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Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.247 by root, Wed Sep 24 21:31:29 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13/* the maximum number of idle cctx that will be pooled */
14#define MAX_IDLE_CCTX 8
15
16#define PERL_VERSION_ATLEAST(a,b,c) \
17 (PERL_REVISION > (a) \
18 || (PERL_REVISION == (a) \
19 && (PERL_VERSION > (b) \
20 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22#if !PERL_VERSION_ATLEAST (5,6,0)
23# ifndef PL_ppaddr
24# define PL_ppaddr ppaddr
25# endif
26# ifndef call_sv
27# define call_sv perl_call_sv
28# endif
29# ifndef get_sv
30# define get_sv perl_get_sv
31# endif
32# ifndef get_cv
33# define get_cv perl_get_cv
34# endif
35# ifndef IS_PADGV
36# define IS_PADGV(v) 0
37# endif
38# ifndef IS_PADCONST
39# define IS_PADCONST(v) 0
40# endif
41#endif
42
43/* 5.8.7 */
44#ifndef SvRV_set
45# define SvRV_set(s,v) SvRV(s) = (v)
46#endif
47 12
48#include <stdio.h> 13#include <stdio.h>
49#include <errno.h> 14#include <errno.h>
50#include <assert.h> 15#include <assert.h>
51 16
52#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
53# undef STACKGUARD 18# undef setjmp
54#endif 19# undef longjmp
55 20# undef _exit
56#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
57# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
58#endif 24#endif
59 25
60#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
61# include <unistd.h> 27# include <unistd.h>
62# include <sys/mman.h> 28# include <sys/mman.h>
… …
78#else 44#else
79# define PAGESIZE 0 45# define PAGESIZE 0
80# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
81#endif 47#endif
82 48
83/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
84 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
85 * and should be unique. */ 51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.8.8 */
87#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0
89#endif
90#ifndef newSV
91# define newSV(l) NEWSV(0,l)
92#endif
93
94/* 5.11 */
95#ifndef CxHASARGS
96# define CxHASARGS(cx) (cx)->blk_sub.hasargs
97#endif
98
99/* 5.8.7 */
100#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v)
102#endif
103
104#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
105# undef CORO_STACKGUARD
106#endif
107
108#ifndef CORO_STACKGUARD
109# define CORO_STACKGUARD 0
110#endif
111
112/* prefer perl internal functions over our own? */
113#ifndef CORO_PREFER_PERL_FUNCTIONS
114# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif
116
117/* The next macros try to return the current stack pointer, in an as
118 * portable way as possible. */
86#define dSTACKLEVEL int stacklevel 119#define dSTACKLEVEL volatile char stacklevel
87#define STACKLEVEL ((void *)&stacklevel) 120#define STACKLEVEL ((void *)&stacklevel)
88 121
89#define IN_DESTRUCT (PL_main_cv == Nullcv) 122#define IN_DESTRUCT (PL_main_cv == Nullcv)
90 123
91#if __GNUC__ >= 3 124#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x) 125# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value))
93#else 128#else
94# define attribute(x) 129# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr)
95#endif 132#endif
133
134#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1)
96 136
97#define NOINLINE attribute ((noinline)) 137#define NOINLINE attribute ((noinline))
98 138
99#include "CoroAPI.h" 139#include "CoroAPI.h"
100 140
… …
105#else 145#else
106# define LOCK (void)0 146# define LOCK (void)0
107# define UNLOCK (void)0 147# define UNLOCK (void)0
108#endif 148#endif
109 149
150/* helper storage struct for Coro::AIO */
110struct io_state 151struct io_state
111{ 152{
112 int errorno; 153 int errorno;
113 I32 laststype; 154 I32 laststype;
114 int laststatval; 155 int laststatval;
115 Stat_t statcache; 156 Stat_t statcache;
116}; 157};
117 158
159static double (*nvtime)(); /* so why doesn't it take void? */
160
161static size_t coro_stacksize = CORO_STACKSIZE;
118static struct CoroAPI coroapi; 162static struct CoroAPI coroapi;
119static AV *main_mainstack; /* used to differentiate between $main and others */ 163static AV *main_mainstack; /* used to differentiate between $main and others */
164static JMPENV *main_top_env;
120static HV *coro_state_stash, *coro_stash; 165static HV *coro_state_stash, *coro_stash;
121static SV *coro_mortal; /* will be freed after next transfer */ 166static volatile SV *coro_mortal; /* will be freed after next transfer */
167
168static GV *irsgv; /* $/ */
169static GV *stdoutgv; /* *STDOUT */
170static SV *rv_diehook;
171static SV *rv_warnhook;
172static HV *hv_sig; /* %SIG */
173
174/* async_pool helper stuff */
175static SV *sv_pool_rss;
176static SV *sv_pool_size;
177static AV *av_async_pool;
178
179/* Coro::AnyEvent */
180static SV *sv_activity;
122 181
123static struct coro_cctx *cctx_first; 182static struct coro_cctx *cctx_first;
124static int cctx_count, cctx_idle; 183static int cctx_count, cctx_idle;
184
185enum {
186 CC_MAPPED = 0x01,
187 CC_NOREUSE = 0x02, /* throw this away after tracing */
188 CC_TRACE = 0x04,
189 CC_TRACE_SUB = 0x08, /* trace sub calls */
190 CC_TRACE_LINE = 0x10, /* trace each statement */
191 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
192};
125 193
126/* this is a structure representing a c-level coroutine */ 194/* this is a structure representing a c-level coroutine */
127typedef struct coro_cctx { 195typedef struct coro_cctx {
128 struct coro_cctx *next; 196 struct coro_cctx *next;
129 197
130 /* the stack */ 198 /* the stack */
131 void *sptr; 199 void *sptr;
132 long ssize; /* positive == mmap, otherwise malloc */ 200 size_t ssize;
133 201
134 /* cpu state */ 202 /* cpu state */
135 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
136 JMPENV *top_env; 205 JMPENV *top_env;
137 coro_context cctx; 206 coro_context cctx;
138 207
139 int inuse;
140
141#if USE_VALGRIND 208#if CORO_USE_VALGRIND
142 int valgrind_id; 209 int valgrind_id;
143#endif 210#endif
211 unsigned char flags;
144} coro_cctx; 212} coro_cctx;
145 213
146enum { 214enum {
147 CF_RUNNING = 0x0001, /* coroutine is running */ 215 CF_RUNNING = 0x0001, /* coroutine is running */
148 CF_READY = 0x0002, /* coroutine is ready */ 216 CF_READY = 0x0002, /* coroutine is ready */
149 CF_NEW = 0x0004, /* ahs never been switched to */ 217 CF_NEW = 0x0004, /* has never been switched to */
218 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150}; 219};
220
221/* the structure where most of the perl state is stored, overlaid on the cxstack */
222typedef struct {
223 SV *defsv;
224 AV *defav;
225 SV *errsv;
226 SV *irsgv;
227#define VAR(name,type) type name;
228# include "state.h"
229#undef VAR
230} perl_slots;
231
232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
151 233
152/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
153struct coro { 235struct coro {
154 /* the c coroutine allocated to this perl coroutine, if any */ 236 /* the c coroutine allocated to this perl coroutine, if any */
155 coro_cctx *cctx; 237 coro_cctx *cctx;
156 238
239 /* process data */
240 AV *mainstack;
241 perl_slots *slot; /* basically the saved sp */
242
157 /* data associated with this coroutine (initial args) */ 243 AV *args; /* data associated with this coroutine (initial args) */
158 AV *args; 244 int refcnt; /* coroutines are refcounted, yes */
159 int refcnt;
160 int save; /* CORO_SAVE flags */
161 int flags; /* CF_ flags */ 245 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */
162 247
163 /* optionally saved, might be zero */ 248 /* statistics */
164 AV *defav; /* @_ */ 249 int usecount; /* number of transfers to this coro */
165 SV *defsv; /* $_ */
166 SV *errsv; /* $@ */
167 SV *irssv; /* $/ */
168 SV *irssv_sv; /* real $/ cache */
169
170#define VAR(name,type) type name;
171# include "state.h"
172#undef VAR
173 250
174 /* coro process data */ 251 /* coro process data */
175 int prio; 252 int prio;
253 SV *throw; /* exception to be thrown */
254
255 /* async_pool */
256 SV *saved_deffh;
257
258 /* linked list */
259 struct coro *next, *prev;
176}; 260};
177 261
178typedef struct coro *Coro__State; 262typedef struct coro *Coro__State;
179typedef struct coro *Coro__State_or_hashref; 263typedef struct coro *Coro__State_or_hashref;
180 264
265/** Coro ********************************************************************/
266
267#define PRIO_MAX 3
268#define PRIO_HIGH 1
269#define PRIO_NORMAL 0
270#define PRIO_LOW -1
271#define PRIO_IDLE -3
272#define PRIO_MIN -4
273
274/* for Coro.pm */
275static SV *coro_current;
276static SV *coro_readyhook;
277static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
278static int coro_nready;
279static struct coro *coro_first;
280
281/** lowlevel stuff **********************************************************/
282
283static SV *
284coro_get_sv (pTHX_ const char *name, int create)
285{
286#if PERL_VERSION_ATLEAST (5,10,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_sv (name, create);
289#endif
290 return get_sv (name, create);
291}
292
181static AV * 293static AV *
294coro_get_av (pTHX_ const char *name, int create)
295{
296#if PERL_VERSION_ATLEAST (5,10,0)
297 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
298 get_av (name, create);
299#endif
300 return get_av (name, create);
301}
302
303static HV *
304coro_get_hv (pTHX_ const char *name, int create)
305{
306#if PERL_VERSION_ATLEAST (5,10,0)
307 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
308 get_hv (name, create);
309#endif
310 return get_hv (name, create);
311}
312
313static AV *
182coro_clone_padlist (CV *cv) 314coro_clone_padlist (pTHX_ CV *cv)
183{ 315{
184 AV *padlist = CvPADLIST (cv); 316 AV *padlist = CvPADLIST (cv);
185 AV *newpadlist, *newpad; 317 AV *newpadlist, *newpad;
186 318
187 newpadlist = newAV (); 319 newpadlist = newAV ();
188 AvREAL_off (newpadlist); 320 AvREAL_off (newpadlist);
189#if PERL_VERSION_ATLEAST (5,9,0) 321#if PERL_VERSION_ATLEAST (5,10,0)
190 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 322 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191#else 323#else
192 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 324 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193#endif 325#endif
194 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 326 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
… …
199 331
200 return newpadlist; 332 return newpadlist;
201} 333}
202 334
203static void 335static void
204free_padlist (AV *padlist) 336free_padlist (pTHX_ AV *padlist)
205{ 337{
206 /* may be during global destruction */ 338 /* may be during global destruction */
207 if (SvREFCNT (padlist)) 339 if (SvREFCNT (padlist))
208 { 340 {
209 I32 i = AvFILLp (padlist); 341 I32 i = AvFILLp (padlist);
… …
230 AV *padlist; 362 AV *padlist;
231 AV *av = (AV *)mg->mg_obj; 363 AV *av = (AV *)mg->mg_obj;
232 364
233 /* casting is fun. */ 365 /* casting is fun. */
234 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 366 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235 free_padlist (padlist); 367 free_padlist (aTHX_ padlist);
236 368
237 SvREFCNT_dec (av); 369 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
238 370
239 return 0; 371 return 0;
240} 372}
241 373
242#define PERL_MAGIC_coro PERL_MAGIC_ext 374#define CORO_MAGIC_type_cv PERL_MAGIC_ext
375#define CORO_MAGIC_type_state PERL_MAGIC_ext
243 376
244static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 377static MGVTBL coro_cv_vtbl = {
378 0, 0, 0, 0,
379 coro_cv_free
380};
245 381
246#define CORO_MAGIC(cv) \ 382#define CORO_MAGIC(sv,type) \
247 SvMAGIC (cv) \ 383 SvMAGIC (sv) \
248 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 384 ? SvMAGIC (sv)->mg_type == type \
249 ? SvMAGIC (cv) \ 385 ? SvMAGIC (sv) \
250 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 386 : mg_find (sv, type) \
251 : 0 387 : 0
388
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
391
392static struct coro *
393SvSTATE_ (pTHX_ SV *coro)
394{
395 HV *stash;
396 MAGIC *mg;
397
398 if (SvROK (coro))
399 coro = SvRV (coro);
400
401 if (expect_false (SvTYPE (coro) != SVt_PVHV))
402 croak ("Coro::State object required");
403
404 stash = SvSTASH (coro);
405 if (expect_false (stash != coro_stash && stash != coro_state_stash))
406 {
407 /* very slow, but rare, check */
408 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
409 croak ("Coro::State object required");
410 }
411
412 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr;
414}
415
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
252 417
253/* the next two functions merely cache the padlists */ 418/* the next two functions merely cache the padlists */
254static void 419static void
255get_padlist (CV *cv) 420get_padlist (pTHX_ CV *cv)
256{ 421{
257 MAGIC *mg = CORO_MAGIC (cv); 422 MAGIC *mg = CORO_MAGIC_cv (cv);
258 AV *av; 423 AV *av;
259 424
260 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 425 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 426 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262 else 427 else
263 { 428 {
264#if 0 429#if CORO_PREFER_PERL_FUNCTIONS
265 /* this is probably cleaner, but also slower? */ 430 /* this is probably cleaner? but also slower! */
431 /* in practise, it seems to be less stable */
266 CV *cp = Perl_cv_clone (cv); 432 CV *cp = Perl_cv_clone (cv);
267 CvPADLIST (cv) = CvPADLIST (cp); 433 CvPADLIST (cv) = CvPADLIST (cp);
268 CvPADLIST (cp) = 0; 434 CvPADLIST (cp) = 0;
269 SvREFCNT_dec (cp); 435 SvREFCNT_dec (cp);
270#else 436#else
271 CvPADLIST (cv) = coro_clone_padlist (cv); 437 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272#endif 438#endif
273 } 439 }
274} 440}
275 441
276static void 442static void
277put_padlist (CV *cv) 443put_padlist (pTHX_ CV *cv)
278{ 444{
279 MAGIC *mg = CORO_MAGIC (cv); 445 MAGIC *mg = CORO_MAGIC_cv (cv);
280 AV *av; 446 AV *av;
281 447
282 if (!mg) 448 if (expect_false (!mg))
283 { 449 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
284 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
285 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
286 mg->mg_virtual = &vtbl_coro;
287 mg->mg_obj = (SV *)newAV ();
288 }
289 450
290 av = (AV *)mg->mg_obj; 451 av = (AV *)mg->mg_obj;
291 452
292 if (AvFILLp (av) >= AvMAX (av)) 453 if (expect_false (AvFILLp (av) >= AvMAX (av)))
293 av_extend (av, AvMAX (av) + 1); 454 av_extend (av, AvMAX (av) + 1);
294 455
295 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 456 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296} 457}
297 458
298#define SB do { 459/** load & save, init *******************************************************/
299#define SE } while (0)
300
301#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302 460
303static void 461static void
304load_perl (Coro__State c) 462load_perl (pTHX_ Coro__State c)
305{ 463{
464 perl_slots *slot = c->slot;
465 c->slot = 0;
466
467 PL_mainstack = c->mainstack;
468
469 GvSV (PL_defgv) = slot->defsv;
470 GvAV (PL_defgv) = slot->defav;
471 GvSV (PL_errgv) = slot->errsv;
472 GvSV (irsgv) = slot->irsgv;
473
306#define VAR(name,type) PL_ ## name = c->name; 474 #define VAR(name,type) PL_ ## name = slot->name;
307# include "state.h" 475 # include "state.h"
308#undef VAR 476 #undef VAR
309
310 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313 if (c->irssv)
314 {
315 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
316 SvREFCNT_dec (c->irssv);
317 else
318 {
319 REPLACE_SV (PL_rs, c->irssv);
320 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321 sv_setsv (c->irssv_sv, PL_rs);
322 }
323 }
324 477
325 { 478 {
326 dSP; 479 dSP;
480
327 CV *cv; 481 CV *cv;
328 482
329 /* now do the ugly restore mess */ 483 /* now do the ugly restore mess */
330 while ((cv = (CV *)POPs)) 484 while (expect_true (cv = (CV *)POPs))
331 { 485 {
332 put_padlist (cv); /* mark this padlist as available */ 486 put_padlist (aTHX_ cv); /* mark this padlist as available */
333 CvDEPTH (cv) = PTR2IV (POPs); 487 CvDEPTH (cv) = PTR2IV (POPs);
334 CvPADLIST (cv) = (AV *)POPs; 488 CvPADLIST (cv) = (AV *)POPs;
335 } 489 }
336 490
337 PUTBACK; 491 PUTBACK;
338 } 492 }
339} 493}
340 494
341static void 495static void
342save_perl (Coro__State c) 496save_perl (pTHX_ Coro__State c)
343{ 497{
344 { 498 {
345 dSP; 499 dSP;
346 I32 cxix = cxstack_ix; 500 I32 cxix = cxstack_ix;
347 PERL_CONTEXT *ccstk = cxstack; 501 PERL_CONTEXT *ccstk = cxstack;
… …
350 /* 504 /*
351 * the worst thing you can imagine happens first - we have to save 505 * the worst thing you can imagine happens first - we have to save
352 * (and reinitialize) all cv's in the whole callchain :( 506 * (and reinitialize) all cv's in the whole callchain :(
353 */ 507 */
354 508
355 PUSHs (Nullsv); 509 XPUSHs (Nullsv);
356 /* this loop was inspired by pp_caller */ 510 /* this loop was inspired by pp_caller */
357 for (;;) 511 for (;;)
358 { 512 {
359 while (cxix >= 0) 513 while (expect_true (cxix >= 0))
360 { 514 {
361 PERL_CONTEXT *cx = &ccstk[cxix--]; 515 PERL_CONTEXT *cx = &ccstk[cxix--];
362 516
363 if (CxTYPE (cx) == CXt_SUB) 517 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
364 { 518 {
365 CV *cv = cx->blk_sub.cv; 519 CV *cv = cx->blk_sub.cv;
366 520
367 if (CvDEPTH (cv)) 521 if (expect_true (CvDEPTH (cv)))
368 { 522 {
369 EXTEND (SP, 3); 523 EXTEND (SP, 3);
370
371 PUSHs ((SV *)CvPADLIST (cv)); 524 PUSHs ((SV *)CvPADLIST (cv));
372 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 525 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
373 PUSHs ((SV *)cv); 526 PUSHs ((SV *)cv);
374 527
375 CvDEPTH (cv) = 0; 528 CvDEPTH (cv) = 0;
376 get_padlist (cv); 529 get_padlist (aTHX_ cv);
377 } 530 }
378 } 531 }
379#ifdef CXt_FORMAT
380 else if (CxTYPE (cx) == CXt_FORMAT)
381 {
382 /* I never used formats, so how should I know how these are implemented? */
383 /* my bold guess is as a simple, plain sub... */
384 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385 }
386#endif
387 } 532 }
388 533
389 if (top_si->si_type == PERLSI_MAIN) 534 if (expect_true (top_si->si_type == PERLSI_MAIN))
390 break; 535 break;
391 536
392 top_si = top_si->si_prev; 537 top_si = top_si->si_prev;
393 ccstk = top_si->si_cxstack; 538 ccstk = top_si->si_cxstack;
394 cxix = top_si->si_cxix; 539 cxix = top_si->si_cxix;
395 } 540 }
396 541
397 PUTBACK; 542 PUTBACK;
398 } 543 }
399 544
400 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 545 /* allocate some space on the context stack for our purposes */
401 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 546 /* we manually unroll here, as usually 2 slots is enough */
402 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 547 if (SLOT_COUNT >= 1) CXINC;
403 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 548 if (SLOT_COUNT >= 2) CXINC;
549 if (SLOT_COUNT >= 3) CXINC;
550 {
551 int i;
552 for (i = 3; i < SLOT_COUNT; ++i)
553 CXINC;
554 }
555 cxstack_ix -= SLOT_COUNT; /* undo allocation */
404 556
557 c->mainstack = PL_mainstack;
558
559 {
560 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
561
562 slot->defav = GvAV (PL_defgv);
563 slot->defsv = DEFSV;
564 slot->errsv = ERRSV;
565 slot->irsgv = GvSV (irsgv);
566
405#define VAR(name,type)c->name = PL_ ## name; 567 #define VAR(name,type) slot->name = PL_ ## name;
406# include "state.h" 568 # include "state.h"
407#undef VAR 569 #undef VAR
570 }
408} 571}
409 572
410/* 573/*
411 * allocate various perl stacks. This is an exact copy 574 * allocate various perl stacks. This is an exact copy
412 * of perl.c:init_stacks, except that it uses less memory 575 * of perl.c:init_stacks, except that it uses less memory
413 * on the (sometimes correct) assumption that coroutines do 576 * on the (sometimes correct) assumption that coroutines do
414 * not usually need a lot of stackspace. 577 * not usually need a lot of stackspace.
415 */ 578 */
579#if CORO_PREFER_PERL_FUNCTIONS
580# define coro_init_stacks init_stacks
581#else
416static void 582static void
417coro_init_stacks () 583coro_init_stacks (pTHX)
418{ 584{
419 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 585 PL_curstackinfo = new_stackinfo(32, 8);
420 PL_curstackinfo->si_type = PERLSI_MAIN; 586 PL_curstackinfo->si_type = PERLSI_MAIN;
421 PL_curstack = PL_curstackinfo->si_stack; 587 PL_curstack = PL_curstackinfo->si_stack;
422 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 588 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423 589
424 PL_stack_base = AvARRAY(PL_curstack); 590 PL_stack_base = AvARRAY(PL_curstack);
425 PL_stack_sp = PL_stack_base; 591 PL_stack_sp = PL_stack_base;
426 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 592 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427 593
428 New(50,PL_tmps_stack,128,SV*); 594 New(50,PL_tmps_stack,32,SV*);
429 PL_tmps_floor = -1; 595 PL_tmps_floor = -1;
430 PL_tmps_ix = -1; 596 PL_tmps_ix = -1;
431 PL_tmps_max = 128; 597 PL_tmps_max = 32;
432 598
433 New(54,PL_markstack,32,I32); 599 New(54,PL_markstack,16,I32);
434 PL_markstack_ptr = PL_markstack; 600 PL_markstack_ptr = PL_markstack;
435 PL_markstack_max = PL_markstack + 32; 601 PL_markstack_max = PL_markstack + 16;
436 602
437#ifdef SET_MARK_OFFSET 603#ifdef SET_MARK_OFFSET
438 SET_MARK_OFFSET; 604 SET_MARK_OFFSET;
439#endif 605#endif
440 606
441 New(54,PL_scopestack,32,I32); 607 New(54,PL_scopestack,8,I32);
442 PL_scopestack_ix = 0; 608 PL_scopestack_ix = 0;
443 PL_scopestack_max = 32; 609 PL_scopestack_max = 8;
444 610
445 New(54,PL_savestack,64,ANY); 611 New(54,PL_savestack,24,ANY);
446 PL_savestack_ix = 0; 612 PL_savestack_ix = 0;
447 PL_savestack_max = 64; 613 PL_savestack_max = 24;
448 614
449#if !PERL_VERSION_ATLEAST (5,9,0) 615#if !PERL_VERSION_ATLEAST (5,10,0)
450 New(54,PL_retstack,16,OP*); 616 New(54,PL_retstack,4,OP*);
451 PL_retstack_ix = 0; 617 PL_retstack_ix = 0;
452 PL_retstack_max = 16; 618 PL_retstack_max = 4;
453#endif 619#endif
454} 620}
621#endif
455 622
456/* 623/*
457 * destroy the stacks, the callchain etc... 624 * destroy the stacks, the callchain etc...
458 */ 625 */
459static void 626static void
460coro_destroy_stacks () 627coro_destroy_stacks (pTHX)
461{ 628{
462 if (!IN_DESTRUCT)
463 {
464 /* is this ugly, I ask? */
465 LEAVE_SCOPE (0);
466
467 /* sure it is, but more important: is it correct?? :/ */
468 FREETMPS;
469
470 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
471 }
472
473 while (PL_curstackinfo->si_next) 629 while (PL_curstackinfo->si_next)
474 PL_curstackinfo = PL_curstackinfo->si_next; 630 PL_curstackinfo = PL_curstackinfo->si_next;
475 631
476 while (PL_curstackinfo) 632 while (PL_curstackinfo)
477 { 633 {
478 PERL_SI *p = PL_curstackinfo->si_prev; 634 PERL_SI *p = PL_curstackinfo->si_prev;
479 635
480 { /*D*//*remove*/
481 dSP;
482 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
483 PUTBACK; /* possibly superfluous */
484 }
485
486 if (!IN_DESTRUCT) 636 if (!IN_DESTRUCT)
487 {
488 dounwind (-1);/*D*//*remove*/
489 SvREFCNT_dec (PL_curstackinfo->si_stack); 637 SvREFCNT_dec (PL_curstackinfo->si_stack);
490 }
491 638
492 Safefree (PL_curstackinfo->si_cxstack); 639 Safefree (PL_curstackinfo->si_cxstack);
493 Safefree (PL_curstackinfo); 640 Safefree (PL_curstackinfo);
494 PL_curstackinfo = p; 641 PL_curstackinfo = p;
495 } 642 }
496 643
497 Safefree (PL_tmps_stack); 644 Safefree (PL_tmps_stack);
498 Safefree (PL_markstack); 645 Safefree (PL_markstack);
499 Safefree (PL_scopestack); 646 Safefree (PL_scopestack);
500 Safefree (PL_savestack); 647 Safefree (PL_savestack);
501#if !PERL_VERSION_ATLEAST (5,9,0) 648#if !PERL_VERSION_ATLEAST (5,10,0)
502 Safefree (PL_retstack); 649 Safefree (PL_retstack);
503#endif 650#endif
504} 651}
505 652
653static size_t
654coro_rss (pTHX_ struct coro *coro)
655{
656 size_t rss = sizeof (*coro);
657
658 if (coro->mainstack)
659 {
660 perl_slots tmp_slot;
661 perl_slots *slot;
662
663 if (coro->flags & CF_RUNNING)
664 {
665 slot = &tmp_slot;
666
667 #define VAR(name,type) slot->name = PL_ ## name;
668 # include "state.h"
669 #undef VAR
670 }
671 else
672 slot = coro->slot;
673
674 if (slot)
675 {
676 rss += sizeof (slot->curstackinfo);
677 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
678 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
679 rss += slot->tmps_max * sizeof (SV *);
680 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
681 rss += slot->scopestack_max * sizeof (I32);
682 rss += slot->savestack_max * sizeof (ANY);
683
684#if !PERL_VERSION_ATLEAST (5,10,0)
685 rss += slot->retstack_max * sizeof (OP *);
686#endif
687 }
688 }
689
690 return rss;
691}
692
693/** coroutine stack handling ************************************************/
694
695static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
696static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
697static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
698
699/* apparently < 5.8.8 */
700#ifndef MgPV_nolen_const
701#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
702 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
703 (const char*)(mg)->mg_ptr)
704#endif
705
706/*
707 * This overrides the default magic get method of %SIG elements.
708 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
709 * and instead of tryign to save and restore the hash elements, we just provide
710 * readback here.
711 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
712 * not expecting this to actually change the hook. This is a potential problem
713 * when a schedule happens then, but we ignore this.
714 */
715static int
716coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
717{
718 const char *s = MgPV_nolen_const (mg);
719
720 if (*s == '_')
721 {
722 SV **svp = 0;
723
724 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
725 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
726
727 if (svp)
728 {
729 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
730 return 0;
731 }
732 }
733
734 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
735}
736
737static int
738coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
739{
740 const char *s = MgPV_nolen_const (mg);
741
742 if (*s == '_')
743 {
744 SV **svp = 0;
745
746 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
747 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
748
749 if (svp)
750 {
751 SV *old = *svp;
752 *svp = 0;
753 SvREFCNT_dec (old);
754 return 0;
755 }
756 }
757
758 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
759}
760
761static int
762coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
763{
764 const char *s = MgPV_nolen_const (mg);
765
766 if (*s == '_')
767 {
768 SV **svp = 0;
769
770 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
771 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
772
773 if (svp)
774 {
775 SV *old = *svp;
776 *svp = newSVsv (sv);
777 SvREFCNT_dec (old);
778 return 0;
779 }
780 }
781
782 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
783}
784
506static void 785static void
507setup_coro (struct coro *coro) 786coro_setup (pTHX_ struct coro *coro)
508{ 787{
509 /* 788 /*
510 * emulate part of the perl startup here. 789 * emulate part of the perl startup here.
511 */ 790 */
512
513 coro_init_stacks (); 791 coro_init_stacks (aTHX);
514 792
793 PL_runops = RUNOPS_DEFAULT;
515 PL_curcop = &PL_compiling; 794 PL_curcop = &PL_compiling;
516 PL_in_eval = EVAL_NULL; 795 PL_in_eval = EVAL_NULL;
796 PL_comppad = 0;
517 PL_curpm = 0; 797 PL_curpm = 0;
798 PL_curpad = 0;
518 PL_localizing = 0; 799 PL_localizing = 0;
519 PL_dirty = 0; 800 PL_dirty = 0;
520 PL_restartop = 0; 801 PL_restartop = 0;
802#if PERL_VERSION_ATLEAST (5,10,0)
803 PL_parser = 0;
804#endif
805
806 /* recreate the die/warn hooks */
807 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
808 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
809
810 GvSV (PL_defgv) = newSV (0);
811 GvAV (PL_defgv) = coro->args; coro->args = 0;
812 GvSV (PL_errgv) = newSV (0);
813 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
814 PL_rs = newSVsv (GvSV (irsgv));
815 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
521 816
522 { 817 {
523 dSP; 818 dSP;
524 LOGOP myop; 819 LOGOP myop;
525 820
526 SvREFCNT_dec (GvAV (PL_defgv));
527 GvAV (PL_defgv) = coro->args; coro->args = 0;
528
529 Zero (&myop, 1, LOGOP); 821 Zero (&myop, 1, LOGOP);
530 myop.op_next = Nullop; 822 myop.op_next = Nullop;
531 myop.op_flags = OPf_WANT_VOID; 823 myop.op_flags = OPf_WANT_VOID;
532 824
533 PUSHMARK (SP); 825 PUSHMARK (SP);
534 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 826 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
535 PUTBACK; 827 PUTBACK;
536 PL_op = (OP *)&myop; 828 PL_op = (OP *)&myop;
537 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 829 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
538 SPAGAIN; 830 SPAGAIN;
539 } 831 }
540 832
541 ENTER; /* necessary e.g. for dounwind */ 833 /* this newly created coroutine might be run on an existing cctx which most
834 * likely was suspended in set_stacklevel, called from entersub.
835 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
836 * so we ENTER here for symmetry
837 */
838 ENTER;
542} 839}
543 840
544static void 841static void
842coro_destroy (pTHX_ struct coro *coro)
843{
844 if (!IN_DESTRUCT)
845 {
846 /* restore all saved variables and stuff */
847 LEAVE_SCOPE (0);
848 assert (PL_tmps_floor == -1);
849
850 /* free all temporaries */
851 FREETMPS;
852 assert (PL_tmps_ix == -1);
853
854 /* unwind all extra stacks */
855 POPSTACK_TO (PL_mainstack);
856
857 /* unwind main stack */
858 dounwind (-1);
859 }
860
861 SvREFCNT_dec (GvSV (PL_defgv));
862 SvREFCNT_dec (GvAV (PL_defgv));
863 SvREFCNT_dec (GvSV (PL_errgv));
864 SvREFCNT_dec (PL_defoutgv);
865 SvREFCNT_dec (PL_rs);
866 SvREFCNT_dec (GvSV (irsgv));
867
868 SvREFCNT_dec (PL_diehook);
869 SvREFCNT_dec (PL_warnhook);
870
871 SvREFCNT_dec (coro->saved_deffh);
872 SvREFCNT_dec (coro->throw);
873
874 coro_destroy_stacks (aTHX);
875}
876
877static void
545free_coro_mortal () 878free_coro_mortal (pTHX)
546{ 879{
547 if (coro_mortal) 880 if (expect_true (coro_mortal))
548 { 881 {
549 SvREFCNT_dec (coro_mortal); 882 SvREFCNT_dec (coro_mortal);
550 coro_mortal = 0; 883 coro_mortal = 0;
551 } 884 }
552} 885}
553 886
887static int
888runops_trace (pTHX)
889{
890 COP *oldcop = 0;
891 int oldcxix = -2;
892 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
893 coro_cctx *cctx = coro->cctx;
894
895 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
896 {
897 PERL_ASYNC_CHECK ();
898
899 if (cctx->flags & CC_TRACE_ALL)
900 {
901 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
902 {
903 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
904 SV **bot, **top;
905 AV *av = newAV (); /* return values */
906 SV **cb;
907 dSP;
908
909 GV *gv = CvGV (cx->blk_sub.cv);
910 SV *fullname = sv_2mortal (newSV (0));
911 if (isGV (gv))
912 gv_efullname3 (fullname, gv, 0);
913
914 bot = PL_stack_base + cx->blk_oldsp + 1;
915 top = cx->blk_gimme == G_ARRAY ? SP + 1
916 : cx->blk_gimme == G_SCALAR ? bot + 1
917 : bot;
918
919 av_extend (av, top - bot);
920 while (bot < top)
921 av_push (av, SvREFCNT_inc (*bot++));
922
923 PL_runops = RUNOPS_DEFAULT;
924 ENTER;
925 SAVETMPS;
926 EXTEND (SP, 3);
927 PUSHMARK (SP);
928 PUSHs (&PL_sv_no);
929 PUSHs (fullname);
930 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
931 PUTBACK;
932 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
933 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
934 SPAGAIN;
935 FREETMPS;
936 LEAVE;
937 PL_runops = runops_trace;
938 }
939
940 if (oldcop != PL_curcop)
941 {
942 oldcop = PL_curcop;
943
944 if (PL_curcop != &PL_compiling)
945 {
946 SV **cb;
947
948 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
949 {
950 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
951
952 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
953 {
954 runops_proc_t old_runops = PL_runops;
955 dSP;
956 GV *gv = CvGV (cx->blk_sub.cv);
957 SV *fullname = sv_2mortal (newSV (0));
958
959 if (isGV (gv))
960 gv_efullname3 (fullname, gv, 0);
961
962 PL_runops = RUNOPS_DEFAULT;
963 ENTER;
964 SAVETMPS;
965 EXTEND (SP, 3);
966 PUSHMARK (SP);
967 PUSHs (&PL_sv_yes);
968 PUSHs (fullname);
969 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
970 PUTBACK;
971 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
972 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
973 SPAGAIN;
974 FREETMPS;
975 LEAVE;
976 PL_runops = runops_trace;
977 }
978
979 oldcxix = cxstack_ix;
980 }
981
982 if (cctx->flags & CC_TRACE_LINE)
983 {
984 dSP;
985
986 PL_runops = RUNOPS_DEFAULT;
987 ENTER;
988 SAVETMPS;
989 EXTEND (SP, 3);
990 PL_runops = RUNOPS_DEFAULT;
991 PUSHMARK (SP);
992 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
993 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
994 PUTBACK;
995 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
996 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
997 SPAGAIN;
998 FREETMPS;
999 LEAVE;
1000 PL_runops = runops_trace;
1001 }
1002 }
1003 }
1004 }
1005 }
1006
1007 TAINT_NOT;
1008 return 0;
1009}
1010
554/* inject a fake call to Coro::State::_cctx_init into the execution */ 1011/* inject a fake call to Coro::State::_cctx_init into the execution */
1012/* _cctx_init should be careful, as it could be called at almost any time */
1013/* during execution of a perl program */
555static void NOINLINE 1014static void NOINLINE
556prepare_cctx (coro_cctx *cctx) 1015cctx_prepare (pTHX_ coro_cctx *cctx)
557{ 1016{
558 dSP; 1017 dSP;
559 LOGOP myop; 1018 LOGOP myop;
1019
1020 PL_top_env = &PL_start_env;
1021
1022 if (cctx->flags & CC_TRACE)
1023 PL_runops = runops_trace;
560 1024
561 Zero (&myop, 1, LOGOP); 1025 Zero (&myop, 1, LOGOP);
562 myop.op_next = PL_op; 1026 myop.op_next = PL_op;
563 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1027 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
564 1028
… …
570 PL_op = (OP *)&myop; 1034 PL_op = (OP *)&myop;
571 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1035 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
572 SPAGAIN; 1036 SPAGAIN;
573} 1037}
574 1038
1039/*
1040 * this is a _very_ stripped down perl interpreter ;)
1041 */
575static void 1042static void
576coro_run (void *arg) 1043cctx_run (void *arg)
577{ 1044{
1045 dTHX;
1046
578 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1047 /* cctx_run is the alternative tail of transfer(), so unlock here. */
579 UNLOCK; 1048 UNLOCK;
580 1049
581 /* 1050 /* we now skip the entersub that lead to transfer() */
582 * this is a _very_ stripped down perl interpreter ;) 1051 PL_op = PL_op->op_next;
583 */
584 PL_top_env = &PL_start_env;
585 1052
586 /* inject call to cctx_init */ 1053 /* inject a fake subroutine call to cctx_init */
587 prepare_cctx ((coro_cctx *)arg); 1054 cctx_prepare (aTHX_ (coro_cctx *)arg);
588 1055
589 /* somebody will hit me for both perl_run and PL_restartop */ 1056 /* somebody or something will hit me for both perl_run and PL_restartop */
590 PL_restartop = PL_op; 1057 PL_restartop = PL_op;
591 perl_run (PL_curinterp); 1058 perl_run (PL_curinterp);
592 1059
593 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1060 /*
594 abort (); 1061 * If perl-run returns we assume exit() was being called or the coro
1062 * fell off the end, which seems to be the only valid (non-bug)
1063 * reason for perl_run to return. We try to exit by jumping to the
1064 * bootstrap-time "top" top_env, as we cannot restore the "main"
1065 * coroutine as Coro has no such concept
1066 */
1067 PL_top_env = main_top_env;
1068 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
595} 1069}
596 1070
597static coro_cctx * 1071static coro_cctx *
598cctx_new () 1072cctx_new ()
599{ 1073{
600 coro_cctx *cctx; 1074 coro_cctx *cctx;
1075 void *stack_start;
1076 size_t stack_size;
601 1077
602 ++cctx_count; 1078 ++cctx_count;
603 1079
604 Newz (0, cctx, 1, coro_cctx); 1080 Newz (0, cctx, 1, coro_cctx);
605 1081
606#if HAVE_MMAP 1082#if HAVE_MMAP
607
608 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1083 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
609 /* mmap supposedly does allocate-on-write for us */ 1084 /* mmap supposedly does allocate-on-write for us */
610 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1085 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
611 1086
612 if (cctx->sptr == (void *)-1) 1087 if (cctx->sptr != (void *)-1)
613 {
614 perror ("FATAL: unable to mmap stack for coroutine");
615 _exit (EXIT_FAILURE);
616 } 1088 {
617
618# if STACKGUARD 1089# if CORO_STACKGUARD
619 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1090 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
620# endif 1091# endif
1092 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1093 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1094 cctx->flags |= CC_MAPPED;
1095 }
1096 else
1097#endif
1098 {
1099 cctx->ssize = coro_stacksize * (long)sizeof (long);
1100 New (0, cctx->sptr, coro_stacksize, long);
621 1101
622#else
623
624 cctx->ssize = STACKSIZE * (long)sizeof (long);
625 New (0, cctx->sptr, STACKSIZE, long);
626
627 if (!cctx->sptr) 1102 if (!cctx->sptr)
628 { 1103 {
629 perror ("FATAL: unable to malloc stack for coroutine"); 1104 perror ("FATAL: unable to allocate stack for coroutine");
630 _exit (EXIT_FAILURE); 1105 _exit (EXIT_FAILURE);
631 } 1106 }
632 1107
633#endif 1108 stack_start = cctx->sptr;
1109 stack_size = cctx->ssize;
1110 }
634 1111
635#if USE_VALGRIND 1112 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
636 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1113 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
637 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
638 cctx->ssize + (char *)cctx->sptr
639 );
640#endif
641
642 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
643 1114
644 return cctx; 1115 return cctx;
645} 1116}
646 1117
647static void 1118static void
… …
650 if (!cctx) 1121 if (!cctx)
651 return; 1122 return;
652 1123
653 --cctx_count; 1124 --cctx_count;
654 1125
655#if USE_VALGRIND 1126#if CORO_USE_VALGRIND
656 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1127 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
657#endif 1128#endif
658 1129
659#if HAVE_MMAP 1130#if HAVE_MMAP
1131 if (cctx->flags & CC_MAPPED)
660 munmap (cctx->sptr, cctx->ssize); 1132 munmap (cctx->sptr, cctx->ssize);
661#else 1133 else
1134#endif
662 Safefree (cctx->sptr); 1135 Safefree (cctx->sptr);
663#endif
664 1136
665 Safefree (cctx); 1137 Safefree (cctx);
666} 1138}
667 1139
1140/* wether this cctx should be destructed */
1141#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1142
668static coro_cctx * 1143static coro_cctx *
669cctx_get () 1144cctx_get (pTHX)
670{ 1145{
671 coro_cctx *cctx; 1146 while (expect_true (cctx_first))
672
673 if (cctx_first)
674 { 1147 {
675 cctx = cctx_first; 1148 coro_cctx *cctx = cctx_first;
676 cctx_first = cctx->next; 1149 cctx_first = cctx->next;
677 --cctx_idle; 1150 --cctx_idle;
678 } 1151
679 else 1152 if (expect_true (!CCTX_EXPIRED (cctx)))
680 { 1153 return cctx;
681 cctx = cctx_new (); 1154
682 PL_op = PL_op->op_next; 1155 cctx_destroy (cctx);
683 } 1156 }
684 1157
685 return cctx; 1158 return cctx_new ();
686} 1159}
687 1160
688static void 1161static void
689cctx_put (coro_cctx *cctx) 1162cctx_put (coro_cctx *cctx)
690{ 1163{
691 /* free another cctx if overlimit */ 1164 /* free another cctx if overlimit */
692 if (cctx_idle >= MAX_IDLE_CCTX) 1165 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
693 { 1166 {
694 coro_cctx *first = cctx_first; 1167 coro_cctx *first = cctx_first;
695 cctx_first = first->next; 1168 cctx_first = first->next;
696 --cctx_idle; 1169 --cctx_idle;
697 1170
698 assert (!first->inuse);
699 cctx_destroy (first); 1171 cctx_destroy (first);
700 } 1172 }
701 1173
702 ++cctx_idle; 1174 ++cctx_idle;
703 cctx->next = cctx_first; 1175 cctx->next = cctx_first;
704 cctx_first = cctx; 1176 cctx_first = cctx;
705} 1177}
706 1178
707/* never call directly, always through the coro_state_transfer global variable */ 1179/** coroutine switching *****************************************************/
1180
1181static void
1182transfer_check (pTHX_ struct coro *prev, struct coro *next)
1183{
1184 if (expect_true (prev != next))
1185 {
1186 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1187 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1188
1189 if (expect_false (next->flags & CF_RUNNING))
1190 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1191
1192 if (expect_false (next->flags & CF_DESTROYED))
1193 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1194
1195#if !PERL_VERSION_ATLEAST (5,10,0)
1196 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1197 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1198#endif
1199 }
1200}
1201
1202/* always use the TRANSFER macro */
708static void NOINLINE 1203static void NOINLINE
709transfer (struct coro *prev, struct coro *next) 1204transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
710{ 1205{
711 dSTACKLEVEL; 1206 dSTACKLEVEL;
1207 static volatile int has_throw;
712 1208
713 /* sometimes transfer is only called to set idle_sp */ 1209 /* sometimes transfer is only called to set idle_sp */
714 if (!next) 1210 if (expect_false (!next))
715 { 1211 {
716 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1212 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
717 assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ 1213 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
718 } 1214 }
719 else if (prev != next) 1215 else if (expect_true (prev != next))
720 { 1216 {
721 coro_cctx *prev__cctx; 1217 coro_cctx *prev__cctx;
722 1218
723 if (prev->flags & CF_NEW) 1219 if (expect_false (prev->flags & CF_NEW))
724 { 1220 {
725 /* create a new empty context */ 1221 /* create a new empty context */
726 Newz (0, prev->cctx, 1, coro_cctx); 1222 Newz (0, prev->cctx, 1, coro_cctx);
727 prev->cctx->inuse = 1;
728 prev->flags &= ~CF_NEW; 1223 prev->flags &= ~CF_NEW;
729 prev->flags |= CF_RUNNING; 1224 prev->flags |= CF_RUNNING;
730 } 1225 }
731 1226
732 /*TODO: must not croak here */
733 if (!prev->flags & CF_RUNNING)
734 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
735
736 if (next->flags & CF_RUNNING)
737 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
738
739 prev->flags &= ~CF_RUNNING; 1227 prev->flags &= ~CF_RUNNING;
740 next->flags |= CF_RUNNING; 1228 next->flags |= CF_RUNNING;
741 1229
742 LOCK; 1230 LOCK;
743 1231
1232 /* first get rid of the old state */
1233 save_perl (aTHX_ prev);
1234
744 if (next->flags & CF_NEW) 1235 if (expect_false (next->flags & CF_NEW))
745 { 1236 {
746 /* need to start coroutine */ 1237 /* need to start coroutine */
747 next->flags &= ~CF_NEW; 1238 next->flags &= ~CF_NEW;
748 /* first get rid of the old state */
749 save_perl (prev);
750 /* setup coroutine call */ 1239 /* setup coroutine call */
751 setup_coro (next); 1240 coro_setup (aTHX_ next);
752 /* need a new stack */
753 assert (!next->cctx);
754 } 1241 }
755 else 1242 else
756 {
757 /* coroutine already started */
758 save_perl (prev);
759 load_perl (next); 1243 load_perl (aTHX_ next);
760 }
761 1244
762 prev__cctx = prev->cctx; 1245 prev__cctx = prev->cctx;
763 1246
764 /* possibly "free" the cctx */ 1247 /* possibly "free" the cctx */
1248 if (expect_true (
765 if (prev__cctx->idle_sp == STACKLEVEL) 1249 prev__cctx->idle_sp == STACKLEVEL
1250 && !(prev__cctx->flags & CC_TRACE)
1251 && !force_cctx
1252 ))
766 { 1253 {
767 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1254 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
768 assert (PL_top_env == prev__cctx->top_env); 1255 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
769 1256
770 prev->cctx = 0; 1257 prev->cctx = 0;
771 1258
1259 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1260 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1261 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1262 if (!next->cctx)
1263 next->cctx = cctx_get (aTHX);
1264
772 cctx_put (prev__cctx); 1265 cctx_put (prev__cctx);
773 prev__cctx->inuse = 0;
774 } 1266 }
775 1267
1268 ++next->usecount;
1269
776 if (!next->cctx) 1270 if (expect_true (!next->cctx))
777 {
778 next->cctx = cctx_get (); 1271 next->cctx = cctx_get (aTHX);
779 assert (!next->cctx->inuse);
780 next->cctx->inuse = 1;
781 }
782 1272
1273 has_throw = !!next->throw;
1274
783 if (prev__cctx != next->cctx) 1275 if (expect_false (prev__cctx != next->cctx))
784 { 1276 {
785 prev__cctx->top_env = PL_top_env; 1277 prev__cctx->top_env = PL_top_env;
786 PL_top_env = next->cctx->top_env; 1278 PL_top_env = next->cctx->top_env;
787 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1279 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
788 } 1280 }
789 1281
790 free_coro_mortal (); 1282 free_coro_mortal (aTHX);
791
792 UNLOCK; 1283 UNLOCK;
1284
1285 if (expect_false (has_throw))
1286 {
1287 struct coro *coro = SvSTATE (coro_current);
1288
1289 if (coro->throw)
1290 {
1291 SV *exception = coro->throw;
1292 coro->throw = 0;
1293 sv_setsv (ERRSV, exception);
1294 croak (0);
1295 }
1296 }
793 } 1297 }
794} 1298}
795 1299
796struct transfer_args 1300struct transfer_args
797{ 1301{
798 struct coro *prev, *next; 1302 struct coro *prev, *next;
799}; 1303};
800 1304
1305#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
801#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1306#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
802 1307
1308/** high level stuff ********************************************************/
1309
803static void 1310static int
804coro_state_destroy (struct coro *coro) 1311coro_state_destroy (pTHX_ struct coro *coro)
805{ 1312{
806 if (coro->refcnt--) 1313 if (coro->flags & CF_DESTROYED)
807 return; 1314 return 0;
1315
1316 coro->flags |= CF_DESTROYED;
1317
1318 if (coro->flags & CF_READY)
1319 {
1320 /* reduce nready, as destroying a ready coro effectively unreadies it */
1321 /* alternative: look through all ready queues and remove the coro */
1322 LOCK;
1323 --coro_nready;
1324 UNLOCK;
1325 }
1326 else
1327 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
808 1328
809 if (coro->mainstack && coro->mainstack != main_mainstack) 1329 if (coro->mainstack && coro->mainstack != main_mainstack)
810 { 1330 {
811 struct coro temp; 1331 struct coro temp;
812 Zero (&temp, 1, struct coro);
813 temp.save = CORO_SAVE_ALL;
814 1332
815 if (coro->flags & CF_RUNNING) 1333 if (coro->flags & CF_RUNNING)
816 croak ("FATAL: tried to destroy currently running coroutine"); 1334 croak ("FATAL: tried to destroy currently running coroutine");
817 1335
818 save_perl (&temp); 1336 save_perl (aTHX_ &temp);
819 load_perl (coro); 1337 load_perl (aTHX_ coro);
820 1338
821 coro_destroy_stacks (); 1339 coro_destroy (aTHX_ coro);
822 1340
823 load_perl (&temp); /* this will get rid of defsv etc.. */ 1341 load_perl (aTHX_ &temp);
824 1342
825 coro->mainstack = 0; 1343 coro->slot = 0;
826 } 1344 }
827 1345
828 cctx_destroy (coro->cctx); 1346 cctx_destroy (coro->cctx);
829 SvREFCNT_dec (coro->args); 1347 SvREFCNT_dec (coro->args);
830 Safefree (coro); 1348
1349 if (coro->next) coro->next->prev = coro->prev;
1350 if (coro->prev) coro->prev->next = coro->next;
1351 if (coro == coro_first) coro_first = coro->next;
1352
1353 return 1;
831} 1354}
832 1355
833static int 1356static int
834coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1357coro_state_free (pTHX_ SV *sv, MAGIC *mg)
835{ 1358{
836 struct coro *coro = (struct coro *)mg->mg_ptr; 1359 struct coro *coro = (struct coro *)mg->mg_ptr;
837 mg->mg_ptr = 0; 1360 mg->mg_ptr = 0;
838 1361
1362 coro->hv = 0;
1363
1364 if (--coro->refcnt < 0)
1365 {
839 coro_state_destroy (coro); 1366 coro_state_destroy (aTHX_ coro);
1367 Safefree (coro);
1368 }
840 1369
841 return 0; 1370 return 0;
842} 1371}
843 1372
844static int 1373static int
… …
851 return 0; 1380 return 0;
852} 1381}
853 1382
854static MGVTBL coro_state_vtbl = { 1383static MGVTBL coro_state_vtbl = {
855 0, 0, 0, 0, 1384 0, 0, 0, 0,
856 coro_state_clear, 1385 coro_state_free,
857 0, 1386 0,
858#ifdef MGf_DUP 1387#ifdef MGf_DUP
859 coro_state_dup, 1388 coro_state_dup,
860#else 1389#else
861# define MGf_DUP 0 1390# define MGf_DUP 0
862#endif 1391#endif
863}; 1392};
864 1393
865static struct coro *
866SvSTATE (SV *coro)
867{
868 HV *stash;
869 MAGIC *mg;
870
871 if (SvROK (coro))
872 coro = SvRV (coro);
873
874 stash = SvSTASH (coro);
875 if (stash != coro_stash && stash != coro_state_stash)
876 {
877 /* very slow, but rare, check */
878 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
879 croak ("Coro::State object required");
880 }
881
882 mg = SvMAGIC (coro);
883 assert (mg->mg_type == PERL_MAGIC_ext);
884 return (struct coro *)mg->mg_ptr;
885}
886
887static void 1394static void
888prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1395prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
889{ 1396{
890 ta->prev = SvSTATE (prev_sv); 1397 ta->prev = SvSTATE (prev_sv);
891 ta->next = SvSTATE (next_sv); 1398 ta->next = SvSTATE (next_sv);
1399 TRANSFER_CHECK (*ta);
892} 1400}
893 1401
894static void 1402static void
895api_transfer (SV *prev_sv, SV *next_sv) 1403api_transfer (SV *prev_sv, SV *next_sv)
896{ 1404{
1405 dTHX;
897 struct transfer_args ta; 1406 struct transfer_args ta;
898 1407
899 prepare_transfer (&ta, prev_sv, next_sv); 1408 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900 TRANSFER (ta); 1409 TRANSFER (ta, 1);
901}
902
903static int
904api_save (SV *coro_sv, int new_save)
905{
906 struct coro *coro = SvSTATE (coro_sv);
907 int old_save = coro->save;
908
909 if (new_save >= 0)
910 coro->save = new_save;
911
912 return old_save;
913} 1410}
914 1411
915/** Coro ********************************************************************/ 1412/** Coro ********************************************************************/
916 1413
917#define PRIO_MAX 3
918#define PRIO_HIGH 1
919#define PRIO_NORMAL 0
920#define PRIO_LOW -1
921#define PRIO_IDLE -3
922#define PRIO_MIN -4
923
924/* for Coro.pm */
925static SV *coro_current;
926static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
927static int coro_nready;
928
929static void 1414static void
930coro_enq (SV *coro_sv) 1415coro_enq (pTHX_ SV *coro_sv)
931{ 1416{
932 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1417 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
933 coro_nready++;
934} 1418}
935 1419
936static SV * 1420static SV *
937coro_deq (int min_prio) 1421coro_deq (pTHX)
938{ 1422{
939 int prio = PRIO_MAX - PRIO_MIN; 1423 int prio;
940 1424
941 min_prio -= PRIO_MIN;
942 if (min_prio < 0)
943 min_prio = 0;
944
945 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1425 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
946 if (AvFILLp (coro_ready [prio]) >= 0) 1426 if (AvFILLp (coro_ready [prio]) >= 0)
947 {
948 coro_nready--;
949 return av_shift (coro_ready [prio]); 1427 return av_shift (coro_ready [prio]);
950 }
951 1428
952 return 0; 1429 return 0;
953} 1430}
954 1431
955static int 1432static int
956api_ready (SV *coro_sv) 1433api_ready (SV *coro_sv)
957{ 1434{
1435 dTHX;
958 struct coro *coro; 1436 struct coro *coro;
1437 SV *sv_hook;
1438 void (*xs_hook)(void);
959 1439
960 if (SvROK (coro_sv)) 1440 if (SvROK (coro_sv))
961 coro_sv = SvRV (coro_sv); 1441 coro_sv = SvRV (coro_sv);
962 1442
963 coro = SvSTATE (coro_sv); 1443 coro = SvSTATE (coro_sv);
964 1444
965 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
966 return 0; 1446 return 0;
967 1447
968#if 0 /* this is actually harmless */
969 if (coro->flags & CF_RUNNING)
970 croak ("Coro::ready called on currently running coroutine");
971#endif
972
973 coro->flags |= CF_READY; 1448 coro->flags |= CF_READY;
974 1449
975 LOCK; 1450 LOCK;
1451
1452 sv_hook = coro_nready ? 0 : coro_readyhook;
1453 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1454
976 coro_enq (SvREFCNT_inc (coro_sv)); 1455 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1456 ++coro_nready;
1457
977 UNLOCK; 1458 UNLOCK;
1459
1460 if (sv_hook)
1461 {
1462 dSP;
1463
1464 ENTER;
1465 SAVETMPS;
1466
1467 PUSHMARK (SP);
1468 PUTBACK;
1469 call_sv (sv_hook, G_DISCARD);
1470 SPAGAIN;
1471
1472 FREETMPS;
1473 LEAVE;
1474 }
1475
1476 if (xs_hook)
1477 xs_hook ();
978 1478
979 return 1; 1479 return 1;
980} 1480}
981 1481
982static int 1482static int
983api_is_ready (SV *coro_sv) 1483api_is_ready (SV *coro_sv)
984{ 1484{
1485 dTHX;
985 return !!SvSTATE (coro_sv)->flags & CF_READY; 1486 return !!(SvSTATE (coro_sv)->flags & CF_READY);
986} 1487}
987 1488
988static void 1489static void
989prepare_schedule (struct transfer_args *ta) 1490prepare_schedule (pTHX_ struct transfer_args *ta)
990{ 1491{
991 SV *prev, *next; 1492 SV *prev_sv, *next_sv;
992 1493
993 for (;;) 1494 for (;;)
994 { 1495 {
995 LOCK; 1496 LOCK;
996 next = coro_deq (PRIO_MIN); 1497 next_sv = coro_deq (aTHX);
1498
1499 /* nothing to schedule: call the idle handler */
1500 if (expect_false (!next_sv))
1501 {
1502 dSP;
1503 UNLOCK;
1504
1505 ENTER;
1506 SAVETMPS;
1507
1508 PUSHMARK (SP);
1509 PUTBACK;
1510 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1511 SPAGAIN;
1512
1513 FREETMPS;
1514 LEAVE;
1515 continue;
1516 }
1517
1518 ta->next = SvSTATE (next_sv);
1519
1520 /* cannot transfer to destroyed coros, skip and look for next */
1521 if (expect_false (ta->next->flags & CF_DESTROYED))
1522 {
1523 UNLOCK;
1524 SvREFCNT_dec (next_sv);
1525 /* coro_nready is already taken care of by destroy */
1526 continue;
1527 }
1528
1529 --coro_nready;
997 UNLOCK; 1530 UNLOCK;
998
999 if (next)
1000 break; 1531 break;
1001
1002 {
1003 dSP;
1004
1005 ENTER;
1006 SAVETMPS;
1007
1008 PUSHMARK (SP);
1009 PUTBACK;
1010 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1011
1012 FREETMPS;
1013 LEAVE;
1014 } 1532 }
1015 }
1016
1017 prev = SvRV (coro_current);
1018 SvRV_set (coro_current, next);
1019 1533
1020 /* free this only after the transfer */ 1534 /* free this only after the transfer */
1021 LOCK; 1535 prev_sv = SvRV (coro_current);
1022 free_coro_mortal ();
1023 UNLOCK;
1024 coro_mortal = prev;
1025
1026 assert (!SvROK(prev));//D
1027 assert (!SvROK(next));//D
1028
1029 ta->prev = SvSTATE (prev); 1536 ta->prev = SvSTATE (prev_sv);
1030 ta->next = SvSTATE (next); 1537 TRANSFER_CHECK (*ta);
1031
1032 assert (ta->next->flags & CF_READY); 1538 assert (ta->next->flags & CF_READY);
1033 ta->next->flags &= ~CF_READY; 1539 ta->next->flags &= ~CF_READY;
1540 SvRV_set (coro_current, next_sv);
1541
1542 LOCK;
1543 free_coro_mortal (aTHX);
1544 coro_mortal = prev_sv;
1545 UNLOCK;
1034} 1546}
1035 1547
1036static void 1548static void
1037prepare_cede (struct transfer_args *ta) 1549prepare_cede (pTHX_ struct transfer_args *ta)
1038{ 1550{
1039 api_ready (coro_current); 1551 api_ready (coro_current);
1040
1041 prepare_schedule (ta); 1552 prepare_schedule (aTHX_ ta);
1553}
1554
1555static int
1556prepare_cede_notself (pTHX_ struct transfer_args *ta)
1557{
1558 if (coro_nready)
1559 {
1560 SV *prev = SvRV (coro_current);
1561 prepare_schedule (aTHX_ ta);
1562 api_ready (prev);
1563 return 1;
1564 }
1565 else
1566 return 0;
1042} 1567}
1043 1568
1044static void 1569static void
1045api_schedule (void) 1570api_schedule (void)
1046{ 1571{
1572 dTHX;
1047 struct transfer_args ta; 1573 struct transfer_args ta;
1048 1574
1049 prepare_schedule (&ta); 1575 prepare_schedule (aTHX_ &ta);
1050 TRANSFER (ta); 1576 TRANSFER (ta, 1);
1577}
1578
1579static int
1580api_cede (void)
1581{
1582 dTHX;
1583 struct transfer_args ta;
1584
1585 prepare_cede (aTHX_ &ta);
1586
1587 if (expect_true (ta.prev != ta.next))
1588 {
1589 TRANSFER (ta, 1);
1590 return 1;
1591 }
1592 else
1593 return 0;
1594}
1595
1596static int
1597api_cede_notself (void)
1598{
1599 dTHX;
1600 struct transfer_args ta;
1601
1602 if (prepare_cede_notself (aTHX_ &ta))
1603 {
1604 TRANSFER (ta, 1);
1605 return 1;
1606 }
1607 else
1608 return 0;
1051} 1609}
1052 1610
1053static void 1611static void
1054api_cede (void) 1612api_trace (SV *coro_sv, int flags)
1055{ 1613{
1056 struct transfer_args ta; 1614 dTHX;
1615 struct coro *coro = SvSTATE (coro_sv);
1057 1616
1058 prepare_cede (&ta); 1617 if (flags & CC_TRACE)
1059 TRANSFER (ta); 1618 {
1060} 1619 if (!coro->cctx)
1620 coro->cctx = cctx_new ();
1621 else if (!(coro->cctx->flags & CC_TRACE))
1622 croak ("cannot enable tracing on coroutine with custom stack");
1061 1623
1624 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1625 }
1626 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1627 {
1628 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1629
1630 if (coro->flags & CF_RUNNING)
1631 PL_runops = RUNOPS_DEFAULT;
1632 else
1633 coro->slot->runops = RUNOPS_DEFAULT;
1634 }
1635}
1636
1637static int
1638coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1639{
1640 AV *padlist;
1641 AV *av = (AV *)mg->mg_obj;
1642
1643 abort ();
1644
1645 return 0;
1646}
1647
1648static MGVTBL coro_gensub_vtbl = {
1649 0, 0, 0, 0,
1650 coro_gensub_free
1651};
1652
1653/*****************************************************************************/
1654/* PerlIO::cede */
1655
1656typedef struct
1657{
1658 PerlIOBuf base;
1659 NV next, every;
1660} PerlIOCede;
1661
1662static IV
1663PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1664{
1665 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1666
1667 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1668 self->next = nvtime () + self->every;
1669
1670 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1671}
1672
1673static SV *
1674PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1675{
1676 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1677
1678 return newSVnv (self->every);
1679}
1680
1681static IV
1682PerlIOCede_flush (pTHX_ PerlIO *f)
1683{
1684 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1685 double now = nvtime ();
1686
1687 if (now >= self->next)
1688 {
1689 api_cede ();
1690 self->next = now + self->every;
1691 }
1692
1693 return PerlIOBuf_flush (f);
1694}
1695
1696static PerlIO_funcs PerlIO_cede =
1697{
1698 sizeof(PerlIO_funcs),
1699 "cede",
1700 sizeof(PerlIOCede),
1701 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1702 PerlIOCede_pushed,
1703 PerlIOBuf_popped,
1704 PerlIOBuf_open,
1705 PerlIOBase_binmode,
1706 PerlIOCede_getarg,
1707 PerlIOBase_fileno,
1708 PerlIOBuf_dup,
1709 PerlIOBuf_read,
1710 PerlIOBuf_unread,
1711 PerlIOBuf_write,
1712 PerlIOBuf_seek,
1713 PerlIOBuf_tell,
1714 PerlIOBuf_close,
1715 PerlIOCede_flush,
1716 PerlIOBuf_fill,
1717 PerlIOBase_eof,
1718 PerlIOBase_error,
1719 PerlIOBase_clearerr,
1720 PerlIOBase_setlinebuf,
1721 PerlIOBuf_get_base,
1722 PerlIOBuf_bufsiz,
1723 PerlIOBuf_get_ptr,
1724 PerlIOBuf_get_cnt,
1725 PerlIOBuf_set_ptrcnt,
1726};
1727
1728
1062MODULE = Coro::State PACKAGE = Coro::State 1729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1063 1730
1064PROTOTYPES: DISABLE 1731PROTOTYPES: DISABLE
1065 1732
1066BOOT: 1733BOOT:
1067{ 1734{
1068#ifdef USE_ITHREADS 1735#ifdef USE_ITHREADS
1069 MUTEX_INIT (&coro_mutex); 1736 MUTEX_INIT (&coro_mutex);
1070#endif 1737#endif
1071 BOOT_PAGESIZE; 1738 BOOT_PAGESIZE;
1072 1739
1740 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1741 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1742
1743 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1744 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1745 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1746
1747 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1748 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1749 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1750
1073 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1751 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1074 1752
1753 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1754 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1075 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1755 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1076 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1077 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1078 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1079 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1756 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1080 1757
1081 main_mainstack = PL_mainstack; 1758 main_mainstack = PL_mainstack;
1759 main_top_env = PL_top_env;
1082 1760
1761 while (main_top_env->je_prev)
1762 main_top_env = main_top_env->je_prev;
1763
1083 coroapi.ver = CORO_API_VERSION; 1764 coroapi.ver = CORO_API_VERSION;
1765 coroapi.rev = CORO_API_REVISION;
1084 coroapi.transfer = api_transfer; 1766 coroapi.transfer = api_transfer;
1767
1768 {
1769 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1770
1771 if (!svp) croak ("Time::HiRes is required");
1772 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1773
1774 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1775 }
1085 1776
1086 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1777 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1087} 1778}
1088 1779
1089SV * 1780SV *
1090new (char *klass, ...) 1781new (char *klass, ...)
1091 CODE: 1782 CODE:
1092{ 1783{
1093 struct coro *coro; 1784 struct coro *coro;
1785 MAGIC *mg;
1094 HV *hv; 1786 HV *hv;
1095 int i; 1787 int i;
1096 1788
1097 Newz (0, coro, 1, struct coro); 1789 Newz (0, coro, 1, struct coro);
1098 coro->args = newAV (); 1790 coro->args = newAV ();
1099 coro->save = CORO_SAVE_ALL;
1100 coro->flags = CF_NEW; 1791 coro->flags = CF_NEW;
1101 1792
1793 if (coro_first) coro_first->prev = coro;
1794 coro->next = coro_first;
1795 coro_first = coro;
1796
1102 hv = newHV (); 1797 coro->hv = hv = newHV ();
1103 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1798 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1799 mg->mg_flags |= MGf_DUP;
1104 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1800 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1105 1801
1802 av_extend (coro->args, items - 1);
1106 for (i = 1; i < items; i++) 1803 for (i = 1; i < items; i++)
1107 av_push (coro->args, newSVsv (ST (i))); 1804 av_push (coro->args, newSVsv (ST (i)));
1108} 1805}
1109 OUTPUT: 1806 OUTPUT:
1110 RETVAL 1807 RETVAL
1111 1808
1112int 1809# these not obviously related functions are all rolled into the same xs
1113save (SV *coro, int new_save = -1) 1810# function to increase chances that they all will call transfer with the same
1114 CODE: 1811# stack offset
1115 RETVAL = api_save (coro, new_save);
1116 OUTPUT:
1117 RETVAL
1118
1119void 1812void
1120_set_stacklevel (...) 1813_set_stacklevel (...)
1121 ALIAS: 1814 ALIAS:
1122 Coro::State::transfer = 1 1815 Coro::State::transfer = 1
1123 Coro::schedule = 2 1816 Coro::schedule = 2
1124 Coro::cede = 3 1817 Coro::cede = 3
1818 Coro::cede_notself = 4
1125 CODE: 1819 CODE:
1126{ 1820{
1127 struct transfer_args ta; 1821 struct transfer_args ta;
1128 1822
1823 PUTBACK;
1129 switch (ix) 1824 switch (ix)
1130 { 1825 {
1131 case 0: 1826 case 0:
1132 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1827 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1133 ta.next = 0; 1828 ta.next = 0;
… …
1135 1830
1136 case 1: 1831 case 1:
1137 if (items != 2) 1832 if (items != 2)
1138 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1833 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1139 1834
1140 prepare_transfer (&ta, ST (0), ST (1)); 1835 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1141 break; 1836 break;
1142 1837
1143 case 2: 1838 case 2:
1144 prepare_schedule (&ta); 1839 prepare_schedule (aTHX_ &ta);
1145 break; 1840 break;
1146 1841
1147 case 3: 1842 case 3:
1148 prepare_cede (&ta); 1843 prepare_cede (aTHX_ &ta);
1844 break;
1845
1846 case 4:
1847 if (!prepare_cede_notself (aTHX_ &ta))
1848 XSRETURN_EMPTY;
1849
1149 break; 1850 break;
1150 } 1851 }
1852 SPAGAIN;
1151 1853
1854 BARRIER;
1855 PUTBACK;
1152 TRANSFER (ta); 1856 TRANSFER (ta, 0);
1857 SPAGAIN; /* might be the sp of a different coroutine now */
1858 /* be extra careful not to ever do anything after TRANSFER */
1153} 1859}
1860
1861bool
1862_destroy (SV *coro_sv)
1863 CODE:
1864 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1865 OUTPUT:
1866 RETVAL
1154 1867
1155void 1868void
1156_clone_state_from (SV *dst, SV *src)
1157 CODE:
1158{
1159 struct coro *coro_src = SvSTATE (src);
1160
1161 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1162
1163 ++coro_src->refcnt;
1164 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1165}
1166
1167void
1168_exit (code) 1869_exit (int code)
1169 int code
1170 PROTOTYPE: $ 1870 PROTOTYPE: $
1171 CODE: 1871 CODE:
1172 _exit (code); 1872 _exit (code);
1873
1874int
1875cctx_stacksize (int new_stacksize = 0)
1876 CODE:
1877 RETVAL = coro_stacksize;
1878 if (new_stacksize)
1879 coro_stacksize = new_stacksize;
1880 OUTPUT:
1881 RETVAL
1173 1882
1174int 1883int
1175cctx_count () 1884cctx_count ()
1176 CODE: 1885 CODE:
1177 RETVAL = cctx_count; 1886 RETVAL = cctx_count;
… …
1183 CODE: 1892 CODE:
1184 RETVAL = cctx_idle; 1893 RETVAL = cctx_idle;
1185 OUTPUT: 1894 OUTPUT:
1186 RETVAL 1895 RETVAL
1187 1896
1897void
1898list ()
1899 PPCODE:
1900{
1901 struct coro *coro;
1902 for (coro = coro_first; coro; coro = coro->next)
1903 if (coro->hv)
1904 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1905}
1906
1907void
1908call (Coro::State coro, SV *coderef)
1909 ALIAS:
1910 eval = 1
1911 CODE:
1912{
1913 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1914 {
1915 struct coro temp;
1916
1917 if (!(coro->flags & CF_RUNNING))
1918 {
1919 PUTBACK;
1920 save_perl (aTHX_ &temp);
1921 load_perl (aTHX_ coro);
1922 }
1923
1924 {
1925 dSP;
1926 ENTER;
1927 SAVETMPS;
1928 PUTBACK;
1929 PUSHSTACK;
1930 PUSHMARK (SP);
1931
1932 if (ix)
1933 eval_sv (coderef, 0);
1934 else
1935 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1936
1937 POPSTACK;
1938 SPAGAIN;
1939 FREETMPS;
1940 LEAVE;
1941 PUTBACK;
1942 }
1943
1944 if (!(coro->flags & CF_RUNNING))
1945 {
1946 save_perl (aTHX_ coro);
1947 load_perl (aTHX_ &temp);
1948 SPAGAIN;
1949 }
1950 }
1951}
1952
1953SV *
1954is_ready (Coro::State coro)
1955 PROTOTYPE: $
1956 ALIAS:
1957 is_ready = CF_READY
1958 is_running = CF_RUNNING
1959 is_new = CF_NEW
1960 is_destroyed = CF_DESTROYED
1961 CODE:
1962 RETVAL = boolSV (coro->flags & ix);
1963 OUTPUT:
1964 RETVAL
1965
1966void
1967api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1968
1969SV *
1970has_cctx (Coro::State coro)
1971 PROTOTYPE: $
1972 CODE:
1973 RETVAL = boolSV (!!coro->cctx);
1974 OUTPUT:
1975 RETVAL
1976
1977int
1978is_traced (Coro::State coro)
1979 PROTOTYPE: $
1980 CODE:
1981 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1982 OUTPUT:
1983 RETVAL
1984
1985IV
1986rss (Coro::State coro)
1987 PROTOTYPE: $
1988 ALIAS:
1989 usecount = 1
1990 CODE:
1991 switch (ix)
1992 {
1993 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1994 case 1: RETVAL = coro->usecount; break;
1995 }
1996 OUTPUT:
1997 RETVAL
1998
1999void
2000force_cctx ()
2001 CODE:
2002 struct coro *coro = SvSTATE (coro_current);
2003 coro->cctx->idle_sp = 0;
2004
2005void
2006throw (Coro::State self, SV *throw = &PL_sv_undef)
2007 PROTOTYPE: $;$
2008 CODE:
2009 SvREFCNT_dec (self->throw);
2010 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2011
2012void
2013swap_defsv (Coro::State self)
2014 PROTOTYPE: $
2015 ALIAS:
2016 swap_defav = 1
2017 CODE:
2018 if (!self->slot)
2019 croak ("cannot swap state with coroutine that has no saved state");
2020 else
2021 {
2022 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2023 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2024
2025 SV *tmp = *src; *src = *dst; *dst = tmp;
2026 }
2027
1188MODULE = Coro::State PACKAGE = Coro 2028MODULE = Coro::State PACKAGE = Coro
1189 2029
1190BOOT: 2030BOOT:
1191{ 2031{
1192 int i; 2032 int i;
1193 2033
2034 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2035 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2036 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2037
2038 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2039 SvREADONLY_on (coro_current);
2040
1194 coro_stash = gv_stashpv ("Coro", TRUE); 2041 coro_stash = gv_stashpv ("Coro", TRUE);
1195 2042
1196 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2043 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1197 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2044 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1198 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2045 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1199 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2046 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1200 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2047 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1201 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2048 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1202 2049
1203 coro_current = get_sv ("Coro::current", FALSE);
1204 SvREADONLY_on (coro_current);
1205
1206 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2050 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1207 coro_ready[i] = newAV (); 2051 coro_ready[i] = newAV ();
1208 2052
1209 { 2053 {
1210 SV *sv = perl_get_sv("Coro::API", 1); 2054 SV *sv = perl_get_sv ("Coro::API", TRUE);
2055 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1211 2056
1212 coroapi.schedule = api_schedule; 2057 coroapi.schedule = api_schedule;
1213 coroapi.save = api_save;
1214 coroapi.cede = api_cede; 2058 coroapi.cede = api_cede;
2059 coroapi.cede_notself = api_cede_notself;
1215 coroapi.ready = api_ready; 2060 coroapi.ready = api_ready;
1216 coroapi.is_ready = api_is_ready; 2061 coroapi.is_ready = api_is_ready;
1217 coroapi.nready = &coro_nready; 2062 coroapi.nready = &coro_nready;
1218 coroapi.current = coro_current; 2063 coroapi.current = coro_current;
1219 2064
1220 GCoroAPI = &coroapi; 2065 GCoroAPI = &coroapi;
1221 sv_setiv (sv, (IV)&coroapi); 2066 sv_setiv (sv, (IV)&coroapi);
1222 SvREADONLY_on (sv); 2067 SvREADONLY_on (sv);
1223 } 2068 }
… …
1228 PROTOTYPE: $ 2073 PROTOTYPE: $
1229 CODE: 2074 CODE:
1230 SvREFCNT_dec (SvRV (coro_current)); 2075 SvREFCNT_dec (SvRV (coro_current));
1231 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2076 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1232 2077
2078void
2079_set_readyhook (SV *hook)
2080 PROTOTYPE: $
2081 CODE:
2082 LOCK;
2083 SvREFCNT_dec (coro_readyhook);
2084 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2085 UNLOCK;
2086
1233int 2087int
1234prio (Coro::State coro, int newprio = 0) 2088prio (Coro::State coro, int newprio = 0)
1235 ALIAS: 2089 ALIAS:
1236 nice = 1 2090 nice = 1
1237 CODE: 2091 CODE:
… …
1239 RETVAL = coro->prio; 2093 RETVAL = coro->prio;
1240 2094
1241 if (items > 1) 2095 if (items > 1)
1242 { 2096 {
1243 if (ix) 2097 if (ix)
1244 newprio += coro->prio; 2098 newprio = coro->prio - newprio;
1245 2099
1246 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2100 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1247 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2101 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1248 2102
1249 coro->prio = newprio; 2103 coro->prio = newprio;
1250 } 2104 }
1251} 2105}
2106 OUTPUT:
2107 RETVAL
1252 2108
1253SV * 2109SV *
1254ready (SV *self) 2110ready (SV *self)
1255 PROTOTYPE: $ 2111 PROTOTYPE: $
1256 CODE: 2112 CODE:
1257 RETVAL = boolSV (api_ready (self)); 2113 RETVAL = boolSV (api_ready (self));
1258 OUTPUT: 2114 OUTPUT:
1259 RETVAL 2115 RETVAL
1260 2116
1261SV *
1262is_ready (SV *self)
1263 PROTOTYPE: $
1264 CODE:
1265 RETVAL = boolSV (api_is_ready (self));
1266 OUTPUT:
1267 RETVAL
1268
1269int 2117int
1270nready (...) 2118nready (...)
1271 PROTOTYPE: 2119 PROTOTYPE:
1272 CODE: 2120 CODE:
1273 RETVAL = coro_nready; 2121 RETVAL = coro_nready;
1274 OUTPUT: 2122 OUTPUT:
1275 RETVAL 2123 RETVAL
1276 2124
2125# for async_pool speedup
2126void
2127_pool_1 (SV *cb)
2128 CODE:
2129{
2130 struct coro *coro = SvSTATE (coro_current);
2131 HV *hv = (HV *)SvRV (coro_current);
2132 AV *defav = GvAV (PL_defgv);
2133 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2134 AV *invoke_av;
2135 int i, len;
2136
2137 if (!invoke)
2138 {
2139 SV *old = PL_diehook;
2140 PL_diehook = 0;
2141 SvREFCNT_dec (old);
2142 croak ("\3async_pool terminate\2\n");
2143 }
2144
2145 SvREFCNT_dec (coro->saved_deffh);
2146 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2147
2148 hv_store (hv, "desc", sizeof ("desc") - 1,
2149 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2150
2151 invoke_av = (AV *)SvRV (invoke);
2152 len = av_len (invoke_av);
2153
2154 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2155
2156 if (len > 0)
2157 {
2158 av_fill (defav, len - 1);
2159 for (i = 0; i < len; ++i)
2160 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2161 }
2162
2163 SvREFCNT_dec (invoke);
2164}
2165
2166void
2167_pool_2 (SV *cb)
2168 CODE:
2169{
2170 struct coro *coro = SvSTATE (coro_current);
2171
2172 sv_setsv (cb, &PL_sv_undef);
2173
2174 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2175 coro->saved_deffh = 0;
2176
2177 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2178 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2179 {
2180 SV *old = PL_diehook;
2181 PL_diehook = 0;
2182 SvREFCNT_dec (old);
2183 croak ("\3async_pool terminate\2\n");
2184 }
2185
2186 av_clear (GvAV (PL_defgv));
2187 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2188 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2189
2190 coro->prio = 0;
2191
2192 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2193 api_trace (coro_current, 0);
2194
2195 av_push (av_async_pool, newSVsv (coro_current));
2196}
2197
2198#if 0
2199
2200void
2201_generator_call (...)
2202 PROTOTYPE: @
2203 PPCODE:
2204 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2205 xxxx
2206 abort ();
2207
2208SV *
2209gensub (SV *sub, ...)
2210 PROTOTYPE: &;@
2211 CODE:
2212{
2213 struct coro *coro;
2214 MAGIC *mg;
2215 CV *xcv;
2216 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2217 int i;
2218
2219 CvGV (ncv) = CvGV (cv);
2220 CvFILE (ncv) = CvFILE (cv);
2221
2222 Newz (0, coro, 1, struct coro);
2223 coro->args = newAV ();
2224 coro->flags = CF_NEW;
2225
2226 av_extend (coro->args, items - 1);
2227 for (i = 1; i < items; i++)
2228 av_push (coro->args, newSVsv (ST (i)));
2229
2230 CvISXSUB_on (ncv);
2231 CvXSUBANY (ncv).any_ptr = (void *)coro;
2232
2233 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2234
2235 CvXSUB (ncv) = CvXSUB (xcv);
2236 CvANON_on (ncv);
2237
2238 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2239 RETVAL = newRV_noinc ((SV *)ncv);
2240}
2241 OUTPUT:
2242 RETVAL
2243
2244#endif
2245
2246
1277MODULE = Coro::State PACKAGE = Coro::AIO 2247MODULE = Coro::State PACKAGE = Coro::AIO
1278 2248
1279SV * 2249SV *
1280_get_state () 2250_get_state ()
1281 CODE: 2251 CODE:
… …
1306 PL_laststype = data->laststype; 2276 PL_laststype = data->laststype;
1307 PL_laststatval = data->laststatval; 2277 PL_laststatval = data->laststatval;
1308 PL_statcache = data->statcache; 2278 PL_statcache = data->statcache;
1309} 2279}
1310 2280
2281
2282MODULE = Coro::State PACKAGE = Coro::AnyEvent
2283
2284BOOT:
2285 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2286
2287SV *
2288_schedule (...)
2289 PROTOTYPE: @
2290 CODE:
2291{
2292 static int incede;
2293
2294 api_cede_notself ();
2295
2296 ++incede;
2297 while (coro_nready >= incede && api_cede ())
2298 ;
2299
2300 sv_setsv (sv_activity, &PL_sv_undef);
2301 if (coro_nready >= incede)
2302 {
2303 PUSHMARK (SP);
2304 PUTBACK;
2305 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2306 SPAGAIN;
2307 }
2308
2309 --incede;
2310}
2311
2312
2313MODULE = Coro::State PACKAGE = PerlIO::cede
2314
2315BOOT:
2316 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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