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Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.245 by root, Mon Sep 22 05:40:21 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"
6 9
7#include "patchlevel.h" 10#include "patchlevel.h"
8 11
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#include <stdio.h> 12#include <stdio.h>
44#include <errno.h> 13#include <errno.h>
14#include <assert.h>
45 15
46#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 16#ifdef WIN32
47# undef STACKGUARD 17# undef setjmp
48#endif 18# undef longjmp
49 19# undef _exit
50#ifndef STACKGUARD 20# define setjmp _setjmp // deep magic, don't ask
51# define STACKGUARD 0 21#else
22# include <inttypes.h> /* most portable stdint.h */
52#endif 23#endif
53 24
54#ifdef HAVE_MMAP 25#ifdef HAVE_MMAP
55# include <unistd.h> 26# include <unistd.h>
56# include <sys/mman.h> 27# include <sys/mman.h>
… …
72#else 43#else
73# define PAGESIZE 0 44# define PAGESIZE 0
74# define BOOT_PAGESIZE (void)0 45# define BOOT_PAGESIZE (void)0
75#endif 46#endif
76 47
77/* The next macro should declare a variable stacklevel that contains and approximation 48#if CORO_USE_VALGRIND
78 * to the current C stack pointer. Its property is that it changes with each call 49# include <valgrind/valgrind.h>
79 * and should be unique. */ 50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif
54
55/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8
57
58#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.8.8 */
86#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0
88#endif
89#ifndef newSV
90# define newSV(l) NEWSV(0,l)
91#endif
92
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */
99#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v)
101#endif
102
103#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
104# undef CORO_STACKGUARD
105#endif
106
107#ifndef CORO_STACKGUARD
108# define CORO_STACKGUARD 0
109#endif
110
111/* prefer perl internal functions over our own? */
112#ifndef CORO_PREFER_PERL_FUNCTIONS
113# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif
115
116/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */
80#define dSTACKLEVEL int stacklevel 118#define dSTACKLEVEL volatile char stacklevel
81#define STACKLEVEL ((void *)&stacklevel) 119#define STACKLEVEL ((void *)&stacklevel)
82 120
83#define IN_DESTRUCT (PL_main_cv == Nullcv) 121#define IN_DESTRUCT (PL_main_cv == Nullcv)
84 122
85#if __GNUC__ >= 3 123#if __GNUC__ >= 3
86# define attribute(x) __attribute__(x) 124# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value))
87#else 127#else
88# define attribute(x) 128# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr)
89#endif 131#endif
132
133#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1)
90 135
91#define NOINLINE attribute ((noinline)) 136#define NOINLINE attribute ((noinline))
92 137
93#include "CoroAPI.h" 138#include "CoroAPI.h"
94
95#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96 139
97#ifdef USE_ITHREADS 140#ifdef USE_ITHREADS
98static perl_mutex coro_mutex; 141static perl_mutex coro_mutex;
99# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101#else 144#else
102# define LOCK (void)0 145# define LOCK (void)0
103# define UNLOCK (void)0 146# define UNLOCK (void)0
104#endif 147#endif
105 148
149/* helper storage struct for Coro::AIO */
106struct io_state 150struct io_state
107{ 151{
108 int errorno; 152 int errorno;
109 I32 laststype; 153 I32 laststype;
110 int laststatval; 154 int laststatval;
111 Stat_t statcache; 155 Stat_t statcache;
112}; 156};
113 157
158static size_t coro_stacksize = CORO_STACKSIZE;
114static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
115static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env;
116static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
117static SV *coro_mortal; /* will be freed after next transfer */ 163static volatile SV *coro_mortal; /* will be freed after next transfer */
164
165static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook;
168static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
170
171/* async_pool helper stuff */
172static SV *sv_pool_rss;
173static SV *sv_pool_size;
174static AV *av_async_pool;
175
176/* Coro::AnyEvent */
177static SV *sv_activity;
118 178
119static struct coro_cctx *cctx_first; 179static struct coro_cctx *cctx_first;
120static int cctx_count, cctx_idle; 180static int cctx_count, cctx_idle;
181
182enum {
183 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189};
121 190
122/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
123typedef struct coro_cctx { 192typedef struct coro_cctx {
124 struct coro_cctx *next; 193 struct coro_cctx *next;
125 194
126 /* the stack */ 195 /* the stack */
127 void *sptr; 196 void *sptr;
128 long ssize; /* positive == mmap, otherwise malloc */ 197 size_t ssize;
129 198
130 /* cpu state */ 199 /* cpu state */
131 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
132 JMPENV *top_env; 202 JMPENV *top_env;
133 coro_context cctx; 203 coro_context cctx;
134 204
135 int inuse;
136
137#if USE_VALGRIND 205#if CORO_USE_VALGRIND
138 int valgrind_id; 206 int valgrind_id;
139#endif 207#endif
208 unsigned char flags;
140} coro_cctx; 209} coro_cctx;
141 210
142enum { 211enum {
143 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
144 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
145 CF_NEW = 0x0004, /* ahs never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
146}; 216};
217
218/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct {
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name;
225# include "state.h"
226#undef VAR
227} perl_slots;
228
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
147 230
148/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
149struct coro { 232struct coro {
150 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the c coroutine allocated to this perl coroutine, if any */
151 coro_cctx *cctx; 234 coro_cctx *cctx;
152 235
236 /* process data */
237 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */
239
153 /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
154 AV *args; 241 int refcnt; /* coroutines are refcounted, yes */
155 int refcnt; 242 int flags; /* CF_ flags */
156 int flags; 243 HV *hv; /* the perl hash associated with this coro, if any */
157 244
158 /* optionally saved, might be zero */ 245 /* statistics */
159 AV *defav; 246 int usecount; /* number of transfers to this coro */
160 SV *defsv;
161 SV *errsv;
162
163#define VAR(name,type) type name;
164# include "state.h"
165#undef VAR
166 247
167 /* coro process data */ 248 /* coro process data */
168 int prio; 249 int prio;
250 SV *throw; /* exception to be thrown */
251
252 /* async_pool */
253 SV *saved_deffh;
254
255 /* linked list */
256 struct coro *next, *prev;
169}; 257};
170 258
171typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
172typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
173 261
262/** Coro ********************************************************************/
263
264#define PRIO_MAX 3
265#define PRIO_HIGH 1
266#define PRIO_NORMAL 0
267#define PRIO_LOW -1
268#define PRIO_IDLE -3
269#define PRIO_MIN -4
270
271/* for Coro.pm */
272static SV *coro_current;
273static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
275static int coro_nready;
276static struct coro *coro_first;
277
278/** lowlevel stuff **********************************************************/
279
280static SV *
281coro_get_sv (pTHX_ const char *name, int create)
282{
283#if PERL_VERSION_ATLEAST (5,10,0)
284 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
285 get_sv (name, create);
286#endif
287 return get_sv (name, create);
288}
289
174static AV * 290static AV *
291coro_get_av (pTHX_ const char *name, int create)
292{
293#if PERL_VERSION_ATLEAST (5,10,0)
294 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
295 get_av (name, create);
296#endif
297 return get_av (name, create);
298}
299
300static HV *
301coro_get_hv (pTHX_ const char *name, int create)
302{
303#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_hv (name, create);
306#endif
307 return get_hv (name, create);
308}
309
310static AV *
175coro_clone_padlist (CV *cv) 311coro_clone_padlist (pTHX_ CV *cv)
176{ 312{
177 AV *padlist = CvPADLIST (cv); 313 AV *padlist = CvPADLIST (cv);
178 AV *newpadlist, *newpad; 314 AV *newpadlist, *newpad;
179 315
180 newpadlist = newAV (); 316 newpadlist = newAV ();
181 AvREAL_off (newpadlist); 317 AvREAL_off (newpadlist);
182#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
183 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 319 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
184#else 320#else
185 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
186#endif 322#endif
187 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
… …
192 328
193 return newpadlist; 329 return newpadlist;
194} 330}
195 331
196static void 332static void
197free_padlist (AV *padlist) 333free_padlist (pTHX_ AV *padlist)
198{ 334{
199 /* may be during global destruction */ 335 /* may be during global destruction */
200 if (SvREFCNT (padlist)) 336 if (SvREFCNT (padlist))
201 { 337 {
202 I32 i = AvFILLp (padlist); 338 I32 i = AvFILLp (padlist);
… …
223 AV *padlist; 359 AV *padlist;
224 AV *av = (AV *)mg->mg_obj; 360 AV *av = (AV *)mg->mg_obj;
225 361
226 /* casting is fun. */ 362 /* casting is fun. */
227 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
228 free_padlist (padlist); 364 free_padlist (aTHX_ padlist);
229 365
230 SvREFCNT_dec (av); 366 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
231 367
232 return 0; 368 return 0;
233} 369}
234 370
235#define PERL_MAGIC_coro PERL_MAGIC_ext 371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
236 373
237static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 374static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0,
376 coro_cv_free
377};
238 378
239#define CORO_MAGIC(cv) \ 379#define CORO_MAGIC(sv,type) \
240 SvMAGIC (cv) \ 380 SvMAGIC (sv) \
241 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 381 ? SvMAGIC (sv)->mg_type == type \
242 ? SvMAGIC (cv) \ 382 ? SvMAGIC (sv) \
243 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 383 : mg_find (sv, type) \
244 : 0 384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
245 414
246/* the next two functions merely cache the padlists */ 415/* the next two functions merely cache the padlists */
247static void 416static void
248get_padlist (CV *cv) 417get_padlist (pTHX_ CV *cv)
249{ 418{
250 MAGIC *mg = CORO_MAGIC (cv); 419 MAGIC *mg = CORO_MAGIC_cv (cv);
251 AV *av; 420 AV *av;
252 421
253 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 422 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
254 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 423 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255 else 424 else
256 { 425 {
257#if 0 426#if CORO_PREFER_PERL_FUNCTIONS
258 /* this is probably cleaner, but also slower? */ 427 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */
259 CV *cp = Perl_cv_clone (cv); 429 CV *cp = Perl_cv_clone (cv);
260 CvPADLIST (cv) = CvPADLIST (cp); 430 CvPADLIST (cv) = CvPADLIST (cp);
261 CvPADLIST (cp) = 0; 431 CvPADLIST (cp) = 0;
262 SvREFCNT_dec (cp); 432 SvREFCNT_dec (cp);
263#else 433#else
264 CvPADLIST (cv) = coro_clone_padlist (cv); 434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265#endif 435#endif
266 } 436 }
267} 437}
268 438
269static void 439static void
270put_padlist (CV *cv) 440put_padlist (pTHX_ CV *cv)
271{ 441{
272 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
273 AV *av; 443 AV *av;
274 444
275 if (!mg) 445 if (expect_false (!mg))
276 { 446 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
277 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
278 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
279 mg->mg_virtual = &vtbl_coro;
280 mg->mg_obj = (SV *)newAV ();
281 }
282 447
283 av = (AV *)mg->mg_obj; 448 av = (AV *)mg->mg_obj;
284 449
285 if (AvFILLp (av) >= AvMAX (av)) 450 if (expect_false (AvFILLp (av) >= AvMAX (av)))
286 av_extend (av, AvMAX (av) + 1); 451 av_extend (av, AvMAX (av) + 1);
287 452
288 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289} 454}
290 455
291#define SB do { 456/** load & save, init *******************************************************/
292#define SE } while (0)
293
294#define LOAD(state) load_state ((state))
295#define SAVE(state,flags) save_state ((state),(flags))
296
297#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298 457
299static void 458static void
300load_state (Coro__State c) 459load_perl (pTHX_ Coro__State c)
301{ 460{
461 perl_slots *slot = c->slot;
462 c->slot = 0;
463
464 PL_mainstack = c->mainstack;
465
466 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv;
470
302#define VAR(name,type) PL_ ## name = c->name; 471 #define VAR(name,type) PL_ ## name = slot->name;
303# include "state.h" 472 # include "state.h"
304#undef VAR 473 #undef VAR
305
306 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
309 474
310 { 475 {
311 dSP; 476 dSP;
477
312 CV *cv; 478 CV *cv;
313 479
314 /* now do the ugly restore mess */ 480 /* now do the ugly restore mess */
315 while ((cv = (CV *)POPs)) 481 while (expect_true (cv = (CV *)POPs))
316 { 482 {
317 put_padlist (cv); /* mark this padlist as available */ 483 put_padlist (aTHX_ cv); /* mark this padlist as available */
318 CvDEPTH (cv) = PTR2IV (POPs); 484 CvDEPTH (cv) = PTR2IV (POPs);
319 CvPADLIST (cv) = (AV *)POPs; 485 CvPADLIST (cv) = (AV *)POPs;
320 } 486 }
321 487
322 PUTBACK; 488 PUTBACK;
323 } 489 }
324} 490}
325 491
326static void 492static void
327save_state (Coro__State c, int flags) 493save_perl (pTHX_ Coro__State c)
328{ 494{
329 { 495 {
330 dSP; 496 dSP;
331 I32 cxix = cxstack_ix; 497 I32 cxix = cxstack_ix;
332 PERL_CONTEXT *ccstk = cxstack; 498 PERL_CONTEXT *ccstk = cxstack;
… …
335 /* 501 /*
336 * the worst thing you can imagine happens first - we have to save 502 * the worst thing you can imagine happens first - we have to save
337 * (and reinitialize) all cv's in the whole callchain :( 503 * (and reinitialize) all cv's in the whole callchain :(
338 */ 504 */
339 505
340 PUSHs (Nullsv); 506 XPUSHs (Nullsv);
341 /* this loop was inspired by pp_caller */ 507 /* this loop was inspired by pp_caller */
342 for (;;) 508 for (;;)
343 { 509 {
344 while (cxix >= 0) 510 while (expect_true (cxix >= 0))
345 { 511 {
346 PERL_CONTEXT *cx = &ccstk[cxix--]; 512 PERL_CONTEXT *cx = &ccstk[cxix--];
347 513
348 if (CxTYPE (cx) == CXt_SUB) 514 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
349 { 515 {
350 CV *cv = cx->blk_sub.cv; 516 CV *cv = cx->blk_sub.cv;
351 517
352 if (CvDEPTH (cv)) 518 if (expect_true (CvDEPTH (cv)))
353 { 519 {
354 EXTEND (SP, 3); 520 EXTEND (SP, 3);
355
356 PUSHs ((SV *)CvPADLIST (cv)); 521 PUSHs ((SV *)CvPADLIST (cv));
357 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 522 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
358 PUSHs ((SV *)cv); 523 PUSHs ((SV *)cv);
359 524
360 CvDEPTH (cv) = 0; 525 CvDEPTH (cv) = 0;
361 get_padlist (cv); 526 get_padlist (aTHX_ cv);
362 } 527 }
363 } 528 }
364#ifdef CXt_FORMAT
365 else if (CxTYPE (cx) == CXt_FORMAT)
366 {
367 /* I never used formats, so how should I know how these are implemented? */
368 /* my bold guess is as a simple, plain sub... */
369 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
370 }
371#endif
372 } 529 }
373 530
374 if (top_si->si_type == PERLSI_MAIN) 531 if (expect_true (top_si->si_type == PERLSI_MAIN))
375 break; 532 break;
376 533
377 top_si = top_si->si_prev; 534 top_si = top_si->si_prev;
378 ccstk = top_si->si_cxstack; 535 ccstk = top_si->si_cxstack;
379 cxix = top_si->si_cxix; 536 cxix = top_si->si_cxix;
380 } 537 }
381 538
382 PUTBACK; 539 PUTBACK;
383 } 540 }
384 541
385 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 542 /* allocate some space on the context stack for our purposes */
386 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 543 /* we manually unroll here, as usually 2 slots is enough */
387 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 544 if (SLOT_COUNT >= 1) CXINC;
545 if (SLOT_COUNT >= 2) CXINC;
546 if (SLOT_COUNT >= 3) CXINC;
547 {
548 int i;
549 for (i = 3; i < SLOT_COUNT; ++i)
550 CXINC;
551 }
552 cxstack_ix -= SLOT_COUNT; /* undo allocation */
388 553
554 c->mainstack = PL_mainstack;
555
556 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558
559 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV;
561 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv);
563
389#define VAR(name,type)c->name = PL_ ## name; 564 #define VAR(name,type) slot->name = PL_ ## name;
390# include "state.h" 565 # include "state.h"
391#undef VAR 566 #undef VAR
567 }
392} 568}
393 569
394/* 570/*
395 * allocate various perl stacks. This is an exact copy 571 * allocate various perl stacks. This is an exact copy
396 * of perl.c:init_stacks, except that it uses less memory 572 * of perl.c:init_stacks, except that it uses less memory
397 * on the (sometimes correct) assumption that coroutines do 573 * on the (sometimes correct) assumption that coroutines do
398 * not usually need a lot of stackspace. 574 * not usually need a lot of stackspace.
399 */ 575 */
576#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks
578#else
400static void 579static void
401coro_init_stacks () 580coro_init_stacks (pTHX)
402{ 581{
403 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 582 PL_curstackinfo = new_stackinfo(32, 8);
404 PL_curstackinfo->si_type = PERLSI_MAIN; 583 PL_curstackinfo->si_type = PERLSI_MAIN;
405 PL_curstack = PL_curstackinfo->si_stack; 584 PL_curstack = PL_curstackinfo->si_stack;
406 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 585 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
407 586
408 PL_stack_base = AvARRAY(PL_curstack); 587 PL_stack_base = AvARRAY(PL_curstack);
409 PL_stack_sp = PL_stack_base; 588 PL_stack_sp = PL_stack_base;
410 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 589 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
411 590
412 New(50,PL_tmps_stack,128,SV*); 591 New(50,PL_tmps_stack,32,SV*);
413 PL_tmps_floor = -1; 592 PL_tmps_floor = -1;
414 PL_tmps_ix = -1; 593 PL_tmps_ix = -1;
415 PL_tmps_max = 128; 594 PL_tmps_max = 32;
416 595
417 New(54,PL_markstack,32,I32); 596 New(54,PL_markstack,16,I32);
418 PL_markstack_ptr = PL_markstack; 597 PL_markstack_ptr = PL_markstack;
419 PL_markstack_max = PL_markstack + 32; 598 PL_markstack_max = PL_markstack + 16;
420 599
421#ifdef SET_MARK_OFFSET 600#ifdef SET_MARK_OFFSET
422 SET_MARK_OFFSET; 601 SET_MARK_OFFSET;
423#endif 602#endif
424 603
425 New(54,PL_scopestack,32,I32); 604 New(54,PL_scopestack,8,I32);
426 PL_scopestack_ix = 0; 605 PL_scopestack_ix = 0;
427 PL_scopestack_max = 32; 606 PL_scopestack_max = 8;
428 607
429 New(54,PL_savestack,64,ANY); 608 New(54,PL_savestack,24,ANY);
430 PL_savestack_ix = 0; 609 PL_savestack_ix = 0;
431 PL_savestack_max = 64; 610 PL_savestack_max = 24;
432 611
433#if !PERL_VERSION_ATLEAST (5,9,0) 612#if !PERL_VERSION_ATLEAST (5,10,0)
434 New(54,PL_retstack,16,OP*); 613 New(54,PL_retstack,4,OP*);
435 PL_retstack_ix = 0; 614 PL_retstack_ix = 0;
436 PL_retstack_max = 16; 615 PL_retstack_max = 4;
437#endif 616#endif
438} 617}
618#endif
439 619
440/* 620/*
441 * destroy the stacks, the callchain etc... 621 * destroy the stacks, the callchain etc...
442 */ 622 */
443static void 623static void
444coro_destroy_stacks () 624coro_destroy_stacks (pTHX)
445{ 625{
446 if (!IN_DESTRUCT)
447 {
448 /* is this ugly, I ask? */
449 LEAVE_SCOPE (0);
450
451 /* sure it is, but more important: is it correct?? :/ */
452 FREETMPS;
453
454 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
455 }
456
457 while (PL_curstackinfo->si_next) 626 while (PL_curstackinfo->si_next)
458 PL_curstackinfo = PL_curstackinfo->si_next; 627 PL_curstackinfo = PL_curstackinfo->si_next;
459 628
460 while (PL_curstackinfo) 629 while (PL_curstackinfo)
461 { 630 {
462 PERL_SI *p = PL_curstackinfo->si_prev; 631 PERL_SI *p = PL_curstackinfo->si_prev;
463 632
464 { /*D*//*remove*/
465 dSP;
466 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467 PUTBACK; /* possibly superfluous */
468 }
469
470 if (!IN_DESTRUCT) 633 if (!IN_DESTRUCT)
471 {
472 dounwind (-1);/*D*//*remove*/
473 SvREFCNT_dec (PL_curstackinfo->si_stack); 634 SvREFCNT_dec (PL_curstackinfo->si_stack);
474 }
475 635
476 Safefree (PL_curstackinfo->si_cxstack); 636 Safefree (PL_curstackinfo->si_cxstack);
477 Safefree (PL_curstackinfo); 637 Safefree (PL_curstackinfo);
478 PL_curstackinfo = p; 638 PL_curstackinfo = p;
479 } 639 }
480 640
481 Safefree (PL_tmps_stack); 641 Safefree (PL_tmps_stack);
482 Safefree (PL_markstack); 642 Safefree (PL_markstack);
483 Safefree (PL_scopestack); 643 Safefree (PL_scopestack);
484 Safefree (PL_savestack); 644 Safefree (PL_savestack);
485#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
486 Safefree (PL_retstack); 646 Safefree (PL_retstack);
487#endif 647#endif
488} 648}
489 649
650static size_t
651coro_rss (pTHX_ struct coro *coro)
652{
653 size_t rss = sizeof (*coro);
654
655 if (coro->mainstack)
656 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING)
661 {
662 slot = &tmp_slot;
663
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR
667 }
668 else
669 slot = coro->slot;
670
671 if (slot)
672 {
673 rss += sizeof (slot->curstackinfo);
674 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
675 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
676 rss += slot->tmps_max * sizeof (SV *);
677 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
678 rss += slot->scopestack_max * sizeof (I32);
679 rss += slot->savestack_max * sizeof (ANY);
680
681#if !PERL_VERSION_ATLEAST (5,10,0)
682 rss += slot->retstack_max * sizeof (OP *);
683#endif
684 }
685 }
686
687 return rss;
688}
689
690/** coroutine stack handling ************************************************/
691
692static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
693static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
694static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
695
696/* apparently < 5.8.8 */
697#ifndef MgPV_nolen_const
698#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
699 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
700 (const char*)(mg)->mg_ptr)
701#endif
702
703/*
704 * This overrides the default magic get method of %SIG elements.
705 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
706 * and instead of tryign to save and restore the hash elements, we just provide
707 * readback here.
708 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
709 * not expecting this to actually change the hook. This is a potential problem
710 * when a schedule happens then, but we ignore this.
711 */
712static int
713coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
714{
715 const char *s = MgPV_nolen_const (mg);
716
717 if (*s == '_')
718 {
719 SV **svp = 0;
720
721 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
722 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
723
724 if (svp)
725 {
726 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
727 return 0;
728 }
729 }
730
731 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
732}
733
734static int
735coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
736{
737 const char *s = MgPV_nolen_const (mg);
738
739 if (*s == '_')
740 {
741 SV **svp = 0;
742
743 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
744 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
745
746 if (svp)
747 {
748 SV *old = *svp;
749 *svp = 0;
750 SvREFCNT_dec (old);
751 return 0;
752 }
753 }
754
755 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
756}
757
758static int
759coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
760{
761 const char *s = MgPV_nolen_const (mg);
762
763 if (*s == '_')
764 {
765 SV **svp = 0;
766
767 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769
770 if (svp)
771 {
772 SV *old = *svp;
773 *svp = newSVsv (sv);
774 SvREFCNT_dec (old);
775 return 0;
776 }
777 }
778
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780}
781
490static void 782static void
491setup_coro (struct coro *coro) 783coro_setup (pTHX_ struct coro *coro)
492{ 784{
493 /* 785 /*
494 * emulate part of the perl startup here. 786 * emulate part of the perl startup here.
495 */ 787 */
496
497 coro_init_stacks (); 788 coro_init_stacks (aTHX);
498 789
790 PL_runops = RUNOPS_DEFAULT;
499 PL_curcop = &PL_compiling; 791 PL_curcop = &PL_compiling;
500 PL_in_eval = EVAL_NULL; 792 PL_in_eval = EVAL_NULL;
793 PL_comppad = 0;
501 PL_curpm = 0; 794 PL_curpm = 0;
795 PL_curpad = 0;
502 PL_localizing = 0; 796 PL_localizing = 0;
503 PL_dirty = 0; 797 PL_dirty = 0;
504 PL_restartop = 0; 798 PL_restartop = 0;
799#if PERL_VERSION_ATLEAST (5,10,0)
800 PL_parser = 0;
801#endif
802
803 /* recreate the die/warn hooks */
804 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
805 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
806
807 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
811 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
505 813
506 { 814 {
507 dSP; 815 dSP;
508 LOGOP myop; 816 LOGOP myop;
509 817
510 SvREFCNT_dec (GvAV (PL_defgv));
511 GvAV (PL_defgv) = coro->args; coro->args = 0;
512
513 Zero (&myop, 1, LOGOP); 818 Zero (&myop, 1, LOGOP);
514 myop.op_next = Nullop; 819 myop.op_next = Nullop;
515 myop.op_flags = OPf_WANT_VOID; 820 myop.op_flags = OPf_WANT_VOID;
516 821
517 PUSHMARK (SP); 822 PUSHMARK (SP);
518 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
519 PUTBACK; 824 PUTBACK;
520 PL_op = (OP *)&myop; 825 PL_op = (OP *)&myop;
521 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
522 SPAGAIN; 827 SPAGAIN;
523 } 828 }
524 829
525 ENTER; /* necessary e.g. for dounwind */ 830 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */
835 ENTER;
526} 836}
527 837
528static void 838static void
839coro_destroy (pTHX_ struct coro *coro)
840{
841 if (!IN_DESTRUCT)
842 {
843 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0);
845 assert (PL_tmps_floor == -1);
846
847 /* free all temporaries */
848 FREETMPS;
849 assert (PL_tmps_ix == -1);
850
851 /* unwind all extra stacks */
852 POPSTACK_TO (PL_mainstack);
853
854 /* unwind main stack */
855 dounwind (-1);
856 }
857
858 SvREFCNT_dec (GvSV (PL_defgv));
859 SvREFCNT_dec (GvAV (PL_defgv));
860 SvREFCNT_dec (GvSV (PL_errgv));
861 SvREFCNT_dec (PL_defoutgv);
862 SvREFCNT_dec (PL_rs);
863 SvREFCNT_dec (GvSV (irsgv));
864
865 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook);
867
868 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw);
870
871 coro_destroy_stacks (aTHX);
872}
873
874static void
529free_coro_mortal () 875free_coro_mortal (pTHX)
530{ 876{
531 if (coro_mortal) 877 if (expect_true (coro_mortal))
532 { 878 {
533 SvREFCNT_dec (coro_mortal); 879 SvREFCNT_dec (coro_mortal);
534 coro_mortal = 0; 880 coro_mortal = 0;
535 } 881 }
536} 882}
537 883
884static int
885runops_trace (pTHX)
886{
887 COP *oldcop = 0;
888 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx;
891
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 {
894 PERL_ASYNC_CHECK ();
895
896 if (cctx->flags & CC_TRACE_ALL)
897 {
898 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
899 {
900 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
901 SV **bot, **top;
902 AV *av = newAV (); /* return values */
903 SV **cb;
904 dSP;
905
906 GV *gv = CvGV (cx->blk_sub.cv);
907 SV *fullname = sv_2mortal (newSV (0));
908 if (isGV (gv))
909 gv_efullname3 (fullname, gv, 0);
910
911 bot = PL_stack_base + cx->blk_oldsp + 1;
912 top = cx->blk_gimme == G_ARRAY ? SP + 1
913 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot;
915
916 av_extend (av, top - bot);
917 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++));
919
920 PL_runops = RUNOPS_DEFAULT;
921 ENTER;
922 SAVETMPS;
923 EXTEND (SP, 3);
924 PUSHMARK (SP);
925 PUSHs (&PL_sv_no);
926 PUSHs (fullname);
927 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
928 PUTBACK;
929 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
930 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
931 SPAGAIN;
932 FREETMPS;
933 LEAVE;
934 PL_runops = runops_trace;
935 }
936
937 if (oldcop != PL_curcop)
938 {
939 oldcop = PL_curcop;
940
941 if (PL_curcop != &PL_compiling)
942 {
943 SV **cb;
944
945 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
946 {
947 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
948
949 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
950 {
951 runops_proc_t old_runops = PL_runops;
952 dSP;
953 GV *gv = CvGV (cx->blk_sub.cv);
954 SV *fullname = sv_2mortal (newSV (0));
955
956 if (isGV (gv))
957 gv_efullname3 (fullname, gv, 0);
958
959 PL_runops = RUNOPS_DEFAULT;
960 ENTER;
961 SAVETMPS;
962 EXTEND (SP, 3);
963 PUSHMARK (SP);
964 PUSHs (&PL_sv_yes);
965 PUSHs (fullname);
966 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
967 PUTBACK;
968 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
969 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
970 SPAGAIN;
971 FREETMPS;
972 LEAVE;
973 PL_runops = runops_trace;
974 }
975
976 oldcxix = cxstack_ix;
977 }
978
979 if (cctx->flags & CC_TRACE_LINE)
980 {
981 dSP;
982
983 PL_runops = RUNOPS_DEFAULT;
984 ENTER;
985 SAVETMPS;
986 EXTEND (SP, 3);
987 PL_runops = RUNOPS_DEFAULT;
988 PUSHMARK (SP);
989 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
990 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
991 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN;
995 FREETMPS;
996 LEAVE;
997 PL_runops = runops_trace;
998 }
999 }
1000 }
1001 }
1002 }
1003
1004 TAINT_NOT;
1005 return 0;
1006}
1007
538/* inject a fake call to Coro::State::_cctx_init into the execution */ 1008/* inject a fake call to Coro::State::_cctx_init into the execution */
1009/* _cctx_init should be careful, as it could be called at almost any time */
1010/* during execution of a perl program */
539static void NOINLINE 1011static void NOINLINE
540prepare_cctx (coro_cctx *cctx) 1012cctx_prepare (pTHX_ coro_cctx *cctx)
541{ 1013{
542 dSP; 1014 dSP;
543 LOGOP myop; 1015 LOGOP myop;
1016
1017 PL_top_env = &PL_start_env;
1018
1019 if (cctx->flags & CC_TRACE)
1020 PL_runops = runops_trace;
544 1021
545 Zero (&myop, 1, LOGOP); 1022 Zero (&myop, 1, LOGOP);
546 myop.op_next = PL_op; 1023 myop.op_next = PL_op;
547 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
548 1025
… …
554 PL_op = (OP *)&myop; 1031 PL_op = (OP *)&myop;
555 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
556 SPAGAIN; 1033 SPAGAIN;
557} 1034}
558 1035
1036/*
1037 * this is a _very_ stripped down perl interpreter ;)
1038 */
559static void 1039static void
560coro_run (void *arg) 1040cctx_run (void *arg)
561{ 1041{
1042 dTHX;
1043
562 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */
563 UNLOCK; 1045 UNLOCK;
564 1046
565 /* 1047 /* we now skip the entersub that lead to transfer() */
566 * this is a _very_ stripped down perl interpreter ;) 1048 PL_op = PL_op->op_next;
567 */
568 PL_top_env = &PL_start_env;
569 1049
570 /* inject call to cctx_init */ 1050 /* inject a fake subroutine call to cctx_init */
571 prepare_cctx ((coro_cctx *)arg); 1051 cctx_prepare (aTHX_ (coro_cctx *)arg);
572 1052
573 /* somebody will hit me for both perl_run and PL_restartop */ 1053 /* somebody or something will hit me for both perl_run and PL_restartop */
574 PL_restartop = PL_op; 1054 PL_restartop = PL_op;
575 perl_run (PL_curinterp); 1055 perl_run (PL_curinterp);
576 1056
577 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1057 /*
578 abort (); 1058 * If perl-run returns we assume exit() was being called or the coro
1059 * fell off the end, which seems to be the only valid (non-bug)
1060 * reason for perl_run to return. We try to exit by jumping to the
1061 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept
1063 */
1064 PL_top_env = main_top_env;
1065 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
579} 1066}
580 1067
581static coro_cctx * 1068static coro_cctx *
582cctx_new () 1069cctx_new ()
583{ 1070{
584 coro_cctx *cctx; 1071 coro_cctx *cctx;
1072 void *stack_start;
1073 size_t stack_size;
585 1074
586 ++cctx_count; 1075 ++cctx_count;
587 1076
588 New (0, cctx, 1, coro_cctx); 1077 Newz (0, cctx, 1, coro_cctx);
589 1078
590#if HAVE_MMAP 1079#if HAVE_MMAP
591
592 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1080 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
593 /* mmap supposedly does allocate-on-write for us */ 1081 /* mmap supposedly does allocate-on-write for us */
594 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1082 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
595 1083
596 if (cctx->sptr == (void *)-1) 1084 if (cctx->sptr != (void *)-1)
597 {
598 perror ("FATAL: unable to mmap stack for coroutine");
599 _exit (EXIT_FAILURE);
600 } 1085 {
601
602# if STACKGUARD 1086# if CORO_STACKGUARD
603 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
604# endif 1088# endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED;
1092 }
1093 else
1094#endif
1095 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long);
605 1098
606#else
607
608 cctx->ssize = STACKSIZE * (long)sizeof (long);
609 New (0, cctx->sptr, STACKSIZE, long);
610
611 if (!cctx->sptr) 1099 if (!cctx->sptr)
612 { 1100 {
613 perror ("FATAL: unable to malloc stack for coroutine"); 1101 perror ("FATAL: unable to allocate stack for coroutine");
614 _exit (EXIT_FAILURE); 1102 _exit (EXIT_FAILURE);
615 } 1103 }
616 1104
617#endif 1105 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize;
1107 }
618 1108
619#if USE_VALGRIND 1109 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
620 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
621 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
622 cctx->ssize + (char *)cctx->sptr
623 );
624#endif
625
626 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
627 1111
628 return cctx; 1112 return cctx;
629} 1113}
630 1114
631static void 1115static void
… …
634 if (!cctx) 1118 if (!cctx)
635 return; 1119 return;
636 1120
637 --cctx_count; 1121 --cctx_count;
638 1122
639#if USE_VALGRIND 1123#if CORO_USE_VALGRIND
640 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641#endif 1125#endif
642 1126
643#if HAVE_MMAP 1127#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED)
644 munmap (cctx->sptr, cctx->ssize); 1129 munmap (cctx->sptr, cctx->ssize);
645#else 1130 else
1131#endif
646 Safefree (cctx->sptr); 1132 Safefree (cctx->sptr);
647#endif
648 1133
649 Safefree (cctx); 1134 Safefree (cctx);
650} 1135}
651 1136
1137/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1139
652static coro_cctx * 1140static coro_cctx *
653cctx_get () 1141cctx_get (pTHX)
654{ 1142{
655 coro_cctx *cctx; 1143 while (expect_true (cctx_first))
656
657 if (cctx_first)
658 { 1144 {
659 cctx = cctx_first; 1145 coro_cctx *cctx = cctx_first;
660 cctx_first = cctx->next; 1146 cctx_first = cctx->next;
661 --cctx_idle; 1147 --cctx_idle;
662 } 1148
663 else 1149 if (expect_true (!CCTX_EXPIRED (cctx)))
664 { 1150 return cctx;
665 cctx = cctx_new (); 1151
666 PL_op = PL_op->op_next; 1152 cctx_destroy (cctx);
667 } 1153 }
668 1154
669 return cctx; 1155 return cctx_new ();
670} 1156}
671 1157
672static void 1158static void
673cctx_put (coro_cctx *cctx) 1159cctx_put (coro_cctx *cctx)
674{ 1160{
675 /* free another cctx if overlimit */ 1161 /* free another cctx if overlimit */
676 if (cctx_idle >= MAX_IDLE_CCTX) 1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
677 { 1163 {
678 coro_cctx *first = cctx_first; 1164 coro_cctx *first = cctx_first;
679 cctx_first = first->next; 1165 cctx_first = first->next;
680 --cctx_idle; 1166 --cctx_idle;
681 1167
682 assert (!first->inuse);
683 cctx_destroy (first); 1168 cctx_destroy (first);
684 } 1169 }
685 1170
686 ++cctx_idle; 1171 ++cctx_idle;
687 cctx->next = cctx_first; 1172 cctx->next = cctx_first;
688 cctx_first = cctx; 1173 cctx_first = cctx;
689} 1174}
690 1175
691/* never call directly, always through the coro_state_transfer global variable */ 1176/** coroutine switching *****************************************************/
1177
1178static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{
1181 if (expect_true (prev != next))
1182 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1185
1186 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1188
1189 if (expect_false (next->flags & CF_DESTROYED))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1191
1192#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1195#endif
1196 }
1197}
1198
1199/* always use the TRANSFER macro */
692static void NOINLINE 1200static void NOINLINE
693transfer (struct coro *prev, struct coro *next, int flags) 1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
694{ 1202{
695 dSTACKLEVEL; 1203 dSTACKLEVEL;
1204 static volatile int has_throw;
696 1205
697 /* sometimes transfer is only called to set idle_sp */ 1206 /* sometimes transfer is only called to set idle_sp */
698 if (flags == TRANSFER_SET_STACKLEVEL) 1207 if (expect_false (!next))
1208 {
699 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1210 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211 }
700 else if (prev != next) 1212 else if (expect_true (prev != next))
701 { 1213 {
702 coro_cctx *prev__cctx; 1214 coro_cctx *prev__cctx;
703 1215
704 if (prev->flags & CF_NEW) 1216 if (expect_false (prev->flags & CF_NEW))
705 { 1217 {
706 /* create a new empty context */ 1218 /* create a new empty context */
707 Newz (0, prev->cctx, 1, coro_cctx); 1219 Newz (0, prev->cctx, 1, coro_cctx);
708 prev->cctx->inuse = 1;
709 prev->flags &= ~CF_NEW; 1220 prev->flags &= ~CF_NEW;
710 prev->flags |= CF_RUNNING; 1221 prev->flags |= CF_RUNNING;
711 } 1222 }
712 1223
713 /*TODO: must not croak here */
714 if (!prev->flags & CF_RUNNING)
715 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
716
717 if (next->flags & CF_RUNNING)
718 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
719
720 prev->flags &= ~CF_RUNNING; 1224 prev->flags &= ~CF_RUNNING;
721 next->flags |= CF_RUNNING; 1225 next->flags |= CF_RUNNING;
722 1226
723 LOCK; 1227 LOCK;
724 1228
1229 /* first get rid of the old state */
1230 save_perl (aTHX_ prev);
1231
725 if (next->flags & CF_NEW) 1232 if (expect_false (next->flags & CF_NEW))
726 { 1233 {
727 /* need to start coroutine */ 1234 /* need to start coroutine */
728 next->flags &= ~CF_NEW; 1235 next->flags &= ~CF_NEW;
729 /* first get rid of the old state */
730 SAVE (prev, -1);
731 /* setup coroutine call */ 1236 /* setup coroutine call */
732 setup_coro (next); 1237 coro_setup (aTHX_ next);
733 /* need a new stack */
734 assert (!next->stack);
735 } 1238 }
736 else 1239 else
737 { 1240 load_perl (aTHX_ next);
738 /* coroutine already started */
739 SAVE (prev, flags);
740 LOAD (next);
741 }
742 1241
743 prev__cctx = prev->cctx; 1242 prev__cctx = prev->cctx;
744 1243
745 /* possibly "free" the cctx */ 1244 /* possibly "free" the cctx */
1245 if (expect_true (
746 if (prev__cctx->idle_sp == STACKLEVEL) 1246 prev__cctx->idle_sp == STACKLEVEL
1247 && !(prev__cctx->flags & CC_TRACE)
1248 && !force_cctx
1249 ))
747 { 1250 {
748 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
749 assert (PL_top_env == prev__cctx->top_env); 1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
750 1253
751 prev->cctx = 0; 1254 prev->cctx = 0;
752 1255
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1258 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1259 if (!next->cctx)
1260 next->cctx = cctx_get (aTHX);
1261
753 cctx_put (prev__cctx); 1262 cctx_put (prev__cctx);
754 prev__cctx->inuse = 0;
755 } 1263 }
756 1264
1265 ++next->usecount;
1266
757 if (!next->cctx) 1267 if (expect_true (!next->cctx))
758 {
759 next->cctx = cctx_get (); 1268 next->cctx = cctx_get (aTHX);
760 assert (!next->cctx->inuse);
761 next->cctx->inuse = 1;
762 }
763 1269
1270 has_throw = !!next->throw;
1271
764 if (prev__cctx != next->cctx) 1272 if (expect_false (prev__cctx != next->cctx))
765 { 1273 {
766 prev__cctx->top_env = PL_top_env; 1274 prev__cctx->top_env = PL_top_env;
767 PL_top_env = next->cctx->top_env; 1275 PL_top_env = next->cctx->top_env;
768 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769 } 1277 }
770 1278
771 free_coro_mortal (); 1279 free_coro_mortal (aTHX);
772
773 UNLOCK; 1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
774 } 1294 }
775} 1295}
776 1296
777struct transfer_args 1297struct transfer_args
778{ 1298{
779 struct coro *prev, *next; 1299 struct coro *prev, *next;
780 int flags;
781}; 1300};
782 1301
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
783#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
784 1304
1305/** high level stuff ********************************************************/
1306
785static void 1307static int
786coro_state_destroy (struct coro *coro) 1308coro_state_destroy (pTHX_ struct coro *coro)
787{ 1309{
788 if (coro->refcnt--) 1310 if (coro->flags & CF_DESTROYED)
789 return; 1311 return 0;
1312
1313 coro->flags |= CF_DESTROYED;
1314
1315 if (coro->flags & CF_READY)
1316 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready;
1321 UNLOCK;
1322 }
1323 else
1324 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
790 1325
791 if (coro->mainstack && coro->mainstack != main_mainstack) 1326 if (coro->mainstack && coro->mainstack != main_mainstack)
792 { 1327 {
793 struct coro temp; 1328 struct coro temp;
794 1329
795 if (coro->flags & CF_RUNNING) 1330 if (coro->flags & CF_RUNNING)
796 croak ("FATAL: tried to destroy currently running coroutine"); 1331 croak ("FATAL: tried to destroy currently running coroutine");
797 1332
798 SAVE ((&temp), TRANSFER_SAVE_ALL); 1333 save_perl (aTHX_ &temp);
799 LOAD (coro); 1334 load_perl (aTHX_ coro);
800 1335
801 coro_destroy_stacks (); 1336 coro_destroy (aTHX_ coro);
802 1337
803 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1338 load_perl (aTHX_ &temp);
804 1339
805 coro->mainstack = 0; 1340 coro->slot = 0;
806 } 1341 }
807 1342
808 cctx_destroy (coro->cctx); 1343 cctx_destroy (coro->cctx);
809 SvREFCNT_dec (coro->args); 1344 SvREFCNT_dec (coro->args);
810 Safefree (coro); 1345
1346 if (coro->next) coro->next->prev = coro->prev;
1347 if (coro->prev) coro->prev->next = coro->next;
1348 if (coro == coro_first) coro_first = coro->next;
1349
1350 return 1;
811} 1351}
812 1352
813static int 1353static int
814coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1354coro_state_free (pTHX_ SV *sv, MAGIC *mg)
815{ 1355{
816 struct coro *coro = (struct coro *)mg->mg_ptr; 1356 struct coro *coro = (struct coro *)mg->mg_ptr;
817 mg->mg_ptr = 0; 1357 mg->mg_ptr = 0;
818 1358
1359 coro->hv = 0;
1360
1361 if (--coro->refcnt < 0)
1362 {
819 coro_state_destroy (coro); 1363 coro_state_destroy (aTHX_ coro);
1364 Safefree (coro);
1365 }
820 1366
821 return 0; 1367 return 0;
822} 1368}
823 1369
824static int 1370static int
… …
831 return 0; 1377 return 0;
832} 1378}
833 1379
834static MGVTBL coro_state_vtbl = { 1380static MGVTBL coro_state_vtbl = {
835 0, 0, 0, 0, 1381 0, 0, 0, 0,
836 coro_state_clear, 1382 coro_state_free,
837 0, 1383 0,
838#ifdef MGf_DUP 1384#ifdef MGf_DUP
839 coro_state_dup, 1385 coro_state_dup,
840#else 1386#else
841# define MGf_DUP 0 1387# define MGf_DUP 0
842#endif 1388#endif
843}; 1389};
844 1390
845static struct coro *
846SvSTATE (SV *coro)
847{
848 HV *stash;
849 MAGIC *mg;
850
851 if (SvROK (coro))
852 coro = SvRV (coro);
853
854 stash = SvSTASH (coro);
855 if (stash != coro_stash && stash != coro_state_stash)
856 {
857 /* very slow, but rare, check */
858 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859 croak ("Coro::State object required");
860 }
861
862 mg = SvMAGIC (coro);
863 assert (mg->mg_type == PERL_MAGIC_ext);
864 return (struct coro *)mg->mg_ptr;
865}
866
867static void 1391static void
868prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1392prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
869{ 1393{
870 ta->prev = SvSTATE (prev); 1394 ta->prev = SvSTATE (prev_sv);
871 ta->next = SvSTATE (next); 1395 ta->next = SvSTATE (next_sv);
872 ta->flags = flags; 1396 TRANSFER_CHECK (*ta);
873} 1397}
874 1398
875static void 1399static void
876api_transfer (SV *prev, SV *next, int flags) 1400api_transfer (SV *prev_sv, SV *next_sv)
877{ 1401{
1402 dTHX;
878 struct transfer_args ta; 1403 struct transfer_args ta;
879 1404
880 prepare_transfer (&ta, prev, next, flags); 1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
881 TRANSFER (ta); 1406 TRANSFER (ta, 1);
882} 1407}
883 1408
884/** Coro ********************************************************************/ 1409/** Coro ********************************************************************/
885 1410
886#define PRIO_MAX 3
887#define PRIO_HIGH 1
888#define PRIO_NORMAL 0
889#define PRIO_LOW -1
890#define PRIO_IDLE -3
891#define PRIO_MIN -4
892
893/* for Coro.pm */
894static SV *coro_current;
895static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896static int coro_nready;
897
898static void 1411static void
899coro_enq (SV *coro_sv) 1412coro_enq (pTHX_ SV *coro_sv)
900{ 1413{
901 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1414 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
902 coro_nready++;
903} 1415}
904 1416
905static SV * 1417static SV *
906coro_deq (int min_prio) 1418coro_deq (pTHX)
907{ 1419{
908 int prio = PRIO_MAX - PRIO_MIN; 1420 int prio;
909 1421
910 min_prio -= PRIO_MIN;
911 if (min_prio < 0)
912 min_prio = 0;
913
914 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
915 if (AvFILLp (coro_ready [prio]) >= 0) 1423 if (AvFILLp (coro_ready [prio]) >= 0)
916 {
917 coro_nready--;
918 return av_shift (coro_ready [prio]); 1424 return av_shift (coro_ready [prio]);
919 }
920 1425
921 return 0; 1426 return 0;
922} 1427}
923 1428
924static int 1429static int
925api_ready (SV *coro_sv) 1430api_ready (SV *coro_sv)
926{ 1431{
1432 dTHX;
927 struct coro *coro; 1433 struct coro *coro;
1434 SV *sv_hook;
1435 void (*xs_hook)(void);
928 1436
929 if (SvROK (coro_sv)) 1437 if (SvROK (coro_sv))
930 coro_sv = SvRV (coro_sv); 1438 coro_sv = SvRV (coro_sv);
931 1439
932 coro = SvSTATE (coro_sv); 1440 coro = SvSTATE (coro_sv);
933 1441
934 if (coro->flags & CF_READY) 1442 if (coro->flags & CF_READY)
935 return 0; 1443 return 0;
936 1444
937#if 0 /* this is actually harmless */
938 if (coro->flags & CF_RUNNING)
939 croak ("Coro::ready called on currently running coroutine");
940#endif
941
942 coro->flags |= CF_READY; 1445 coro->flags |= CF_READY;
943 1446
944 LOCK; 1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451
945 coro_enq (SvREFCNT_inc (coro_sv)); 1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1453 ++coro_nready;
1454
946 UNLOCK; 1455 UNLOCK;
1456
1457 if (sv_hook)
1458 {
1459 dSP;
1460
1461 ENTER;
1462 SAVETMPS;
1463
1464 PUSHMARK (SP);
1465 PUTBACK;
1466 call_sv (sv_hook, G_DISCARD);
1467 SPAGAIN;
1468
1469 FREETMPS;
1470 LEAVE;
1471 }
1472
1473 if (xs_hook)
1474 xs_hook ();
947 1475
948 return 1; 1476 return 1;
949} 1477}
950 1478
951static int 1479static int
952api_is_ready (SV *coro_sv) 1480api_is_ready (SV *coro_sv)
953{ 1481{
1482 dTHX;
954 return !!SvSTATE (coro_sv)->flags & CF_READY; 1483 return !!(SvSTATE (coro_sv)->flags & CF_READY);
955} 1484}
956 1485
957static void 1486static void
958prepare_schedule (struct transfer_args *ta) 1487prepare_schedule (pTHX_ struct transfer_args *ta)
959{ 1488{
960 SV *prev, *next; 1489 SV *prev_sv, *next_sv;
961 1490
962 for (;;) 1491 for (;;)
963 { 1492 {
964 LOCK; 1493 LOCK;
965 next = coro_deq (PRIO_MIN); 1494 next_sv = coro_deq (aTHX);
1495
1496 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv))
1498 {
1499 dSP;
1500 UNLOCK;
1501
1502 ENTER;
1503 SAVETMPS;
1504
1505 PUSHMARK (SP);
1506 PUTBACK;
1507 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1508 SPAGAIN;
1509
1510 FREETMPS;
1511 LEAVE;
1512 continue;
1513 }
1514
1515 ta->next = SvSTATE (next_sv);
1516
1517 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */
1523 continue;
1524 }
1525
1526 --coro_nready;
966 UNLOCK; 1527 UNLOCK;
967
968 if (next)
969 break; 1528 break;
970
971 {
972 dSP;
973
974 ENTER;
975 SAVETMPS;
976
977 PUSHMARK (SP);
978 PUTBACK;
979 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
980
981 FREETMPS;
982 LEAVE;
983 } 1529 }
984 }
985
986 prev = SvRV (coro_current);
987 SvRV_set (coro_current, next);
988 1530
989 /* free this only after the transfer */ 1531 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current);
1533 ta->prev = SvSTATE (prev_sv);
1534 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY);
1536 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv);
1538
990 LOCK; 1539 LOCK;
991 free_coro_mortal (); 1540 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv;
992 UNLOCK; 1542 UNLOCK;
993 coro_mortal = prev;
994
995 assert (!SvROK(prev));//D
996 assert (!SvROK(next));//D
997
998 ta->prev = SvSTATE (prev);
999 ta->next = SvSTATE (next);
1000 ta->flags = TRANSFER_SAVE_ALL;
1001
1002 assert (ta->flags & CF_READY);
1003 ta->next->flags &= ~CF_READY;
1004} 1543}
1005 1544
1006static void 1545static void
1007prepare_cede (struct transfer_args *ta) 1546prepare_cede (pTHX_ struct transfer_args *ta)
1008{ 1547{
1009 api_ready (coro_current); 1548 api_ready (coro_current);
1010
1011 prepare_schedule (ta); 1549 prepare_schedule (aTHX_ ta);
1550}
1551
1552static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta)
1554{
1555 if (coro_nready)
1556 {
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta);
1559 api_ready (prev);
1560 return 1;
1561 }
1562 else
1563 return 0;
1012} 1564}
1013 1565
1014static void 1566static void
1015api_schedule (void) 1567api_schedule (void)
1016{ 1568{
1569 dTHX;
1017 struct transfer_args ta; 1570 struct transfer_args ta;
1018 1571
1019 prepare_schedule (&ta); 1572 prepare_schedule (aTHX_ &ta);
1020 TRANSFER (ta); 1573 TRANSFER (ta, 1);
1574}
1575
1576static int
1577api_cede (void)
1578{
1579 dTHX;
1580 struct transfer_args ta;
1581
1582 prepare_cede (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1);
1587 return 1;
1588 }
1589 else
1590 return 0;
1591}
1592
1593static int
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1021} 1606}
1022 1607
1023static void 1608static void
1024api_cede (void) 1609api_trace (SV *coro_sv, int flags)
1025{ 1610{
1026 struct transfer_args ta; 1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv);
1027 1613
1028 prepare_cede (&ta); 1614 if (flags & CC_TRACE)
1029 TRANSFER (ta); 1615 {
1030} 1616 if (!coro->cctx)
1617 coro->cctx = cctx_new ();
1618 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack");
1031 1620
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 {
1625 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1626
1627 if (coro->flags & CF_RUNNING)
1628 PL_runops = RUNOPS_DEFAULT;
1629 else
1630 coro->slot->runops = RUNOPS_DEFAULT;
1631 }
1632}
1633
1634static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1636{
1637 AV *padlist;
1638 AV *av = (AV *)mg->mg_obj;
1639
1640 abort ();
1641
1642 return 0;
1643}
1644
1645static MGVTBL coro_gensub_vtbl = {
1646 0, 0, 0, 0,
1647 coro_gensub_free
1648};
1649
1032MODULE = Coro::State PACKAGE = Coro::State 1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1033 1651
1034PROTOTYPES: DISABLE 1652PROTOTYPES: DISABLE
1035 1653
1036BOOT: 1654BOOT:
1037{ 1655{
1038#ifdef USE_ITHREADS 1656#ifdef USE_ITHREADS
1039 MUTEX_INIT (&coro_mutex); 1657 MUTEX_INIT (&coro_mutex);
1040#endif 1658#endif
1041 BOOT_PAGESIZE; 1659 BOOT_PAGESIZE;
1042 1660
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1663
1664 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1665 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1666 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1667
1668 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1669 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1670 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1671
1043 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1672 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044 1673
1045 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1674 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1046 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1675 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1047 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1676 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1677 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1048 1678
1049 main_mainstack = PL_mainstack; 1679 main_mainstack = PL_mainstack;
1680 main_top_env = PL_top_env;
1050 1681
1682 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev;
1684
1051 coroapi.ver = CORO_API_VERSION; 1685 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION;
1052 coroapi.transfer = api_transfer; 1687 coroapi.transfer = api_transfer;
1053 1688
1054 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1055} 1690}
1056 1691
1057SV * 1692SV *
1058new (char *klass, ...) 1693new (char *klass, ...)
1059 CODE: 1694 CODE:
1060{ 1695{
1061 struct coro *coro; 1696 struct coro *coro;
1697 MAGIC *mg;
1062 HV *hv; 1698 HV *hv;
1063 int i; 1699 int i;
1064 1700
1065 Newz (0, coro, 1, struct coro); 1701 Newz (0, coro, 1, struct coro);
1066 coro->args = newAV (); 1702 coro->args = newAV ();
1067 coro->flags = CF_NEW; 1703 coro->flags = CF_NEW;
1068 1704
1705 if (coro_first) coro_first->prev = coro;
1706 coro->next = coro_first;
1707 coro_first = coro;
1708
1069 hv = newHV (); 1709 coro->hv = hv = newHV ();
1070 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1710 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1711 mg->mg_flags |= MGf_DUP;
1071 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1712 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072 1713
1714 av_extend (coro->args, items - 1);
1073 for (i = 1; i < items; i++) 1715 for (i = 1; i < items; i++)
1074 av_push (coro->args, newSVsv (ST (i))); 1716 av_push (coro->args, newSVsv (ST (i)));
1075} 1717}
1076 OUTPUT: 1718 OUTPUT:
1077 RETVAL 1719 RETVAL
1078 1720
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1079void 1724void
1080_set_stacklevel (...) 1725_set_stacklevel (...)
1081 ALIAS: 1726 ALIAS:
1082 Coro::State::transfer = 1 1727 Coro::State::transfer = 1
1083 Coro::schedule = 2 1728 Coro::schedule = 2
1084 Coro::cede = 3 1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1085 CODE: 1731 CODE:
1086{ 1732{
1087 struct transfer_args ta; 1733 struct transfer_args ta;
1088 1734
1735 PUTBACK;
1089 switch (ix) 1736 switch (ix)
1090 { 1737 {
1091 case 0: 1738 case 0:
1092 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1093 ta.next = 0; 1740 ta.next = 0;
1094 ta.flags = TRANSFER_SET_STACKLEVEL;
1095 break; 1741 break;
1096 1742
1097 case 1: 1743 case 1:
1098 if (items != 3) 1744 if (items != 2)
1099 croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items); 1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100 1746
1101 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1102 break; 1748 break;
1103 1749
1104 case 2: 1750 case 2:
1105 prepare_schedule (&ta); 1751 prepare_schedule (aTHX_ &ta);
1106 break; 1752 break;
1107 1753
1108 case 3: 1754 case 3:
1109 prepare_cede (&ta); 1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1110 break; 1762 break;
1111 } 1763 }
1764 SPAGAIN;
1112 1765
1766 BARRIER;
1767 PUTBACK;
1113 TRANSFER (ta); 1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1114} 1771}
1772
1773bool
1774_destroy (SV *coro_sv)
1775 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1777 OUTPUT:
1778 RETVAL
1115 1779
1116void 1780void
1117_clone_state_from (SV *dst, SV *src)
1118 CODE:
1119{
1120 struct coro *coro_src = SvSTATE (src);
1121
1122 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1123
1124 ++coro_src->refcnt;
1125 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1126}
1127
1128void
1129_exit (code) 1781_exit (int code)
1130 int code
1131 PROTOTYPE: $ 1782 PROTOTYPE: $
1132 CODE: 1783 CODE:
1133 _exit (code); 1784 _exit (code);
1785
1786int
1787cctx_stacksize (int new_stacksize = 0)
1788 CODE:
1789 RETVAL = coro_stacksize;
1790 if (new_stacksize)
1791 coro_stacksize = new_stacksize;
1792 OUTPUT:
1793 RETVAL
1134 1794
1135int 1795int
1136cctx_count () 1796cctx_count ()
1137 CODE: 1797 CODE:
1138 RETVAL = cctx_count; 1798 RETVAL = cctx_count;
… …
1144 CODE: 1804 CODE:
1145 RETVAL = cctx_idle; 1805 RETVAL = cctx_idle;
1146 OUTPUT: 1806 OUTPUT:
1147 RETVAL 1807 RETVAL
1148 1808
1809void
1810list ()
1811 PPCODE:
1812{
1813 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv)
1816 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1817}
1818
1819void
1820call (Coro::State coro, SV *coderef)
1821 ALIAS:
1822 eval = 1
1823 CODE:
1824{
1825 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1826 {
1827 struct coro temp;
1828
1829 if (!(coro->flags & CF_RUNNING))
1830 {
1831 PUTBACK;
1832 save_perl (aTHX_ &temp);
1833 load_perl (aTHX_ coro);
1834 }
1835
1836 {
1837 dSP;
1838 ENTER;
1839 SAVETMPS;
1840 PUTBACK;
1841 PUSHSTACK;
1842 PUSHMARK (SP);
1843
1844 if (ix)
1845 eval_sv (coderef, 0);
1846 else
1847 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1848
1849 POPSTACK;
1850 SPAGAIN;
1851 FREETMPS;
1852 LEAVE;
1853 PUTBACK;
1854 }
1855
1856 if (!(coro->flags & CF_RUNNING))
1857 {
1858 save_perl (aTHX_ coro);
1859 load_perl (aTHX_ &temp);
1860 SPAGAIN;
1861 }
1862 }
1863}
1864
1865SV *
1866is_ready (Coro::State coro)
1867 PROTOTYPE: $
1868 ALIAS:
1869 is_ready = CF_READY
1870 is_running = CF_RUNNING
1871 is_new = CF_NEW
1872 is_destroyed = CF_DESTROYED
1873 CODE:
1874 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT:
1876 RETVAL
1877
1878void
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1880
1881SV *
1882has_cctx (Coro::State coro)
1883 PROTOTYPE: $
1884 CODE:
1885 RETVAL = boolSV (!!coro->cctx);
1886 OUTPUT:
1887 RETVAL
1888
1889int
1890is_traced (Coro::State coro)
1891 PROTOTYPE: $
1892 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT:
1895 RETVAL
1896
1897IV
1898rss (Coro::State coro)
1899 PROTOTYPE: $
1900 ALIAS:
1901 usecount = 1
1902 CODE:
1903 switch (ix)
1904 {
1905 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1906 case 1: RETVAL = coro->usecount; break;
1907 }
1908 OUTPUT:
1909 RETVAL
1910
1911void
1912force_cctx ()
1913 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923
1924void
1925swap_defsv (Coro::State self)
1926 PROTOTYPE: $
1927 ALIAS:
1928 swap_defav = 1
1929 CODE:
1930 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state");
1932 else
1933 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936
1937 SV *tmp = *src; *src = *dst; *dst = tmp;
1938 }
1939
1149MODULE = Coro::State PACKAGE = Coro 1940MODULE = Coro::State PACKAGE = Coro
1150 1941
1151BOOT: 1942BOOT:
1152{ 1943{
1153 int i; 1944 int i;
1154 1945
1946 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1947 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1948 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1949
1950 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1951 SvREADONLY_on (coro_current);
1952
1155 coro_stash = gv_stashpv ("Coro", TRUE); 1953 coro_stash = gv_stashpv ("Coro", TRUE);
1156 1954
1157 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1955 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1158 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1956 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1159 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1957 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1160 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1958 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1161 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1959 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1162 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1960 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1163 1961
1164 coro_current = get_sv ("Coro::current", FALSE);
1165 SvREADONLY_on (coro_current);
1166
1167 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1168 coro_ready[i] = newAV (); 1963 coro_ready[i] = newAV ();
1169 1964
1170 { 1965 {
1171 SV *sv = perl_get_sv("Coro::API", 1); 1966 SV *sv = perl_get_sv ("Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1172 1968
1173 coroapi.schedule = api_schedule; 1969 coroapi.schedule = api_schedule;
1174 coroapi.cede = api_cede; 1970 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself;
1175 coroapi.ready = api_ready; 1972 coroapi.ready = api_ready;
1176 coroapi.is_ready = api_is_ready; 1973 coroapi.is_ready = api_is_ready;
1177 coroapi.nready = &coro_nready; 1974 coroapi.nready = &coro_nready;
1178 coroapi.current = coro_current; 1975 coroapi.current = coro_current;
1179 1976
1180 GCoroAPI = &coroapi; 1977 GCoroAPI = &coroapi;
1181 sv_setiv (sv, (IV)&coroapi); 1978 sv_setiv (sv, (IV)&coroapi);
1182 SvREADONLY_on (sv); 1979 SvREADONLY_on (sv);
1183 } 1980 }
1184} 1981}
1982
1983void
1984_set_current (SV *current)
1985 PROTOTYPE: $
1986 CODE:
1987 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1989
1990void
1991_set_readyhook (SV *hook)
1992 PROTOTYPE: $
1993 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1185 1998
1186int 1999int
1187prio (Coro::State coro, int newprio = 0) 2000prio (Coro::State coro, int newprio = 0)
1188 ALIAS: 2001 ALIAS:
1189 nice = 1 2002 nice = 1
… …
1192 RETVAL = coro->prio; 2005 RETVAL = coro->prio;
1193 2006
1194 if (items > 1) 2007 if (items > 1)
1195 { 2008 {
1196 if (ix) 2009 if (ix)
1197 newprio += coro->prio; 2010 newprio = coro->prio - newprio;
1198 2011
1199 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2012 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2013 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201 2014
1202 coro->prio = newprio; 2015 coro->prio = newprio;
1203 } 2016 }
1204} 2017}
2018 OUTPUT:
2019 RETVAL
1205 2020
1206SV * 2021SV *
1207ready (SV *self) 2022ready (SV *self)
1208 PROTOTYPE: $ 2023 PROTOTYPE: $
1209 CODE: 2024 CODE:
1210 RETVAL = boolSV (api_ready (self)); 2025 RETVAL = boolSV (api_ready (self));
1211 OUTPUT: 2026 OUTPUT:
1212 RETVAL 2027 RETVAL
1213 2028
1214SV *
1215is_ready (SV *self)
1216 PROTOTYPE: $
1217 CODE:
1218 RETVAL = boolSV (api_is_ready (self));
1219 OUTPUT:
1220 RETVAL
1221
1222int 2029int
1223nready (...) 2030nready (...)
1224 PROTOTYPE: 2031 PROTOTYPE:
1225 CODE: 2032 CODE:
1226 RETVAL = coro_nready; 2033 RETVAL = coro_nready;
1227 OUTPUT: 2034 OUTPUT:
1228 RETVAL 2035 RETVAL
1229 2036
2037# for async_pool speedup
1230void 2038void
1231_set_current (SV *current) 2039_pool_1 (SV *cb)
1232 PROTOTYPE: $
1233 CODE: 2040 CODE:
1234 SvREFCNT_dec (SvRV (coro_current)); 2041{
1235 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current);
2044 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av;
2047 int i, len;
2048
2049 if (!invoke)
2050 {
2051 SV *old = PL_diehook;
2052 PL_diehook = 0;
2053 SvREFCNT_dec (old);
2054 croak ("\3async_pool terminate\2\n");
2055 }
2056
2057 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2059
2060 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062
2063 invoke_av = (AV *)SvRV (invoke);
2064 len = av_len (invoke_av);
2065
2066 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2067
2068 if (len > 0)
2069 {
2070 av_fill (defav, len - 1);
2071 for (i = 0; i < len; ++i)
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2073 }
2074
2075 SvREFCNT_dec (invoke);
2076}
2077
2078void
2079_pool_2 (SV *cb)
2080 CODE:
2081{
2082 struct coro *coro = SvSTATE (coro_current);
2083
2084 sv_setsv (cb, &PL_sv_undef);
2085
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0;
2088
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 {
2092 SV *old = PL_diehook;
2093 PL_diehook = 0;
2094 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n");
2096 }
2097
2098 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101
2102 coro->prio = 0;
2103
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0);
2106
2107 av_push (av_async_pool, newSVsv (coro_current));
2108}
2109
2110#if 0
2111
2112void
2113_generator_call (...)
2114 PROTOTYPE: @
2115 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{
2125 struct coro *coro;
2126 MAGIC *mg;
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT:
2154 RETVAL
2155
2156#endif
2157
1236 2158
1237MODULE = Coro::State PACKAGE = Coro::AIO 2159MODULE = Coro::State PACKAGE = Coro::AIO
1238 2160
1239SV * 2161SV *
1240_get_state () 2162_get_state ()
1241 CODE: 2163 CODE:
1242{ 2164{
2165 struct io_state *data;
2166
1243 RETVAL = newSV (sizeof (struct io_state)); 2167 RETVAL = newSV (sizeof (struct io_state));
1244 struct io_state *data = (struct io_state *)SvPVX (RETVAL); 2168 data = (struct io_state *)SvPVX (RETVAL);
1245 SvCUR_set (RETVAL, sizeof (struct io_state)); 2169 SvCUR_set (RETVAL, sizeof (struct io_state));
1246 SvPOK_only (RETVAL); 2170 SvPOK_only (RETVAL);
1247 2171
1248 data->errorno = errno; 2172 data->errorno = errno;
1249 data->laststype = PL_laststype; 2173 data->laststype = PL_laststype;
… …
1264 PL_laststype = data->laststype; 2188 PL_laststype = data->laststype;
1265 PL_laststatval = data->laststatval; 2189 PL_laststatval = data->laststatval;
1266 PL_statcache = data->statcache; 2190 PL_statcache = data->statcache;
1267} 2191}
1268 2192
2193
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195
2196BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198
2199SV *
2200_schedule (...)
2201 PROTOTYPE: @
2202 CODE:
2203{
2204 static int incede;
2205
2206 api_cede_notself ();
2207
2208 ++incede;
2209 while (coro_nready >= incede && api_cede ())
2210 ;
2211
2212 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede)
2214 {
2215 PUSHMARK (SP);
2216 PUTBACK;
2217 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2218 SPAGAIN;
2219 }
2220
2221 --incede;
2222}
2223

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