ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC vs.
Revision 1.295 by root, Tue Nov 18 10:35:01 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. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
100#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
101#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
102 131
103#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
104 133
105#if __GNUC__ >= 3 134#if __GNUC__ >= 3
106# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
107# define BARRIER __asm__ __volatile__ ("" : : : "memory") 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
108#else 138#else
109# define attribute(x) 139# define attribute(x)
110# define BARRIER 140# define expect(expr,value) (expr)
141# define INLINE static
111#endif 142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
112 146
113#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
114 148
115#include "CoroAPI.h" 149#include "CoroAPI.h"
116 150
117#ifdef USE_ITHREADS 151#ifdef USE_ITHREADS
118static perl_mutex coro_mutex; 152# if CORO_PTHREAD
119# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 153static 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 154# endif
155#endif
125 156
126/* helper storage struct for Coro::AIO */ 157static 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};
134 158
159/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX);
162
163static U32 cctx_gen;
135static size_t coro_stacksize = CORO_STACKSIZE; 164static size_t cctx_stacksize = CORO_STACKSIZE;
136static struct CoroAPI coroapi; 165static struct CoroAPI coroapi;
137static AV *main_mainstack; /* used to differentiate between $main and others */ 166static AV *main_mainstack; /* used to differentiate between $main and others */
138static JMPENV *main_top_env; 167static JMPENV *main_top_env;
139static HV *coro_state_stash, *coro_stash; 168static HV *coro_state_stash, *coro_stash;
140static SV *coro_mortal; /* will be freed after next transfer */ 169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
141 170
142static GV *irsgv; /* $/ */ 171static GV *irsgv; /* $/ */
143static GV *stdoutgv; /* *STDOUT */ 172static GV *stdoutgv; /* *STDOUT */
173static SV *rv_diehook;
174static SV *rv_warnhook;
175static HV *hv_sig; /* %SIG */
144 176
145/* async_pool helper stuff */ 177/* async_pool helper stuff */
146static SV *sv_pool_rss; 178static SV *sv_pool_rss;
147static SV *sv_pool_size; 179static SV *sv_pool_size;
148static AV *av_async_pool; 180static AV *av_async_pool;
181
182/* Coro::AnyEvent */
183static SV *sv_activity;
149 184
150static struct coro_cctx *cctx_first; 185static struct coro_cctx *cctx_first;
151static int cctx_count, cctx_idle; 186static int cctx_count, cctx_idle;
152 187
153enum { 188enum {
… …
158 CC_TRACE_LINE = 0x10, /* trace each statement */ 193 CC_TRACE_LINE = 0x10, /* trace each statement */
159 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 194 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
160}; 195};
161 196
162/* this is a structure representing a c-level coroutine */ 197/* this is a structure representing a c-level coroutine */
163typedef struct coro_cctx { 198typedef struct coro_cctx
199{
164 struct coro_cctx *next; 200 struct coro_cctx *next;
165 201
166 /* the stack */ 202 /* the stack */
167 void *sptr; 203 void *sptr;
168 size_t ssize; 204 size_t ssize;
… …
171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 207 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 */ 208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
173 JMPENV *top_env; 209 JMPENV *top_env;
174 coro_context cctx; 210 coro_context cctx;
175 211
212 U32 gen;
176#if CORO_USE_VALGRIND 213#if CORO_USE_VALGRIND
177 int valgrind_id; 214 int valgrind_id;
178#endif 215#endif
179 unsigned char flags; 216 unsigned char flags;
180} coro_cctx; 217} coro_cctx;
… …
184 CF_READY = 0x0002, /* coroutine is ready */ 221 CF_READY = 0x0002, /* coroutine is ready */
185 CF_NEW = 0x0004, /* has never been switched to */ 222 CF_NEW = 0x0004, /* has never been switched to */
186 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
187}; 224};
188 225
189/* this is a structure representing a perl-level coroutine */ 226/* the structure where most of the perl state is stored, overlaid on the cxstack */
190struct coro { 227typedef struct
191 /* the c coroutine allocated to this perl coroutine, if any */ 228{
192 coro_cctx *cctx; 229 SV *defsv;
193 230 AV *defav;
194 /* data associated with this coroutine (initial args) */ 231 SV *errsv;
195 AV *args; 232 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; 233#define VAR(name,type) type name;
208# include "state.h" 234# include "state.h"
209#undef VAR 235#undef VAR
236} perl_slots;
237
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239
240/* this is a structure representing a perl-level coroutine */
241struct coro {
242 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx;
244
245 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */
247 AV *mainstack;
248 perl_slots *slot; /* basically the saved sp */
249
250 AV *args; /* data associated with this coroutine (initial args) */
251 int refcnt; /* coroutines are refcounted, yes */
252 int flags; /* CF_ flags */
253 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
210 255
211 /* statistics */ 256 /* statistics */
212 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
213 258
214 /* coro process data */ 259 /* coro process data */
215 int prio; 260 int prio;
216 //SV *throw; 261 SV *throw; /* exception to be thrown */
217 262
218 /* async_pool */ 263 /* async_pool */
219 SV *saved_deffh; 264 SV *saved_deffh;
220 265
221 /* linked list */ 266 /* linked list */
222 struct coro *next, *prev; 267 struct coro *next, *prev;
223 HV *hv; /* the perl hash associated with this coro, if any */
224}; 268};
225 269
226typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
227typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
228 278
229/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
230 280
231#define PRIO_MAX 3 281#define PRIO_MAX 3
232#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
235#define PRIO_IDLE -3 285#define PRIO_IDLE -3
236#define PRIO_MIN -4 286#define PRIO_MIN -4
237 287
238/* for Coro.pm */ 288/* for Coro.pm */
239static SV *coro_current; 289static SV *coro_current;
290static SV *coro_readyhook;
240static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
241static int coro_nready;
242static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
243 294
244/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
296
297static SV *
298coro_get_sv (pTHX_ const char *name, int create)
299{
300#if PERL_VERSION_ATLEAST (5,10,0)
301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
302 get_sv (name, create);
303#endif
304 return get_sv (name, create);
305}
306
307static AV *
308coro_get_av (pTHX_ const char *name, int create)
309{
310#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_av (name, create);
313#endif
314 return get_av (name, create);
315}
316
317static HV *
318coro_get_hv (pTHX_ const char *name, int create)
319{
320#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_hv (name, create);
323#endif
324 return get_hv (name, create);
325}
245 326
246static AV * 327static AV *
247coro_clone_padlist (pTHX_ CV *cv) 328coro_clone_padlist (pTHX_ CV *cv)
248{ 329{
249 AV *padlist = CvPADLIST (cv); 330 AV *padlist = CvPADLIST (cv);
250 AV *newpadlist, *newpad; 331 AV *newpadlist, *newpad;
251 332
252 newpadlist = newAV (); 333 newpadlist = newAV ();
253 AvREAL_off (newpadlist); 334 AvREAL_off (newpadlist);
254#if PERL_VERSION_ATLEAST (5,9,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
255 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
256#else 337#else
257 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
258#endif 339#endif
259 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
260 --AvFILLp (padlist); 341 --AvFILLp (padlist);
261 342
262 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
263 av_store (newpadlist, 1, (SV *)newpad); 344 av_store (newpadlist, 1, (SV *)newpad);
264 345
265 return newpadlist; 346 return newpadlist;
266} 347}
267 348
… …
297 378
298 /* casting is fun. */ 379 /* casting is fun. */
299 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
300 free_padlist (aTHX_ padlist); 381 free_padlist (aTHX_ padlist);
301 382
302 SvREFCNT_dec (av); 383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
303 384
304 return 0; 385 return 0;
305} 386}
306 387
388#define CORO_MAGIC_type_cv 26
307#define PERL_MAGIC_coro PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
308 390
309static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 391static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0,
393 coro_cv_free
394};
310 395
311#define CORO_MAGIC(cv) \ 396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
312 SvMAGIC (cv) \ 398 ? SvMAGIC (sv) \
313 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 399 : mg_find (sv, type))
314 ? SvMAGIC (cv) \ 400
315 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
316 : 0 404 : 0)
317 405
318static struct coro * 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
319SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
320{ 411{
321 HV *stash; 412 HV *stash;
322 MAGIC *mg; 413 MAGIC *mg;
323 414
324 if (SvROK (coro)) 415 if (SvROK (coro))
325 coro = SvRV (coro); 416 coro = SvRV (coro);
326 417
327 if (SvTYPE (coro) != SVt_PVHV) 418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
328 croak ("Coro::State object required"); 419 croak ("Coro::State object required");
329 420
330 stash = SvSTASH (coro); 421 stash = SvSTASH (coro);
331 if (stash != coro_stash && stash != coro_state_stash) 422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
332 { 423 {
333 /* very slow, but rare, check */ 424 /* very slow, but rare, check */
334 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
335 croak ("Coro::State object required"); 426 croak ("Coro::State object required");
336 } 427 }
337 428
338 mg = CORO_MAGIC (coro); 429 mg = CORO_MAGIC_state (coro);
339 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
340} 431}
341 432
342#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
343 434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
344/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
345static void 440static void
346get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
347{ 442{
348 MAGIC *mg = CORO_MAGIC (cv); 443 MAGIC *mg = CORO_MAGIC_cv (cv);
349 AV *av; 444 AV *av;
350 445
351 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
352 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
353 else 448 else
354 { 449 {
355#if CORO_PREFER_PERL_FUNCTIONS 450#if CORO_PREFER_PERL_FUNCTIONS
356 /* this is probably cleaner, but also slower? */ 451 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */
357 CV *cp = Perl_cv_clone (cv); 453 CV *cp = Perl_cv_clone (cv);
358 CvPADLIST (cv) = CvPADLIST (cp); 454 CvPADLIST (cv) = CvPADLIST (cp);
359 CvPADLIST (cp) = 0; 455 CvPADLIST (cp) = 0;
360 SvREFCNT_dec (cp); 456 SvREFCNT_dec (cp);
361#else 457#else
… …
365} 461}
366 462
367static void 463static void
368put_padlist (pTHX_ CV *cv) 464put_padlist (pTHX_ CV *cv)
369{ 465{
370 MAGIC *mg = CORO_MAGIC (cv); 466 MAGIC *mg = CORO_MAGIC_cv (cv);
371 AV *av; 467 AV *av;
372 468
373 if (!mg) 469 if (expect_false (!mg))
374 { 470 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 }
380 471
381 av = (AV *)mg->mg_obj; 472 av = (AV *)mg->mg_obj;
382 473
383 if (AvFILLp (av) >= AvMAX (av)) 474 if (expect_false (AvFILLp (av) >= AvMAX (av)))
384 av_extend (av, AvMAX (av) + 1); 475 av_extend (av, AvMAX (av) + 1);
385 476
386 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
387} 478}
388 479
389/** load & save, init *******************************************************/ 480/** load & save, init *******************************************************/
390 481
391static void 482static void
392load_perl (pTHX_ Coro__State c) 483load_perl (pTHX_ Coro__State c)
393{ 484{
485 perl_slots *slot = c->slot;
486 c->slot = 0;
487
488 PL_mainstack = c->mainstack;
489
490 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv;
494
394#define VAR(name,type) PL_ ## name = c->name; 495 #define VAR(name,type) PL_ ## name = slot->name;
395# include "state.h" 496 # include "state.h"
396#undef VAR 497 #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;
402 498
403 { 499 {
404 dSP; 500 dSP;
501
405 CV *cv; 502 CV *cv;
406 503
407 /* now do the ugly restore mess */ 504 /* now do the ugly restore mess */
408 while ((cv = (CV *)POPs)) 505 while (expect_true (cv = (CV *)POPs))
409 { 506 {
410 put_padlist (aTHX_ cv); /* mark this padlist as available */ 507 put_padlist (aTHX_ cv); /* mark this padlist as available */
411 CvDEPTH (cv) = PTR2IV (POPs); 508 CvDEPTH (cv) = PTR2IV (POPs);
412 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
413 } 510 }
414 511
415 PUTBACK; 512 PUTBACK;
416 } 513 }
514
515 slf_frame = c->slf_frame;
516 coro_throw = c->throw;
417} 517}
418 518
419static void 519static void
420save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
421{ 521{
522 c->throw = coro_throw;
523 c->slf_frame = slf_frame;
524
422 { 525 {
423 dSP; 526 dSP;
424 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
425 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
426 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
432 535
433 XPUSHs (Nullsv); 536 XPUSHs (Nullsv);
434 /* this loop was inspired by pp_caller */ 537 /* this loop was inspired by pp_caller */
435 for (;;) 538 for (;;)
436 { 539 {
437 while (cxix >= 0) 540 while (expect_true (cxix >= 0))
438 { 541 {
439 PERL_CONTEXT *cx = &ccstk[cxix--]; 542 PERL_CONTEXT *cx = &ccstk[cxix--];
440 543
441 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
442 { 545 {
443 CV *cv = cx->blk_sub.cv; 546 CV *cv = cx->blk_sub.cv;
444 547
445 if (CvDEPTH (cv)) 548 if (expect_true (CvDEPTH (cv)))
446 { 549 {
447 EXTEND (SP, 3); 550 EXTEND (SP, 3);
448 PUSHs ((SV *)CvPADLIST (cv)); 551 PUSHs ((SV *)CvPADLIST (cv));
449 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
450 PUSHs ((SV *)cv); 553 PUSHs ((SV *)cv);
451 554
452 CvDEPTH (cv) = 0; 555 CvDEPTH (cv) = 0;
453 get_padlist (aTHX_ cv); 556 get_padlist (aTHX_ cv);
454 } 557 }
455 } 558 }
456 } 559 }
457 560
458 if (top_si->si_type == PERLSI_MAIN) 561 if (expect_true (top_si->si_type == PERLSI_MAIN))
459 break; 562 break;
460 563
461 top_si = top_si->si_prev; 564 top_si = top_si->si_prev;
462 ccstk = top_si->si_cxstack; 565 ccstk = top_si->si_cxstack;
463 cxix = top_si->si_cxix; 566 cxix = top_si->si_cxix;
464 } 567 }
465 568
466 PUTBACK; 569 PUTBACK;
467 } 570 }
468 571
572 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 {
578 int i;
579 for (i = 3; i < SLOT_COUNT; ++i)
580 CXINC;
581 }
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */
583
584 c->mainstack = PL_mainstack;
585
586 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588
469 c->defav = GvAV (PL_defgv); 589 slot->defav = GvAV (PL_defgv);
470 c->defsv = DEFSV; 590 slot->defsv = DEFSV;
471 c->errsv = ERRSV; 591 slot->errsv = ERRSV;
472 c->irssv_sv = GvSV (irsgv); 592 slot->irsgv = GvSV (irsgv);
473 593
474#define VAR(name,type)c->name = PL_ ## name; 594 #define VAR(name,type) slot->name = PL_ ## name;
475# include "state.h" 595 # include "state.h"
476#undef VAR 596 #undef VAR
597 }
477} 598}
478 599
479/* 600/*
480 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
481 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
482 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
483 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
484 */ 605 */
485#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
486# define coro_init_stacks init_stacks 607# define coro_init_stacks init_stacks
487#else 608#else
488static void 609static void
489coro_init_stacks (pTHX) 610coro_init_stacks (pTHX)
490{ 611{
491 PL_curstackinfo = new_stackinfo(64, 6); 612 PL_curstackinfo = new_stackinfo(32, 8);
492 PL_curstackinfo->si_type = PERLSI_MAIN; 613 PL_curstackinfo->si_type = PERLSI_MAIN;
493 PL_curstack = PL_curstackinfo->si_stack; 614 PL_curstack = PL_curstackinfo->si_stack;
494 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
495 616
496 PL_stack_base = AvARRAY(PL_curstack); 617 PL_stack_base = AvARRAY(PL_curstack);
497 PL_stack_sp = PL_stack_base; 618 PL_stack_sp = PL_stack_base;
498 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 619 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
499 620
500 New(50,PL_tmps_stack,64,SV*); 621 New(50,PL_tmps_stack,32,SV*);
501 PL_tmps_floor = -1; 622 PL_tmps_floor = -1;
502 PL_tmps_ix = -1; 623 PL_tmps_ix = -1;
503 PL_tmps_max = 64; 624 PL_tmps_max = 32;
504 625
505 New(54,PL_markstack,16,I32); 626 New(54,PL_markstack,16,I32);
506 PL_markstack_ptr = PL_markstack; 627 PL_markstack_ptr = PL_markstack;
507 PL_markstack_max = PL_markstack + 16; 628 PL_markstack_max = PL_markstack + 16;
508 629
509#ifdef SET_MARK_OFFSET 630#ifdef SET_MARK_OFFSET
510 SET_MARK_OFFSET; 631 SET_MARK_OFFSET;
511#endif 632#endif
512 633
513 New(54,PL_scopestack,16,I32); 634 New(54,PL_scopestack,8,I32);
514 PL_scopestack_ix = 0; 635 PL_scopestack_ix = 0;
515 PL_scopestack_max = 16; 636 PL_scopestack_max = 8;
516 637
517 New(54,PL_savestack,64,ANY); 638 New(54,PL_savestack,24,ANY);
518 PL_savestack_ix = 0; 639 PL_savestack_ix = 0;
519 PL_savestack_max = 64; 640 PL_savestack_max = 24;
520 641
521#if !PERL_VERSION_ATLEAST (5,9,0) 642#if !PERL_VERSION_ATLEAST (5,10,0)
522 New(54,PL_retstack,4,OP*); 643 New(54,PL_retstack,4,OP*);
523 PL_retstack_ix = 0; 644 PL_retstack_ix = 0;
524 PL_retstack_max = 4; 645 PL_retstack_max = 4;
525#endif 646#endif
526} 647}
… …
528 649
529/* 650/*
530 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
531 */ 652 */
532static void 653static void
533coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
534{ 655{
535 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
536 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
537 658
538 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
549 670
550 Safefree (PL_tmps_stack); 671 Safefree (PL_tmps_stack);
551 Safefree (PL_markstack); 672 Safefree (PL_markstack);
552 Safefree (PL_scopestack); 673 Safefree (PL_scopestack);
553 Safefree (PL_savestack); 674 Safefree (PL_savestack);
554#if !PERL_VERSION_ATLEAST (5,9,0) 675#if !PERL_VERSION_ATLEAST (5,10,0)
555 Safefree (PL_retstack); 676 Safefree (PL_retstack);
556#endif 677#endif
557} 678}
558 679
559static size_t 680static size_t
… …
561{ 682{
562 size_t rss = sizeof (*coro); 683 size_t rss = sizeof (*coro);
563 684
564 if (coro->mainstack) 685 if (coro->mainstack)
565 { 686 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
566 if (coro->flags & CF_RUNNING) 690 if (coro->flags & CF_RUNNING)
567 { 691 {
692 slot = &tmp_slot;
693
568 #define VAR(name,type)coro->name = PL_ ## name; 694 #define VAR(name,type) slot->name = PL_ ## name;
569 # include "state.h" 695 # include "state.h"
570 #undef VAR 696 #undef VAR
571 } 697 }
698 else
699 slot = coro->slot;
572 700
701 if (slot)
702 {
573 rss += sizeof (coro->curstackinfo); 703 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); 704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
576 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
577 rss += coro->tmps_max * sizeof (SV *); 706 rss += slot->tmps_max * sizeof (SV *);
578 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
579 rss += coro->scopestack_max * sizeof (I32); 708 rss += slot->scopestack_max * sizeof (I32);
580 rss += coro->savestack_max * sizeof (ANY); 709 rss += slot->savestack_max * sizeof (ANY);
581 710
582#if !PERL_VERSION_ATLEAST (5,9,0) 711#if !PERL_VERSION_ATLEAST (5,10,0)
583 rss += coro->retstack_max * sizeof (OP *); 712 rss += slot->retstack_max * sizeof (OP *);
584#endif 713#endif
714 }
585 } 715 }
586 716
587 return rss; 717 return rss;
588} 718}
589 719
590/** coroutine stack handling ************************************************/ 720/** coroutine stack handling ************************************************/
591 721
722static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
723static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
725
726/* apparently < 5.8.8 */
727#ifndef MgPV_nolen_const
728#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
729 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
730 (const char*)(mg)->mg_ptr)
731#endif
732
733/*
734 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide
737 * readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */
592static void 742static int
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{
745 const char *s = MgPV_nolen_const (mg);
746
747 if (*s == '_')
748 {
749 SV **svp = 0;
750
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753
754 if (svp)
755 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
757 return 0;
758 }
759 }
760
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762}
763
764static int
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{
767 const char *s = MgPV_nolen_const (mg);
768
769 if (*s == '_')
770 {
771 SV **svp = 0;
772
773 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
774 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
775
776 if (svp)
777 {
778 SV *old = *svp;
779 *svp = 0;
780 SvREFCNT_dec (old);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = newSVsv (sv);
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
810}
811
812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
593coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
594{ 829{
595 /* 830 /*
596 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
597 */ 832 */
… …
600 PL_runops = RUNOPS_DEFAULT; 835 PL_runops = RUNOPS_DEFAULT;
601 PL_curcop = &PL_compiling; 836 PL_curcop = &PL_compiling;
602 PL_in_eval = EVAL_NULL; 837 PL_in_eval = EVAL_NULL;
603 PL_comppad = 0; 838 PL_comppad = 0;
604 PL_curpm = 0; 839 PL_curpm = 0;
840 PL_curpad = 0;
605 PL_localizing = 0; 841 PL_localizing = 0;
606 PL_dirty = 0; 842 PL_dirty = 0;
607 PL_restartop = 0; 843 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
608 851
609 GvSV (PL_defgv) = NEWSV (0, 0); 852 GvSV (PL_defgv) = newSV (0);
610 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
611 GvSV (PL_errgv) = NEWSV (0, 0); 854 GvSV (PL_errgv) = newSV (0);
612 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
613 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
614 PL_defoutgv = SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
615 858
616 { 859 {
617 dSP; 860 dSP;
618 LOGOP myop; 861 UNOP myop;
619 862
620 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
621 myop.op_next = Nullop; 864 myop.op_next = Nullop;
622 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
623 866
624 PUSHMARK (SP); 867 PUSHMARK (SP);
625 XPUSHs (av_shift (GvAV (PL_defgv))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
626 PUTBACK; 869 PUTBACK;
627 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
628 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
629 SPAGAIN; 872 SPAGAIN;
630 } 873 }
631 874
632 ENTER; /* necessary e.g. for dounwind */ 875 /* this newly created coroutine might be run on an existing cctx which most
633} 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
634 880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 coro_throw = coro->throw;
891}
892
635static void 893static void
636coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
637{ 895{
638 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
639 { 897 {
640 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
641 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
657 SvREFCNT_dec (GvSV (PL_errgv)); 915 SvREFCNT_dec (GvSV (PL_errgv));
658 SvREFCNT_dec (PL_defoutgv); 916 SvREFCNT_dec (PL_defoutgv);
659 SvREFCNT_dec (PL_rs); 917 SvREFCNT_dec (PL_rs);
660 SvREFCNT_dec (GvSV (irsgv)); 918 SvREFCNT_dec (GvSV (irsgv));
661 919
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922
662 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
663 //SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (coro_throw);
664 925
665 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
666} 927}
667 928
668static void 929INLINE void
669free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
670{ 931{
671 if (coro_mortal) 932 if (expect_true (coro_mortal))
672 { 933 {
673 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
674 coro_mortal = 0; 935 coro_mortal = 0;
675 } 936 }
676} 937}
… …
678static int 939static int
679runops_trace (pTHX) 940runops_trace (pTHX)
680{ 941{
681 COP *oldcop = 0; 942 COP *oldcop = 0;
682 int oldcxix = -2; 943 int oldcxix = -2;
683 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
684 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
685 946
686 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
687 { 948 {
688 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
705 bot = PL_stack_base + cx->blk_oldsp + 1; 966 bot = PL_stack_base + cx->blk_oldsp + 1;
706 top = cx->blk_gimme == G_ARRAY ? SP + 1 967 top = cx->blk_gimme == G_ARRAY ? SP + 1
707 : cx->blk_gimme == G_SCALAR ? bot + 1 968 : cx->blk_gimme == G_SCALAR ? bot + 1
708 : bot; 969 : bot;
709 970
971 av_extend (av, top - bot);
710 while (bot < top) 972 while (bot < top)
711 av_push (av, SvREFCNT_inc (*bot++)); 973 av_push (av, SvREFCNT_inc_NN (*bot++));
712 974
713 PL_runops = RUNOPS_DEFAULT; 975 PL_runops = RUNOPS_DEFAULT;
714 ENTER; 976 ENTER;
715 SAVETMPS; 977 SAVETMPS;
716 EXTEND (SP, 3); 978 EXTEND (SP, 3);
… …
754 SAVETMPS; 1016 SAVETMPS;
755 EXTEND (SP, 3); 1017 EXTEND (SP, 3);
756 PUSHMARK (SP); 1018 PUSHMARK (SP);
757 PUSHs (&PL_sv_yes); 1019 PUSHs (&PL_sv_yes);
758 PUSHs (fullname); 1020 PUSHs (fullname);
759 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
760 PUTBACK; 1022 PUTBACK;
761 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1023 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); 1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
763 SPAGAIN; 1025 SPAGAIN;
764 FREETMPS; 1026 FREETMPS;
… …
796 1058
797 TAINT_NOT; 1059 TAINT_NOT;
798 return 0; 1060 return 0;
799} 1061}
800 1062
801/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
802/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
803/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
804static void NOINLINE 1082static void NOINLINE
805prepare_cctx (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
806{ 1084{
807 dSP;
808 LOGOP myop;
809
810 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
811 1086
812 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
813 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
814 1089
815 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
816 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
817 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
818 1094
819 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
820 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
821 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
822 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
823 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
824 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
825 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
826 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
827} 1108}
828 1109
829/* 1110/*
830 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
831 */ 1112 */
832static void 1113static void
833coro_run (void *arg) 1114cctx_run (void *arg)
834{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
835 dTHX; 1122 dTHX;
836 1123
837 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
838 UNLOCK; 1125 /* 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; 1126 /* PL_nop = PL_nop->op_next */
842 1127
843 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
844 prepare_cctx (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
845 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
846 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
847 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
848 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
849 1137
850 /* 1138 /*
851 * If perl-run returns we assume exit() was being called or the coro 1139 * 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) 1140 * 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 1141 * 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" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
855 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
856 */ 1144 */
857 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
858 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
859} 1148}
860 1149
861static coro_cctx * 1150static coro_cctx *
862cctx_new () 1151cctx_new ()
863{ 1152{
864 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
865 void *stack_start; 1182 void *stack_start;
866 size_t stack_size; 1183 size_t stack_size;
867 1184
868 ++cctx_count;
869
870 Newz (0, cctx, 1, coro_cctx);
871
872#if HAVE_MMAP 1185#if HAVE_MMAP
873
874 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
875 /* mmap supposedly does allocate-on-write for us */ 1187 /* 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); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
877 1189
878 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
879 { 1191 {
880# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
881 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
882# endif 1194 #endif
883 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
884 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
885 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
886 } 1198 }
887 else 1199 else
888#endif 1200#endif
889 { 1201 {
890 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
891 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
892 1204
893 if (!cctx->sptr) 1205 if (!cctx->sptr)
894 { 1206 {
895 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
896 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
897 } 1209 }
898 1210
899 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
900 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
901 } 1213 }
902 1214
903 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
904 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
905 1220
906 return cctx; 1221 return cctx;
907} 1222}
908 1223
909static void 1224static void
… …
911{ 1226{
912 if (!cctx) 1227 if (!cctx)
913 return; 1228 return;
914 1229
915 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
916 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
917#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
918 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
919#endif 1238 #endif
920 1239
921#if HAVE_MMAP 1240#if HAVE_MMAP
922 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
923 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
924 else 1243 else
925#endif 1244#endif
926 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
927 1247
928 Safefree (cctx); 1248 Safefree (cctx);
929} 1249}
1250
1251/* wether this cctx should be destructed */
1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
930 1253
931static coro_cctx * 1254static coro_cctx *
932cctx_get (pTHX) 1255cctx_get (pTHX)
933{ 1256{
934 while (cctx_first) 1257 while (expect_true (cctx_first))
935 { 1258 {
936 coro_cctx *cctx = cctx_first; 1259 coro_cctx *cctx = cctx_first;
937 cctx_first = cctx->next; 1260 cctx_first = cctx->next;
938 --cctx_idle; 1261 --cctx_idle;
939 1262
940 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1263 if (expect_true (!CCTX_EXPIRED (cctx)))
941 return cctx; 1264 return cctx;
942 1265
943 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
944 } 1267 }
945 1268
946 return cctx_new (); 1269 return cctx_new_run ();
947} 1270}
948 1271
949static void 1272static void
950cctx_put (coro_cctx *cctx) 1273cctx_put (coro_cctx *cctx)
951{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
952 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
953 if (cctx_idle >= MAX_IDLE_CCTX) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
954 { 1279 {
955 coro_cctx *first = cctx_first; 1280 coro_cctx *first = cctx_first;
956 cctx_first = first->next; 1281 cctx_first = first->next;
957 --cctx_idle; 1282 --cctx_idle;
958 1283
… …
964 cctx_first = cctx; 1289 cctx_first = cctx;
965} 1290}
966 1291
967/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
968 1293
969static void NOINLINE 1294static void
970transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
971{ 1296{
972 if (prev != next) 1297 /* TODO: throwing up here is considered harmful */
1298
1299 if (expect_true (prev != next))
973 { 1300 {
974 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1301 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"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
976 1303
977 if (next->flags & CF_RUNNING) 1304 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"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
979 1306
980 if (next->flags & CF_DESTROYED) 1307 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"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
982 1309
1310#if !PERL_VERSION_ATLEAST (5,10,0)
983 if (PL_lex_state != LEX_NOTPARSING) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
984 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif
985 } 1314 }
986} 1315}
987 1316
988/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
989static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
990transfer (pTHX_ struct coro *prev, struct coro *next) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
991{ 1320{
992 dSTACKLEVEL; 1321 dSTACKLEVEL;
993 1322
994 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
995 if (!next) 1324 if (expect_false (!next))
996 { 1325 {
997 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
998 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
999 } 1328 }
1000 else if (prev != next) 1329 else if (expect_true (prev != next))
1001 { 1330 {
1002 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1003 1332
1004 if (prev->flags & CF_NEW) 1333 if (expect_false (prev->flags & CF_NEW))
1005 { 1334 {
1006 /* create a new empty context */ 1335 /* create a new empty/source context */
1007 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1008 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1009 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1010 } 1339 }
1011 1340
1012 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1013 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1014 1343
1015 LOCK; 1344 /* first get rid of the old state */
1345 save_perl (aTHX_ prev);
1016 1346
1017 if (next->flags & CF_NEW) 1347 if (expect_false (next->flags & CF_NEW))
1018 { 1348 {
1019 /* need to start coroutine */ 1349 /* need to start coroutine */
1020 next->flags &= ~CF_NEW; 1350 next->flags &= ~CF_NEW;
1021 /* first get rid of the old state */
1022 save_perl (aTHX_ prev);
1023 /* setup coroutine call */ 1351 /* setup coroutine call */
1024 coro_setup (aTHX_ next); 1352 coro_setup (aTHX_ next);
1025 } 1353 }
1026 else 1354 else
1355 load_perl (aTHX_ next);
1356
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */
1360 if (expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE)
1363 && !force_cctx
1364 ))
1027 { 1365 {
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 */ 1366 /* 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)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1040 1368
1041 prev->cctx = 0; 1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1374 if (!next->cctx)
1375 next->cctx = cctx_get (aTHX);
1042 1376
1043 cctx_put (prev__cctx); 1377 cctx_put (prev__cctx);
1044 } 1378 }
1045 1379
1046 ++next->usecount; 1380 ++next->usecount;
1047 1381
1048 if (!next->cctx) 1382 if (expect_true (!next->cctx))
1049 next->cctx = cctx_get (aTHX); 1383 next->cctx = cctx_get (aTHX);
1050 1384
1051 if (prev__cctx != next->cctx) 1385 if (expect_false (prev__cctx != next->cctx))
1052 { 1386 {
1053 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1054 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1055 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1056 } 1390 }
1057 1391
1058 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1059 UNLOCK;
1060 } 1393 }
1061} 1394}
1062 1395
1063struct transfer_args
1064{
1065 struct coro *prev, *next;
1066};
1067
1068#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#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) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1070 1398
1071/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1072 1400
1073static int 1401static int
1074coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1075{ 1403{
1076 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1077 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1078 1409
1079 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1080 1411
1081 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1082 { 1413 {
1083 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1084 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1085 LOCK;
1086 --coro_nready; 1416 --coro_nready;
1087 UNLOCK;
1088 } 1417 }
1089 else 1418 else
1090 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1091 1420
1092 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1093 { 1422 {
1094 struct coro temp; 1423 struct coro temp;
1095 1424
1096 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1097 croak ("FATAL: tried to destroy currently running coroutine");
1098 1426
1099 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1100 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1101 1429
1102 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1103 1431
1104 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1432 load_perl (aTHX_ &temp);
1105 1433
1106 coro->mainstack = 0; 1434 coro->slot = 0;
1107 } 1435 }
1108 1436
1109 cctx_destroy (coro->cctx); 1437 cctx_destroy (coro->cctx);
1110 SvREFCNT_dec (coro->args); 1438 SvREFCNT_dec (coro->args);
1111 1439
… …
1153# define MGf_DUP 0 1481# define MGf_DUP 0
1154#endif 1482#endif
1155}; 1483};
1156 1484
1157static void 1485static void
1158prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1159{ 1487{
1160 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1161 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1162 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1163} 1491}
1164 1492
1165static void 1493static void
1166api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1167{ 1495{
1168 dTHX;
1169 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1170 1497
1171 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1172 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1173} 1500}
1174 1501
1175/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1176 1503
1177static void 1504INLINE void
1178coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1179{ 1506{
1180 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1181} 1508}
1182 1509
1183static SV * 1510INLINE SV *
1184coro_deq (pTHX_ int min_prio) 1511coro_deq (pTHX)
1185{ 1512{
1186 int prio = PRIO_MAX - PRIO_MIN; 1513 int prio;
1187 1514
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; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1193 if (AvFILLp (coro_ready [prio]) >= 0) 1516 if (AvFILLp (coro_ready [prio]) >= 0)
1194 return av_shift (coro_ready [prio]); 1517 return av_shift (coro_ready [prio]);
1195 1518
1196 return 0; 1519 return 0;
1197} 1520}
1198 1521
1199static int 1522static int
1200api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1201{ 1524{
1202 dTHX;
1203 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1204 1528
1205 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1206 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1207 1531
1208 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1210 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1211 return 0; 1535 return 0;
1212 1536
1213 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1214 1538
1215 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1216 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1217 ++coro_nready; 1543 ++coro_nready;
1218 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1219 1562
1220 return 1; 1563 return 1;
1221} 1564}
1222 1565
1223static int 1566static int
1224api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1225{ 1568{
1226 dTHX;
1227 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1228} 1570}
1229 1571
1230static void 1572INLINE void
1231prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1232{ 1574{
1233 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1234 1576
1235 for (;;) 1577 for (;;)
1236 { 1578 {
1237 LOCK;
1238 next_sv = coro_deq (aTHX_ PRIO_MIN); 1579 next_sv = coro_deq (aTHX);
1239 1580
1240 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1241 if (!next_sv) 1582 if (expect_false (!next_sv))
1242 { 1583 {
1243 dSP; 1584 dSP;
1244 UNLOCK;
1245 1585
1246 ENTER; 1586 ENTER;
1247 SAVETMPS; 1587 SAVETMPS;
1248 1588
1249 PUSHMARK (SP); 1589 PUSHMARK (SP);
1250 PUTBACK; 1590 PUTBACK;
1251 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1252 1592
1253 FREETMPS; 1593 FREETMPS;
1254 LEAVE; 1594 LEAVE;
1255 continue; 1595 continue;
1256 } 1596 }
1257 1597
1258 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1259 1599
1260 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1261 if (ta->next->flags & CF_DESTROYED) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1262 { 1602 {
1263 UNLOCK;
1264 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1265 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1266 continue; 1605 continue;
1267 } 1606 }
1268 1607
1269 --coro_nready; 1608 --coro_nready;
1270 UNLOCK;
1271 break; 1609 break;
1272 } 1610 }
1273 1611
1274 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1275 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1276 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1277 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1278 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1279 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1280 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1281 1619
1282 LOCK;
1283 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1284 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1285 UNLOCK;
1286} 1622}
1287 1623
1288static void 1624INLINE void
1289prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1290{ 1626{
1291 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1292 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1293} 1629}
1294 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1295static int 1654static int
1296prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1297{ 1656{
1298 if (coro_nready) 1657 struct coro_transfer_args ta;
1299 { 1658
1300 SV *prev = SvRV (coro_current);
1301 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1302 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1303 return 1; 1664 return 1;
1304 } 1665 }
1305 else 1666 else
1306 return 0; 1667 return 0;
1307} 1668}
1308 1669
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 1670static int
1320api_cede (void) 1671api_cede_notself (pTHX)
1321{ 1672{
1322 dTHX; 1673 if (coro_nready)
1674 {
1323 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1324 1676
1325 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1326
1327 if (ta.prev != ta.next)
1328 {
1329 TRANSFER (ta); 1678 TRANSFER (ta, 1);
1330 return 1; 1679 return 1;
1331 } 1680 }
1332 else 1681 else
1333 return 0; 1682 return 0;
1334} 1683}
1335 1684
1336static int 1685static 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) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1353{ 1687{
1354 dTHX;
1355 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1356 1689
1357 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1358 { 1691 {
1359 if (!coro->cctx) 1692 if (!coro->cctx)
1360 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1361 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1362 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1363 1696
1364 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1365 } 1698 }
1366 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1367 { 1700 {
1368 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1701 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1369 1702
1370 if (coro->flags & CF_RUNNING) 1703 if (coro->flags & CF_RUNNING)
1371 PL_runops = RUNOPS_DEFAULT; 1704 PL_runops = RUNOPS_DEFAULT;
1372 else 1705 else
1373 coro->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1707 }
1708}
1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1740static void
1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1742{
1743 SV **arg = (SV **)slf_frame.data;
1744
1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1746}
1747
1748static void
1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1750{
1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1374 } 1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 /* make sure we put something on the stack in scalar context */
1846 if (GIMME_V == G_SCALAR)
1847 {
1848 dSP;
1849 SV **bot = PL_stack_base + checkmark;
1850
1851 if (sp == bot) /* too few, push undef */
1852 bot [1] = &PL_sv_undef;
1853 else if (sp != bot + 1) /* too many, take last one */
1854 bot [1] = *sp;
1855
1856 SP = bot + 1;
1857
1858 PUTBACK;
1859 }
1860
1861 /* exception handling */
1862 if (expect_false (coro_throw))
1863 {
1864 SV *exception = sv_2mortal (coro_throw);
1865
1866 coro_throw = 0;
1867 sv_setsv (ERRSV, exception);
1868 croak (0);
1869 }
1870
1871 return NORMAL;
1375} 1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1923
1924/*****************************************************************************/
1925/* PerlIO::cede */
1926
1927typedef struct
1928{
1929 PerlIOBuf base;
1930 NV next, every;
1931} PerlIOCede;
1932
1933static IV
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every;
1940
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942}
1943
1944static SV *
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948
1949 return newSVnv (self->every);
1950}
1951
1952static IV
1953PerlIOCede_flush (pTHX_ PerlIO *f)
1954{
1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1956 double now = nvtime ();
1957
1958 if (now >= self->next)
1959 {
1960 api_cede (aTHX);
1961 self->next = now + self->every;
1962 }
1963
1964 return PerlIOBuf_flush (aTHX_ f);
1965}
1966
1967static PerlIO_funcs PerlIO_cede =
1968{
1969 sizeof(PerlIO_funcs),
1970 "cede",
1971 sizeof(PerlIOCede),
1972 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1973 PerlIOCede_pushed,
1974 PerlIOBuf_popped,
1975 PerlIOBuf_open,
1976 PerlIOBase_binmode,
1977 PerlIOCede_getarg,
1978 PerlIOBase_fileno,
1979 PerlIOBuf_dup,
1980 PerlIOBuf_read,
1981 PerlIOBuf_unread,
1982 PerlIOBuf_write,
1983 PerlIOBuf_seek,
1984 PerlIOBuf_tell,
1985 PerlIOBuf_close,
1986 PerlIOCede_flush,
1987 PerlIOBuf_fill,
1988 PerlIOBase_eof,
1989 PerlIOBase_error,
1990 PerlIOBase_clearerr,
1991 PerlIOBase_setlinebuf,
1992 PerlIOBuf_get_base,
1993 PerlIOBuf_bufsiz,
1994 PerlIOBuf_get_ptr,
1995 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt,
1997};
1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{
2005 SV *count_sv = AvARRAY (av)[0];
2006 IV count = SvIVX (count_sv);
2007
2008 count += adjust;
2009 SvIVX (count_sv) = count;
2010
2011 /* now wake up as many waiters as are expected to lock */
2012 while (count > 0 && AvFILLp (av) > 0)
2013 {
2014 SV *cb;
2015
2016 /* swap first two elements so we can shift a waiter */
2017 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av);
2020
2021 if (SvOBJECT (cb))
2022 api_ready (aTHX_ cb);
2023 else
2024 croak ("callbacks not yet supported");
2025
2026 SvREFCNT_dec (cb);
2027
2028 --count;
2029 }
2030}
2031
2032static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2034{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037}
2038
2039static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2041{
2042 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0];
2044
2045 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (coro_throw && 0)//D
2047 return 0;
2048 else if (SvIVX (count_sv) > 0)
2049 {
2050 SvSTATE_current->on_destroy = 0;
2051 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2052 return 0;
2053 }
2054 else
2055 {
2056 int i;
2057 /* if we were woken up but can't down, we look through the whole */
2058 /* waiters list and only add us if we aren't in there already */
2059 /* this avoids some degenerate memory usage cases */
2060
2061 for (i = 1; i <= AvFILLp (av); ++i)
2062 if (AvARRAY (av)[i] == SvRV (coro_current))
2063 return 1;
2064
2065 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2066 return 1;
2067 }
2068}
2069
2070static void
2071slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072{
2073 AV *av = (AV *)SvRV (arg [0]);
2074
2075 if (SvIVX (AvARRAY (av)[0]) > 0)
2076 {
2077 frame->data = (void *)av;
2078 frame->prepare = prepare_nop;
2079 }
2080 else
2081 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 }
2091
2092 frame->check = slf_check_semaphore_down;
2093
2094}
2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)newSV (0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120/* Coro::AIO */
2121
2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2123
2124/* helper storage struct */
2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
2131};
2132
2133static void
2134coro_aio_callback (pTHX_ CV *cv)
2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
2195 dSP;
2196 int i;
2197
2198 EXTEND (SP, AvFILLp (state) + 1);
2199 for (i = 0; i <= AvFILLp (state); ++i)
2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
2220 {
2221 dSP;
2222
2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
2238 }
2239
2240 /* now call the original request */
2241 {
2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
2245
2246 PUSHMARK (SP);
2247
2248 /* first push all args to the stack */
2249 EXTEND (SP, items + 1);
2250
2251 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]);
2253
2254 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256
2257 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 }
2261
2262 /* now that the requets is going, we loop toll we have a result */
2263 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req;
2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
1376 2279
1377MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1378 2281
1379PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
1380 2283
1381BOOT: 2284BOOT:
1382{ 2285{
1383#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
1384 MUTEX_INIT (&coro_mutex); 2287# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT;
2289# endif
1385#endif 2290#endif
1386 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
1387 2292
1388 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1389 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2295
2296 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2297 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2298 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2299
2300 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2301 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2302 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1390 2303
1391 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2304 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1392 2305
1393 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2306 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1394 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2307 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1399 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
1400 2313
1401 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
1402 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
1403 2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2328
1404 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
2330 coroapi.rev = CORO_API_REVISION;
2331
1405 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
2333
2334 coroapi.sv_state = SvSTATE_;
2335 coroapi.execute_slf = api_execute_slf;
2336 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself;
2340
2341 {
2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2343
2344 if (!svp) croak ("Time::HiRes is required");
2345 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2346
2347 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2348 }
1406 2349
1407 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2350 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1408} 2351}
1409 2352
1410SV * 2353SV *
1411new (char *klass, ...) 2354new (char *klass, ...)
1412 CODE: 2355 CODE:
1413{ 2356{
1414 struct coro *coro; 2357 struct coro *coro;
2358 MAGIC *mg;
1415 HV *hv; 2359 HV *hv;
1416 int i; 2360 int i;
1417 2361
1418 Newz (0, coro, 1, struct coro); 2362 Newz (0, coro, 1, struct coro);
1419 coro->args = newAV (); 2363 coro->args = newAV ();
… …
1422 if (coro_first) coro_first->prev = coro; 2366 if (coro_first) coro_first->prev = coro;
1423 coro->next = coro_first; 2367 coro->next = coro_first;
1424 coro_first = coro; 2368 coro_first = coro;
1425 2369
1426 coro->hv = hv = newHV (); 2370 coro->hv = hv = newHV ();
1427 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2371 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2372 mg->mg_flags |= MGf_DUP;
1428 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2373 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1429 2374
2375 av_extend (coro->args, items - 1);
1430 for (i = 1; i < items; i++) 2376 for (i = 1; i < items; i++)
1431 av_push (coro->args, newSVsv (ST (i))); 2377 av_push (coro->args, newSVsv (ST (i)));
1432} 2378}
1433 OUTPUT: 2379 OUTPUT:
1434 RETVAL 2380 RETVAL
1435 2381
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 2382void
1440_set_stacklevel (...) 2383transfer (...)
1441 ALIAS: 2384 PROTOTYPE: $$
1442 Coro::State::transfer = 1 2385 CODE:
1443 Coro::schedule = 2 2386 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 2387
1486bool 2388bool
1487_destroy (SV *coro_sv) 2389_destroy (SV *coro_sv)
1488 CODE: 2390 CODE:
1489 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2391 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1490 OUTPUT: 2392 OUTPUT:
1491 RETVAL 2393 RETVAL
1492 2394
1493void 2395void
1494_exit (code) 2396_exit (int code)
1495 int code
1496 PROTOTYPE: $ 2397 PROTOTYPE: $
1497 CODE: 2398 CODE:
1498 _exit (code); 2399 _exit (code);
1499 2400
1500int 2401int
1501cctx_stacksize (int new_stacksize = 0) 2402cctx_stacksize (int new_stacksize = 0)
2403 PROTOTYPE: ;$
1502 CODE: 2404 CODE:
1503 RETVAL = coro_stacksize; 2405 RETVAL = cctx_stacksize;
1504 if (new_stacksize) 2406 if (new_stacksize)
2407 {
1505 coro_stacksize = new_stacksize; 2408 cctx_stacksize = new_stacksize;
2409 ++cctx_gen;
2410 }
1506 OUTPUT: 2411 OUTPUT:
1507 RETVAL 2412 RETVAL
1508 2413
1509int 2414int
2415cctx_max_idle (int max_idle = 0)
2416 PROTOTYPE: ;$
2417 CODE:
2418 RETVAL = cctx_max_idle;
2419 if (max_idle > 1)
2420 cctx_max_idle = max_idle;
2421 OUTPUT:
2422 RETVAL
2423
2424int
1510cctx_count () 2425cctx_count ()
2426 PROTOTYPE:
1511 CODE: 2427 CODE:
1512 RETVAL = cctx_count; 2428 RETVAL = cctx_count;
1513 OUTPUT: 2429 OUTPUT:
1514 RETVAL 2430 RETVAL
1515 2431
1516int 2432int
1517cctx_idle () 2433cctx_idle ()
2434 PROTOTYPE:
1518 CODE: 2435 CODE:
1519 RETVAL = cctx_idle; 2436 RETVAL = cctx_idle;
1520 OUTPUT: 2437 OUTPUT:
1521 RETVAL 2438 RETVAL
1522 2439
1523void 2440void
1524list () 2441list ()
2442 PROTOTYPE:
1525 PPCODE: 2443 PPCODE:
1526{ 2444{
1527 struct coro *coro; 2445 struct coro *coro;
1528 for (coro = coro_first; coro; coro = coro->next) 2446 for (coro = coro_first; coro; coro = coro->next)
1529 if (coro->hv) 2447 if (coro->hv)
… …
1534call (Coro::State coro, SV *coderef) 2452call (Coro::State coro, SV *coderef)
1535 ALIAS: 2453 ALIAS:
1536 eval = 1 2454 eval = 1
1537 CODE: 2455 CODE:
1538{ 2456{
1539 if (coro->mainstack) 2457 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1540 { 2458 {
1541 struct coro temp; 2459 struct coro temp;
1542 Zero (&temp, 1, struct coro);
1543 2460
1544 if (!(coro->flags & CF_RUNNING)) 2461 if (!(coro->flags & CF_RUNNING))
1545 { 2462 {
2463 PUTBACK;
1546 save_perl (aTHX_ &temp); 2464 save_perl (aTHX_ &temp);
1547 load_perl (aTHX_ coro); 2465 load_perl (aTHX_ coro);
1548 } 2466 }
1549 2467
1550 { 2468 {
1551 dSP; 2469 dSP;
1552 ENTER; 2470 ENTER;
1553 SAVETMPS; 2471 SAVETMPS;
2472 PUTBACK;
2473 PUSHSTACK;
1554 PUSHMARK (SP); 2474 PUSHMARK (SP);
1555 PUTBACK; 2475
1556 if (ix) 2476 if (ix)
1557 eval_sv (coderef, 0); 2477 eval_sv (coderef, 0);
1558 else 2478 else
1559 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2479 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2480
2481 POPSTACK;
1560 SPAGAIN; 2482 SPAGAIN;
1561 FREETMPS; 2483 FREETMPS;
1562 LEAVE; 2484 LEAVE;
1563 PUTBACK; 2485 PUTBACK;
1564 } 2486 }
1565 2487
1566 if (!(coro->flags & CF_RUNNING)) 2488 if (!(coro->flags & CF_RUNNING))
1567 { 2489 {
1568 save_perl (aTHX_ coro); 2490 save_perl (aTHX_ coro);
1569 load_perl (aTHX_ &temp); 2491 load_perl (aTHX_ &temp);
2492 SPAGAIN;
1570 } 2493 }
1571 } 2494 }
1572} 2495}
1573 2496
1574SV * 2497SV *
… …
1583 RETVAL = boolSV (coro->flags & ix); 2506 RETVAL = boolSV (coro->flags & ix);
1584 OUTPUT: 2507 OUTPUT:
1585 RETVAL 2508 RETVAL
1586 2509
1587void 2510void
2511throw (Coro::State self, SV *throw = &PL_sv_undef)
2512 PROTOTYPE: $;$
2513 CODE:
2514{
2515 struct coro *current = SvSTATE_current;
2516 SV **throwp = self == current ? &coro_throw : &self->throw;
2517 SvREFCNT_dec (*throwp);
2518 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2519}
2520
2521void
1588api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2522api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2523 PROTOTYPE: $;$
2524 C_ARGS: aTHX_ coro, flags
1589 2525
1590SV * 2526SV *
1591has_stack (Coro::State coro) 2527has_cctx (Coro::State coro)
1592 PROTOTYPE: $ 2528 PROTOTYPE: $
1593 CODE: 2529 CODE:
1594 RETVAL = boolSV (!!coro->cctx); 2530 RETVAL = boolSV (!!coro->cctx);
1595 OUTPUT: 2531 OUTPUT:
1596 RETVAL 2532 RETVAL
… …
1601 CODE: 2537 CODE:
1602 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2538 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1603 OUTPUT: 2539 OUTPUT:
1604 RETVAL 2540 RETVAL
1605 2541
1606IV 2542UV
1607rss (Coro::State coro) 2543rss (Coro::State coro)
1608 PROTOTYPE: $ 2544 PROTOTYPE: $
1609 ALIAS: 2545 ALIAS:
1610 usecount = 1 2546 usecount = 1
1611 CODE: 2547 CODE:
… …
1615 case 1: RETVAL = coro->usecount; break; 2551 case 1: RETVAL = coro->usecount; break;
1616 } 2552 }
1617 OUTPUT: 2553 OUTPUT:
1618 RETVAL 2554 RETVAL
1619 2555
2556void
2557force_cctx ()
2558 PROTOTYPE:
2559 CODE:
2560 SvSTATE_current->cctx->idle_sp = 0;
2561
2562void
2563swap_defsv (Coro::State self)
2564 PROTOTYPE: $
2565 ALIAS:
2566 swap_defav = 1
2567 CODE:
2568 if (!self->slot)
2569 croak ("cannot swap state with coroutine that has no saved state,");
2570 else
2571 {
2572 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2573 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2574
2575 SV *tmp = *src; *src = *dst; *dst = tmp;
2576 }
2577
1620 2578
1621MODULE = Coro::State PACKAGE = Coro 2579MODULE = Coro::State PACKAGE = Coro
1622 2580
1623BOOT: 2581BOOT:
1624{ 2582{
1625 int i; 2583 int i;
1626 2584
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); 2585 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2586 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2587 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1630 2588
1631 coro_current = get_sv ("Coro::current", FALSE); 2589 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1632 SvREADONLY_on (coro_current); 2590 SvREADONLY_on (coro_current);
1633 2591
1634 coro_stash = gv_stashpv ("Coro", TRUE); 2592 coro_stash = gv_stashpv ("Coro", TRUE);
1635 2593
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2594 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2595 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2596 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2597 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1642 2600
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2601 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV (); 2602 coro_ready[i] = newAV ();
1645 2603
1646 { 2604 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 2605 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 2606
1649 coroapi.schedule = api_schedule; 2607 coroapi.schedule = api_schedule;
1650 coroapi.cede = api_cede; 2608 coroapi.cede = api_cede;
1651 coroapi.cede_notself = api_cede_notself; 2609 coroapi.cede_notself = api_cede_notself;
1652 coroapi.ready = api_ready; 2610 coroapi.ready = api_ready;
1653 coroapi.is_ready = api_is_ready; 2611 coroapi.is_ready = api_is_ready;
1654 coroapi.nready = &coro_nready; 2612 coroapi.nready = coro_nready;
1655 coroapi.current = coro_current; 2613 coroapi.current = coro_current;
1656 2614
1657 GCoroAPI = &coroapi; 2615 GCoroAPI = &coroapi;
1658 sv_setiv (sv, (IV)&coroapi); 2616 sv_setiv (sv, (IV)&coroapi);
1659 SvREADONLY_on (sv); 2617 SvREADONLY_on (sv);
1660 } 2618 }
1661} 2619}
2620
2621void
2622schedule (...)
2623 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2625
2626void
2627cede (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_cede);
2630
2631void
2632cede_notself (...)
2633 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1662 2635
1663void 2636void
1664_set_current (SV *current) 2637_set_current (SV *current)
1665 PROTOTYPE: $ 2638 PROTOTYPE: $
1666 CODE: 2639 CODE:
1667 SvREFCNT_dec (SvRV (coro_current)); 2640 SvREFCNT_dec (SvRV (coro_current));
1668 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2641 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2642
2643void
2644_set_readyhook (SV *hook)
2645 PROTOTYPE: $
2646 CODE:
2647 SvREFCNT_dec (coro_readyhook);
2648 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1669 2649
1670int 2650int
1671prio (Coro::State coro, int newprio = 0) 2651prio (Coro::State coro, int newprio = 0)
2652 PROTOTYPE: $;$
1672 ALIAS: 2653 ALIAS:
1673 nice = 1 2654 nice = 1
1674 CODE: 2655 CODE:
1675{ 2656{
1676 RETVAL = coro->prio; 2657 RETVAL = coro->prio;
… …
1691 2672
1692SV * 2673SV *
1693ready (SV *self) 2674ready (SV *self)
1694 PROTOTYPE: $ 2675 PROTOTYPE: $
1695 CODE: 2676 CODE:
1696 RETVAL = boolSV (api_ready (self)); 2677 RETVAL = boolSV (api_ready (aTHX_ self));
1697 OUTPUT: 2678 OUTPUT:
1698 RETVAL 2679 RETVAL
1699 2680
1700int 2681int
1701nready (...) 2682nready (...)
… …
1708# for async_pool speedup 2689# for async_pool speedup
1709void 2690void
1710_pool_1 (SV *cb) 2691_pool_1 (SV *cb)
1711 CODE: 2692 CODE:
1712{ 2693{
1713 struct coro *coro = SvSTATE (coro_current);
1714 HV *hv = (HV *)SvRV (coro_current); 2694 HV *hv = (HV *)SvRV (coro_current);
2695 struct coro *coro = SvSTATE_hv ((SV *)hv);
1715 AV *defav = GvAV (PL_defgv); 2696 AV *defav = GvAV (PL_defgv);
1716 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2697 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1717 AV *invoke_av; 2698 AV *invoke_av;
1718 int i, len; 2699 int i, len;
1719 2700
1720 if (!invoke) 2701 if (!invoke)
2702 {
2703 SV *old = PL_diehook;
2704 PL_diehook = 0;
2705 SvREFCNT_dec (old);
1721 croak ("\3terminate\2\n"); 2706 croak ("\3async_pool terminate\2\n");
2707 }
1722 2708
1723 SvREFCNT_dec (coro->saved_deffh); 2709 SvREFCNT_dec (coro->saved_deffh);
1724 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2710 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1725 2711
1726 hv_store (hv, "desc", sizeof ("desc") - 1, 2712 hv_store (hv, "desc", sizeof ("desc") - 1,
1727 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2713 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1728 2714
1729 invoke_av = (AV *)SvRV (invoke); 2715 invoke_av = (AV *)SvRV (invoke);
… …
1733 2719
1734 if (len > 0) 2720 if (len > 0)
1735 { 2721 {
1736 av_fill (defav, len - 1); 2722 av_fill (defav, len - 1);
1737 for (i = 0; i < len; ++i) 2723 for (i = 0; i < len; ++i)
1738 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2724 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1739 } 2725 }
1740
1741 SvREFCNT_dec (invoke);
1742} 2726}
1743 2727
1744void 2728void
1745_pool_2 (SV *cb) 2729_pool_2 (SV *cb)
1746 CODE: 2730 CODE:
1747{ 2731{
1748 struct coro *coro = SvSTATE (coro_current); 2732 HV *hv = (HV *)SvRV (coro_current);
2733 struct coro *coro = SvSTATE_hv ((SV *)hv);
1749 2734
1750 sv_setsv (cb, &PL_sv_undef); 2735 sv_setsv (cb, &PL_sv_undef);
1751 2736
1752 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2737 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1753 coro->saved_deffh = 0; 2738 coro->saved_deffh = 0;
1754 2739
1755 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2740 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1756 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2741 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2742 {
2743 SV *old = PL_diehook;
2744 PL_diehook = 0;
2745 SvREFCNT_dec (old);
1757 croak ("\3terminate\2\n"); 2746 croak ("\3async_pool terminate\2\n");
2747 }
1758 2748
1759 av_clear (GvAV (PL_defgv)); 2749 av_clear (GvAV (PL_defgv));
1760 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2750 hv_store (hv, "desc", sizeof ("desc") - 1,
1761 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2751 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1762 2752
1763 coro->prio = 0; 2753 coro->prio = 0;
1764 2754
1765 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2755 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1766 api_trace (coro_current, 0); 2756 api_trace (aTHX_ coro_current, 0);
1767 2757
1768 av_push (av_async_pool, newSVsv (coro_current)); 2758 av_push (av_async_pool, newSVsv (coro_current));
1769} 2759}
1770 2760
1771 2761
2762MODULE = Coro::State PACKAGE = PerlIO::cede
2763
2764BOOT:
2765 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2766
2767
1772MODULE = Coro::State PACKAGE = Coro::AIO 2768MODULE = Coro::State PACKAGE = Coro::Semaphore
1773 2769
1774SV * 2770SV *
1775_get_state () 2771new (SV *klass, SV *count_ = 0)
1776 CODE: 2772 CODE:
1777{ 2773{
1778 struct io_state *data; 2774 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2775 AV *av = newAV ();
2776 SV **ary;
1779 2777
1780 RETVAL = newSV (sizeof (struct io_state)); 2778 /* unfortunately, building manually saves memory */
1781 data = (struct io_state *)SvPVX (RETVAL); 2779 Newx (ary, 2, SV *);
1782 SvCUR_set (RETVAL, sizeof (struct io_state)); 2780 AvALLOC (av) = ary;
1783 SvPOK_only (RETVAL); 2781 AvARRAY (av) = ary;
2782 AvMAX (av) = 1;
2783 AvFILLp (av) = 0;
2784 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
1784 2785
1785 data->errorno = errno; 2786 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} 2787}
1790 OUTPUT: 2788 OUTPUT:
1791 RETVAL 2789 RETVAL
1792 2790
2791SV *
2792count (SV *self)
2793 CODE:
2794 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2795 OUTPUT:
2796 RETVAL
2797
1793void 2798void
1794_set_state (char *data_) 2799up (SV *self, int adjust = 1)
1795 PROTOTYPE: $ 2800 ALIAS:
2801 adjust = 1
2802 CODE:
2803 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2804
2805void
2806down (SV *self)
2807 CODE:
2808 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2809
2810void
2811try (SV *self)
2812 PPCODE:
2813{
2814 AV *av = (AV *)SvRV (self);
2815 SV *count_sv = AvARRAY (av)[0];
2816 IV count = SvIVX (count_sv);
2817
2818 if (count > 0)
2819 {
2820 --count;
2821 SvIVX (count_sv) = count;
2822 XSRETURN_YES;
2823 }
2824 else
2825 XSRETURN_NO;
2826}
2827
2828void
2829waiters (SV *self)
2830 CODE:
2831{
2832 AV *av = (AV *)SvRV (self);
2833
2834 if (GIMME_V == G_SCALAR)
2835 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2836 else
2837 {
2838 int i;
2839 EXTEND (SP, AvFILLp (av) + 1 - 1);
2840 for (i = 1; i <= AvFILLp (av); ++i)
2841 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2842 }
2843}
2844
2845
2846MODULE = Coro::State PACKAGE = Coro::AnyEvent
2847
2848BOOT:
2849 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2850
2851void
2852_schedule (...)
1796 CODE: 2853 CODE:
1797{ 2854{
1798 struct io_state *data = (void *)data_; 2855 static int incede;
1799 2856
1800 errno = data->errorno; 2857 api_cede_notself (aTHX);
1801 PL_laststype = data->laststype;
1802 PL_laststatval = data->laststatval;
1803 PL_statcache = data->statcache;
1804}
1805 2858
2859 ++incede;
2860 while (coro_nready >= incede && api_cede (aTHX))
2861 ;
2862
2863 sv_setsv (sv_activity, &PL_sv_undef);
2864 if (coro_nready >= incede)
2865 {
2866 PUSHMARK (SP);
2867 PUTBACK;
2868 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2869 }
2870
2871 --incede;
2872}
2873
2874
2875MODULE = Coro::State PACKAGE = Coro::AIO
2876
2877void
2878_register (char *target, char *proto, SV *req)
2879 CODE:
2880{
2881 HV *st;
2882 GV *gvp;
2883 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2884 /* newXSproto doesn't return the CV on 5.8 */
2885 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2886 sv_setpv ((SV *)slf_cv, proto);
2887 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2888}
2889

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines