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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC vs.
Revision 1.255 by root, Sat Nov 8 04:52:01 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>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
38#endif 54#endif
39 55
40/* the maximum number of idle cctx that will be pooled */ 56/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 57static int cctx_max_idle = 4;
42 58
43#define PERL_VERSION_ATLEAST(a,b,c) \ 59#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 60 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 61 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 62 && (PERL_VERSION > (b) \
… …
65# ifndef IS_PADCONST 81# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
67# endif 83# endif
68#endif 84#endif
69 85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
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. */
91#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
93 126
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 128
96#if __GNUC__ >= 3 129#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 133#else
100# define attribute(x) 134# define attribute(x)
101# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
102#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
103 141
104#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
105 143
106#include "CoroAPI.h" 144#include "CoroAPI.h"
107 145
108#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
109static perl_mutex coro_mutex; 147static perl_mutex coro_lock;
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
111# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
112#else 150#else
113# define LOCK (void)0 151# define LOCK (void)0
114# define UNLOCK (void)0 152# define UNLOCK (void)0
115#endif 153#endif
116 154
155/* helper storage struct for Coro::AIO */
117struct io_state 156struct io_state
118{ 157{
158 AV *res;
119 int errorno; 159 int errorno;
120 I32 laststype; 160 I32 laststype; /* U16 in 5.10.0 */
121 int laststatval; 161 int laststatval;
122 Stat_t statcache; 162 Stat_t statcache;
123}; 163};
124 164
165static double (*nvtime)(); /* so why doesn't it take void? */
166
167static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174
175static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook;
178static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */
180
181/* async_pool helper stuff */
182static SV *sv_pool_rss;
183static SV *sv_pool_size;
184static AV *av_async_pool;
185
186/* Coro::AnyEvent */
187static SV *sv_activity;
129 188
130static struct coro_cctx *cctx_first; 189static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 190static int cctx_count, cctx_idle;
191
192enum {
193 CC_MAPPED = 0x01,
194 CC_NOREUSE = 0x02, /* throw this away after tracing */
195 CC_TRACE = 0x04,
196 CC_TRACE_SUB = 0x08, /* trace sub calls */
197 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199};
132 200
133/* this is a structure representing a c-level coroutine */ 201/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 202typedef struct coro_cctx {
135 struct coro_cctx *next; 203 struct coro_cctx *next;
136 204
137 /* the stack */ 205 /* the stack */
138 void *sptr; 206 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 207 size_t ssize;
140 208
141 /* cpu state */ 209 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 210 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 */ 211 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 212 JMPENV *top_env;
145 coro_context cctx; 213 coro_context cctx;
146 214
147 int inuse; 215 U32 gen;
148
149#if USE_VALGRIND 216#if CORO_USE_VALGRIND
150 int valgrind_id; 217 int valgrind_id;
151#endif 218#endif
219 unsigned char flags;
152} coro_cctx; 220} coro_cctx;
153 221
154enum { 222enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 223 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 224 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* has never been switched to */ 225 CF_NEW = 0x0004, /* has never been switched to */
158 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 226 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
159}; 227};
160 228
229/* the structure where most of the perl state is stored, overlaid on the cxstack */
230typedef struct {
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name;
236# include "state.h"
237#undef VAR
238} perl_slots;
239
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241
161/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
162struct coro { 243struct coro {
163 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the c coroutine allocated to this perl coroutine, if any */
164 coro_cctx *cctx; 245 coro_cctx *cctx;
165 246
247 /* process data */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
166 /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
167 AV *args; 252 int refcnt; /* coroutines are refcounted, yes */
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
171 255
172 /* optionally saved, might be zero */ 256 /* statistics */
173 AV *defav; /* @_ */ 257 int usecount; /* number of transfers to this coro */
174 SV *defsv; /* $_ */
175 SV *errsv; /* $@ */
176 SV *irssv; /* $/ */
177 SV *irssv_sv; /* real $/ cache */
178
179#define VAR(name,type) type name;
180# include "state.h"
181#undef VAR
182 258
183 /* coro process data */ 259 /* coro process data */
184 int prio; 260 int prio;
261 SV *throw; /* exception to be thrown */
262
263 /* async_pool */
264 SV *saved_deffh;
265
266 /* linked list */
267 struct coro *next, *prev;
185}; 268};
186 269
187typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
189 272
273/** Coro ********************************************************************/
274
275#define PRIO_MAX 3
276#define PRIO_HIGH 1
277#define PRIO_NORMAL 0
278#define PRIO_LOW -1
279#define PRIO_IDLE -3
280#define PRIO_MIN -4
281
282/* for Coro.pm */
283static SV *coro_current;
284static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
286static int coro_nready;
287static struct coro *coro_first;
288
289/** lowlevel stuff **********************************************************/
290
291static SV *
292coro_get_sv (pTHX_ const char *name, int create)
293{
294#if PERL_VERSION_ATLEAST (5,10,0)
295 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
296 get_sv (name, create);
297#endif
298 return get_sv (name, create);
299}
300
190static AV * 301static AV *
302coro_get_av (pTHX_ const char *name, int create)
303{
304#if PERL_VERSION_ATLEAST (5,10,0)
305 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
306 get_av (name, create);
307#endif
308 return get_av (name, create);
309}
310
311static HV *
312coro_get_hv (pTHX_ const char *name, int create)
313{
314#if PERL_VERSION_ATLEAST (5,10,0)
315 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
316 get_hv (name, create);
317#endif
318 return get_hv (name, create);
319}
320
321static AV *
191coro_clone_padlist (CV *cv) 322coro_clone_padlist (pTHX_ CV *cv)
192{ 323{
193 AV *padlist = CvPADLIST (cv); 324 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 325 AV *newpadlist, *newpad;
195 326
196 newpadlist = newAV (); 327 newpadlist = newAV ();
197 AvREAL_off (newpadlist); 328 AvREAL_off (newpadlist);
198#if PERL_VERSION_ATLEAST (5,9,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
199 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
200#else 331#else
201 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 332 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
202#endif 333#endif
203 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 334 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
204 --AvFILLp (padlist); 335 --AvFILLp (padlist);
205 336
206 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 337 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
207 av_store (newpadlist, 1, (SV *)newpad); 338 av_store (newpadlist, 1, (SV *)newpad);
208 339
209 return newpadlist; 340 return newpadlist;
210} 341}
211 342
212static void 343static void
213free_padlist (AV *padlist) 344free_padlist (pTHX_ AV *padlist)
214{ 345{
215 /* may be during global destruction */ 346 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 347 if (SvREFCNT (padlist))
217 { 348 {
218 I32 i = AvFILLp (padlist); 349 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 370 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 371 AV *av = (AV *)mg->mg_obj;
241 372
242 /* casting is fun. */ 373 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 374 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 375 free_padlist (aTHX_ padlist);
245 376
246 SvREFCNT_dec (av); 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
247 378
248 return 0; 379 return 0;
249} 380}
250 381
251#define PERL_MAGIC_coro PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv PERL_MAGIC_ext
383#define CORO_MAGIC_type_state PERL_MAGIC_ext
252 384
253static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 385static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0,
387 coro_cv_free
388};
254 389
255#define CORO_MAGIC(cv) \ 390#define CORO_MAGIC(sv, type) \
256 SvMAGIC (cv) \ 391 SvMAGIC (sv) \
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 392 ? SvMAGIC (sv)->mg_type == type \
258 ? SvMAGIC (cv) \ 393 ? SvMAGIC (sv) \
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 394 : mg_find (sv, type) \
260 : 0 395 : 0
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
399
400static struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
261 425
262/* the next two functions merely cache the padlists */ 426/* the next two functions merely cache the padlists */
263static void 427static void
264get_padlist (CV *cv) 428get_padlist (pTHX_ CV *cv)
265{ 429{
266 MAGIC *mg = CORO_MAGIC (cv); 430 MAGIC *mg = CORO_MAGIC_cv (cv);
267 AV *av; 431 AV *av;
268 432
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 433 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 434 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 435 else
272 { 436 {
273#if PREFER_PERL_FUNCTIONS 437#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 438 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */
275 CV *cp = Perl_cv_clone (cv); 440 CV *cp = Perl_cv_clone (cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 441 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 442 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 443 SvREFCNT_dec (cp);
279#else 444#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 445 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281#endif 446#endif
282 } 447 }
283} 448}
284 449
285static void 450static void
286put_padlist (CV *cv) 451put_padlist (pTHX_ CV *cv)
287{ 452{
288 MAGIC *mg = CORO_MAGIC (cv); 453 MAGIC *mg = CORO_MAGIC_cv (cv);
289 AV *av; 454 AV *av;
290 455
291 if (!mg) 456 if (expect_false (!mg))
292 { 457 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV ();
297 }
298 458
299 av = (AV *)mg->mg_obj; 459 av = (AV *)mg->mg_obj;
300 460
301 if (AvFILLp (av) >= AvMAX (av)) 461 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 462 av_extend (av, AvMAX (av) + 1);
303 463
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 464 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 465}
306 466
307#define SB do { 467/** load & save, init *******************************************************/
308#define SE } while (0)
309
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311 468
312static void 469static void
313load_perl (Coro__State c) 470load_perl (pTHX_ Coro__State c)
314{ 471{
472 perl_slots *slot = c->slot;
473 c->slot = 0;
474
475 PL_mainstack = c->mainstack;
476
477 GvSV (PL_defgv) = slot->defsv;
478 GvAV (PL_defgv) = slot->defav;
479 GvSV (PL_errgv) = slot->errsv;
480 GvSV (irsgv) = slot->irsgv;
481
315#define VAR(name,type) PL_ ## name = c->name; 482 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 483 # include "state.h"
317#undef VAR 484 #undef VAR
318
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
321 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
322 if (c->irssv)
323 {
324 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
325 SvREFCNT_dec (c->irssv);
326 else
327 {
328 REPLACE_SV (PL_rs, c->irssv);
329 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330 sv_setsv (c->irssv_sv, PL_rs);
331 }
332 }
333 485
334 { 486 {
335 dSP; 487 dSP;
488
336 CV *cv; 489 CV *cv;
337 490
338 /* now do the ugly restore mess */ 491 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 492 while (expect_true (cv = (CV *)POPs))
340 { 493 {
341 put_padlist (cv); /* mark this padlist as available */ 494 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 495 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 496 CvPADLIST (cv) = (AV *)POPs;
344 } 497 }
345 498
346 PUTBACK; 499 PUTBACK;
347 } 500 }
348} 501}
349 502
350static void 503static void
351save_perl (Coro__State c) 504save_perl (pTHX_ Coro__State c)
352{ 505{
353 { 506 {
354 dSP; 507 dSP;
355 I32 cxix = cxstack_ix; 508 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 509 PERL_CONTEXT *ccstk = cxstack;
… …
359 /* 512 /*
360 * the worst thing you can imagine happens first - we have to save 513 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 514 * (and reinitialize) all cv's in the whole callchain :(
362 */ 515 */
363 516
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 517 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 518 /* this loop was inspired by pp_caller */
367 for (;;) 519 for (;;)
368 { 520 {
369 while (cxix >= 0) 521 while (expect_true (cxix >= 0))
370 { 522 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 523 PERL_CONTEXT *cx = &ccstk[cxix--];
372 524
373 if (CxTYPE (cx) == CXt_SUB) 525 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 526 {
375 CV *cv = cx->blk_sub.cv; 527 CV *cv = cx->blk_sub.cv;
376 528
377 if (CvDEPTH (cv)) 529 if (expect_true (CvDEPTH (cv)))
378 { 530 {
379 EXTEND (SP, 3); 531 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 532 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 533 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 534 PUSHs ((SV *)cv);
383 535
384 CvDEPTH (cv) = 0; 536 CvDEPTH (cv) = 0;
385 get_padlist (cv); 537 get_padlist (aTHX_ cv);
386 } 538 }
387 } 539 }
388 } 540 }
389 541
390 if (top_si->si_type == PERLSI_MAIN) 542 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 543 break;
392 544
393 top_si = top_si->si_prev; 545 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 546 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 547 cxix = top_si->si_cxix;
396 } 548 }
397 549
398 PUTBACK; 550 PUTBACK;
399 } 551 }
400 552
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 553 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 554 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 555 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 556 if (SLOT_COUNT >= 2) CXINC;
557 if (SLOT_COUNT >= 3) CXINC;
558 {
559 int i;
560 for (i = 3; i < SLOT_COUNT; ++i)
561 CXINC;
562 }
563 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 564
565 c->mainstack = PL_mainstack;
566
567 {
568 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
569
570 slot->defav = GvAV (PL_defgv);
571 slot->defsv = DEFSV;
572 slot->errsv = ERRSV;
573 slot->irsgv = GvSV (irsgv);
574
406#define VAR(name,type)c->name = PL_ ## name; 575 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 576 # include "state.h"
408#undef VAR 577 #undef VAR
578 }
409} 579}
410 580
411/* 581/*
412 * allocate various perl stacks. This is an exact copy 582 * allocate various perl stacks. This is an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 583 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 584 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 585 * not usually need a lot of stackspace.
416 */ 586 */
417#if PREFER_PERL_FUNCTIONS 587#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 588# define coro_init_stacks init_stacks
419#else 589#else
420static void 590static void
421coro_init_stacks () 591coro_init_stacks (pTHX)
422{ 592{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 593 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 594 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 595 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 596 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 597
428 PL_stack_base = AvARRAY(PL_curstack); 598 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 599 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 600 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 601
432 New(50,PL_tmps_stack,128,SV*); 602 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 603 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 604 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 605 PL_tmps_max = 32;
436 606
437 New(54,PL_markstack,32,I32); 607 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 608 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 609 PL_markstack_max = PL_markstack + 16;
440 610
441#ifdef SET_MARK_OFFSET 611#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 612 SET_MARK_OFFSET;
443#endif 613#endif
444 614
445 New(54,PL_scopestack,32,I32); 615 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 616 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 617 PL_scopestack_max = 8;
448 618
449 New(54,PL_savestack,64,ANY); 619 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 620 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 621 PL_savestack_max = 24;
452 622
453#if !PERL_VERSION_ATLEAST (5,9,0) 623#if !PERL_VERSION_ATLEAST (5,10,0)
454 New(54,PL_retstack,16,OP*); 624 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 625 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 626 PL_retstack_max = 4;
457#endif 627#endif
458} 628}
459#endif 629#endif
460 630
461/* 631/*
462 * destroy the stacks, the callchain etc... 632 * destroy the stacks, the callchain etc...
463 */ 633 */
464static void 634static void
465coro_destroy_stacks () 635coro_destruct_stacks (pTHX)
466{ 636{
467 if (!IN_DESTRUCT)
468 {
469 /* restore all saved variables and stuff */
470 LEAVE_SCOPE (0);
471 assert (PL_tmps_floor == -1);
472
473 /* free all temporaries */
474 FREETMPS;
475 assert (PL_tmps_ix == -1);
476
477 /* unwind all extra stacks */
478 POPSTACK_TO (PL_mainstack);
479
480 /* unwind main stack */
481 dounwind (-1);
482 }
483
484 while (PL_curstackinfo->si_next) 637 while (PL_curstackinfo->si_next)
485 PL_curstackinfo = PL_curstackinfo->si_next; 638 PL_curstackinfo = PL_curstackinfo->si_next;
486 639
487 while (PL_curstackinfo) 640 while (PL_curstackinfo)
488 { 641 {
… …
498 651
499 Safefree (PL_tmps_stack); 652 Safefree (PL_tmps_stack);
500 Safefree (PL_markstack); 653 Safefree (PL_markstack);
501 Safefree (PL_scopestack); 654 Safefree (PL_scopestack);
502 Safefree (PL_savestack); 655 Safefree (PL_savestack);
503#if !PERL_VERSION_ATLEAST (5,9,0) 656#if !PERL_VERSION_ATLEAST (5,10,0)
504 Safefree (PL_retstack); 657 Safefree (PL_retstack);
505#endif 658#endif
506} 659}
507 660
661static size_t
662coro_rss (pTHX_ struct coro *coro)
663{
664 size_t rss = sizeof (*coro);
665
666 if (coro->mainstack)
667 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING)
672 {
673 slot = &tmp_slot;
674
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR
678 }
679 else
680 slot = coro->slot;
681
682 if (slot)
683 {
684 rss += sizeof (slot->curstackinfo);
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 }
696 }
697
698 return rss;
699}
700
701/** coroutine stack handling ************************************************/
702
703static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
704static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
705static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
706
707/* apparently < 5.8.8 */
708#ifndef MgPV_nolen_const
709#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
710 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
711 (const char*)(mg)->mg_ptr)
712#endif
713
714/*
715 * This overrides the default magic get method of %SIG elements.
716 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
717 * and instead of tryign to save and restore the hash elements, we just provide
718 * readback here.
719 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
720 * not expecting this to actually change the hook. This is a potential problem
721 * when a schedule happens then, but we ignore this.
722 */
723static int
724coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
725{
726 const char *s = MgPV_nolen_const (mg);
727
728 if (*s == '_')
729 {
730 SV **svp = 0;
731
732 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
733 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
734
735 if (svp)
736 {
737 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
738 return 0;
739 }
740 }
741
742 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
743}
744
745static int
746coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
747{
748 const char *s = MgPV_nolen_const (mg);
749
750 if (*s == '_')
751 {
752 SV **svp = 0;
753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 SV *old = *svp;
760 *svp = 0;
761 SvREFCNT_dec (old);
762 return 0;
763 }
764 }
765
766 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
767}
768
769static int
770coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
771{
772 const char *s = MgPV_nolen_const (mg);
773
774 if (*s == '_')
775 {
776 SV **svp = 0;
777
778 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
779 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
780
781 if (svp)
782 {
783 SV *old = *svp;
784 *svp = newSVsv (sv);
785 SvREFCNT_dec (old);
786 return 0;
787 }
788 }
789
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791}
792
508static void 793static void
509setup_coro (struct coro *coro) 794coro_setup (pTHX_ struct coro *coro)
510{ 795{
511 /* 796 /*
512 * emulate part of the perl startup here. 797 * emulate part of the perl startup here.
513 */ 798 */
514
515 coro_init_stacks (); 799 coro_init_stacks (aTHX);
516 800
801 PL_runops = RUNOPS_DEFAULT;
517 PL_curcop = &PL_compiling; 802 PL_curcop = &PL_compiling;
518 PL_in_eval = EVAL_NULL; 803 PL_in_eval = EVAL_NULL;
804 PL_comppad = 0;
519 PL_curpm = 0; 805 PL_curpm = 0;
806 PL_curpad = 0;
520 PL_localizing = 0; 807 PL_localizing = 0;
521 PL_dirty = 0; 808 PL_dirty = 0;
522 PL_restartop = 0; 809 PL_restartop = 0;
810#if PERL_VERSION_ATLEAST (5,10,0)
811 PL_parser = 0;
812#endif
813
814 /* recreate the die/warn hooks */
815 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
816 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
817
818 GvSV (PL_defgv) = newSV (0);
819 GvAV (PL_defgv) = coro->args; coro->args = 0;
820 GvSV (PL_errgv) = newSV (0);
821 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
822 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
523 824
524 { 825 {
525 dSP; 826 dSP;
526 LOGOP myop; 827 LOGOP myop;
527 828
528 SvREFCNT_dec (GvAV (PL_defgv));
529 GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531 Zero (&myop, 1, LOGOP); 829 Zero (&myop, 1, LOGOP);
532 myop.op_next = Nullop; 830 myop.op_next = Nullop;
533 myop.op_flags = OPf_WANT_VOID; 831 myop.op_flags = OPf_WANT_VOID;
534 832
535 PUSHMARK (SP); 833 PUSHMARK (SP);
536 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
537 PUTBACK; 835 PUTBACK;
538 PL_op = (OP *)&myop; 836 PL_op = (OP *)&myop;
539 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540 SPAGAIN; 838 SPAGAIN;
541 } 839 }
542 840
543 ENTER; /* necessary e.g. for dounwind */ 841 /* this newly created coroutine might be run on an existing cctx which most
842 * likely was suspended in set_stacklevel, called from entersub.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */
846 ENTER;
544} 847}
545 848
546static void 849static void
850coro_destruct (pTHX_ struct coro *coro)
851{
852 if (!IN_DESTRUCT)
853 {
854 /* restore all saved variables and stuff */
855 LEAVE_SCOPE (0);
856 assert (PL_tmps_floor == -1);
857
858 /* free all temporaries */
859 FREETMPS;
860 assert (PL_tmps_ix == -1);
861
862 /* unwind all extra stacks */
863 POPSTACK_TO (PL_mainstack);
864
865 /* unwind main stack */
866 dounwind (-1);
867 }
868
869 SvREFCNT_dec (GvSV (PL_defgv));
870 SvREFCNT_dec (GvAV (PL_defgv));
871 SvREFCNT_dec (GvSV (PL_errgv));
872 SvREFCNT_dec (PL_defoutgv);
873 SvREFCNT_dec (PL_rs);
874 SvREFCNT_dec (GvSV (irsgv));
875
876 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook);
878
879 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw);
881
882 coro_destruct_stacks (aTHX);
883}
884
885static void
547free_coro_mortal () 886free_coro_mortal (pTHX)
548{ 887{
549 if (coro_mortal) 888 if (expect_true (coro_mortal))
550 { 889 {
551 SvREFCNT_dec (coro_mortal); 890 SvREFCNT_dec (coro_mortal);
552 coro_mortal = 0; 891 coro_mortal = 0;
553 } 892 }
554} 893}
555 894
895static int
896runops_trace (pTHX)
897{
898 COP *oldcop = 0;
899 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx;
902
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 {
905 PERL_ASYNC_CHECK ();
906
907 if (cctx->flags & CC_TRACE_ALL)
908 {
909 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
910 {
911 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
912 SV **bot, **top;
913 AV *av = newAV (); /* return values */
914 SV **cb;
915 dSP;
916
917 GV *gv = CvGV (cx->blk_sub.cv);
918 SV *fullname = sv_2mortal (newSV (0));
919 if (isGV (gv))
920 gv_efullname3 (fullname, gv, 0);
921
922 bot = PL_stack_base + cx->blk_oldsp + 1;
923 top = cx->blk_gimme == G_ARRAY ? SP + 1
924 : cx->blk_gimme == G_SCALAR ? bot + 1
925 : bot;
926
927 av_extend (av, top - bot);
928 while (bot < top)
929 av_push (av, SvREFCNT_inc_NN (*bot++));
930
931 PL_runops = RUNOPS_DEFAULT;
932 ENTER;
933 SAVETMPS;
934 EXTEND (SP, 3);
935 PUSHMARK (SP);
936 PUSHs (&PL_sv_no);
937 PUSHs (fullname);
938 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
939 PUTBACK;
940 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
941 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
942 SPAGAIN;
943 FREETMPS;
944 LEAVE;
945 PL_runops = runops_trace;
946 }
947
948 if (oldcop != PL_curcop)
949 {
950 oldcop = PL_curcop;
951
952 if (PL_curcop != &PL_compiling)
953 {
954 SV **cb;
955
956 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
957 {
958 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
959
960 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
961 {
962 runops_proc_t old_runops = PL_runops;
963 dSP;
964 GV *gv = CvGV (cx->blk_sub.cv);
965 SV *fullname = sv_2mortal (newSV (0));
966
967 if (isGV (gv))
968 gv_efullname3 (fullname, gv, 0);
969
970 PL_runops = RUNOPS_DEFAULT;
971 ENTER;
972 SAVETMPS;
973 EXTEND (SP, 3);
974 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes);
976 PUSHs (fullname);
977 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
978 PUTBACK;
979 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
980 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
981 SPAGAIN;
982 FREETMPS;
983 LEAVE;
984 PL_runops = runops_trace;
985 }
986
987 oldcxix = cxstack_ix;
988 }
989
990 if (cctx->flags & CC_TRACE_LINE)
991 {
992 dSP;
993
994 PL_runops = RUNOPS_DEFAULT;
995 ENTER;
996 SAVETMPS;
997 EXTEND (SP, 3);
998 PL_runops = RUNOPS_DEFAULT;
999 PUSHMARK (SP);
1000 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1001 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1002 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN;
1006 FREETMPS;
1007 LEAVE;
1008 PL_runops = runops_trace;
1009 }
1010 }
1011 }
1012 }
1013 }
1014
1015 TAINT_NOT;
1016 return 0;
1017}
1018
556/* inject a fake call to Coro::State::_cctx_init into the execution */ 1019/* inject a fake call to Coro::State::_cctx_init into the execution */
1020/* _cctx_init should be careful, as it could be called at almost any time */
1021/* during execution of a perl program */
557static void NOINLINE 1022static void NOINLINE
558prepare_cctx (coro_cctx *cctx) 1023cctx_prepare (pTHX_ coro_cctx *cctx)
559{ 1024{
560 dSP; 1025 dSP;
561 LOGOP myop; 1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env;
1029
1030 if (cctx->flags & CC_TRACE)
1031 PL_runops = runops_trace;
562 1032
563 Zero (&myop, 1, LOGOP); 1033 Zero (&myop, 1, LOGOP);
564 myop.op_next = PL_op; 1034 myop.op_next = PL_op;
565 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1035 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566 1036
… …
572 PL_op = (OP *)&myop; 1042 PL_op = (OP *)&myop;
573 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1043 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574 SPAGAIN; 1044 SPAGAIN;
575} 1045}
576 1046
1047/*
1048 * this is a _very_ stripped down perl interpreter ;)
1049 */
577static void 1050static void
578coro_run (void *arg) 1051cctx_run (void *arg)
579{ 1052{
1053 dTHX;
1054
580 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */
581 UNLOCK; 1056 UNLOCK;
582 1057
583 /* 1058 /* we now skip the entersub that lead to transfer() */
584 * this is a _very_ stripped down perl interpreter ;) 1059 PL_op = PL_op->op_next;
585 */
586 PL_top_env = &PL_start_env;
587 1060
588 /* inject call to cctx_init */ 1061 /* inject a fake subroutine call to cctx_init */
589 prepare_cctx ((coro_cctx *)arg); 1062 cctx_prepare (aTHX_ (coro_cctx *)arg);
590 1063
591 /* somebody will hit me for both perl_run and PL_restartop */ 1064 /* somebody or something will hit me for both perl_run and PL_restartop */
592 PL_restartop = PL_op; 1065 PL_restartop = PL_op;
593 perl_run (PL_curinterp); 1066 perl_run (PL_curinterp);
594 1067
595 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1068 /*
596 abort (); 1069 * If perl-run returns we assume exit() was being called or the coro
1070 * fell off the end, which seems to be the only valid (non-bug)
1071 * reason for perl_run to return. We try to exit by jumping to the
1072 * bootstrap-time "top" top_env, as we cannot restore the "main"
1073 * coroutine as Coro has no such concept
1074 */
1075 PL_top_env = main_top_env;
1076 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
597} 1077}
598 1078
599static coro_cctx * 1079static coro_cctx *
600cctx_new () 1080cctx_new ()
601{ 1081{
602 coro_cctx *cctx; 1082 coro_cctx *cctx;
1083 void *stack_start;
1084 size_t stack_size;
603 1085
604 ++cctx_count; 1086 ++cctx_count;
605
606 Newz (0, cctx, 1, coro_cctx); 1087 Newz (0, cctx, 1, coro_cctx);
607 1088
1089 cctx->gen = cctx_gen;
1090
608#if HAVE_MMAP 1091#if HAVE_MMAP
609
610 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611 /* mmap supposedly does allocate-on-write for us */ 1093 /* mmap supposedly does allocate-on-write for us */
612 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
613 1095
614 if (cctx->sptr == (void *)-1) 1096 if (cctx->sptr != (void *)-1)
615 {
616 perror ("FATAL: unable to mmap stack for coroutine");
617 _exit (EXIT_FAILURE);
618 } 1097 {
619
620# if STACKGUARD 1098# if CORO_STACKGUARD
621 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622# endif 1100# endif
1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1103 cctx->flags |= CC_MAPPED;
1104 }
1105 else
1106#endif
1107 {
1108 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1109 New (0, cctx->sptr, cctx_stacksize, long);
623 1110
624#else
625
626 cctx->ssize = STACKSIZE * (long)sizeof (long);
627 New (0, cctx->sptr, STACKSIZE, long);
628
629 if (!cctx->sptr) 1111 if (!cctx->sptr)
630 { 1112 {
631 perror ("FATAL: unable to malloc stack for coroutine"); 1113 perror ("FATAL: unable to allocate stack for coroutine");
632 _exit (EXIT_FAILURE); 1114 _exit (EXIT_FAILURE);
633 } 1115 }
634 1116
635#endif 1117 stack_start = cctx->sptr;
1118 stack_size = cctx->ssize;
1119 }
636 1120
637#if USE_VALGRIND 1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
638 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
639 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640 cctx->ssize + (char *)cctx->sptr
641 );
642#endif
643
644 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
645 1123
646 return cctx; 1124 return cctx;
647} 1125}
648 1126
649static void 1127static void
… …
651{ 1129{
652 if (!cctx) 1130 if (!cctx)
653 return; 1131 return;
654 1132
655 --cctx_count; 1133 --cctx_count;
1134 coro_destroy (&cctx->cctx);
656 1135
1136 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr)
1138 {
657#if USE_VALGRIND 1139#if CORO_USE_VALGRIND
658 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659#endif 1141#endif
660 1142
661#if HAVE_MMAP 1143#if HAVE_MMAP
1144 if (cctx->flags & CC_MAPPED)
662 munmap (cctx->sptr, cctx->ssize); 1145 munmap (cctx->sptr, cctx->ssize);
663#else 1146 else
1147#endif
664 Safefree (cctx->sptr); 1148 Safefree (cctx->sptr);
665#endif 1149 }
666 1150
667 Safefree (cctx); 1151 Safefree (cctx);
668} 1152}
669 1153
1154/* wether this cctx should be destructed */
1155#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1156
670static coro_cctx * 1157static coro_cctx *
671cctx_get () 1158cctx_get (pTHX)
672{ 1159{
673 coro_cctx *cctx; 1160 while (expect_true (cctx_first))
674
675 if (cctx_first)
676 { 1161 {
677 cctx = cctx_first; 1162 coro_cctx *cctx = cctx_first;
678 cctx_first = cctx->next; 1163 cctx_first = cctx->next;
679 --cctx_idle; 1164 --cctx_idle;
680 } 1165
681 else 1166 if (expect_true (!CCTX_EXPIRED (cctx)))
682 { 1167 return cctx;
683 cctx = cctx_new (); 1168
684 PL_op = PL_op->op_next; 1169 cctx_destroy (cctx);
685 } 1170 }
686 1171
687 return cctx; 1172 return cctx_new ();
688} 1173}
689 1174
690static void 1175static void
691cctx_put (coro_cctx *cctx) 1176cctx_put (coro_cctx *cctx)
692{ 1177{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1179
693 /* free another cctx if overlimit */ 1180 /* free another cctx if overlimit */
694 if (cctx_idle >= MAX_IDLE_CCTX) 1181 if (expect_false (cctx_idle >= cctx_max_idle))
695 { 1182 {
696 coro_cctx *first = cctx_first; 1183 coro_cctx *first = cctx_first;
697 cctx_first = first->next; 1184 cctx_first = first->next;
698 --cctx_idle; 1185 --cctx_idle;
699 1186
700 assert (!first->inuse);
701 cctx_destroy (first); 1187 cctx_destroy (first);
702 } 1188 }
703 1189
704 ++cctx_idle; 1190 ++cctx_idle;
705 cctx->next = cctx_first; 1191 cctx->next = cctx_first;
706 cctx_first = cctx; 1192 cctx_first = cctx;
707} 1193}
708 1194
709/* never call directly, always through the coro_state_transfer global variable */ 1195/** coroutine switching *****************************************************/
1196
1197static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{
1200 if (expect_true (prev != next))
1201 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1204
1205 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1207
1208 if (expect_false (next->flags & CF_DESTROYED))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1210
1211#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1214#endif
1215 }
1216}
1217
1218/* always use the TRANSFER macro */
710static void NOINLINE 1219static void NOINLINE
711transfer (struct coro *prev, struct coro *next) 1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
712{ 1221{
713 dSTACKLEVEL; 1222 dSTACKLEVEL;
714 1223
715 /* sometimes transfer is only called to set idle_sp */ 1224 /* sometimes transfer is only called to set idle_sp */
716 if (!next) 1225 if (expect_false (!next))
717 { 1226 {
718 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1227 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
719 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
720 } 1229 }
721 else if (prev != next) 1230 else if (expect_true (prev != next))
722 { 1231 {
1232 static volatile int has_throw;
723 coro_cctx *prev__cctx; 1233 coro_cctx *prev__cctx;
724 1234
725 if (prev->flags & CF_NEW) 1235 if (expect_false (prev->flags & CF_NEW))
726 { 1236 {
727 /* create a new empty context */ 1237 /* create a new empty/source context */
1238 ++cctx_count;
728 Newz (0, prev->cctx, 1, coro_cctx); 1239 New (0, prev->cctx, 1, coro_cctx);
729 prev->cctx->inuse = 1; 1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
730 prev->flags &= ~CF_NEW; 1243 prev->flags &= ~CF_NEW;
731 prev->flags |= CF_RUNNING; 1244 prev->flags |= CF_RUNNING;
732 } 1245 }
733 1246
734 /*TODO: must not croak here */
735 if (!prev->flags & CF_RUNNING)
736 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
737
738 if (next->flags & CF_RUNNING)
739 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
740
741 if (next->flags & CF_DESTROYED)
742 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
743
744 prev->flags &= ~CF_RUNNING; 1247 prev->flags &= ~CF_RUNNING;
745 next->flags |= CF_RUNNING; 1248 next->flags |= CF_RUNNING;
746 1249
747 LOCK; 1250 LOCK;
748 1251
1252 /* first get rid of the old state */
1253 save_perl (aTHX_ prev);
1254
749 if (next->flags & CF_NEW) 1255 if (expect_false (next->flags & CF_NEW))
750 { 1256 {
751 /* need to start coroutine */ 1257 /* need to start coroutine */
752 next->flags &= ~CF_NEW; 1258 next->flags &= ~CF_NEW;
753 /* first get rid of the old state */
754 save_perl (prev);
755 /* setup coroutine call */ 1259 /* setup coroutine call */
756 setup_coro (next); 1260 coro_setup (aTHX_ next);
757 /* need a new stack */
758 assert (!next->cctx);
759 } 1261 }
760 else 1262 else
761 {
762 /* coroutine already started */
763 save_perl (prev);
764 load_perl (next); 1263 load_perl (aTHX_ next);
765 }
766 1264
767 prev__cctx = prev->cctx; 1265 prev__cctx = prev->cctx;
768 1266
769 /* possibly "free" the cctx */ 1267 /* possibly "free" the cctx */
1268 if (expect_true (
770 if (prev__cctx->idle_sp == STACKLEVEL) 1269 prev__cctx->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE)
1271 && !force_cctx
1272 ))
771 { 1273 {
772 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1274 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
773 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
774 1276
775 prev->cctx = 0; 1277 prev->cctx = 0;
776 1278
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1281 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1282 if (!next->cctx)
1283 next->cctx = cctx_get (aTHX);
1284
777 cctx_put (prev__cctx); 1285 cctx_put (prev__cctx);
778 prev__cctx->inuse = 0;
779 } 1286 }
780 1287
1288 ++next->usecount;
1289
781 if (!next->cctx) 1290 if (expect_true (!next->cctx))
782 {
783 next->cctx = cctx_get (); 1291 next->cctx = cctx_get (aTHX);
784 assert (!next->cctx->inuse);
785 next->cctx->inuse = 1;
786 }
787 1292
1293 has_throw = !!next->throw;
1294
788 if (prev__cctx != next->cctx) 1295 if (expect_false (prev__cctx != next->cctx))
789 { 1296 {
790 prev__cctx->top_env = PL_top_env; 1297 prev__cctx->top_env = PL_top_env;
791 PL_top_env = next->cctx->top_env; 1298 PL_top_env = next->cctx->top_env;
792 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793 } 1300 }
794 1301
795 free_coro_mortal (); 1302 free_coro_mortal (aTHX);
796 UNLOCK; 1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
797 } 1317 }
798} 1318}
799 1319
800struct transfer_args 1320struct transfer_args
801{ 1321{
802 struct coro *prev, *next; 1322 struct coro *prev, *next;
803}; 1323};
804 1324
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
805#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1327
1328/** high level stuff ********************************************************/
806 1329
807static int 1330static int
808coro_state_destroy (struct coro *coro) 1331coro_state_destroy (pTHX_ struct coro *coro)
809{ 1332{
810 if (coro->flags & CF_DESTROYED) 1333 if (coro->flags & CF_DESTROYED)
811 return 0; 1334 return 0;
812 1335
813 coro->flags |= CF_DESTROYED; 1336 coro->flags |= CF_DESTROYED;
1337
1338 if (coro->flags & CF_READY)
1339 {
1340 /* reduce nready, as destroying a ready coro effectively unreadies it */
1341 /* alternative: look through all ready queues and remove the coro */
1342 LOCK;
1343 --coro_nready;
1344 UNLOCK;
1345 }
1346 else
1347 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
814 1348
815 if (coro->mainstack && coro->mainstack != main_mainstack) 1349 if (coro->mainstack && coro->mainstack != main_mainstack)
816 { 1350 {
817 assert (!(coro->flags & CF_RUNNING));
818
819 struct coro temp; 1351 struct coro temp;
820 Zero (&temp, 1, struct coro);
821 temp.save = CORO_SAVE_ALL;
822 1352
823 if (coro->flags & CF_RUNNING) 1353 if (coro->flags & CF_RUNNING)
824 croak ("FATAL: tried to destroy currently running coroutine"); 1354 croak ("FATAL: tried to destroy currently running coroutine");
825 1355
826 save_perl (&temp); 1356 save_perl (aTHX_ &temp);
827 load_perl (coro); 1357 load_perl (aTHX_ coro);
828 1358
829 coro_destroy_stacks (); 1359 coro_destruct (aTHX_ coro);
830 1360
831 load_perl (&temp); /* this will get rid of defsv etc.. */ 1361 load_perl (aTHX_ &temp);
832 1362
833 coro->mainstack = 0; 1363 coro->slot = 0;
834 } 1364 }
835 1365
836 cctx_destroy (coro->cctx); 1366 cctx_destroy (coro->cctx);
837 SvREFCNT_dec (coro->args); 1367 SvREFCNT_dec (coro->args);
838 1368
1369 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next;
1372
839 return 1; 1373 return 1;
840} 1374}
841 1375
842static int 1376static int
843coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1377coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844{ 1378{
845 struct coro *coro = (struct coro *)mg->mg_ptr; 1379 struct coro *coro = (struct coro *)mg->mg_ptr;
846 mg->mg_ptr = 0; 1380 mg->mg_ptr = 0;
847 1381
1382 coro->hv = 0;
1383
848 if (--coro->refcnt < 0) 1384 if (--coro->refcnt < 0)
849 { 1385 {
850 coro_state_destroy (coro); 1386 coro_state_destroy (aTHX_ coro);
851 Safefree (coro); 1387 Safefree (coro);
852 } 1388 }
853 1389
854 return 0; 1390 return 0;
855} 1391}
… …
873#else 1409#else
874# define MGf_DUP 0 1410# define MGf_DUP 0
875#endif 1411#endif
876}; 1412};
877 1413
878static struct coro *
879SvSTATE (SV *coro)
880{
881 HV *stash;
882 MAGIC *mg;
883
884 if (SvROK (coro))
885 coro = SvRV (coro);
886
887 stash = SvSTASH (coro);
888 if (stash != coro_stash && stash != coro_state_stash)
889 {
890 /* very slow, but rare, check */
891 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892 croak ("Coro::State object required");
893 }
894
895 mg = SvMAGIC (coro);
896 assert (mg->mg_type == PERL_MAGIC_ext);
897 return (struct coro *)mg->mg_ptr;
898}
899
900static void 1414static void
901prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
902{ 1416{
903 ta->prev = SvSTATE (prev_sv); 1417 ta->prev = SvSTATE (prev_sv);
904 ta->next = SvSTATE (next_sv); 1418 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta);
905} 1420}
906 1421
907static void 1422static void
908api_transfer (SV *prev_sv, SV *next_sv) 1423api_transfer (SV *prev_sv, SV *next_sv)
909{ 1424{
1425 dTHX;
910 struct transfer_args ta; 1426 struct transfer_args ta;
911 1427
912 prepare_transfer (&ta, prev_sv, next_sv); 1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913 TRANSFER (ta); 1429 TRANSFER (ta, 1);
914}
915
916static int
917api_save (SV *coro_sv, int new_save)
918{
919 struct coro *coro = SvSTATE (coro_sv);
920 int old_save = coro->save;
921
922 if (new_save >= 0)
923 coro->save = new_save;
924
925 return old_save;
926} 1430}
927 1431
928/** Coro ********************************************************************/ 1432/** Coro ********************************************************************/
929 1433
930#define PRIO_MAX 3
931#define PRIO_HIGH 1
932#define PRIO_NORMAL 0
933#define PRIO_LOW -1
934#define PRIO_IDLE -3
935#define PRIO_MIN -4
936
937/* for Coro.pm */
938static SV *coro_current;
939static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940static int coro_nready;
941
942static void 1434static void
943coro_enq (SV *coro_sv) 1435coro_enq (pTHX_ SV *coro_sv)
944{ 1436{
945 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946 coro_nready++;
947} 1438}
948 1439
949static SV * 1440static SV *
950coro_deq (int min_prio) 1441coro_deq (pTHX)
951{ 1442{
952 int prio = PRIO_MAX - PRIO_MIN; 1443 int prio;
953 1444
954 min_prio -= PRIO_MIN;
955 if (min_prio < 0)
956 min_prio = 0;
957
958 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
959 if (AvFILLp (coro_ready [prio]) >= 0) 1446 if (AvFILLp (coro_ready [prio]) >= 0)
960 {
961 coro_nready--;
962 return av_shift (coro_ready [prio]); 1447 return av_shift (coro_ready [prio]);
963 }
964 1448
965 return 0; 1449 return 0;
966} 1450}
967 1451
968static int 1452static int
969api_ready (SV *coro_sv) 1453api_ready (SV *coro_sv)
970{ 1454{
1455 dTHX;
971 struct coro *coro; 1456 struct coro *coro;
1457 SV *sv_hook;
1458 void (*xs_hook)(void);
972 1459
973 if (SvROK (coro_sv)) 1460 if (SvROK (coro_sv))
974 coro_sv = SvRV (coro_sv); 1461 coro_sv = SvRV (coro_sv);
975 1462
976 coro = SvSTATE (coro_sv); 1463 coro = SvSTATE (coro_sv);
… …
979 return 0; 1466 return 0;
980 1467
981 coro->flags |= CF_READY; 1468 coro->flags |= CF_READY;
982 1469
983 LOCK; 1470 LOCK;
1471
1472 sv_hook = coro_nready ? 0 : coro_readyhook;
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1474
984 coro_enq (SvREFCNT_inc (coro_sv)); 1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1476 ++coro_nready;
1477
985 UNLOCK; 1478 UNLOCK;
1479
1480 if (sv_hook)
1481 {
1482 dSP;
1483
1484 ENTER;
1485 SAVETMPS;
1486
1487 PUSHMARK (SP);
1488 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD);
1490 SPAGAIN;
1491
1492 FREETMPS;
1493 LEAVE;
1494 }
1495
1496 if (xs_hook)
1497 xs_hook ();
986 1498
987 return 1; 1499 return 1;
988} 1500}
989 1501
990static int 1502static int
991api_is_ready (SV *coro_sv) 1503api_is_ready (SV *coro_sv)
992{ 1504{
1505 dTHX;
993 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1506 return !!(SvSTATE (coro_sv)->flags & CF_READY);
994} 1507}
995 1508
996static void 1509static void
997prepare_schedule (struct transfer_args *ta) 1510prepare_schedule (pTHX_ struct transfer_args *ta)
998{ 1511{
999 SV *prev_sv, *next_sv; 1512 SV *prev_sv, *next_sv;
1000 1513
1001 for (;;) 1514 for (;;)
1002 { 1515 {
1003 LOCK; 1516 LOCK;
1004 next_sv = coro_deq (PRIO_MIN); 1517 next_sv = coro_deq (aTHX);
1005 UNLOCK;
1006 1518
1007 /* nothing to schedule: call the idle handler */ 1519 /* nothing to schedule: call the idle handler */
1008 if (!next_sv) 1520 if (expect_false (!next_sv))
1009 { 1521 {
1010 dSP; 1522 dSP;
1523 UNLOCK;
1011 1524
1012 ENTER; 1525 ENTER;
1013 SAVETMPS; 1526 SAVETMPS;
1014 1527
1015 PUSHMARK (SP); 1528 PUSHMARK (SP);
1016 PUTBACK; 1529 PUTBACK;
1017 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1531 SPAGAIN;
1018 1532
1019 FREETMPS; 1533 FREETMPS;
1020 LEAVE; 1534 LEAVE;
1021 continue; 1535 continue;
1022 } 1536 }
1023 1537
1024 ta->next = SvSTATE (next_sv); 1538 ta->next = SvSTATE (next_sv);
1025 1539
1026 /* cannot transfer to destroyed coros, skip and look for next */ 1540 /* cannot transfer to destroyed coros, skip and look for next */
1027 if (ta->next->flags & CF_DESTROYED) 1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1028 { 1542 {
1543 UNLOCK;
1029 SvREFCNT_dec (next_sv); 1544 SvREFCNT_dec (next_sv);
1545 /* coro_nready is already taken care of by destroy */
1030 continue; 1546 continue;
1031 } 1547 }
1032 1548
1549 --coro_nready;
1550 UNLOCK;
1033 break; 1551 break;
1034 } 1552 }
1035 1553
1036 /* free this only after the transfer */ 1554 /* free this only after the transfer */
1037 prev_sv = SvRV (coro_current); 1555 prev_sv = SvRV (coro_current);
1038 SvRV_set (coro_current, next_sv);
1039 ta->prev = SvSTATE (prev_sv); 1556 ta->prev = SvSTATE (prev_sv);
1040 1557 TRANSFER_CHECK (*ta);
1041 assert (ta->next->flags & CF_READY); 1558 assert (ta->next->flags & CF_READY);
1042 ta->next->flags &= ~CF_READY; 1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv);
1043 1561
1044 LOCK; 1562 LOCK;
1045 free_coro_mortal (); 1563 free_coro_mortal (aTHX);
1046 coro_mortal = prev_sv; 1564 coro_mortal = prev_sv;
1047 UNLOCK; 1565 UNLOCK;
1048} 1566}
1049 1567
1050static void 1568static void
1051prepare_cede (struct transfer_args *ta) 1569prepare_cede (pTHX_ struct transfer_args *ta)
1052{ 1570{
1053 api_ready (coro_current); 1571 api_ready (coro_current);
1054 prepare_schedule (ta); 1572 prepare_schedule (aTHX_ ta);
1055} 1573}
1056 1574
1057static int 1575static int
1058prepare_cede_notself (struct transfer_args *ta) 1576prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059{ 1577{
1060 if (coro_nready) 1578 if (coro_nready)
1061 { 1579 {
1062 SV *prev = SvRV (coro_current); 1580 SV *prev = SvRV (coro_current);
1063 prepare_schedule (ta); 1581 prepare_schedule (aTHX_ ta);
1064 api_ready (prev); 1582 api_ready (prev);
1065 return 1; 1583 return 1;
1066 } 1584 }
1067 else 1585 else
1068 return 0; 1586 return 0;
1069} 1587}
1070 1588
1071static void 1589static void
1072api_schedule (void) 1590api_schedule (void)
1073{ 1591{
1592 dTHX;
1074 struct transfer_args ta; 1593 struct transfer_args ta;
1075 1594
1076 prepare_schedule (&ta); 1595 prepare_schedule (aTHX_ &ta);
1077 TRANSFER (ta); 1596 TRANSFER (ta, 1);
1078} 1597}
1079 1598
1080static int 1599static int
1081api_cede (void) 1600api_cede (void)
1082{ 1601{
1602 dTHX;
1083 struct transfer_args ta; 1603 struct transfer_args ta;
1084 1604
1085 prepare_cede (&ta); 1605 prepare_cede (aTHX_ &ta);
1086 1606
1087 if (ta.prev != ta.next) 1607 if (expect_true (ta.prev != ta.next))
1088 { 1608 {
1089 TRANSFER (ta); 1609 TRANSFER (ta, 1);
1090 return 1; 1610 return 1;
1091 } 1611 }
1092 else 1612 else
1093 return 0; 1613 return 0;
1094} 1614}
1095 1615
1096static int 1616static int
1097api_cede_notself (void) 1617api_cede_notself (void)
1098{ 1618{
1619 dTHX;
1099 struct transfer_args ta; 1620 struct transfer_args ta;
1100 1621
1101 if (prepare_cede_notself (&ta)) 1622 if (prepare_cede_notself (aTHX_ &ta))
1102 { 1623 {
1103 TRANSFER (ta); 1624 TRANSFER (ta, 1);
1104 return 1; 1625 return 1;
1105 } 1626 }
1106 else 1627 else
1107 return 0; 1628 return 0;
1108} 1629}
1109 1630
1631static void
1632api_trace (SV *coro_sv, int flags)
1633{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv);
1636
1637 if (flags & CC_TRACE)
1638 {
1639 if (!coro->cctx)
1640 coro->cctx = cctx_new ();
1641 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack");
1643
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 {
1648 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1649
1650 if (coro->flags & CF_RUNNING)
1651 PL_runops = RUNOPS_DEFAULT;
1652 else
1653 coro->slot->runops = RUNOPS_DEFAULT;
1654 }
1655}
1656
1657#if 0
1658static int
1659coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1660{
1661 AV *padlist;
1662 AV *av = (AV *)mg->mg_obj;
1663
1664 abort ();
1665
1666 return 0;
1667}
1668
1669static MGVTBL coro_gensub_vtbl = {
1670 0, 0, 0, 0,
1671 coro_gensub_free
1672};
1673#endif
1674
1675/*****************************************************************************/
1676/* PerlIO::cede */
1677
1678typedef struct
1679{
1680 PerlIOBuf base;
1681 NV next, every;
1682} PerlIOCede;
1683
1684static IV
1685PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1686{
1687 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1688
1689 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1690 self->next = nvtime () + self->every;
1691
1692 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1693}
1694
1695static SV *
1696PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1697{
1698 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1699
1700 return newSVnv (self->every);
1701}
1702
1703static IV
1704PerlIOCede_flush (pTHX_ PerlIO *f)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 double now = nvtime ();
1708
1709 if (now >= self->next)
1710 {
1711 api_cede ();
1712 self->next = now + self->every;
1713 }
1714
1715 return PerlIOBuf_flush (aTHX_ f);
1716}
1717
1718static PerlIO_funcs PerlIO_cede =
1719{
1720 sizeof(PerlIO_funcs),
1721 "cede",
1722 sizeof(PerlIOCede),
1723 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1724 PerlIOCede_pushed,
1725 PerlIOBuf_popped,
1726 PerlIOBuf_open,
1727 PerlIOBase_binmode,
1728 PerlIOCede_getarg,
1729 PerlIOBase_fileno,
1730 PerlIOBuf_dup,
1731 PerlIOBuf_read,
1732 PerlIOBuf_unread,
1733 PerlIOBuf_write,
1734 PerlIOBuf_seek,
1735 PerlIOBuf_tell,
1736 PerlIOBuf_close,
1737 PerlIOCede_flush,
1738 PerlIOBuf_fill,
1739 PerlIOBase_eof,
1740 PerlIOBase_error,
1741 PerlIOBase_clearerr,
1742 PerlIOBase_setlinebuf,
1743 PerlIOBuf_get_base,
1744 PerlIOBuf_bufsiz,
1745 PerlIOBuf_get_ptr,
1746 PerlIOBuf_get_cnt,
1747 PerlIOBuf_set_ptrcnt,
1748};
1749
1750
1110MODULE = Coro::State PACKAGE = Coro::State 1751MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111 1752
1112PROTOTYPES: DISABLE 1753PROTOTYPES: DISABLE
1113 1754
1114BOOT: 1755BOOT:
1115{ 1756{
1116#ifdef USE_ITHREADS 1757#ifdef USE_ITHREADS
1117 MUTEX_INIT (&coro_mutex); 1758 MUTEX_INIT (&coro_lock);
1118#endif 1759#endif
1119 BOOT_PAGESIZE; 1760 BOOT_PAGESIZE;
1120 1761
1762 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1763 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1764
1765 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1766 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1767 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1768
1769 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1770 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1771 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1772
1121 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1773 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122 1774
1775 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1776 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1777 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1124 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1127 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1778 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128 1779
1129 main_mainstack = PL_mainstack; 1780 main_mainstack = PL_mainstack;
1781 main_top_env = PL_top_env;
1130 1782
1783 while (main_top_env->je_prev)
1784 main_top_env = main_top_env->je_prev;
1785
1131 coroapi.ver = CORO_API_VERSION; 1786 coroapi.ver = CORO_API_VERSION;
1787 coroapi.rev = CORO_API_REVISION;
1132 coroapi.transfer = api_transfer; 1788 coroapi.transfer = api_transfer;
1789
1790 {
1791 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1792
1793 if (!svp) croak ("Time::HiRes is required");
1794 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1795
1796 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1797 }
1133 1798
1134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1799 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1135} 1800}
1136 1801
1137SV * 1802SV *
1138new (char *klass, ...) 1803new (char *klass, ...)
1139 CODE: 1804 CODE:
1140{ 1805{
1141 struct coro *coro; 1806 struct coro *coro;
1807 MAGIC *mg;
1142 HV *hv; 1808 HV *hv;
1143 int i; 1809 int i;
1144 1810
1145 Newz (0, coro, 1, struct coro); 1811 Newz (0, coro, 1, struct coro);
1146 coro->args = newAV (); 1812 coro->args = newAV ();
1147 coro->save = CORO_SAVE_ALL;
1148 coro->flags = CF_NEW; 1813 coro->flags = CF_NEW;
1149 1814
1815 if (coro_first) coro_first->prev = coro;
1816 coro->next = coro_first;
1817 coro_first = coro;
1818
1150 hv = newHV (); 1819 coro->hv = hv = newHV ();
1151 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1820 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1821 mg->mg_flags |= MGf_DUP;
1152 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1822 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153 1823
1824 av_extend (coro->args, items - 1);
1154 for (i = 1; i < items; i++) 1825 for (i = 1; i < items; i++)
1155 av_push (coro->args, newSVsv (ST (i))); 1826 av_push (coro->args, newSVsv (ST (i)));
1156} 1827}
1157 OUTPUT: 1828 OUTPUT:
1158 RETVAL 1829 RETVAL
1159 1830
1160int 1831# these not obviously related functions are all rolled into the same xs
1161save (SV *coro, int new_save = -1) 1832# function to increase chances that they all will call transfer with the same
1162 CODE: 1833# stack offset
1163 RETVAL = api_save (coro, new_save);
1164 OUTPUT:
1165 RETVAL
1166
1167void 1834void
1168_set_stacklevel (...) 1835_set_stacklevel (...)
1169 ALIAS: 1836 ALIAS:
1170 Coro::State::transfer = 1 1837 Coro::State::transfer = 1
1171 Coro::schedule = 2 1838 Coro::schedule = 2
… …
1173 Coro::cede_notself = 4 1840 Coro::cede_notself = 4
1174 CODE: 1841 CODE:
1175{ 1842{
1176 struct transfer_args ta; 1843 struct transfer_args ta;
1177 1844
1845 PUTBACK;
1178 switch (ix) 1846 switch (ix)
1179 { 1847 {
1180 case 0: 1848 case 0:
1181 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1849 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1182 ta.next = 0; 1850 ta.next = 0;
1183 break; 1851 break;
1184 1852
1185 case 1: 1853 case 1:
1186 if (items != 2) 1854 if (items != 2)
1187 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1855 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1188 1856
1189 prepare_transfer (&ta, ST (0), ST (1)); 1857 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190 break; 1858 break;
1191 1859
1192 case 2: 1860 case 2:
1193 prepare_schedule (&ta); 1861 prepare_schedule (aTHX_ &ta);
1194 break; 1862 break;
1195 1863
1196 case 3: 1864 case 3:
1197 prepare_cede (&ta); 1865 prepare_cede (aTHX_ &ta);
1198 break; 1866 break;
1199 1867
1200 case 4: 1868 case 4:
1201 if (!prepare_cede_notself (&ta)) 1869 if (!prepare_cede_notself (aTHX_ &ta))
1202 XSRETURN_EMPTY; 1870 XSRETURN_EMPTY;
1203 1871
1204 break; 1872 break;
1205 } 1873 }
1874 SPAGAIN;
1206 1875
1207 BARRIER; 1876 BARRIER;
1877 PUTBACK;
1208 TRANSFER (ta); 1878 TRANSFER (ta, 0);
1879 SPAGAIN; /* might be the sp of a different coroutine now */
1880 /* be extra careful not to ever do anything after TRANSFER */
1209} 1881}
1210 1882
1211bool 1883bool
1212_destroy (SV *coro_sv) 1884_destroy (SV *coro_sv)
1213 CODE: 1885 CODE:
1214 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1886 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1215 OUTPUT: 1887 OUTPUT:
1216 RETVAL 1888 RETVAL
1217 1889
1218void 1890void
1219_exit (code) 1891_exit (int code)
1220 int code
1221 PROTOTYPE: $ 1892 PROTOTYPE: $
1222 CODE: 1893 CODE:
1223 _exit (code); 1894 _exit (code);
1895
1896int
1897cctx_stacksize (int new_stacksize = 0)
1898 CODE:
1899 RETVAL = cctx_stacksize;
1900 if (new_stacksize)
1901 {
1902 cctx_stacksize = new_stacksize;
1903 ++cctx_gen;
1904 }
1905 OUTPUT:
1906 RETVAL
1907
1908int
1909cctx_max_idle (int max_idle = 0)
1910 CODE:
1911 RETVAL = cctx_max_idle;
1912 if (max_idle > 1)
1913 cctx_max_idle = max_idle;
1914 OUTPUT:
1915 RETVAL
1224 1916
1225int 1917int
1226cctx_count () 1918cctx_count ()
1227 CODE: 1919 CODE:
1228 RETVAL = cctx_count; 1920 RETVAL = cctx_count;
… …
1234 CODE: 1926 CODE:
1235 RETVAL = cctx_idle; 1927 RETVAL = cctx_idle;
1236 OUTPUT: 1928 OUTPUT:
1237 RETVAL 1929 RETVAL
1238 1930
1931void
1932list ()
1933 PPCODE:
1934{
1935 struct coro *coro;
1936 for (coro = coro_first; coro; coro = coro->next)
1937 if (coro->hv)
1938 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1939}
1940
1941void
1942call (Coro::State coro, SV *coderef)
1943 ALIAS:
1944 eval = 1
1945 CODE:
1946{
1947 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1948 {
1949 struct coro temp;
1950
1951 if (!(coro->flags & CF_RUNNING))
1952 {
1953 PUTBACK;
1954 save_perl (aTHX_ &temp);
1955 load_perl (aTHX_ coro);
1956 }
1957
1958 {
1959 dSP;
1960 ENTER;
1961 SAVETMPS;
1962 PUTBACK;
1963 PUSHSTACK;
1964 PUSHMARK (SP);
1965
1966 if (ix)
1967 eval_sv (coderef, 0);
1968 else
1969 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1970
1971 POPSTACK;
1972 SPAGAIN;
1973 FREETMPS;
1974 LEAVE;
1975 PUTBACK;
1976 }
1977
1978 if (!(coro->flags & CF_RUNNING))
1979 {
1980 save_perl (aTHX_ coro);
1981 load_perl (aTHX_ &temp);
1982 SPAGAIN;
1983 }
1984 }
1985}
1986
1987SV *
1988is_ready (Coro::State coro)
1989 PROTOTYPE: $
1990 ALIAS:
1991 is_ready = CF_READY
1992 is_running = CF_RUNNING
1993 is_new = CF_NEW
1994 is_destroyed = CF_DESTROYED
1995 CODE:
1996 RETVAL = boolSV (coro->flags & ix);
1997 OUTPUT:
1998 RETVAL
1999
2000void
2001api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2002
2003SV *
2004has_cctx (Coro::State coro)
2005 PROTOTYPE: $
2006 CODE:
2007 RETVAL = boolSV (!!coro->cctx);
2008 OUTPUT:
2009 RETVAL
2010
2011int
2012is_traced (Coro::State coro)
2013 PROTOTYPE: $
2014 CODE:
2015 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2016 OUTPUT:
2017 RETVAL
2018
2019UV
2020rss (Coro::State coro)
2021 PROTOTYPE: $
2022 ALIAS:
2023 usecount = 1
2024 CODE:
2025 switch (ix)
2026 {
2027 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2028 case 1: RETVAL = coro->usecount; break;
2029 }
2030 OUTPUT:
2031 RETVAL
2032
2033void
2034force_cctx ()
2035 CODE:
2036 struct coro *coro = SvSTATE (coro_current);
2037 coro->cctx->idle_sp = 0;
2038
2039void
2040swap_defsv (Coro::State self)
2041 PROTOTYPE: $
2042 ALIAS:
2043 swap_defav = 1
2044 CODE:
2045 if (!self->slot)
2046 croak ("cannot swap state with coroutine that has no saved state");
2047 else
2048 {
2049 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2050 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2051
2052 SV *tmp = *src; *src = *dst; *dst = tmp;
2053 }
2054
1239MODULE = Coro::State PACKAGE = Coro 2055MODULE = Coro::State PACKAGE = Coro
1240 2056
1241BOOT: 2057BOOT:
1242{ 2058{
1243 int i; 2059 int i;
1244 2060
2061 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2062 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2063 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2064
2065 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2066 SvREADONLY_on (coro_current);
2067
1245 coro_stash = gv_stashpv ("Coro", TRUE); 2068 coro_stash = gv_stashpv ("Coro", TRUE);
1246 2069
1247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2070 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2071 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1249 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2072 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1250 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2073 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1251 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2074 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1252 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2075 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1253 2076
1254 coro_current = get_sv ("Coro::current", FALSE);
1255 SvREADONLY_on (coro_current);
1256
1257 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2077 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1258 coro_ready[i] = newAV (); 2078 coro_ready[i] = newAV ();
1259 2079
1260 { 2080 {
1261 SV *sv = perl_get_sv("Coro::API", 1); 2081 SV *sv = perl_get_sv ("Coro::API", TRUE);
2082 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1262 2083
1263 coroapi.schedule = api_schedule; 2084 coroapi.schedule = api_schedule;
1264 coroapi.save = api_save;
1265 coroapi.cede = api_cede; 2085 coroapi.cede = api_cede;
1266 coroapi.cede_notself = api_cede_notself; 2086 coroapi.cede_notself = api_cede_notself;
1267 coroapi.ready = api_ready; 2087 coroapi.ready = api_ready;
1268 coroapi.is_ready = api_is_ready; 2088 coroapi.is_ready = api_is_ready;
1269 coroapi.nready = &coro_nready; 2089 coroapi.nready = &coro_nready;
… …
1278void 2098void
1279_set_current (SV *current) 2099_set_current (SV *current)
1280 PROTOTYPE: $ 2100 PROTOTYPE: $
1281 CODE: 2101 CODE:
1282 SvREFCNT_dec (SvRV (coro_current)); 2102 SvREFCNT_dec (SvRV (coro_current));
1283 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2103 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2104
2105void
2106_set_readyhook (SV *hook)
2107 PROTOTYPE: $
2108 CODE:
2109 LOCK;
2110 SvREFCNT_dec (coro_readyhook);
2111 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2112 UNLOCK;
1284 2113
1285int 2114int
1286prio (Coro::State coro, int newprio = 0) 2115prio (Coro::State coro, int newprio = 0)
1287 ALIAS: 2116 ALIAS:
1288 nice = 1 2117 nice = 1
… …
1310 CODE: 2139 CODE:
1311 RETVAL = boolSV (api_ready (self)); 2140 RETVAL = boolSV (api_ready (self));
1312 OUTPUT: 2141 OUTPUT:
1313 RETVAL 2142 RETVAL
1314 2143
1315SV *
1316is_ready (SV *self)
1317 PROTOTYPE: $
1318 CODE:
1319 RETVAL = boolSV (api_is_ready (self));
1320 OUTPUT:
1321 RETVAL
1322
1323int 2144int
1324nready (...) 2145nready (...)
1325 PROTOTYPE: 2146 PROTOTYPE:
1326 CODE: 2147 CODE:
1327 RETVAL = coro_nready; 2148 RETVAL = coro_nready;
1328 OUTPUT: 2149 OUTPUT:
1329 RETVAL 2150 RETVAL
1330 2151
2152void
2153throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$
2155 CODE:
2156 SvREFCNT_dec (self->throw);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2158
2159# for async_pool speedup
2160void
2161_pool_1 (SV *cb)
2162 CODE:
2163{
2164 struct coro *coro = SvSTATE (coro_current);
2165 HV *hv = (HV *)SvRV (coro_current);
2166 AV *defav = GvAV (PL_defgv);
2167 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2168 AV *invoke_av;
2169 int i, len;
2170
2171 if (!invoke)
2172 {
2173 SV *old = PL_diehook;
2174 PL_diehook = 0;
2175 SvREFCNT_dec (old);
2176 croak ("\3async_pool terminate\2\n");
2177 }
2178
2179 SvREFCNT_dec (coro->saved_deffh);
2180 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2181
2182 hv_store (hv, "desc", sizeof ("desc") - 1,
2183 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2184
2185 invoke_av = (AV *)SvRV (invoke);
2186 len = av_len (invoke_av);
2187
2188 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2189
2190 if (len > 0)
2191 {
2192 av_fill (defav, len - 1);
2193 for (i = 0; i < len; ++i)
2194 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2195 }
2196
2197 SvREFCNT_dec (invoke);
2198}
2199
2200void
2201_pool_2 (SV *cb)
2202 CODE:
2203{
2204 struct coro *coro = SvSTATE (coro_current);
2205
2206 sv_setsv (cb, &PL_sv_undef);
2207
2208 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2209 coro->saved_deffh = 0;
2210
2211 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2212 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2213 {
2214 SV *old = PL_diehook;
2215 PL_diehook = 0;
2216 SvREFCNT_dec (old);
2217 croak ("\3async_pool terminate\2\n");
2218 }
2219
2220 av_clear (GvAV (PL_defgv));
2221 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2222 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2223
2224 coro->prio = 0;
2225
2226 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2227 api_trace (coro_current, 0);
2228
2229 av_push (av_async_pool, newSVsv (coro_current));
2230}
2231
2232#if 0
2233
2234void
2235_generator_call (...)
2236 PROTOTYPE: @
2237 PPCODE:
2238 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2239 xxxx
2240 abort ();
2241
2242SV *
2243gensub (SV *sub, ...)
2244 PROTOTYPE: &;@
2245 CODE:
2246{
2247 struct coro *coro;
2248 MAGIC *mg;
2249 CV *xcv;
2250 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2251 int i;
2252
2253 CvGV (ncv) = CvGV (cv);
2254 CvFILE (ncv) = CvFILE (cv);
2255
2256 Newz (0, coro, 1, struct coro);
2257 coro->args = newAV ();
2258 coro->flags = CF_NEW;
2259
2260 av_extend (coro->args, items - 1);
2261 for (i = 1; i < items; i++)
2262 av_push (coro->args, newSVsv (ST (i)));
2263
2264 CvISXSUB_on (ncv);
2265 CvXSUBANY (ncv).any_ptr = (void *)coro;
2266
2267 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2268
2269 CvXSUB (ncv) = CvXSUB (xcv);
2270 CvANON_on (ncv);
2271
2272 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2273 RETVAL = newRV_noinc ((SV *)ncv);
2274}
2275 OUTPUT:
2276 RETVAL
2277
2278#endif
2279
2280
1331MODULE = Coro::State PACKAGE = Coro::AIO 2281MODULE = Coro::State PACKAGE = Coro::AIO
1332 2282
1333SV * 2283void
1334_get_state () 2284_get_state (SV *self)
1335 CODE: 2285 PPCODE:
1336{ 2286{
1337 struct io_state *data; 2287 AV *defav = GvAV (PL_defgv);
1338 2288 AV *av = newAV ();
2289 int i;
1339 RETVAL = newSV (sizeof (struct io_state)); 2290 SV *data_sv = newSV (sizeof (struct io_state));
1340 data = (struct io_state *)SvPVX (RETVAL); 2291 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1341 SvCUR_set (RETVAL, sizeof (struct io_state)); 2292 SvCUR_set (data_sv, sizeof (struct io_state));
1342 SvPOK_only (RETVAL); 2293 SvPOK_only (data_sv);
1343 2294
1344 data->errorno = errno; 2295 data->errorno = errno;
1345 data->laststype = PL_laststype; 2296 data->laststype = PL_laststype;
1346 data->laststatval = PL_laststatval; 2297 data->laststatval = PL_laststatval;
1347 data->statcache = PL_statcache; 2298 data->statcache = PL_statcache;
2299
2300 av_extend (av, AvFILLp (defav) + 1 + 1);
2301
2302 for (i = 0; i <= AvFILLp (defav); ++i)
2303 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2304
2305 av_push (av, data_sv);
2306
2307 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2308
2309 api_ready (self);
1348} 2310}
1349 OUTPUT:
1350 RETVAL
1351 2311
1352void 2312void
1353_set_state (char *data_) 2313_set_state (SV *state)
1354 PROTOTYPE: $ 2314 PROTOTYPE: $
1355 CODE: 2315 PPCODE:
1356{ 2316{
1357 struct io_state *data = (void *)data_; 2317 AV *av = (AV *)SvRV (state);
2318 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2319 int i;
1358 2320
1359 errno = data->errorno; 2321 errno = data->errorno;
1360 PL_laststype = data->laststype; 2322 PL_laststype = data->laststype;
1361 PL_laststatval = data->laststatval; 2323 PL_laststatval = data->laststatval;
1362 PL_statcache = data->statcache; 2324 PL_statcache = data->statcache;
1363}
1364 2325
2326 EXTEND (SP, AvFILLp (av));
2327 for (i = 0; i < AvFILLp (av); ++i)
2328 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2329}
2330
2331
2332MODULE = Coro::State PACKAGE = Coro::AnyEvent
2333
2334BOOT:
2335 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2336
2337SV *
2338_schedule (...)
2339 PROTOTYPE: @
2340 CODE:
2341{
2342 static int incede;
2343
2344 api_cede_notself ();
2345
2346 ++incede;
2347 while (coro_nready >= incede && api_cede ())
2348 ;
2349
2350 sv_setsv (sv_activity, &PL_sv_undef);
2351 if (coro_nready >= incede)
2352 {
2353 PUSHMARK (SP);
2354 PUTBACK;
2355 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2356 SPAGAIN;
2357 }
2358
2359 --incede;
2360}
2361
2362
2363MODULE = Coro::State PACKAGE = PerlIO::cede
2364
2365BOOT:
2366 PerlIO_define_layer (aTHX_ &PerlIO_cede);

Diff Legend

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