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Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.292 by root, Tue Nov 18 06:09:35 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#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
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
38#endif 51#endif
39 52
40/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
42 55
43#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
65# ifndef IS_PADCONST 78# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
67# endif 80# endif
68#endif 81#endif
69 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
70/* 5.8.7 */ 104/* 5.8.7 */
71#ifndef SvRV_set 105#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 107#endif
74 108
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 110# undef CORO_STACKGUARD
77#endif 111#endif
78 112
79#ifndef STACKGUARD 113#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 114# define CORO_STACKGUARD 0
81#endif 115#endif
82 116
83/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 120#endif
87 121
88/* The next macro should declare a variable stacklevel that contains and approximation 122/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 123 * portable way as possible. */
90 * and should be unique. */ 124#if __GNUC__ >= 4
91#define dSTACKLEVEL int stacklevel 125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
92#define STACKLEVEL ((void *)&stacklevel) 126#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
128#endif
93 129
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 130#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 131
96#if __GNUC__ >= 3 132#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 133# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
99#else 136#else
100# define attribute(x) 137# define attribute(x)
101# define BARRIER 138# define expect(expr,value) (expr)
139# define INLINE static
102#endif 140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
103 144
104#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
105 146
106#include "CoroAPI.h" 147#include "CoroAPI.h"
107 148
108#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
109static perl_mutex coro_mutex; 150# if CORO_PTHREAD
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 151static void *coro_thx;
111# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
112#else
113# define LOCK (void)0
114# define UNLOCK (void)0
115#endif 152# endif
153#endif
116 154
117struct io_state 155static double (*nvtime)(); /* so why doesn't it take void? */
118{
119 int errorno;
120 I32 laststype;
121 int laststatval;
122 Stat_t statcache;
123};
124 156
157/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX);
160
161static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 163static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 164static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 166static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168
169static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook;
172static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */
174
175/* async_pool helper stuff */
176static SV *sv_pool_rss;
177static SV *sv_pool_size;
178static AV *av_async_pool;
179
180/* Coro::AnyEvent */
181static SV *sv_activity;
129 182
130static struct coro_cctx *cctx_first; 183static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 184static int cctx_count, cctx_idle;
132 185
186enum {
187 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */
192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
193};
194
133/* this is a structure representing a c-level coroutine */ 195/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 196typedef struct coro_cctx
197{
135 struct coro_cctx *next; 198 struct coro_cctx *next;
136 199
137 /* the stack */ 200 /* the stack */
138 void *sptr; 201 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 202 size_t ssize;
140 203
141 /* cpu state */ 204 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 205 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 206 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 207 JMPENV *top_env;
145 coro_context cctx; 208 coro_context cctx;
146 209
147 int inuse; 210 U32 gen;
148
149#if USE_VALGRIND 211#if CORO_USE_VALGRIND
150 int valgrind_id; 212 int valgrind_id;
151#endif 213#endif
214 unsigned char flags;
152} coro_cctx; 215} coro_cctx;
153 216
154enum { 217enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 218 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 219 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* ahs never been switched to */ 220 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158}; 222};
159 223
160/* this is a structure representing a perl-level coroutine */ 224/* the structure where most of the perl state is stored, overlaid on the cxstack */
161struct coro { 225typedef struct
162 /* the c coroutine allocated to this perl coroutine, if any */ 226{
163 coro_cctx *cctx; 227 SV *defsv;
164 228 AV *defav;
165 /* data associated with this coroutine (initial args) */ 229 SV *errsv;
166 AV *args; 230 SV *irsgv;
167 int refcnt;
168 int save; /* CORO_SAVE flags */
169 int flags; /* CF_ flags */
170
171 /* optionally saved, might be zero */
172 AV *defav; /* @_ */
173 SV *defsv; /* $_ */
174 SV *errsv; /* $@ */
175 SV *irssv; /* $/ */
176 SV *irssv_sv; /* real $/ cache */
177
178#define VAR(name,type) type name; 231#define VAR(name,type) type name;
179# include "state.h" 232# include "state.h"
180#undef VAR 233#undef VAR
234} perl_slots;
235
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237
238/* this is a structure representing a perl-level coroutine */
239struct coro {
240 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx;
242
243 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */
247
248 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253
254 /* statistics */
255 int usecount; /* number of transfers to this coro */
181 256
182 /* coro process data */ 257 /* coro process data */
183 int prio; 258 int prio;
259 SV *throw; /* exception to be thrown */
260
261 /* async_pool */
262 SV *saved_deffh;
263
264 /* linked list */
265 struct coro *next, *prev;
184}; 266};
185 267
186typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
187typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
188 270
271/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276
277/** Coro ********************************************************************/
278
279#define PRIO_MAX 3
280#define PRIO_HIGH 1
281#define PRIO_NORMAL 0
282#define PRIO_LOW -1
283#define PRIO_IDLE -3
284#define PRIO_MIN -4
285
286/* for Coro.pm */
287static SV *coro_current;
288static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
290static struct coro *coro_first;
291#define coro_nready coroapi.nready
292
293/** lowlevel stuff **********************************************************/
294
295static SV *
296coro_get_sv (pTHX_ const char *name, int create)
297{
298#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create);
301#endif
302 return get_sv (name, create);
303}
304
189static AV * 305static AV *
306coro_get_av (pTHX_ const char *name, int create)
307{
308#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create);
311#endif
312 return get_av (name, create);
313}
314
315static HV *
316coro_get_hv (pTHX_ const char *name, int create)
317{
318#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create);
321#endif
322 return get_hv (name, create);
323}
324
325static AV *
190coro_clone_padlist (CV *cv) 326coro_clone_padlist (pTHX_ CV *cv)
191{ 327{
192 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
193 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
194 330
195 newpadlist = newAV (); 331 newpadlist = newAV ();
196 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
197#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
198 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
199#else 335#else
200 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
201#endif 337#endif
202 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
203 --AvFILLp (padlist); 339 --AvFILLp (padlist);
204 340
205 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
206 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
207 343
208 return newpadlist; 344 return newpadlist;
209} 345}
210 346
211static void 347static void
212free_padlist (AV *padlist) 348free_padlist (pTHX_ AV *padlist)
213{ 349{
214 /* may be during global destruction */ 350 /* may be during global destruction */
215 if (SvREFCNT (padlist)) 351 if (SvREFCNT (padlist))
216 { 352 {
217 I32 i = AvFILLp (padlist); 353 I32 i = AvFILLp (padlist);
… …
238 AV *padlist; 374 AV *padlist;
239 AV *av = (AV *)mg->mg_obj; 375 AV *av = (AV *)mg->mg_obj;
240 376
241 /* casting is fun. */ 377 /* casting is fun. */
242 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
243 free_padlist (padlist); 379 free_padlist (aTHX_ padlist);
244 380
245 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
246 382
247 return 0; 383 return 0;
248} 384}
249 385
386#define CORO_MAGIC_type_cv 26
250#define PERL_MAGIC_coro PERL_MAGIC_ext 387#define CORO_MAGIC_type_state PERL_MAGIC_ext
251 388
252static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
253 393
254#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
255 SvMAGIC (cv) \ 396 ? SvMAGIC (sv) \
256 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 397 : mg_find (sv, type))
257 ? SvMAGIC (cv) \ 398
258 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
259 : 0 402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
260 436
261/* the next two functions merely cache the padlists */ 437/* the next two functions merely cache the padlists */
262static void 438static void
263get_padlist (CV *cv) 439get_padlist (pTHX_ CV *cv)
264{ 440{
265 MAGIC *mg = CORO_MAGIC (cv); 441 MAGIC *mg = CORO_MAGIC_cv (cv);
266 AV *av; 442 AV *av;
267 443
268 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 444 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
269 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 445 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270 else 446 else
271 { 447 {
272#if PREFER_PERL_FUNCTIONS 448#if CORO_PREFER_PERL_FUNCTIONS
273 /* this is probably cleaner, but also slower? */ 449 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */
274 CV *cp = Perl_cv_clone (cv); 451 CV *cp = Perl_cv_clone (cv);
275 CvPADLIST (cv) = CvPADLIST (cp); 452 CvPADLIST (cv) = CvPADLIST (cp);
276 CvPADLIST (cp) = 0; 453 CvPADLIST (cp) = 0;
277 SvREFCNT_dec (cp); 454 SvREFCNT_dec (cp);
278#else 455#else
279 CvPADLIST (cv) = coro_clone_padlist (cv); 456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280#endif 457#endif
281 } 458 }
282} 459}
283 460
284static void 461static void
285put_padlist (CV *cv) 462put_padlist (pTHX_ CV *cv)
286{ 463{
287 MAGIC *mg = CORO_MAGIC (cv); 464 MAGIC *mg = CORO_MAGIC_cv (cv);
288 AV *av; 465 AV *av;
289 466
290 if (!mg) 467 if (expect_false (!mg))
291 { 468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
292 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
293 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
294 mg->mg_virtual = &vtbl_coro;
295 mg->mg_obj = (SV *)newAV ();
296 }
297 469
298 av = (AV *)mg->mg_obj; 470 av = (AV *)mg->mg_obj;
299 471
300 if (AvFILLp (av) >= AvMAX (av)) 472 if (expect_false (AvFILLp (av) >= AvMAX (av)))
301 av_extend (av, AvMAX (av) + 1); 473 av_extend (av, AvMAX (av) + 1);
302 474
303 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304} 476}
305 477
306#define SB do { 478/** load & save, init *******************************************************/
307#define SE } while (0)
308 479
309#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310
311static void 480static void
312load_perl (Coro__State c) 481load_perl (pTHX_ Coro__State c)
313{ 482{
483 perl_slots *slot = c->slot;
484 c->slot = 0;
485
486 PL_mainstack = c->mainstack;
487
488 GvSV (PL_defgv) = slot->defsv;
489 GvAV (PL_defgv) = slot->defav;
490 GvSV (PL_errgv) = slot->errsv;
491 GvSV (irsgv) = slot->irsgv;
492
314#define VAR(name,type) PL_ ## name = c->name; 493 #define VAR(name,type) PL_ ## name = slot->name;
315# include "state.h" 494 # include "state.h"
316#undef VAR 495 #undef VAR
317
318 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
321 if (c->irssv)
322 {
323 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
324 SvREFCNT_dec (c->irssv);
325 else
326 {
327 REPLACE_SV (PL_rs, c->irssv);
328 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329 sv_setsv (c->irssv_sv, PL_rs);
330 }
331 }
332 496
333 { 497 {
334 dSP; 498 dSP;
499
335 CV *cv; 500 CV *cv;
336 501
337 /* now do the ugly restore mess */ 502 /* now do the ugly restore mess */
338 while ((cv = (CV *)POPs)) 503 while (expect_true (cv = (CV *)POPs))
339 { 504 {
340 put_padlist (cv); /* mark this padlist as available */ 505 put_padlist (aTHX_ cv); /* mark this padlist as available */
341 CvDEPTH (cv) = PTR2IV (POPs); 506 CvDEPTH (cv) = PTR2IV (POPs);
342 CvPADLIST (cv) = (AV *)POPs; 507 CvPADLIST (cv) = (AV *)POPs;
343 } 508 }
344 509
345 PUTBACK; 510 PUTBACK;
346 } 511 }
347}
348 512
513 slf_frame = c->slf_frame;
514 coro_throw = c->throw;
515}
516
349static void 517static void
350save_perl (Coro__State c) 518save_perl (pTHX_ Coro__State c)
351{ 519{
520 c->throw = coro_throw;
521 c->slf_frame = slf_frame;
522
352 { 523 {
353 dSP; 524 dSP;
354 I32 cxix = cxstack_ix; 525 I32 cxix = cxstack_ix;
355 PERL_CONTEXT *ccstk = cxstack; 526 PERL_CONTEXT *ccstk = cxstack;
356 PERL_SI *top_si = PL_curstackinfo; 527 PERL_SI *top_si = PL_curstackinfo;
… …
358 /* 529 /*
359 * the worst thing you can imagine happens first - we have to save 530 * the worst thing you can imagine happens first - we have to save
360 * (and reinitialize) all cv's in the whole callchain :( 531 * (and reinitialize) all cv's in the whole callchain :(
361 */ 532 */
362 533
363 EXTEND (SP, 3 + 1);
364 PUSHs (Nullsv); 534 XPUSHs (Nullsv);
365 /* this loop was inspired by pp_caller */ 535 /* this loop was inspired by pp_caller */
366 for (;;) 536 for (;;)
367 { 537 {
368 while (cxix >= 0) 538 while (expect_true (cxix >= 0))
369 { 539 {
370 PERL_CONTEXT *cx = &ccstk[cxix--]; 540 PERL_CONTEXT *cx = &ccstk[cxix--];
371 541
372 if (CxTYPE (cx) == CXt_SUB) 542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
373 { 543 {
374 CV *cv = cx->blk_sub.cv; 544 CV *cv = cx->blk_sub.cv;
375 545
376 if (CvDEPTH (cv)) 546 if (expect_true (CvDEPTH (cv)))
377 { 547 {
378 EXTEND (SP, 3); 548 EXTEND (SP, 3);
379 PUSHs ((SV *)CvPADLIST (cv)); 549 PUSHs ((SV *)CvPADLIST (cv));
380 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
381 PUSHs ((SV *)cv); 551 PUSHs ((SV *)cv);
382 552
383 CvDEPTH (cv) = 0; 553 CvDEPTH (cv) = 0;
384 get_padlist (cv); 554 get_padlist (aTHX_ cv);
385 } 555 }
386 } 556 }
387 } 557 }
388 558
389 if (top_si->si_type == PERLSI_MAIN) 559 if (expect_true (top_si->si_type == PERLSI_MAIN))
390 break; 560 break;
391 561
392 top_si = top_si->si_prev; 562 top_si = top_si->si_prev;
393 ccstk = top_si->si_cxstack; 563 ccstk = top_si->si_cxstack;
394 cxix = top_si->si_cxix; 564 cxix = top_si->si_cxix;
395 } 565 }
396 566
397 PUTBACK; 567 PUTBACK;
398 } 568 }
399 569
400 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 570 /* allocate some space on the context stack for our purposes */
401 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 571 /* we manually unroll here, as usually 2 slots is enough */
402 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 572 if (SLOT_COUNT >= 1) CXINC;
403 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 {
576 int i;
577 for (i = 3; i < SLOT_COUNT; ++i)
578 CXINC;
579 }
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */
404 581
582 c->mainstack = PL_mainstack;
583
584 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586
587 slot->defav = GvAV (PL_defgv);
588 slot->defsv = DEFSV;
589 slot->errsv = ERRSV;
590 slot->irsgv = GvSV (irsgv);
591
405#define VAR(name,type)c->name = PL_ ## name; 592 #define VAR(name,type) slot->name = PL_ ## name;
406# include "state.h" 593 # include "state.h"
407#undef VAR 594 #undef VAR
595 }
408} 596}
409 597
410/* 598/*
411 * allocate various perl stacks. This is an exact copy 599 * allocate various perl stacks. This is almost an exact copy
412 * of perl.c:init_stacks, except that it uses less memory 600 * of perl.c:init_stacks, except that it uses less memory
413 * on the (sometimes correct) assumption that coroutines do 601 * on the (sometimes correct) assumption that coroutines do
414 * not usually need a lot of stackspace. 602 * not usually need a lot of stackspace.
415 */ 603 */
416#if PREFER_PERL_FUNCTIONS 604#if CORO_PREFER_PERL_FUNCTIONS
417# define coro_init_stacks init_stacks 605# define coro_init_stacks init_stacks
418#else 606#else
419static void 607static void
420coro_init_stacks () 608coro_init_stacks (pTHX)
421{ 609{
422 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 610 PL_curstackinfo = new_stackinfo(32, 8);
423 PL_curstackinfo->si_type = PERLSI_MAIN; 611 PL_curstackinfo->si_type = PERLSI_MAIN;
424 PL_curstack = PL_curstackinfo->si_stack; 612 PL_curstack = PL_curstackinfo->si_stack;
425 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426 614
427 PL_stack_base = AvARRAY(PL_curstack); 615 PL_stack_base = AvARRAY(PL_curstack);
428 PL_stack_sp = PL_stack_base; 616 PL_stack_sp = PL_stack_base;
429 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 617 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430 618
431 New(50,PL_tmps_stack,128,SV*); 619 New(50,PL_tmps_stack,32,SV*);
432 PL_tmps_floor = -1; 620 PL_tmps_floor = -1;
433 PL_tmps_ix = -1; 621 PL_tmps_ix = -1;
434 PL_tmps_max = 128; 622 PL_tmps_max = 32;
435 623
436 New(54,PL_markstack,32,I32); 624 New(54,PL_markstack,16,I32);
437 PL_markstack_ptr = PL_markstack; 625 PL_markstack_ptr = PL_markstack;
438 PL_markstack_max = PL_markstack + 32; 626 PL_markstack_max = PL_markstack + 16;
439 627
440#ifdef SET_MARK_OFFSET 628#ifdef SET_MARK_OFFSET
441 SET_MARK_OFFSET; 629 SET_MARK_OFFSET;
442#endif 630#endif
443 631
444 New(54,PL_scopestack,32,I32); 632 New(54,PL_scopestack,8,I32);
445 PL_scopestack_ix = 0; 633 PL_scopestack_ix = 0;
446 PL_scopestack_max = 32; 634 PL_scopestack_max = 8;
447 635
448 New(54,PL_savestack,64,ANY); 636 New(54,PL_savestack,24,ANY);
449 PL_savestack_ix = 0; 637 PL_savestack_ix = 0;
450 PL_savestack_max = 64; 638 PL_savestack_max = 24;
451 639
452#if !PERL_VERSION_ATLEAST (5,9,0) 640#if !PERL_VERSION_ATLEAST (5,10,0)
453 New(54,PL_retstack,16,OP*); 641 New(54,PL_retstack,4,OP*);
454 PL_retstack_ix = 0; 642 PL_retstack_ix = 0;
455 PL_retstack_max = 16; 643 PL_retstack_max = 4;
456#endif 644#endif
457} 645}
458#endif 646#endif
459 647
460/* 648/*
461 * destroy the stacks, the callchain etc... 649 * destroy the stacks, the callchain etc...
462 */ 650 */
463static void 651static void
464coro_destroy_stacks () 652coro_destruct_stacks (pTHX)
465{ 653{
466 if (!IN_DESTRUCT)
467 {
468 /* restore all saved variables and stuff */
469 LEAVE_SCOPE (0);
470 assert (PL_tmps_floor == -1);
471
472 /* free all temporaries */
473 FREETMPS;
474 assert (PL_tmps_ix == -1);
475
476 POPSTACK_TO (PL_mainstack);
477 }
478
479 while (PL_curstackinfo->si_next) 654 while (PL_curstackinfo->si_next)
480 PL_curstackinfo = PL_curstackinfo->si_next; 655 PL_curstackinfo = PL_curstackinfo->si_next;
481 656
482 while (PL_curstackinfo) 657 while (PL_curstackinfo)
483 { 658 {
… …
493 668
494 Safefree (PL_tmps_stack); 669 Safefree (PL_tmps_stack);
495 Safefree (PL_markstack); 670 Safefree (PL_markstack);
496 Safefree (PL_scopestack); 671 Safefree (PL_scopestack);
497 Safefree (PL_savestack); 672 Safefree (PL_savestack);
498#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
499 Safefree (PL_retstack); 674 Safefree (PL_retstack);
500#endif 675#endif
501} 676}
502 677
678static size_t
679coro_rss (pTHX_ struct coro *coro)
680{
681 size_t rss = sizeof (*coro);
682
683 if (coro->mainstack)
684 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING)
689 {
690 slot = &tmp_slot;
691
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR
695 }
696 else
697 slot = coro->slot;
698
699 if (slot)
700 {
701 rss += sizeof (slot->curstackinfo);
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 }
713 }
714
715 return rss;
716}
717
718/** coroutine stack handling ************************************************/
719
720static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
721static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
722static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
723
724/* apparently < 5.8.8 */
725#ifndef MgPV_nolen_const
726#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
727 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
728 (const char*)(mg)->mg_ptr)
729#endif
730
731/*
732 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide
735 * readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */
503static void 740static int
504setup_coro (struct coro *coro) 741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{
743 const char *s = MgPV_nolen_const (mg);
744
745 if (*s == '_')
746 {
747 SV **svp = 0;
748
749 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
750 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
751
752 if (svp)
753 {
754 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
755 return 0;
756 }
757 }
758
759 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
760}
761
762static int
763coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
764{
765 const char *s = MgPV_nolen_const (mg);
766
767 if (*s == '_')
768 {
769 SV **svp = 0;
770
771 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
772 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
773
774 if (svp)
775 {
776 SV *old = *svp;
777 *svp = 0;
778 SvREFCNT_dec (old);
779 return 0;
780 }
781 }
782
783 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
784}
785
786static int
787coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
788{
789 const char *s = MgPV_nolen_const (mg);
790
791 if (*s == '_')
792 {
793 SV **svp = 0;
794
795 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797
798 if (svp)
799 {
800 SV *old = *svp;
801 *svp = newSVsv (sv);
802 SvREFCNT_dec (old);
803 return 0;
804 }
805 }
806
807 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
808}
809
810static void
811prepare_nop (pTHX_ struct coro_transfer_args *ta)
812{
813 /* kind of mega-hacky, but works */
814 ta->next = ta->prev = (struct coro *)ta;
815}
816
817static int
818slf_check_nop (pTHX_ struct CoroSLF *frame)
819{
820 return 0;
821}
822
823static UNOP coro_setup_op;
824
825static void NOINLINE /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro)
505{ 827{
506 /* 828 /*
507 * emulate part of the perl startup here. 829 * emulate part of the perl startup here.
508 */ 830 */
509
510 coro_init_stacks (); 831 coro_init_stacks (aTHX);
511 832
833 PL_runops = RUNOPS_DEFAULT;
512 PL_curcop = &PL_compiling; 834 PL_curcop = &PL_compiling;
513 PL_in_eval = EVAL_NULL; 835 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0;
514 PL_curpm = 0; 837 PL_curpm = 0;
838 PL_curpad = 0;
515 PL_localizing = 0; 839 PL_localizing = 0;
516 PL_dirty = 0; 840 PL_dirty = 0;
517 PL_restartop = 0; 841 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0;
844#endif
845
846 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
849
850 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
854 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
518 856
519 { 857 {
520 dSP; 858 dSP;
521 LOGOP myop; 859 UNOP myop;
522 860
523 SvREFCNT_dec (GvAV (PL_defgv));
524 GvAV (PL_defgv) = coro->args; coro->args = 0;
525
526 Zero (&myop, 1, LOGOP); 861 Zero (&myop, 1, UNOP);
527 myop.op_next = Nullop; 862 myop.op_next = Nullop;
528 myop.op_flags = OPf_WANT_VOID; 863 myop.op_flags = OPf_WANT_VOID;
529 864
530 PUSHMARK (SP); 865 PUSHMARK (SP);
531 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
532 PUTBACK; 867 PUTBACK;
533 PL_op = (OP *)&myop; 868 PL_op = (OP *)&myop;
534 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535 SPAGAIN; 870 SPAGAIN;
536 } 871 }
537 872
538 ENTER; /* necessary e.g. for dounwind */ 873 /* this newly created coroutine might be run on an existing cctx which most
539} 874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
540 878
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM;
881 coro_setup_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op;
883
884 PL_op = (OP *)&coro_setup_op;
885
886 /* copy throw, in case it was set before coro_setup */
887 coro_throw = coro->throw;
888}
889
541static void 890static void
891coro_destruct (pTHX_ struct coro *coro)
892{
893 if (!IN_DESTRUCT)
894 {
895 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0);
897 assert (PL_tmps_floor == -1);
898
899 /* free all temporaries */
900 FREETMPS;
901 assert (PL_tmps_ix == -1);
902
903 /* unwind all extra stacks */
904 POPSTACK_TO (PL_mainstack);
905
906 /* unwind main stack */
907 dounwind (-1);
908 }
909
910 SvREFCNT_dec (GvSV (PL_defgv));
911 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919
920 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw);
922
923 coro_destruct_stacks (aTHX);
924}
925
926INLINE void
542free_coro_mortal () 927free_coro_mortal (pTHX)
543{ 928{
544 if (coro_mortal) 929 if (expect_true (coro_mortal))
545 { 930 {
546 SvREFCNT_dec (coro_mortal); 931 SvREFCNT_dec (coro_mortal);
547 coro_mortal = 0; 932 coro_mortal = 0;
548 } 933 }
549} 934}
550 935
551/* inject a fake call to Coro::State::_cctx_init into the execution */ 936static int
937runops_trace (pTHX)
938{
939 COP *oldcop = 0;
940 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 {
946 PERL_ASYNC_CHECK ();
947
948 if (cctx->flags & CC_TRACE_ALL)
949 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
951 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top;
954 AV *av = newAV (); /* return values */
955 SV **cb;
956 dSP;
957
958 GV *gv = CvGV (cx->blk_sub.cv);
959 SV *fullname = sv_2mortal (newSV (0));
960 if (isGV (gv))
961 gv_efullname3 (fullname, gv, 0);
962
963 bot = PL_stack_base + cx->blk_oldsp + 1;
964 top = cx->blk_gimme == G_ARRAY ? SP + 1
965 : cx->blk_gimme == G_SCALAR ? bot + 1
966 : bot;
967
968 av_extend (av, top - bot);
969 while (bot < top)
970 av_push (av, SvREFCNT_inc_NN (*bot++));
971
972 PL_runops = RUNOPS_DEFAULT;
973 ENTER;
974 SAVETMPS;
975 EXTEND (SP, 3);
976 PUSHMARK (SP);
977 PUSHs (&PL_sv_no);
978 PUSHs (fullname);
979 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
980 PUTBACK;
981 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
982 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
983 SPAGAIN;
984 FREETMPS;
985 LEAVE;
986 PL_runops = runops_trace;
987 }
988
989 if (oldcop != PL_curcop)
990 {
991 oldcop = PL_curcop;
992
993 if (PL_curcop != &PL_compiling)
994 {
995 SV **cb;
996
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
998 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0));
1007
1008 if (isGV (gv))
1009 gv_efullname3 (fullname, gv, 0);
1010
1011 PL_runops = RUNOPS_DEFAULT;
1012 ENTER;
1013 SAVETMPS;
1014 EXTEND (SP, 3);
1015 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN;
1023 FREETMPS;
1024 LEAVE;
1025 PL_runops = runops_trace;
1026 }
1027
1028 oldcxix = cxstack_ix;
1029 }
1030
1031 if (cctx->flags & CC_TRACE_LINE)
1032 {
1033 dSP;
1034
1035 PL_runops = RUNOPS_DEFAULT;
1036 ENTER;
1037 SAVETMPS;
1038 EXTEND (SP, 3);
1039 PL_runops = RUNOPS_DEFAULT;
1040 PUSHMARK (SP);
1041 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1042 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1043 PUTBACK;
1044 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1045 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1046 SPAGAIN;
1047 FREETMPS;
1048 LEAVE;
1049 PL_runops = runops_trace;
1050 }
1051 }
1052 }
1053 }
1054 }
1055
1056 TAINT_NOT;
1057 return 0;
1058}
1059
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame;
1062
1063static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0;
1068}
1069
1070static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{
1073 *frame = cctx_ssl_frame;
1074
1075 return 1; /* execute the restored frame - there must be one */
1076}
1077
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */
552static void NOINLINE 1079static void NOINLINE
553prepare_cctx (coro_cctx *cctx) 1080cctx_prepare (pTHX_ coro_cctx *cctx)
554{ 1081{
555 dSP;
556 LOGOP myop;
557
558 Zero (&myop, 1, LOGOP);
559 myop.op_next = PL_op;
560 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
561
562 PUSHMARK (SP);
563 EXTEND (SP, 2);
564 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
565 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
566 PUTBACK;
567 PL_op = (OP *)&myop;
568 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569 SPAGAIN;
570}
571
572static void
573coro_run (void *arg)
574{
575 /* coro_run is the alternative tail of transfer(), so unlock here. */
576 UNLOCK;
577
578 /*
579 * this is a _very_ stripped down perl interpreter ;)
580 */
581 PL_top_env = &PL_start_env; 1082 PL_top_env = &PL_start_env;
582 1083
1084 if (cctx->flags & CC_TRACE)
1085 PL_runops = runops_trace;
1086
1087 /* we already must be in an SLF call, there is no other valid way
1088 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091
1092 cctx_ssl_cctx = cctx;
1093 cctx_ssl_frame = slf_frame;
1094
1095 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel;
1097}
1098
1099/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void
1101transfer_tail (pTHX)
1102{
1103 free_coro_mortal (aTHX);
1104}
1105
1106/*
1107 * this is a _very_ stripped down perl interpreter ;)
1108 */
1109static void
1110cctx_run (void *arg)
1111{
1112#ifdef USE_ITHREADS
1113# if CORO_PTHREAD
1114 PERL_SET_CONTEXT (coro_thx);
1115# endif
1116#endif
1117 {
1118 dTHX;
1119
1120 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */
1123
583 /* inject call to cctx_init */ 1124 /* inject a fake subroutine call to cctx_init */
584 prepare_cctx ((coro_cctx *)arg); 1125 cctx_prepare (aTHX_ (coro_cctx *)arg);
585 1126
1127 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX);
1129
586 /* somebody will hit me for both perl_run and PL_restartop */ 1130 /* somebody or something will hit me for both perl_run and PL_restartop */
587 PL_restartop = PL_op; 1131 PL_restartop = PL_op;
588 perl_run (PL_curinterp); 1132 perl_run (PL_curinterp);
589 1133
590 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1134 /*
591 abort (); 1135 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the
1138 * bootstrap-time "top" top_env, as we cannot restore the "main"
1139 * coroutine as Coro has no such concept
1140 */
1141 PL_top_env = main_top_env;
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 }
592} 1144}
593 1145
594static coro_cctx * 1146static coro_cctx *
595cctx_new () 1147cctx_new ()
596{ 1148{
597 coro_cctx *cctx; 1149 coro_cctx *cctx;
598 1150
599 ++cctx_count; 1151 ++cctx_count;
600
601 Newz (0, cctx, 1, coro_cctx); 1152 New (0, cctx, 1, coro_cctx);
1153
1154 cctx->gen = cctx_gen;
1155 cctx->flags = 0;
1156 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx only suitable as source */
1162static coro_cctx *
1163cctx_new_empty ()
1164{
1165 coro_cctx *cctx = cctx_new ();
1166
1167 cctx->sptr = 0;
1168 coro_create (&cctx->cctx, 0, 0, 0, 0);
1169
1170 return cctx;
1171}
1172
1173/* create a new cctx suitable as destination/running a perl interpreter */
1174static coro_cctx *
1175cctx_new_run ()
1176{
1177 coro_cctx *cctx = cctx_new ();
1178 void *stack_start;
1179 size_t stack_size;
602 1180
603#if HAVE_MMAP 1181#if HAVE_MMAP
604
605 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1182 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606 /* mmap supposedly does allocate-on-write for us */ 1183 /* mmap supposedly does allocate-on-write for us */
607 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1184 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
608 1185
609 if (cctx->sptr == (void *)-1) 1186 if (cctx->sptr != (void *)-1)
1187 {
1188 #if CORO_STACKGUARD
1189 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1190 #endif
1191 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1192 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1193 cctx->flags |= CC_MAPPED;
610 { 1194 }
1195 else
1196#endif
1197 {
1198 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1199 New (0, cctx->sptr, cctx_stacksize, long);
1200
1201 if (!cctx->sptr)
1202 {
611 perror ("FATAL: unable to mmap stack for coroutine"); 1203 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
612 _exit (EXIT_FAILURE); 1204 _exit (EXIT_FAILURE);
613 } 1205 }
614 1206
615# if STACKGUARD 1207 stack_start = cctx->sptr;
616 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1208 stack_size = cctx->ssize;
617# endif
618
619#else
620
621 cctx->ssize = STACKSIZE * (long)sizeof (long);
622 New (0, cctx->sptr, STACKSIZE, long);
623
624 if (!cctx->sptr)
625 { 1209 }
626 perror ("FATAL: unable to malloc stack for coroutine");
627 _exit (EXIT_FAILURE);
628 }
629 1210
1211 #if CORO_USE_VALGRIND
1212 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
630#endif 1213 #endif
631 1214
632#if USE_VALGRIND 1215 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
633 cctx->valgrind_id = VALGRIND_STACK_REGISTER (
634 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
635 cctx->ssize + (char *)cctx->sptr
636 );
637#endif
638
639 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
640 1216
641 return cctx; 1217 return cctx;
642} 1218}
643 1219
644static void 1220static void
… …
646{ 1222{
647 if (!cctx) 1223 if (!cctx)
648 return; 1224 return;
649 1225
650 --cctx_count; 1226 --cctx_count;
1227 coro_destroy (&cctx->cctx);
651 1228
652#if USE_VALGRIND 1229 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr)
1231 {
1232 #if CORO_USE_VALGRIND
653 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1233 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654#endif 1234 #endif
655 1235
656#if HAVE_MMAP 1236#if HAVE_MMAP
1237 if (cctx->flags & CC_MAPPED)
657 munmap (cctx->sptr, cctx->ssize); 1238 munmap (cctx->sptr, cctx->ssize);
658#else 1239 else
1240#endif
659 Safefree (cctx->sptr); 1241 Safefree (cctx->sptr);
660#endif 1242 }
661 1243
662 Safefree (cctx); 1244 Safefree (cctx);
663} 1245}
664 1246
1247/* wether this cctx should be destructed */
1248#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1249
665static coro_cctx * 1250static coro_cctx *
666cctx_get () 1251cctx_get (pTHX)
667{ 1252{
668 coro_cctx *cctx; 1253 while (expect_true (cctx_first))
669
670 if (cctx_first)
671 { 1254 {
672 cctx = cctx_first; 1255 coro_cctx *cctx = cctx_first;
673 cctx_first = cctx->next; 1256 cctx_first = cctx->next;
674 --cctx_idle; 1257 --cctx_idle;
675 } 1258
676 else 1259 if (expect_true (!CCTX_EXPIRED (cctx)))
677 { 1260 return cctx;
678 cctx = cctx_new (); 1261
679 PL_op = PL_op->op_next; 1262 cctx_destroy (cctx);
680 } 1263 }
681 1264
682 return cctx; 1265 return cctx_new_run ();
683} 1266}
684 1267
685static void 1268static void
686cctx_put (coro_cctx *cctx) 1269cctx_put (coro_cctx *cctx)
687{ 1270{
1271 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1272
688 /* free another cctx if overlimit */ 1273 /* free another cctx if overlimit */
689 if (cctx_idle >= MAX_IDLE_CCTX) 1274 if (expect_false (cctx_idle >= cctx_max_idle))
690 { 1275 {
691 coro_cctx *first = cctx_first; 1276 coro_cctx *first = cctx_first;
692 cctx_first = first->next; 1277 cctx_first = first->next;
693 --cctx_idle; 1278 --cctx_idle;
694 1279
695 assert (!first->inuse);
696 cctx_destroy (first); 1280 cctx_destroy (first);
697 } 1281 }
698 1282
699 ++cctx_idle; 1283 ++cctx_idle;
700 cctx->next = cctx_first; 1284 cctx->next = cctx_first;
701 cctx_first = cctx; 1285 cctx_first = cctx;
702} 1286}
703 1287
704/* never call directly, always through the coro_state_transfer global variable */ 1288/** coroutine switching *****************************************************/
705static void NOINLINE 1289
1290static void
706transfer (struct coro *prev, struct coro *next) 1291transfer_check (pTHX_ struct coro *prev, struct coro *next)
1292{
1293 /* TODO: throwing up here is considered harmful */
1294
1295 if (expect_true (prev != next))
1296 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1299
1300 if (expect_false (next->flags & CF_RUNNING))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1305
1306#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif
1310 }
1311}
1312
1313/* always use the TRANSFER macro */
1314static void NOINLINE /* noinline so we have a fixed stackframe */
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
707{ 1316{
708 dSTACKLEVEL; 1317 dSTACKLEVEL;
709 1318
710 /* sometimes transfer is only called to set idle_sp */ 1319 /* sometimes transfer is only called to set idle_sp */
711 if (!next) 1320 if (expect_false (!next))
712 { 1321 {
713 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
714 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
715 } 1324 }
716 else if (prev != next) 1325 else if (expect_true (prev != next))
717 { 1326 {
718 coro_cctx *prev__cctx; 1327 coro_cctx *prev__cctx;
719 1328
720 if (prev->flags & CF_NEW) 1329 if (expect_false (prev->flags & CF_NEW))
721 { 1330 {
722 /* create a new empty context */ 1331 /* create a new empty/source context */
723 Newz (0, prev->cctx, 1, coro_cctx); 1332 prev->cctx = cctx_new_empty ();
724 prev->cctx->inuse = 1;
725 prev->flags &= ~CF_NEW; 1333 prev->flags &= ~CF_NEW;
726 prev->flags |= CF_RUNNING; 1334 prev->flags |= CF_RUNNING;
727 } 1335 }
728 1336
729 /*TODO: must not croak here */
730 if (!prev->flags & CF_RUNNING)
731 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732
733 if (next->flags & CF_RUNNING)
734 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
735
736 prev->flags &= ~CF_RUNNING; 1337 prev->flags &= ~CF_RUNNING;
737 next->flags |= CF_RUNNING; 1338 next->flags |= CF_RUNNING;
738 1339
739 LOCK; 1340 /* first get rid of the old state */
1341 save_perl (aTHX_ prev);
740 1342
741 if (next->flags & CF_NEW) 1343 if (expect_false (next->flags & CF_NEW))
742 { 1344 {
743 /* need to start coroutine */ 1345 /* need to start coroutine */
744 next->flags &= ~CF_NEW; 1346 next->flags &= ~CF_NEW;
745 /* first get rid of the old state */
746 save_perl (prev);
747 /* setup coroutine call */ 1347 /* setup coroutine call */
748 setup_coro (next); 1348 coro_setup (aTHX_ next);
749 /* need a new stack */
750 assert (!next->cctx);
751 } 1349 }
752 else 1350 else
1351 load_perl (aTHX_ next);
1352
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */
1356 if (expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel
1358 && !(prev__cctx->flags & CC_TRACE)
1359 && !force_cctx
1360 ))
753 { 1361 {
754 /* coroutine already started */ 1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
755 save_perl (prev); 1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
756 load_perl (next); 1364
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1370 if (!next->cctx)
1371 next->cctx = cctx_get (aTHX);
1372
1373 cctx_put (prev__cctx);
757 } 1374 }
758 1375
759 prev__cctx = prev->cctx; 1376 ++next->usecount;
760 1377
761 /* possibly "free" the cctx */
762 if (prev__cctx->idle_sp == STACKLEVEL)
763 {
764 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
765 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
766
767 prev->cctx = 0;
768
769 cctx_put (prev__cctx);
770 prev__cctx->inuse = 0;
771 }
772
773 if (!next->cctx) 1378 if (expect_true (!next->cctx))
774 {
775 next->cctx = cctx_get (); 1379 next->cctx = cctx_get (aTHX);
776 assert (!next->cctx->inuse);
777 next->cctx->inuse = 1;
778 }
779 1380
780 if (prev__cctx != next->cctx) 1381 if (expect_false (prev__cctx != next->cctx))
781 { 1382 {
782 prev__cctx->top_env = PL_top_env; 1383 prev__cctx->top_env = PL_top_env;
783 PL_top_env = next->cctx->top_env; 1384 PL_top_env = next->cctx->top_env;
784 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785 } 1386 }
786 1387
787 free_coro_mortal (); 1388 transfer_tail (aTHX);
788
789 UNLOCK;
790 } 1389 }
791} 1390}
792 1391
793struct transfer_args 1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
794{
795 struct coro *prev, *next;
796};
797
798#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
799 1394
1395/** high level stuff ********************************************************/
1396
800static void 1397static int
801coro_state_destroy (struct coro *coro) 1398coro_state_destroy (pTHX_ struct coro *coro)
802{ 1399{
803 if (coro->refcnt--) 1400 if (coro->flags & CF_DESTROYED)
804 return; 1401 return 0;
1402
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro);
1405
1406 coro->flags |= CF_DESTROYED;
1407
1408 if (coro->flags & CF_READY)
1409 {
1410 /* reduce nready, as destroying a ready coro effectively unreadies it */
1411 /* alternative: look through all ready queues and remove the coro */
1412 --coro_nready;
1413 }
1414 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
805 1416
806 if (coro->mainstack && coro->mainstack != main_mainstack) 1417 if (coro->mainstack && coro->mainstack != main_mainstack)
807 { 1418 {
808 struct coro temp; 1419 struct coro temp;
809 Zero (&temp, 1, struct coro);
810 temp.save = CORO_SAVE_ALL;
811 1420
812 if (coro->flags & CF_RUNNING) 1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
813 croak ("FATAL: tried to destroy currently running coroutine");
814 1422
815 save_perl (&temp); 1423 save_perl (aTHX_ &temp);
816 load_perl (coro); 1424 load_perl (aTHX_ coro);
817 1425
818 coro_destroy_stacks (); 1426 coro_destruct (aTHX_ coro);
819 1427
820 load_perl (&temp); /* this will get rid of defsv etc.. */ 1428 load_perl (aTHX_ &temp);
821 1429
822 coro->mainstack = 0; 1430 coro->slot = 0;
823 } 1431 }
824 1432
825 cctx_destroy (coro->cctx); 1433 cctx_destroy (coro->cctx);
826 SvREFCNT_dec (coro->args); 1434 SvREFCNT_dec (coro->args);
827 Safefree (coro); 1435
1436 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next;
1439
1440 return 1;
828} 1441}
829 1442
830static int 1443static int
831coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1444coro_state_free (pTHX_ SV *sv, MAGIC *mg)
832{ 1445{
833 struct coro *coro = (struct coro *)mg->mg_ptr; 1446 struct coro *coro = (struct coro *)mg->mg_ptr;
834 mg->mg_ptr = 0; 1447 mg->mg_ptr = 0;
835 1448
1449 coro->hv = 0;
1450
1451 if (--coro->refcnt < 0)
1452 {
836 coro_state_destroy (coro); 1453 coro_state_destroy (aTHX_ coro);
1454 Safefree (coro);
1455 }
837 1456
838 return 0; 1457 return 0;
839} 1458}
840 1459
841static int 1460static int
… …
848 return 0; 1467 return 0;
849} 1468}
850 1469
851static MGVTBL coro_state_vtbl = { 1470static MGVTBL coro_state_vtbl = {
852 0, 0, 0, 0, 1471 0, 0, 0, 0,
853 coro_state_clear, 1472 coro_state_free,
854 0, 1473 0,
855#ifdef MGf_DUP 1474#ifdef MGf_DUP
856 coro_state_dup, 1475 coro_state_dup,
857#else 1476#else
858# define MGf_DUP 0 1477# define MGf_DUP 0
859#endif 1478#endif
860}; 1479};
861 1480
862static struct coro *
863SvSTATE (SV *coro)
864{
865 HV *stash;
866 MAGIC *mg;
867
868 if (SvROK (coro))
869 coro = SvRV (coro);
870
871 stash = SvSTASH (coro);
872 if (stash != coro_stash && stash != coro_state_stash)
873 {
874 /* very slow, but rare, check */
875 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
876 croak ("Coro::State object required");
877 }
878
879 mg = SvMAGIC (coro);
880 assert (mg->mg_type == PERL_MAGIC_ext);
881 return (struct coro *)mg->mg_ptr;
882}
883
884static void 1481static void
885prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1482prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
886{ 1483{
887 ta->prev = SvSTATE (prev_sv); 1484 ta->prev = SvSTATE (prev_sv);
888 ta->next = SvSTATE (next_sv); 1485 ta->next = SvSTATE (next_sv);
1486 TRANSFER_CHECK (*ta);
889} 1487}
890 1488
891static void 1489static void
892api_transfer (SV *prev_sv, SV *next_sv) 1490api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
893{ 1491{
894 struct transfer_args ta; 1492 struct coro_transfer_args ta;
895 1493
896 prepare_transfer (&ta, prev_sv, next_sv); 1494 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897 TRANSFER (ta); 1495 TRANSFER (ta, 1);
1496}
1497
1498/** Coro ********************************************************************/
1499
1500INLINE void
1501coro_enq (pTHX_ struct coro *coro)
1502{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1504}
1505
1506INLINE SV *
1507coro_deq (pTHX)
1508{
1509 int prio;
1510
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0)
1513 return av_shift (coro_ready [prio]);
1514
1515 return 0;
898} 1516}
899 1517
900static int 1518static int
901api_save (SV *coro_sv, int new_save)
902{
903 struct coro *coro = SvSTATE (coro_sv);
904 int old_save = coro->save;
905
906 if (new_save >= 0)
907 coro->save = new_save;
908
909 return old_save;
910}
911
912/** Coro ********************************************************************/
913
914#define PRIO_MAX 3
915#define PRIO_HIGH 1
916#define PRIO_NORMAL 0
917#define PRIO_LOW -1
918#define PRIO_IDLE -3
919#define PRIO_MIN -4
920
921/* for Coro.pm */
922static SV *coro_current;
923static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924static int coro_nready;
925
926static void
927coro_enq (SV *coro_sv)
928{
929 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930 coro_nready++;
931}
932
933static SV *
934coro_deq (int min_prio)
935{
936 int prio = PRIO_MAX - PRIO_MIN;
937
938 min_prio -= PRIO_MIN;
939 if (min_prio < 0)
940 min_prio = 0;
941
942 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943 if (AvFILLp (coro_ready [prio]) >= 0)
944 {
945 coro_nready--;
946 return av_shift (coro_ready [prio]);
947 }
948
949 return 0;
950}
951
952static int
953api_ready (SV *coro_sv) 1519api_ready (pTHX_ SV *coro_sv)
954{ 1520{
955 struct coro *coro; 1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
956 1524
957 if (SvROK (coro_sv)) 1525 if (SvROK (coro_sv))
958 coro_sv = SvRV (coro_sv); 1526 coro_sv = SvRV (coro_sv);
959 1527
960 coro = SvSTATE (coro_sv); 1528 coro = SvSTATE (coro_sv);
… …
962 if (coro->flags & CF_READY) 1530 if (coro->flags & CF_READY)
963 return 0; 1531 return 0;
964 1532
965 coro->flags |= CF_READY; 1533 coro->flags |= CF_READY;
966 1534
967 LOCK; 1535 sv_hook = coro_nready ? 0 : coro_readyhook;
968 coro_enq (SvREFCNT_inc (coro_sv)); 1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
969 UNLOCK; 1537
1538 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540
1541 if (sv_hook)
1542 {
1543 dSP;
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
970 1558
971 return 1; 1559 return 1;
972} 1560}
973 1561
974static int 1562static int
975api_is_ready (SV *coro_sv) 1563api_is_ready (pTHX_ SV *coro_sv)
976{ 1564{
977 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1565 return !!(SvSTATE (coro_sv)->flags & CF_READY);
978} 1566}
979 1567
980static void 1568INLINE void
981prepare_schedule (struct transfer_args *ta) 1569prepare_schedule (pTHX_ struct coro_transfer_args *ta)
982{ 1570{
983 SV *prev, *next; 1571 SV *prev_sv, *next_sv;
984 1572
985 for (;;) 1573 for (;;)
986 { 1574 {
987 LOCK;
988 next = coro_deq (PRIO_MIN); 1575 next_sv = coro_deq (aTHX);
989 UNLOCK;
990 1576
991 if (next) 1577 /* nothing to schedule: call the idle handler */
992 break; 1578 if (expect_false (!next_sv))
993
994 { 1579 {
995 dSP; 1580 dSP;
996 1581
997 ENTER; 1582 ENTER;
998 SAVETMPS; 1583 SAVETMPS;
999 1584
1000 PUSHMARK (SP); 1585 PUSHMARK (SP);
1001 PUTBACK; 1586 PUTBACK;
1002 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1003 1588
1004 FREETMPS; 1589 FREETMPS;
1005 LEAVE; 1590 LEAVE;
1591 continue;
1006 } 1592 }
1007 }
1008 1593
1009 prev = SvRV (coro_current); 1594 ta->next = SvSTATE_hv (next_sv);
1010 SvRV_set (coro_current, next); 1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1011 1607
1012 /* free this only after the transfer */ 1608 /* free this only after the transfer */
1013 LOCK; 1609 prev_sv = SvRV (coro_current);
1014 free_coro_mortal ();
1015 UNLOCK;
1016 coro_mortal = prev;
1017
1018 assert (!SvROK(prev));//D
1019 assert (!SvROK(next));//D
1020
1021 ta->prev = SvSTATE (prev); 1610 ta->prev = SvSTATE_hv (prev_sv);
1022 ta->next = SvSTATE (next); 1611 TRANSFER_CHECK (*ta);
1023 1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1024 assert (ta->next->flags & CF_READY);
1025 ta->next->flags &= ~CF_READY; 1613 ta->next->flags &= ~CF_READY;
1026} 1614 SvRV_set (coro_current, next_sv);
1027 1615
1028static void 1616 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv;
1618}
1619
1620INLINE void
1029prepare_cede (struct transfer_args *ta) 1621prepare_cede (pTHX_ struct coro_transfer_args *ta)
1030{ 1622{
1031 api_ready (coro_current); 1623 api_ready (aTHX_ coro_current);
1032 prepare_schedule (ta); 1624 prepare_schedule (aTHX_ ta);
1625}
1626
1627INLINE void
1628prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1629{
1630 SV *prev = SvRV (coro_current);
1631
1632 if (coro_nready)
1633 {
1634 prepare_schedule (aTHX_ ta);
1635 api_ready (aTHX_ prev);
1636 }
1637 else
1638 prepare_nop (aTHX_ ta);
1639}
1640
1641static void
1642api_schedule (pTHX)
1643{
1644 struct coro_transfer_args ta;
1645
1646 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1);
1033} 1648}
1034 1649
1035static int 1650static int
1036prepare_cede_notself (struct transfer_args *ta) 1651api_cede (pTHX)
1037{ 1652{
1038 if (coro_nready) 1653 struct coro_transfer_args ta;
1654
1655 prepare_cede (aTHX_ &ta);
1656
1657 if (expect_true (ta.prev != ta.next))
1039 { 1658 {
1040 SV *prev = SvRV (coro_current); 1659 TRANSFER (ta, 1);
1041 prepare_schedule (ta);
1042 api_ready (prev);
1043 return 1; 1660 return 1;
1044 } 1661 }
1045 else 1662 else
1046 return 0; 1663 return 0;
1047} 1664}
1048 1665
1049static void
1050api_schedule (void)
1051{
1052 struct transfer_args ta;
1053
1054 prepare_schedule (&ta);
1055 TRANSFER (ta);
1056}
1057
1058static int 1666static int
1059api_cede (void) 1667api_cede_notself (pTHX)
1060{ 1668{
1669 if (coro_nready)
1670 {
1061 struct transfer_args ta; 1671 struct coro_transfer_args ta;
1062 1672
1063 prepare_cede (&ta); 1673 prepare_cede_notself (aTHX_ &ta);
1064
1065 if (ta.prev != ta.next)
1066 {
1067 TRANSFER (ta); 1674 TRANSFER (ta, 1);
1068 return 1; 1675 return 1;
1069 } 1676 }
1070 else 1677 else
1071 return 0; 1678 return 0;
1072} 1679}
1073 1680
1681static void
1682api_trace (pTHX_ SV *coro_sv, int flags)
1683{
1684 struct coro *coro = SvSTATE (coro_sv);
1685
1686 if (flags & CC_TRACE)
1687 {
1688 if (!coro->cctx)
1689 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,");
1692
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 {
1697 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1698
1699 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT;
1701 else
1702 coro->slot->runops = RUNOPS_DEFAULT;
1703 }
1704}
1705
1706/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */
1708
1709static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1710static const CV *slf_cv;
1711static SV **slf_argv;
1712static int slf_argc, slf_arga; /* count, allocated */
1713static I32 slf_ax; /* top of stack, for restore */
1714
1715/* this restores the stack in the case we patched the entersub, to */
1716/* recreate the stack frame as perl will on following calls */
1717/* since entersub cleared the stack */
1718static OP *
1719pp_restore (pTHX)
1720{
1721 int i;
1722 SV **SP = PL_stack_base + slf_ax;
1723
1724 PUSHMARK (SP);
1725
1726 EXTEND (SP, slf_argc + 1);
1727
1728 for (i = 0; i < slf_argc; ++i)
1729 PUSHs (sv_2mortal (slf_argv [i]));
1730
1731 PUSHs ((SV *)CvGV (slf_cv));
1732
1733 RETURNOP (slf_restore.op_first);
1734}
1735
1736static void
1737slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1738{
1739 SV **arg = (SV **)slf_frame.data;
1740
1741 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1742}
1743
1744static void
1745slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1746{
1747 if (items != 2)
1748 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1749
1750 frame->prepare = slf_prepare_transfer;
1751 frame->check = slf_check_nop;
1752 frame->data = (void *)arg; /* let's hope it will stay valid */
1753}
1754
1755static void
1756slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757{
1758 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop;
1760}
1761
1762static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{
1765 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop;
1767}
1768
1769static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{
1772 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop;
1774}
1775
1776/*
1777 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same
1779 * stack offset
1780 * SLF stands for "schedule-like-function".
1781 */
1782static OP *
1783pp_slf (pTHX)
1784{
1785 I32 checkmark; /* mark SP to see how many elements check has pushed */
1786
1787 /* set up the slf frame, unless it has already been set-up */
1788 /* the latter happens when a new coro has been started */
1789 /* or when a new cctx was attached to an existing coroutine */
1790 if (expect_true (!slf_frame.prepare))
1791 {
1792 /* first iteration */
1793 dSP;
1794 SV **arg = PL_stack_base + TOPMARK + 1;
1795 int items = SP - arg; /* args without function object */
1796 SV *gv = *sp;
1797
1798 /* do a quick consistency check on the "function" object, and if it isn't */
1799 /* for us, divert to the real entersub */
1800 if (SvTYPE (gv) != SVt_PVGV
1801 || !GvCV (gv)
1802 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1803 return PL_ppaddr[OP_ENTERSUB](aTHX);
1804
1805 if (!(PL_op->op_flags & OPf_STACKED))
1806 {
1807 /* ampersand-form of call, use @_ instead of stack */
1808 AV *av = GvAV (PL_defgv);
1809 arg = AvARRAY (av);
1810 items = AvFILLp (av) + 1;
1811 }
1812
1813 /* now call the init function, which needs to set up slf_frame */
1814 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1815 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1816
1817 /* pop args */
1818 SP = PL_stack_base + POPMARK;
1819
1820 PUTBACK;
1821 }
1822
1823 /* now that we have a slf_frame, interpret it! */
1824 /* we use a callback system not to make the code needlessly */
1825 /* complicated, but so we can run multiple perl coros from one cctx */
1826
1827 do
1828 {
1829 struct coro_transfer_args ta;
1830
1831 slf_frame.prepare (aTHX_ &ta);
1832 TRANSFER (ta, 0);
1833
1834 checkmark = PL_stack_sp - PL_stack_base;
1835 }
1836 while (slf_frame.check (aTHX_ &slf_frame));
1837
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839
1840 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR)
1843 {
1844 dSP;
1845 SV **bot = PL_stack_base + checkmark;
1846
1847 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */
1850 bot [1] = *sp;
1851
1852 SP = bot + 1;
1853
1854 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 }
1866
1867 return NORMAL;
1868}
1869
1870static void
1871api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1872{
1873 int i;
1874 SV **arg = PL_stack_base + ax;
1875 int items = PL_stack_sp - arg + 1;
1876
1877 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1878
1879 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1880 && PL_op->op_ppaddr != pp_slf)
1881 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1882
1883 CvFLAGS (cv) |= CVf_SLF;
1884 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1885 slf_cv = cv;
1886
1887 /* we patch the op, and then re-run the whole call */
1888 /* we have to put the same argument on the stack for this to work */
1889 /* and this will be done by pp_restore */
1890 slf_restore.op_next = (OP *)&slf_restore;
1891 slf_restore.op_type = OP_CUSTOM;
1892 slf_restore.op_ppaddr = pp_restore;
1893 slf_restore.op_first = PL_op;
1894
1895 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1896
1897 if (PL_op->op_flags & OPf_STACKED)
1898 {
1899 if (items > slf_arga)
1900 {
1901 slf_arga = items;
1902 free (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *));
1904 }
1905
1906 slf_argc = items;
1907
1908 for (i = 0; i < items; ++i)
1909 slf_argv [i] = SvREFCNT_inc (arg [i]);
1910 }
1911 else
1912 slf_argc = 0;
1913
1914 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1916
1917 PL_op = (OP *)&slf_restore;
1918}
1919
1920/*****************************************************************************/
1921/* PerlIO::cede */
1922
1923typedef struct
1924{
1925 PerlIOBuf base;
1926 NV next, every;
1927} PerlIOCede;
1928
1929static IV
1930PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1931{
1932 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1933
1934 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1935 self->next = nvtime () + self->every;
1936
1937 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1938}
1939
1940static SV *
1941PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1942{
1943 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1944
1945 return newSVnv (self->every);
1946}
1947
1948static IV
1949PerlIOCede_flush (pTHX_ PerlIO *f)
1950{
1951 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1952 double now = nvtime ();
1953
1954 if (now >= self->next)
1955 {
1956 api_cede (aTHX);
1957 self->next = now + self->every;
1958 }
1959
1960 return PerlIOBuf_flush (aTHX_ f);
1961}
1962
1963static PerlIO_funcs PerlIO_cede =
1964{
1965 sizeof(PerlIO_funcs),
1966 "cede",
1967 sizeof(PerlIOCede),
1968 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1969 PerlIOCede_pushed,
1970 PerlIOBuf_popped,
1971 PerlIOBuf_open,
1972 PerlIOBase_binmode,
1973 PerlIOCede_getarg,
1974 PerlIOBase_fileno,
1975 PerlIOBuf_dup,
1976 PerlIOBuf_read,
1977 PerlIOBuf_unread,
1978 PerlIOBuf_write,
1979 PerlIOBuf_seek,
1980 PerlIOBuf_tell,
1981 PerlIOBuf_close,
1982 PerlIOCede_flush,
1983 PerlIOBuf_fill,
1984 PerlIOBase_eof,
1985 PerlIOBase_error,
1986 PerlIOBase_clearerr,
1987 PerlIOBase_setlinebuf,
1988 PerlIOBuf_get_base,
1989 PerlIOBuf_bufsiz,
1990 PerlIOBuf_get_ptr,
1991 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt,
1993};
1994
1995/*****************************************************************************/
1996/* Coro::Semaphore */
1997
1998static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{
2001 SV *count_sv = AvARRAY (av)[0];
2002 IV count = SvIVX (count_sv);
2003
2004 count += adjust;
2005 SvIVX (count_sv) = count;
2006
2007 /* now wake up as many waiters as are expected to lock */
2008 while (count > 0 && AvFILLp (av) > 0)
2009 {
2010 SV *cb;
2011
2012 /* swap first two elements so we can shift a waiter */
2013 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av);
2016
2017 if (SvOBJECT (cb))
2018 api_ready (aTHX_ cb);
2019 else
2020 croak ("callbacks not yet supported");
2021
2022 SvREFCNT_dec (cb);
2023
2024 --count;
2025 }
2026}
2027
2028static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2030{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2033}
2034
1074static int 2035static int
1075api_cede_notself (void) 2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1076{ 2037{
1077 struct transfer_args ta; 2038 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0];
1078 2040
1079 if (prepare_cede_notself (&ta)) 2041 if (SvIVX (count_sv) > 0)
2042 {
2043 SvSTATE_current->on_destroy = 0;
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2045 return 0;
1080 { 2046 }
1081 TRANSFER (ta); 2047 else
2048 {
2049 int i;
2050 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */
2053
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current))
2056 return 1;
2057
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1082 return 1; 2059 return 1;
1083 } 2060 }
2061}
2062
2063static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{
2066 AV *av = (AV *)SvRV (arg [0]);
2067
2068 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 {
2070 frame->data = (void *)av;
2071 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 }
1084 else 2074 else
2075 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2085 }
2086
2087 frame->check = slf_check_semaphore_down;
2088
2089}
2090
2091/*****************************************************************************/
2092/* gensub: simple closure generation utility */
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{
2102 CV *cv = (CV *)newSV (0);
2103
2104 sv_upgrade ((SV *)cv, SVt_PVCV);
2105
2106 CvANON_on (cv);
2107 CvISXSUB_on (cv);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110
2111 return newRV_noinc ((SV *)cv);
2112}
2113
2114/*****************************************************************************/
2115/* Coro::AIO */
2116
2117#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2118
2119/* helper storage struct */
2120struct io_state
2121{
2122 int errorno;
2123 I32 laststype; /* U16 in 5.10.0 */
2124 int laststatval;
2125 Stat_t statcache;
2126};
2127
2128static void
2129coro_aio_callback (pTHX_ CV *cv)
2130{
2131 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG;
2133 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state));
2135
2136 av_extend (state, items);
2137
2138 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv);
2141
2142 {
2143 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2144
2145 data->errorno = errno;
2146 data->laststype = PL_laststype;
2147 data->laststatval = PL_laststatval;
2148 data->statcache = PL_statcache;
2149 }
2150
2151 /* now build the result vector out of all the parameters and the data_sv */
2152 {
2153 int i;
2154
2155 for (i = 0; i < items; ++i)
2156 av_push (state, SvREFCNT_inc_NN (ST (i)));
2157 }
2158
2159 av_push (state, data_sv);
2160
2161 api_ready (aTHX_ coro);
2162 SvREFCNT_dec (coro);
2163 SvREFCNT_dec ((AV *)state);
2164}
2165
2166static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{
2169 AV *state = (AV *)frame->data;
2170
2171 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
1085 return 0; 2173 return 1;
1086}
1087 2174
2175 /* restore status */
2176 {
2177 SV *data_sv = av_pop (state);
2178 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2179
2180 errno = data->errorno;
2181 PL_laststype = data->laststype;
2182 PL_laststatval = data->laststatval;
2183 PL_statcache = data->statcache;
2184
2185 SvREFCNT_dec (data_sv);
2186 }
2187
2188 /* push result values */
2189 {
2190 dSP;
2191 int i;
2192
2193 EXTEND (SP, AvFILLp (state) + 1);
2194 for (i = 0; i <= AvFILLp (state); ++i)
2195 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2196
2197 PUTBACK;
2198 }
2199
2200 return 0;
2201}
2202
2203static void
2204slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2205{
2206 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2207 SV *coro_hv = SvRV (coro_current);
2208 struct coro *coro = SvSTATE_hv (coro_hv);
2209
2210 /* put our coroutine id on the state arg */
2211 av_push (state, SvREFCNT_inc_NN (coro_hv));
2212
2213 /* first see whether we have a non-zero priority and set it as AIO prio */
2214 if (coro->prio)
2215 {
2216 dSP;
2217
2218 static SV *prio_cv;
2219 static SV *prio_sv;
2220
2221 if (expect_false (!prio_cv))
2222 {
2223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2224 prio_sv = newSViv (0);
2225 }
2226
2227 PUSHMARK (SP);
2228 sv_setiv (prio_sv, coro->prio);
2229 XPUSHs (prio_sv);
2230
2231 PUTBACK;
2232 call_sv (prio_cv, G_VOID | G_DISCARD);
2233 }
2234
2235 /* now call the original request */
2236 {
2237 dSP;
2238 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2239 int i;
2240
2241 PUSHMARK (SP);
2242
2243 /* first push all args to the stack */
2244 EXTEND (SP, items + 1);
2245
2246 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]);
2248
2249 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251
2252 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 }
2256
2257 /* now that the requets is going, we loop toll we have a result */
2258 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req;
2261}
2262
2263static void
2264coro_aio_req_xs (pTHX_ CV *cv)
2265{
2266 dXSARGS;
2267
2268 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2269
2270 XSRETURN_EMPTY;
2271}
2272
2273/*****************************************************************************/
2274
1088MODULE = Coro::State PACKAGE = Coro::State 2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1089 2276
1090PROTOTYPES: DISABLE 2277PROTOTYPES: DISABLE
1091 2278
1092BOOT: 2279BOOT:
1093{ 2280{
1094#ifdef USE_ITHREADS 2281#ifdef USE_ITHREADS
1095 MUTEX_INIT (&coro_mutex); 2282# if CORO_PTHREAD
2283 coro_thx = PERL_GET_CONTEXT;
2284# endif
1096#endif 2285#endif
1097 BOOT_PAGESIZE; 2286 BOOT_PAGESIZE;
1098 2287
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2293 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2294
2295 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2296 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2297 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2298
1099 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2299 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1100 2300
2301 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2302 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1101 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2303 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1102 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1105 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2304 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1106 2305
1107 main_mainstack = PL_mainstack; 2306 main_mainstack = PL_mainstack;
2307 main_top_env = PL_top_env;
1108 2308
2309 while (main_top_env->je_prev)
2310 main_top_env = main_top_env->je_prev;
2311
2312 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf,
2317 newSVpv ("coro_slf", 0), 0);
2318
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf,
2321 newSVpv ("coro schedule like function", 0), 0);
2322 }
2323
1109 coroapi.ver = CORO_API_VERSION; 2324 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION;
2326
1110 coroapi.transfer = api_transfer; 2327 coroapi.transfer = api_transfer;
2328
2329 coroapi.sv_state = SvSTATE_;
2330 coroapi.execute_slf = api_execute_slf;
2331 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself;
2335
2336 {
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
1111 2344
1112 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1113} 2346}
1114 2347
1115SV * 2348SV *
1116new (char *klass, ...) 2349new (char *klass, ...)
1117 CODE: 2350 CODE:
1118{ 2351{
1119 struct coro *coro; 2352 struct coro *coro;
2353 MAGIC *mg;
1120 HV *hv; 2354 HV *hv;
1121 int i; 2355 int i;
1122 2356
1123 Newz (0, coro, 1, struct coro); 2357 Newz (0, coro, 1, struct coro);
1124 coro->args = newAV (); 2358 coro->args = newAV ();
1125 coro->save = CORO_SAVE_ALL;
1126 coro->flags = CF_NEW; 2359 coro->flags = CF_NEW;
1127 2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
1128 hv = newHV (); 2365 coro->hv = hv = newHV ();
1129 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
1130 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131 2369
2370 av_extend (coro->args, items - 1);
1132 for (i = 1; i < items; i++) 2371 for (i = 1; i < items; i++)
1133 av_push (coro->args, newSVsv (ST (i))); 2372 av_push (coro->args, newSVsv (ST (i)));
1134} 2373}
1135 OUTPUT: 2374 OUTPUT:
1136 RETVAL 2375 RETVAL
1137 2376
1138int 2377void
1139save (SV *coro, int new_save = -1) 2378transfer (...)
2379 PROTOTYPE: $$
1140 CODE: 2380 CODE:
1141 RETVAL = api_save (coro, new_save); 2381 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382
2383bool
2384_destroy (SV *coro_sv)
2385 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1142 OUTPUT: 2387 OUTPUT:
1143 RETVAL 2388 RETVAL
1144 2389
1145void 2390void
1146_set_stacklevel (...)
1147 ALIAS:
1148 Coro::State::transfer = 1
1149 Coro::schedule = 2
1150 Coro::cede = 3
1151 Coro::cede_notself = 4
1152 CODE:
1153{
1154 struct transfer_args ta;
1155
1156 switch (ix)
1157 {
1158 case 0:
1159 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1160 ta.next = 0;
1161 break;
1162
1163 case 1:
1164 if (items != 2)
1165 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1166
1167 prepare_transfer (&ta, ST (0), ST (1));
1168 break;
1169
1170 case 2:
1171 prepare_schedule (&ta);
1172 break;
1173
1174 case 3:
1175 prepare_cede (&ta);
1176 break;
1177
1178 case 4:
1179 if (!prepare_cede_notself (&ta))
1180 XSRETURN_EMPTY;
1181
1182 break;
1183 }
1184
1185 BARRIER;
1186 TRANSFER (ta);
1187}
1188
1189void
1190_clone_state_from (SV *dst, SV *src)
1191 CODE:
1192{
1193 struct coro *coro_src = SvSTATE (src);
1194
1195 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197 ++coro_src->refcnt;
1198 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1199}
1200
1201void
1202_exit (code) 2391_exit (int code)
1203 int code
1204 PROTOTYPE: $ 2392 PROTOTYPE: $
1205 CODE: 2393 CODE:
1206 _exit (code); 2394 _exit (code);
1207 2395
1208int 2396int
2397cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$
2399 CODE:
2400 RETVAL = cctx_stacksize;
2401 if (new_stacksize)
2402 {
2403 cctx_stacksize = new_stacksize;
2404 ++cctx_gen;
2405 }
2406 OUTPUT:
2407 RETVAL
2408
2409int
2410cctx_max_idle (int max_idle = 0)
2411 PROTOTYPE: ;$
2412 CODE:
2413 RETVAL = cctx_max_idle;
2414 if (max_idle > 1)
2415 cctx_max_idle = max_idle;
2416 OUTPUT:
2417 RETVAL
2418
2419int
1209cctx_count () 2420cctx_count ()
2421 PROTOTYPE:
1210 CODE: 2422 CODE:
1211 RETVAL = cctx_count; 2423 RETVAL = cctx_count;
1212 OUTPUT: 2424 OUTPUT:
1213 RETVAL 2425 RETVAL
1214 2426
1215int 2427int
1216cctx_idle () 2428cctx_idle ()
2429 PROTOTYPE:
1217 CODE: 2430 CODE:
1218 RETVAL = cctx_idle; 2431 RETVAL = cctx_idle;
1219 OUTPUT: 2432 OUTPUT:
1220 RETVAL 2433 RETVAL
1221 2434
2435void
2436list ()
2437 PROTOTYPE:
2438 PPCODE:
2439{
2440 struct coro *coro;
2441 for (coro = coro_first; coro; coro = coro->next)
2442 if (coro->hv)
2443 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2444}
2445
2446void
2447call (Coro::State coro, SV *coderef)
2448 ALIAS:
2449 eval = 1
2450 CODE:
2451{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 {
2454 struct coro temp;
2455
2456 if (!(coro->flags & CF_RUNNING))
2457 {
2458 PUTBACK;
2459 save_perl (aTHX_ &temp);
2460 load_perl (aTHX_ coro);
2461 }
2462
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK;
2469 PUSHMARK (SP);
2470
2471 if (ix)
2472 eval_sv (coderef, 0);
2473 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475
2476 POPSTACK;
2477 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482
2483 if (!(coro->flags & CF_RUNNING))
2484 {
2485 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp);
2487 SPAGAIN;
2488 }
2489 }
2490}
2491
2492SV *
2493is_ready (Coro::State coro)
2494 PROTOTYPE: $
2495 ALIAS:
2496 is_ready = CF_READY
2497 is_running = CF_RUNNING
2498 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED
2500 CODE:
2501 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT:
2503 RETVAL
2504
2505void
2506throw (Coro::State self, SV *throw = &PL_sv_undef)
2507 PROTOTYPE: $;$
2508 CODE:
2509{
2510 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw;
2512 SvREFCNT_dec (*throwp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2514}
2515
2516void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$
2519 C_ARGS: aTHX_ coro, flags
2520
2521SV *
2522has_cctx (Coro::State coro)
2523 PROTOTYPE: $
2524 CODE:
2525 RETVAL = boolSV (!!coro->cctx);
2526 OUTPUT:
2527 RETVAL
2528
2529int
2530is_traced (Coro::State coro)
2531 PROTOTYPE: $
2532 CODE:
2533 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2534 OUTPUT:
2535 RETVAL
2536
2537UV
2538rss (Coro::State coro)
2539 PROTOTYPE: $
2540 ALIAS:
2541 usecount = 1
2542 CODE:
2543 switch (ix)
2544 {
2545 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2546 case 1: RETVAL = coro->usecount; break;
2547 }
2548 OUTPUT:
2549 RETVAL
2550
2551void
2552force_cctx ()
2553 PROTOTYPE:
2554 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0;
2556
2557void
2558swap_defsv (Coro::State self)
2559 PROTOTYPE: $
2560 ALIAS:
2561 swap_defav = 1
2562 CODE:
2563 if (!self->slot)
2564 croak ("cannot swap state with coroutine that has no saved state,");
2565 else
2566 {
2567 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569
2570 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 }
2572
2573
1222MODULE = Coro::State PACKAGE = Coro 2574MODULE = Coro::State PACKAGE = Coro
1223 2575
1224BOOT: 2576BOOT:
1225{ 2577{
1226 int i; 2578 int i;
1227 2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2585 SvREADONLY_on (coro_current);
2586
1228 coro_stash = gv_stashpv ("Coro", TRUE); 2587 coro_stash = gv_stashpv ("Coro", TRUE);
1229 2588
1230 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1231 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1232 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1233 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1234 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1235 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1236 2595
1237 coro_current = get_sv ("Coro::current", FALSE);
1238 SvREADONLY_on (coro_current);
1239
1240 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1241 coro_ready[i] = newAV (); 2597 coro_ready[i] = newAV ();
1242 2598
1243 { 2599 {
1244 SV *sv = perl_get_sv("Coro::API", 1); 2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1245 2601
1246 coroapi.schedule = api_schedule; 2602 coroapi.schedule = api_schedule;
1247 coroapi.save = api_save;
1248 coroapi.cede = api_cede; 2603 coroapi.cede = api_cede;
1249 coroapi.cede_notself = api_cede_notself; 2604 coroapi.cede_notself = api_cede_notself;
1250 coroapi.ready = api_ready; 2605 coroapi.ready = api_ready;
1251 coroapi.is_ready = api_is_ready; 2606 coroapi.is_ready = api_is_ready;
1252 coroapi.nready = &coro_nready; 2607 coroapi.nready = coro_nready;
1253 coroapi.current = coro_current; 2608 coroapi.current = coro_current;
1254 2609
1255 GCoroAPI = &coroapi; 2610 GCoroAPI = &coroapi;
1256 sv_setiv (sv, (IV)&coroapi); 2611 sv_setiv (sv, (IV)&coroapi);
1257 SvREADONLY_on (sv); 2612 SvREADONLY_on (sv);
1258 } 2613 }
1259} 2614}
2615
2616void
2617schedule (...)
2618 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2620
2621void
2622cede (...)
2623 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede);
2625
2626void
2627cede_notself (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1260 2630
1261void 2631void
1262_set_current (SV *current) 2632_set_current (SV *current)
1263 PROTOTYPE: $ 2633 PROTOTYPE: $
1264 CODE: 2634 CODE:
1265 SvREFCNT_dec (SvRV (coro_current)); 2635 SvREFCNT_dec (SvRV (coro_current));
1266 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2636 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2637
2638void
2639_set_readyhook (SV *hook)
2640 PROTOTYPE: $
2641 CODE:
2642 SvREFCNT_dec (coro_readyhook);
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1267 2644
1268int 2645int
1269prio (Coro::State coro, int newprio = 0) 2646prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$
1270 ALIAS: 2648 ALIAS:
1271 nice = 1 2649 nice = 1
1272 CODE: 2650 CODE:
1273{ 2651{
1274 RETVAL = coro->prio; 2652 RETVAL = coro->prio;
… …
1289 2667
1290SV * 2668SV *
1291ready (SV *self) 2669ready (SV *self)
1292 PROTOTYPE: $ 2670 PROTOTYPE: $
1293 CODE: 2671 CODE:
1294 RETVAL = boolSV (api_ready (self)); 2672 RETVAL = boolSV (api_ready (aTHX_ self));
1295 OUTPUT:
1296 RETVAL
1297
1298SV *
1299is_ready (SV *self)
1300 PROTOTYPE: $
1301 CODE:
1302 RETVAL = boolSV (api_is_ready (self));
1303 OUTPUT: 2673 OUTPUT:
1304 RETVAL 2674 RETVAL
1305 2675
1306int 2676int
1307nready (...) 2677nready (...)
… …
1309 CODE: 2679 CODE:
1310 RETVAL = coro_nready; 2680 RETVAL = coro_nready;
1311 OUTPUT: 2681 OUTPUT:
1312 RETVAL 2682 RETVAL
1313 2683
2684# for async_pool speedup
2685void
2686_pool_1 (SV *cb)
2687 CODE:
2688{
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695
2696 if (!invoke)
2697 {
2698 SV *old = PL_diehook;
2699 PL_diehook = 0;
2700 SvREFCNT_dec (old);
2701 croak ("\3async_pool terminate\2\n");
2702 }
2703
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 {
2717 av_fill (defav, len - 1);
2718 for (i = 0; i < len; ++i)
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2720 }
2721}
2722
2723void
2724_pool_2 (SV *cb)
2725 CODE:
2726{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv);
2729
2730 sv_setsv (cb, &PL_sv_undef);
2731
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2733 coro->saved_deffh = 0;
2734
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743
2744 av_clear (GvAV (PL_defgv));
2745 hv_store (hv, "desc", sizeof ("desc") - 1,
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747
2748 coro->prio = 0;
2749
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754}
2755
2756
2757MODULE = Coro::State PACKAGE = PerlIO::cede
2758
2759BOOT:
2760 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2761
2762
1314MODULE = Coro::State PACKAGE = Coro::AIO 2763MODULE = Coro::State PACKAGE = Coro::Semaphore
1315 2764
1316SV * 2765SV *
1317_get_state () 2766new (SV *klass, SV *count_ = 0)
1318 CODE: 2767 CODE:
1319{ 2768{
1320 struct io_state *data; 2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2770 AV *av = newAV ();
2771 SV **ary;
1321 2772
1322 RETVAL = newSV (sizeof (struct io_state)); 2773 /* unfortunately, building manually saves memory */
1323 data = (struct io_state *)SvPVX (RETVAL); 2774 Newx (ary, 2, SV *);
1324 SvCUR_set (RETVAL, sizeof (struct io_state)); 2775 AvALLOC (av) = ary;
1325 SvPOK_only (RETVAL); 2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
1326 2780
1327 data->errorno = errno; 2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
1328 data->laststype = PL_laststype;
1329 data->laststatval = PL_laststatval;
1330 data->statcache = PL_statcache;
1331} 2782}
1332 OUTPUT: 2783 OUTPUT:
1333 RETVAL 2784 RETVAL
1334 2785
2786SV *
2787count (SV *self)
2788 CODE:
2789 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2790 OUTPUT:
2791 RETVAL
2792
1335void 2793void
1336_set_state (char *data_) 2794up (SV *self, int adjust = 1)
1337 PROTOTYPE: $ 2795 ALIAS:
2796 adjust = 1
2797 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799
2800void
2801down (SV *self)
2802 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2804
2805void
2806try (SV *self)
2807 PPCODE:
2808{
2809 AV *av = (AV *)SvRV (self);
2810 SV *count_sv = AvARRAY (av)[0];
2811 IV count = SvIVX (count_sv);
2812
2813 if (count > 0)
2814 {
2815 --count;
2816 SvIVX (count_sv) = count;
2817 XSRETURN_YES;
2818 }
2819 else
2820 XSRETURN_NO;
2821}
2822
2823void
2824waiters (SV *self)
2825 CODE:
2826{
2827 AV *av = (AV *)SvRV (self);
2828
2829 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2831 else
2832 {
2833 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1);
2835 for (i = 1; i <= AvFILLp (av); ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 }
2838}
2839
2840
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842
2843BOOT:
2844 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2845
2846void
2847_schedule (...)
1338 CODE: 2848 CODE:
1339{ 2849{
1340 struct io_state *data = (void *)data_; 2850 static int incede;
1341 2851
1342 errno = data->errorno; 2852 api_cede_notself (aTHX);
1343 PL_laststype = data->laststype;
1344 PL_laststatval = data->laststatval;
1345 PL_statcache = data->statcache;
1346}
1347 2853
2854 ++incede;
2855 while (coro_nready >= incede && api_cede (aTHX))
2856 ;
2857
2858 sv_setsv (sv_activity, &PL_sv_undef);
2859 if (coro_nready >= incede)
2860 {
2861 PUSHMARK (SP);
2862 PUTBACK;
2863 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2864 }
2865
2866 --incede;
2867}
2868
2869
2870MODULE = Coro::State PACKAGE = Coro::AIO
2871
2872void
2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883}
2884

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