) __attribute__(x) 133# define attribute(x) __attribute__(x)
107# define BARRIER __asm__ __volatile__ ("" : : : "memory") 134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
108#else 136#else
109# define attribute(x) 137# define attribute(x)
110# define BARRIER 138# define expect(expr,value) (expr)
139# define INLINE static
111#endif 140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
112 144
113#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
114 146
115#include "CoroAPI.h" 147#include "CoroAPI.h"
116 148
117#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
118static perl_mutex coro_mutex; 150# if CORO_PTHREAD
119# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 151static void *coro_thx;
120# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
121#else
122# define LOCK (void)0
123# define UNLOCK (void)0
124#endif 152# endif
153#endif
125 154
126/* helper storage struct for Coro::AIO */ 155static double (*nvtime)(); /* so why doesn't it take void? */
127struct io_state
128{
129 int errorno;
130 I32 laststype;
131 int laststatval;
132 Stat_t statcache;
133};
134 156
157/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX);
160
161static U32 cctx_gen;
135static size_t coro_stacksize = CORO_STACKSIZE; 162static size_t cctx_stacksize = CORO_STACKSIZE;
136static struct CoroAPI coroapi; 163static struct CoroAPI coroapi;
137static AV *main_mainstack; /* used to differentiate between $main and others */ 164static AV *main_mainstack; /* used to differentiate between $main and others */
138static JMPENV *main_top_env; 165static JMPENV *main_top_env;
139static HV *coro_state_stash, *coro_stash; 166static HV *coro_state_stash, *coro_stash;
140static SV *coro_mortal; /* will be freed after next transfer */ 167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
141 168
142static GV *irsgv; /* $/ */ 169static GV *irsgv; /* $/ */
143static GV *stdoutgv; /* *STDOUT */ 170static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook;
172static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */
144 174
145/* async_pool helper stuff */ 175/* async_pool helper stuff */
146static SV *sv_pool_rss; 176static SV *sv_pool_rss;
147static SV *sv_pool_size; 177static SV *sv_pool_size;
148static AV *av_async_pool; 178static AV *av_async_pool;
179
180/* Coro::AnyEvent */
181static SV *sv_activity;
149 182
150static struct coro_cctx *cctx_first; 183static struct coro_cctx *cctx_first;
151static int cctx_count, cctx_idle; 184static int cctx_count, cctx_idle;
152 185
153enum { 186enum {
… …
158 CC_TRACE_LINE = 0x10, /* trace each statement */ 191 CC_TRACE_LINE = 0x10, /* trace each statement */
159 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
160}; 193};
161 194
162/* this is a structure representing a c-level coroutine */ 195/* this is a structure representing a c-level coroutine */
163typedef struct coro_cctx { 196typedef struct coro_cctx
197{
164 struct coro_cctx *next; 198 struct coro_cctx *next;
165 199
166 /* the stack */ 200 /* the stack */
167 void *sptr; 201 void *sptr;
168 size_t ssize; 202 size_t ssize;
… …
171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 205 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
172 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 206 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
173 JMPENV *top_env; 207 JMPENV *top_env;
174 coro_context cctx; 208 coro_context cctx;
175 209
210 U32 gen;
176#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
177 int valgrind_id; 212 int valgrind_id;
178#endif 213#endif
179 unsigned char flags; 214 unsigned char flags;
180} coro_cctx; 215} coro_cctx;
… …
184 CF_READY = 0x0002, /* coroutine is ready */ 219 CF_READY = 0x0002, /* coroutine is ready */
185 CF_NEW = 0x0004, /* has never been switched to */ 220 CF_NEW = 0x0004, /* has never been switched to */
186 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
187}; 222};
188 223
189/* this is a structure representing a perl-level coroutine */ 224/* the structure where most of the perl state is stored, overlaid on the cxstack */
190struct coro { 225typedef struct
191 /* the c coroutine allocated to this perl coroutine, if any */ 226{
192 coro_cctx *cctx; 227 SV *defsv;
193 228 AV *defav;
194 /* data associated with this coroutine (initial args) */ 229 SV *errsv;
195 AV *args; 230 SV *irsgv;
196 int refcnt;
197 int flags; /* CF_ flags */
198
199 /* optionally saved, might be zero */
200 AV *defav; /* @_ */
201 SV *defsv; /* $_ */
202 SV *errsv; /* $@ */
203 SV *deffh; /* default filehandle */
204 SV *irssv; /* $/ */
205 SV *irssv_sv; /* real $/ cache */
206
207#define VAR(name,type) type name; 231#define VAR(name,type) type name;
208# include "state.h" 232# include "state.h"
209#undef VAR 233#undef VAR
234} perl_slots;
235
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237
238/* this is a structure representing a perl-level coroutine */
239struct coro {
240 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx;
242
243 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */
247
248 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
210 253
211 /* statistics */ 254 /* statistics */
212 int usecount; /* number of transfers to this coro */ 255 int usecount; /* number of transfers to this coro */
213 256
214 /* coro process data */ 257 /* coro process data */
215 int prio; 258 int prio;
216 //SV *throw; 259 SV *throw; /* exception to be thrown */
217 260
218 /* async_pool */ 261 /* async_pool */
219 SV *saved_deffh; 262 SV *saved_deffh;
220 263
221 /* linked list */ 264 /* linked list */
222 struct coro *next, *prev; 265 struct coro *next, *prev;
223 HV *hv; /* the perl hash associated with this coro, if any */
224}; 266};
225 267
226typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
227typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
270
271/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
228 276
229/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
230 278
231#define PRIO_MAX 3 279#define PRIO_MAX 3
232#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
235#define PRIO_IDLE -3 283#define PRIO_IDLE -3
236#define PRIO_MIN -4 284#define PRIO_MIN -4
237 285
238/* for Coro.pm */ 286/* for Coro.pm */
239static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
240static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
241static int coro_nready;
242static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
243 292
244/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
294
295static SV *
296coro_get_sv (pTHX_ const char *name, int create)
297{
298#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create);
301#endif
302 return get_sv (name, create);
303}
304
305static AV *
306coro_get_av (pTHX_ const char *name, int create)
307{
308#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create);
311#endif
312 return get_av (name, create);
313}
314
315static HV *
316coro_get_hv (pTHX_ const char *name, int create)
317{
318#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create);
321#endif
322 return get_hv (name, create);
323}
245 324
246static AV * 325static AV *
247coro_clone_padlist (pTHX_ CV *cv) 326coro_clone_padlist (pTHX_ CV *cv)
248{ 327{
249 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
250 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
251 330
252 newpadlist = newAV (); 331 newpadlist = newAV ();
253 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
254#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
255 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
256#else 335#else
257 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
258#endif 337#endif
259 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
260 --AvFILLp (padlist); 339 --AvFILLp (padlist);
261 340
262 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
263 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
264 343
265 return newpadlist; 344 return newpadlist;
266} 345}
267 346
… …
297 376
298 /* casting is fun. */ 377 /* casting is fun. */
299 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
300 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
301 380
302 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
303 382
304 return 0; 383 return 0;
305} 384}
306 385
386#define CORO_MAGIC_type_cv 26
307#define PERL_MAGIC_coro PERL_MAGIC_ext 387#define CORO_MAGIC_type_state PERL_MAGIC_ext
308 388
309static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
310 393
311#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
312 SvMAGIC (cv) \ 396 ? SvMAGIC (sv) \
313 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 397 : mg_find (sv, type))
314 ? SvMAGIC (cv) \ 398
315 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
316 : 0 402 : 0)
317 403
318static struct coro * 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
319SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
320{ 409{
321 HV *stash; 410 HV *stash;
322 MAGIC *mg; 411 MAGIC *mg;
323 412
324 if (SvROK (coro)) 413 if (SvROK (coro))
325 coro = SvRV (coro); 414 coro = SvRV (coro);
326 415
327 if (SvTYPE (coro) != SVt_PVHV) 416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
328 croak ("Coro::State object required"); 417 croak ("Coro::State object required");
329 418
330 stash = SvSTASH (coro); 419 stash = SvSTASH (coro);
331 if (stash != coro_stash && stash != coro_state_stash) 420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
332 { 421 {
333 /* very slow, but rare, check */ 422 /* very slow, but rare, check */
334 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
335 croak ("Coro::State object required"); 424 croak ("Coro::State object required");
336 } 425 }
337 426
338 mg = CORO_MAGIC (coro); 427 mg = CORO_MAGIC_state (coro);
339 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
340} 429}
341 430
342#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
343 432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436
344/* the next two functions merely cache the padlists */ 437/* the next two functions merely cache the padlists */
345static void 438static void
346get_padlist (pTHX_ CV *cv) 439get_padlist (pTHX_ CV *cv)
347{ 440{
348 MAGIC *mg = CORO_MAGIC (cv); 441 MAGIC *mg = CORO_MAGIC_cv (cv);
349 AV *av; 442 AV *av;
350 443
351 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 444 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
352 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 445 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
353 else 446 else
354 { 447 {
355#if CORO_PREFER_PERL_FUNCTIONS 448#if CORO_PREFER_PERL_FUNCTIONS
356 /* this is probably cleaner, but also slower? */ 449 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */
357 CV *cp = Perl_cv_clone (cv); 451 CV *cp = Perl_cv_clone (cv);
358 CvPADLIST (cv) = CvPADLIST (cp); 452 CvPADLIST (cv) = CvPADLIST (cp);
359 CvPADLIST (cp) = 0; 453 CvPADLIST (cp) = 0;
360 SvREFCNT_dec (cp); 454 SvREFCNT_dec (cp);
361#else 455#else
… …
365} 459}
366 460
367static void 461static void
368put_padlist (pTHX_ CV *cv) 462put_padlist (pTHX_ CV *cv)
369{ 463{
370 MAGIC *mg = CORO_MAGIC (cv); 464 MAGIC *mg = CORO_MAGIC_cv (cv);
371 AV *av; 465 AV *av;
372 466
373 if (!mg) 467 if (expect_false (!mg))
374 { 468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
375 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
376 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
377 mg->mg_virtual = &vtbl_coro;
378 mg->mg_obj = (SV *)newAV ();
379 }
380 469
381 av = (AV *)mg->mg_obj; 470 av = (AV *)mg->mg_obj;
382 471
383 if (AvFILLp (av) >= AvMAX (av)) 472 if (expect_false (AvFILLp (av) >= AvMAX (av)))
384 av_extend (av, AvMAX (av) + 1); 473 av_extend (av, AvMAX (av) + 1);
385 474
386 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
387} 476}
388 477
389/** load & save, init *******************************************************/ 478/** load & save, init *******************************************************/
390 479
391static void 480static void
392load_perl (pTHX_ Coro__State c) 481load_perl (pTHX_ Coro__State c)
393{ 482{
483 perl_slots *slot = c->slot;
484 c->slot = 0;
485
486 PL_mainstack = c->mainstack;
487
488 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv;
492
394#define VAR(name,type) PL_ ## name = c->name; 493 #define VAR(name,type) PL_ ## name = slot->name;
395# include "state.h" 494 # include "state.h"
396#undef VAR 495 #undef VAR
397
398 GvSV (PL_defgv) = c->defsv;
399 GvAV (PL_defgv) = c->defav;
400 GvSV (PL_errgv) = c->errsv;
401 GvSV (irsgv) = c->irssv_sv;
402 496
403 { 497 {
404 dSP; 498 dSP;
499
405 CV *cv; 500 CV *cv;
406 501
407 /* now do the ugly restore mess */ 502 /* now do the ugly restore mess */
408 while ((cv = (CV *)POPs)) 503 while (expect_true (cv = (CV *)POPs))
409 { 504 {
410 put_padlist (aTHX_ cv); /* mark this padlist as available */ 505 put_padlist (aTHX_ cv); /* mark this padlist as available */
411 CvDEPTH (cv) = PTR2IV (POPs); 506 CvDEPTH (cv) = PTR2IV (POPs);
412 CvPADLIST (cv) = (AV *)POPs; 507 CvPADLIST (cv) = (AV *)POPs;
413 } 508 }
414 509
415 PUTBACK; 510 PUTBACK;
416 } 511 }
512
513 slf_frame = c->slf_frame;
514 coro_throw = c->throw;
417} 515}
418 516
419static void 517static void
420save_perl (pTHX_ Coro__State c) 518save_perl (pTHX_ Coro__State c)
421{ 519{
520 c->throw = coro_throw;
521 c->slf_frame = slf_frame;
522
422 { 523 {
423 dSP; 524 dSP;
424 I32 cxix = cxstack_ix; 525 I32 cxix = cxstack_ix;
425 PERL_CONTEXT *ccstk = cxstack; 526 PERL_CONTEXT *ccstk = cxstack;
426 PERL_SI *top_si = PL_curstackinfo; 527 PERL_SI *top_si = PL_curstackinfo;
… …
432 533
433 XPUSHs (Nullsv); 534 XPUSHs (Nullsv);
434 /* this loop was inspired by pp_caller */ 535 /* this loop was inspired by pp_caller */
435 for (;;) 536 for (;;)
436 { 537 {
437 while (cxix >= 0) 538 while (expect_true (cxix >= 0))
438 { 539 {
439 PERL_CONTEXT *cx = &ccstk[cxix--]; 540 PERL_CONTEXT *cx = &ccstk[cxix--];
440 541
441 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
442 { 543 {
443 CV *cv = cx->blk_sub.cv; 544 CV *cv = cx->blk_sub.cv;
444 545
445 if (CvDEPTH (cv)) 546 if (expect_true (CvDEPTH (cv)))
446 { 547 {
447 EXTEND (SP, 3); 548 EXTEND (SP, 3);
448 PUSHs ((SV *)CvPADLIST (cv)); 549 PUSHs ((SV *)CvPADLIST (cv));
449 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
450 PUSHs ((SV *)cv); 551 PUSHs ((SV *)cv);
451 552
452 CvDEPTH (cv) = 0; 553 CvDEPTH (cv) = 0;
453 get_padlist (aTHX_ cv); 554 get_padlist (aTHX_ cv);
454 } 555 }
455 } 556 }
456 } 557 }
457 558
458 if (top_si->si_type == PERLSI_MAIN) 559 if (expect_true (top_si->si_type == PERLSI_MAIN))
459 break; 560 break;
460 561
461 top_si = top_si->si_prev; 562 top_si = top_si->si_prev;
462 ccstk = top_si->si_cxstack; 563 ccstk = top_si->si_cxstack;
463 cxix = top_si->si_cxix; 564 cxix = top_si->si_cxix;
464 } 565 }
465 566
466 PUTBACK; 567 PUTBACK;
467 } 568 }
468 569
570 /* allocate some space on the context stack for our purposes */
571 /* we manually unroll here, as usually 2 slots is enough */
572 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 {
576 int i;
577 for (i = 3; i < SLOT_COUNT; ++i)
578 CXINC;
579 }
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */
581
582 c->mainstack = PL_mainstack;
583
584 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586
469 c->defav = GvAV (PL_defgv); 587 slot->defav = GvAV (PL_defgv);
470 c->defsv = DEFSV; 588 slot->defsv = DEFSV;
471 c->errsv = ERRSV; 589 slot->errsv = ERRSV;
472 c->irssv_sv = GvSV (irsgv); 590 slot->irsgv = GvSV (irsgv);
473 591
474#define VAR(name,type)c->name = PL_ ## name; 592 #define VAR(name,type) slot->name = PL_ ## name;
475# include "state.h" 593 # include "state.h"
476#undef VAR 594 #undef VAR
595 }
477} 596}
478 597
479/* 598/*
480 * allocate various perl stacks. This is an exact copy 599 * allocate various perl stacks. This is almost an exact copy
481 * of perl.c:init_stacks, except that it uses less memory 600 * of perl.c:init_stacks, except that it uses less memory
482 * on the (sometimes correct) assumption that coroutines do 601 * on the (sometimes correct) assumption that coroutines do
483 * not usually need a lot of stackspace. 602 * not usually need a lot of stackspace.
484 */ 603 */
485#if CORO_PREFER_PERL_FUNCTIONS 604#if CORO_PREFER_PERL_FUNCTIONS
486# define coro_init_stacks init_stacks 605# define coro_init_stacks init_stacks
487#else 606#else
488static void 607static void
489coro_init_stacks (pTHX) 608coro_init_stacks (pTHX)
490{ 609{
491 PL_curstackinfo = new_stackinfo(64, 6); 610 PL_curstackinfo = new_stackinfo(32, 8);
492 PL_curstackinfo->si_type = PERLSI_MAIN; 611 PL_curstackinfo->si_type = PERLSI_MAIN;
493 PL_curstack = PL_curstackinfo->si_stack; 612 PL_curstack = PL_curstackinfo->si_stack;
494 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
495 614
496 PL_stack_base = AvARRAY(PL_curstack); 615 PL_stack_base = AvARRAY(PL_curstack);
497 PL_stack_sp = PL_stack_base; 616 PL_stack_sp = PL_stack_base;
498 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 617 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
499 618
500 New(50,PL_tmps_stack,64,SV*); 619 New(50,PL_tmps_stack,32,SV*);
501 PL_tmps_floor = -1; 620 PL_tmps_floor = -1;
502 PL_tmps_ix = -1; 621 PL_tmps_ix = -1;
503 PL_tmps_max = 64; 622 PL_tmps_max = 32;
504 623
505 New(54,PL_markstack,16,I32); 624 New(54,PL_markstack,16,I32);
506 PL_markstack_ptr = PL_markstack; 625 PL_markstack_ptr = PL_markstack;
507 PL_markstack_max = PL_markstack + 16; 626 PL_markstack_max = PL_markstack + 16;
508 627
509#ifdef SET_MARK_OFFSET 628#ifdef SET_MARK_OFFSET
510 SET_MARK_OFFSET; 629 SET_MARK_OFFSET;
511#endif 630#endif
512 631
513 New(54,PL_scopestack,16,I32); 632 New(54,PL_scopestack,8,I32);
514 PL_scopestack_ix = 0; 633 PL_scopestack_ix = 0;
515 PL_scopestack_max = 16; 634 PL_scopestack_max = 8;
516 635
517 New(54,PL_savestack,64,ANY); 636 New(54,PL_savestack,24,ANY);
518 PL_savestack_ix = 0; 637 PL_savestack_ix = 0;
519 PL_savestack_max = 64; 638 PL_savestack_max = 24;
520 639
521#if !PERL_VERSION_ATLEAST (5,9,0) 640#if !PERL_VERSION_ATLEAST (5,10,0)
522 New(54,PL_retstack,4,OP*); 641 New(54,PL_retstack,4,OP*);
523 PL_retstack_ix = 0; 642 PL_retstack_ix = 0;
524 PL_retstack_max = 4; 643 PL_retstack_max = 4;
525#endif 644#endif
526} 645}
… …
528 647
529/* 648/*
530 * destroy the stacks, the callchain etc... 649 * destroy the stacks, the callchain etc...
531 */ 650 */
532static void 651static void
533coro_destroy_stacks (pTHX) 652coro_destruct_stacks (pTHX)
534{ 653{
535 while (PL_curstackinfo->si_next) 654 while (PL_curstackinfo->si_next)
536 PL_curstackinfo = PL_curstackinfo->si_next; 655 PL_curstackinfo = PL_curstackinfo->si_next;
537 656
538 while (PL_curstackinfo) 657 while (PL_curstackinfo)
… …
549 668
550 Safefree (PL_tmps_stack); 669 Safefree (PL_tmps_stack);
551 Safefree (PL_markstack); 670 Safefree (PL_markstack);
552 Safefree (PL_scopestack); 671 Safefree (PL_scopestack);
553 Safefree (PL_savestack); 672 Safefree (PL_savestack);
554#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
555 Safefree (PL_retstack); 674 Safefree (PL_retstack);
556#endif 675#endif
557} 676}
558 677
559static size_t 678static size_t
… …
561{ 680{
562 size_t rss = sizeof (*coro); 681 size_t rss = sizeof (*coro);
563 682
564 if (coro->mainstack) 683 if (coro->mainstack)
565 { 684 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
566 if (coro->flags & CF_RUNNING) 688 if (coro->flags & CF_RUNNING)
567 { 689 {
690 slot = &tmp_slot;
691
568 #define VAR(name,type)coro->name = PL_ ## name; 692 #define VAR(name,type) slot->name = PL_ ## name;
569 # include "state.h" 693 # include "state.h"
570 #undef VAR 694 #undef VAR
571 } 695 }
696 else
697 slot = coro->slot;
572 698
699 if (slot)
700 {
573 rss += sizeof (coro->curstackinfo); 701 rss += sizeof (slot->curstackinfo);
574 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
575 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
576 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
577 rss += coro->tmps_max * sizeof (SV *); 704 rss += slot->tmps_max * sizeof (SV *);
578 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
579 rss += coro->scopestack_max * sizeof (I32); 706 rss += slot->scopestack_max * sizeof (I32);
580 rss += coro->savestack_max * sizeof (ANY); 707 rss += slot->savestack_max * sizeof (ANY);
581 708
582#if !PERL_VERSION_ATLEAST (5,9,0) 709#if !PERL_VERSION_ATLEAST (5,10,0)
583 rss += coro->retstack_max * sizeof (OP *); 710 rss += slot->retstack_max * sizeof (OP *);
584#endif 711#endif
712 }
585 } 713 }
586 714
587 return rss; 715 return rss;
588} 716}
589 717
590/** coroutine stack handling ************************************************/ 718/** coroutine stack handling ************************************************/
591 719
720static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
721static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
722static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
723
724/* apparently < 5.8.8 */
725#ifndef MgPV_nolen_const
726#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
727 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
728 (const char*)(mg)->mg_ptr)
729#endif
730
731/*
732 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide
735 * readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */
592static void 740static int
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{
743 const char *s = MgPV_nolen_const (mg);
744
745 if (*s == '_')
746 {
747 SV **svp = 0;
748
749 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
750 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
751
752 if (svp)
753 {
754 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
755 return 0;
756 }
757 }
758
759 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
760}
761
762static int
763coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
764{
765 const char *s = MgPV_nolen_const (mg);
766
767 if (*s == '_')
768 {
769 SV **svp = 0;
770
771 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
772 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
773
774 if (svp)
775 {
776 SV *old = *svp;
777 *svp = 0;
778 SvREFCNT_dec (old);
779 return 0;
780 }
781 }
782
783 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
784}
785
786static int
787coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
788{
789 const char *s = MgPV_nolen_const (mg);
790
791 if (*s == '_')
792 {
793 SV **svp = 0;
794
795 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797
798 if (svp)
799 {
800 SV *old = *svp;
801 *svp = newSVsv (sv);
802 SvREFCNT_dec (old);
803 return 0;
804 }
805 }
806
807 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
808}
809
810static void
811prepare_nop (pTHX_ struct coro_transfer_args *ta)
812{
813 /* kind of mega-hacky, but works */
814 ta->next = ta->prev = (struct coro *)ta;
815}
816
817static int
818slf_check_nop (pTHX_ struct CoroSLF *frame)
819{
820 return 0;
821}
822
823static UNOP coro_setup_op;
824
825static void NOINLINE /* noinline to keep it out of the transfer fast path */
593coro_setup (pTHX_ struct coro *coro) 826coro_setup (pTHX_ struct coro *coro)
594{ 827{
595 /* 828 /*
596 * emulate part of the perl startup here. 829 * emulate part of the perl startup here.
597 */ 830 */
… …
600 PL_runops = RUNOPS_DEFAULT; 833 PL_runops = RUNOPS_DEFAULT;
601 PL_curcop = &PL_compiling; 834 PL_curcop = &PL_compiling;
602 PL_in_eval = EVAL_NULL; 835 PL_in_eval = EVAL_NULL;
603 PL_comppad = 0; 836 PL_comppad = 0;
604 PL_curpm = 0; 837 PL_curpm = 0;
838 PL_curpad = 0;
605 PL_localizing = 0; 839 PL_localizing = 0;
606 PL_dirty = 0; 840 PL_dirty = 0;
607 PL_restartop = 0; 841 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0;
844#endif
845
846 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
608 849
609 GvSV (PL_defgv) = NEWSV (0, 0); 850 GvSV (PL_defgv) = newSV (0);
610 GvAV (PL_defgv) = coro->args; coro->args = 0; 851 GvAV (PL_defgv) = coro->args; coro->args = 0;
611 GvSV (PL_errgv) = NEWSV (0, 0); 852 GvSV (PL_errgv) = newSV (0);
612 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
613 PL_rs = newSVsv (GvSV (irsgv)); 854 PL_rs = newSVsv (GvSV (irsgv));
614 PL_defoutgv = SvREFCNT_inc (stdoutgv); 855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
615 856
616 { 857 {
617 dSP; 858 dSP;
618 LOGOP myop; 859 UNOP myop;
619 860
620 Zero (&myop, 1, LOGOP); 861 Zero (&myop, 1, UNOP);
621 myop.op_next = Nullop; 862 myop.op_next = Nullop;
622 myop.op_flags = OPf_WANT_VOID; 863 myop.op_flags = OPf_WANT_VOID;
623 864
624 PUSHMARK (SP); 865 PUSHMARK (SP);
625 XPUSHs (av_shift (GvAV (PL_defgv))); 866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
626 PUTBACK; 867 PUTBACK;
627 PL_op = (OP *)&myop; 868 PL_op = (OP *)&myop;
628 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
629 SPAGAIN; 870 SPAGAIN;
630 } 871 }
631 872
632 ENTER; /* necessary e.g. for dounwind */ 873 /* this newly created coroutine might be run on an existing cctx which most
633} 874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
634 878
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM;
881 coro_setup_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op;
883
884 PL_op = (OP *)&coro_setup_op;
885
886 /* copy throw, in case it was set before coro_setup */
887 coro_throw = coro->throw;
888}
889
635static void 890static void
636coro_destroy (pTHX_ struct coro *coro) 891coro_destruct (pTHX_ struct coro *coro)
637{ 892{
638 if (!IN_DESTRUCT) 893 if (!IN_DESTRUCT)
639 { 894 {
640 /* restore all saved variables and stuff */ 895 /* restore all saved variables and stuff */
641 LEAVE_SCOPE (0); 896 LEAVE_SCOPE (0);
… …
657 SvREFCNT_dec (GvSV (PL_errgv)); 912 SvREFCNT_dec (GvSV (PL_errgv));
658 SvREFCNT_dec (PL_defoutgv); 913 SvREFCNT_dec (PL_defoutgv);
659 SvREFCNT_dec (PL_rs); 914 SvREFCNT_dec (PL_rs);
660 SvREFCNT_dec (GvSV (irsgv)); 915 SvREFCNT_dec (GvSV (irsgv));
661 916
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919
662 SvREFCNT_dec (coro->saved_deffh); 920 SvREFCNT_dec (coro->saved_deffh);
663 //SvREFCNT_dec (coro->throw); 921 SvREFCNT_dec (coro_throw);
664 922
665 coro_destroy_stacks (aTHX); 923 coro_destruct_stacks (aTHX);
666} 924}
667 925
668static void 926INLINE void
669free_coro_mortal (pTHX) 927free_coro_mortal (pTHX)
670{ 928{
671 if (coro_mortal) 929 if (expect_true (coro_mortal))
672 { 930 {
673 SvREFCNT_dec (coro_mortal); 931 SvREFCNT_dec (coro_mortal);
674 coro_mortal = 0; 932 coro_mortal = 0;
675 } 933 }
676} 934}
… …
678static int 936static int
679runops_trace (pTHX) 937runops_trace (pTHX)
680{ 938{
681 COP *oldcop = 0; 939 COP *oldcop = 0;
682 int oldcxix = -2; 940 int oldcxix = -2;
683 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
684 coro_cctx *cctx = coro->cctx; 942 coro_cctx *cctx = coro->cctx;
685 943
686 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
687 { 945 {
688 PERL_ASYNC_CHECK (); 946 PERL_ASYNC_CHECK ();
… …
705 bot = PL_stack_base + cx->blk_oldsp + 1; 963 bot = PL_stack_base + cx->blk_oldsp + 1;
706 top = cx->blk_gimme == G_ARRAY ? SP + 1 964 top = cx->blk_gimme == G_ARRAY ? SP + 1
707 : cx->blk_gimme == G_SCALAR ? bot + 1 965 : cx->blk_gimme == G_SCALAR ? bot + 1
708 : bot; 966 : bot;
709 967
968 av_extend (av, top - bot);
710 while (bot < top) 969 while (bot < top)
711 av_push (av, SvREFCNT_inc (*bot++)); 970 av_push (av, SvREFCNT_inc_NN (*bot++));
712 971
713 PL_runops = RUNOPS_DEFAULT; 972 PL_runops = RUNOPS_DEFAULT;
714 ENTER; 973 ENTER;
715 SAVETMPS; 974 SAVETMPS;
716 EXTEND (SP, 3); 975 EXTEND (SP, 3);
… …
754 SAVETMPS; 1013 SAVETMPS;
755 EXTEND (SP, 3); 1014 EXTEND (SP, 3);
756 PUSHMARK (SP); 1015 PUSHMARK (SP);
757 PUSHs (&PL_sv_yes); 1016 PUSHs (&PL_sv_yes);
758 PUSHs (fullname); 1017 PUSHs (fullname);
759 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
760 PUTBACK; 1019 PUTBACK;
761 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
762 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
763 SPAGAIN; 1022 SPAGAIN;
764 FREETMPS; 1023 FREETMPS;
… …
796 1055
797 TAINT_NOT; 1056 TAINT_NOT;
798 return 0; 1057 return 0;
799} 1058}
800 1059
801/* inject a fake call to Coro::State::_cctx_init into the execution */ 1060static struct coro_cctx *cctx_ssl_cctx;
802/* _cctx_init should be careful, as it could be called at almost any time */ 1061static struct CoroSLF cctx_ssl_frame;
803/* during execution of a perl program */ 1062
1063static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0;
1068}
1069
1070static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{
1073 *frame = cctx_ssl_frame;
1074
1075 return 1; /* execute the restored frame - there must be one */
1076}
1077
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */
804static void NOINLINE 1079static void NOINLINE
805prepare_cctx (pTHX_ coro_cctx *cctx) 1080cctx_prepare (pTHX_ coro_cctx *cctx)
806{ 1081{
807 dSP;
808 LOGOP myop;
809
810 PL_top_env = &PL_start_env; 1082 PL_top_env = &PL_start_env;
811 1083
812 if (cctx->flags & CC_TRACE) 1084 if (cctx->flags & CC_TRACE)
813 PL_runops = runops_trace; 1085 PL_runops = runops_trace;
814 1086
815 Zero (&myop, 1, LOGOP); 1087 /* we already must be in an SLF call, there is no other valid way
816 myop.op_next = PL_op; 1088 * that can lead to creation of a new cctx */
817 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
818 1091
819 PUSHMARK (SP); 1092 cctx_ssl_cctx = cctx;
820 EXTEND (SP, 2); 1093 cctx_ssl_frame = slf_frame;
821 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1094
822 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1095 slf_frame.prepare = slf_prepare_set_stacklevel;
823 PUTBACK; 1096 slf_frame.check = slf_check_set_stacklevel;
824 PL_op = (OP *)&myop; 1097}
825 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1098
826 SPAGAIN; 1099/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void
1101transfer_tail (pTHX)
1102{
1103 free_coro_mortal (aTHX);
827} 1104}
828 1105
829/* 1106/*
830 * this is a _very_ stripped down perl interpreter ;) 1107 * this is a _very_ stripped down perl interpreter ;)
831 */ 1108 */
832static void 1109static void
833coro_run (void *arg) 1110cctx_run (void *arg)
834{ 1111{
1112#ifdef USE_ITHREADS
1113# if CORO_PTHREAD
1114 PERL_SET_CONTEXT (coro_thx);
1115# endif
1116#endif
1117 {
835 dTHX; 1118 dTHX;
836 1119
837 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1120 /* normally we would need to skip the entersub here */
838 UNLOCK; 1121 /* not doing so will re-execute it, which is exactly what we want */
839
840 /* we now skip the entersub that lead to transfer() */
841 PL_op = PL_op->op_next; 1122 /* PL_nop = PL_nop->op_next */
842 1123
843 /* inject a fake subroutine call to cctx_init */ 1124 /* inject a fake subroutine call to cctx_init */
844 prepare_cctx (aTHX_ (coro_cctx *)arg); 1125 cctx_prepare (aTHX_ (coro_cctx *)arg);
845 1126
1127 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX);
1129
846 /* somebody or something will hit me for both perl_run and PL_restartop */ 1130 /* somebody or something will hit me for both perl_run and PL_restartop */
847 PL_restartop = PL_op; 1131 PL_restartop = PL_op;
848 perl_run (PL_curinterp); 1132 perl_run (PL_curinterp);
849 1133
850 /* 1134 /*
851 * If perl-run returns we assume exit() was being called or the coro 1135 * If perl-run returns we assume exit() was being called or the coro
852 * fell off the end, which seems to be the only valid (non-bug) 1136 * fell off the end, which seems to be the only valid (non-bug)
853 * reason for perl_run to return. We try to exit by jumping to the 1137 * reason for perl_run to return. We try to exit by jumping to the
854 * bootstrap-time "top" top_env, as we cannot restore the "main" 1138 * bootstrap-time "top" top_env, as we cannot restore the "main"
855 * coroutine as Coro has no such concept 1139 * coroutine as Coro has no such concept
856 */ 1140 */
857 PL_top_env = main_top_env; 1141 PL_top_env = main_top_env;
858 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 }
859} 1144}
860 1145
861static coro_cctx * 1146static coro_cctx *
862cctx_new () 1147cctx_new ()
863{ 1148{
864 coro_cctx *cctx; 1149 coro_cctx *cctx;
1150
1151 ++cctx_count;
1152 New (0, cctx, 1, coro_cctx);
1153
1154 cctx->gen = cctx_gen;
1155 cctx->flags = 0;
1156 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx only suitable as source */
1162static coro_cctx *
1163cctx_new_empty ()
1164{
1165 coro_cctx *cctx = cctx_new ();
1166
1167 cctx->sptr = 0;
1168 coro_create (&cctx->cctx, 0, 0, 0, 0);
1169
1170 return cctx;
1171}
1172
1173/* create a new cctx suitable as destination/running a perl interpreter */
1174static coro_cctx *
1175cctx_new_run ()
1176{
1177 coro_cctx *cctx = cctx_new ();
865 void *stack_start; 1178 void *stack_start;
866 size_t stack_size; 1179 size_t stack_size;
867 1180
868 ++cctx_count;
869
870 Newz (0, cctx, 1, coro_cctx);
871
872#if HAVE_MMAP 1181#if HAVE_MMAP
873
874 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1182 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
875 /* mmap supposedly does allocate-on-write for us */ 1183 /* mmap supposedly does allocate-on-write for us */
876 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1184 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
877 1185
878 if (cctx->sptr != (void *)-1) 1186 if (cctx->sptr != (void *)-1)
879 { 1187 {
880# if CORO_STACKGUARD 1188 #if CORO_STACKGUARD
881 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1189 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
882# endif 1190 #endif
883 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1191 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
884 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1192 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
885 cctx->flags |= CC_MAPPED; 1193 cctx->flags |= CC_MAPPED;
886 } 1194 }
887 else 1195 else
888#endif 1196#endif
889 { 1197 {
890 cctx->ssize = coro_stacksize * (long)sizeof (long); 1198 cctx->ssize = cctx_stacksize * (long)sizeof (long);
891 New (0, cctx->sptr, coro_stacksize, long); 1199 New (0, cctx->sptr, cctx_stacksize, long);
892 1200
893 if (!cctx->sptr) 1201 if (!cctx->sptr)
894 { 1202 {
895 perror ("FATAL: unable to allocate stack for coroutine"); 1203 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
896 _exit (EXIT_FAILURE); 1204 _exit (EXIT_FAILURE);
897 } 1205 }
898 1206
899 stack_start = cctx->sptr; 1207 stack_start = cctx->sptr;
900 stack_size = cctx->ssize; 1208 stack_size = cctx->ssize;
901 } 1209 }
902 1210
903 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1211 #if CORO_USE_VALGRIND
1212 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1213 #endif
1214
904 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1215 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
905 1216
906 return cctx; 1217 return cctx;
907} 1218}
908 1219
909static void 1220static void
… …
911{ 1222{
912 if (!cctx) 1223 if (!cctx)
913 return; 1224 return;
914 1225
915 --cctx_count; 1226 --cctx_count;
1227 coro_destroy (&cctx->cctx);
916 1228
1229 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr)
1231 {
917#if CORO_USE_VALGRIND 1232 #if CORO_USE_VALGRIND
918 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1233 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
919#endif 1234 #endif
920 1235
921#if HAVE_MMAP 1236#if HAVE_MMAP
922 if (cctx->flags & CC_MAPPED) 1237 if (cctx->flags & CC_MAPPED)
923 munmap (cctx->sptr, cctx->ssize); 1238 munmap (cctx->sptr, cctx->ssize);
924 else 1239 else
925#endif 1240#endif
926 Safefree (cctx->sptr); 1241 Safefree (cctx->sptr);
1242 }
927 1243
928 Safefree (cctx); 1244 Safefree (cctx);
929} 1245}
1246
1247/* wether this cctx should be destructed */
1248#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
930 1249
931static coro_cctx * 1250static coro_cctx *
932cctx_get (pTHX) 1251cctx_get (pTHX)
933{ 1252{
934 while (cctx_first) 1253 while (expect_true (cctx_first))
935 { 1254 {
936 coro_cctx *cctx = cctx_first; 1255 coro_cctx *cctx = cctx_first;
937 cctx_first = cctx->next; 1256 cctx_first = cctx->next;
938 --cctx_idle; 1257 --cctx_idle;
939 1258
940 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1259 if (expect_true (!CCTX_EXPIRED (cctx)))
941 return cctx; 1260 return cctx;
942 1261
943 cctx_destroy (cctx); 1262 cctx_destroy (cctx);
944 } 1263 }
945 1264
946 return cctx_new (); 1265 return cctx_new_run ();
947} 1266}
948 1267
949static void 1268static void
950cctx_put (coro_cctx *cctx) 1269cctx_put (coro_cctx *cctx)
951{ 1270{
1271 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1272
952 /* free another cctx if overlimit */ 1273 /* free another cctx if overlimit */
953 if (cctx_idle >= MAX_IDLE_CCTX) 1274 if (expect_false (cctx_idle >= cctx_max_idle))
954 { 1275 {
955 coro_cctx *first = cctx_first; 1276 coro_cctx *first = cctx_first;
956 cctx_first = first->next; 1277 cctx_first = first->next;
957 --cctx_idle; 1278 --cctx_idle;
958 1279
… …
964 cctx_first = cctx; 1285 cctx_first = cctx;
965} 1286}
966 1287
967/** coroutine switching *****************************************************/ 1288/** coroutine switching *****************************************************/
968 1289
969static void NOINLINE 1290static void
970transfer_check (pTHX_ struct coro *prev, struct coro *next) 1291transfer_check (pTHX_ struct coro *prev, struct coro *next)
971{ 1292{
972 if (prev != next) 1293 /* TODO: throwing up here is considered harmful */
1294
1295 if (expect_true (prev != next))
973 { 1296 {
974 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
975 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
976 1299
977 if (next->flags & CF_RUNNING) 1300 if (expect_false (next->flags & CF_RUNNING))
978 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
979 1302
980 if (next->flags & CF_DESTROYED) 1303 if (expect_false (next->flags & CF_DESTROYED))
981 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
982 1305
1306#if !PERL_VERSION_ATLEAST (5,10,0)
983 if (PL_lex_state != LEX_NOTPARSING) 1307 if (expect_false (PL_lex_state != LEX_NOTPARSING))
984 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif
985 } 1310 }
986} 1311}
987 1312
988/* always use the TRANSFER macro */ 1313/* always use the TRANSFER macro */
989static void NOINLINE 1314static void NOINLINE /* noinline so we have a fixed stackframe */
990transfer (pTHX_ struct coro *prev, struct coro *next) 1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
991{ 1316{
992 dSTACKLEVEL; 1317 dSTACKLEVEL;
993 1318
994 /* sometimes transfer is only called to set idle_sp */ 1319 /* sometimes transfer is only called to set idle_sp */
995 if (!next) 1320 if (expect_false (!next))
996 { 1321 {
997 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
998 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
999 } 1324 }
1000 else if (prev != next) 1325 else if (expect_true (prev != next))
1001 { 1326 {
1002 coro_cctx *prev__cctx; 1327 coro_cctx *prev__cctx;
1003 1328
1004 if (prev->flags & CF_NEW) 1329 if (expect_false (prev->flags & CF_NEW))
1005 { 1330 {
1006 /* create a new empty context */ 1331 /* create a new empty/source context */
1007 Newz (0, prev->cctx, 1, coro_cctx); 1332 prev->cctx = cctx_new_empty ();
1008 prev->flags &= ~CF_NEW; 1333 prev->flags &= ~CF_NEW;
1009 prev->flags |= CF_RUNNING; 1334 prev->flags |= CF_RUNNING;
1010 } 1335 }
1011 1336
1012 prev->flags &= ~CF_RUNNING; 1337 prev->flags &= ~CF_RUNNING;
1013 next->flags |= CF_RUNNING; 1338 next->flags |= CF_RUNNING;
1014 1339
1015 LOCK; 1340 /* first get rid of the old state */
1341 save_perl (aTHX_ prev);
1016 1342
1017 if (next->flags & CF_NEW) 1343 if (expect_false (next->flags & CF_NEW))
1018 { 1344 {
1019 /* need to start coroutine */ 1345 /* need to start coroutine */
1020 next->flags &= ~CF_NEW; 1346 next->flags &= ~CF_NEW;
1021 /* first get rid of the old state */
1022 save_perl (aTHX_ prev);
1023 /* setup coroutine call */ 1347 /* setup coroutine call */
1024 coro_setup (aTHX_ next); 1348 coro_setup (aTHX_ next);
1025 } 1349 }
1026 else 1350 else
1351 load_perl (aTHX_ next);
1352
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */
1356 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel
1358 && !(prev__cctx->flags & CC_TRACE)
1359 && !force_cctx
1360 ))
1027 { 1361 {
1028 /* coroutine already started */
1029 save_perl (aTHX_ prev);
1030 load_perl (aTHX_ next);
1031 }
1032
1033 prev__cctx = prev->cctx;
1034
1035 /* possibly "free" the cctx */
1036 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1037 {
1038 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1039 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1040 1364
1041 prev->cctx = 0; 1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1370 if (!next->cctx)
1371 next->cctx = cctx_get (aTHX);
1042 1372
1043 cctx_put (prev__cctx); 1373 cctx_put (prev__cctx);
1044 } 1374 }
1045 1375
1046 ++next->usecount; 1376 ++next->usecount;
1047 1377
1048 if (!next->cctx) 1378 if (expect_true (!next->cctx))
1049 next->cctx = cctx_get (aTHX); 1379 next->cctx = cctx_get (aTHX);
1050 1380
1051 if (prev__cctx != next->cctx) 1381 if (expect_false (prev__cctx != next->cctx))
1052 { 1382 {
1053 prev__cctx->top_env = PL_top_env; 1383 prev__cctx->top_env = PL_top_env;
1054 PL_top_env = next->cctx->top_env; 1384 PL_top_env = next->cctx->top_env;
1055 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1056 } 1386 }
1057 1387
1058 free_coro_mortal (aTHX); 1388 transfer_tail (aTHX);
1059 UNLOCK;
1060 } 1389 }
1061} 1390}
1062 1391
1063struct transfer_args
1064{
1065 struct coro *prev, *next;
1066};
1067
1068#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1069#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1070 1394
1071/** high level stuff ********************************************************/ 1395/** high level stuff ********************************************************/
1072 1396
1073static int 1397static int
1074coro_state_destroy (pTHX_ struct coro *coro) 1398coro_state_destroy (pTHX_ struct coro *coro)
1075{ 1399{
1076 if (coro->flags & CF_DESTROYED) 1400 if (coro->flags & CF_DESTROYED)
1077 return 0; 1401 return 0;
1402
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro);
1078 1405
1079 coro->flags |= CF_DESTROYED; 1406 coro->flags |= CF_DESTROYED;
1080 1407
1081 if (coro->flags & CF_READY) 1408 if (coro->flags & CF_READY)
1082 { 1409 {
1083 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1410 /* reduce nready, as destroying a ready coro effectively unreadies it */
1084 /* alternative: look through all ready queues and remove the coro */ 1411 /* alternative: look through all ready queues and remove the coro */
1085 LOCK;
1086 --coro_nready; 1412 --coro_nready;
1087 UNLOCK;
1088 } 1413 }
1089 else 1414 else
1090 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1091 1416
1092 if (coro->mainstack && coro->mainstack != main_mainstack) 1417 if (coro->mainstack && coro->mainstack != main_mainstack)
1093 { 1418 {
1094 struct coro temp; 1419 struct coro temp;
1095 1420
1096 if (coro->flags & CF_RUNNING) 1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1097 croak ("FATAL: tried to destroy currently running coroutine");
1098 1422
1099 save_perl (aTHX_ &temp); 1423 save_perl (aTHX_ &temp);
1100 load_perl (aTHX_ coro); 1424 load_perl (aTHX_ coro);
1101 1425
1102 coro_destroy (aTHX_ coro); 1426 coro_destruct (aTHX_ coro);
1103 1427
1104 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1428 load_perl (aTHX_ &temp);
1105 1429
1106 coro->mainstack = 0; 1430 coro->slot = 0;
1107 } 1431 }
1108 1432
1109 cctx_destroy (coro->cctx); 1433 cctx_destroy (coro->cctx);
1110 SvREFCNT_dec (coro->args); 1434 SvREFCNT_dec (coro->args);
1111 1435
… …
1153# define MGf_DUP 0 1477# define MGf_DUP 0
1154#endif 1478#endif
1155}; 1479};
1156 1480
1157static void 1481static void
1158prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1482prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1159{ 1483{
1160 ta->prev = SvSTATE (prev_sv); 1484 ta->prev = SvSTATE (prev_sv);
1161 ta->next = SvSTATE (next_sv); 1485 ta->next = SvSTATE (next_sv);
1162 TRANSFER_CHECK (*ta); 1486 TRANSFER_CHECK (*ta);
1163} 1487}
1164 1488
1165static void 1489static void
1166api_transfer (SV *prev_sv, SV *next_sv) 1490api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1167{ 1491{
1168 dTHX;
1169 struct transfer_args ta; 1492 struct coro_transfer_args ta;
1170 1493
1171 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1494 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1172 TRANSFER (ta); 1495 TRANSFER (ta, 1);
1173} 1496}
1174 1497
1175/** Coro ********************************************************************/ 1498/** Coro ********************************************************************/
1176 1499
1177static void 1500INLINE void
1178coro_enq (pTHX_ SV *coro_sv) 1501coro_enq (pTHX_ struct coro *coro)
1179{ 1502{
1180 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1181} 1504}
1182 1505
1183static SV * 1506INLINE SV *
1184coro_deq (pTHX_ int min_prio) 1507coro_deq (pTHX)
1185{ 1508{
1186 int prio = PRIO_MAX - PRIO_MIN; 1509 int prio;
1187 1510
1188 min_prio -= PRIO_MIN;
1189 if (min_prio < 0)
1190 min_prio = 0;
1191
1192 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1193 if (AvFILLp (coro_ready [prio]) >= 0) 1512 if (AvFILLp (coro_ready [prio]) >= 0)
1194 return av_shift (coro_ready [prio]); 1513 return av_shift (coro_ready [prio]);
1195 1514
1196 return 0; 1515 return 0;
1197} 1516}
1198 1517
1199static int 1518static int
1200api_ready (SV *coro_sv) 1519api_ready (pTHX_ SV *coro_sv)
1201{ 1520{
1202 dTHX;
1203 struct coro *coro; 1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1204 1524
1205 if (SvROK (coro_sv)) 1525 if (SvROK (coro_sv))
1206 coro_sv = SvRV (coro_sv); 1526 coro_sv = SvRV (coro_sv);
1207 1527
1208 coro = SvSTATE (coro_sv); 1528 coro = SvSTATE (coro_sv);
… …
1210 if (coro->flags & CF_READY) 1530 if (coro->flags & CF_READY)
1211 return 0; 1531 return 0;
1212 1532
1213 coro->flags |= CF_READY; 1533 coro->flags |= CF_READY;
1214 1534
1215 LOCK; 1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1216 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro);
1217 ++coro_nready; 1539 ++coro_nready;
1218 UNLOCK; 1540
1541 if (sv_hook)
1542 {
1543 dSP;
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1219 1558
1220 return 1; 1559 return 1;
1221} 1560}
1222 1561
1223static int 1562static int
1224api_is_ready (SV *coro_sv) 1563api_is_ready (pTHX_ SV *coro_sv)
1225{ 1564{
1226 dTHX;
1227 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1565 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1228} 1566}
1229 1567
1230static void 1568INLINE void
1231prepare_schedule (pTHX_ struct transfer_args *ta) 1569prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1232{ 1570{
1233 SV *prev_sv, *next_sv; 1571 SV *prev_sv, *next_sv;
1234 1572
1235 for (;;) 1573 for (;;)
1236 { 1574 {
1237 LOCK;
1238 next_sv = coro_deq (aTHX_ PRIO_MIN); 1575 next_sv = coro_deq (aTHX);
1239 1576
1240 /* nothing to schedule: call the idle handler */ 1577 /* nothing to schedule: call the idle handler */
1241 if (!next_sv) 1578 if (expect_false (!next_sv))
1242 { 1579 {
1243 dSP; 1580 dSP;
1244 UNLOCK;
1245 1581
1246 ENTER; 1582 ENTER;
1247 SAVETMPS; 1583 SAVETMPS;
1248 1584
1249 PUSHMARK (SP); 1585 PUSHMARK (SP);
1250 PUTBACK; 1586 PUTBACK;
1251 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1252 1588
1253 FREETMPS; 1589 FREETMPS;
1254 LEAVE; 1590 LEAVE;
1255 continue; 1591 continue;
1256 } 1592 }
1257 1593
1258 ta->next = SvSTATE (next_sv); 1594 ta->next = SvSTATE_hv (next_sv);
1259 1595
1260 /* cannot transfer to destroyed coros, skip and look for next */ 1596 /* cannot transfer to destroyed coros, skip and look for next */
1261 if (ta->next->flags & CF_DESTROYED) 1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1262 { 1598 {
1263 UNLOCK;
1264 SvREFCNT_dec (next_sv); 1599 SvREFCNT_dec (next_sv);
1265 /* coro_nready is already taken care of by destroy */ 1600 /* coro_nready has already been taken care of by destroy */
1266 continue; 1601 continue;
1267 } 1602 }
1268 1603
1269 --coro_nready; 1604 --coro_nready;
1270 UNLOCK;
1271 break; 1605 break;
1272 } 1606 }
1273 1607
1274 /* free this only after the transfer */ 1608 /* free this only after the transfer */
1275 prev_sv = SvRV (coro_current); 1609 prev_sv = SvRV (coro_current);
1276 ta->prev = SvSTATE (prev_sv); 1610 ta->prev = SvSTATE_hv (prev_sv);
1277 TRANSFER_CHECK (*ta); 1611 TRANSFER_CHECK (*ta);
1278 assert (ta->next->flags & CF_READY); 1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1279 ta->next->flags &= ~CF_READY; 1613 ta->next->flags &= ~CF_READY;
1280 SvRV_set (coro_current, next_sv); 1614 SvRV_set (coro_current, next_sv);
1281 1615
1282 LOCK;
1283 free_coro_mortal (aTHX); 1616 free_coro_mortal (aTHX);
1284 coro_mortal = prev_sv; 1617 coro_mortal = prev_sv;
1285 UNLOCK;
1286} 1618}
1287 1619
1288static void 1620INLINE void
1289prepare_cede (pTHX_ struct transfer_args *ta) 1621prepare_cede (pTHX_ struct coro_transfer_args *ta)
1290{ 1622{
1291 api_ready (coro_current); 1623 api_ready (aTHX_ coro_current);
1292 prepare_schedule (aTHX_ ta); 1624 prepare_schedule (aTHX_ ta);
1293} 1625}
1294 1626
1627INLINE void
1628prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1629{
1630 SV *prev = SvRV (coro_current);
1631
1632 if (coro_nready)
1633 {
1634 prepare_schedule (aTHX_ ta);
1635 api_ready (aTHX_ prev);
1636 }
1637 else
1638 prepare_nop (aTHX_ ta);
1639}
1640
1641static void
1642api_schedule (pTHX)
1643{
1644 struct coro_transfer_args ta;
1645
1646 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1);
1648}
1649
1295static int 1650static int
1296prepare_cede_notself (pTHX_ struct transfer_args *ta) 1651api_cede (pTHX)
1297{ 1652{
1298 if (coro_nready) 1653 struct coro_transfer_args ta;
1299 { 1654
1300 SV *prev = SvRV (coro_current);
1301 prepare_schedule (aTHX_ ta); 1655 prepare_cede (aTHX_ &ta);
1302 api_ready (prev); 1656
1657 if (expect_true (ta.prev != ta.next))
1658 {
1659 TRANSFER (ta, 1);
1303 return 1; 1660 return 1;
1304 } 1661 }
1305 else 1662 else
1306 return 0; 1663 return 0;
1307} 1664}
1308 1665
1309static void
1310api_schedule (void)
1311{
1312 dTHX;
1313 struct transfer_args ta;
1314
1315 prepare_schedule (aTHX_ &ta);
1316 TRANSFER (ta);
1317}
1318
1319static int 1666static int
1320api_cede (void) 1667api_cede_notself (pTHX)
1321{ 1668{
1322 dTHX; 1669 if (coro_nready)
1670 {
1323 struct transfer_args ta; 1671 struct coro_transfer_args ta;
1324 1672
1325 prepare_cede (aTHX_ &ta); 1673 prepare_cede_notself (aTHX_ &ta);
1326
1327 if (ta.prev != ta.next)
1328 {
1329 TRANSFER (ta); 1674 TRANSFER (ta, 1);
1330 return 1; 1675 return 1;
1331 } 1676 }
1332 else 1677 else
1333 return 0; 1678 return 0;
1334} 1679}
1335 1680
1336static int 1681static void
1337api_cede_notself (void)
1338{
1339 dTHX;
1340 struct transfer_args ta;
1341
1342 if (prepare_cede_notself (aTHX_ &ta))
1343 {
1344 TRANSFER (ta);
1345 return 1;
1346 }
1347 else
1348 return 0;
1349}
1350
1351static void
1352api_trace (SV *coro_sv, int flags) 1682api_trace (pTHX_ SV *coro_sv, int flags)
1353{ 1683{
1354 dTHX;
1355 struct coro *coro = SvSTATE (coro_sv); 1684 struct coro *coro = SvSTATE (coro_sv);
1356 1685
1357 if (flags & CC_TRACE) 1686 if (flags & CC_TRACE)
1358 { 1687 {
1359 if (!coro->cctx) 1688 if (!coro->cctx)
1360 coro->cctx = cctx_new (); 1689 coro->cctx = cctx_new_run ();
1361 else if (!(coro->cctx->flags & CC_TRACE)) 1690 else if (!(coro->cctx->flags & CC_TRACE))
1362 croak ("cannot enable tracing on coroutine with custom stack"); 1691 croak ("cannot enable tracing on coroutine with custom stack,");
1363 1692
1364 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1365 } 1694 }
1366 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1367 { 1696 {
1368 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1697 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1369 1698
1370 if (coro->flags & CF_RUNNING) 1699 if (coro->flags & CF_RUNNING)
1371 PL_runops = RUNOPS_DEFAULT; 1700 PL_runops = RUNOPS_DEFAULT;
1372 else 1701 else
1373 coro->runops = RUNOPS_DEFAULT; 1702 coro->slot->runops = RUNOPS_DEFAULT;
1703 }
1704}
1705
1706/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */
1708
1709static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1710static const CV *slf_cv;
1711static SV **slf_argv;
1712static int slf_argc, slf_arga; /* count, allocated */
1713static I32 slf_ax; /* top of stack, for restore */
1714
1715/* this restores the stack in the case we patched the entersub, to */
1716/* recreate the stack frame as perl will on following calls */
1717/* since entersub cleared the stack */
1718static OP *
1719pp_restore (pTHX)
1720{
1721 int i;
1722 SV **SP = PL_stack_base + slf_ax;
1723
1724 PUSHMARK (SP);
1725
1726 EXTEND (SP, slf_argc + 1);
1727
1728 for (i = 0; i < slf_argc; ++i)
1729 PUSHs (sv_2mortal (slf_argv [i]));
1730
1731 PUSHs ((SV *)CvGV (slf_cv));
1732
1733 RETURNOP (slf_restore.op_first);
1734}
1735
1736static void
1737slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1738{
1739 SV **arg = (SV **)slf_frame.data;
1740
1741 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1742}
1743
1744static void
1745slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1746{
1747 if (items != 2)
1748 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1749
1750 frame->prepare = slf_prepare_transfer;
1751 frame->check = slf_check_nop;
1752 frame->data = (void *)arg; /* let's hope it will stay valid */
1753}
1754
1755static void
1756slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757{
1758 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop;
1760}
1761
1762static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{
1765 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop;
1767}
1768
1769static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{
1772 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop;
1774}
1775
1776/*
1777 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same
1779 * stack offset
1780 * SLF stands for "schedule-like-function".
1781 */
1782static OP *
1783pp_slf (pTHX)
1784{
1785 I32 checkmark; /* mark SP to see how many elements check has pushed */
1786
1787 /* set up the slf frame, unless it has already been set-up */
1788 /* the latter happens when a new coro has been started */
1789 /* or when a new cctx was attached to an existing coroutine */
1790 if (expect_true (!slf_frame.prepare))
1374 } 1791 {
1792 /* first iteration */
1793 dSP;
1794 SV **arg = PL_stack_base + TOPMARK + 1;
1795 int items = SP - arg; /* args without function object */
1796 SV *gv = *sp;
1797
1798 /* do a quick consistency check on the "function" object, and if it isn't */
1799 /* for us, divert to the real entersub */
1800 if (SvTYPE (gv) != SVt_PVGV
1801 || !GvCV (gv)
1802 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1803 return PL_ppaddr[OP_ENTERSUB](aTHX);
1804
1805 if (!(PL_op->op_flags & OPf_STACKED))
1806 {
1807 /* ampersand-form of call, use @_ instead of stack */
1808 AV *av = GvAV (PL_defgv);
1809 arg = AvARRAY (av);
1810 items = AvFILLp (av) + 1;
1811 }
1812
1813 /* now call the init function, which needs to set up slf_frame */
1814 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1815 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1816
1817 /* pop args */
1818 SP = PL_stack_base + POPMARK;
1819
1820 PUTBACK;
1821 }
1822
1823 /* now that we have a slf_frame, interpret it! */
1824 /* we use a callback system not to make the code needlessly */
1825 /* complicated, but so we can run multiple perl coros from one cctx */
1826
1827 do
1828 {
1829 struct coro_transfer_args ta;
1830
1831 slf_frame.prepare (aTHX_ &ta);
1832 TRANSFER (ta, 0);
1833
1834 checkmark = PL_stack_sp - PL_stack_base;
1835 }
1836 while (slf_frame.check (aTHX_ &slf_frame));
1837
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839
1840 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR)
1843 {
1844 dSP;
1845 SV **bot = PL_stack_base + checkmark;
1846
1847 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */
1850 bot [1] = *sp;
1851
1852 SP = bot + 1;
1853
1854 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 }
1866
1867 return NORMAL;
1375} 1868}
1869
1870static void
1871api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1872{
1873 int i;
1874 SV **arg = PL_stack_base + ax;
1875 int items = PL_stack_sp - arg + 1;
1876
1877 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1878
1879 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1880 && PL_op->op_ppaddr != pp_slf)
1881 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1882
1883 CvFLAGS (cv) |= CVf_SLF;
1884 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1885 slf_cv = cv;
1886
1887 /* we patch the op, and then re-run the whole call */
1888 /* we have to put the same argument on the stack for this to work */
1889 /* and this will be done by pp_restore */
1890 slf_restore.op_next = (OP *)&slf_restore;
1891 slf_restore.op_type = OP_CUSTOM;
1892 slf_restore.op_ppaddr = pp_restore;
1893 slf_restore.op_first = PL_op;
1894
1895 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1896
1897 if (PL_op->op_flags & OPf_STACKED)
1898 {
1899 if (items > slf_arga)
1900 {
1901 slf_arga = items;
1902 free (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *));
1904 }
1905
1906 slf_argc = items;
1907
1908 for (i = 0; i < items; ++i)
1909 slf_argv [i] = SvREFCNT_inc (arg [i]);
1910 }
1911 else
1912 slf_argc = 0;
1913
1914 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1916
1917 PL_op = (OP *)&slf_restore;
1918}
1919
1920/*****************************************************************************/
1921/* PerlIO::cede */
1922
1923typedef struct
1924{
1925 PerlIOBuf base;
1926 NV next, every;
1927} PerlIOCede;
1928
1929static IV
1930PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1931{
1932 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1933
1934 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1935 self->next = nvtime () + self->every;
1936
1937 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1938}
1939
1940static SV *
1941PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1942{
1943 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1944
1945 return newSVnv (self->every);
1946}
1947
1948static IV
1949PerlIOCede_flush (pTHX_ PerlIO *f)
1950{
1951 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1952 double now = nvtime ();
1953
1954 if (now >= self->next)
1955 {
1956 api_cede (aTHX);
1957 self->next = now + self->every;
1958 }
1959
1960 return PerlIOBuf_flush (aTHX_ f);
1961}
1962
1963static PerlIO_funcs PerlIO_cede =
1964{
1965 sizeof(PerlIO_funcs),
1966 "cede",
1967 sizeof(PerlIOCede),
1968 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1969 PerlIOCede_pushed,
1970 PerlIOBuf_popped,
1971 PerlIOBuf_open,
1972 PerlIOBase_binmode,
1973 PerlIOCede_getarg,
1974 PerlIOBase_fileno,
1975 PerlIOBuf_dup,
1976 PerlIOBuf_read,
1977 PerlIOBuf_unread,
1978 PerlIOBuf_write,
1979 PerlIOBuf_seek,
1980 PerlIOBuf_tell,
1981 PerlIOBuf_close,
1982 PerlIOCede_flush,
1983 PerlIOBuf_fill,
1984 PerlIOBase_eof,
1985 PerlIOBase_error,
1986 PerlIOBase_clearerr,
1987 PerlIOBase_setlinebuf,
1988 PerlIOBuf_get_base,
1989 PerlIOBuf_bufsiz,
1990 PerlIOBuf_get_ptr,
1991 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt,
1993};
1994
1995/*****************************************************************************/
1996/* Coro::Semaphore */
1997
1998static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{
2001 SV *count_sv = AvARRAY (av)[0];
2002 IV count = SvIVX (count_sv);
2003
2004 count += adjust;
2005 SvIVX (count_sv) = count;
2006
2007 /* now wake up as many waiters as are expected to lock */
2008 while (count > 0 && AvFILLp (av) > 0)
2009 {
2010 SV *cb;
2011
2012 /* swap first two elements so we can shift a waiter */
2013 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av);
2016
2017 if (SvOBJECT (cb))
2018 api_ready (aTHX_ cb);
2019 else
2020 croak ("callbacks not yet supported");
2021
2022 SvREFCNT_dec (cb);
2023
2024 --count;
2025 }
2026}
2027
2028static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2030{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033}
2034
2035static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2037{
2038 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0];
2040
2041 if (SvIVX (count_sv) > 0)
2042 {
2043 SvSTATE_current->on_destroy = 0;
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2045 return 0;
2046 }
2047 else
2048 {
2049 int i;
2050 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */
2053
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current))
2056 return 1;
2057
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2059 return 1;
2060 }
2061}
2062
2063static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{
2066 AV *av = (AV *)SvRV (arg [0]);
2067
2068 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 {
2070 frame->data = (void *)av;
2071 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 }
2074 else
2075 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2085 }
2086
2087 frame->check = slf_check_semaphore_down;
2088
2089}
2090
2091/*****************************************************************************/
2092/* gensub: simple closure generation utility */
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{
2102 CV *cv = (CV *)newSV (0);
2103
2104 sv_upgrade ((SV *)cv, SVt_PVCV);
2105
2106 CvANON_on (cv);
2107 CvISXSUB_on (cv);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110
2111 return newRV_noinc ((SV *)cv);
2112}
2113
2114/*****************************************************************************/
2115/* Coro::AIO */
2116
2117#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2118
2119/* helper storage struct */
2120struct io_state
2121{
2122 int errorno;
2123 I32 laststype; /* U16 in 5.10.0 */
2124 int laststatval;
2125 Stat_t statcache;
2126};
2127
2128static void
2129coro_aio_callback (pTHX_ CV *cv)
2130{
2131 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG;
2133 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state));
2135
2136 av_extend (state, items);
2137
2138 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv);
2141
2142 {
2143 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2144
2145 data->errorno = errno;
2146 data->laststype = PL_laststype;
2147 data->laststatval = PL_laststatval;
2148 data->statcache = PL_statcache;
2149 }
2150
2151 /* now build the result vector out of all the parameters and the data_sv */
2152 {
2153 int i;
2154
2155 for (i = 0; i < items; ++i)
2156 av_push (state, SvREFCNT_inc_NN (ST (i)));
2157 }
2158
2159 av_push (state, data_sv);
2160
2161 api_ready (aTHX_ coro);
2162 SvREFCNT_dec (coro);
2163 SvREFCNT_dec ((AV *)state);
2164}
2165
2166static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{
2169 AV *state = (AV *)frame->data;
2170
2171 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1;
2174
2175 /* restore status */
2176 {
2177 SV *data_sv = av_pop (state);
2178 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2179
2180 errno = data->errorno;
2181 PL_laststype = data->laststype;
2182 PL_laststatval = data->laststatval;
2183 PL_statcache = data->statcache;
2184
2185 SvREFCNT_dec (data_sv);
2186 }
2187
2188 /* push result values */
2189 {
2190 dSP;
2191 int i;
2192
2193 EXTEND (SP, AvFILLp (state) + 1);
2194 for (i = 0; i <= AvFILLp (state); ++i)
2195 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2196
2197 PUTBACK;
2198 }
2199
2200 return 0;
2201}
2202
2203static void
2204slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2205{
2206 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2207 SV *coro_hv = SvRV (coro_current);
2208 struct coro *coro = SvSTATE_hv (coro_hv);
2209
2210 /* put our coroutine id on the state arg */
2211 av_push (state, SvREFCNT_inc_NN (coro_hv));
2212
2213 /* first see whether we have a non-zero priority and set it as AIO prio */
2214 if (coro->prio)
2215 {
2216 dSP;
2217
2218 static SV *prio_cv;
2219 static SV *prio_sv;
2220
2221 if (expect_false (!prio_cv))
2222 {
2223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2224 prio_sv = newSViv (0);
2225 }
2226
2227 PUSHMARK (SP);
2228 sv_setiv (prio_sv, coro->prio);
2229 XPUSHs (prio_sv);
2230
2231 PUTBACK;
2232 call_sv (prio_cv, G_VOID | G_DISCARD);
2233 }
2234
2235 /* now call the original request */
2236 {
2237 dSP;
2238 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2239 int i;
2240
2241 PUSHMARK (SP);
2242
2243 /* first push all args to the stack */
2244 EXTEND (SP, items + 1);
2245
2246 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]);
2248
2249 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251
2252 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 }
2256
2257 /* now that the requets is going, we loop toll we have a result */
2258 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req;
2261}
2262
2263static void
2264coro_aio_req_xs (pTHX_ CV *cv)
2265{
2266 dXSARGS;
2267
2268 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2269
2270 XSRETURN_EMPTY;
2271}
2272
2273/*****************************************************************************/
1376 2274
1377MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1378 2276
1379PROTOTYPES: DISABLE 2277PROTOTYPES: DISABLE
1380 2278
1381BOOT: 2279BOOT:
1382{ 2280{
1383#ifdef USE_ITHREADS 2281#ifdef USE_ITHREADS
1384 MUTEX_INIT (&coro_mutex); 2282# if CORO_PTHREAD
2283 coro_thx = PERL_GET_CONTEXT;
2284# endif
1385#endif 2285#endif
1386 BOOT_PAGESIZE; 2286 BOOT_PAGESIZE;
1387 2287
1388 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1389 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2293 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2294
2295 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2296 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2297 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1390 2298
1391 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2299 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1392 2300
1393 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2301 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1394 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2302 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1399 main_top_env = PL_top_env; 2307 main_top_env = PL_top_env;
1400 2308
1401 while (main_top_env->je_prev) 2309 while (main_top_env->je_prev)
1402 main_top_env = main_top_env->je_prev; 2310 main_top_env = main_top_env->je_prev;
1403 2311
2312 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf,
2317 newSVpv ("coro_slf", 0), 0);
2318
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf,
2321 newSVpv ("coro schedule like function", 0), 0);
2322 }
2323
1404 coroapi.ver = CORO_API_VERSION; 2324 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION;
2326
1405 coroapi.transfer = api_transfer; 2327 coroapi.transfer = api_transfer;
2328
2329 coroapi.sv_state = SvSTATE_;
2330 coroapi.execute_slf = api_execute_slf;
2331 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself;
2335
2336 {
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
1406 2344
1407 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1408} 2346}
1409 2347
1410SV * 2348SV *
1411new (char *klass, ...) 2349new (char *klass, ...)
1412 CODE: 2350 CODE:
1413{ 2351{
1414 struct coro *coro; 2352 struct coro *coro;
2353 MAGIC *mg;
1415 HV *hv; 2354 HV *hv;
1416 int i; 2355 int i;
1417 2356
1418 Newz (0, coro, 1, struct coro); 2357 Newz (0, coro, 1, struct coro);
1419 coro->args = newAV (); 2358 coro->args = newAV ();
… …
1422 if (coro_first) coro_first->prev = coro; 2361 if (coro_first) coro_first->prev = coro;
1423 coro->next = coro_first; 2362 coro->next = coro_first;
1424 coro_first = coro; 2363 coro_first = coro;
1425 2364
1426 coro->hv = hv = newHV (); 2365 coro->hv = hv = newHV ();
1427 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
1428 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1429 2369
2370 av_extend (coro->args, items - 1);
1430 for (i = 1; i < items; i++) 2371 for (i = 1; i < items; i++)
1431 av_push (coro->args, newSVsv (ST (i))); 2372 av_push (coro->args, newSVsv (ST (i)));
1432} 2373}
1433 OUTPUT: 2374 OUTPUT:
1434 RETVAL 2375 RETVAL
1435 2376
1436# these not obviously related functions are all rolled into the same xs
1437# function to increase chances that they all will call transfer with the same
1438# stack offset
1439void 2377void
1440_set_stacklevel (...) 2378transfer (...)
1441 ALIAS: 2379 PROTOTYPE: $$
1442 Coro::State::transfer = 1 2380 CODE:
1443 Coro::schedule = 2 2381 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1444 Coro::cede = 3
1445 Coro::cede_notself = 4
1446 CODE:
1447{
1448 struct transfer_args ta;
1449
1450 switch (ix)
1451 {
1452 case 0:
1453 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1454 ta.next = 0;
1455 break;
1456
1457 case 1:
1458 if (items != 2)
1459 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1460
1461 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1462 break;
1463
1464 case 2:
1465 prepare_schedule (aTHX_ &ta);
1466 break;
1467
1468 case 3:
1469 prepare_cede (aTHX_ &ta);
1470 break;
1471
1472 case 4:
1473 if (!prepare_cede_notself (aTHX_ &ta))
1474 XSRETURN_EMPTY;
1475
1476 break;
1477 }
1478
1479 BARRIER;
1480 TRANSFER (ta);
1481
1482 if (GIMME_V != G_VOID && ta.next != ta.prev)
1483 XSRETURN_YES;
1484}
1485 2382
1486bool 2383bool
1487_destroy (SV *coro_sv) 2384_destroy (SV *coro_sv)
1488 CODE: 2385 CODE:
1489 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1490 OUTPUT: 2387 OUTPUT:
1491 RETVAL 2388 RETVAL
1492 2389
1493void 2390void
1494_exit (code) 2391_exit (int code)
1495 int code
1496 PROTOTYPE: $ 2392 PROTOTYPE: $
1497 CODE: 2393 CODE:
1498 _exit (code); 2394 _exit (code);
1499 2395
1500int 2396int
1501cctx_stacksize (int new_stacksize = 0) 2397cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$
1502 CODE: 2399 CODE:
1503 RETVAL = coro_stacksize; 2400 RETVAL = cctx_stacksize;
1504 if (new_stacksize) 2401 if (new_stacksize)
2402 {
1505 coro_stacksize = new_stacksize; 2403 cctx_stacksize = new_stacksize;
2404 ++cctx_gen;
2405 }
1506 OUTPUT: 2406 OUTPUT:
1507 RETVAL 2407 RETVAL
1508 2408
1509int 2409int
2410cctx_max_idle (int max_idle = 0)
2411 PROTOTYPE: ;$
2412 CODE:
2413 RETVAL = cctx_max_idle;
2414 if (max_idle > 1)
2415 cctx_max_idle = max_idle;
2416 OUTPUT:
2417 RETVAL
2418
2419int
1510cctx_count () 2420cctx_count ()
2421 PROTOTYPE:
1511 CODE: 2422 CODE:
1512 RETVAL = cctx_count; 2423 RETVAL = cctx_count;
1513 OUTPUT: 2424 OUTPUT:
1514 RETVAL 2425 RETVAL
1515 2426
1516int 2427int
1517cctx_idle () 2428cctx_idle ()
2429 PROTOTYPE:
1518 CODE: 2430 CODE:
1519 RETVAL = cctx_idle; 2431 RETVAL = cctx_idle;
1520 OUTPUT: 2432 OUTPUT:
1521 RETVAL 2433 RETVAL
1522 2434
1523void 2435void
1524list () 2436list ()
2437 PROTOTYPE:
1525 PPCODE: 2438 PPCODE:
1526{ 2439{
1527 struct coro *coro; 2440 struct coro *coro;
1528 for (coro = coro_first; coro; coro = coro->next) 2441 for (coro = coro_first; coro; coro = coro->next)
1529 if (coro->hv) 2442 if (coro->hv)
… …
1534call (Coro::State coro, SV *coderef) 2447call (Coro::State coro, SV *coderef)
1535 ALIAS: 2448 ALIAS:
1536 eval = 1 2449 eval = 1
1537 CODE: 2450 CODE:
1538{ 2451{
1539 if (coro->mainstack) 2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1540 { 2453 {
1541 struct coro temp; 2454 struct coro temp;
1542 Zero (&temp, 1, struct coro);
1543 2455
1544 if (!(coro->flags & CF_RUNNING)) 2456 if (!(coro->flags & CF_RUNNING))
1545 { 2457 {
2458 PUTBACK;
1546 save_perl (aTHX_ &temp); 2459 save_perl (aTHX_ &temp);
1547 load_perl (aTHX_ coro); 2460 load_perl (aTHX_ coro);
1548 } 2461 }
1549 2462
1550 { 2463 {
1551 dSP; 2464 dSP;
1552 ENTER; 2465 ENTER;
1553 SAVETMPS; 2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK;
1554 PUSHMARK (SP); 2469 PUSHMARK (SP);
1555 PUTBACK; 2470
1556 if (ix) 2471 if (ix)
1557 eval_sv (coderef, 0); 2472 eval_sv (coderef, 0);
1558 else 2473 else
1559 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475
2476 POPSTACK;
1560 SPAGAIN; 2477 SPAGAIN;
1561 FREETMPS; 2478 FREETMPS;
1562 LEAVE; 2479 LEAVE;
1563 PUTBACK; 2480 PUTBACK;
1564 } 2481 }
1565 2482
1566 if (!(coro->flags & CF_RUNNING)) 2483 if (!(coro->flags & CF_RUNNING))
1567 { 2484 {
1568 save_perl (aTHX_ coro); 2485 save_perl (aTHX_ coro);
1569 load_perl (aTHX_ &temp); 2486 load_perl (aTHX_ &temp);
2487 SPAGAIN;
1570 } 2488 }
1571 } 2489 }
1572} 2490}
1573 2491
1574SV * 2492SV *
… …
1583 RETVAL = boolSV (coro->flags & ix); 2501 RETVAL = boolSV (coro->flags & ix);
1584 OUTPUT: 2502 OUTPUT:
1585 RETVAL 2503 RETVAL
1586 2504
1587void 2505void
2506throw (Coro::State self, SV *throw = &PL_sv_undef)
2507 PROTOTYPE: $;$
2508 CODE:
2509{
2510 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw;
2512 SvREFCNT_dec (*throwp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2514}
2515
2516void
1588api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$
2519 C_ARGS: aTHX_ coro, flags
1589 2520
1590SV * 2521SV *
1591has_stack (Coro::State coro) 2522has_cctx (Coro::State coro)
1592 PROTOTYPE: $ 2523 PROTOTYPE: $
1593 CODE: 2524 CODE:
1594 RETVAL = boolSV (!!coro->cctx); 2525 RETVAL = boolSV (!!coro->cctx);
1595 OUTPUT: 2526 OUTPUT:
1596 RETVAL 2527 RETVAL
… …
1601 CODE: 2532 CODE:
1602 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2533 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1603 OUTPUT: 2534 OUTPUT:
1604 RETVAL 2535 RETVAL
1605 2536
1606IV 2537UV
1607rss (Coro::State coro) 2538rss (Coro::State coro)
1608 PROTOTYPE: $ 2539 PROTOTYPE: $
1609 ALIAS: 2540 ALIAS:
1610 usecount = 1 2541 usecount = 1
1611 CODE: 2542 CODE:
… …
1615 case 1: RETVAL = coro->usecount; break; 2546 case 1: RETVAL = coro->usecount; break;
1616 } 2547 }
1617 OUTPUT: 2548 OUTPUT:
1618 RETVAL 2549 RETVAL
1619 2550
2551void
2552force_cctx ()
2553 PROTOTYPE:
2554 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0;
2556
2557void
2558swap_defsv (Coro::State self)
2559 PROTOTYPE: $
2560 ALIAS:
2561 swap_defav = 1
2562 CODE:
2563 if (!self->slot)
2564 croak ("cannot swap state with coroutine that has no saved state,");
2565 else
2566 {
2567 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569
2570 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 }
2572
1620 2573
1621MODULE = Coro::State PACKAGE = Coro 2574MODULE = Coro::State PACKAGE = Coro
1622 2575
1623BOOT: 2576BOOT:
1624{ 2577{
1625 int i; 2578 int i;
1626 2579
1627 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1628 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1629 av_async_pool = get_av ("Coro::async_pool", TRUE); 2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1630 2583
1631 coro_current = get_sv ("Coro::current", FALSE); 2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1632 SvREADONLY_on (coro_current); 2585 SvREADONLY_on (coro_current);
1633 2586
1634 coro_stash = gv_stashpv ("Coro", TRUE); 2587 coro_stash = gv_stashpv ("Coro", TRUE);
1635 2588
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1642 2595
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV (); 2597 coro_ready[i] = newAV ();
1645 2598
1646 { 2599 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 2601
1649 coroapi.schedule = api_schedule; 2602 coroapi.schedule = api_schedule;
1650 coroapi.cede = api_cede; 2603 coroapi.cede = api_cede;
1651 coroapi.cede_notself = api_cede_notself; 2604 coroapi.cede_notself = api_cede_notself;
1652 coroapi.ready = api_ready; 2605 coroapi.ready = api_ready;
1653 coroapi.is_ready = api_is_ready; 2606 coroapi.is_ready = api_is_ready;
1654 coroapi.nready = &coro_nready; 2607 coroapi.nready = coro_nready;
1655 coroapi.current = coro_current; 2608 coroapi.current = coro_current;
1656 2609
1657 GCoroAPI = &coroapi; 2610 GCoroAPI = &coroapi;
1658 sv_setiv (sv, (IV)&coroapi); 2611 sv_setiv (sv, (IV)&coroapi);
1659 SvREADONLY_on (sv); 2612 SvREADONLY_on (sv);
1660 } 2613 }
1661} 2614}
2615
2616void
2617schedule (...)
2618 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2620
2621void
2622cede (...)
2623 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede);
2625
2626void
2627cede_notself (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1662 2630
1663void 2631void
1664_set_current (SV *current) 2632_set_current (SV *current)
1665 PROTOTYPE: $ 2633 PROTOTYPE: $
1666 CODE: 2634 CODE:
1667 SvREFCNT_dec (SvRV (coro_current)); 2635 SvREFCNT_dec (SvRV (coro_current));
1668 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2636 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2637
2638void
2639_set_readyhook (SV *hook)
2640 PROTOTYPE: $
2641 CODE:
2642 SvREFCNT_dec (coro_readyhook);
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1669 2644
1670int 2645int
1671prio (Coro::State coro, int newprio = 0) 2646prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$
1672 ALIAS: 2648 ALIAS:
1673 nice = 1 2649 nice = 1
1674 CODE: 2650 CODE:
1675{ 2651{
1676 RETVAL = coro->prio; 2652 RETVAL = coro->prio;
… …
1691 2667
1692SV * 2668SV *
1693ready (SV *self) 2669ready (SV *self)
1694 PROTOTYPE: $ 2670 PROTOTYPE: $
1695 CODE: 2671 CODE:
1696 RETVAL = boolSV (api_ready (self)); 2672 RETVAL = boolSV (api_ready (aTHX_ self));
1697 OUTPUT: 2673 OUTPUT:
1698 RETVAL 2674 RETVAL
1699 2675
1700int 2676int
1701nready (...) 2677nready (...)
… …
1708# for async_pool speedup 2684# for async_pool speedup
1709void 2685void
1710_pool_1 (SV *cb) 2686_pool_1 (SV *cb)
1711 CODE: 2687 CODE:
1712{ 2688{
1713 struct coro *coro = SvSTATE (coro_current);
1714 HV *hv = (HV *)SvRV (coro_current); 2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
1715 AV *defav = GvAV (PL_defgv); 2691 AV *defav = GvAV (PL_defgv);
1716 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1717 AV *invoke_av; 2693 AV *invoke_av;
1718 int i, len; 2694 int i, len;
1719 2695
1720 if (!invoke) 2696 if (!invoke)
2697 {
2698 SV *old = PL_diehook;
2699 PL_diehook = 0;
2700 SvREFCNT_dec (old);
1721 croak ("\3terminate\2\n"); 2701 croak ("\3async_pool terminate\2\n");
2702 }
1722 2703
1723 SvREFCNT_dec (coro->saved_deffh); 2704 SvREFCNT_dec (coro->saved_deffh);
1724 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1725 2706
1726 hv_store (hv, "desc", sizeof ("desc") - 1, 2707 hv_store (hv, "desc", sizeof ("desc") - 1,
1727 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1728 2709
1729 invoke_av = (AV *)SvRV (invoke); 2710 invoke_av = (AV *)SvRV (invoke);
… …
1733 2714
1734 if (len > 0) 2715 if (len > 0)
1735 { 2716 {
1736 av_fill (defav, len - 1); 2717 av_fill (defav, len - 1);
1737 for (i = 0; i < len; ++i) 2718 for (i = 0; i < len; ++i)
1738 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1739 } 2720 }
1740
1741 SvREFCNT_dec (invoke);
1742} 2721}
1743 2722
1744void 2723void
1745_pool_2 (SV *cb) 2724_pool_2 (SV *cb)
1746 CODE: 2725 CODE:
1747{ 2726{
1748 struct coro *coro = SvSTATE (coro_current); 2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv);
1749 2729
1750 sv_setsv (cb, &PL_sv_undef); 2730 sv_setsv (cb, &PL_sv_undef);
1751 2731
1752 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1753 coro->saved_deffh = 0; 2733 coro->saved_deffh = 0;
1754 2734
1755 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1756 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
1757 croak ("\3terminate\2\n"); 2741 croak ("\3async_pool terminate\2\n");
2742 }
1758 2743
1759 av_clear (GvAV (PL_defgv)); 2744 av_clear (GvAV (PL_defgv));
1760 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2745 hv_store (hv, "desc", sizeof ("desc") - 1,
1761 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1762 2747
1763 coro->prio = 0; 2748 coro->prio = 0;
1764 2749
1765 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1766 api_trace (coro_current, 0); 2751 api_trace (aTHX_ coro_current, 0);
1767 2752
1768 av_push (av_async_pool, newSVsv (coro_current)); 2753 av_push (av_async_pool, newSVsv (coro_current));
1769} 2754}
1770 2755
1771 2756
2757MODULE = Coro::State PACKAGE = PerlIO::cede
2758
2759BOOT:
2760 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2761
2762
1772MODULE = Coro::State PACKAGE = Coro::AIO 2763MODULE = Coro::State PACKAGE = Coro::Semaphore
1773 2764
1774SV * 2765SV *
1775_get_state () 2766new (SV *klass, SV *count_ = 0)
1776 CODE: 2767 CODE:
1777{ 2768{
1778 struct io_state *data; 2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2770 AV *av = newAV ();
2771 SV **ary;
1779 2772
1780 RETVAL = newSV (sizeof (struct io_state)); 2773 /* unfortunately, building manually saves memory */
1781 data = (struct io_state *)SvPVX (RETVAL); 2774 Newx (ary, 2, SV *);
1782 SvCUR_set (RETVAL, sizeof (struct io_state)); 2775 AvALLOC (av) = ary;
1783 SvPOK_only (RETVAL); 2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
1784 2780
1785 data->errorno = errno; 2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
1786 data->laststype = PL_laststype;
1787 data->laststatval = PL_laststatval;
1788 data->statcache = PL_statcache;
1789} 2782}
1790 OUTPUT: 2783 OUTPUT:
1791 RETVAL 2784 RETVAL
1792 2785
2786SV *
2787count (SV *self)
2788 CODE:
2789 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2790 OUTPUT:
2791 RETVAL
2792
1793void 2793void
1794_set_state (char *data_) 2794up (SV *self, int adjust = 1)
1795 PROTOTYPE: $ 2795 ALIAS:
2796 adjust = 1
2797 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799
2800void
2801down (SV *self)
2802 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2804
2805void
2806try (SV *self)
2807 PPCODE:
2808{
2809 AV *av = (AV *)SvRV (self);
2810 SV *count_sv = AvARRAY (av)[0];
2811 IV count = SvIVX (count_sv);
2812
2813 if (count > 0)
2814 {
2815 --count;
2816 SvIVX (count_sv) = count;
2817 XSRETURN_YES;
2818 }
2819 else
2820 XSRETURN_NO;
2821}
2822
2823void
2824waiters (SV *self)
2825 CODE:
2826{
2827 AV *av = (AV *)SvRV (self);
2828
2829 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2831 else
2832 {
2833 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1);
2835 for (i = 1; i <= AvFILLp (av); ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 }
2838}
2839
2840
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842
2843BOOT:
2844 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2845
2846void
2847_schedule (...)
1796 CODE: 2848 CODE:
1797{ 2849{
1798 struct io_state *data = (void *)data_; 2850 static int incede;
1799 2851
1800 errno = data->errorno; 2852 api_cede_notself (aTHX);
1801 PL_laststype = data->laststype;
1802 PL_laststatval = data->laststatval;
1803 PL_statcache = data->statcache;
1804}
1805 2853
2854 ++incede;
2855 while (coro_nready >= incede && api_cede (aTHX))
2856 ;
2857
2858 sv_setsv (sv_activity, &PL_sv_undef);
2859 if (coro_nready >= incede)
2860 {
2861 PUSHMARK (SP);
2862 PUTBACK;
2863 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2864 }
2865
2866 --incede;
2867}
2868
2869
2870MODULE = Coro::State PACKAGE = Coro::AIO
2871
2872void
2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883}
2884

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