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Comparing Coro/Coro/State.xs (file contents):
Revision 1.54 by pcg, Sat Mar 13 06:45:04 2004 UTC vs.
Revision 1.91 by root, Sat Nov 25 01:14:11 2006 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "libcoro/coro.c"
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
5#include "patchlevel.h" 9#include "patchlevel.h"
6 10
7#if PATCHLEVEL < 6 11#if PERL_VERSION < 6
8# ifndef PL_ppaddr 12# ifndef PL_ppaddr
9# define PL_ppaddr ppaddr 13# define PL_ppaddr ppaddr
10# endif 14# endif
11# ifndef call_sv 15# ifndef call_sv
12# define call_sv perl_call_sv 16# define call_sv perl_call_sv
… …
23# ifndef IS_PADCONST 27# ifndef IS_PADCONST
24# define IS_PADCONST(v) 0 28# define IS_PADCONST(v) 0
25# endif 29# endif
26#endif 30#endif
27 31
28#include "libcoro/coro.c"
29
30#include <signal.h> 32#include <errno.h>
33
34#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35# undef STACKGUARD
36#endif
37
38#ifndef STACKGUARD
39# define STACKGUARD 0
40#endif
31 41
32#ifdef HAVE_MMAP 42#ifdef HAVE_MMAP
33# include <unistd.h> 43# include <unistd.h>
34# include <sys/mman.h> 44# include <sys/mman.h>
35# ifndef MAP_ANONYMOUS 45# ifndef MAP_ANONYMOUS
… …
37# define MAP_ANONYMOUS MAP_ANON 47# define MAP_ANONYMOUS MAP_ANON
38# else 48# else
39# undef HAVE_MMAP 49# undef HAVE_MMAP
40# endif 50# endif
41# endif 51# endif
52# include <limits.h>
53# ifndef PAGESIZE
54# define PAGESIZE pagesize
55# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56static long pagesize;
57# else
58# define BOOT_PAGESIZE
42#endif 59# endif
60#endif
43 61
44#define SUB_INIT "Coro::State::initialize" 62#define SUB_INIT "Coro::State::initialize"
45#define UCORO_STATE "_coro_state"
46 63
47/* The next macro should declare a variable stacklevel that contains and approximation 64/* The next macro should declare a variable stacklevel that contains and approximation
48 * to the current C stack pointer. Its property is that it changes with each call 65 * to the current C stack pointer. Its property is that it changes with each call
49 * and should be unique. */ 66 * and should be unique. */
50#define dSTACKLEVEL void *stacklevel = &stacklevel 67#define dSTACKLEVEL void *stacklevel = &stacklevel
… …
53 70
54#define labs(l) ((l) >= 0 ? (l) : -(l)) 71#define labs(l) ((l) >= 0 ? (l) : -(l))
55 72
56#include "CoroAPI.h" 73#include "CoroAPI.h"
57 74
75#ifdef USE_ITHREADS
76static perl_mutex coro_mutex;
77# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
79#else
80# define LOCK (void)0
81# define UNLOCK (void)0
82#endif
83
58static struct CoroAPI coroapi; 84static struct CoroAPI coroapi;
85static AV *main_mainstack; /* used to differentiate between $main and others */
86static HV *coro_state_stash, *coro_stash;
87static SV *coro_mortal; /* will be freed after next transfer */
59 88
60/* this is actually not only the c stack but also c registers etc... */ 89/* this is actually not just the c stack but also c registers etc... */
61typedef struct { 90typedef struct coro_stack {
62 int refcnt; /* pointer reference counter */ 91 struct coro_stack *next;
63 int usecnt; /* shared by how many coroutines */
64 int gencnt; /* generation counter */
65 92
66 coro_context cctx; 93 void *idle_sp;
67
68 void *sptr; 94 void *sptr;
69 long ssize; /* positive == mmap, otherwise malloc */ 95 long ssize; /* positive == mmap, otherwise malloc */
96
97 /* cpu state */
98 coro_context cctx;
70} coro_stack; 99} coro_stack;
71 100
101static coro_stack *main_stack;
102
72struct coro { 103struct coro {
73 /* the top-level JMPENV for each coroutine, needed to catch dies. */
74 JMPENV start_env;
75
76 /* the optional C context */
77 coro_stack *stack;
78 void *cursp;
79 int gencnt;
80
81 /* optionally saved, might be zero */ 104 /* optionally saved, might be zero */
82 AV *defav; 105 AV *defav;
83 SV *defsv; 106 SV *defsv;
84 SV *errsv; 107 SV *errsv;
85 108
86 /* saved global state not related to stacks */ 109 /* saved global state not related to stacks */
87 U8 dowarn; 110 U8 dowarn;
88 I32 in_eval; 111 I32 in_eval;
89 112
113 /* the c stack, if any */
114 coro_stack *stack;
115
90 /* the stacks and related info (callchain etc..) */ 116 /* the stacks and related info (callchain etc..) */
91 PERL_SI *curstackinfo; 117 PERL_SI *curstackinfo;
92 AV *curstack; 118 AV *curstack;
93 AV *mainstack; 119 AV *mainstack;
94 SV **stack_sp; 120 SV **stack_sp;
95 OP *op; 121 OP *op;
96 SV **curpad; 122 SV **curpad;
97 AV *comppad; 123 AV *comppad;
124 CV *compcv;
98 SV **stack_base; 125 SV **stack_base;
99 SV **stack_max; 126 SV **stack_max;
100 SV **tmps_stack; 127 SV **tmps_stack;
101 I32 tmps_floor; 128 I32 tmps_floor;
102 I32 tmps_ix; 129 I32 tmps_ix;
… …
111 I32 savestack_ix; 138 I32 savestack_ix;
112 I32 savestack_max; 139 I32 savestack_max;
113 OP **retstack; 140 OP **retstack;
114 I32 retstack_ix; 141 I32 retstack_ix;
115 I32 retstack_max; 142 I32 retstack_max;
143 PMOP *curpm;
116 COP *curcop; 144 COP *curcop;
117 JMPENV *top_env; 145 JMPENV *top_env;
118 146
147 /* coro process data */
148 int prio;
149
119 /* data associated with this coroutine (initial args) */ 150 /* data associated with this coroutine (initial args) */
120 AV *args; 151 AV *args;
152 int refcnt;
121}; 153};
122 154
123typedef struct coro *Coro__State; 155typedef struct coro *Coro__State;
124typedef struct coro *Coro__State_or_hashref; 156typedef struct coro *Coro__State_or_hashref;
125 157
126static AV *main_mainstack; /* used to differentiate between $main and others */ 158static AV *
127static HV *coro_state_stash; 159coro_clone_padlist (pTHX_ CV *cv)
128static SV *ucoro_state_sv;
129static U32 ucoro_state_hash;
130static HV *padlist_cache;
131static SV *coro_mortal; /* will be freed after next transfer */
132
133/* mostly copied from op.c:cv_clone2 */
134STATIC AV *
135clone_padlist (AV *protopadlist)
136{ 160{
137 AV *av; 161 AV *padlist = CvPADLIST (cv);
138 I32 ix;
139 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
140 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
141 SV **pname = AvARRAY (protopad_name);
142 SV **ppad = AvARRAY (protopad);
143 I32 fname = AvFILLp (protopad_name);
144 I32 fpad = AvFILLp (protopad);
145 AV *newpadlist, *newpad_name, *newpad; 162 AV *newpadlist, *newpad;
146 SV **npad;
147
148 newpad_name = newAV ();
149 for (ix = fname; ix >= 0; ix--)
150 av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
151
152 newpad = newAV ();
153 av_fill (newpad, AvFILLp (protopad));
154 npad = AvARRAY (newpad);
155 163
156 newpadlist = newAV (); 164 newpadlist = newAV ();
157 AvREAL_off (newpadlist); 165 AvREAL_off (newpadlist);
158 av_store (newpadlist, 0, (SV *) newpad_name); 166#if PERL_VERSION < 9
167 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
168#else
169 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
170#endif
171 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
172 --AvFILLp (padlist);
173
174 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
159 av_store (newpadlist, 1, (SV *) newpad); 175 av_store (newpadlist, 1, (SV *)newpad);
160
161 av = newAV (); /* will be @_ */
162 av_extend (av, 0);
163 av_store (newpad, 0, (SV *) av);
164 AvFLAGS (av) = AVf_REIFY;
165
166 for (ix = fpad; ix > 0; ix--)
167 {
168 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
169 if (namesv && namesv != &PL_sv_undef)
170 {
171 char *name = SvPVX (namesv); /* XXX */
172 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
173 { /* lexical from outside? */
174 npad[ix] = SvREFCNT_inc (ppad[ix]);
175 }
176 else
177 { /* our own lexical */
178 SV *sv;
179 if (*name == '&')
180 sv = SvREFCNT_inc (ppad[ix]);
181 else if (*name == '@')
182 sv = (SV *) newAV ();
183 else if (*name == '%')
184 sv = (SV *) newHV ();
185 else
186 sv = NEWSV (0, 0);
187#ifdef SvPADBUSY
188 if (!SvPADBUSY (sv))
189#endif
190 SvPADMY_on (sv);
191 npad[ix] = sv;
192 }
193 }
194 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
195 {
196 npad[ix] = SvREFCNT_inc (ppad[ix]);
197 }
198 else
199 {
200 SV *sv = NEWSV (0, 0);
201 SvPADTMP_on (sv);
202 npad[ix] = sv;
203 }
204 }
205
206#if 0 /* return -ENOTUNDERSTOOD */
207 /* Now that vars are all in place, clone nested closures. */
208
209 for (ix = fpad; ix > 0; ix--) {
210 SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
211 if (namesv
212 && namesv != &PL_sv_undef
213 && !(SvFLAGS(namesv) & SVf_FAKE)
214 && *SvPVX(namesv) == '&'
215 && CvCLONE(ppad[ix]))
216 {
217 CV *kid = cv_clone((CV*)ppad[ix]);
218 SvREFCNT_dec(ppad[ix]);
219 CvCLONE_on(kid);
220 SvPADMY_on(kid);
221 npad[ix] = (SV*)kid;
222 }
223 }
224#endif
225 176
226 return newpadlist; 177 return newpadlist;
227} 178}
228 179
229STATIC void 180static void
230free_padlist (AV *padlist) 181free_padlist (pTHX_ AV *padlist)
231{ 182{
232 /* may be during global destruction */ 183 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 184 if (SvREFCNT (padlist))
234 { 185 {
235 I32 i = AvFILLp (padlist); 186 I32 i = AvFILLp (padlist);
… …
248 199
249 SvREFCNT_dec ((SV*)padlist); 200 SvREFCNT_dec ((SV*)padlist);
250 } 201 }
251} 202}
252 203
253STATIC int 204static int
254coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 205coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
255{ 206{
256 AV *padlist; 207 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 208 AV *av = (AV *)mg->mg_obj;
258 209
259 /* casting is fun. */ 210 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 211 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 212 free_padlist (aTHX_ padlist);
213
214 SvREFCNT_dec (av);
215
216 return 0;
262} 217}
263 218
264#define PERL_MAGIC_coro PERL_MAGIC_ext 219#define PERL_MAGIC_coro PERL_MAGIC_ext
265 220
266static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 221static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
267 222
268/* the next two functions merely cache the padlists */ 223/* the next two functions merely cache the padlists */
269STATIC void 224static void
270get_padlist (CV *cv) 225get_padlist (pTHX_ CV *cv)
271{ 226{
272 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 227 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
273 228
274 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 229 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
275 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 230 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
276 else 231 else
232 {
233#if 0
234 /* this should work - but it doesn't :( */
235 CV *cp = Perl_cv_clone (aTHX_ cv);
236 CvPADLIST (cv) = CvPADLIST (cp);
237 CvPADLIST (cp) = 0;
238 SvREFCNT_dec (cp);
239#else
277 CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); 240 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
241#endif
242 }
278} 243}
279 244
280STATIC void 245static void
281put_padlist (CV *cv) 246put_padlist (pTHX_ CV *cv)
282{ 247{
283 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 248 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
284 249
285 if (!mg) 250 if (!mg)
286 { 251 {
… …
312 PL_mainstack = c->mainstack; 277 PL_mainstack = c->mainstack;
313 PL_stack_sp = c->stack_sp; 278 PL_stack_sp = c->stack_sp;
314 PL_op = c->op; 279 PL_op = c->op;
315 PL_curpad = c->curpad; 280 PL_curpad = c->curpad;
316 PL_comppad = c->comppad; 281 PL_comppad = c->comppad;
282 PL_compcv = c->compcv;
317 PL_stack_base = c->stack_base; 283 PL_stack_base = c->stack_base;
318 PL_stack_max = c->stack_max; 284 PL_stack_max = c->stack_max;
319 PL_tmps_stack = c->tmps_stack; 285 PL_tmps_stack = c->tmps_stack;
320 PL_tmps_floor = c->tmps_floor; 286 PL_tmps_floor = c->tmps_floor;
321 PL_tmps_ix = c->tmps_ix; 287 PL_tmps_ix = c->tmps_ix;
… …
327 PL_scopestack_ix = c->scopestack_ix; 293 PL_scopestack_ix = c->scopestack_ix;
328 PL_scopestack_max = c->scopestack_max; 294 PL_scopestack_max = c->scopestack_max;
329 PL_savestack = c->savestack; 295 PL_savestack = c->savestack;
330 PL_savestack_ix = c->savestack_ix; 296 PL_savestack_ix = c->savestack_ix;
331 PL_savestack_max = c->savestack_max; 297 PL_savestack_max = c->savestack_max;
298#if PERL_VERSION < 9
332 PL_retstack = c->retstack; 299 PL_retstack = c->retstack;
333 PL_retstack_ix = c->retstack_ix; 300 PL_retstack_ix = c->retstack_ix;
334 PL_retstack_max = c->retstack_max; 301 PL_retstack_max = c->retstack_max;
302#endif
303 PL_curpm = c->curpm;
335 PL_curcop = c->curcop; 304 PL_curcop = c->curcop;
336 PL_top_env = c->top_env; 305 PL_top_env = c->top_env;
337 306
338 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 307 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
339 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 308 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
… …
348 { 317 {
349 AV *padlist = (AV *)POPs; 318 AV *padlist = (AV *)POPs;
350 319
351 if (padlist) 320 if (padlist)
352 { 321 {
353 put_padlist (cv); /* mark this padlist as available */ 322 put_padlist (aTHX_ cv); /* mark this padlist as available */
354 CvPADLIST(cv) = padlist; 323 CvPADLIST(cv) = padlist;
355#ifdef USE_THREADS
356 /*CvOWNER(cv) = (struct perl_thread *)POPs;*/
357#endif
358 } 324 }
359 325
360 ++CvDEPTH(cv); 326 ++CvDEPTH(cv);
361 } 327 }
362 328
… …
389 if (CxTYPE(cx) == CXt_SUB) 355 if (CxTYPE(cx) == CXt_SUB)
390 { 356 {
391 CV *cv = cx->blk_sub.cv; 357 CV *cv = cx->blk_sub.cv;
392 if (CvDEPTH(cv)) 358 if (CvDEPTH(cv))
393 { 359 {
394#ifdef USE_THREADS
395 /*XPUSHs ((SV *)CvOWNER(cv));*/
396 /*CvOWNER(cv) = 0;*/
397 /*error must unlock this cv etc.. etc...*/
398#endif
399 EXTEND (SP, CvDEPTH(cv)*2); 360 EXTEND (SP, CvDEPTH(cv)*2);
400 361
401 while (--CvDEPTH(cv)) 362 while (--CvDEPTH(cv))
402 { 363 {
403 /* this tells the restore code to increment CvDEPTH */ 364 /* this tells the restore code to increment CvDEPTH */
… …
406 } 367 }
407 368
408 PUSHs ((SV *)CvPADLIST(cv)); 369 PUSHs ((SV *)CvPADLIST(cv));
409 PUSHs ((SV *)cv); 370 PUSHs ((SV *)cv);
410 371
411 get_padlist (cv); /* this is a monster */ 372 get_padlist (aTHX_ cv);
412 } 373 }
413 } 374 }
414#ifdef CXt_FORMAT 375#ifdef CXt_FORMAT
415 else if (CxTYPE(cx) == CXt_FORMAT) 376 else if (CxTYPE(cx) == CXt_FORMAT)
416 { 377 {
… …
444 c->mainstack = PL_mainstack; 405 c->mainstack = PL_mainstack;
445 c->stack_sp = PL_stack_sp; 406 c->stack_sp = PL_stack_sp;
446 c->op = PL_op; 407 c->op = PL_op;
447 c->curpad = PL_curpad; 408 c->curpad = PL_curpad;
448 c->comppad = PL_comppad; 409 c->comppad = PL_comppad;
410 c->compcv = PL_compcv;
449 c->stack_base = PL_stack_base; 411 c->stack_base = PL_stack_base;
450 c->stack_max = PL_stack_max; 412 c->stack_max = PL_stack_max;
451 c->tmps_stack = PL_tmps_stack; 413 c->tmps_stack = PL_tmps_stack;
452 c->tmps_floor = PL_tmps_floor; 414 c->tmps_floor = PL_tmps_floor;
453 c->tmps_ix = PL_tmps_ix; 415 c->tmps_ix = PL_tmps_ix;
… …
459 c->scopestack_ix = PL_scopestack_ix; 421 c->scopestack_ix = PL_scopestack_ix;
460 c->scopestack_max = PL_scopestack_max; 422 c->scopestack_max = PL_scopestack_max;
461 c->savestack = PL_savestack; 423 c->savestack = PL_savestack;
462 c->savestack_ix = PL_savestack_ix; 424 c->savestack_ix = PL_savestack_ix;
463 c->savestack_max = PL_savestack_max; 425 c->savestack_max = PL_savestack_max;
426#if PERL_VERSION < 9
464 c->retstack = PL_retstack; 427 c->retstack = PL_retstack;
465 c->retstack_ix = PL_retstack_ix; 428 c->retstack_ix = PL_retstack_ix;
466 c->retstack_max = PL_retstack_max; 429 c->retstack_max = PL_retstack_max;
430#endif
431 c->curpm = PL_curpm;
467 c->curcop = PL_curcop; 432 c->curcop = PL_curcop;
468 c->top_env = PL_top_env; 433 c->top_env = PL_top_env;
469} 434}
470 435
471/* 436/*
472 * allocate various perl stacks. This is an exact copy 437 * allocate various perl stacks. This is an exact copy
473 * of perl.c:init_stacks, except that it uses less memory 438 * of perl.c:init_stacks, except that it uses less memory
474 * on the (sometimes correct) assumption that coroutines do 439 * on the (sometimes correct) assumption that coroutines do
475 * not usually need a lot of stackspace. 440 * not usually need a lot of stackspace.
476 */ 441 */
477STATIC void 442static void
478coro_init_stacks (pTHX) 443coro_init_stacks (pTHX)
479{ 444{
445 LOCK;
446
480 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 447 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
481 PL_curstackinfo->si_type = PERLSI_MAIN; 448 PL_curstackinfo->si_type = PERLSI_MAIN;
482 PL_curstack = PL_curstackinfo->si_stack; 449 PL_curstack = PL_curstackinfo->si_stack;
483 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 450 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
484 451
… …
505 472
506 New(54,PL_savestack,96,ANY); 473 New(54,PL_savestack,96,ANY);
507 PL_savestack_ix = 0; 474 PL_savestack_ix = 0;
508 PL_savestack_max = 96; 475 PL_savestack_max = 96;
509 476
477#if PERL_VERSION < 9
510 New(54,PL_retstack,8,OP*); 478 New(54,PL_retstack,8,OP*);
511 PL_retstack_ix = 0; 479 PL_retstack_ix = 0;
512 PL_retstack_max = 8; 480 PL_retstack_max = 8;
481#endif
482
483 UNLOCK;
513} 484}
514 485
515/* 486/*
516 * destroy the stacks, the callchain etc... 487 * destroy the stacks, the callchain etc...
517 */ 488 */
518STATIC void 489static void
519destroy_stacks(pTHX) 490destroy_stacks(pTHX)
520{ 491{
521 if (!IN_DESTRUCT) 492 if (!IN_DESTRUCT)
522 { 493 {
523 /* is this ugly, I ask? */ 494 /* is this ugly, I ask? */
524 LEAVE_SCOPE (0); 495 LEAVE_SCOPE (0);
525 496
526 /* sure it is, but more important: is it correct?? :/ */ 497 /* sure it is, but more important: is it correct?? :/ */
527 FREETMPS; 498 FREETMPS;
499
500 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
528 } 501 }
529 502
530 while (PL_curstackinfo->si_next) 503 while (PL_curstackinfo->si_next)
531 PL_curstackinfo = PL_curstackinfo->si_next; 504 PL_curstackinfo = PL_curstackinfo->si_next;
532 505
533 while (PL_curstackinfo) 506 while (PL_curstackinfo)
534 { 507 {
535 PERL_SI *p = PL_curstackinfo->si_prev; 508 PERL_SI *p = PL_curstackinfo->si_prev;
536 509
537 { 510 { /*D*//*remove*/
538 dSP; 511 dSP;
539 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 512 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
540 PUTBACK; /* possibly superfluous */ 513 PUTBACK; /* possibly superfluous */
541 } 514 }
542 515
543 if (!IN_DESTRUCT) 516 if (!IN_DESTRUCT)
544 { 517 {
545 dounwind(-1); 518 dounwind (-1);/*D*//*remove*/
546 SvREFCNT_dec(PL_curstackinfo->si_stack); 519 SvREFCNT_dec (PL_curstackinfo->si_stack);
547 } 520 }
548 521
549 Safefree(PL_curstackinfo->si_cxstack); 522 Safefree (PL_curstackinfo->si_cxstack);
550 Safefree(PL_curstackinfo); 523 Safefree (PL_curstackinfo);
551 PL_curstackinfo = p; 524 PL_curstackinfo = p;
552 } 525 }
553 526
554 Safefree(PL_tmps_stack); 527 Safefree (PL_tmps_stack);
555 Safefree(PL_markstack); 528 Safefree (PL_markstack);
556 Safefree(PL_scopestack); 529 Safefree (PL_scopestack);
557 Safefree(PL_savestack); 530 Safefree (PL_savestack);
531#if PERL_VERSION < 9
558 Safefree(PL_retstack); 532 Safefree (PL_retstack);
559}
560
561static void
562allocate_stack (Coro__State ctx, int alloc)
563{
564 coro_stack *stack;
565
566 New (0, stack, 1, coro_stack);
567
568 stack->refcnt = 1;
569 stack->usecnt = 1;
570 stack->gencnt = ctx->gencnt = 0;
571 if (alloc)
572 {
573#if HAVE_MMAP
574 stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
575 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
576 if (stack->sptr == (void *)-1)
577#endif 533#endif
578 {
579 /*FIXME*//*D*//* reasonable stack size! */
580 stack->ssize = - (8192 * sizeof (long));
581 New (0, stack->sptr, 8192, long);
582 }
583 }
584 else
585 stack->sptr = 0;
586
587 ctx->stack = stack;
588} 534}
589 535
590static void 536static void
591deallocate_stack (Coro__State ctx) 537setup_coro (struct coro *coro)
592{
593 coro_stack *stack = ctx->stack;
594
595 ctx->stack = 0;
596
597 if (stack)
598 {
599 if (!--stack->refcnt)
600 {
601#ifdef HAVE_MMAP
602 if (stack->ssize > 0 && stack->sptr)
603 munmap (stack->sptr, stack->ssize);
604 else
605#endif
606 Safefree (stack->sptr);
607
608 Safefree (stack);
609 }
610 else if (ctx->gencnt == stack->gencnt)
611 --stack->usecnt;
612 }
613}
614
615static void
616setup_coro (void *arg)
617{ 538{
618 /* 539 /*
619 * emulate part of the perl startup here. 540 * emulate part of the perl startup here.
620 */ 541 */
542 dTHX;
621 dSP; 543 dSP;
622 Coro__State ctx = (Coro__State)arg; 544 UNOP myop;
623 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); 545 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
624 546
625 coro_init_stacks (aTHX); 547 coro_init_stacks (aTHX);
626 /*PL_curcop = 0;*/ 548 /*PL_curcop = 0;*/
627 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 549 /*PL_in_eval = PL_in_eval;*/ /* inherit */
628 SvREFCNT_dec (GvAV (PL_defgv)); 550 SvREFCNT_dec (GvAV (PL_defgv));
629 GvAV (PL_defgv) = ctx->args; ctx->args = 0; 551 GvAV (PL_defgv) = coro->args; coro->args = 0;
630 552
631 SPAGAIN; 553 SPAGAIN;
632 554
633 if (ctx->stack) 555 Zero (&myop, 1, UNOP);
634 { 556 myop.op_next = Nullop;
635 ctx->cursp = 0; 557 myop.op_flags = OPf_WANT_VOID;
636 558
559 PL_op = (OP *)&myop;
560
637 PUSHMARK(SP); 561 PUSHMARK(SP);
562 XPUSHs (sub_init);
638 PUTBACK; 563 PUTBACK;
639 (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); 564 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
565 SPAGAIN;
640 566
641 if (SvTRUE (ERRSV)) 567 ENTER; /* necessary e.g. for dounwind */
642 croak (NULL); 568}
643 else 569
644 croak ("FATAL: CCTXT coroutine returned!"); 570static void
571transfer_tail ()
572{
573 if (coro_mortal)
574 {
575 SvREFCNT_dec (coro_mortal);
576 coro_mortal = 0;
645 } 577 }
646 else
647 {
648 UNOP myop;
649 578
650 PL_op = (OP *)&myop; 579 UNLOCK;
651
652 Zero(&myop, 1, UNOP);
653 myop.op_next = Nullop;
654 myop.op_flags = OPf_WANT_VOID;
655
656 PUSHMARK(SP);
657 XPUSHs (sub_init);
658 /*
659 * the next line is slightly wrong, as PL_op->op_next
660 * is actually being executed so we skip the first op.
661 * that doesn't matter, though, since it is only
662 * pp_nextstate and we never return...
663 * ah yes, and I don't care anyways ;)
664 */
665 PUTBACK;
666 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
667 SPAGAIN;
668
669 ENTER; /* necessary e.g. for dounwind */
670 }
671} 580}
672 581
673static void 582static void
674continue_coro (void *arg) 583coro_run (void *arg)
675{ 584{
676 /* 585 /*
677 * this is a _very_ stripped down perl interpreter ;) 586 * this is a _very_ stripped down perl interpreter ;)
678 */ 587 */
679 Coro__State ctx = (Coro__State)arg; 588 dTHX;
680 JMPENV coro_start_env;
681 589
590 transfer_tail ();
591
682 PL_top_env = &ctx->start_env; 592 PL_top_env = &PL_start_env;
683 593 PL_restartop = PL_op;
684 ctx->cursp = 0; 594 /* somebody will hit me for both perl_run and PL_restart_top */
685 PL_op = PL_op->op_next; 595 perl_run (aTHX_ PERL_GET_CONTEXT);
686 CALLRUNOPS(aTHX);
687 596
688 abort (); 597 abort ();
689} 598}
690 599
691STATIC void 600static coro_stack *
601stack_new ()
602{
603 coro_stack *stack;
604
605 New (0, stack, 1, coro_stack);
606
607#if HAVE_MMAP
608
609 stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
610 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
611
612 if (stack->sptr == (void *)-1)
613 {
614 fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");
615 _exit (EXIT_FAILURE);
616 }
617
618 mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
619
620#else
621
622 stack->ssize = STACKSIZE * (long)sizeof (long);
623 New (0, stack->sptr, STACKSIZE, long);
624
625 if (!stack->sptr)
626 {
627 fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
628 _exit (EXIT_FAILURE);
629 }
630
631#endif
632
633 coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
634
635 return stack;
636}
637
638static void
639stack_free (coro_stack *stack)
640{
641 if (!stack || stack == main_stack)
642 return;
643
644#if HAVE_MMAP
645 munmap (stack->sptr, stack->ssize);
646#else
647 Safefree (stack->sptr);
648#endif
649
650 Safefree (stack);
651}
652
653static coro_stack *stack_first;
654
655static coro_stack *
656stack_get ()
657{
658 coro_stack *stack;
659
660 if (stack_first)
661 {
662 stack = stack_first;
663 stack_first = stack->next;
664 }
665 else
666 {
667 stack = stack_new ();
668 PL_op = PL_op->op_next;
669 }
670
671 return stack;
672}
673
674static void
675stack_put (coro_stack *stack)
676{
677 stack->next = stack_first;
678 stack_first = stack;
679}
680
681/* never call directly, always through the coro_state_transfer global variable */
682static void
692transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 683transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags)
693{ 684{
694 dSTACKLEVEL; 685 dSTACKLEVEL;
695 static struct coro *xnext; 686
687 /* sometimes transfer is only called to set idle_sp */
688 if (!prev->stack->idle_sp)
689 prev->stack->idle_sp = stacklevel;
690
691 LOCK;
696 692
697 if (prev != next) 693 if (prev != next)
698 { 694 {
699 xnext = next; 695 coro_stack *prev_stack = prev->stack;
696
697 /* possibly "free" the stack */
698 if (0 && prev_stack->idle_sp == stacklevel)
699 {
700 stack_put (prev_stack);
701 prev->stack = 0;
702 }
700 703
701 if (next->mainstack) 704 if (next->mainstack)
702 { 705 {
706 /* coroutine already started */
703 SAVE (prev, flags); 707 SAVE (prev, flags);
704 LOAD (next); 708 LOAD (next);
705
706 /* mark this state as in-use */
707 next->mainstack = 0;
708 next->tmps_ix = -2;
709
710 /* stacklevel changed? if yes, grab the stack for us! */
711 if (flags & TRANSFER_SAVE_CCTXT)
712 {
713 if (!prev->stack)
714 allocate_stack (prev, 0);
715 else if (prev->cursp != stacklevel
716 && prev->stack->usecnt > 1)
717 {
718 prev->gencnt = ++prev->stack->gencnt;
719 prev->stack->usecnt = 1;
720 }
721
722 /* has our stack been invalidated? */
723 if (next->stack && next->stack->gencnt != next->gencnt)
724 {
725 deallocate_stack (next);
726 allocate_stack (next, 1);
727 coro_create (&(next->stack->cctx),
728 continue_coro, (void *)next,
729 next->stack->sptr, labs (next->stack->ssize));
730 }
731
732 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
733 /* don't add any code here */
734 }
735
736 } 709 }
737 else if (next->tmps_ix == -2)
738 croak ("tried to transfer to running coroutine");
739 else 710 else
740 { 711 {
712 /* need to start coroutine */
741 SAVE (prev, -1); /* first get rid of the old state */ 713 /* first get rid of the old state */
742 714 SAVE (prev, -1);
743 if (flags & TRANSFER_SAVE_CCTXT) 715 /* setup coroutine call */
744 {
745 if (!prev->stack)
746 allocate_stack (prev, 0);
747
748 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
749 {
750 PL_top_env = &next->start_env;
751
752 setup_coro (next);
753
754 prev->stack->refcnt++;
755 prev->stack->usecnt++;
756 next->stack = prev->stack;
757 next->gencnt = prev->gencnt;
758 }
759 else
760 {
761 assert (!next->stack);
762 allocate_stack (next, 1);
763 coro_create (&(next->stack->cctx),
764 setup_coro, (void *)next,
765 next->stack->sptr, labs (next->stack->ssize));
766 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
767 /* don't add any code here */
768 }
769 }
770 else
771 setup_coro (next); 716 setup_coro (next);
717 /* need to change stack from main_stack to real one */
718 next->stack = 0;
772 } 719 }
773 720
774 /* 721 if (!next->stack)
775 * xnext is now either prev or next, depending on wether 722 next->stack = stack_get ();
776 * we switched the c stack or not. that's why I use a global 723
777 * variable, that should become thread-specific at one point. 724 if (prev_stack != next->stack)
778 */ 725 coro_transfer (&prev_stack->cctx, &next->stack->cctx);
779 xnext->cursp = stacklevel;
780 } 726 }
781 727
782 if (coro_mortal) 728 transfer_tail ();
729}
730
731/* use this function pointer to call the above function */
732/* this is done to increase chances of the compiler not inlining the call */
733void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl;
734
735static void
736coro_state_destroy (struct coro *coro)
737{
738 if (coro->refcnt--)
739 return;
740
741 if (coro->mainstack && coro->mainstack != main_mainstack)
783 { 742 {
784 SvREFCNT_dec (coro_mortal); 743 struct coro temp;
744
745 SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
746 LOAD (aTHX_ coro);
747
748 destroy_stacks (aTHX);
749
750 LOAD ((&temp)); /* this will get rid of defsv etc.. */
751
785 coro_mortal = 0; 752 coro->mainstack = 0;
786 } 753 }
787}
788 754
789#define SV_CORO(sv,func) \ 755 stack_free (coro->stack);
790 do { \ 756 SvREFCNT_dec (coro->args);
791 if (SvROK (sv)) \ 757 Safefree (coro);
792 sv = SvRV (sv); \ 758}
793 \
794 if (SvTYPE(sv) == SVt_PVHV) \
795 { \
796 HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
797 \
798 if (!he) \
799 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
800 \
801 (sv) = SvRV (HeVAL(he)); \
802 } \
803 \
804 /* must also be changed inside Coro::Cont::yield */ \
805 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
806 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
807 \
808 } while(0)
809 759
810#define SvSTATE(sv) (struct coro *)SvIV (sv)
811
812static void 760static int
761coro_state_clear (SV *sv, MAGIC *mg)
762{
763 struct coro *coro = (struct coro *)mg->mg_ptr;
764 mg->mg_ptr = 0;
765
766 coro_state_destroy (coro);
767
768 return 0;
769}
770
771static int
772coro_state_dup (MAGIC *mg, CLONE_PARAMS *params)
773{
774 struct coro *coro = (struct coro *)mg->mg_ptr;
775
776 ++coro->refcnt;
777
778 return 0;
779}
780
781static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
782
783static struct coro *
784SvSTATE (SV *coro)
785{
786 HV *stash;
787 MAGIC *mg;
788
789 if (SvROK (coro))
790 coro = SvRV (coro);
791
792 stash = SvSTASH (coro);
793 if (stash != coro_stash && stash != coro_state_stash)
794 {
795 /* very slow, but rare, check */
796 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
797 croak ("Coro::State object required");
798 }
799
800 mg = SvMAGIC (coro);
801 assert (mg->mg_type == PERL_MAGIC_ext);
802 return (struct coro *)mg->mg_ptr;
803}
804
805static void
813api_transfer(pTHX_ SV *prev, SV *next, int flags) 806api_transfer (pTHX_ SV *prev, SV *next, int flags)
814{ 807{
815 SV_CORO (prev, "Coro::transfer");
816 SV_CORO (next, "Coro::transfer");
817
818 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); 808 coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
819} 809}
820 810
821/** Coro ********************************************************************/ 811/** Coro ********************************************************************/
822 812
823#define PRIO_MAX 3 813#define PRIO_MAX 3
… …
827#define PRIO_IDLE -3 817#define PRIO_IDLE -3
828#define PRIO_MIN -4 818#define PRIO_MIN -4
829 819
830/* for Coro.pm */ 820/* for Coro.pm */
831static GV *coro_current, *coro_idle; 821static GV *coro_current, *coro_idle;
832static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; 822static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
833static int coro_nready; 823static int coro_nready;
834 824
835static void 825static void
836coro_enq (SV *sv) 826coro_enq (pTHX_ SV *sv)
837{ 827{
828 int prio;
829
838 if (SvTYPE (sv) == SVt_PVHV) 830 if (SvTYPE (sv) != SVt_PVHV)
839 {
840 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
841 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
842
843 prio = prio > PRIO_MAX ? PRIO_MAX
844 : prio < PRIO_MIN ? PRIO_MIN
845 : prio;
846
847 av_push (coro_ready [prio - PRIO_MIN], sv);
848 coro_nready++;
849
850 return;
851 }
852
853 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 831 croak ("Coro::ready tried to enqueue something that is not a coroutine");
832
833 prio = SvSTATE (sv)->prio;
834
835 av_push (coro_ready [prio - PRIO_MIN], sv);
836 coro_nready++;
854} 837}
855 838
856static SV * 839static SV *
857coro_deq (int min_prio) 840coro_deq (pTHX_ int min_prio)
858{ 841{
859 int prio = PRIO_MAX - PRIO_MIN; 842 int prio = PRIO_MAX - PRIO_MIN;
860 843
861 min_prio -= PRIO_MIN; 844 min_prio -= PRIO_MIN;
862 if (min_prio < 0) 845 if (min_prio < 0)
863 min_prio = 0; 846 min_prio = 0;
864 847
865 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 848 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
866 if (av_len (coro_ready[prio]) >= 0) 849 if (AvFILLp (coro_ready [prio]) >= 0)
867 { 850 {
868 coro_nready--; 851 coro_nready--;
869 return av_shift (coro_ready[prio]); 852 return av_shift (coro_ready [prio]);
870 } 853 }
871 854
872 return 0; 855 return 0;
873} 856}
874 857
875static void 858static void
876api_ready (SV *coro) 859api_ready (SV *coro)
877{ 860{
861 dTHX;
862
878 if (SvROK (coro)) 863 if (SvROK (coro))
879 coro = SvRV (coro); 864 coro = SvRV (coro);
880 865
866 LOCK;
881 coro_enq (SvREFCNT_inc (coro)); 867 coro_enq (aTHX_ SvREFCNT_inc (coro));
868 UNLOCK;
882} 869}
883 870
884static void 871static void
885api_schedule (void) 872api_schedule (void)
886{ 873{
874 dTHX;
875
887 SV *prev, *next; 876 SV *prev, *next;
888
889 prev = SvRV (GvSV (coro_current)); 877 SV *current = GvSV (coro_current);
878
879 for (;;)
880 {
881 LOCK;
882
890 next = coro_deq (PRIO_MIN); 883 next = coro_deq (aTHX_ PRIO_MIN);
891 884
892 if (!next) 885 if (next)
893 next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); 886 break;
887
888 UNLOCK;
889
890 {
891 dSP;
892
893 ENTER;
894 SAVETMPS;
895
896 PUSHMARK (SP);
897 PUTBACK;
898 call_sv (GvSV (coro_idle), G_DISCARD);
899
900 FREETMPS;
901 LEAVE;
902 }
903 }
904
905 prev = SvRV (current);
906 SvRV (current) = next;
894 907
895 /* free this only after the transfer */ 908 /* free this only after the transfer */
896 coro_mortal = prev; 909 coro_mortal = prev;
897 SV_CORO (prev, "Coro::schedule");
898 910
899 SvRV (GvSV (coro_current)) = next; 911 UNLOCK;
900 912
901 SV_CORO (next, "Coro::schedule");
902
903 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), 913 coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
904 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
905} 914}
915
916static int coro_cede_self;
906 917
907static void 918static void
908api_cede (void) 919api_cede (void)
909{ 920{
921 dTHX;
910 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); 922 SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
923
924 LOCK;
925
926 if (coro_cede_self)
927 {
928 AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
929 av_unshift (runqueue, 1);
930 av_store (runqueue, 0, current);
931 coro_nready++;
932 coro_cede_self = 0;
933 }
934 else
935 coro_enq (aTHX_ current);
936
937 UNLOCK;
911 938
912 api_schedule (); 939 api_schedule ();
913} 940}
914 941
915MODULE = Coro::State PACKAGE = Coro::State 942MODULE = Coro::State PACKAGE = Coro::State
916 943
917PROTOTYPES: ENABLE 944PROTOTYPES: DISABLE
918 945
919BOOT: 946BOOT:
920{ /* {} necessary for stoopid perl-5.6.x */ 947{
921 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 948#ifdef USE_ITHREADS
922 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 949 MUTEX_INIT (&coro_mutex);
950#endif
951 BOOT_PAGESIZE;
952
923 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 953 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
924 954
925 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 955 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
926 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 956 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
927 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 957 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
928 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
929
930 if (!padlist_cache)
931 padlist_cache = newHV ();
932 958
933 main_mainstack = PL_mainstack; 959 main_mainstack = PL_mainstack;
934 960
935 coroapi.ver = CORO_API_VERSION; 961 coroapi.ver = CORO_API_VERSION;
936 coroapi.transfer = api_transfer; 962 coroapi.transfer = api_transfer;
937}
938 963
939Coro::State 964 Newz (0, main_stack, 1, coro_stack);
940_newprocess(args) 965 main_stack->idle_sp = (void *)-1;
941 SV * args 966
942 PROTOTYPE: $ 967 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
968}
969
970SV *
971new (char *klass, ...)
943 CODE: 972 CODE:
944 Coro__State coro; 973{
974 struct coro *coro;
975 HV *hv;
976 int i;
945 977
946 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
947 croak ("Coro::State::_newprocess expects an arrayref");
948
949 Newz (0, coro, 1, struct coro); 978 Newz (0, coro, 1, struct coro);
979 coro->args = newAV ();
950 980
951 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 981 hv = newHV ();
982 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
983 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
984
985 av_push (coro->args, newSVsv (RETVAL));
986 for (i = 1; i < items; i++)
987 av_push (coro->args, newSVsv (ST (i)));
988
989 coro->stack = main_stack;
952 coro->mainstack = 0; /* actual work is done inside transfer */ 990 /*coro->mainstack = 0; *//*actual work is done inside transfer */
953 coro->stack = 0; 991 /*coro->stack = 0;*/
954 992}
955 /* same as JMPENV_BOOTSTRAP */
956 /* we might be able to recycle start_env, but safe is safe */
957 //Zero(&coro->start_env, 1, JMPENV);
958 coro->start_env.je_ret = -1;
959 coro->start_env.je_mustcatch = TRUE;
960
961 RETVAL = coro;
962 OUTPUT: 993 OUTPUT:
963 RETVAL 994 RETVAL
964 995
965void 996void
966transfer(prev, next, flags) 997transfer (prev, next, flags)
967 SV *prev 998 SV *prev
968 SV *next 999 SV *next
969 int flags 1000 int flags
970 PROTOTYPE: @
971 CODE: 1001 CODE:
972 PUTBACK; 1002 PUTBACK;
973 SV_CORO (next, "Coro::transfer");
974 SV_CORO (prev, "Coro::transfer");
975 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); 1003 coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
976 SPAGAIN; 1004 SPAGAIN;
977 1005
1006int
1007prio (Coro::State coro, int newprio = 0)
1008 ALIAS:
1009 nice = 1
1010 CODE:
1011{
1012 RETVAL = coro->prio;
1013
1014 if (items > 1)
1015 {
1016 if (ix)
1017 newprio += coro->prio;
1018
1019 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1020 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1021
1022 coro->prio = newprio;
1023 }
1024}
1025
978void 1026void
979DESTROY(coro) 1027_clear_idle_sp (Coro::State self)
980 Coro::State coro 1028 CODE:
981 CODE: 1029 self->stack->idle_sp = 0;
982
983 if (coro->mainstack && coro->mainstack != main_mainstack)
984 {
985 struct coro temp;
986
987 PUTBACK;
988 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
989 LOAD(aTHX_ coro);
990 SPAGAIN;
991
992 destroy_stacks (aTHX);
993
994 LOAD((&temp)); /* this will get rid of defsv etc.. */
995 SPAGAIN;
996
997 coro->mainstack = 0;
998 }
999
1000 deallocate_stack (coro);
1001 SvREFCNT_dec (coro->args);
1002 Safefree (coro);
1003 1030
1004void 1031void
1032_clone_state_from (SV *dst, SV *src)
1033 CODE:
1034{
1035 struct coro *coro_src = SvSTATE (src);
1036
1037 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1038
1039 ++coro_src->refcnt;
1040 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1041}
1042
1043void
1005_exit(code) 1044_exit (code)
1006 int code 1045 int code
1007 PROTOTYPE: $ 1046 PROTOTYPE: $
1008 CODE: 1047 CODE:
1009 _exit (code); 1048 _exit (code);
1010 1049
1011MODULE = Coro::State PACKAGE = Coro::Cont 1050MODULE = Coro::State PACKAGE = Coro::Cont
1012 1051
1013# this is slightly dirty (should expose a c-level api)
1014
1015void 1052void
1016yield(...) 1053yield (...)
1017 PROTOTYPE: @ 1054 PROTOTYPE: @
1018 CODE: 1055 CODE:
1019 static SV *returnstk; 1056{
1057 SV *yieldstack;
1020 SV *sv; 1058 SV *sv;
1021 AV *defav = GvAV (PL_defgv); 1059 AV *defav = GvAV (PL_defgv);
1022 struct coro *prev, *next; 1060 struct coro *prev, *next;
1023 1061
1024 if (!returnstk) 1062 yieldstack = *hv_fetch (
1025 returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); 1063 (HV *)SvRV (GvSV (coro_current)),
1064 "yieldstack", sizeof ("yieldstack") - 1,
1065 0
1066 );
1026 1067
1027 /* set up @_ -- ugly */ 1068 /* set up @_ -- ugly */
1028 av_clear (defav); 1069 av_clear (defav);
1029 av_fill (defav, items - 1); 1070 av_fill (defav, items - 1);
1030 while (items--) 1071 while (items--)
1031 av_store (defav, items, SvREFCNT_inc (ST(items))); 1072 av_store (defav, items, SvREFCNT_inc (ST(items)));
1032 1073
1033 mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1034 sv = av_pop ((AV *)SvRV (returnstk)); 1074 sv = av_pop ((AV *)SvRV (yieldstack));
1035 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); 1075 prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1036 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 1076 next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1037 SvREFCNT_dec (sv); 1077 SvREFCNT_dec (sv);
1038 1078
1039 transfer(aTHX_ prev, next, 0); 1079 coro_state_transfer (aTHX_ prev, next, 0);
1080}
1040 1081
1041MODULE = Coro::State PACKAGE = Coro 1082MODULE = Coro::State PACKAGE = Coro
1042 1083
1043# this is slightly dirty (should expose a c-level api)
1044
1045BOOT: 1084BOOT:
1046{ 1085{
1047 int i; 1086 int i;
1087
1048 HV *stash = gv_stashpv ("Coro", TRUE); 1088 coro_stash = gv_stashpv ("Coro", TRUE);
1049 1089
1050 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1090 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1091 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1092 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1093 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1094 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1095 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056 1096
1057 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); 1097 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1058 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); 1098 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1059 1099
1060 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1100 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
… …
1068 coroapi.ready = api_ready; 1108 coroapi.ready = api_ready;
1069 coroapi.nready = &coro_nready; 1109 coroapi.nready = &coro_nready;
1070 coroapi.current = coro_current; 1110 coroapi.current = coro_current;
1071 1111
1072 GCoroAPI = &coroapi; 1112 GCoroAPI = &coroapi;
1073 sv_setiv(sv, (IV)&coroapi); 1113 sv_setiv (sv, (IV)&coroapi);
1074 SvREADONLY_on(sv); 1114 SvREADONLY_on (sv);
1075 } 1115 }
1076} 1116}
1077 1117
1078#if !PERL_MICRO
1079
1080void 1118void
1081ready(self) 1119ready (SV *self)
1082 SV * self
1083 PROTOTYPE: $ 1120 PROTOTYPE: $
1084 CODE: 1121 CODE:
1085 api_ready (self); 1122 api_ready (self);
1086 1123
1087#endif
1088
1089int 1124int
1090nready(...) 1125nready (...)
1091 PROTOTYPE: 1126 PROTOTYPE:
1092 CODE: 1127 CODE:
1093 RETVAL = coro_nready; 1128 RETVAL = coro_nready;
1094 OUTPUT: 1129 OUTPUT:
1095 RETVAL 1130 RETVAL
1096 1131
1097void 1132void
1098schedule(...) 1133schedule (...)
1099 PROTOTYPE: 1134 PROTOTYPE:
1100 CODE: 1135 CODE:
1101 api_schedule (); 1136 api_schedule ();
1102 1137
1103void 1138void
1139_set_cede_self ()
1140 CODE:
1141 coro_cede_self = 1;
1142
1143void
1104cede(...) 1144cede (...)
1105 PROTOTYPE: 1145 PROTOTYPE:
1106 CODE: 1146 CODE:
1107 api_cede (); 1147 api_cede ();
1108 1148
1149MODULE = Coro::State PACKAGE = Coro::AIO
1150
1151SV *
1152_get_state ()
1153 CODE:
1154{
1155 struct {
1156 int errorno;
1157 int laststype;
1158 int laststatval;
1159 Stat_t statcache;
1160 } data;
1161
1162 data.errorno = errno;
1163 data.laststype = PL_laststype;
1164 data.laststatval = PL_laststatval;
1165 data.statcache = PL_statcache;
1166
1167 RETVAL = newSVpvn ((char *)&data, sizeof data);
1168}
1169 OUTPUT:
1170 RETVAL
1171
1172void
1173_set_state (char *data_)
1174 PROTOTYPE: $
1175 CODE:
1176{
1177 struct {
1178 int errorno;
1179 int laststype;
1180 int laststatval;
1181 Stat_t statcache;
1182 } *data = (void *)data_;
1183
1184 errno = data->errorno;
1185 PL_laststype = data->laststype;
1186 PL_laststatval = data->laststatval;
1187 PL_statcache = data->statcache;
1188}

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