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Comparing Coro/Coro/State.xs (file contents):
Revision 1.114 by root, Thu Nov 30 21:22:45 2006 UTC vs.
Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13#define PERL_VERSION_ATLEAST(a,b,c) \
14 (PERL_REVISION > (a) \
15 || (PERL_REVISION == (a) \
16 && (PERL_VERSION > (b) \
17 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19#if !PERL_VERSION_ATLEAST (5,6,0)
20# ifndef PL_ppaddr
21# define PL_ppaddr ppaddr
22# endif
23# ifndef call_sv
24# define call_sv perl_call_sv
25# endif
26# ifndef get_sv
27# define get_sv perl_get_sv
28# endif
29# ifndef get_cv
30# define get_cv perl_get_cv
31# endif
32# ifndef IS_PADGV
33# define IS_PADGV(v) 0
34# endif
35# ifndef IS_PADCONST
36# define IS_PADCONST(v) 0
37# endif
38#endif
39 12
40#include <stdio.h> 13#include <stdio.h>
41#include <errno.h> 14#include <errno.h>
15#include <assert.h>
42 16
43#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
44# undef STACKGUARD 18# undef setjmp
45#endif 19# undef longjmp
46 20# undef _exit
47#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
48# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
49#endif 24#endif
50 25
51#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
52# include <unistd.h> 27# include <unistd.h>
53# include <sys/mman.h> 28# include <sys/mman.h>
… …
69#else 44#else
70# define PAGESIZE 0 45# define PAGESIZE 0
71# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
72#endif 47#endif
73 48
74/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
75 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
76 * and should be unique. */ 51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.8.8 */
87#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0
89#endif
90#ifndef newSV
91# define newSV(l) NEWSV(0,l)
92#endif
93
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. */
77#define dSTACKLEVEL int stacklevel 119#define dSTACKLEVEL volatile char stacklevel
78#define STACKLEVEL ((void *)&stacklevel) 120#define STACKLEVEL ((void *)&stacklevel)
79 121
80#define IN_DESTRUCT (PL_main_cv == Nullcv) 122#define IN_DESTRUCT (PL_main_cv == Nullcv)
81 123
82#if __GNUC__ >= 3 124#if __GNUC__ >= 3
83# 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))
84#else 128#else
85# define attribute(x) 129# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr)
86#endif 132#endif
133
134#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1)
87 136
88#define NOINLINE attribute ((noinline)) 137#define NOINLINE attribute ((noinline))
89 138
90#include "CoroAPI.h" 139#include "CoroAPI.h"
91
92#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93 140
94#ifdef USE_ITHREADS 141#ifdef USE_ITHREADS
95static perl_mutex coro_mutex; 142static perl_mutex coro_mutex;
96# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98#else 145#else
99# define LOCK (void)0 146# define LOCK (void)0
100# define UNLOCK (void)0 147# define UNLOCK (void)0
101#endif 148#endif
102 149
150/* helper storage struct for Coro::AIO */
151struct io_state
152{
153 AV *res;
154 int errorno;
155 I32 laststype;
156 int laststatval;
157 Stat_t statcache;
158};
159
160static double (*nvtime)(); /* so why doesn't it take void? */
161
162static size_t coro_stacksize = CORO_STACKSIZE;
103static struct CoroAPI coroapi; 163static struct CoroAPI coroapi;
104static AV *main_mainstack; /* used to differentiate between $main and others */ 164static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env;
105static HV *coro_state_stash, *coro_stash; 166static HV *coro_state_stash, *coro_stash;
106static SV *coro_mortal; /* will be freed after next transfer */ 167static volatile SV *coro_mortal; /* will be freed after next transfer */
168
169static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook;
172static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */
174
175/* async_pool helper stuff */
176static SV *sv_pool_rss;
177static SV *sv_pool_size;
178static AV *av_async_pool;
179
180/* Coro::AnyEvent */
181static SV *sv_activity;
107 182
108static struct coro_cctx *cctx_first; 183static struct coro_cctx *cctx_first;
109static int cctx_count, cctx_idle; 184static int cctx_count, cctx_idle;
185
186enum {
187 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */
192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
193};
110 194
111/* this is a structure representing a c-level coroutine */ 195/* this is a structure representing a c-level coroutine */
112typedef struct coro_cctx { 196typedef struct coro_cctx {
113 struct coro_cctx *next; 197 struct coro_cctx *next;
114 198
115 /* the stack */ 199 /* the stack */
116 void *sptr; 200 void *sptr;
117 long ssize; /* positive == mmap, otherwise malloc */ 201 size_t ssize;
118 202
119 /* cpu state */ 203 /* cpu state */
120 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 204 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
205 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
121 JMPENV *top_env; 206 JMPENV *top_env;
122 coro_context cctx; 207 coro_context cctx;
123 208
124 int inuse;
125
126#if USE_VALGRIND 209#if CORO_USE_VALGRIND
127 int valgrind_id; 210 int valgrind_id;
128#endif 211#endif
212 unsigned char flags;
129} coro_cctx; 213} coro_cctx;
130 214
131enum { 215enum {
132 CF_RUNNING, /* coroutine is running */ 216 CF_RUNNING = 0x0001, /* coroutine is running */
133 CF_READY, /* coroutine is ready */ 217 CF_READY = 0x0002, /* coroutine is ready */
218 CF_NEW = 0x0004, /* has never been switched to */
219 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134}; 220};
221
222/* the structure where most of the perl state is stored, overlaid on the cxstack */
223typedef struct {
224 SV *defsv;
225 AV *defav;
226 SV *errsv;
227 SV *irsgv;
228#define VAR(name,type) type name;
229# include "state.h"
230#undef VAR
231} perl_slots;
232
233#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
135 234
136/* this is a structure representing a perl-level coroutine */ 235/* this is a structure representing a perl-level coroutine */
137struct coro { 236struct coro {
138 /* the c coroutine allocated to this perl coroutine, if any */ 237 /* the c coroutine allocated to this perl coroutine, if any */
139 coro_cctx *cctx; 238 coro_cctx *cctx;
140 239
240 /* process data */
241 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */
243
141 /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
142 AV *args; 245 int refcnt; /* coroutines are refcounted, yes */
143 int refcnt; 246 int flags; /* CF_ flags */
144 int flags; 247 HV *hv; /* the perl hash associated with this coro, if any */
145 248
146 /* optionally saved, might be zero */ 249 /* statistics */
147 AV *defav; 250 int usecount; /* number of transfers to this coro */
148 SV *defsv;
149 SV *errsv;
150
151#define VAR(name,type) type name;
152# include "state.h"
153#undef VAR
154 251
155 /* coro process data */ 252 /* coro process data */
156 int prio; 253 int prio;
254 SV *throw; /* exception to be thrown */
255
256 /* async_pool */
257 SV *saved_deffh;
258
259 /* linked list */
260 struct coro *next, *prev;
157}; 261};
158 262
159typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
160typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
161 265
266/** Coro ********************************************************************/
267
268#define PRIO_MAX 3
269#define PRIO_HIGH 1
270#define PRIO_NORMAL 0
271#define PRIO_LOW -1
272#define PRIO_IDLE -3
273#define PRIO_MIN -4
274
275/* for Coro.pm */
276static SV *coro_current;
277static SV *coro_readyhook;
278static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
279static int coro_nready;
280static struct coro *coro_first;
281
282/** lowlevel stuff **********************************************************/
283
284static SV *
285coro_get_sv (pTHX_ const char *name, int create)
286{
287#if PERL_VERSION_ATLEAST (5,10,0)
288 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
289 get_sv (name, create);
290#endif
291 return get_sv (name, create);
292}
293
162static AV * 294static AV *
295coro_get_av (pTHX_ const char *name, int create)
296{
297#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_av (name, create);
300#endif
301 return get_av (name, create);
302}
303
304static HV *
305coro_get_hv (pTHX_ const char *name, int create)
306{
307#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_hv (name, create);
310#endif
311 return get_hv (name, create);
312}
313
314static AV *
163coro_clone_padlist (CV *cv) 315coro_clone_padlist (pTHX_ CV *cv)
164{ 316{
165 AV *padlist = CvPADLIST (cv); 317 AV *padlist = CvPADLIST (cv);
166 AV *newpadlist, *newpad; 318 AV *newpadlist, *newpad;
167 319
168 newpadlist = newAV (); 320 newpadlist = newAV ();
169 AvREAL_off (newpadlist); 321 AvREAL_off (newpadlist);
170#if PERL_VERSION_ATLEAST (5,9,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
171 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 323 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172#else 324#else
173 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 325 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
174#endif 326#endif
175 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 327 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176 --AvFILLp (padlist); 328 --AvFILLp (padlist);
177 329
178 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 330 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
179 av_store (newpadlist, 1, (SV *)newpad); 331 av_store (newpadlist, 1, (SV *)newpad);
180 332
181 return newpadlist; 333 return newpadlist;
182} 334}
183 335
184static void 336static void
185free_padlist (AV *padlist) 337free_padlist (pTHX_ AV *padlist)
186{ 338{
187 /* may be during global destruction */ 339 /* may be during global destruction */
188 if (SvREFCNT (padlist)) 340 if (SvREFCNT (padlist))
189 { 341 {
190 I32 i = AvFILLp (padlist); 342 I32 i = AvFILLp (padlist);
… …
211 AV *padlist; 363 AV *padlist;
212 AV *av = (AV *)mg->mg_obj; 364 AV *av = (AV *)mg->mg_obj;
213 365
214 /* casting is fun. */ 366 /* casting is fun. */
215 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 367 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
216 free_padlist (padlist); 368 free_padlist (aTHX_ padlist);
217 369
218 SvREFCNT_dec (av); 370 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
219 371
220 return 0; 372 return 0;
221} 373}
222 374
223#define PERL_MAGIC_coro PERL_MAGIC_ext 375#define CORO_MAGIC_type_cv PERL_MAGIC_ext
376#define CORO_MAGIC_type_state PERL_MAGIC_ext
224 377
225static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 378static MGVTBL coro_cv_vtbl = {
379 0, 0, 0, 0,
380 coro_cv_free
381};
226 382
227#define CORO_MAGIC(cv) \ 383#define CORO_MAGIC(sv,type) \
228 SvMAGIC (cv) \ 384 SvMAGIC (sv) \
229 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 385 ? SvMAGIC (sv)->mg_type == type \
230 ? SvMAGIC (cv) \ 386 ? SvMAGIC (sv) \
231 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 387 : mg_find (sv, type) \
232 : 0 388 : 0
389
390#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
391#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
392
393static struct coro *
394SvSTATE_ (pTHX_ SV *coro)
395{
396 HV *stash;
397 MAGIC *mg;
398
399 if (SvROK (coro))
400 coro = SvRV (coro);
401
402 if (expect_false (SvTYPE (coro) != SVt_PVHV))
403 croak ("Coro::State object required");
404
405 stash = SvSTASH (coro);
406 if (expect_false (stash != coro_stash && stash != coro_state_stash))
407 {
408 /* very slow, but rare, check */
409 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
410 croak ("Coro::State object required");
411 }
412
413 mg = CORO_MAGIC_state (coro);
414 return (struct coro *)mg->mg_ptr;
415}
416
417#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
233 418
234/* the next two functions merely cache the padlists */ 419/* the next two functions merely cache the padlists */
235static void 420static void
236get_padlist (CV *cv) 421get_padlist (pTHX_ CV *cv)
237{ 422{
238 MAGIC *mg = CORO_MAGIC (cv); 423 MAGIC *mg = CORO_MAGIC_cv (cv);
239 AV *av; 424 AV *av;
240 425
241 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 426 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
242 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 427 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243 else 428 else
244 { 429 {
245#if 0 430#if CORO_PREFER_PERL_FUNCTIONS
246 /* this is probably cleaner, but also slower? */ 431 /* this is probably cleaner? but also slower! */
432 /* in practise, it seems to be less stable */
247 CV *cp = Perl_cv_clone (cv); 433 CV *cp = Perl_cv_clone (cv);
248 CvPADLIST (cv) = CvPADLIST (cp); 434 CvPADLIST (cv) = CvPADLIST (cp);
249 CvPADLIST (cp) = 0; 435 CvPADLIST (cp) = 0;
250 SvREFCNT_dec (cp); 436 SvREFCNT_dec (cp);
251#else 437#else
252 CvPADLIST (cv) = coro_clone_padlist (cv); 438 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253#endif 439#endif
254 } 440 }
255} 441}
256 442
257static void 443static void
258put_padlist (CV *cv) 444put_padlist (pTHX_ CV *cv)
259{ 445{
260 MAGIC *mg = CORO_MAGIC (cv); 446 MAGIC *mg = CORO_MAGIC_cv (cv);
261 AV *av; 447 AV *av;
262 448
263 if (!mg) 449 if (expect_false (!mg))
264 { 450 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
265 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
266 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
267 mg->mg_virtual = &vtbl_coro;
268 mg->mg_obj = (SV *)newAV ();
269 }
270 451
271 av = (AV *)mg->mg_obj; 452 av = (AV *)mg->mg_obj;
272 453
273 if (AvFILLp (av) >= AvMAX (av)) 454 if (expect_false (AvFILLp (av) >= AvMAX (av)))
274 av_extend (av, AvMAX (av) + 1); 455 av_extend (av, AvMAX (av) + 1);
275 456
276 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 457 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277} 458}
278 459
279#define SB do { 460/** load & save, init *******************************************************/
280#define SE } while (0)
281
282#define LOAD(state) load_state((state));
283#define SAVE(state,flags) save_state((state),(flags));
284
285#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
286 461
287static void 462static void
288load_state(Coro__State c) 463load_perl (pTHX_ Coro__State c)
289{ 464{
465 perl_slots *slot = c->slot;
466 c->slot = 0;
467
468 PL_mainstack = c->mainstack;
469
470 GvSV (PL_defgv) = slot->defsv;
471 GvAV (PL_defgv) = slot->defav;
472 GvSV (PL_errgv) = slot->errsv;
473 GvSV (irsgv) = slot->irsgv;
474
290#define VAR(name,type) PL_ ## name = c->name; 475 #define VAR(name,type) PL_ ## name = slot->name;
291# include "state.h" 476 # include "state.h"
292#undef VAR 477 #undef VAR
293
294 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
297 478
298 { 479 {
299 dSP; 480 dSP;
481
300 CV *cv; 482 CV *cv;
301 483
302 /* now do the ugly restore mess */ 484 /* now do the ugly restore mess */
303 while ((cv = (CV *)POPs)) 485 while (expect_true (cv = (CV *)POPs))
304 { 486 {
305 put_padlist (cv); /* mark this padlist as available */ 487 put_padlist (aTHX_ cv); /* mark this padlist as available */
306 CvDEPTH (cv) = PTR2IV (POPs); 488 CvDEPTH (cv) = PTR2IV (POPs);
307 CvPADLIST (cv) = (AV *)POPs; 489 CvPADLIST (cv) = (AV *)POPs;
308 } 490 }
309 491
310 PUTBACK; 492 PUTBACK;
311 } 493 }
312} 494}
313 495
314static void 496static void
315save_state(Coro__State c, int flags) 497save_perl (pTHX_ Coro__State c)
316{ 498{
317 { 499 {
318 dSP; 500 dSP;
319 I32 cxix = cxstack_ix; 501 I32 cxix = cxstack_ix;
320 PERL_CONTEXT *ccstk = cxstack; 502 PERL_CONTEXT *ccstk = cxstack;
… …
323 /* 505 /*
324 * the worst thing you can imagine happens first - we have to save 506 * the worst thing you can imagine happens first - we have to save
325 * (and reinitialize) all cv's in the whole callchain :( 507 * (and reinitialize) all cv's in the whole callchain :(
326 */ 508 */
327 509
328 PUSHs (Nullsv); 510 XPUSHs (Nullsv);
329 /* this loop was inspired by pp_caller */ 511 /* this loop was inspired by pp_caller */
330 for (;;) 512 for (;;)
331 { 513 {
332 while (cxix >= 0) 514 while (expect_true (cxix >= 0))
333 { 515 {
334 PERL_CONTEXT *cx = &ccstk[cxix--]; 516 PERL_CONTEXT *cx = &ccstk[cxix--];
335 517
336 if (CxTYPE(cx) == CXt_SUB) 518 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
337 { 519 {
338 CV *cv = cx->blk_sub.cv; 520 CV *cv = cx->blk_sub.cv;
339 521
340 if (CvDEPTH (cv)) 522 if (expect_true (CvDEPTH (cv)))
341 { 523 {
342 EXTEND (SP, 3); 524 EXTEND (SP, 3);
343
344 PUSHs ((SV *)CvPADLIST(cv)); 525 PUSHs ((SV *)CvPADLIST (cv));
345 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 526 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
346 PUSHs ((SV *)cv); 527 PUSHs ((SV *)cv);
347 528
348 CvDEPTH (cv) = 0; 529 CvDEPTH (cv) = 0;
349 get_padlist (cv); 530 get_padlist (aTHX_ cv);
350 } 531 }
351 } 532 }
352#ifdef CXt_FORMAT
353 else if (CxTYPE(cx) == CXt_FORMAT)
354 {
355 /* I never used formats, so how should I know how these are implemented? */
356 /* my bold guess is as a simple, plain sub... */
357 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358 }
359#endif
360 } 533 }
361 534
362 if (top_si->si_type == PERLSI_MAIN) 535 if (expect_true (top_si->si_type == PERLSI_MAIN))
363 break; 536 break;
364 537
365 top_si = top_si->si_prev; 538 top_si = top_si->si_prev;
366 ccstk = top_si->si_cxstack; 539 ccstk = top_si->si_cxstack;
367 cxix = top_si->si_cxix; 540 cxix = top_si->si_cxix;
368 } 541 }
369 542
370 PUTBACK; 543 PUTBACK;
371 } 544 }
372 545
373 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 546 /* allocate some space on the context stack for our purposes */
374 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 547 /* we manually unroll here, as usually 2 slots is enough */
375 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 548 if (SLOT_COUNT >= 1) CXINC;
549 if (SLOT_COUNT >= 2) CXINC;
550 if (SLOT_COUNT >= 3) CXINC;
551 {
552 int i;
553 for (i = 3; i < SLOT_COUNT; ++i)
554 CXINC;
555 }
556 cxstack_ix -= SLOT_COUNT; /* undo allocation */
376 557
558 c->mainstack = PL_mainstack;
559
560 {
561 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
562
563 slot->defav = GvAV (PL_defgv);
564 slot->defsv = DEFSV;
565 slot->errsv = ERRSV;
566 slot->irsgv = GvSV (irsgv);
567
377#define VAR(name,type)c->name = PL_ ## name; 568 #define VAR(name,type) slot->name = PL_ ## name;
378# include "state.h" 569 # include "state.h"
379#undef VAR 570 #undef VAR
571 }
380} 572}
381 573
382/* 574/*
383 * allocate various perl stacks. This is an exact copy 575 * allocate various perl stacks. This is an exact copy
384 * of perl.c:init_stacks, except that it uses less memory 576 * of perl.c:init_stacks, except that it uses less memory
385 * on the (sometimes correct) assumption that coroutines do 577 * on the (sometimes correct) assumption that coroutines do
386 * not usually need a lot of stackspace. 578 * not usually need a lot of stackspace.
387 */ 579 */
580#if CORO_PREFER_PERL_FUNCTIONS
581# define coro_init_stacks init_stacks
582#else
388static void 583static void
389coro_init_stacks () 584coro_init_stacks (pTHX)
390{ 585{
391 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 586 PL_curstackinfo = new_stackinfo(32, 8);
392 PL_curstackinfo->si_type = PERLSI_MAIN; 587 PL_curstackinfo->si_type = PERLSI_MAIN;
393 PL_curstack = PL_curstackinfo->si_stack; 588 PL_curstack = PL_curstackinfo->si_stack;
394 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 589 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395 590
396 PL_stack_base = AvARRAY(PL_curstack); 591 PL_stack_base = AvARRAY(PL_curstack);
397 PL_stack_sp = PL_stack_base; 592 PL_stack_sp = PL_stack_base;
398 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 593 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399 594
400 New(50,PL_tmps_stack,96,SV*); 595 New(50,PL_tmps_stack,32,SV*);
401 PL_tmps_floor = -1; 596 PL_tmps_floor = -1;
402 PL_tmps_ix = -1; 597 PL_tmps_ix = -1;
403 PL_tmps_max = 96; 598 PL_tmps_max = 32;
404 599
405 New(54,PL_markstack,16,I32); 600 New(54,PL_markstack,16,I32);
406 PL_markstack_ptr = PL_markstack; 601 PL_markstack_ptr = PL_markstack;
407 PL_markstack_max = PL_markstack + 16; 602 PL_markstack_max = PL_markstack + 16;
408 603
409#ifdef SET_MARK_OFFSET 604#ifdef SET_MARK_OFFSET
410 SET_MARK_OFFSET; 605 SET_MARK_OFFSET;
411#endif 606#endif
412 607
413 New(54,PL_scopestack,16,I32); 608 New(54,PL_scopestack,8,I32);
414 PL_scopestack_ix = 0; 609 PL_scopestack_ix = 0;
415 PL_scopestack_max = 16; 610 PL_scopestack_max = 8;
416 611
417 New(54,PL_savestack,96,ANY); 612 New(54,PL_savestack,24,ANY);
418 PL_savestack_ix = 0; 613 PL_savestack_ix = 0;
419 PL_savestack_max = 96; 614 PL_savestack_max = 24;
420 615
421#if !PERL_VERSION_ATLEAST (5,9,0) 616#if !PERL_VERSION_ATLEAST (5,10,0)
422 New(54,PL_retstack,8,OP*); 617 New(54,PL_retstack,4,OP*);
423 PL_retstack_ix = 0; 618 PL_retstack_ix = 0;
424 PL_retstack_max = 8; 619 PL_retstack_max = 4;
425#endif 620#endif
426} 621}
622#endif
427 623
428/* 624/*
429 * destroy the stacks, the callchain etc... 625 * destroy the stacks, the callchain etc...
430 */ 626 */
431static void 627static void
432coro_destroy_stacks () 628coro_destroy_stacks (pTHX)
433{ 629{
434 if (!IN_DESTRUCT)
435 {
436 /* is this ugly, I ask? */
437 LEAVE_SCOPE (0);
438
439 /* sure it is, but more important: is it correct?? :/ */
440 FREETMPS;
441
442 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
443 }
444
445 while (PL_curstackinfo->si_next) 630 while (PL_curstackinfo->si_next)
446 PL_curstackinfo = PL_curstackinfo->si_next; 631 PL_curstackinfo = PL_curstackinfo->si_next;
447 632
448 while (PL_curstackinfo) 633 while (PL_curstackinfo)
449 { 634 {
450 PERL_SI *p = PL_curstackinfo->si_prev; 635 PERL_SI *p = PL_curstackinfo->si_prev;
451 636
452 { /*D*//*remove*/
453 dSP;
454 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455 PUTBACK; /* possibly superfluous */
456 }
457
458 if (!IN_DESTRUCT) 637 if (!IN_DESTRUCT)
459 {
460 dounwind (-1);/*D*//*remove*/
461 SvREFCNT_dec (PL_curstackinfo->si_stack); 638 SvREFCNT_dec (PL_curstackinfo->si_stack);
462 }
463 639
464 Safefree (PL_curstackinfo->si_cxstack); 640 Safefree (PL_curstackinfo->si_cxstack);
465 Safefree (PL_curstackinfo); 641 Safefree (PL_curstackinfo);
466 PL_curstackinfo = p; 642 PL_curstackinfo = p;
467 } 643 }
468 644
469 Safefree (PL_tmps_stack); 645 Safefree (PL_tmps_stack);
470 Safefree (PL_markstack); 646 Safefree (PL_markstack);
471 Safefree (PL_scopestack); 647 Safefree (PL_scopestack);
472 Safefree (PL_savestack); 648 Safefree (PL_savestack);
473#if !PERL_VERSION_ATLEAST (5,9,0) 649#if !PERL_VERSION_ATLEAST (5,10,0)
474 Safefree (PL_retstack); 650 Safefree (PL_retstack);
475#endif 651#endif
476} 652}
477 653
654static size_t
655coro_rss (pTHX_ struct coro *coro)
656{
657 size_t rss = sizeof (*coro);
658
659 if (coro->mainstack)
660 {
661 perl_slots tmp_slot;
662 perl_slots *slot;
663
664 if (coro->flags & CF_RUNNING)
665 {
666 slot = &tmp_slot;
667
668 #define VAR(name,type) slot->name = PL_ ## name;
669 # include "state.h"
670 #undef VAR
671 }
672 else
673 slot = coro->slot;
674
675 if (slot)
676 {
677 rss += sizeof (slot->curstackinfo);
678 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
679 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
680 rss += slot->tmps_max * sizeof (SV *);
681 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
682 rss += slot->scopestack_max * sizeof (I32);
683 rss += slot->savestack_max * sizeof (ANY);
684
685#if !PERL_VERSION_ATLEAST (5,10,0)
686 rss += slot->retstack_max * sizeof (OP *);
687#endif
688 }
689 }
690
691 return rss;
692}
693
694/** coroutine stack handling ************************************************/
695
696static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
697static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
698static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
699
700/* apparently < 5.8.8 */
701#ifndef MgPV_nolen_const
702#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
703 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
704 (const char*)(mg)->mg_ptr)
705#endif
706
707/*
708 * This overrides the default magic get method of %SIG elements.
709 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
710 * and instead of tryign to save and restore the hash elements, we just provide
711 * readback here.
712 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
713 * not expecting this to actually change the hook. This is a potential problem
714 * when a schedule happens then, but we ignore this.
715 */
716static int
717coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
718{
719 const char *s = MgPV_nolen_const (mg);
720
721 if (*s == '_')
722 {
723 SV **svp = 0;
724
725 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
726 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
727
728 if (svp)
729 {
730 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
731 return 0;
732 }
733 }
734
735 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
736}
737
738static int
739coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
740{
741 const char *s = MgPV_nolen_const (mg);
742
743 if (*s == '_')
744 {
745 SV **svp = 0;
746
747 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
748 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
749
750 if (svp)
751 {
752 SV *old = *svp;
753 *svp = 0;
754 SvREFCNT_dec (old);
755 return 0;
756 }
757 }
758
759 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
760}
761
762static int
763coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
764{
765 const char *s = MgPV_nolen_const (mg);
766
767 if (*s == '_')
768 {
769 SV **svp = 0;
770
771 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
772 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
773
774 if (svp)
775 {
776 SV *old = *svp;
777 *svp = newSVsv (sv);
778 SvREFCNT_dec (old);
779 return 0;
780 }
781 }
782
783 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
784}
785
478static void 786static void
479setup_coro (struct coro *coro) 787coro_setup (pTHX_ struct coro *coro)
480{ 788{
481 /* 789 /*
482 * emulate part of the perl startup here. 790 * emulate part of the perl startup here.
483 */ 791 */
484
485 coro_init_stacks (); 792 coro_init_stacks (aTHX);
486 793
794 PL_runops = RUNOPS_DEFAULT;
795 PL_curcop = &PL_compiling;
796 PL_in_eval = EVAL_NULL;
487 PL_curcop = 0; 797 PL_comppad = 0;
488 PL_in_eval = 0;
489 PL_curpm = 0; 798 PL_curpm = 0;
799 PL_curpad = 0;
800 PL_localizing = 0;
801 PL_dirty = 0;
802 PL_restartop = 0;
803#if PERL_VERSION_ATLEAST (5,10,0)
804 PL_parser = 0;
805#endif
806
807 /* recreate the die/warn hooks */
808 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
809 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
810
811 GvSV (PL_defgv) = newSV (0);
812 GvAV (PL_defgv) = coro->args; coro->args = 0;
813 GvSV (PL_errgv) = newSV (0);
814 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
815 PL_rs = newSVsv (GvSV (irsgv));
816 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
490 817
491 { 818 {
492 dSP; 819 dSP;
493 LOGOP myop; 820 LOGOP myop;
494 821
495 /* I have no idea why this is needed, but it is */
496 PUSHMARK (SP);
497
498 SvREFCNT_dec (GvAV (PL_defgv));
499 GvAV (PL_defgv) = coro->args; coro->args = 0;
500
501 Zero (&myop, 1, LOGOP); 822 Zero (&myop, 1, LOGOP);
502 myop.op_next = Nullop; 823 myop.op_next = Nullop;
503 myop.op_flags = OPf_WANT_VOID; 824 myop.op_flags = OPf_WANT_VOID;
504 825
826 PUSHMARK (SP);
827 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
828 PUTBACK;
505 PL_op = (OP *)&myop; 829 PL_op = (OP *)&myop;
506
507 PUSHMARK (SP);
508 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509 PUTBACK;
510 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 830 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511 SPAGAIN; 831 SPAGAIN;
512
513 ENTER; /* necessary e.g. for dounwind */
514 } 832 }
833
834 /* this newly created coroutine might be run on an existing cctx which most
835 * likely was suspended in set_stacklevel, called from entersub.
836 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
837 * so we ENTER here for symmetry
838 */
839 ENTER;
515} 840}
516 841
517static void 842static void
843coro_destroy (pTHX_ struct coro *coro)
844{
845 if (!IN_DESTRUCT)
846 {
847 /* restore all saved variables and stuff */
848 LEAVE_SCOPE (0);
849 assert (PL_tmps_floor == -1);
850
851 /* free all temporaries */
852 FREETMPS;
853 assert (PL_tmps_ix == -1);
854
855 /* unwind all extra stacks */
856 POPSTACK_TO (PL_mainstack);
857
858 /* unwind main stack */
859 dounwind (-1);
860 }
861
862 SvREFCNT_dec (GvSV (PL_defgv));
863 SvREFCNT_dec (GvAV (PL_defgv));
864 SvREFCNT_dec (GvSV (PL_errgv));
865 SvREFCNT_dec (PL_defoutgv);
866 SvREFCNT_dec (PL_rs);
867 SvREFCNT_dec (GvSV (irsgv));
868
869 SvREFCNT_dec (PL_diehook);
870 SvREFCNT_dec (PL_warnhook);
871
872 SvREFCNT_dec (coro->saved_deffh);
873 SvREFCNT_dec (coro->throw);
874
875 coro_destroy_stacks (aTHX);
876}
877
878static void
518free_coro_mortal () 879free_coro_mortal (pTHX)
519{ 880{
520 if (coro_mortal) 881 if (expect_true (coro_mortal))
521 { 882 {
522 SvREFCNT_dec (coro_mortal); 883 SvREFCNT_dec (coro_mortal);
523 coro_mortal = 0; 884 coro_mortal = 0;
524 } 885 }
525} 886}
526 887
888static int
889runops_trace (pTHX)
890{
891 COP *oldcop = 0;
892 int oldcxix = -2;
893 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
894 coro_cctx *cctx = coro->cctx;
895
896 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
897 {
898 PERL_ASYNC_CHECK ();
899
900 if (cctx->flags & CC_TRACE_ALL)
901 {
902 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
903 {
904 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
905 SV **bot, **top;
906 AV *av = newAV (); /* return values */
907 SV **cb;
908 dSP;
909
910 GV *gv = CvGV (cx->blk_sub.cv);
911 SV *fullname = sv_2mortal (newSV (0));
912 if (isGV (gv))
913 gv_efullname3 (fullname, gv, 0);
914
915 bot = PL_stack_base + cx->blk_oldsp + 1;
916 top = cx->blk_gimme == G_ARRAY ? SP + 1
917 : cx->blk_gimme == G_SCALAR ? bot + 1
918 : bot;
919
920 av_extend (av, top - bot);
921 while (bot < top)
922 av_push (av, SvREFCNT_inc_NN (*bot++));
923
924 PL_runops = RUNOPS_DEFAULT;
925 ENTER;
926 SAVETMPS;
927 EXTEND (SP, 3);
928 PUSHMARK (SP);
929 PUSHs (&PL_sv_no);
930 PUSHs (fullname);
931 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
932 PUTBACK;
933 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
934 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
935 SPAGAIN;
936 FREETMPS;
937 LEAVE;
938 PL_runops = runops_trace;
939 }
940
941 if (oldcop != PL_curcop)
942 {
943 oldcop = PL_curcop;
944
945 if (PL_curcop != &PL_compiling)
946 {
947 SV **cb;
948
949 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
950 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952
953 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
954 {
955 runops_proc_t old_runops = PL_runops;
956 dSP;
957 GV *gv = CvGV (cx->blk_sub.cv);
958 SV *fullname = sv_2mortal (newSV (0));
959
960 if (isGV (gv))
961 gv_efullname3 (fullname, gv, 0);
962
963 PL_runops = RUNOPS_DEFAULT;
964 ENTER;
965 SAVETMPS;
966 EXTEND (SP, 3);
967 PUSHMARK (SP);
968 PUSHs (&PL_sv_yes);
969 PUSHs (fullname);
970 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
971 PUTBACK;
972 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
973 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
974 SPAGAIN;
975 FREETMPS;
976 LEAVE;
977 PL_runops = runops_trace;
978 }
979
980 oldcxix = cxstack_ix;
981 }
982
983 if (cctx->flags & CC_TRACE_LINE)
984 {
985 dSP;
986
987 PL_runops = RUNOPS_DEFAULT;
988 ENTER;
989 SAVETMPS;
990 EXTEND (SP, 3);
991 PL_runops = RUNOPS_DEFAULT;
992 PUSHMARK (SP);
993 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
994 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
995 PUTBACK;
996 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
997 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
998 SPAGAIN;
999 FREETMPS;
1000 LEAVE;
1001 PL_runops = runops_trace;
1002 }
1003 }
1004 }
1005 }
1006 }
1007
1008 TAINT_NOT;
1009 return 0;
1010}
1011
1012/* inject a fake call to Coro::State::_cctx_init into the execution */
1013/* _cctx_init should be careful, as it could be called at almost any time */
1014/* during execution of a perl program */
527static void NOINLINE 1015static void NOINLINE
528prepare_cctx (coro_cctx *cctx) 1016cctx_prepare (pTHX_ coro_cctx *cctx)
529{ 1017{
530 dSP; 1018 dSP;
531 LOGOP myop; 1019 LOGOP myop;
532 1020
1021 PL_top_env = &PL_start_env;
1022
1023 if (cctx->flags & CC_TRACE)
1024 PL_runops = runops_trace;
1025
533 Zero (&myop, 1, LOGOP); 1026 Zero (&myop, 1, LOGOP);
534 myop.op_next = PL_op; 1027 myop.op_next = PL_op;
535 myop.op_flags = OPf_WANT_VOID; 1028 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
536
537 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538 1029
539 PUSHMARK (SP); 1030 PUSHMARK (SP);
1031 EXTEND (SP, 2);
1032 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1033 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541 PUTBACK; 1034 PUTBACK;
1035 PL_op = (OP *)&myop;
542 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543 SPAGAIN; 1037 SPAGAIN;
544} 1038}
545 1039
1040/*
1041 * this is a _very_ stripped down perl interpreter ;)
1042 */
546static void 1043static void
547coro_run (void *arg) 1044cctx_run (void *arg)
548{ 1045{
1046 dTHX;
1047
549 /* coro_run is the alternative epilogue of transfer() */ 1048 /* cctx_run is the alternative tail of transfer(), so unlock here. */
550 UNLOCK; 1049 UNLOCK;
551 1050
1051 /* we now skip the entersub that lead to transfer() */
1052 PL_op = PL_op->op_next;
1053
1054 /* inject a fake subroutine call to cctx_init */
1055 cctx_prepare (aTHX_ (coro_cctx *)arg);
1056
1057 /* somebody or something will hit me for both perl_run and PL_restartop */
1058 PL_restartop = PL_op;
1059 perl_run (PL_curinterp);
1060
552 /* 1061 /*
553 * this is a _very_ stripped down perl interpreter ;) 1062 * If perl-run returns we assume exit() was being called or the coro
1063 * fell off the end, which seems to be the only valid (non-bug)
1064 * reason for perl_run to return. We try to exit by jumping to the
1065 * bootstrap-time "top" top_env, as we cannot restore the "main"
1066 * coroutine as Coro has no such concept
554 */ 1067 */
555 PL_top_env = &PL_start_env; 1068 PL_top_env = main_top_env;
556 1069 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557 /* inject call to cctx_init */
558 prepare_cctx ((coro_cctx *)arg);
559
560 /* somebody will hit me for both perl_run and PL_restartop */
561 perl_run (PL_curinterp);
562
563 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564 abort ();
565} 1070}
566 1071
567static coro_cctx * 1072static coro_cctx *
568cctx_new () 1073cctx_new ()
569{ 1074{
570 coro_cctx *cctx; 1075 coro_cctx *cctx;
1076 void *stack_start;
1077 size_t stack_size;
571 1078
572 ++cctx_count; 1079 ++cctx_count;
573 1080
574 New (0, cctx, 1, coro_cctx); 1081 Newz (0, cctx, 1, coro_cctx);
575 1082
576#if HAVE_MMAP 1083#if HAVE_MMAP
577
578 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1084 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579 /* mmap suppsedly does allocate-on-write for us */ 1085 /* mmap supposedly does allocate-on-write for us */
580 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1086 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
581 1087
582 if (cctx->sptr == (void *)-1) 1088 if (cctx->sptr != (void *)-1)
583 {
584 perror ("FATAL: unable to mmap stack for coroutine");
585 _exit (EXIT_FAILURE);
586 } 1089 {
587
588# if STACKGUARD 1090# if CORO_STACKGUARD
589 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1091 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590# endif 1092# endif
1093 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1094 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1095 cctx->flags |= CC_MAPPED;
1096 }
1097 else
1098#endif
1099 {
1100 cctx->ssize = coro_stacksize * (long)sizeof (long);
1101 New (0, cctx->sptr, coro_stacksize, long);
591 1102
592#else
593
594 cctx->ssize = STACKSIZE * (long)sizeof (long);
595 New (0, cctx->sptr, STACKSIZE, long);
596
597 if (!cctx->sptr) 1103 if (!cctx->sptr)
598 { 1104 {
599 perror ("FATAL: unable to malloc stack for coroutine"); 1105 perror ("FATAL: unable to allocate stack for coroutine");
600 _exit (EXIT_FAILURE); 1106 _exit (EXIT_FAILURE);
601 } 1107 }
602 1108
603#endif 1109 stack_start = cctx->sptr;
1110 stack_size = cctx->ssize;
1111 }
604 1112
605#if USE_VALGRIND 1113 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
606 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1114 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
607 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608 cctx->ssize + (char *)cctx->sptr
609 );
610#endif
611
612 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
613 1115
614 return cctx; 1116 return cctx;
615} 1117}
616 1118
617static void 1119static void
618cctx_free (coro_cctx *cctx) 1120cctx_destroy (coro_cctx *cctx)
619{ 1121{
620 if (!cctx) 1122 if (!cctx)
621 return; 1123 return;
622 1124
623 --cctx_count; 1125 --cctx_count;
624 1126
625#if USE_VALGRIND 1127#if CORO_USE_VALGRIND
626 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1128 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627#endif 1129#endif
628 1130
629#if HAVE_MMAP 1131#if HAVE_MMAP
1132 if (cctx->flags & CC_MAPPED)
630 munmap (cctx->sptr, cctx->ssize); 1133 munmap (cctx->sptr, cctx->ssize);
631#else 1134 else
1135#endif
632 Safefree (cctx->sptr); 1136 Safefree (cctx->sptr);
633#endif
634 1137
635 Safefree (cctx); 1138 Safefree (cctx);
636} 1139}
637 1140
1141/* wether this cctx should be destructed */
1142#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1143
638static coro_cctx * 1144static coro_cctx *
639cctx_get () 1145cctx_get (pTHX)
640{ 1146{
641 coro_cctx *cctx; 1147 while (expect_true (cctx_first))
642
643 if (cctx_first)
644 { 1148 {
1149 coro_cctx *cctx = cctx_first;
1150 cctx_first = cctx->next;
645 --cctx_idle; 1151 --cctx_idle;
646 cctx = cctx_first; 1152
647 cctx_first = cctx->next; 1153 if (expect_true (!CCTX_EXPIRED (cctx)))
648 } 1154 return cctx;
649 else 1155
650 { 1156 cctx_destroy (cctx);
651 cctx = cctx_new ();
652 PL_op = PL_op->op_next;
653 } 1157 }
654 1158
655 return cctx; 1159 return cctx_new ();
656} 1160}
657 1161
658static void 1162static void
659cctx_put (coro_cctx *cctx) 1163cctx_put (coro_cctx *cctx)
660{ 1164{
1165 /* free another cctx if overlimit */
1166 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
1167 {
1168 coro_cctx *first = cctx_first;
1169 cctx_first = first->next;
1170 --cctx_idle;
1171
1172 cctx_destroy (first);
1173 }
1174
661 ++cctx_idle; 1175 ++cctx_idle;
662 cctx->next = cctx_first; 1176 cctx->next = cctx_first;
663 cctx_first = cctx; 1177 cctx_first = cctx;
664} 1178}
665 1179
666/* never call directly, always through the coro_state_transfer global variable */ 1180/** coroutine switching *****************************************************/
1181
1182static void
1183transfer_check (pTHX_ struct coro *prev, struct coro *next)
1184{
1185 if (expect_true (prev != next))
1186 {
1187 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1188 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1189
1190 if (expect_false (next->flags & CF_RUNNING))
1191 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1192
1193 if (expect_false (next->flags & CF_DESTROYED))
1194 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1195
1196#if !PERL_VERSION_ATLEAST (5,10,0)
1197 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1198 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1199#endif
1200 }
1201}
1202
1203/* always use the TRANSFER macro */
667static void NOINLINE 1204static void NOINLINE
668transfer (struct coro *prev, struct coro *next, int flags) 1205transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
669{ 1206{
670 dSTACKLEVEL; 1207 dSTACKLEVEL;
1208 static volatile int has_throw;
671 1209
672 /* sometimes transfer is only called to set idle_sp */ 1210 /* sometimes transfer is only called to set idle_sp */
673 if (flags == TRANSFER_SET_STACKLEVEL) 1211 if (expect_false (!next))
1212 {
674 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1213 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1214 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1215 }
675 else if (prev != next) 1216 else if (expect_true (prev != next))
676 { 1217 {
677 coro_cctx *prev__cctx; 1218 coro_cctx *prev__cctx;
678 1219
679 if (!prev->cctx) 1220 if (expect_false (prev->flags & CF_NEW))
680 { 1221 {
681 /* create a new empty context */ 1222 /* create a new empty context */
682 Newz (0, prev->cctx, 1, coro_cctx); 1223 Newz (0, prev->cctx, 1, coro_cctx);
683 prev->cctx->inuse = 1; 1224 prev->flags &= ~CF_NEW;
684 prev->flags |= CF_RUNNING; 1225 prev->flags |= CF_RUNNING;
685 } 1226 }
686
687 if (!prev->flags & CF_RUNNING)
688 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689
690 if (next->flags & CF_RUNNING)
691 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
692 1227
693 prev->flags &= ~CF_RUNNING; 1228 prev->flags &= ~CF_RUNNING;
694 next->flags |= CF_RUNNING; 1229 next->flags |= CF_RUNNING;
695 1230
696 LOCK; 1231 LOCK;
697 1232
698 if (next->mainstack) 1233 /* first get rid of the old state */
1234 save_perl (aTHX_ prev);
1235
1236 if (expect_false (next->flags & CF_NEW))
699 { 1237 {
700 /* coroutine already started */ 1238 /* need to start coroutine */
701 SAVE (prev, flags); 1239 next->flags &= ~CF_NEW;
702 LOAD (next); 1240 /* setup coroutine call */
1241 coro_setup (aTHX_ next);
703 } 1242 }
704 else 1243 else
705 { 1244 load_perl (aTHX_ next);
706 /* need to start coroutine */
707 /* first get rid of the old state */
708 SAVE (prev, -1);
709 /* setup coroutine call */
710 setup_coro (next);
711 /* need a new stack */
712 assert (!next->stack);
713 }
714 1245
715 prev__cctx = prev->cctx; 1246 prev__cctx = prev->cctx;
716 1247
717 /* possibly "free" the cctx */ 1248 /* possibly "free" the cctx */
1249 if (expect_true (
718 if (prev__cctx->idle_sp == STACKLEVEL) 1250 prev__cctx->idle_sp == STACKLEVEL
1251 && !(prev__cctx->flags & CC_TRACE)
1252 && !force_cctx
1253 ))
719 { 1254 {
720 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1255 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
721 assert (PL_top_env == prev__cctx->top_env); 1256 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1257
1258 prev->cctx = 0;
1259
1260 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1261 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1262 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1263 if (!next->cctx)
1264 next->cctx = cctx_get (aTHX);
722 1265
723 cctx_put (prev__cctx); 1266 cctx_put (prev__cctx);
724 prev->cctx = 0;
725 } 1267 }
726 1268
1269 ++next->usecount;
1270
727 if (!next->cctx) 1271 if (expect_true (!next->cctx))
728 next->cctx = cctx_get (); 1272 next->cctx = cctx_get (aTHX);
729 1273
1274 has_throw = !!next->throw;
1275
730 if (prev__cctx != next->cctx) 1276 if (expect_false (prev__cctx != next->cctx))
731 { 1277 {
732 assert ( prev__cctx->inuse);
733 assert (!next->cctx->inuse);
734
735 prev__cctx->inuse = 0;
736 next->cctx->inuse = 1;
737
738 prev__cctx->top_env = PL_top_env; 1278 prev__cctx->top_env = PL_top_env;
739 PL_top_env = next->cctx->top_env; 1279 PL_top_env = next->cctx->top_env;
740 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1280 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
741 } 1281 }
742 1282
743 free_coro_mortal (); 1283 free_coro_mortal (aTHX);
744
745 UNLOCK; 1284 UNLOCK;
1285
1286 if (expect_false (has_throw))
1287 {
1288 struct coro *coro = SvSTATE (coro_current);
1289
1290 if (coro->throw)
1291 {
1292 SV *exception = coro->throw;
1293 coro->throw = 0;
1294 sv_setsv (ERRSV, exception);
1295 croak (0);
1296 }
1297 }
746 } 1298 }
747} 1299}
748 1300
749struct transfer_args 1301struct transfer_args
750{ 1302{
751 struct coro *prev, *next; 1303 struct coro *prev, *next;
752 int flags;
753}; 1304};
754 1305
1306#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
755#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1307#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
756 1308
1309/** high level stuff ********************************************************/
1310
757static void 1311static int
758coro_state_destroy (struct coro *coro) 1312coro_state_destroy (pTHX_ struct coro *coro)
759{ 1313{
760 if (coro->refcnt--) 1314 if (coro->flags & CF_DESTROYED)
761 return; 1315 return 0;
762 1316
1317 coro->flags |= CF_DESTROYED;
1318
763 if (coro->flags & CF_RUNNING) 1319 if (coro->flags & CF_READY)
764 croak ("FATAL: tried to destroy currently running coroutine"); 1320 {
1321 /* reduce nready, as destroying a ready coro effectively unreadies it */
1322 /* alternative: look through all ready queues and remove the coro */
1323 LOCK;
1324 --coro_nready;
1325 UNLOCK;
1326 }
1327 else
1328 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
765 1329
766 if (coro->mainstack && coro->mainstack != main_mainstack) 1330 if (coro->mainstack && coro->mainstack != main_mainstack)
767 { 1331 {
768 struct coro temp; 1332 struct coro temp;
769 1333
770 SAVE ((&temp), TRANSFER_SAVE_ALL); 1334 if (coro->flags & CF_RUNNING)
771 LOAD (coro); 1335 croak ("FATAL: tried to destroy currently running coroutine");
772 1336
773 coro_destroy_stacks (); 1337 save_perl (aTHX_ &temp);
1338 load_perl (aTHX_ coro);
774 1339
775 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1340 coro_destroy (aTHX_ coro);
776 1341
1342 load_perl (aTHX_ &temp);
1343
777 coro->mainstack = 0; 1344 coro->slot = 0;
778 } 1345 }
779 1346
780 cctx_free (coro->cctx); 1347 cctx_destroy (coro->cctx);
781 SvREFCNT_dec (coro->args); 1348 SvREFCNT_dec (coro->args);
782 Safefree (coro); 1349
1350 if (coro->next) coro->next->prev = coro->prev;
1351 if (coro->prev) coro->prev->next = coro->next;
1352 if (coro == coro_first) coro_first = coro->next;
1353
1354 return 1;
783} 1355}
784 1356
785static int 1357static int
786coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1358coro_state_free (pTHX_ SV *sv, MAGIC *mg)
787{ 1359{
788 struct coro *coro = (struct coro *)mg->mg_ptr; 1360 struct coro *coro = (struct coro *)mg->mg_ptr;
789 mg->mg_ptr = 0; 1361 mg->mg_ptr = 0;
790 1362
1363 coro->hv = 0;
1364
1365 if (--coro->refcnt < 0)
1366 {
791 coro_state_destroy (coro); 1367 coro_state_destroy (aTHX_ coro);
1368 Safefree (coro);
1369 }
792 1370
793 return 0; 1371 return 0;
794} 1372}
795 1373
796static int 1374static int
… …
803 return 0; 1381 return 0;
804} 1382}
805 1383
806static MGVTBL coro_state_vtbl = { 1384static MGVTBL coro_state_vtbl = {
807 0, 0, 0, 0, 1385 0, 0, 0, 0,
808 coro_state_clear, 1386 coro_state_free,
809 0, 1387 0,
810#ifdef MGf_DUP 1388#ifdef MGf_DUP
811 coro_state_dup, 1389 coro_state_dup,
812#else 1390#else
813# define MGf_DUP 0 1391# define MGf_DUP 0
814#endif 1392#endif
815}; 1393};
816 1394
817static struct coro *
818SvSTATE (SV *coro)
819{
820 HV *stash;
821 MAGIC *mg;
822
823 if (SvROK (coro))
824 coro = SvRV (coro);
825
826 stash = SvSTASH (coro);
827 if (stash != coro_stash && stash != coro_state_stash)
828 {
829 /* very slow, but rare, check */
830 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
831 croak ("Coro::State object required");
832 }
833
834 mg = SvMAGIC (coro);
835 assert (mg->mg_type == PERL_MAGIC_ext);
836 return (struct coro *)mg->mg_ptr;
837}
838
839static void 1395static void
840prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1396prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
841{ 1397{
842 ta->prev = SvSTATE (prev); 1398 ta->prev = SvSTATE (prev_sv);
843 ta->next = SvSTATE (next); 1399 ta->next = SvSTATE (next_sv);
844 ta->flags = flags; 1400 TRANSFER_CHECK (*ta);
845} 1401}
846 1402
847static void 1403static void
848api_transfer (SV *prev, SV *next, int flags) 1404api_transfer (SV *prev_sv, SV *next_sv)
849{ 1405{
850 dTHX; 1406 dTHX;
851 struct transfer_args ta; 1407 struct transfer_args ta;
852 1408
853 prepare_transfer (&ta, prev, next, flags); 1409 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
854 TRANSFER (ta); 1410 TRANSFER (ta, 1);
855} 1411}
856 1412
857/** Coro ********************************************************************/ 1413/** Coro ********************************************************************/
858 1414
859#define PRIO_MAX 3
860#define PRIO_HIGH 1
861#define PRIO_NORMAL 0
862#define PRIO_LOW -1
863#define PRIO_IDLE -3
864#define PRIO_MIN -4
865
866/* for Coro.pm */
867static GV *coro_current, *coro_idle;
868static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
869static int coro_nready;
870
871static void 1415static void
872coro_enq (SV *coro_sv) 1416coro_enq (pTHX_ SV *coro_sv)
873{ 1417{
874 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1418 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
875 coro_nready++;
876} 1419}
877 1420
878static SV * 1421static SV *
879coro_deq (int min_prio) 1422coro_deq (pTHX)
880{ 1423{
881 int prio = PRIO_MAX - PRIO_MIN; 1424 int prio;
882 1425
883 min_prio -= PRIO_MIN;
884 if (min_prio < 0)
885 min_prio = 0;
886
887 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1426 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
888 if (AvFILLp (coro_ready [prio]) >= 0) 1427 if (AvFILLp (coro_ready [prio]) >= 0)
889 {
890 coro_nready--;
891 return av_shift (coro_ready [prio]); 1428 return av_shift (coro_ready [prio]);
892 }
893 1429
894 return 0; 1430 return 0;
895} 1431}
896 1432
897static int 1433static int
898api_ready (SV *coro_sv) 1434api_ready (SV *coro_sv)
899{ 1435{
1436 dTHX;
900 struct coro *coro; 1437 struct coro *coro;
1438 SV *sv_hook;
1439 void (*xs_hook)(void);
901 1440
902 if (SvROK (coro_sv)) 1441 if (SvROK (coro_sv))
903 coro_sv = SvRV (coro_sv); 1442 coro_sv = SvRV (coro_sv);
904 1443
905 coro = SvSTATE (coro_sv); 1444 coro = SvSTATE (coro_sv);
906 1445
907 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
908 return 0; 1447 return 0;
909 1448
910 if (coro->flags & CF_RUNNING)
911 croak ("Coro::ready called on currently running coroutine");
912
913 coro->flags |= CF_READY; 1449 coro->flags |= CF_READY;
914 1450
915 LOCK; 1451 LOCK;
1452
1453 sv_hook = coro_nready ? 0 : coro_readyhook;
1454 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1455
916 coro_enq (SvREFCNT_inc (coro_sv)); 1456 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1457 ++coro_nready;
1458
917 UNLOCK; 1459 UNLOCK;
1460
1461 if (sv_hook)
1462 {
1463 dSP;
1464
1465 ENTER;
1466 SAVETMPS;
1467
1468 PUSHMARK (SP);
1469 PUTBACK;
1470 call_sv (sv_hook, G_DISCARD);
1471 SPAGAIN;
1472
1473 FREETMPS;
1474 LEAVE;
1475 }
1476
1477 if (xs_hook)
1478 xs_hook ();
918 1479
919 return 1; 1480 return 1;
920} 1481}
921 1482
922static int 1483static int
923api_is_ready (SV *coro_sv) 1484api_is_ready (SV *coro_sv)
924{ 1485{
1486 dTHX;
925 return !!SvSTATE (coro_sv)->flags & CF_READY; 1487 return !!(SvSTATE (coro_sv)->flags & CF_READY);
926} 1488}
927 1489
928static void 1490static void
929prepare_schedule (struct transfer_args *ta) 1491prepare_schedule (pTHX_ struct transfer_args *ta)
930{ 1492{
931 SV *current, *prev, *next; 1493 SV *prev_sv, *next_sv;
932
933 current = GvSV (coro_current);
934 1494
935 for (;;) 1495 for (;;)
936 { 1496 {
937 LOCK; 1497 LOCK;
938 next = coro_deq (PRIO_MIN); 1498 next_sv = coro_deq (aTHX);
1499
1500 /* nothing to schedule: call the idle handler */
1501 if (expect_false (!next_sv))
1502 {
1503 dSP;
1504 UNLOCK;
1505
1506 ENTER;
1507 SAVETMPS;
1508
1509 PUSHMARK (SP);
1510 PUTBACK;
1511 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1512 SPAGAIN;
1513
1514 FREETMPS;
1515 LEAVE;
1516 continue;
1517 }
1518
1519 ta->next = SvSTATE (next_sv);
1520
1521 /* cannot transfer to destroyed coros, skip and look for next */
1522 if (expect_false (ta->next->flags & CF_DESTROYED))
1523 {
1524 UNLOCK;
1525 SvREFCNT_dec (next_sv);
1526 /* coro_nready is already taken care of by destroy */
1527 continue;
1528 }
1529
1530 --coro_nready;
939 UNLOCK; 1531 UNLOCK;
940
941 if (next)
942 break; 1532 break;
943
944 {
945 dSP;
946
947 ENTER;
948 SAVETMPS;
949
950 PUSHMARK (SP);
951 PUTBACK;
952 call_sv (GvSV (coro_idle), G_DISCARD);
953
954 FREETMPS;
955 LEAVE;
956 } 1533 }
957 }
958
959 prev = SvRV (current);
960 SvRV (current) = next;
961 1534
962 /* free this only after the transfer */ 1535 /* free this only after the transfer */
1536 prev_sv = SvRV (coro_current);
1537 ta->prev = SvSTATE (prev_sv);
1538 TRANSFER_CHECK (*ta);
1539 assert (ta->next->flags & CF_READY);
1540 ta->next->flags &= ~CF_READY;
1541 SvRV_set (coro_current, next_sv);
1542
963 LOCK; 1543 LOCK;
964 free_coro_mortal (); 1544 free_coro_mortal (aTHX);
1545 coro_mortal = prev_sv;
965 UNLOCK; 1546 UNLOCK;
966 coro_mortal = prev;
967
968 ta->prev = SvSTATE (prev);
969 ta->next = SvSTATE (next);
970 ta->flags = TRANSFER_SAVE_ALL;
971
972 ta->next->flags &= ~CF_READY;
973} 1547}
974 1548
975static void 1549static void
976prepare_cede (struct transfer_args *ta) 1550prepare_cede (pTHX_ struct transfer_args *ta)
977{ 1551{
978 api_ready (GvSV (coro_current)); 1552 api_ready (coro_current);
979
980 prepare_schedule (ta); 1553 prepare_schedule (aTHX_ ta);
1554}
1555
1556static int
1557prepare_cede_notself (pTHX_ struct transfer_args *ta)
1558{
1559 if (coro_nready)
1560 {
1561 SV *prev = SvRV (coro_current);
1562 prepare_schedule (aTHX_ ta);
1563 api_ready (prev);
1564 return 1;
1565 }
1566 else
1567 return 0;
981} 1568}
982 1569
983static void 1570static void
984api_schedule (void) 1571api_schedule (void)
985{ 1572{
986 dTHX; 1573 dTHX;
987 struct transfer_args ta; 1574 struct transfer_args ta;
988 1575
989 prepare_schedule (&ta); 1576 prepare_schedule (aTHX_ &ta);
990 TRANSFER (ta); 1577 TRANSFER (ta, 1);
991} 1578}
992 1579
993static void 1580static int
994api_cede (void) 1581api_cede (void)
995{ 1582{
996 dTHX; 1583 dTHX;
997 struct transfer_args ta; 1584 struct transfer_args ta;
998 1585
999 prepare_cede (&ta); 1586 prepare_cede (aTHX_ &ta);
1587
1588 if (expect_true (ta.prev != ta.next))
1589 {
1000 TRANSFER (ta); 1590 TRANSFER (ta, 1);
1591 return 1;
1592 }
1593 else
1594 return 0;
1001} 1595}
1002 1596
1597static int
1598api_cede_notself (void)
1599{
1600 dTHX;
1601 struct transfer_args ta;
1602
1603 if (prepare_cede_notself (aTHX_ &ta))
1604 {
1605 TRANSFER (ta, 1);
1606 return 1;
1607 }
1608 else
1609 return 0;
1610}
1611
1612static void
1613api_trace (SV *coro_sv, int flags)
1614{
1615 dTHX;
1616 struct coro *coro = SvSTATE (coro_sv);
1617
1618 if (flags & CC_TRACE)
1619 {
1620 if (!coro->cctx)
1621 coro->cctx = cctx_new ();
1622 else if (!(coro->cctx->flags & CC_TRACE))
1623 croak ("cannot enable tracing on coroutine with custom stack");
1624
1625 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1626 }
1627 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1628 {
1629 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1630
1631 if (coro->flags & CF_RUNNING)
1632 PL_runops = RUNOPS_DEFAULT;
1633 else
1634 coro->slot->runops = RUNOPS_DEFAULT;
1635 }
1636}
1637
1638static int
1639coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1640{
1641 AV *padlist;
1642 AV *av = (AV *)mg->mg_obj;
1643
1644 abort ();
1645
1646 return 0;
1647}
1648
1649static MGVTBL coro_gensub_vtbl = {
1650 0, 0, 0, 0,
1651 coro_gensub_free
1652};
1653
1654/*****************************************************************************/
1655/* PerlIO::cede */
1656
1657typedef struct
1658{
1659 PerlIOBuf base;
1660 NV next, every;
1661} PerlIOCede;
1662
1663static IV
1664PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1665{
1666 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1667
1668 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1669 self->next = nvtime () + self->every;
1670
1671 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1672}
1673
1674static SV *
1675PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1676{
1677 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1678
1679 return newSVnv (self->every);
1680}
1681
1682static IV
1683PerlIOCede_flush (pTHX_ PerlIO *f)
1684{
1685 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1686 double now = nvtime ();
1687
1688 if (now >= self->next)
1689 {
1690 api_cede ();
1691 self->next = now + self->every;
1692 }
1693
1694 return PerlIOBuf_flush (aTHX_ f);
1695}
1696
1697static PerlIO_funcs PerlIO_cede =
1698{
1699 sizeof(PerlIO_funcs),
1700 "cede",
1701 sizeof(PerlIOCede),
1702 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1703 PerlIOCede_pushed,
1704 PerlIOBuf_popped,
1705 PerlIOBuf_open,
1706 PerlIOBase_binmode,
1707 PerlIOCede_getarg,
1708 PerlIOBase_fileno,
1709 PerlIOBuf_dup,
1710 PerlIOBuf_read,
1711 PerlIOBuf_unread,
1712 PerlIOBuf_write,
1713 PerlIOBuf_seek,
1714 PerlIOBuf_tell,
1715 PerlIOBuf_close,
1716 PerlIOCede_flush,
1717 PerlIOBuf_fill,
1718 PerlIOBase_eof,
1719 PerlIOBase_error,
1720 PerlIOBase_clearerr,
1721 PerlIOBase_setlinebuf,
1722 PerlIOBuf_get_base,
1723 PerlIOBuf_bufsiz,
1724 PerlIOBuf_get_ptr,
1725 PerlIOBuf_get_cnt,
1726 PerlIOBuf_set_ptrcnt,
1727};
1728
1729
1003MODULE = Coro::State PACKAGE = Coro::State 1730MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1004 1731
1005PROTOTYPES: DISABLE 1732PROTOTYPES: DISABLE
1006 1733
1007BOOT: 1734BOOT:
1008{ 1735{
1009#ifdef USE_ITHREADS 1736#ifdef USE_ITHREADS
1010 MUTEX_INIT (&coro_mutex); 1737 MUTEX_INIT (&coro_mutex);
1011#endif 1738#endif
1012 BOOT_PAGESIZE; 1739 BOOT_PAGESIZE;
1013 1740
1741 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1742 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1743
1744 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1745 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1746 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1747
1748 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1749 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1750 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1751
1014 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1752 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1015 1753
1016 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1754 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1017 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1755 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1018 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1756 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1757 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1019 1758
1020 main_mainstack = PL_mainstack; 1759 main_mainstack = PL_mainstack;
1760 main_top_env = PL_top_env;
1021 1761
1762 while (main_top_env->je_prev)
1763 main_top_env = main_top_env->je_prev;
1764
1022 coroapi.ver = CORO_API_VERSION; 1765 coroapi.ver = CORO_API_VERSION;
1766 coroapi.rev = CORO_API_REVISION;
1023 coroapi.transfer = api_transfer; 1767 coroapi.transfer = api_transfer;
1768
1769 {
1770 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1771
1772 if (!svp) croak ("Time::HiRes is required");
1773 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1774
1775 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1776 }
1024 1777
1025 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1778 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1026} 1779}
1027 1780
1028SV * 1781SV *
1029new (char *klass, ...) 1782new (char *klass, ...)
1030 CODE: 1783 CODE:
1031{ 1784{
1032 struct coro *coro; 1785 struct coro *coro;
1786 MAGIC *mg;
1033 HV *hv; 1787 HV *hv;
1034 int i; 1788 int i;
1035 1789
1036 Newz (0, coro, 1, struct coro); 1790 Newz (0, coro, 1, struct coro);
1037 coro->args = newAV (); 1791 coro->args = newAV ();
1792 coro->flags = CF_NEW;
1038 1793
1794 if (coro_first) coro_first->prev = coro;
1795 coro->next = coro_first;
1796 coro_first = coro;
1797
1039 hv = newHV (); 1798 coro->hv = hv = newHV ();
1040 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1799 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1800 mg->mg_flags |= MGf_DUP;
1041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1801 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1042 1802
1803 av_extend (coro->args, items - 1);
1043 for (i = 1; i < items; i++) 1804 for (i = 1; i < items; i++)
1044 av_push (coro->args, newSVsv (ST (i))); 1805 av_push (coro->args, newSVsv (ST (i)));
1045} 1806}
1046 OUTPUT: 1807 OUTPUT:
1047 RETVAL 1808 RETVAL
1048 1809
1810# these not obviously related functions are all rolled into the same xs
1811# function to increase chances that they all will call transfer with the same
1812# stack offset
1049void 1813void
1050_set_stacklevel (...) 1814_set_stacklevel (...)
1051 ALIAS: 1815 ALIAS:
1052 Coro::State::transfer = 1 1816 Coro::State::transfer = 1
1053 Coro::schedule = 2 1817 Coro::schedule = 2
1054 Coro::cede = 3 1818 Coro::cede = 3
1055 Coro::Cont::yield = 4 1819 Coro::cede_notself = 4
1056 CODE: 1820 CODE:
1057{ 1821{
1058 struct transfer_args ta; 1822 struct transfer_args ta;
1059 1823
1824 PUTBACK;
1060 switch (ix) 1825 switch (ix)
1061 { 1826 {
1062 case 0: 1827 case 0:
1063 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1828 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1064 ta.next = 0; 1829 ta.next = 0;
1065 ta.flags = TRANSFER_SET_STACKLEVEL;
1066 break; 1830 break;
1067 1831
1068 case 1: 1832 case 1:
1069 if (items != 3) 1833 if (items != 2)
1070 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1834 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1071 1835
1072 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1836 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1073 break; 1837 break;
1074 1838
1075 case 2: 1839 case 2:
1076 prepare_schedule (&ta); 1840 prepare_schedule (aTHX_ &ta);
1077 break; 1841 break;
1078 1842
1079 case 3: 1843 case 3:
1080 prepare_cede (&ta); 1844 prepare_cede (aTHX_ &ta);
1081 break; 1845 break;
1082 1846
1083 case 4: 1847 case 4:
1084 { 1848 if (!prepare_cede_notself (aTHX_ &ta))
1085 SV *yieldstack; 1849 XSRETURN_EMPTY;
1086 SV *sv;
1087 AV *defav = GvAV (PL_defgv);
1088 1850
1089 yieldstack = *hv_fetch (
1090 (HV *)SvRV (GvSV (coro_current)),
1091 "yieldstack", sizeof ("yieldstack") - 1,
1092 0
1093 );
1094
1095 /* set up @_ -- ugly */
1096 av_clear (defav);
1097 av_fill (defav, items - 1);
1098 while (items--)
1099 av_store (defav, items, SvREFCNT_inc (ST(items)));
1100
1101 sv = av_pop ((AV *)SvRV (yieldstack));
1102 ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1103 ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1104 ta.flags = 0;
1105 SvREFCNT_dec (sv);
1106 }
1107 break; 1851 break;
1108
1109 } 1852 }
1853 SPAGAIN;
1110 1854
1855 BARRIER;
1856 PUTBACK;
1111 TRANSFER (ta); 1857 TRANSFER (ta, 0);
1858 SPAGAIN; /* might be the sp of a different coroutine now */
1859 /* be extra careful not to ever do anything after TRANSFER */
1112} 1860}
1861
1862bool
1863_destroy (SV *coro_sv)
1864 CODE:
1865 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1866 OUTPUT:
1867 RETVAL
1113 1868
1114void 1869void
1115_clone_state_from (SV *dst, SV *src)
1116 CODE:
1117{
1118 struct coro *coro_src = SvSTATE (src);
1119
1120 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1121
1122 ++coro_src->refcnt;
1123 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1124}
1125
1126void
1127_exit (code) 1870_exit (int code)
1128 int code
1129 PROTOTYPE: $ 1871 PROTOTYPE: $
1130 CODE: 1872 CODE:
1131 _exit (code); 1873 _exit (code);
1874
1875int
1876cctx_stacksize (int new_stacksize = 0)
1877 CODE:
1878 RETVAL = coro_stacksize;
1879 if (new_stacksize)
1880 coro_stacksize = new_stacksize;
1881 OUTPUT:
1882 RETVAL
1132 1883
1133int 1884int
1134cctx_count () 1885cctx_count ()
1135 CODE: 1886 CODE:
1136 RETVAL = cctx_count; 1887 RETVAL = cctx_count;
… …
1142 CODE: 1893 CODE:
1143 RETVAL = cctx_idle; 1894 RETVAL = cctx_idle;
1144 OUTPUT: 1895 OUTPUT:
1145 RETVAL 1896 RETVAL
1146 1897
1898void
1899list ()
1900 PPCODE:
1901{
1902 struct coro *coro;
1903 for (coro = coro_first; coro; coro = coro->next)
1904 if (coro->hv)
1905 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1906}
1907
1908void
1909call (Coro::State coro, SV *coderef)
1910 ALIAS:
1911 eval = 1
1912 CODE:
1913{
1914 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1915 {
1916 struct coro temp;
1917
1918 if (!(coro->flags & CF_RUNNING))
1919 {
1920 PUTBACK;
1921 save_perl (aTHX_ &temp);
1922 load_perl (aTHX_ coro);
1923 }
1924
1925 {
1926 dSP;
1927 ENTER;
1928 SAVETMPS;
1929 PUTBACK;
1930 PUSHSTACK;
1931 PUSHMARK (SP);
1932
1933 if (ix)
1934 eval_sv (coderef, 0);
1935 else
1936 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1937
1938 POPSTACK;
1939 SPAGAIN;
1940 FREETMPS;
1941 LEAVE;
1942 PUTBACK;
1943 }
1944
1945 if (!(coro->flags & CF_RUNNING))
1946 {
1947 save_perl (aTHX_ coro);
1948 load_perl (aTHX_ &temp);
1949 SPAGAIN;
1950 }
1951 }
1952}
1953
1954SV *
1955is_ready (Coro::State coro)
1956 PROTOTYPE: $
1957 ALIAS:
1958 is_ready = CF_READY
1959 is_running = CF_RUNNING
1960 is_new = CF_NEW
1961 is_destroyed = CF_DESTROYED
1962 CODE:
1963 RETVAL = boolSV (coro->flags & ix);
1964 OUTPUT:
1965 RETVAL
1966
1967void
1968api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1969
1970SV *
1971has_cctx (Coro::State coro)
1972 PROTOTYPE: $
1973 CODE:
1974 RETVAL = boolSV (!!coro->cctx);
1975 OUTPUT:
1976 RETVAL
1977
1978int
1979is_traced (Coro::State coro)
1980 PROTOTYPE: $
1981 CODE:
1982 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1983 OUTPUT:
1984 RETVAL
1985
1986IV
1987rss (Coro::State coro)
1988 PROTOTYPE: $
1989 ALIAS:
1990 usecount = 1
1991 CODE:
1992 switch (ix)
1993 {
1994 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1995 case 1: RETVAL = coro->usecount; break;
1996 }
1997 OUTPUT:
1998 RETVAL
1999
2000void
2001force_cctx ()
2002 CODE:
2003 struct coro *coro = SvSTATE (coro_current);
2004 coro->cctx->idle_sp = 0;
2005
2006void
2007throw (Coro::State self, SV *throw = &PL_sv_undef)
2008 PROTOTYPE: $;$
2009 CODE:
2010 SvREFCNT_dec (self->throw);
2011 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2012
2013void
2014swap_defsv (Coro::State self)
2015 PROTOTYPE: $
2016 ALIAS:
2017 swap_defav = 1
2018 CODE:
2019 if (!self->slot)
2020 croak ("cannot swap state with coroutine that has no saved state");
2021 else
2022 {
2023 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2024 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2025
2026 SV *tmp = *src; *src = *dst; *dst = tmp;
2027 }
2028
1147MODULE = Coro::State PACKAGE = Coro 2029MODULE = Coro::State PACKAGE = Coro
1148 2030
1149BOOT: 2031BOOT:
1150{ 2032{
1151 int i; 2033 int i;
1152 2034
2035 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2036 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2037 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2038
2039 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2040 SvREADONLY_on (coro_current);
2041
1153 coro_stash = gv_stashpv ("Coro", TRUE); 2042 coro_stash = gv_stashpv ("Coro", TRUE);
1154 2043
1155 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2044 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1156 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2045 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1157 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2046 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1158 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2047 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1159 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2048 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1160 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2049 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1161 2050
1162 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1163 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1164
1165 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2051 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1166 coro_ready[i] = newAV (); 2052 coro_ready[i] = newAV ();
1167 2053
1168 { 2054 {
1169 SV *sv = perl_get_sv("Coro::API", 1); 2055 SV *sv = perl_get_sv ("Coro::API", TRUE);
2056 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1170 2057
1171 coroapi.schedule = api_schedule; 2058 coroapi.schedule = api_schedule;
1172 coroapi.cede = api_cede; 2059 coroapi.cede = api_cede;
2060 coroapi.cede_notself = api_cede_notself;
1173 coroapi.ready = api_ready; 2061 coroapi.ready = api_ready;
1174 coroapi.is_ready = api_is_ready; 2062 coroapi.is_ready = api_is_ready;
1175 coroapi.nready = &coro_nready; 2063 coroapi.nready = &coro_nready;
1176 coroapi.current = coro_current; 2064 coroapi.current = coro_current;
1177 2065
1178 GCoroAPI = &coroapi; 2066 GCoroAPI = &coroapi;
1179 sv_setiv (sv, (IV)&coroapi); 2067 sv_setiv (sv, (IV)&coroapi);
1180 SvREADONLY_on (sv); 2068 SvREADONLY_on (sv);
1181 } 2069 }
1182} 2070}
2071
2072void
2073_set_current (SV *current)
2074 PROTOTYPE: $
2075 CODE:
2076 SvREFCNT_dec (SvRV (coro_current));
2077 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2078
2079void
2080_set_readyhook (SV *hook)
2081 PROTOTYPE: $
2082 CODE:
2083 LOCK;
2084 SvREFCNT_dec (coro_readyhook);
2085 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2086 UNLOCK;
1183 2087
1184int 2088int
1185prio (Coro::State coro, int newprio = 0) 2089prio (Coro::State coro, int newprio = 0)
1186 ALIAS: 2090 ALIAS:
1187 nice = 1 2091 nice = 1
… …
1190 RETVAL = coro->prio; 2094 RETVAL = coro->prio;
1191 2095
1192 if (items > 1) 2096 if (items > 1)
1193 { 2097 {
1194 if (ix) 2098 if (ix)
1195 newprio += coro->prio; 2099 newprio = coro->prio - newprio;
1196 2100
1197 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2101 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1198 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2102 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1199 2103
1200 coro->prio = newprio; 2104 coro->prio = newprio;
1201 } 2105 }
1202} 2106}
2107 OUTPUT:
2108 RETVAL
1203 2109
1204SV * 2110SV *
1205ready (SV *self) 2111ready (SV *self)
1206 PROTOTYPE: $ 2112 PROTOTYPE: $
1207 CODE: 2113 CODE:
1208 RETVAL = boolSV (api_ready (self)); 2114 RETVAL = boolSV (api_ready (self));
1209 OUTPUT: 2115 OUTPUT:
1210 RETVAL 2116 RETVAL
1211 2117
1212SV *
1213is_ready (SV *self)
1214 PROTOTYPE: $
1215 CODE:
1216 RETVAL = boolSV (api_is_ready (self));
1217 OUTPUT:
1218 RETVAL
1219
1220int 2118int
1221nready (...) 2119nready (...)
1222 PROTOTYPE: 2120 PROTOTYPE:
1223 CODE: 2121 CODE:
1224 RETVAL = coro_nready; 2122 RETVAL = coro_nready;
1225 OUTPUT: 2123 OUTPUT:
1226 RETVAL 2124 RETVAL
1227 2125
1228MODULE = Coro::State PACKAGE = Coro::AIO 2126# for async_pool speedup
2127void
2128_pool_1 (SV *cb)
2129 CODE:
2130{
2131 struct coro *coro = SvSTATE (coro_current);
2132 HV *hv = (HV *)SvRV (coro_current);
2133 AV *defav = GvAV (PL_defgv);
2134 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2135 AV *invoke_av;
2136 int i, len;
2137
2138 if (!invoke)
2139 {
2140 SV *old = PL_diehook;
2141 PL_diehook = 0;
2142 SvREFCNT_dec (old);
2143 croak ("\3async_pool terminate\2\n");
2144 }
2145
2146 SvREFCNT_dec (coro->saved_deffh);
2147 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2148
2149 hv_store (hv, "desc", sizeof ("desc") - 1,
2150 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2151
2152 invoke_av = (AV *)SvRV (invoke);
2153 len = av_len (invoke_av);
2154
2155 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2156
2157 if (len > 0)
2158 {
2159 av_fill (defav, len - 1);
2160 for (i = 0; i < len; ++i)
2161 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2162 }
2163
2164 SvREFCNT_dec (invoke);
2165}
2166
2167void
2168_pool_2 (SV *cb)
2169 CODE:
2170{
2171 struct coro *coro = SvSTATE (coro_current);
2172
2173 sv_setsv (cb, &PL_sv_undef);
2174
2175 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2176 coro->saved_deffh = 0;
2177
2178 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2179 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2180 {
2181 SV *old = PL_diehook;
2182 PL_diehook = 0;
2183 SvREFCNT_dec (old);
2184 croak ("\3async_pool terminate\2\n");
2185 }
2186
2187 av_clear (GvAV (PL_defgv));
2188 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2189 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2190
2191 coro->prio = 0;
2192
2193 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2194 api_trace (coro_current, 0);
2195
2196 av_push (av_async_pool, newSVsv (coro_current));
2197}
2198
2199#if 0
2200
2201void
2202_generator_call (...)
2203 PROTOTYPE: @
2204 PPCODE:
2205 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2206 xxxx
2207 abort ();
1229 2208
1230SV * 2209SV *
1231_get_state () 2210gensub (SV *sub, ...)
1232 CODE: 2211 PROTOTYPE: &;@
2212 CODE:
1233{ 2213{
1234 struct { 2214 struct coro *coro;
1235 int errorno; 2215 MAGIC *mg;
1236 int laststype; 2216 CV *xcv;
1237 int laststatval; 2217 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1238 Stat_t statcache; 2218 int i;
1239 } data;
1240 2219
1241 data.errorno = errno; 2220 CvGV (ncv) = CvGV (cv);
1242 data.laststype = PL_laststype; 2221 CvFILE (ncv) = CvFILE (cv);
1243 data.laststatval = PL_laststatval;
1244 data.statcache = PL_statcache;
1245 2222
1246 RETVAL = newSVpvn ((char *)&data, sizeof data); 2223 Newz (0, coro, 1, struct coro);
2224 coro->args = newAV ();
2225 coro->flags = CF_NEW;
2226
2227 av_extend (coro->args, items - 1);
2228 for (i = 1; i < items; i++)
2229 av_push (coro->args, newSVsv (ST (i)));
2230
2231 CvISXSUB_on (ncv);
2232 CvXSUBANY (ncv).any_ptr = (void *)coro;
2233
2234 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2235
2236 CvXSUB (ncv) = CvXSUB (xcv);
2237 CvANON_on (ncv);
2238
2239 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2240 RETVAL = newRV_noinc ((SV *)ncv);
1247} 2241}
1248 OUTPUT: 2242 OUTPUT:
1249 RETVAL 2243 RETVAL
1250 2244
2245#endif
2246
2247
2248MODULE = Coro::State PACKAGE = Coro::AIO
2249
1251void 2250void
1252_set_state (char *data_) 2251_get_state (SV *self)
2252 PPCODE:
2253{
2254 AV *defav = GvAV (PL_defgv);
2255 AV *av = newAV ();
2256 int i;
2257 SV *data_sv = newSV (sizeof (struct io_state));
2258 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2259 SvCUR_set (data_sv, sizeof (struct io_state));
2260 SvPOK_only (data_sv);
2261
2262 data->errorno = errno;
2263 data->laststype = PL_laststype;
2264 data->laststatval = PL_laststatval;
2265 data->statcache = PL_statcache;
2266
2267 av_extend (av, AvFILLp (defav) + 1 + 1);
2268
2269 for (i = 0; i <= AvFILLp (defav); ++i)
2270 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2271
2272 av_push (av, data_sv);
2273
2274 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2275
2276 api_ready (self);
2277}
2278
2279void
2280_set_state (SV *state)
1253 PROTOTYPE: $ 2281 PROTOTYPE: $
2282 PPCODE:
2283{
2284 AV *av = (AV *)SvRV (state);
2285 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2286 int i;
2287
2288 errno = data->errorno;
2289 PL_laststype = data->laststype;
2290 PL_laststatval = data->laststatval;
2291 PL_statcache = data->statcache;
2292
2293 EXTEND (SP, AvFILLp (av));
2294 for (i = 0; i < AvFILLp (av); ++i)
2295 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2296}
2297
2298
2299MODULE = Coro::State PACKAGE = Coro::AnyEvent
2300
2301BOOT:
2302 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2303
2304SV *
2305_schedule (...)
2306 PROTOTYPE: @
1254 CODE: 2307 CODE:
1255{ 2308{
1256 struct { 2309 static int incede;
1257 int errorno;
1258 int laststype;
1259 int laststatval;
1260 Stat_t statcache;
1261 } *data = (void *)data_;
1262 2310
1263 errno = data->errorno; 2311 api_cede_notself ();
1264 PL_laststype = data->laststype; 2312
1265 PL_laststatval = data->laststatval; 2313 ++incede;
1266 PL_statcache = data->statcache; 2314 while (coro_nready >= incede && api_cede ())
2315 ;
2316
2317 sv_setsv (sv_activity, &PL_sv_undef);
2318 if (coro_nready >= incede)
2319 {
2320 PUSHMARK (SP);
2321 PUTBACK;
2322 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2323 SPAGAIN;
2324 }
2325
2326 --incede;
1267} 2327}
2328
2329
2330MODULE = Coro::State PACKAGE = PerlIO::cede
2331
2332BOOT:
2333 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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