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Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.250 by root, Wed Oct 22 16:34:07 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
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13#define PERL_VERSION_ATLEAST(a,b,c) \
14 (PERL_REVISION > (a) \
15 || (PERL_REVISION == (a) \
16 && (PERL_VERSION > (b) \
17 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19#if !PERL_VERSION_ATLEAST (5,6,0)
20# ifndef PL_ppaddr
21# define PL_ppaddr ppaddr
22# endif
23# ifndef call_sv
24# define call_sv perl_call_sv
25# endif
26# ifndef get_sv
27# define get_sv perl_get_sv
28# endif
29# ifndef get_cv
30# define get_cv perl_get_cv
31# endif
32# ifndef IS_PADGV
33# define IS_PADGV(v) 0
34# endif
35# ifndef IS_PADCONST
36# define IS_PADCONST(v) 0
37# endif
38#endif
39 12
40#include <stdio.h> 13#include <stdio.h>
41#include <errno.h> 14#include <errno.h>
15#include <assert.h>
42 16
43#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
44# undef STACKGUARD 18# undef setjmp
45#endif 19# undef longjmp
46 20# undef _exit
47#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
48# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
49#endif 24#endif
50 25
51#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
52# include <unistd.h> 27# include <unistd.h>
53# include <sys/mman.h> 28# include <sys/mman.h>
… …
69#else 44#else
70# define PAGESIZE 0 45# define PAGESIZE 0
71# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
72#endif 47#endif
73 48
74/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
75 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
76 * and should be unique. */ 51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.8.8 */
87#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0
89#endif
90#ifndef newSV
91# define newSV(l) NEWSV(0,l)
92#endif
93#ifndef SvREFCNT_inc_NN
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif
101
102/* 5.8.7 */
103#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v)
105#endif
106
107#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
108# undef CORO_STACKGUARD
109#endif
110
111#ifndef CORO_STACKGUARD
112# define CORO_STACKGUARD 0
113#endif
114
115/* prefer perl internal functions over our own? */
116#ifndef CORO_PREFER_PERL_FUNCTIONS
117# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif
119
120/* The next macros try to return the current stack pointer, in an as
121 * portable way as possible. */
77#define dSTACKLEVEL int stacklevel 122#define dSTACKLEVEL volatile char stacklevel
78#define STACKLEVEL ((void *)&stacklevel) 123#define STACKLEVEL ((void *)&stacklevel)
79 124
80#define IN_DESTRUCT (PL_main_cv == Nullcv) 125#define IN_DESTRUCT (PL_main_cv == Nullcv)
81 126
82#if __GNUC__ >= 3 127#if __GNUC__ >= 3
83# define attribute(x) __attribute__(x) 128# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value))
84#else 131#else
85# define attribute(x) 132# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr)
86#endif 135#endif
136
137#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1)
87 139
88#define NOINLINE attribute ((noinline)) 140#define NOINLINE attribute ((noinline))
89 141
90#include "CoroAPI.h" 142#include "CoroAPI.h"
91
92#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93 143
94#ifdef USE_ITHREADS 144#ifdef USE_ITHREADS
95static perl_mutex coro_mutex; 145static perl_mutex coro_mutex;
96# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98#else 148#else
99# define LOCK (void)0 149# define LOCK (void)0
100# define UNLOCK (void)0 150# define UNLOCK (void)0
101#endif 151#endif
102 152
153/* helper storage struct for Coro::AIO */
154struct io_state
155{
156 AV *res;
157 int errorno;
158 I32 laststype;
159 int laststatval;
160 Stat_t statcache;
161};
162
163static double (*nvtime)(); /* so why doesn't it take void? */
164
165static size_t coro_stacksize = CORO_STACKSIZE;
103static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
104static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env;
105static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
106static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed after next transfer */
171
172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177
178/* async_pool helper stuff */
179static SV *sv_pool_rss;
180static SV *sv_pool_size;
181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
107 185
108static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
109static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
188
189enum {
190 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196};
110 197
111/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
112typedef struct coro_cctx { 199typedef struct coro_cctx {
113 struct coro_cctx *next; 200 struct coro_cctx *next;
114 201
115 /* the stack */ 202 /* the stack */
116 void *sptr; 203 void *sptr;
117 long ssize; /* positive == mmap, otherwise malloc */ 204 size_t ssize;
118 205
119 /* cpu state */ 206 /* cpu state */
120 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
121 JMPENV *top_env; 209 JMPENV *top_env;
122 coro_context cctx; 210 coro_context cctx;
123 211
124#if USE_VALGRIND 212#if CORO_USE_VALGRIND
125 int valgrind_id; 213 int valgrind_id;
126#endif 214#endif
215 unsigned char flags;
127} coro_cctx; 216} coro_cctx;
217
218enum {
219 CF_RUNNING = 0x0001, /* coroutine is running */
220 CF_READY = 0x0002, /* coroutine is ready */
221 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223};
224
225/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct {
227 SV *defsv;
228 AV *defav;
229 SV *errsv;
230 SV *irsgv;
231#define VAR(name,type) type name;
232# include "state.h"
233#undef VAR
234} perl_slots;
235
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
128 237
129/* this is a structure representing a perl-level coroutine */ 238/* this is a structure representing a perl-level coroutine */
130struct coro { 239struct coro {
131 /* the c coroutine allocated to this perl coroutine, if any */ 240 /* the c coroutine allocated to this perl coroutine, if any */
132 coro_cctx *cctx; 241 coro_cctx *cctx;
133 242
243 /* process data */
244 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */
246
134 /* data associated with this coroutine (initial args) */ 247 AV *args; /* data associated with this coroutine (initial args) */
135 AV *args; 248 int refcnt; /* coroutines are refcounted, yes */
136 int refcnt; 249 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */
137 251
138 /* optionally saved, might be zero */ 252 /* statistics */
139 AV *defav; 253 int usecount; /* number of transfers to this coro */
140 SV *defsv;
141 SV *errsv;
142
143#define VAR(name,type) type name;
144# include "state.h"
145#undef VAR
146 254
147 /* coro process data */ 255 /* coro process data */
148 int prio; 256 int prio;
257 SV *throw; /* exception to be thrown */
258
259 /* async_pool */
260 SV *saved_deffh;
261
262 /* linked list */
263 struct coro *next, *prev;
149}; 264};
150 265
151typedef struct coro *Coro__State; 266typedef struct coro *Coro__State;
152typedef struct coro *Coro__State_or_hashref; 267typedef struct coro *Coro__State_or_hashref;
153 268
269/** Coro ********************************************************************/
270
271#define PRIO_MAX 3
272#define PRIO_HIGH 1
273#define PRIO_NORMAL 0
274#define PRIO_LOW -1
275#define PRIO_IDLE -3
276#define PRIO_MIN -4
277
278/* for Coro.pm */
279static SV *coro_current;
280static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
282static int coro_nready;
283static struct coro *coro_first;
284
285/** lowlevel stuff **********************************************************/
286
287static SV *
288coro_get_sv (pTHX_ const char *name, int create)
289{
290#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_sv (name, create);
293#endif
294 return get_sv (name, create);
295}
296
154static AV * 297static AV *
298coro_get_av (pTHX_ const char *name, int create)
299{
300#if PERL_VERSION_ATLEAST (5,10,0)
301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
302 get_av (name, create);
303#endif
304 return get_av (name, create);
305}
306
307static HV *
308coro_get_hv (pTHX_ const char *name, int create)
309{
310#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_hv (name, create);
313#endif
314 return get_hv (name, create);
315}
316
317static AV *
155coro_clone_padlist (CV *cv) 318coro_clone_padlist (pTHX_ CV *cv)
156{ 319{
157 AV *padlist = CvPADLIST (cv); 320 AV *padlist = CvPADLIST (cv);
158 AV *newpadlist, *newpad; 321 AV *newpadlist, *newpad;
159 322
160 newpadlist = newAV (); 323 newpadlist = newAV ();
161 AvREAL_off (newpadlist); 324 AvREAL_off (newpadlist);
162#if PERL_VERSION_ATLEAST (5,9,0) 325#if PERL_VERSION_ATLEAST (5,10,0)
163 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 326 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
164#else 327#else
165 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 328 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
166#endif 329#endif
167 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 330 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
168 --AvFILLp (padlist); 331 --AvFILLp (padlist);
169 332
170 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 333 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
171 av_store (newpadlist, 1, (SV *)newpad); 334 av_store (newpadlist, 1, (SV *)newpad);
172 335
173 return newpadlist; 336 return newpadlist;
174} 337}
175 338
176static void 339static void
177free_padlist (AV *padlist) 340free_padlist (pTHX_ AV *padlist)
178{ 341{
179 /* may be during global destruction */ 342 /* may be during global destruction */
180 if (SvREFCNT (padlist)) 343 if (SvREFCNT (padlist))
181 { 344 {
182 I32 i = AvFILLp (padlist); 345 I32 i = AvFILLp (padlist);
… …
203 AV *padlist; 366 AV *padlist;
204 AV *av = (AV *)mg->mg_obj; 367 AV *av = (AV *)mg->mg_obj;
205 368
206 /* casting is fun. */ 369 /* casting is fun. */
207 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 370 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
208 free_padlist (padlist); 371 free_padlist (aTHX_ padlist);
209 372
210 SvREFCNT_dec (av); 373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
211 374
212 return 0; 375 return 0;
213} 376}
214 377
215#define PERL_MAGIC_coro PERL_MAGIC_ext 378#define CORO_MAGIC_type_cv PERL_MAGIC_ext
379#define CORO_MAGIC_type_state PERL_MAGIC_ext
216 380
217static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 381static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0,
383 coro_cv_free
384};
218 385
219#define CORO_MAGIC(cv) \ 386#define CORO_MAGIC(sv,type) \
220 SvMAGIC (cv) \ 387 SvMAGIC (sv) \
221 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 388 ? SvMAGIC (sv)->mg_type == type \
222 ? SvMAGIC (cv) \ 389 ? SvMAGIC (sv) \
223 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 390 : mg_find (sv, type) \
224 : 0 391 : 0
392
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
395
396static struct coro *
397SvSTATE_ (pTHX_ SV *coro)
398{
399 HV *stash;
400 MAGIC *mg;
401
402 if (SvROK (coro))
403 coro = SvRV (coro);
404
405 if (expect_false (SvTYPE (coro) != SVt_PVHV))
406 croak ("Coro::State object required");
407
408 stash = SvSTASH (coro);
409 if (expect_false (stash != coro_stash && stash != coro_state_stash))
410 {
411 /* very slow, but rare, check */
412 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
413 croak ("Coro::State object required");
414 }
415
416 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr;
418}
419
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
225 421
226/* the next two functions merely cache the padlists */ 422/* the next two functions merely cache the padlists */
227static void 423static void
228get_padlist (CV *cv) 424get_padlist (pTHX_ CV *cv)
229{ 425{
230 MAGIC *mg = CORO_MAGIC (cv); 426 MAGIC *mg = CORO_MAGIC_cv (cv);
231 AV *av; 427 AV *av;
232 428
233 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 429 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
234 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 430 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235 else 431 else
236 { 432 {
237#if 0 433#if CORO_PREFER_PERL_FUNCTIONS
238 /* this is probably cleaner, but also slower? */ 434 /* this is probably cleaner? but also slower! */
435 /* in practise, it seems to be less stable */
239 CV *cp = Perl_cv_clone (cv); 436 CV *cp = Perl_cv_clone (cv);
240 CvPADLIST (cv) = CvPADLIST (cp); 437 CvPADLIST (cv) = CvPADLIST (cp);
241 CvPADLIST (cp) = 0; 438 CvPADLIST (cp) = 0;
242 SvREFCNT_dec (cp); 439 SvREFCNT_dec (cp);
243#else 440#else
244 CvPADLIST (cv) = coro_clone_padlist (cv); 441 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245#endif 442#endif
246 } 443 }
247} 444}
248 445
249static void 446static void
250put_padlist (CV *cv) 447put_padlist (pTHX_ CV *cv)
251{ 448{
252 MAGIC *mg = CORO_MAGIC (cv); 449 MAGIC *mg = CORO_MAGIC_cv (cv);
253 AV *av; 450 AV *av;
254 451
255 if (!mg) 452 if (expect_false (!mg))
256 { 453 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
257 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
258 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
259 mg->mg_virtual = &vtbl_coro;
260 mg->mg_obj = (SV *)newAV ();
261 }
262 454
263 av = (AV *)mg->mg_obj; 455 av = (AV *)mg->mg_obj;
264 456
265 if (AvFILLp (av) >= AvMAX (av)) 457 if (expect_false (AvFILLp (av) >= AvMAX (av)))
266 av_extend (av, AvMAX (av) + 1); 458 av_extend (av, AvMAX (av) + 1);
267 459
268 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 460 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269} 461}
270 462
271#define SB do { 463/** load & save, init *******************************************************/
272#define SE } while (0)
273
274#define LOAD(state) load_state((state));
275#define SAVE(state,flags) save_state((state),(flags));
276
277#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
278 464
279static void 465static void
280load_state(Coro__State c) 466load_perl (pTHX_ Coro__State c)
281{ 467{
468 perl_slots *slot = c->slot;
469 c->slot = 0;
470
471 PL_mainstack = c->mainstack;
472
473 GvSV (PL_defgv) = slot->defsv;
474 GvAV (PL_defgv) = slot->defav;
475 GvSV (PL_errgv) = slot->errsv;
476 GvSV (irsgv) = slot->irsgv;
477
282#define VAR(name,type) PL_ ## name = c->name; 478 #define VAR(name,type) PL_ ## name = slot->name;
283# include "state.h" 479 # include "state.h"
284#undef VAR 480 #undef VAR
285
286 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
289 481
290 { 482 {
291 dSP; 483 dSP;
484
292 CV *cv; 485 CV *cv;
293 486
294 /* now do the ugly restore mess */ 487 /* now do the ugly restore mess */
295 while ((cv = (CV *)POPs)) 488 while (expect_true (cv = (CV *)POPs))
296 { 489 {
297 put_padlist (cv); /* mark this padlist as available */ 490 put_padlist (aTHX_ cv); /* mark this padlist as available */
298 CvDEPTH (cv) = PTR2IV (POPs); 491 CvDEPTH (cv) = PTR2IV (POPs);
299 CvPADLIST (cv) = (AV *)POPs; 492 CvPADLIST (cv) = (AV *)POPs;
300 } 493 }
301 494
302 PUTBACK; 495 PUTBACK;
303 } 496 }
304} 497}
305 498
306static void 499static void
307save_state(Coro__State c, int flags) 500save_perl (pTHX_ Coro__State c)
308{ 501{
309 { 502 {
310 dSP; 503 dSP;
311 I32 cxix = cxstack_ix; 504 I32 cxix = cxstack_ix;
312 PERL_CONTEXT *ccstk = cxstack; 505 PERL_CONTEXT *ccstk = cxstack;
… …
315 /* 508 /*
316 * the worst thing you can imagine happens first - we have to save 509 * the worst thing you can imagine happens first - we have to save
317 * (and reinitialize) all cv's in the whole callchain :( 510 * (and reinitialize) all cv's in the whole callchain :(
318 */ 511 */
319 512
320 PUSHs (Nullsv); 513 XPUSHs (Nullsv);
321 /* this loop was inspired by pp_caller */ 514 /* this loop was inspired by pp_caller */
322 for (;;) 515 for (;;)
323 { 516 {
324 while (cxix >= 0) 517 while (expect_true (cxix >= 0))
325 { 518 {
326 PERL_CONTEXT *cx = &ccstk[cxix--]; 519 PERL_CONTEXT *cx = &ccstk[cxix--];
327 520
328 if (CxTYPE(cx) == CXt_SUB) 521 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
329 { 522 {
330 CV *cv = cx->blk_sub.cv; 523 CV *cv = cx->blk_sub.cv;
331 524
332 if (CvDEPTH (cv)) 525 if (expect_true (CvDEPTH (cv)))
333 { 526 {
334 EXTEND (SP, 3); 527 EXTEND (SP, 3);
335
336 PUSHs ((SV *)CvPADLIST(cv)); 528 PUSHs ((SV *)CvPADLIST (cv));
337 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 529 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
338 PUSHs ((SV *)cv); 530 PUSHs ((SV *)cv);
339 531
340 CvDEPTH (cv) = 0; 532 CvDEPTH (cv) = 0;
341 get_padlist (cv); 533 get_padlist (aTHX_ cv);
342 } 534 }
343 } 535 }
344#ifdef CXt_FORMAT
345 else if (CxTYPE(cx) == CXt_FORMAT)
346 {
347 /* I never used formats, so how should I know how these are implemented? */
348 /* my bold guess is as a simple, plain sub... */
349 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350 }
351#endif
352 } 536 }
353 537
354 if (top_si->si_type == PERLSI_MAIN) 538 if (expect_true (top_si->si_type == PERLSI_MAIN))
355 break; 539 break;
356 540
357 top_si = top_si->si_prev; 541 top_si = top_si->si_prev;
358 ccstk = top_si->si_cxstack; 542 ccstk = top_si->si_cxstack;
359 cxix = top_si->si_cxix; 543 cxix = top_si->si_cxix;
360 } 544 }
361 545
362 PUTBACK; 546 PUTBACK;
363 } 547 }
364 548
365 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 549 /* allocate some space on the context stack for our purposes */
366 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 550 /* we manually unroll here, as usually 2 slots is enough */
367 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 551 if (SLOT_COUNT >= 1) CXINC;
552 if (SLOT_COUNT >= 2) CXINC;
553 if (SLOT_COUNT >= 3) CXINC;
554 {
555 int i;
556 for (i = 3; i < SLOT_COUNT; ++i)
557 CXINC;
558 }
559 cxstack_ix -= SLOT_COUNT; /* undo allocation */
368 560
561 c->mainstack = PL_mainstack;
562
563 {
564 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
565
566 slot->defav = GvAV (PL_defgv);
567 slot->defsv = DEFSV;
568 slot->errsv = ERRSV;
569 slot->irsgv = GvSV (irsgv);
570
369#define VAR(name,type)c->name = PL_ ## name; 571 #define VAR(name,type) slot->name = PL_ ## name;
370# include "state.h" 572 # include "state.h"
371#undef VAR 573 #undef VAR
574 }
372} 575}
373 576
374/* 577/*
375 * allocate various perl stacks. This is an exact copy 578 * allocate various perl stacks. This is an exact copy
376 * of perl.c:init_stacks, except that it uses less memory 579 * of perl.c:init_stacks, except that it uses less memory
377 * on the (sometimes correct) assumption that coroutines do 580 * on the (sometimes correct) assumption that coroutines do
378 * not usually need a lot of stackspace. 581 * not usually need a lot of stackspace.
379 */ 582 */
583#if CORO_PREFER_PERL_FUNCTIONS
584# define coro_init_stacks init_stacks
585#else
380static void 586static void
381coro_init_stacks () 587coro_init_stacks (pTHX)
382{ 588{
383 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 589 PL_curstackinfo = new_stackinfo(32, 8);
384 PL_curstackinfo->si_type = PERLSI_MAIN; 590 PL_curstackinfo->si_type = PERLSI_MAIN;
385 PL_curstack = PL_curstackinfo->si_stack; 591 PL_curstack = PL_curstackinfo->si_stack;
386 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 592 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387 593
388 PL_stack_base = AvARRAY(PL_curstack); 594 PL_stack_base = AvARRAY(PL_curstack);
389 PL_stack_sp = PL_stack_base; 595 PL_stack_sp = PL_stack_base;
390 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 596 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391 597
392 New(50,PL_tmps_stack,96,SV*); 598 New(50,PL_tmps_stack,32,SV*);
393 PL_tmps_floor = -1; 599 PL_tmps_floor = -1;
394 PL_tmps_ix = -1; 600 PL_tmps_ix = -1;
395 PL_tmps_max = 96; 601 PL_tmps_max = 32;
396 602
397 New(54,PL_markstack,16,I32); 603 New(54,PL_markstack,16,I32);
398 PL_markstack_ptr = PL_markstack; 604 PL_markstack_ptr = PL_markstack;
399 PL_markstack_max = PL_markstack + 16; 605 PL_markstack_max = PL_markstack + 16;
400 606
401#ifdef SET_MARK_OFFSET 607#ifdef SET_MARK_OFFSET
402 SET_MARK_OFFSET; 608 SET_MARK_OFFSET;
403#endif 609#endif
404 610
405 New(54,PL_scopestack,16,I32); 611 New(54,PL_scopestack,8,I32);
406 PL_scopestack_ix = 0; 612 PL_scopestack_ix = 0;
407 PL_scopestack_max = 16; 613 PL_scopestack_max = 8;
408 614
409 New(54,PL_savestack,96,ANY); 615 New(54,PL_savestack,24,ANY);
410 PL_savestack_ix = 0; 616 PL_savestack_ix = 0;
411 PL_savestack_max = 96; 617 PL_savestack_max = 24;
412 618
413#if !PERL_VERSION_ATLEAST (5,9,0) 619#if !PERL_VERSION_ATLEAST (5,10,0)
414 New(54,PL_retstack,8,OP*); 620 New(54,PL_retstack,4,OP*);
415 PL_retstack_ix = 0; 621 PL_retstack_ix = 0;
416 PL_retstack_max = 8; 622 PL_retstack_max = 4;
417#endif 623#endif
418} 624}
625#endif
419 626
420/* 627/*
421 * destroy the stacks, the callchain etc... 628 * destroy the stacks, the callchain etc...
422 */ 629 */
423static void 630static void
424coro_destroy_stacks () 631coro_destroy_stacks (pTHX)
425{ 632{
426 if (!IN_DESTRUCT)
427 {
428 /* is this ugly, I ask? */
429 LEAVE_SCOPE (0);
430
431 /* sure it is, but more important: is it correct?? :/ */
432 FREETMPS;
433
434 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
435 }
436
437 while (PL_curstackinfo->si_next) 633 while (PL_curstackinfo->si_next)
438 PL_curstackinfo = PL_curstackinfo->si_next; 634 PL_curstackinfo = PL_curstackinfo->si_next;
439 635
440 while (PL_curstackinfo) 636 while (PL_curstackinfo)
441 { 637 {
442 PERL_SI *p = PL_curstackinfo->si_prev; 638 PERL_SI *p = PL_curstackinfo->si_prev;
443 639
444 { /*D*//*remove*/
445 dSP;
446 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447 PUTBACK; /* possibly superfluous */
448 }
449
450 if (!IN_DESTRUCT) 640 if (!IN_DESTRUCT)
451 {
452 dounwind (-1);/*D*//*remove*/
453 SvREFCNT_dec (PL_curstackinfo->si_stack); 641 SvREFCNT_dec (PL_curstackinfo->si_stack);
454 }
455 642
456 Safefree (PL_curstackinfo->si_cxstack); 643 Safefree (PL_curstackinfo->si_cxstack);
457 Safefree (PL_curstackinfo); 644 Safefree (PL_curstackinfo);
458 PL_curstackinfo = p; 645 PL_curstackinfo = p;
459 } 646 }
460 647
461 Safefree (PL_tmps_stack); 648 Safefree (PL_tmps_stack);
462 Safefree (PL_markstack); 649 Safefree (PL_markstack);
463 Safefree (PL_scopestack); 650 Safefree (PL_scopestack);
464 Safefree (PL_savestack); 651 Safefree (PL_savestack);
465#if !PERL_VERSION_ATLEAST (5,9,0) 652#if !PERL_VERSION_ATLEAST (5,10,0)
466 Safefree (PL_retstack); 653 Safefree (PL_retstack);
467#endif 654#endif
468} 655}
469 656
657static size_t
658coro_rss (pTHX_ struct coro *coro)
659{
660 size_t rss = sizeof (*coro);
661
662 if (coro->mainstack)
663 {
664 perl_slots tmp_slot;
665 perl_slots *slot;
666
667 if (coro->flags & CF_RUNNING)
668 {
669 slot = &tmp_slot;
670
671 #define VAR(name,type) slot->name = PL_ ## name;
672 # include "state.h"
673 #undef VAR
674 }
675 else
676 slot = coro->slot;
677
678 if (slot)
679 {
680 rss += sizeof (slot->curstackinfo);
681 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
682 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
683 rss += slot->tmps_max * sizeof (SV *);
684 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
685 rss += slot->scopestack_max * sizeof (I32);
686 rss += slot->savestack_max * sizeof (ANY);
687
688#if !PERL_VERSION_ATLEAST (5,10,0)
689 rss += slot->retstack_max * sizeof (OP *);
690#endif
691 }
692 }
693
694 return rss;
695}
696
697/** coroutine stack handling ************************************************/
698
699static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
700static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
701static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
702
703/* apparently < 5.8.8 */
704#ifndef MgPV_nolen_const
705#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
706 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
707 (const char*)(mg)->mg_ptr)
708#endif
709
710/*
711 * This overrides the default magic get method of %SIG elements.
712 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
713 * and instead of tryign to save and restore the hash elements, we just provide
714 * readback here.
715 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
716 * not expecting this to actually change the hook. This is a potential problem
717 * when a schedule happens then, but we ignore this.
718 */
719static int
720coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
721{
722 const char *s = MgPV_nolen_const (mg);
723
724 if (*s == '_')
725 {
726 SV **svp = 0;
727
728 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
729 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
730
731 if (svp)
732 {
733 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
734 return 0;
735 }
736 }
737
738 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
739}
740
741static int
742coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
743{
744 const char *s = MgPV_nolen_const (mg);
745
746 if (*s == '_')
747 {
748 SV **svp = 0;
749
750 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
751 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
752
753 if (svp)
754 {
755 SV *old = *svp;
756 *svp = 0;
757 SvREFCNT_dec (old);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = newSVsv (sv);
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787}
788
470static void 789static void
471setup_coro (struct coro *coro) 790coro_setup (pTHX_ struct coro *coro)
472{ 791{
473 /* 792 /*
474 * emulate part of the perl startup here. 793 * emulate part of the perl startup here.
475 */ 794 */
476
477 coro_init_stacks (); 795 coro_init_stacks (aTHX);
478 796
797 PL_runops = RUNOPS_DEFAULT;
798 PL_curcop = &PL_compiling;
799 PL_in_eval = EVAL_NULL;
479 PL_curcop = 0; 800 PL_comppad = 0;
480 PL_in_eval = 0;
481 PL_curpm = 0; 801 PL_curpm = 0;
802 PL_curpad = 0;
803 PL_localizing = 0;
804 PL_dirty = 0;
805 PL_restartop = 0;
806#if PERL_VERSION_ATLEAST (5,10,0)
807 PL_parser = 0;
808#endif
809
810 /* recreate the die/warn hooks */
811 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
812 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
813
814 GvSV (PL_defgv) = newSV (0);
815 GvAV (PL_defgv) = coro->args; coro->args = 0;
816 GvSV (PL_errgv) = newSV (0);
817 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
818 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
482 820
483 { 821 {
484 dSP; 822 dSP;
485 LOGOP myop; 823 LOGOP myop;
486 824
487 /* I have no idea why this is needed, but it is */
488 PUSHMARK (SP);
489
490 SvREFCNT_dec (GvAV (PL_defgv));
491 GvAV (PL_defgv) = coro->args; coro->args = 0;
492
493 Zero (&myop, 1, LOGOP); 825 Zero (&myop, 1, LOGOP);
494 myop.op_next = Nullop; 826 myop.op_next = Nullop;
495 myop.op_flags = OPf_WANT_VOID; 827 myop.op_flags = OPf_WANT_VOID;
496 828
829 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
831 PUTBACK;
497 PL_op = (OP *)&myop; 832 PL_op = (OP *)&myop;
498
499 PUSHMARK (SP);
500 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501 PUTBACK;
502 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503 SPAGAIN; 834 SPAGAIN;
504
505 ENTER; /* necessary e.g. for dounwind */
506 } 835 }
836
837 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */
842 ENTER;
507} 843}
508 844
509static void 845static void
846coro_destroy (pTHX_ struct coro *coro)
847{
848 if (!IN_DESTRUCT)
849 {
850 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0);
852 assert (PL_tmps_floor == -1);
853
854 /* free all temporaries */
855 FREETMPS;
856 assert (PL_tmps_ix == -1);
857
858 /* unwind all extra stacks */
859 POPSTACK_TO (PL_mainstack);
860
861 /* unwind main stack */
862 dounwind (-1);
863 }
864
865 SvREFCNT_dec (GvSV (PL_defgv));
866 SvREFCNT_dec (GvAV (PL_defgv));
867 SvREFCNT_dec (GvSV (PL_errgv));
868 SvREFCNT_dec (PL_defoutgv);
869 SvREFCNT_dec (PL_rs);
870 SvREFCNT_dec (GvSV (irsgv));
871
872 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook);
874
875 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw);
877
878 coro_destroy_stacks (aTHX);
879}
880
881static void
510free_coro_mortal () 882free_coro_mortal (pTHX)
511{ 883{
512 if (coro_mortal) 884 if (expect_true (coro_mortal))
513 { 885 {
514 SvREFCNT_dec (coro_mortal); 886 SvREFCNT_dec (coro_mortal);
515 coro_mortal = 0; 887 coro_mortal = 0;
516 } 888 }
517} 889}
518 890
891static int
892runops_trace (pTHX)
893{
894 COP *oldcop = 0;
895 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx;
898
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 {
901 PERL_ASYNC_CHECK ();
902
903 if (cctx->flags & CC_TRACE_ALL)
904 {
905 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
906 {
907 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
908 SV **bot, **top;
909 AV *av = newAV (); /* return values */
910 SV **cb;
911 dSP;
912
913 GV *gv = CvGV (cx->blk_sub.cv);
914 SV *fullname = sv_2mortal (newSV (0));
915 if (isGV (gv))
916 gv_efullname3 (fullname, gv, 0);
917
918 bot = PL_stack_base + cx->blk_oldsp + 1;
919 top = cx->blk_gimme == G_ARRAY ? SP + 1
920 : cx->blk_gimme == G_SCALAR ? bot + 1
921 : bot;
922
923 av_extend (av, top - bot);
924 while (bot < top)
925 av_push (av, SvREFCNT_inc_NN (*bot++));
926
927 PL_runops = RUNOPS_DEFAULT;
928 ENTER;
929 SAVETMPS;
930 EXTEND (SP, 3);
931 PUSHMARK (SP);
932 PUSHs (&PL_sv_no);
933 PUSHs (fullname);
934 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
935 PUTBACK;
936 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
937 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
938 SPAGAIN;
939 FREETMPS;
940 LEAVE;
941 PL_runops = runops_trace;
942 }
943
944 if (oldcop != PL_curcop)
945 {
946 oldcop = PL_curcop;
947
948 if (PL_curcop != &PL_compiling)
949 {
950 SV **cb;
951
952 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
953 {
954 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
955
956 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
957 {
958 runops_proc_t old_runops = PL_runops;
959 dSP;
960 GV *gv = CvGV (cx->blk_sub.cv);
961 SV *fullname = sv_2mortal (newSV (0));
962
963 if (isGV (gv))
964 gv_efullname3 (fullname, gv, 0);
965
966 PL_runops = RUNOPS_DEFAULT;
967 ENTER;
968 SAVETMPS;
969 EXTEND (SP, 3);
970 PUSHMARK (SP);
971 PUSHs (&PL_sv_yes);
972 PUSHs (fullname);
973 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
974 PUTBACK;
975 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
976 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
977 SPAGAIN;
978 FREETMPS;
979 LEAVE;
980 PL_runops = runops_trace;
981 }
982
983 oldcxix = cxstack_ix;
984 }
985
986 if (cctx->flags & CC_TRACE_LINE)
987 {
988 dSP;
989
990 PL_runops = RUNOPS_DEFAULT;
991 ENTER;
992 SAVETMPS;
993 EXTEND (SP, 3);
994 PL_runops = RUNOPS_DEFAULT;
995 PUSHMARK (SP);
996 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
997 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
998 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN;
1002 FREETMPS;
1003 LEAVE;
1004 PL_runops = runops_trace;
1005 }
1006 }
1007 }
1008 }
1009 }
1010
1011 TAINT_NOT;
1012 return 0;
1013}
1014
1015/* inject a fake call to Coro::State::_cctx_init into the execution */
1016/* _cctx_init should be careful, as it could be called at almost any time */
1017/* during execution of a perl program */
519static void NOINLINE 1018static void NOINLINE
520prepare_cctx (coro_cctx *cctx) 1019cctx_prepare (pTHX_ coro_cctx *cctx)
521{ 1020{
522 dSP; 1021 dSP;
523 LOGOP myop; 1022 LOGOP myop;
524 1023
1024 PL_top_env = &PL_start_env;
1025
1026 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace;
1028
525 Zero (&myop, 1, LOGOP); 1029 Zero (&myop, 1, LOGOP);
526 myop.op_next = PL_op; 1030 myop.op_next = PL_op;
527 myop.op_flags = OPf_WANT_VOID; 1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
528
529 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530 1032
531 PUSHMARK (SP); 1033 PUSHMARK (SP);
1034 EXTEND (SP, 2);
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533 PUTBACK; 1037 PUTBACK;
1038 PL_op = (OP *)&myop;
534 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535 SPAGAIN; 1040 SPAGAIN;
536} 1041}
537 1042
1043/*
1044 * this is a _very_ stripped down perl interpreter ;)
1045 */
538static void 1046static void
539coro_run (void *arg) 1047cctx_run (void *arg)
540{ 1048{
1049 dTHX;
1050
541 /* coro_run is the alternative epilogue of transfer() */ 1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */
542 UNLOCK; 1052 UNLOCK;
543 1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next;
1056
1057 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059
1060 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op;
1062 perl_run (PL_curinterp);
1063
544 /* 1064 /*
545 * this is a _very_ stripped down perl interpreter ;) 1065 * If perl-run returns we assume exit() was being called or the coro
1066 * fell off the end, which seems to be the only valid (non-bug)
1067 * reason for perl_run to return. We try to exit by jumping to the
1068 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept
546 */ 1070 */
547 PL_top_env = &PL_start_env; 1071 PL_top_env = main_top_env;
548 1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
549 /* inject call to cctx_init */
550 prepare_cctx ((coro_cctx *)arg);
551
552 /* somebody will hit me for both perl_run and PL_restartop */
553 perl_run (PL_curinterp);
554
555 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556 abort ();
557} 1073}
558 1074
559static coro_cctx * 1075static coro_cctx *
560cctx_new () 1076cctx_new ()
561{ 1077{
562 coro_cctx *cctx; 1078 coro_cctx *cctx;
1079 void *stack_start;
1080 size_t stack_size;
563 1081
564 ++cctx_count; 1082 ++cctx_count;
565 1083
566 New (0, cctx, 1, coro_cctx); 1084 Newz (0, cctx, 1, coro_cctx);
567 1085
568#if HAVE_MMAP 1086#if HAVE_MMAP
569
570 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571 /* mmap suppsedly does allocate-on-write for us */ 1088 /* mmap supposedly does allocate-on-write for us */
572 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1089 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
573 1090
574 if (cctx->sptr == (void *)-1) 1091 if (cctx->sptr != (void *)-1)
575 {
576 perror ("FATAL: unable to mmap stack for coroutine");
577 _exit (EXIT_FAILURE);
578 } 1092 {
579
580# if STACKGUARD 1093# if CORO_STACKGUARD
581 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582# endif 1095# endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED;
1099 }
1100 else
1101#endif
1102 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long);
583 1105
584#else
585
586 cctx->ssize = STACKSIZE * (long)sizeof (long);
587 New (0, cctx->sptr, STACKSIZE, long);
588
589 if (!cctx->sptr) 1106 if (!cctx->sptr)
590 { 1107 {
591 perror ("FATAL: unable to malloc stack for coroutine"); 1108 perror ("FATAL: unable to allocate stack for coroutine");
592 _exit (EXIT_FAILURE); 1109 _exit (EXIT_FAILURE);
593 } 1110 }
594 1111
595#endif 1112 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize;
1114 }
596 1115
597#if USE_VALGRIND 1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
598 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
599 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
600 cctx->ssize + (char *)cctx->sptr
601 );
602#endif
603
604 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
605 1118
606 return cctx; 1119 return cctx;
607} 1120}
608 1121
609static void 1122static void
610cctx_free (coro_cctx *cctx) 1123cctx_destroy (coro_cctx *cctx)
611{ 1124{
612 if (!cctx) 1125 if (!cctx)
613 return; 1126 return;
614 1127
615 --cctx_count; 1128 --cctx_count;
616 1129
617#if USE_VALGRIND 1130#if CORO_USE_VALGRIND
618 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619#endif 1132#endif
620 1133
621#if HAVE_MMAP 1134#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED)
622 munmap (cctx->sptr, cctx->ssize); 1136 munmap (cctx->sptr, cctx->ssize);
623#else 1137 else
1138#endif
624 Safefree (cctx->sptr); 1139 Safefree (cctx->sptr);
625#endif
626 1140
627 Safefree (cctx); 1141 Safefree (cctx);
628} 1142}
629 1143
1144/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1146
630static coro_cctx * 1147static coro_cctx *
631cctx_get () 1148cctx_get (pTHX)
632{ 1149{
633 coro_cctx *cctx; 1150 while (expect_true (cctx_first))
634
635 if (cctx_first)
636 { 1151 {
1152 coro_cctx *cctx = cctx_first;
1153 cctx_first = cctx->next;
637 --cctx_idle; 1154 --cctx_idle;
638 cctx = cctx_first; 1155
639 cctx_first = cctx->next; 1156 if (expect_true (!CCTX_EXPIRED (cctx)))
640 } 1157 return cctx;
641 else 1158
642 { 1159 cctx_destroy (cctx);
643 cctx = cctx_new ();
644 PL_op = PL_op->op_next;
645 } 1160 }
646 1161
647 return cctx; 1162 return cctx_new ();
648} 1163}
649 1164
650static void 1165static void
651cctx_put (coro_cctx *cctx) 1166cctx_put (coro_cctx *cctx)
652{ 1167{
1168 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
1170 {
1171 coro_cctx *first = cctx_first;
1172 cctx_first = first->next;
1173 --cctx_idle;
1174
1175 cctx_destroy (first);
1176 }
1177
653 ++cctx_idle; 1178 ++cctx_idle;
654 cctx->next = cctx_first; 1179 cctx->next = cctx_first;
655 cctx_first = cctx; 1180 cctx_first = cctx;
656} 1181}
657 1182
658/* never call directly, always through the coro_state_transfer global variable */ 1183/** coroutine switching *****************************************************/
1184
1185static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{
1188 if (expect_true (prev != next))
1189 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1192
1193 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1195
1196 if (expect_false (next->flags & CF_DESTROYED))
1197 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1198
1199#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1202#endif
1203 }
1204}
1205
1206/* always use the TRANSFER macro */
659static void NOINLINE 1207static void NOINLINE
660transfer (struct coro *prev, struct coro *next, int flags) 1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
661{ 1209{
662 dSTACKLEVEL; 1210 dSTACKLEVEL;
1211 static volatile int has_throw;
663 1212
664 /* sometimes transfer is only called to set idle_sp */ 1213 /* sometimes transfer is only called to set idle_sp */
665 if (flags == TRANSFER_SET_STACKLEVEL) 1214 if (expect_false (!next))
1215 {
666 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1217 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1218 }
667 else if (prev != next) 1219 else if (expect_true (prev != next))
668 { 1220 {
669 coro_cctx *prev__cctx; 1221 coro_cctx *prev__cctx;
670 1222
1223 if (expect_false (prev->flags & CF_NEW))
1224 {
1225 /* create a new empty context */
1226 Newz (0, prev->cctx, 1, coro_cctx);
1227 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING;
1229 }
1230
1231 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING;
1233
671 LOCK; 1234 LOCK;
672 1235
673 if (next->mainstack) 1236 /* first get rid of the old state */
1237 save_perl (aTHX_ prev);
1238
1239 if (expect_false (next->flags & CF_NEW))
674 { 1240 {
675 /* coroutine already started */ 1241 /* need to start coroutine */
676 SAVE (prev, flags); 1242 next->flags &= ~CF_NEW;
677 LOAD (next); 1243 /* setup coroutine call */
1244 coro_setup (aTHX_ next);
678 } 1245 }
679 else 1246 else
1247 load_perl (aTHX_ next);
1248
1249 prev__cctx = prev->cctx;
1250
1251 /* possibly "free" the cctx */
1252 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL
1254 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx
1256 ))
680 { 1257 {
681 /* need to start coroutine */ 1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
682 /* first get rid of the old state */ 1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
683 SAVE (prev, -1); 1260
684 /* setup coroutine call */
685 setup_coro (next);
686 /* need a stack */
687 next->cctx = 0; 1261 prev->cctx = 0;
1262
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1265 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1266 if (!next->cctx)
1267 next->cctx = cctx_get (aTHX);
1268
1269 cctx_put (prev__cctx);
688 } 1270 }
689 1271
690 if (!prev->cctx) 1272 ++next->usecount;
691 /* create a new empty context */
692 Newz (0, prev->cctx, 1, coro_cctx);
693 1273
694 prev__cctx = prev->cctx;
695
696 /* possibly "free" the cctx */
697 if (prev__cctx->idle_sp == STACKLEVEL)
698 {
699 cctx_put (prev__cctx);
700 prev->cctx = 0;
701 }
702
703 if (!next->cctx) 1274 if (expect_true (!next->cctx))
704 next->cctx = cctx_get (); 1275 next->cctx = cctx_get (aTHX);
705 1276
1277 has_throw = !!next->throw;
1278
706 if (prev__cctx != next->cctx) 1279 if (expect_false (prev__cctx != next->cctx))
707 { 1280 {
708 prev__cctx->top_env = PL_top_env; 1281 prev__cctx->top_env = PL_top_env;
709 PL_top_env = next->cctx->top_env; 1282 PL_top_env = next->cctx->top_env;
710 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711 } 1284 }
712 1285
713 free_coro_mortal (); 1286 free_coro_mortal (aTHX);
714
715 UNLOCK; 1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
716 } 1301 }
717} 1302}
718 1303
719struct transfer_args 1304struct transfer_args
720{ 1305{
721 struct coro *prev, *next; 1306 struct coro *prev, *next;
722 int flags;
723}; 1307};
724 1308
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
725#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
726 1311
1312/** high level stuff ********************************************************/
1313
727static void 1314static int
728coro_state_destroy (struct coro *coro) 1315coro_state_destroy (pTHX_ struct coro *coro)
729{ 1316{
730 if (coro->refcnt--) 1317 if (coro->flags & CF_DESTROYED)
731 return; 1318 return 0;
1319
1320 coro->flags |= CF_DESTROYED;
1321
1322 if (coro->flags & CF_READY)
1323 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready;
1328 UNLOCK;
1329 }
1330 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
732 1332
733 if (coro->mainstack && coro->mainstack != main_mainstack) 1333 if (coro->mainstack && coro->mainstack != main_mainstack)
734 { 1334 {
735 struct coro temp; 1335 struct coro temp;
736 1336
737 SAVE ((&temp), TRANSFER_SAVE_ALL); 1337 if (coro->flags & CF_RUNNING)
738 LOAD (coro); 1338 croak ("FATAL: tried to destroy currently running coroutine");
739 1339
740 coro_destroy_stacks (); 1340 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro);
741 1342
742 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1343 coro_destroy (aTHX_ coro);
743 1344
1345 load_perl (aTHX_ &temp);
1346
744 coro->mainstack = 0; 1347 coro->slot = 0;
745 } 1348 }
746 1349
747 cctx_free (coro->cctx); 1350 cctx_destroy (coro->cctx);
748 SvREFCNT_dec (coro->args); 1351 SvREFCNT_dec (coro->args);
749 Safefree (coro); 1352
1353 if (coro->next) coro->next->prev = coro->prev;
1354 if (coro->prev) coro->prev->next = coro->next;
1355 if (coro == coro_first) coro_first = coro->next;
1356
1357 return 1;
750} 1358}
751 1359
752static int 1360static int
753coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1361coro_state_free (pTHX_ SV *sv, MAGIC *mg)
754{ 1362{
755 struct coro *coro = (struct coro *)mg->mg_ptr; 1363 struct coro *coro = (struct coro *)mg->mg_ptr;
756 mg->mg_ptr = 0; 1364 mg->mg_ptr = 0;
757 1365
1366 coro->hv = 0;
1367
1368 if (--coro->refcnt < 0)
1369 {
758 coro_state_destroy (coro); 1370 coro_state_destroy (aTHX_ coro);
1371 Safefree (coro);
1372 }
759 1373
760 return 0; 1374 return 0;
761} 1375}
762 1376
763static int 1377static int
… …
770 return 0; 1384 return 0;
771} 1385}
772 1386
773static MGVTBL coro_state_vtbl = { 1387static MGVTBL coro_state_vtbl = {
774 0, 0, 0, 0, 1388 0, 0, 0, 0,
775 coro_state_clear, 1389 coro_state_free,
776 0, 1390 0,
777#ifdef MGf_DUP 1391#ifdef MGf_DUP
778 coro_state_dup, 1392 coro_state_dup,
779#else 1393#else
780# define MGf_DUP 0 1394# define MGf_DUP 0
781#endif 1395#endif
782}; 1396};
783 1397
784static struct coro *
785SvSTATE (SV *coro)
786{
787 HV *stash;
788 MAGIC *mg;
789
790 if (SvROK (coro))
791 coro = SvRV (coro);
792
793 stash = SvSTASH (coro);
794 if (stash != coro_stash && stash != coro_state_stash)
795 {
796 /* very slow, but rare, check */
797 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
798 croak ("Coro::State object required");
799 }
800
801 mg = SvMAGIC (coro);
802 assert (mg->mg_type == PERL_MAGIC_ext);
803 return (struct coro *)mg->mg_ptr;
804}
805
806static void 1398static void
807prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
808{ 1400{
809 ta->prev = SvSTATE (prev); 1401 ta->prev = SvSTATE (prev_sv);
810 ta->next = SvSTATE (next); 1402 ta->next = SvSTATE (next_sv);
811 ta->flags = flags; 1403 TRANSFER_CHECK (*ta);
812} 1404}
813 1405
814static void 1406static void
815api_transfer (SV *prev, SV *next, int flags) 1407api_transfer (SV *prev_sv, SV *next_sv)
816{ 1408{
817 dTHX; 1409 dTHX;
818 struct transfer_args ta; 1410 struct transfer_args ta;
819 1411
820 prepare_transfer (&ta, prev, next, flags); 1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821 TRANSFER (ta); 1413 TRANSFER (ta, 1);
822} 1414}
823 1415
824/** Coro ********************************************************************/ 1416/** Coro ********************************************************************/
825 1417
826#define PRIO_MAX 3
827#define PRIO_HIGH 1
828#define PRIO_NORMAL 0
829#define PRIO_LOW -1
830#define PRIO_IDLE -3
831#define PRIO_MIN -4
832
833/* for Coro.pm */
834static GV *coro_current, *coro_idle;
835static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836static int coro_nready;
837
838static void 1418static void
839coro_enq (SV *sv) 1419coro_enq (pTHX_ SV *coro_sv)
1420{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1422}
1423
1424static SV *
1425coro_deq (pTHX)
840{ 1426{
841 int prio; 1427 int prio;
842 1428
843 if (SvTYPE (sv) != SVt_PVHV)
844 croak ("Coro::ready tried to enqueue something that is not a coroutine");
845
846 prio = SvSTATE (sv)->prio;
847
848 av_push (coro_ready [prio - PRIO_MIN], sv);
849 coro_nready++;
850}
851
852static SV *
853coro_deq (int min_prio)
854{
855 int prio = PRIO_MAX - PRIO_MIN;
856
857 min_prio -= PRIO_MIN;
858 if (min_prio < 0)
859 min_prio = 0;
860
861 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
862 if (AvFILLp (coro_ready [prio]) >= 0) 1430 if (AvFILLp (coro_ready [prio]) >= 0)
863 {
864 coro_nready--;
865 return av_shift (coro_ready [prio]); 1431 return av_shift (coro_ready [prio]);
866 }
867 1432
868 return 0; 1433 return 0;
869} 1434}
870 1435
1436static int
1437api_ready (SV *coro_sv)
1438{
1439 dTHX;
1440 struct coro *coro;
1441 SV *sv_hook;
1442 void (*xs_hook)(void);
1443
1444 if (SvROK (coro_sv))
1445 coro_sv = SvRV (coro_sv);
1446
1447 coro = SvSTATE (coro_sv);
1448
1449 if (coro->flags & CF_READY)
1450 return 0;
1451
1452 coro->flags |= CF_READY;
1453
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1460 ++coro_nready;
1461
1462 UNLOCK;
1463
1464 if (sv_hook)
1465 {
1466 dSP;
1467
1468 ENTER;
1469 SAVETMPS;
1470
1471 PUSHMARK (SP);
1472 PUTBACK;
1473 call_sv (sv_hook, G_DISCARD);
1474 SPAGAIN;
1475
1476 FREETMPS;
1477 LEAVE;
1478 }
1479
1480 if (xs_hook)
1481 xs_hook ();
1482
1483 return 1;
1484}
1485
1486static int
1487api_is_ready (SV *coro_sv)
1488{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491}
1492
871static void 1493static void
872api_ready (SV *coro) 1494prepare_schedule (pTHX_ struct transfer_args *ta)
873{ 1495{
874 dTHX; 1496 SV *prev_sv, *next_sv;
875 1497
876 if (SvROK (coro)) 1498 for (;;)
877 coro = SvRV (coro); 1499 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX);
1502
1503 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv))
1505 {
1506 dSP;
1507 UNLOCK;
1508
1509 ENTER;
1510 SAVETMPS;
1511
1512 PUSHMARK (SP);
1513 PUTBACK;
1514 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1515 SPAGAIN;
1516
1517 FREETMPS;
1518 LEAVE;
1519 continue;
1520 }
1521
1522 ta->next = SvSTATE (next_sv);
1523
1524 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */
1530 continue;
1531 }
1532
1533 --coro_nready;
1534 UNLOCK;
1535 break;
1536 }
1537
1538 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv);
1541 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY);
1543 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv);
878 1545
879 LOCK; 1546 LOCK;
880 coro_enq (SvREFCNT_inc (coro)); 1547 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv;
881 UNLOCK; 1549 UNLOCK;
882} 1550}
883 1551
884static void 1552static void
885prepare_schedule (struct transfer_args *ta)
886{
887 SV *current, *prev, *next;
888
889 current = GvSV (coro_current);
890
891 for (;;)
892 {
893 LOCK;
894 next = coro_deq (PRIO_MIN);
895 UNLOCK;
896
897 if (next)
898 break;
899
900 {
901 dSP;
902
903 ENTER;
904 SAVETMPS;
905
906 PUSHMARK (SP);
907 PUTBACK;
908 call_sv (GvSV (coro_idle), G_DISCARD);
909
910 FREETMPS;
911 LEAVE;
912 }
913 }
914
915 prev = SvRV (current);
916 SvRV (current) = next;
917
918 /* free this only after the transfer */
919 LOCK;
920 free_coro_mortal ();
921 UNLOCK;
922 coro_mortal = prev;
923
924 ta->prev = SvSTATE (prev);
925 ta->next = SvSTATE (next);
926 ta->flags = TRANSFER_SAVE_ALL;
927}
928
929static void
930prepare_cede (struct transfer_args *ta) 1553prepare_cede (pTHX_ struct transfer_args *ta)
931{ 1554{
932 LOCK; 1555 api_ready (coro_current);
933 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934 UNLOCK;
935
936 prepare_schedule (ta); 1556 prepare_schedule (aTHX_ ta);
1557}
1558
1559static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta)
1561{
1562 if (coro_nready)
1563 {
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta);
1566 api_ready (prev);
1567 return 1;
1568 }
1569 else
1570 return 0;
937} 1571}
938 1572
939static void 1573static void
940api_schedule (void) 1574api_schedule (void)
941{ 1575{
942 dTHX; 1576 dTHX;
943 struct transfer_args ta; 1577 struct transfer_args ta;
944 1578
945 prepare_schedule (&ta); 1579 prepare_schedule (aTHX_ &ta);
946 TRANSFER (ta); 1580 TRANSFER (ta, 1);
947} 1581}
948 1582
949static void 1583static int
950api_cede (void) 1584api_cede (void)
951{ 1585{
952 dTHX; 1586 dTHX;
953 struct transfer_args ta; 1587 struct transfer_args ta;
954 1588
955 prepare_cede (&ta); 1589 prepare_cede (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
956 TRANSFER (ta); 1593 TRANSFER (ta, 1);
1594 return 1;
1595 }
1596 else
1597 return 0;
957} 1598}
958 1599
1600static int
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags)
1617{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv);
1620
1621 if (flags & CC_TRACE)
1622 {
1623 if (!coro->cctx)
1624 coro->cctx = cctx_new ();
1625 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack");
1627
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 {
1632 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1633
1634 if (coro->flags & CF_RUNNING)
1635 PL_runops = RUNOPS_DEFAULT;
1636 else
1637 coro->slot->runops = RUNOPS_DEFAULT;
1638 }
1639}
1640
1641static int
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1643{
1644 AV *padlist;
1645 AV *av = (AV *)mg->mg_obj;
1646
1647 abort ();
1648
1649 return 0;
1650}
1651
1652static MGVTBL coro_gensub_vtbl = {
1653 0, 0, 0, 0,
1654 coro_gensub_free
1655};
1656
1657/*****************************************************************************/
1658/* PerlIO::cede */
1659
1660typedef struct
1661{
1662 PerlIOBuf base;
1663 NV next, every;
1664} PerlIOCede;
1665
1666static IV
1667PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1668{
1669 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1670
1671 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1672 self->next = nvtime () + self->every;
1673
1674 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1675}
1676
1677static SV *
1678PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1679{
1680 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1681
1682 return newSVnv (self->every);
1683}
1684
1685static IV
1686PerlIOCede_flush (pTHX_ PerlIO *f)
1687{
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime ();
1690
1691 if (now >= self->next)
1692 {
1693 api_cede ();
1694 self->next = now + self->every;
1695 }
1696
1697 return PerlIOBuf_flush (aTHX_ f);
1698}
1699
1700static PerlIO_funcs PerlIO_cede =
1701{
1702 sizeof(PerlIO_funcs),
1703 "cede",
1704 sizeof(PerlIOCede),
1705 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1706 PerlIOCede_pushed,
1707 PerlIOBuf_popped,
1708 PerlIOBuf_open,
1709 PerlIOBase_binmode,
1710 PerlIOCede_getarg,
1711 PerlIOBase_fileno,
1712 PerlIOBuf_dup,
1713 PerlIOBuf_read,
1714 PerlIOBuf_unread,
1715 PerlIOBuf_write,
1716 PerlIOBuf_seek,
1717 PerlIOBuf_tell,
1718 PerlIOBuf_close,
1719 PerlIOCede_flush,
1720 PerlIOBuf_fill,
1721 PerlIOBase_eof,
1722 PerlIOBase_error,
1723 PerlIOBase_clearerr,
1724 PerlIOBase_setlinebuf,
1725 PerlIOBuf_get_base,
1726 PerlIOBuf_bufsiz,
1727 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt,
1730};
1731
1732
959MODULE = Coro::State PACKAGE = Coro::State 1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
960 1734
961PROTOTYPES: DISABLE 1735PROTOTYPES: DISABLE
962 1736
963BOOT: 1737BOOT:
964{ 1738{
965#ifdef USE_ITHREADS 1739#ifdef USE_ITHREADS
966 MUTEX_INIT (&coro_mutex); 1740 MUTEX_INIT (&coro_mutex);
967#endif 1741#endif
968 BOOT_PAGESIZE; 1742 BOOT_PAGESIZE;
969 1743
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1746
1747 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1748 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1749 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1750
1751 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1752 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1753 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1754
970 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1755 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971 1756
972 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1757 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
973 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1758 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
974 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1759 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1760 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
975 1761
976 main_mainstack = PL_mainstack; 1762 main_mainstack = PL_mainstack;
1763 main_top_env = PL_top_env;
977 1764
1765 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev;
1767
978 coroapi.ver = CORO_API_VERSION; 1768 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION;
979 coroapi.transfer = api_transfer; 1770 coroapi.transfer = api_transfer;
1771
1772 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774
1775 if (!svp) croak ("Time::HiRes is required");
1776 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1777
1778 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1779 }
980 1780
981 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1781 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
982} 1782}
983 1783
984SV * 1784SV *
985new (char *klass, ...) 1785new (char *klass, ...)
986 CODE: 1786 CODE:
987{ 1787{
988 struct coro *coro; 1788 struct coro *coro;
1789 MAGIC *mg;
989 HV *hv; 1790 HV *hv;
990 int i; 1791 int i;
991 1792
992 Newz (0, coro, 1, struct coro); 1793 Newz (0, coro, 1, struct coro);
993 coro->args = newAV (); 1794 coro->args = newAV ();
1795 coro->flags = CF_NEW;
994 1796
1797 if (coro_first) coro_first->prev = coro;
1798 coro->next = coro_first;
1799 coro_first = coro;
1800
995 hv = newHV (); 1801 coro->hv = hv = newHV ();
996 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1802 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1803 mg->mg_flags |= MGf_DUP;
997 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1804 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998 1805
1806 av_extend (coro->args, items - 1);
999 for (i = 1; i < items; i++) 1807 for (i = 1; i < items; i++)
1000 av_push (coro->args, newSVsv (ST (i))); 1808 av_push (coro->args, newSVsv (ST (i)));
1001} 1809}
1002 OUTPUT: 1810 OUTPUT:
1003 RETVAL 1811 RETVAL
1004 1812
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1005void 1816void
1006_set_stacklevel (...) 1817_set_stacklevel (...)
1007 ALIAS: 1818 ALIAS:
1008 Coro::State::transfer = 1 1819 Coro::State::transfer = 1
1009 Coro::schedule = 2 1820 Coro::schedule = 2
1010 Coro::cede = 3 1821 Coro::cede = 3
1011 Coro::Cont::yield = 4 1822 Coro::cede_notself = 4
1012 CODE: 1823 CODE:
1013{ 1824{
1014 struct transfer_args ta; 1825 struct transfer_args ta;
1015 1826
1827 PUTBACK;
1016 switch (ix) 1828 switch (ix)
1017 { 1829 {
1018 case 0: 1830 case 0:
1019 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1020 ta.next = 0; 1832 ta.next = 0;
1021 ta.flags = TRANSFER_SET_STACKLEVEL;
1022 break; 1833 break;
1023 1834
1024 case 1: 1835 case 1:
1025 if (items != 3) 1836 if (items != 2)
1026 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1027 1838
1028 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029 break; 1840 break;
1030 1841
1031 case 2: 1842 case 2:
1032 prepare_schedule (&ta); 1843 prepare_schedule (aTHX_ &ta);
1033 break; 1844 break;
1034 1845
1035 case 3: 1846 case 3:
1036 prepare_cede (&ta); 1847 prepare_cede (aTHX_ &ta);
1037 break; 1848 break;
1038 1849
1039 case 4: 1850 case 4:
1040 { 1851 if (!prepare_cede_notself (aTHX_ &ta))
1041 SV *yieldstack; 1852 XSRETURN_EMPTY;
1042 SV *sv;
1043 AV *defav = GvAV (PL_defgv);
1044 1853
1045 yieldstack = *hv_fetch (
1046 (HV *)SvRV (GvSV (coro_current)),
1047 "yieldstack", sizeof ("yieldstack") - 1,
1048 0
1049 );
1050
1051 /* set up @_ -- ugly */
1052 av_clear (defav);
1053 av_fill (defav, items - 1);
1054 while (items--)
1055 av_store (defav, items, SvREFCNT_inc (ST(items)));
1056
1057 sv = av_pop ((AV *)SvRV (yieldstack));
1058 ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1059 ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1060 ta.flags = 0;
1061 SvREFCNT_dec (sv);
1062 }
1063 break; 1854 break;
1064
1065 } 1855 }
1856 SPAGAIN;
1066 1857
1858 BARRIER;
1859 PUTBACK;
1067 TRANSFER (ta); 1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1068} 1863}
1864
1865bool
1866_destroy (SV *coro_sv)
1867 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1869 OUTPUT:
1870 RETVAL
1069 1871
1070void 1872void
1071_clone_state_from (SV *dst, SV *src)
1072 CODE:
1073{
1074 struct coro *coro_src = SvSTATE (src);
1075
1076 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1077
1078 ++coro_src->refcnt;
1079 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1080}
1081
1082void
1083_exit (code) 1873_exit (int code)
1084 int code
1085 PROTOTYPE: $ 1874 PROTOTYPE: $
1086 CODE: 1875 CODE:
1087 _exit (code); 1876 _exit (code);
1877
1878int
1879cctx_stacksize (int new_stacksize = 0)
1880 CODE:
1881 RETVAL = coro_stacksize;
1882 if (new_stacksize)
1883 coro_stacksize = new_stacksize;
1884 OUTPUT:
1885 RETVAL
1088 1886
1089int 1887int
1090cctx_count () 1888cctx_count ()
1091 CODE: 1889 CODE:
1092 RETVAL = cctx_count; 1890 RETVAL = cctx_count;
… …
1098 CODE: 1896 CODE:
1099 RETVAL = cctx_idle; 1897 RETVAL = cctx_idle;
1100 OUTPUT: 1898 OUTPUT:
1101 RETVAL 1899 RETVAL
1102 1900
1901void
1902list ()
1903 PPCODE:
1904{
1905 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv)
1908 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1909}
1910
1911void
1912call (Coro::State coro, SV *coderef)
1913 ALIAS:
1914 eval = 1
1915 CODE:
1916{
1917 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1918 {
1919 struct coro temp;
1920
1921 if (!(coro->flags & CF_RUNNING))
1922 {
1923 PUTBACK;
1924 save_perl (aTHX_ &temp);
1925 load_perl (aTHX_ coro);
1926 }
1927
1928 {
1929 dSP;
1930 ENTER;
1931 SAVETMPS;
1932 PUTBACK;
1933 PUSHSTACK;
1934 PUSHMARK (SP);
1935
1936 if (ix)
1937 eval_sv (coderef, 0);
1938 else
1939 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1940
1941 POPSTACK;
1942 SPAGAIN;
1943 FREETMPS;
1944 LEAVE;
1945 PUTBACK;
1946 }
1947
1948 if (!(coro->flags & CF_RUNNING))
1949 {
1950 save_perl (aTHX_ coro);
1951 load_perl (aTHX_ &temp);
1952 SPAGAIN;
1953 }
1954 }
1955}
1956
1957SV *
1958is_ready (Coro::State coro)
1959 PROTOTYPE: $
1960 ALIAS:
1961 is_ready = CF_READY
1962 is_running = CF_RUNNING
1963 is_new = CF_NEW
1964 is_destroyed = CF_DESTROYED
1965 CODE:
1966 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT:
1968 RETVAL
1969
1970void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1972
1973SV *
1974has_cctx (Coro::State coro)
1975 PROTOTYPE: $
1976 CODE:
1977 RETVAL = boolSV (!!coro->cctx);
1978 OUTPUT:
1979 RETVAL
1980
1981int
1982is_traced (Coro::State coro)
1983 PROTOTYPE: $
1984 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT:
1987 RETVAL
1988
1989IV
1990rss (Coro::State coro)
1991 PROTOTYPE: $
1992 ALIAS:
1993 usecount = 1
1994 CODE:
1995 switch (ix)
1996 {
1997 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1998 case 1: RETVAL = coro->usecount; break;
1999 }
2000 OUTPUT:
2001 RETVAL
2002
2003void
2004force_cctx ()
2005 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015
2016void
2017swap_defsv (Coro::State self)
2018 PROTOTYPE: $
2019 ALIAS:
2020 swap_defav = 1
2021 CODE:
2022 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state");
2024 else
2025 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028
2029 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 }
2031
1103MODULE = Coro::State PACKAGE = Coro 2032MODULE = Coro::State PACKAGE = Coro
1104 2033
1105BOOT: 2034BOOT:
1106{ 2035{
1107 int i; 2036 int i;
1108 2037
2038 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2039 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2040 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2041
2042 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2043 SvREADONLY_on (coro_current);
2044
1109 coro_stash = gv_stashpv ("Coro", TRUE); 2045 coro_stash = gv_stashpv ("Coro", TRUE);
1110 2046
1111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2047 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2048 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2049 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2050 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2051 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2052 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117 2053
1118 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1119 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1120
1121 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122 coro_ready[i] = newAV (); 2055 coro_ready[i] = newAV ();
1123 2056
1124 { 2057 {
1125 SV *sv = perl_get_sv("Coro::API", 1); 2058 SV *sv = perl_get_sv ("Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1126 2060
1127 coroapi.schedule = api_schedule; 2061 coroapi.schedule = api_schedule;
1128 coroapi.cede = api_cede; 2062 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself;
1129 coroapi.ready = api_ready; 2064 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready;
1130 coroapi.nready = &coro_nready; 2066 coroapi.nready = &coro_nready;
1131 coroapi.current = coro_current; 2067 coroapi.current = coro_current;
1132 2068
1133 GCoroAPI = &coroapi; 2069 GCoroAPI = &coroapi;
1134 sv_setiv (sv, (IV)&coroapi); 2070 sv_setiv (sv, (IV)&coroapi);
1135 SvREADONLY_on (sv); 2071 SvREADONLY_on (sv);
1136 } 2072 }
1137} 2073}
2074
2075void
2076_set_current (SV *current)
2077 PROTOTYPE: $
2078 CODE:
2079 SvREFCNT_dec (SvRV (coro_current));
2080 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2081
2082void
2083_set_readyhook (SV *hook)
2084 PROTOTYPE: $
2085 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
1138 2090
1139int 2091int
1140prio (Coro::State coro, int newprio = 0) 2092prio (Coro::State coro, int newprio = 0)
1141 ALIAS: 2093 ALIAS:
1142 nice = 1 2094 nice = 1
… …
1145 RETVAL = coro->prio; 2097 RETVAL = coro->prio;
1146 2098
1147 if (items > 1) 2099 if (items > 1)
1148 { 2100 {
1149 if (ix) 2101 if (ix)
1150 newprio += coro->prio; 2102 newprio = coro->prio - newprio;
1151 2103
1152 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2104 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2105 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154 2106
1155 coro->prio = newprio; 2107 coro->prio = newprio;
1156 } 2108 }
1157} 2109}
2110 OUTPUT:
2111 RETVAL
1158 2112
1159void 2113SV *
1160ready (SV *self) 2114ready (SV *self)
1161 PROTOTYPE: $ 2115 PROTOTYPE: $
1162 CODE: 2116 CODE:
1163 api_ready (self); 2117 RETVAL = boolSV (api_ready (self));
2118 OUTPUT:
2119 RETVAL
1164 2120
1165int 2121int
1166nready (...) 2122nready (...)
1167 PROTOTYPE: 2123 PROTOTYPE:
1168 CODE: 2124 CODE:
1169 RETVAL = coro_nready; 2125 RETVAL = coro_nready;
1170 OUTPUT: 2126 OUTPUT:
1171 RETVAL 2127 RETVAL
1172 2128
1173MODULE = Coro::State PACKAGE = Coro::AIO 2129# for async_pool speedup
2130void
2131_pool_1 (SV *cb)
2132 CODE:
2133{
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current);
2136 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av;
2139 int i, len;
2140
2141 if (!invoke)
2142 {
2143 SV *old = PL_diehook;
2144 PL_diehook = 0;
2145 SvREFCNT_dec (old);
2146 croak ("\3async_pool terminate\2\n");
2147 }
2148
2149 SvREFCNT_dec (coro->saved_deffh);
2150 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2151
2152 hv_store (hv, "desc", sizeof ("desc") - 1,
2153 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2154
2155 invoke_av = (AV *)SvRV (invoke);
2156 len = av_len (invoke_av);
2157
2158 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2159
2160 if (len > 0)
2161 {
2162 av_fill (defav, len - 1);
2163 for (i = 0; i < len; ++i)
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2165 }
2166
2167 SvREFCNT_dec (invoke);
2168}
2169
2170void
2171_pool_2 (SV *cb)
2172 CODE:
2173{
2174 struct coro *coro = SvSTATE (coro_current);
2175
2176 sv_setsv (cb, &PL_sv_undef);
2177
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0;
2180
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 {
2184 SV *old = PL_diehook;
2185 PL_diehook = 0;
2186 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n");
2188 }
2189
2190 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193
2194 coro->prio = 0;
2195
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0);
2198
2199 av_push (av_async_pool, newSVsv (coro_current));
2200}
2201
2202#if 0
2203
2204void
2205_generator_call (...)
2206 PROTOTYPE: @
2207 PPCODE:
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2209 xxxx
2210 abort ();
1174 2211
1175SV * 2212SV *
1176_get_state () 2213gensub (SV *sub, ...)
1177 CODE: 2214 PROTOTYPE: &;@
2215 CODE:
1178{ 2216{
1179 struct { 2217 struct coro *coro;
1180 int errorno; 2218 MAGIC *mg;
1181 int laststype; 2219 CV *xcv;
1182 int laststatval; 2220 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1183 Stat_t statcache; 2221 int i;
1184 } data;
1185 2222
1186 data.errorno = errno; 2223 CvGV (ncv) = CvGV (cv);
1187 data.laststype = PL_laststype; 2224 CvFILE (ncv) = CvFILE (cv);
1188 data.laststatval = PL_laststatval;
1189 data.statcache = PL_statcache;
1190 2225
1191 RETVAL = newSVpvn ((char *)&data, sizeof data); 2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
1192} 2244}
1193 OUTPUT: 2245 OUTPUT:
1194 RETVAL 2246 RETVAL
1195 2247
2248#endif
2249
2250
2251MODULE = Coro::State PACKAGE = Coro::AIO
2252
1196void 2253void
1197_set_state (char *data_) 2254_get_state (SV *self)
2255 PPCODE:
2256{
2257 AV *defav = GvAV (PL_defgv);
2258 AV *av = newAV ();
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269
2270 av_extend (av, AvFILLp (defav) + 1 + 1);
2271
2272 for (i = 0; i <= AvFILLp (defav); ++i)
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2274
2275 av_push (av, data_sv);
2276
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2278
2279 api_ready (self);
2280}
2281
2282void
2283_set_state (SV *state)
1198 PROTOTYPE: $ 2284 PROTOTYPE: $
2285 PPCODE:
2286{
2287 AV *av = (AV *)SvRV (state);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2289 int i;
2290
2291 errno = data->errorno;
2292 PL_laststype = data->laststype;
2293 PL_laststatval = data->laststatval;
2294 PL_statcache = data->statcache;
2295
2296 EXTEND (SP, AvFILLp (av));
2297 for (i = 0; i < AvFILLp (av); ++i)
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2299}
2300
2301
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303
2304BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306
2307SV *
2308_schedule (...)
2309 PROTOTYPE: @
1199 CODE: 2310 CODE:
1200{ 2311{
1201 struct { 2312 static int incede;
1202 int errorno;
1203 int laststype;
1204 int laststatval;
1205 Stat_t statcache;
1206 } *data = (void *)data_;
1207 2313
1208 errno = data->errorno; 2314 api_cede_notself ();
1209 PL_laststype = data->laststype; 2315
1210 PL_laststatval = data->laststatval; 2316 ++incede;
1211 PL_statcache = data->statcache; 2317 while (coro_nready >= incede && api_cede ())
2318 ;
2319
2320 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede)
2322 {
2323 PUSHMARK (SP);
2324 PUTBACK;
2325 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2326 SPAGAIN;
2327 }
2328
2329 --incede;
1212} 2330}
2331
2332
2333MODULE = Coro::State PACKAGE = PerlIO::cede
2334
2335BOOT:
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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