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Comparing Coro/Coro/State.xs (file contents):
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "libcoro/coro.c" 1#include "libcoro/coro.c"
4 2
5#include "EXTERN.h" 3#include "EXTERN.h"
6#include "perl.h" 4#include "perl.h"
7#include "XSUB.h" 5#include "XSUB.h"
8 6
9#include "patchlevel.h" 7#include "patchlevel.h"
10 8
11#if PERL_VERSION < 6 9#include <stdio.h>
10#include <errno.h>
11#include <assert.h>
12
13#ifdef HAVE_MMAP
14# include <unistd.h>
15# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS
17# ifdef MAP_ANON
18# define MAP_ANONYMOUS MAP_ANON
19# else
20# undef HAVE_MMAP
21# endif
22# endif
23# include <limits.h>
24# ifndef PAGESIZE
25# define PAGESIZE pagesize
26# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
27static long pagesize;
28# else
29# define BOOT_PAGESIZE (void)0
30# endif
31#else
32# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0
34#endif
35
36#if USE_VALGRIND
37# include <valgrind/valgrind.h>
38# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39#else
40# define REGISTER_STACK(cctx,start,end)
41#endif
42
43/* the maximum number of idle cctx that will be pooled */
44#define MAX_IDLE_CCTX 8
45
46#define PERL_VERSION_ATLEAST(a,b,c) \
47 (PERL_REVISION > (a) \
48 || (PERL_REVISION == (a) \
49 && (PERL_VERSION > (b) \
50 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
51
52#if !PERL_VERSION_ATLEAST (5,6,0)
12# ifndef PL_ppaddr 53# ifndef PL_ppaddr
13# define PL_ppaddr ppaddr 54# define PL_ppaddr ppaddr
14# endif 55# endif
15# ifndef call_sv 56# ifndef call_sv
16# define call_sv perl_call_sv 57# define call_sv perl_call_sv
… …
27# ifndef IS_PADCONST 68# ifndef IS_PADCONST
28# define IS_PADCONST(v) 0 69# define IS_PADCONST(v) 0
29# endif 70# endif
30#endif 71#endif
31 72
32#include <errno.h> 73/* 5.8.7 */
33 74#ifndef SvRV_set
34#ifdef HAVE_MMAP 75# define SvRV_set(s,v) SvRV(s) = (v)
35# include <unistd.h>
36# include <sys/mman.h>
37# ifndef MAP_ANONYMOUS
38# ifdef MAP_ANON
39# define MAP_ANONYMOUS MAP_ANON
40# else
41# undef HAVE_MMAP
42# endif
43# endif 76#endif
44#endif
45 77
46#define SUB_INIT "Coro::State::initialize" 78#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47#define UCORO_STATE "_coro_state" 79# undef STACKGUARD
80#endif
81
82#ifndef STACKGUARD
83# define STACKGUARD 0
84#endif
85
86/* prefer perl internal functions over our own? */
87#ifndef PREFER_PERL_FUNCTIONS
88# define PREFER_PERL_FUNCTIONS 0
89#endif
48 90
49/* The next macro should declare a variable stacklevel that contains and approximation 91/* The next macro should declare a variable stacklevel that contains and approximation
50 * to the current C stack pointer. Its property is that it changes with each call 92 * to the current C stack pointer. Its property is that it changes with each call
51 * and should be unique. */ 93 * and should be unique. */
94#define dSTACKLEVEL int stacklevel
52#define dSTACKLEVEL void *stacklevel = &stacklevel 95#define STACKLEVEL ((void *)&stacklevel)
53 96
54#define IN_DESTRUCT (PL_main_cv == Nullcv) 97#define IN_DESTRUCT (PL_main_cv == Nullcv)
55 98
56#define labs(l) ((l) >= 0 ? (l) : -(l)) 99#if __GNUC__ >= 3
100# define attribute(x) __attribute__(x)
101# define BARRIER __asm__ __volatile__ ("" : : : "memory")
102#else
103# define attribute(x)
104# define BARRIER
105#endif
106
107#define NOINLINE attribute ((noinline))
57 108
58#include "CoroAPI.h" 109#include "CoroAPI.h"
59 110
60#ifdef USE_ITHREADS 111#ifdef USE_ITHREADS
61static perl_mutex coro_mutex; 112static perl_mutex coro_mutex;
… …
64#else 115#else
65# define LOCK (void)0 116# define LOCK (void)0
66# define UNLOCK (void)0 117# define UNLOCK (void)0
67#endif 118#endif
68 119
120/* helper storage struct for Coro::AIO */
121struct io_state
122{
123 int errorno;
124 I32 laststype;
125 int laststatval;
126 Stat_t statcache;
127};
128
69static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
70static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
71static HV *coro_state_stash; 131static HV *coro_state_stash, *coro_stash;
72static SV *ucoro_state_sv;
73static U32 ucoro_state_hash;
74static SV *coro_mortal; /* will be freed after next transfer */ 132static SV *coro_mortal; /* will be freed after next transfer */
75 133
76/* this is actually not only the c stack but also c registers etc... */ 134static struct coro_cctx *cctx_first;
135static int cctx_count, cctx_idle;
136
137/* this is a structure representing a c-level coroutine */
77typedef struct { 138typedef struct coro_cctx {
78 int refcnt; /* pointer reference counter */ 139 struct coro_cctx *next;
79 int usecnt; /* shared by how many coroutines */
80 int gencnt; /* generation counter */
81 140
141 /* the stack */
142 void *sptr;
143 ssize_t ssize; /* positive == mmap, otherwise malloc */
144
145 /* cpu state */
146 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148 JMPENV *top_env;
82 coro_context cctx; 149 coro_context cctx;
83 150
84 void *sptr; 151 int inuse;
85 long ssize; /* positive == mmap, otherwise malloc */
86} coro_stack;
87 152
153#if USE_VALGRIND
154 int valgrind_id;
155#endif
156} coro_cctx;
157
158enum {
159 CF_RUNNING = 0x0001, /* coroutine is running */
160 CF_READY = 0x0002, /* coroutine is ready */
161 CF_NEW = 0x0004, /* has never been switched to */
162 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
163};
164
165/* this is a structure representing a perl-level coroutine */
88struct coro { 166struct coro {
89 /* the top-level JMPENV for each coroutine, needed to catch dies. */ 167 /* the c coroutine allocated to this perl coroutine, if any */
90 JMPENV start_env; 168 coro_cctx *cctx;
91
92 /* the optional C context */
93 coro_stack *stack;
94 void *cursp;
95 int gencnt;
96
97 /* optionally saved, might be zero */
98 AV *defav;
99 SV *defsv;
100 SV *errsv;
101
102 /* saved global state not related to stacks */
103 U8 dowarn;
104 I32 in_eval;
105
106 /* the stacks and related info (callchain etc..) */
107 PERL_SI *curstackinfo;
108 AV *curstack;
109 AV *mainstack;
110 SV **stack_sp;
111 OP *op;
112 SV **curpad;
113 AV *comppad;
114 CV *compcv;
115 SV **stack_base;
116 SV **stack_max;
117 SV **tmps_stack;
118 I32 tmps_floor;
119 I32 tmps_ix;
120 I32 tmps_max;
121 I32 *markstack;
122 I32 *markstack_ptr;
123 I32 *markstack_max;
124 I32 *scopestack;
125 I32 scopestack_ix;
126 I32 scopestack_max;
127 ANY *savestack;
128 I32 savestack_ix;
129 I32 savestack_max;
130 OP **retstack;
131 I32 retstack_ix;
132 I32 retstack_max;
133 PMOP *curpm;
134 COP *curcop;
135 JMPENV *top_env;
136 169
137 /* data associated with this coroutine (initial args) */ 170 /* data associated with this coroutine (initial args) */
138 AV *args; 171 AV *args;
172 int refcnt;
173 int save; /* CORO_SAVE flags */
174 int flags; /* CF_ flags */
175
176 /* optionally saved, might be zero */
177 AV *defav; /* @_ */
178 SV *defsv; /* $_ */
179 SV *errsv; /* $@ */
180 SV *irssv; /* $/ */
181 SV *irssv_sv; /* real $/ cache */
182
183#define VAR(name,type) type name;
184# include "state.h"
185#undef VAR
186
187 /* coro process data */
188 int prio;
139}; 189};
140 190
141typedef struct coro *Coro__State; 191typedef struct coro *Coro__State;
142typedef struct coro *Coro__State_or_hashref; 192typedef struct coro *Coro__State_or_hashref;
143 193
144/* mostly copied from op.c:cv_clone2 */ 194/** Coro ********************************************************************/
145STATIC AV * 195
146clone_padlist (pTHX_ AV *protopadlist) 196#define PRIO_MAX 3
197#define PRIO_HIGH 1
198#define PRIO_NORMAL 0
199#define PRIO_LOW -1
200#define PRIO_IDLE -3
201#define PRIO_MIN -4
202
203/* for Coro.pm */
204static SV *coro_current;
205static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206static int coro_nready;
207
208/** lowlevel stuff **********************************************************/
209
210static AV *
211coro_clone_padlist (CV *cv)
147{ 212{
148 AV *av; 213 AV *padlist = CvPADLIST (cv);
149 I32 ix;
150 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
151 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
152 SV **pname = AvARRAY (protopad_name);
153 SV **ppad = AvARRAY (protopad);
154 I32 fname = AvFILLp (protopad_name);
155 I32 fpad = AvFILLp (protopad);
156 AV *newpadlist, *newpad_name, *newpad; 214 AV *newpadlist, *newpad;
157 SV **npad;
158
159 newpad_name = newAV ();
160 for (ix = fname; ix >= 0; ix--)
161 av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
162
163 newpad = newAV ();
164 av_fill (newpad, AvFILLp (protopad));
165 npad = AvARRAY (newpad);
166 215
167 newpadlist = newAV (); 216 newpadlist = newAV ();
168 AvREAL_off (newpadlist); 217 AvREAL_off (newpadlist);
169 av_store (newpadlist, 0, (SV *) newpad_name); 218#if PERL_VERSION_ATLEAST (5,9,0)
219 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
220#else
221 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
222#endif
223 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
224 --AvFILLp (padlist);
225
226 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
170 av_store (newpadlist, 1, (SV *) newpad); 227 av_store (newpadlist, 1, (SV *)newpad);
171
172 av = newAV (); /* will be @_ */
173 av_extend (av, 0);
174 av_store (newpad, 0, (SV *) av);
175 AvREIFY_on (av);
176
177 for (ix = fpad; ix > 0; ix--)
178 {
179 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
180
181 if (namesv && namesv != &PL_sv_undef)
182 {
183 char *name = SvPVX (namesv); /* XXX */
184
185 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
186 { /* lexical from outside? */
187 npad[ix] = SvREFCNT_inc (ppad[ix]);
188 }
189 else
190 { /* our own lexical */
191 SV *sv;
192 if (*name == '&')
193 sv = SvREFCNT_inc (ppad[ix]);
194 else if (*name == '@')
195 sv = (SV *) newAV ();
196 else if (*name == '%')
197 sv = (SV *) newHV ();
198 else
199 sv = NEWSV (0, 0);
200
201#ifdef SvPADBUSY
202 if (!SvPADBUSY (sv))
203#endif
204 SvPADMY_on (sv);
205
206 npad[ix] = sv;
207 }
208 }
209 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
210 {
211 npad[ix] = SvREFCNT_inc (ppad[ix]);
212 }
213 else
214 {
215 SV *sv = NEWSV (0, 0);
216 SvPADTMP_on (sv);
217 npad[ix] = sv;
218 }
219 }
220
221#if 0 /* return -ENOTUNDERSTOOD */
222 /* Now that vars are all in place, clone nested closures. */
223
224 for (ix = fpad; ix > 0; ix--) {
225 SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
226 if (namesv
227 && namesv != &PL_sv_undef
228 && !(SvFLAGS(namesv) & SVf_FAKE)
229 && *SvPVX(namesv) == '&'
230 && CvCLONE(ppad[ix]))
231 {
232 CV *kid = cv_clone((CV*)ppad[ix]);
233 SvREFCNT_dec(ppad[ix]);
234 CvCLONE_on(kid);
235 SvPADMY_on(kid);
236 npad[ix] = (SV*)kid;
237 }
238 }
239#endif
240 228
241 return newpadlist; 229 return newpadlist;
242} 230}
243 231
244STATIC void 232static void
245free_padlist (pTHX_ AV *padlist) 233free_padlist (AV *padlist)
246{ 234{
247 /* may be during global destruction */ 235 /* may be during global destruction */
248 if (SvREFCNT (padlist)) 236 if (SvREFCNT (padlist))
249 { 237 {
250 I32 i = AvFILLp (padlist); 238 I32 i = AvFILLp (padlist);
… …
263 251
264 SvREFCNT_dec ((SV*)padlist); 252 SvREFCNT_dec ((SV*)padlist);
265 } 253 }
266} 254}
267 255
268STATIC int 256static int
269coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 257coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
270{ 258{
271 AV *padlist; 259 AV *padlist;
272 AV *av = (AV *)mg->mg_obj; 260 AV *av = (AV *)mg->mg_obj;
273 261
274 /* casting is fun. */ 262 /* casting is fun. */
275 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 263 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
276 free_padlist (aTHX_ padlist); 264 free_padlist (padlist);
277 265
278 SvREFCNT_dec (av); 266 SvREFCNT_dec (av);
279 267
280 return 0; 268 return 0;
281} 269}
282 270
283#define PERL_MAGIC_coro PERL_MAGIC_ext 271#define PERL_MAGIC_coro PERL_MAGIC_ext
284 272
285static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 273static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
286 274
275#define CORO_MAGIC(cv) \
276 SvMAGIC (cv) \
277 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278 ? SvMAGIC (cv) \
279 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
280 : 0
281
287/* the next two functions merely cache the padlists */ 282/* the next two functions merely cache the padlists */
288STATIC void 283static void
289get_padlist (pTHX_ CV *cv) 284get_padlist (CV *cv)
290{ 285{
291 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 286 MAGIC *mg = CORO_MAGIC (cv);
287 AV *av;
292 288
293 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 289 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
294 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 290 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 291 else
292 {
293#if PREFER_PERL_FUNCTIONS
294 /* this is probably cleaner, but also slower? */
295 CV *cp = Perl_cv_clone (cv);
296 CvPADLIST (cv) = CvPADLIST (cp);
297 CvPADLIST (cp) = 0;
298 SvREFCNT_dec (cp);
299#else
296 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); 300 CvPADLIST (cv) = coro_clone_padlist (cv);
301#endif
302 }
297} 303}
298 304
299STATIC void 305static void
300put_padlist (pTHX_ CV *cv) 306put_padlist (CV *cv)
301{ 307{
302 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 308 MAGIC *mg = CORO_MAGIC (cv);
309 AV *av;
303 310
304 if (!mg) 311 if (!mg)
305 { 312 {
306 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 313 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
307 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 314 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
308 mg->mg_virtual = &vtbl_coro; 315 mg->mg_virtual = &vtbl_coro;
309 mg->mg_obj = (SV *)newAV (); 316 mg->mg_obj = (SV *)newAV ();
310 } 317 }
311 318
312 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); 319 av = (AV *)mg->mg_obj;
320
321 if (AvFILLp (av) >= AvMAX (av))
322 av_extend (av, AvMAX (av) + 1);
323
324 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
313} 325}
326
327/** load & save, init *******************************************************/
314 328
315#define SB do { 329#define SB do {
316#define SE } while (0) 330#define SE } while (0)
317 331
318#define LOAD(state) load_state(aTHX_ (state));
319#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
320
321#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE 332#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
322 333
323static void 334static void
324load_state(pTHX_ Coro__State c) 335load_perl (Coro__State c)
325{ 336{
326 PL_dowarn = c->dowarn; 337#define VAR(name,type) PL_ ## name = c->name;
327 PL_in_eval = c->in_eval; 338# include "state.h"
328 339#undef VAR
329 PL_curstackinfo = c->curstackinfo;
330 PL_curstack = c->curstack;
331 PL_mainstack = c->mainstack;
332 PL_stack_sp = c->stack_sp;
333 PL_op = c->op;
334 PL_curpad = c->curpad;
335 PL_comppad = c->comppad;
336 PL_compcv = c->compcv;
337 PL_stack_base = c->stack_base;
338 PL_stack_max = c->stack_max;
339 PL_tmps_stack = c->tmps_stack;
340 PL_tmps_floor = c->tmps_floor;
341 PL_tmps_ix = c->tmps_ix;
342 PL_tmps_max = c->tmps_max;
343 PL_markstack = c->markstack;
344 PL_markstack_ptr = c->markstack_ptr;
345 PL_markstack_max = c->markstack_max;
346 PL_scopestack = c->scopestack;
347 PL_scopestack_ix = c->scopestack_ix;
348 PL_scopestack_max = c->scopestack_max;
349 PL_savestack = c->savestack;
350 PL_savestack_ix = c->savestack_ix;
351 PL_savestack_max = c->savestack_max;
352#if PERL_VERSION < 9
353 PL_retstack = c->retstack;
354 PL_retstack_ix = c->retstack_ix;
355 PL_retstack_max = c->retstack_max;
356#endif
357 PL_curpm = c->curpm;
358 PL_curcop = c->curcop;
359 PL_top_env = c->top_env;
360 340
361 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 341 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
362 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 342 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
363 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 343 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
344 if (c->irssv)
345 {
346 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347 SvREFCNT_dec (c->irssv);
348 else
349 {
350 REPLACE_SV (PL_rs, c->irssv);
351 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352 sv_setsv (c->irssv_sv, PL_rs);
353 }
354 }
364 355
365 { 356 {
366 dSP; 357 dSP;
367 CV *cv; 358 CV *cv;
368 359
369 /* now do the ugly restore mess */ 360 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 361 while ((cv = (CV *)POPs))
371 { 362 {
372 AV *padlist = (AV *)POPs;
373
374 if (padlist)
375 {
376 put_padlist (aTHX_ cv); /* mark this padlist as available */ 363 put_padlist (cv); /* mark this padlist as available */
377 CvPADLIST(cv) = padlist; 364 CvDEPTH (cv) = PTR2IV (POPs);
378 } 365 CvPADLIST (cv) = (AV *)POPs;
379
380 ++CvDEPTH(cv);
381 } 366 }
382 367
383 PUTBACK; 368 PUTBACK;
384 } 369 }
370 assert (!PL_comppad || AvARRAY (PL_comppad));//D
385} 371}
386 372
387static void 373static void
388save_state(pTHX_ Coro__State c, int flags) 374save_perl (Coro__State c)
389{ 375{
376 assert (!PL_comppad || AvARRAY (PL_comppad));//D
390 { 377 {
391 dSP; 378 dSP;
392 I32 cxix = cxstack_ix; 379 I32 cxix = cxstack_ix;
393 PERL_CONTEXT *ccstk = cxstack; 380 PERL_CONTEXT *ccstk = cxstack;
394 PERL_SI *top_si = PL_curstackinfo; 381 PERL_SI *top_si = PL_curstackinfo;
… …
396 /* 383 /*
397 * the worst thing you can imagine happens first - we have to save 384 * the worst thing you can imagine happens first - we have to save
398 * (and reinitialize) all cv's in the whole callchain :( 385 * (and reinitialize) all cv's in the whole callchain :(
399 */ 386 */
400 387
388 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 389 PUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 390 /* this loop was inspired by pp_caller */
403 for (;;) 391 for (;;)
404 { 392 {
405 while (cxix >= 0) 393 while (cxix >= 0)
406 { 394 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 395 PERL_CONTEXT *cx = &ccstk[cxix--];
408 396
409 if (CxTYPE(cx) == CXt_SUB) 397 if (CxTYPE (cx) == CXt_SUB)
410 { 398 {
411 CV *cv = cx->blk_sub.cv; 399 CV *cv = cx->blk_sub.cv;
400
412 if (CvDEPTH(cv)) 401 if (CvDEPTH (cv))
413 { 402 {
414 EXTEND (SP, CvDEPTH(cv)*2); 403 EXTEND (SP, 3);
415
416 while (--CvDEPTH(cv))
417 {
418 /* this tells the restore code to increment CvDEPTH */
419 PUSHs (Nullsv);
420 PUSHs ((SV *)cv);
421 }
422
423 PUSHs ((SV *)CvPADLIST(cv)); 404 PUSHs ((SV *)CvPADLIST (cv));
405 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
424 PUSHs ((SV *)cv); 406 PUSHs ((SV *)cv);
425 407
426 get_padlist (aTHX_ cv); /* this is a monster */ 408 CvDEPTH (cv) = 0;
409 get_padlist (cv);
427 } 410 }
428 } 411 }
429#ifdef CXt_FORMAT
430 else if (CxTYPE(cx) == CXt_FORMAT)
431 {
432 /* I never used formats, so how should I know how these are implemented? */
433 /* my bold guess is as a simple, plain sub... */
434 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
435 }
436#endif
437 } 412 }
438 413
439 if (top_si->si_type == PERLSI_MAIN) 414 if (top_si->si_type == PERLSI_MAIN)
440 break; 415 break;
441 416
… …
445 } 420 }
446 421
447 PUTBACK; 422 PUTBACK;
448 } 423 }
449 424
450 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 425 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
451 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 426 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
452 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 427 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
428 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
453 429
454 c->dowarn = PL_dowarn; 430#define VAR(name,type)c->name = PL_ ## name;
455 c->in_eval = PL_in_eval; 431# include "state.h"
456 432#undef VAR
457 c->curstackinfo = PL_curstackinfo;
458 c->curstack = PL_curstack;
459 c->mainstack = PL_mainstack;
460 c->stack_sp = PL_stack_sp;
461 c->op = PL_op;
462 c->curpad = PL_curpad;
463 c->comppad = PL_comppad;
464 c->compcv = PL_compcv;
465 c->stack_base = PL_stack_base;
466 c->stack_max = PL_stack_max;
467 c->tmps_stack = PL_tmps_stack;
468 c->tmps_floor = PL_tmps_floor;
469 c->tmps_ix = PL_tmps_ix;
470 c->tmps_max = PL_tmps_max;
471 c->markstack = PL_markstack;
472 c->markstack_ptr = PL_markstack_ptr;
473 c->markstack_max = PL_markstack_max;
474 c->scopestack = PL_scopestack;
475 c->scopestack_ix = PL_scopestack_ix;
476 c->scopestack_max = PL_scopestack_max;
477 c->savestack = PL_savestack;
478 c->savestack_ix = PL_savestack_ix;
479 c->savestack_max = PL_savestack_max;
480#if PERL_VERSION < 9
481 c->retstack = PL_retstack;
482 c->retstack_ix = PL_retstack_ix;
483 c->retstack_max = PL_retstack_max;
484#endif
485 c->curpm = PL_curpm;
486 c->curcop = PL_curcop;
487 c->top_env = PL_top_env;
488} 433}
489 434
490/* 435/*
491 * allocate various perl stacks. This is an exact copy 436 * allocate various perl stacks. This is an exact copy
492 * of perl.c:init_stacks, except that it uses less memory 437 * of perl.c:init_stacks, except that it uses less memory
493 * on the (sometimes correct) assumption that coroutines do 438 * on the (sometimes correct) assumption that coroutines do
494 * not usually need a lot of stackspace. 439 * not usually need a lot of stackspace.
495 */ 440 */
496STATIC void 441#if PREFER_PERL_FUNCTIONS
442# define coro_init_stacks init_stacks
443#else
444static void
497coro_init_stacks (pTHX) 445coro_init_stacks ()
498{ 446{
499 LOCK;
500
501 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 447 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
502 PL_curstackinfo->si_type = PERLSI_MAIN; 448 PL_curstackinfo->si_type = PERLSI_MAIN;
503 PL_curstack = PL_curstackinfo->si_stack; 449 PL_curstack = PL_curstackinfo->si_stack;
504 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 450 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505 451
506 PL_stack_base = AvARRAY(PL_curstack); 452 PL_stack_base = AvARRAY(PL_curstack);
507 PL_stack_sp = PL_stack_base; 453 PL_stack_sp = PL_stack_base;
508 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 454 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509 455
510 New(50,PL_tmps_stack,96,SV*); 456 New(50,PL_tmps_stack,128,SV*);
511 PL_tmps_floor = -1; 457 PL_tmps_floor = -1;
512 PL_tmps_ix = -1; 458 PL_tmps_ix = -1;
513 PL_tmps_max = 96; 459 PL_tmps_max = 128;
514 460
515 New(54,PL_markstack,16,I32); 461 New(54,PL_markstack,32,I32);
516 PL_markstack_ptr = PL_markstack; 462 PL_markstack_ptr = PL_markstack;
517 PL_markstack_max = PL_markstack + 16; 463 PL_markstack_max = PL_markstack + 32;
518 464
519#ifdef SET_MARK_OFFSET 465#ifdef SET_MARK_OFFSET
520 SET_MARK_OFFSET; 466 SET_MARK_OFFSET;
521#endif 467#endif
522 468
523 New(54,PL_scopestack,16,I32); 469 New(54,PL_scopestack,32,I32);
524 PL_scopestack_ix = 0; 470 PL_scopestack_ix = 0;
525 PL_scopestack_max = 16; 471 PL_scopestack_max = 32;
526 472
527 New(54,PL_savestack,96,ANY); 473 New(54,PL_savestack,64,ANY);
528 PL_savestack_ix = 0; 474 PL_savestack_ix = 0;
529 PL_savestack_max = 96; 475 PL_savestack_max = 64;
530 476
531#if PERL_VERSION < 9 477#if !PERL_VERSION_ATLEAST (5,9,0)
532 New(54,PL_retstack,8,OP*); 478 New(54,PL_retstack,16,OP*);
533 PL_retstack_ix = 0; 479 PL_retstack_ix = 0;
534 PL_retstack_max = 8; 480 PL_retstack_max = 16;
535#endif 481#endif
536
537 UNLOCK;
538} 482}
483#endif
539 484
540/* 485/*
541 * destroy the stacks, the callchain etc... 486 * destroy the stacks, the callchain etc...
542 */ 487 */
543STATIC void 488static void
544destroy_stacks(pTHX) 489coro_destroy_stacks ()
545{ 490{
546 if (!IN_DESTRUCT) 491 if (!IN_DESTRUCT)
547 { 492 {
548 /* is this ugly, I ask? */ 493 /* restore all saved variables and stuff */
549 LEAVE_SCOPE (0); 494 LEAVE_SCOPE (0);
495 assert (PL_tmps_floor == -1);
550 496
551 /* sure it is, but more important: is it correct?? :/ */ 497 /* free all temporaries */
552 FREETMPS; 498 FREETMPS;
499 assert (PL_tmps_ix == -1);
553 500
501 /* unwind all extra stacks */
554 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ 502 POPSTACK_TO (PL_mainstack);
503
504 /* unwind main stack */
505 dounwind (-1);
555 } 506 }
556 507
557 while (PL_curstackinfo->si_next) 508 while (PL_curstackinfo->si_next)
558 PL_curstackinfo = PL_curstackinfo->si_next; 509 PL_curstackinfo = PL_curstackinfo->si_next;
559 510
560 while (PL_curstackinfo) 511 while (PL_curstackinfo)
561 { 512 {
562 PERL_SI *p = PL_curstackinfo->si_prev; 513 PERL_SI *p = PL_curstackinfo->si_prev;
563 514
564 { /*D*//*remove*/
565 dSP;
566 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
567 PUTBACK; /* possibly superfluous */
568 }
569
570 if (!IN_DESTRUCT) 515 if (!IN_DESTRUCT)
571 {
572 dounwind (-1);/*D*//*remove*/
573 SvREFCNT_dec (PL_curstackinfo->si_stack); 516 SvREFCNT_dec (PL_curstackinfo->si_stack);
574 }
575 517
576 Safefree (PL_curstackinfo->si_cxstack); 518 Safefree (PL_curstackinfo->si_cxstack);
577 Safefree (PL_curstackinfo); 519 Safefree (PL_curstackinfo);
578 PL_curstackinfo = p; 520 PL_curstackinfo = p;
579 } 521 }
580 522
581 Safefree (PL_tmps_stack); 523 Safefree (PL_tmps_stack);
582 Safefree (PL_markstack); 524 Safefree (PL_markstack);
583 Safefree (PL_scopestack); 525 Safefree (PL_scopestack);
584 Safefree (PL_savestack); 526 Safefree (PL_savestack);
585#if PERL_VERSION < 9 527#if !PERL_VERSION_ATLEAST (5,9,0)
586 Safefree (PL_retstack); 528 Safefree (PL_retstack);
587#endif 529#endif
588} 530}
589 531
590static void 532/** coroutine stack handling ************************************************/
591allocate_stack (Coro__State ctx, int alloc)
592{
593 coro_stack *stack;
594 533
595 New (0, stack, 1, coro_stack);
596
597 stack->refcnt = 1;
598 stack->usecnt = 1;
599 stack->gencnt = ctx->gencnt = 0;
600
601 if (alloc)
602 {
603#if HAVE_MMAP
604 stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
605 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
606 if (stack->sptr == (void *)-1)
607#endif
608 {
609 stack->ssize = - (STACKSIZE * (long)sizeof (long));
610 New (0, stack->sptr, STACKSIZE, long);
611 }
612 }
613 else
614 stack->sptr = 0;
615
616 ctx->stack = stack;
617}
618
619static void 534static void
620deallocate_stack (Coro__State ctx) 535setup_coro (struct coro *coro)
621{
622 coro_stack *stack = ctx->stack;
623
624 ctx->stack = 0;
625
626 if (stack)
627 {
628 if (!--stack->refcnt)
629 {
630#ifdef HAVE_MMAP
631 if (stack->ssize > 0 && stack->sptr)
632 munmap (stack->sptr, stack->ssize);
633 else
634#endif
635 Safefree (stack->sptr);
636
637 Safefree (stack);
638 }
639 else if (ctx->gencnt == stack->gencnt)
640 --stack->usecnt;
641 }
642}
643
644static void
645setup_coro (void *arg)
646{ 536{
647 /* 537 /*
648 * emulate part of the perl startup here. 538 * emulate part of the perl startup here.
649 */ 539 */
650 dTHX; 540
541 coro_init_stacks ();
542
543 PL_curcop = &PL_compiling;
544 PL_in_eval = EVAL_NULL;
545 PL_comppad = 0;
546 PL_curpm = 0;
547 PL_localizing = 0;
548 PL_dirty = 0;
549 PL_restartop = 0;
550
551 {
552 dSP;
553 LOGOP myop;
554
555 SvREFCNT_dec (GvAV (PL_defgv));
556 GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558 Zero (&myop, 1, LOGOP);
559 myop.op_next = Nullop;
560 myop.op_flags = OPf_WANT_VOID;
561
562 PUSHMARK (SP);
563 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
564 PUTBACK;
565 PL_op = (OP *)&myop;
566 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567 SPAGAIN;
568 }
569
570 ENTER; /* necessary e.g. for dounwind */
571}
572
573static void
574free_coro_mortal ()
575{
576 if (coro_mortal)
577 {
578 SvREFCNT_dec (coro_mortal);
579 coro_mortal = 0;
580 }
581}
582
583/* inject a fake call to Coro::State::_cctx_init into the execution */
584static void NOINLINE
585prepare_cctx (coro_cctx *cctx)
586{
651 dSP; 587 dSP;
652 Coro__State ctx = (Coro__State)arg; 588 LOGOP myop;
653 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
654 589
655 coro_init_stacks (aTHX); 590 Zero (&myop, 1, LOGOP);
656 /*PL_curcop = 0;*/ 591 myop.op_next = PL_op;
657 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 592 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
658 SvREFCNT_dec (GvAV (PL_defgv));
659 GvAV (PL_defgv) = ctx->args; ctx->args = 0;
660 593
594 PUSHMARK (SP);
595 EXTEND (SP, 2);
596 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
597 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
598 PUTBACK;
599 PL_op = (OP *)&myop;
600 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
661 SPAGAIN; 601 SPAGAIN;
662
663 if (ctx->stack)
664 {
665 ctx->cursp = 0;
666
667 PUSHMARK(SP);
668 PUTBACK;
669 (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL);
670
671 if (SvTRUE (ERRSV))
672 croak (NULL);
673 else
674 croak ("FATAL: CCTXT coroutine returned!");
675 }
676 else
677 {
678 UNOP myop;
679
680 PL_op = (OP *)&myop;
681
682 Zero(&myop, 1, UNOP);
683 myop.op_next = Nullop;
684 myop.op_flags = OPf_WANT_VOID;
685
686 PUSHMARK(SP);
687 XPUSHs (sub_init);
688 /*
689 * the next line is slightly wrong, as PL_op->op_next
690 * is actually being executed so we skip the first op.
691 * that doesn't matter, though, since it is only
692 * pp_nextstate and we never return...
693 * ah yes, and I don't care anyways ;)
694 */
695 PUTBACK;
696 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
697 SPAGAIN;
698
699 ENTER; /* necessary e.g. for dounwind */
700 }
701} 602}
702 603
703static void 604static void
704continue_coro (void *arg) 605coro_run (void *arg)
705{ 606{
607 /* coro_run is the alternative tail of transfer(), so unlock here. */
608 UNLOCK;
609
706 /* 610 /*
707 * this is a _very_ stripped down perl interpreter ;) 611 * this is a _very_ stripped down perl interpreter ;)
708 */ 612 */
709 dTHX;
710 Coro__State ctx = (Coro__State)arg;
711
712 PL_top_env = &ctx->start_env; 613 PL_top_env = &PL_start_env;
713 614
714 ctx->cursp = 0; 615 /* inject call to cctx_init */
715 PL_op = PL_op->op_next; 616 prepare_cctx ((coro_cctx *)arg);
716 CALLRUNOPS(aTHX);
717 617
618 /* somebody will hit me for both perl_run and PL_restartop */
619 PL_restartop = PL_op;
620 perl_run (PL_curinterp);
621
622 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
718 abort (); 623 abort ();
719} 624}
720 625
721STATIC void 626static coro_cctx *
627cctx_new ()
628{
629 coro_cctx *cctx;
630
631 ++cctx_count;
632
633 Newz (0, cctx, 1, coro_cctx);
634
635#if HAVE_MMAP
636
637 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
638 /* mmap supposedly does allocate-on-write for us */
639 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640
641 if (cctx->sptr != (void *)-1)
642 {
643# if STACKGUARD
644 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
645# endif
646 REGISTER_STACK (
647 cctx,
648 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
649 cctx->ssize + (char *)cctx->sptr
650 );
651
652 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653 }
654 else
655#endif
656 {
657 cctx->ssize = -STACKSIZE * (long)sizeof (long);
658 New (0, cctx->sptr, STACKSIZE, long);
659
660 if (!cctx->sptr)
661 {
662 perror ("FATAL: unable to allocate stack for coroutine");
663 _exit (EXIT_FAILURE);
664 }
665
666 REGISTER_STACK (
667 cctx,
668 (char *)cctx->sptr,
669 (char *)cctx->sptr - cctx->ssize
670 );
671
672 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
673 }
674
675 return cctx;
676}
677
678static void
679cctx_destroy (coro_cctx *cctx)
680{
681 if (!cctx)
682 return;
683
684 --cctx_count;
685
686#if USE_VALGRIND
687 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688#endif
689
690#if HAVE_MMAP
691 if (cctx->ssize > 0)
692 munmap (cctx->sptr, cctx->ssize);
693 else
694#endif
695 Safefree (cctx->sptr);
696
697 Safefree (cctx);
698}
699
700static coro_cctx *
701cctx_get ()
702{
703 coro_cctx *cctx;
704
705 if (cctx_first)
706 {
707 cctx = cctx_first;
708 cctx_first = cctx->next;
709 --cctx_idle;
710 }
711 else
712 {
713 cctx = cctx_new ();
714 PL_op = PL_op->op_next;
715 }
716
717 return cctx;
718}
719
720static void
721cctx_put (coro_cctx *cctx)
722{
723 /* free another cctx if overlimit */
724 if (cctx_idle >= MAX_IDLE_CCTX)
725 {
726 coro_cctx *first = cctx_first;
727 cctx_first = first->next;
728 --cctx_idle;
729
730 assert (!first->inuse);
731 cctx_destroy (first);
732 }
733
734 ++cctx_idle;
735 cctx->next = cctx_first;
736 cctx_first = cctx;
737}
738
739/** coroutine switching *****************************************************/
740
741/* never call directly, always through the coro_state_transfer global variable */
742static void NOINLINE
722transfer (pTHX_ struct coro *prev, struct coro *next, int flags) 743transfer (struct coro *prev, struct coro *next)
723{ 744{
724 dSTACKLEVEL; 745 dSTACKLEVEL;
725 746
747 /* sometimes transfer is only called to set idle_sp */
748 if (!next)
749 {
750 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
751 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
752 }
726 if (prev != next) 753 else if (prev != next)
727 { 754 {
728 if (next->mainstack) 755 coro_cctx *prev__cctx;
756
757 if (prev->flags & CF_NEW)
729 { 758 {
730 LOCK; 759 /* create a new empty context */
731 SAVE (prev, flags); 760 Newz (0, prev->cctx, 1, coro_cctx);
732 LOAD (next); 761 prev->cctx->inuse = 1;
733 UNLOCK; 762 prev->flags &= ~CF_NEW;
734 763 prev->flags |= CF_RUNNING;
735 /* mark this state as in-use */
736 next->mainstack = 0;
737 next->tmps_ix = -2;
738
739 /* stacklevel changed? if yes, grab the stack for us! */
740 if (flags & TRANSFER_SAVE_CCTXT)
741 {
742 if (!prev->stack)
743 allocate_stack (prev, 0);
744 else if (prev->cursp != stacklevel
745 && prev->stack->usecnt > 1)
746 {
747 prev->gencnt = ++prev->stack->gencnt;
748 prev->stack->usecnt = 1;
749 }
750
751 /* has our stack been invalidated? */
752 if (next->stack && next->stack->gencnt != next->gencnt)
753 {
754 deallocate_stack (next);
755 allocate_stack (next, 1);
756 coro_create (&(next->stack->cctx),
757 continue_coro, (void *)next,
758 next->stack->sptr, labs (next->stack->ssize));
759 }
760
761 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
762 prev->cursp = stacklevel;
763 /* don't add any code here */
764 }
765 else
766 next->cursp = stacklevel;
767 } 764 }
768 else if (next->tmps_ix == -2) 765
769 croak ("tried to transfer to running coroutine"); 766 /*TODO: must not croak here */
767 if (!prev->flags & CF_RUNNING)
768 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
769
770 if (next->flags & CF_RUNNING)
771 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
772
773 if (next->flags & CF_DESTROYED)
774 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
775
776 prev->flags &= ~CF_RUNNING;
777 next->flags |= CF_RUNNING;
778
779 LOCK;
780
781 if (next->flags & CF_NEW)
782 {
783 /* need to start coroutine */
784 next->flags &= ~CF_NEW;
785 /* first get rid of the old state */
786 save_perl (prev);
787 /* setup coroutine call */
788 setup_coro (next);
789 /* need a new stack */
790 assert (!next->cctx);
791 }
770 else 792 else
771 { 793 {
772 LOCK; 794 /* coroutine already started */
773 SAVE (prev, -1); /* first get rid of the old state */ 795 save_perl (prev);
774 UNLOCK; 796 load_perl (next);
775
776 if (flags & TRANSFER_SAVE_CCTXT)
777 {
778 if (!prev->stack)
779 allocate_stack (prev, 0);
780
781 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
782 {
783 PL_top_env = &next->start_env;
784
785 setup_coro (next);
786 next->cursp = stacklevel;
787
788 prev->stack->refcnt++;
789 prev->stack->usecnt++;
790 next->stack = prev->stack;
791 next->gencnt = prev->gencnt;
792 }
793 else
794 {
795 assert (!next->stack);
796 allocate_stack (next, 1);
797 coro_create (&(next->stack->cctx),
798 setup_coro, (void *)next,
799 next->stack->sptr, labs (next->stack->ssize));
800 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
801 prev->cursp = stacklevel;
802 /* don't add any code here */
803 }
804 }
805 else
806 {
807 setup_coro (next);
808 next->cursp = stacklevel;
809 }
810 } 797 }
811 }
812 798
813 LOCK; 799 prev__cctx = prev->cctx;
814 if (coro_mortal) 800
815 { 801 /* possibly "free" the cctx */
816 SvREFCNT_dec (coro_mortal); 802 if (prev__cctx->idle_sp == STACKLEVEL)
803 {
804 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
805 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806
807 prev->cctx = 0;
808
809 cctx_put (prev__cctx);
810 prev__cctx->inuse = 0;
811 }
812
813 if (!next->cctx)
814 {
815 next->cctx = cctx_get ();
816 assert (!next->cctx->inuse);
817 next->cctx->inuse = 1;
818 }
819
820 if (prev__cctx != next->cctx)
821 {
822 prev__cctx->top_env = PL_top_env;
823 PL_top_env = next->cctx->top_env;
824 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825 }
826
817 coro_mortal = 0; 827 free_coro_mortal ();
818 }
819 UNLOCK; 828 UNLOCK;
829 }
820} 830}
821 831
822#define SV_CORO(sv,func) \ 832struct transfer_args
823 do { \ 833{
824 if (SvROK (sv)) \ 834 struct coro *prev, *next;
825 sv = SvRV (sv); \ 835};
826 \
827 if (SvTYPE (sv) == SVt_PVHV) \
828 { \
829 HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
830 \
831 if (!he) \
832 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
833 \
834 (sv) = SvRV (HeVAL(he)); \
835 } \
836 \
837 /* must also be changed inside Coro::Cont::yield */ \
838 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
839 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
840 \
841 } while(0)
842 836
843#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv)) 837#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
844 838
839/** high level stuff ********************************************************/
840
845static void 841static int
842coro_state_destroy (struct coro *coro)
843{
844 if (coro->flags & CF_DESTROYED)
845 return 0;
846
847 coro->flags |= CF_DESTROYED;
848
849 if (coro->flags & CF_READY)
850 {
851 /* reduce nready, as destroying a ready coro effectively unreadies it */
852 /* alternative: look through all ready queues and remove the coro */
853 LOCK;
854 --coro_nready;
855 UNLOCK;
856 }
857 else
858 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
859
860 if (coro->mainstack && coro->mainstack != main_mainstack)
861 {
862 struct coro temp;
863
864 assert (!(coro->flags & CF_RUNNING));
865
866 Zero (&temp, 1, struct coro);
867 temp.save = CORO_SAVE_ALL;
868
869 if (coro->flags & CF_RUNNING)
870 croak ("FATAL: tried to destroy currently running coroutine");
871
872 save_perl (&temp);
873 load_perl (coro);
874
875 coro_destroy_stacks ();
876
877 load_perl (&temp); /* this will get rid of defsv etc.. */
878
879 coro->mainstack = 0;
880 }
881
882 cctx_destroy (coro->cctx);
883 SvREFCNT_dec (coro->args);
884
885 return 1;
886}
887
888static int
889coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890{
891 struct coro *coro = (struct coro *)mg->mg_ptr;
892 mg->mg_ptr = 0;
893
894 if (--coro->refcnt < 0)
895 {
896 coro_state_destroy (coro);
897 Safefree (coro);
898 }
899
900 return 0;
901}
902
903static int
904coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
905{
906 struct coro *coro = (struct coro *)mg->mg_ptr;
907
908 ++coro->refcnt;
909
910 return 0;
911}
912
913static MGVTBL coro_state_vtbl = {
914 0, 0, 0, 0,
915 coro_state_free,
916 0,
917#ifdef MGf_DUP
918 coro_state_dup,
919#else
920# define MGf_DUP 0
921#endif
922};
923
924static struct coro *
925SvSTATE (SV *coro)
926{
927 HV *stash;
928 MAGIC *mg;
929
930 if (SvROK (coro))
931 coro = SvRV (coro);
932
933 stash = SvSTASH (coro);
934 if (stash != coro_stash && stash != coro_state_stash)
935 {
936 /* very slow, but rare, check */
937 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938 croak ("Coro::State object required");
939 }
940
941 mg = SvMAGIC (coro);
942 assert (mg->mg_type == PERL_MAGIC_ext);
943 return (struct coro *)mg->mg_ptr;
944}
945
946static void
947prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)
948{
949 ta->prev = SvSTATE (prev_sv);
950 ta->next = SvSTATE (next_sv);
951}
952
953static void
846api_transfer(pTHX_ SV *prev, SV *next, int flags) 954api_transfer (SV *prev_sv, SV *next_sv)
847{ 955{
848 SV_CORO (prev, "Coro::transfer"); 956 struct transfer_args ta;
849 SV_CORO (next, "Coro::transfer");
850 957
851 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); 958 prepare_transfer (&ta, prev_sv, next_sv);
959 TRANSFER (ta);
960}
961
962static int
963api_save (SV *coro_sv, int new_save)
964{
965 struct coro *coro = SvSTATE (coro_sv);
966 int old_save = coro->save;
967
968 if (new_save >= 0)
969 coro->save = new_save;
970
971 return old_save;
852} 972}
853 973
854/** Coro ********************************************************************/ 974/** Coro ********************************************************************/
855 975
856#define PRIO_MAX 3
857#define PRIO_HIGH 1
858#define PRIO_NORMAL 0
859#define PRIO_LOW -1
860#define PRIO_IDLE -3
861#define PRIO_MIN -4
862
863/* for Coro.pm */
864static GV *coro_current, *coro_idle;
865static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
866static int coro_nready;
867
868static void 976static void
869coro_enq (pTHX_ SV *sv) 977coro_enq (SV *coro_sv)
870{ 978{
871 SV **xprio;
872 int prio;
873
874 if (SvTYPE (sv) != SVt_PVHV)
875 croak ("Coro::ready tried to enqueue something that is not a coroutine");
876
877 xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
878 prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
879
880 prio = prio > PRIO_MAX ? PRIO_MAX
881 : prio < PRIO_MIN ? PRIO_MIN
882 : prio;
883
884 av_push (coro_ready [prio - PRIO_MIN], sv); 979 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
885 coro_nready++;
886} 980}
887 981
888static SV * 982static SV *
889coro_deq (pTHX_ int min_prio) 983coro_deq (int min_prio)
890{ 984{
891 int prio = PRIO_MAX - PRIO_MIN; 985 int prio = PRIO_MAX - PRIO_MIN;
892 986
893 min_prio -= PRIO_MIN; 987 min_prio -= PRIO_MIN;
894 if (min_prio < 0) 988 if (min_prio < 0)
895 min_prio = 0; 989 min_prio = 0;
896 990
897 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 991 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
898 if (av_len (coro_ready[prio]) >= 0) 992 if (AvFILLp (coro_ready [prio]) >= 0)
899 {
900 coro_nready--;
901 return av_shift (coro_ready[prio]); 993 return av_shift (coro_ready [prio]);
902 }
903 994
904 return 0; 995 return 0;
905} 996}
906 997
907static void 998static int
908api_ready (SV *coro) 999api_ready (SV *coro_sv)
909{ 1000{
910 dTHX; 1001 struct coro *coro;
911 1002
912 if (SvROK (coro)) 1003 if (SvROK (coro_sv))
913 coro = SvRV (coro); 1004 coro_sv = SvRV (coro_sv);
1005
1006 coro = SvSTATE (coro_sv);
1007
1008 if (coro->flags & CF_READY)
1009 return 0;
1010
1011 coro->flags |= CF_READY;
914 1012
915 LOCK; 1013 LOCK;
916 coro_enq (aTHX_ SvREFCNT_inc (coro)); 1014 coro_enq (SvREFCNT_inc (coro_sv));
1015 ++coro_nready;
917 UNLOCK; 1016 UNLOCK;
1017
1018 return 1;
1019}
1020
1021static int
1022api_is_ready (SV *coro_sv)
1023{
1024 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1025}
1026
1027static void
1028prepare_schedule (struct transfer_args *ta)
1029{
1030 SV *prev_sv, *next_sv;
1031
1032 for (;;)
1033 {
1034 LOCK;
1035 next_sv = coro_deq (PRIO_MIN);
1036
1037 /* nothing to schedule: call the idle handler */
1038 if (!next_sv)
1039 {
1040 dSP;
1041 UNLOCK;
1042
1043 ENTER;
1044 SAVETMPS;
1045
1046 PUSHMARK (SP);
1047 PUTBACK;
1048 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1049
1050 FREETMPS;
1051 LEAVE;
1052 continue;
1053 }
1054
1055 ta->next = SvSTATE (next_sv);
1056
1057 /* cannot transfer to destroyed coros, skip and look for next */
1058 if (ta->next->flags & CF_DESTROYED)
1059 {
1060 UNLOCK;
1061 SvREFCNT_dec (next_sv);
1062 /* coro_nready is already taken care of by destroy */
1063 continue;
1064 }
1065
1066 --coro_nready;
1067 UNLOCK;
1068 break;
1069 }
1070
1071 /* free this only after the transfer */
1072 prev_sv = SvRV (coro_current);
1073 SvRV_set (coro_current, next_sv);
1074 ta->prev = SvSTATE (prev_sv);
1075
1076 assert (ta->next->flags & CF_READY);
1077 ta->next->flags &= ~CF_READY;
1078
1079 LOCK;
1080 free_coro_mortal ();
1081 coro_mortal = prev_sv;
1082 UNLOCK;
1083}
1084
1085static void
1086prepare_cede (struct transfer_args *ta)
1087{
1088 api_ready (coro_current);
1089 prepare_schedule (ta);
1090}
1091
1092static int
1093prepare_cede_notself (struct transfer_args *ta)
1094{
1095 if (coro_nready)
1096 {
1097 SV *prev = SvRV (coro_current);
1098 prepare_schedule (ta);
1099 api_ready (prev);
1100 return 1;
1101 }
1102 else
1103 return 0;
918} 1104}
919 1105
920static void 1106static void
921api_schedule (void) 1107api_schedule (void)
922{ 1108{
923 dTHX; 1109 struct transfer_args ta;
924 1110
925 SV *prev, *next; 1111 prepare_schedule (&ta);
926 1112 TRANSFER (ta);
927 LOCK;
928
929 prev = SvRV (GvSV (coro_current));
930 next = coro_deq (aTHX_ PRIO_MIN);
931
932 if (!next)
933 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
934
935 /* free this only after the transfer */
936 coro_mortal = prev;
937 SV_CORO (prev, "Coro::schedule");
938
939 SvRV (GvSV (coro_current)) = next;
940
941 SV_CORO (next, "Coro::schedule");
942
943 UNLOCK;
944
945 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
946 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
947} 1113}
948 1114
949static void 1115static int
950api_cede (void) 1116api_cede (void)
951{ 1117{
952 dTHX; 1118 struct transfer_args ta;
953 1119
954 LOCK; 1120 prepare_cede (&ta);
955 coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956 UNLOCK;
957 1121
958 api_schedule (); 1122 if (ta.prev != ta.next)
1123 {
1124 TRANSFER (ta);
1125 return 1;
1126 }
1127 else
1128 return 0;
1129}
1130
1131static int
1132api_cede_notself (void)
1133{
1134 struct transfer_args ta;
1135
1136 if (prepare_cede_notself (&ta))
1137 {
1138 TRANSFER (ta);
1139 return 1;
1140 }
1141 else
1142 return 0;
959} 1143}
960 1144
961MODULE = Coro::State PACKAGE = Coro::State 1145MODULE = Coro::State PACKAGE = Coro::State
962 1146
963PROTOTYPES: ENABLE 1147PROTOTYPES: DISABLE
964 1148
965BOOT: 1149BOOT:
966{ /* {} necessary for stoopid perl-5.6.x */ 1150{
967#ifdef USE_ITHREADS 1151#ifdef USE_ITHREADS
968 MUTEX_INIT (&coro_mutex); 1152 MUTEX_INIT (&coro_mutex);
969#endif 1153#endif
1154 BOOT_PAGESIZE;
970 1155
971 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
972 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
973 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1156 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
974 1157
975 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1158 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
976 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1159 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
977 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1160 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1161 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
978 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 1162 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
979 1163
980 main_mainstack = PL_mainstack; 1164 main_mainstack = PL_mainstack;
981 1165
982 coroapi.ver = CORO_API_VERSION; 1166 coroapi.ver = CORO_API_VERSION;
983 coroapi.transfer = api_transfer; 1167 coroapi.transfer = api_transfer;
984}
985 1168
986Coro::State 1169 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
987_newprocess(args) 1170}
988 SV * args 1171
989 PROTOTYPE: $ 1172SV *
1173new (char *klass, ...)
990 CODE: 1174 CODE:
991 Coro__State coro; 1175{
1176 struct coro *coro;
1177 HV *hv;
1178 int i;
992 1179
993 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
994 croak ("Coro::State::_newprocess expects an arrayref");
995
996 Newz (0, coro, 1, struct coro); 1180 Newz (0, coro, 1, struct coro);
1181 coro->args = newAV ();
1182 coro->save = CORO_SAVE_ALL;
1183 coro->flags = CF_NEW;
997 1184
998 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 1185 hv = newHV ();
999 /*coro->mainstack = 0; *//*actual work is done inside transfer */ 1186 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1000 /*coro->stack = 0;*/ 1187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1001 1188
1002 /* same as JMPENV_BOOTSTRAP */ 1189 for (i = 1; i < items; i++)
1003 /* we might be able to recycle start_env, but safe is safe */ 1190 av_push (coro->args, newSVsv (ST (i)));
1004 /*Zero(&coro->start_env, 1, JMPENV);*/ 1191}
1005 coro->start_env.je_ret = -1;
1006 coro->start_env.je_mustcatch = TRUE;
1007
1008 RETVAL = coro;
1009 OUTPUT: 1192 OUTPUT:
1010 RETVAL 1193 RETVAL
1011 1194
1195int
1196save (SV *coro, int new_save = -1)
1197 CODE:
1198 RETVAL = api_save (coro, new_save);
1199 OUTPUT:
1200 RETVAL
1201
1012void 1202void
1013transfer(prev, next, flags) 1203_set_stacklevel (...)
1014 SV *prev 1204 ALIAS:
1015 SV *next 1205 Coro::State::transfer = 1
1016 int flags 1206 Coro::schedule = 2
1017 PROTOTYPE: @ 1207 Coro::cede = 3
1208 Coro::cede_notself = 4
1018 CODE: 1209 CODE:
1019 PUTBACK; 1210{
1020 SV_CORO (next, "Coro::transfer"); 1211 struct transfer_args ta;
1021 SV_CORO (prev, "Coro::transfer"); 1212
1022 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); 1213 switch (ix)
1023 SPAGAIN; 1214 {
1215 case 0:
1216 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1217 ta.next = 0;
1218 break;
1219
1220 case 1:
1221 if (items != 2)
1222 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1223
1224 prepare_transfer (&ta, ST (0), ST (1));
1225 break;
1226
1227 case 2:
1228 prepare_schedule (&ta);
1229 break;
1230
1231 case 3:
1232 prepare_cede (&ta);
1233 break;
1234
1235 case 4:
1236 if (!prepare_cede_notself (&ta))
1237 XSRETURN_EMPTY;
1238
1239 break;
1240 }
1241
1242 BARRIER;
1243 TRANSFER (ta);
1244
1245 if (GIMME_V != G_VOID && ta.next != ta.prev)
1246 XSRETURN_YES;
1247}
1248
1249bool
1250_destroy (SV *coro_sv)
1251 CODE:
1252 RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1253 OUTPUT:
1254 RETVAL
1024 1255
1025void 1256void
1026DESTROY(coro)
1027 Coro::State coro
1028 CODE:
1029
1030 if (coro->mainstack && coro->mainstack != main_mainstack)
1031 {
1032 struct coro temp;
1033
1034 PUTBACK;
1035 SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
1036 LOAD (aTHX_ coro);
1037 SPAGAIN;
1038
1039 destroy_stacks (aTHX);
1040
1041 LOAD ((&temp)); /* this will get rid of defsv etc.. */
1042 SPAGAIN;
1043
1044 coro->mainstack = 0;
1045 }
1046
1047 deallocate_stack (coro);
1048 SvREFCNT_dec (coro->args);
1049 Safefree (coro);
1050
1051void
1052_exit(code) 1257_exit (code)
1053 int code 1258 int code
1054 PROTOTYPE: $ 1259 PROTOTYPE: $
1055 CODE: 1260 CODE:
1056 _exit (code); 1261 _exit (code);
1057 1262
1058MODULE = Coro::State PACKAGE = Coro::Cont 1263int
1264cctx_count ()
1265 CODE:
1266 RETVAL = cctx_count;
1267 OUTPUT:
1268 RETVAL
1059 1269
1060# this is slightly dirty (should expose a c-level api) 1270int
1061 1271cctx_idle ()
1062void 1272 CODE:
1063yield(...) 1273 RETVAL = cctx_idle;
1064 PROTOTYPE: @ 1274 OUTPUT:
1065 CODE: 1275 RETVAL
1066 SV *yieldstack;
1067 SV *sv;
1068 AV *defav = GvAV (PL_defgv);
1069 struct coro *prev, *next;
1070
1071 yieldstack = *hv_fetch (
1072 (HV *)SvRV (GvSV (coro_current)),
1073 "yieldstack", sizeof ("yieldstack") - 1,
1074 0
1075 );
1076
1077 /* set up @_ -- ugly */
1078 av_clear (defav);
1079 av_fill (defav, items - 1);
1080 while (items--)
1081 av_store (defav, items, SvREFCNT_inc (ST(items)));
1082
1083 sv = av_pop ((AV *)SvRV (yieldstack));
1084 prev = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))));
1085 next = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))));
1086 SvREFCNT_dec (sv);
1087
1088 transfer (aTHX_ prev, next, 0);
1089 1276
1090MODULE = Coro::State PACKAGE = Coro 1277MODULE = Coro::State PACKAGE = Coro
1091 1278
1092# this is slightly dirty (should expose a c-level api)
1093
1094BOOT: 1279BOOT:
1095{ 1280{
1096 int i; 1281 int i;
1282
1097 HV *stash = gv_stashpv ("Coro", TRUE); 1283 coro_stash = gv_stashpv ("Coro", TRUE);
1098 1284
1099 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1285 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1100 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1286 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1101 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1287 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1102 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1288 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1103 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1289 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1104 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1290 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1105 1291
1106 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); 1292 coro_current = get_sv ("Coro::current", FALSE);
1107 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); 1293 SvREADONLY_on (coro_current);
1108 1294
1109 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1295 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1110 coro_ready[i] = newAV (); 1296 coro_ready[i] = newAV ();
1111 1297
1112 { 1298 {
1113 SV *sv = perl_get_sv("Coro::API", 1); 1299 SV *sv = perl_get_sv("Coro::API", 1);
1114 1300
1115 coroapi.schedule = api_schedule; 1301 coroapi.schedule = api_schedule;
1302 coroapi.save = api_save;
1116 coroapi.cede = api_cede; 1303 coroapi.cede = api_cede;
1304 coroapi.cede_notself = api_cede_notself;
1117 coroapi.ready = api_ready; 1305 coroapi.ready = api_ready;
1306 coroapi.is_ready = api_is_ready;
1118 coroapi.nready = &coro_nready; 1307 coroapi.nready = &coro_nready;
1119 coroapi.current = coro_current; 1308 coroapi.current = coro_current;
1120 1309
1121 GCoroAPI = &coroapi; 1310 GCoroAPI = &coroapi;
1122 sv_setiv(sv, (IV)&coroapi); 1311 sv_setiv (sv, (IV)&coroapi);
1123 SvREADONLY_on(sv); 1312 SvREADONLY_on (sv);
1124 } 1313 }
1125} 1314}
1126 1315
1127#if !PERL_MICRO
1128
1129void 1316void
1130ready(self) 1317_set_current (SV *current)
1131 SV * self
1132 PROTOTYPE: $ 1318 PROTOTYPE: $
1133 CODE: 1319 CODE:
1134 api_ready (self); 1320 SvREFCNT_dec (SvRV (coro_current));
1135 1321 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1136#endif
1137 1322
1138int 1323int
1324prio (Coro::State coro, int newprio = 0)
1325 ALIAS:
1326 nice = 1
1327 CODE:
1328{
1329 RETVAL = coro->prio;
1330
1331 if (items > 1)
1332 {
1333 if (ix)
1334 newprio = coro->prio - newprio;
1335
1336 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1337 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1338
1339 coro->prio = newprio;
1340 }
1341}
1342 OUTPUT:
1343 RETVAL
1344
1345SV *
1346ready (SV *self)
1347 PROTOTYPE: $
1348 CODE:
1349 RETVAL = boolSV (api_ready (self));
1350 OUTPUT:
1351 RETVAL
1352
1353SV *
1354is_ready (SV *self)
1355 PROTOTYPE: $
1356 CODE:
1357 RETVAL = boolSV (api_is_ready (self));
1358 OUTPUT:
1359 RETVAL
1360
1361int
1139nready(...) 1362nready (...)
1140 PROTOTYPE: 1363 PROTOTYPE:
1141 CODE: 1364 CODE:
1142 RETVAL = coro_nready; 1365 RETVAL = coro_nready;
1143 OUTPUT: 1366 OUTPUT:
1144 RETVAL 1367 RETVAL
1145 1368
1146void 1369MODULE = Coro::State PACKAGE = Coro::AIO
1147schedule(...) 1370
1148 PROTOTYPE: 1371SV *
1372_get_state ()
1149 CODE: 1373 CODE:
1150 api_schedule ();
1151
1152void
1153cede(...)
1154 PROTOTYPE:
1155 CODE:
1156 api_cede ();
1157
1158# and these are hacks
1159SV *
1160_aio_get_state ()
1161 CODE:
1162{ 1374{
1163 struct { 1375 struct io_state *data;
1164 int errorno;
1165 int laststype;
1166 int laststatval;
1167 Stat_t statcache;
1168 } data;
1169 1376
1377 RETVAL = newSV (sizeof (struct io_state));
1378 data = (struct io_state *)SvPVX (RETVAL);
1379 SvCUR_set (RETVAL, sizeof (struct io_state));
1380 SvPOK_only (RETVAL);
1381
1170 data.errorno = errno; 1382 data->errorno = errno;
1171 data.laststype = PL_laststype; 1383 data->laststype = PL_laststype;
1172 data.laststatval = PL_laststatval; 1384 data->laststatval = PL_laststatval;
1173 data.statcache = PL_statcache; 1385 data->statcache = PL_statcache;
1174
1175 RETVAL = newSVpvn ((char *)&data, sizeof data);
1176} 1386}
1177 OUTPUT: 1387 OUTPUT:
1178 RETVAL 1388 RETVAL
1179 1389
1180void 1390void
1181_aio_set_state (char *data_) 1391_set_state (char *data_)
1182 PROTOTYPE: $ 1392 PROTOTYPE: $
1183 CODE: 1393 CODE:
1184{ 1394{
1185 struct { 1395 struct io_state *data = (void *)data_;
1186 int errorno;
1187 int laststype;
1188 int laststatval;
1189 Stat_t statcache;
1190 } *data = (void *)data_;
1191 1396
1192 errno = data->errorno; 1397 errno = data->errorno;
1193 PL_laststype = data->laststype; 1398 PL_laststype = data->laststype;
1194 PL_laststatval = data->laststatval; 1399 PL_laststatval = data->laststatval;
1195 PL_statcache = data->statcache; 1400 PL_statcache = data->statcache;
1196} 1401}
1402

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