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Comparing Coro/Coro/State.xs (file contents):
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC vs.
Revision 1.258 by root, Sun Nov 9 23:08:49 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 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
38#endif 54#endif
39 55
40/* the maximum number of idle cctx that will be pooled */ 56/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 57static int cctx_max_idle = 4;
42 58
43#define PERL_VERSION_ATLEAST(a,b,c) \ 59#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 60 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 61 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 62 && (PERL_VERSION > (b) \
… …
65# ifndef IS_PADCONST 81# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
67# endif 83# endif
68#endif 84#endif
69 85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
70/* 5.8.7 */ 104/* 5.8.7 */
71#ifndef SvRV_set 105#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 107#endif
74 108
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 110# undef CORO_STACKGUARD
77#endif 111#endif
78 112
79#ifndef STACKGUARD 113#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 114# define CORO_STACKGUARD 0
81#endif 115#endif
82 116
83/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 120#endif
87 121
88/* The next macro should declare a variable stacklevel that contains and approximation 122/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 123 * portable way as possible. */
90 * and should be unique. */
91#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
93 126
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 128
96#if __GNUC__ >= 3 129#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 133#else
100# define attribute(x) 134# define attribute(x)
101# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
102#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
103 141
104#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
105 143
106#include "CoroAPI.h" 144#include "CoroAPI.h"
107 145
108#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
109static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
111# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
112#else 155#else
156
113# define LOCK (void)0 157# define LOCK (void)0
114# define UNLOCK (void)0 158# define UNLOCK (void)0
159
115#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
116 166
117/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
118struct io_state 168struct io_state
119{ 169{
170 AV *res;
120 int errorno; 171 int errorno;
121 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
122 int laststatval; 173 int laststatval;
123 Stat_t statcache; 174 Stat_t statcache;
124}; 175};
125 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE;
126static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
127static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env;
128static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
129static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186
187static GV *irsgv; /* $/ */
188static GV *stdoutgv; /* *STDOUT */
189static SV *rv_diehook;
190static SV *rv_warnhook;
191static HV *hv_sig; /* %SIG */
192
193/* async_pool helper stuff */
194static SV *sv_pool_rss;
195static SV *sv_pool_size;
196static AV *av_async_pool;
197
198/* Coro::AnyEvent */
199static SV *sv_activity;
130 200
131static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
132static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
203
204enum {
205 CC_MAPPED = 0x01,
206 CC_NOREUSE = 0x02, /* throw this away after tracing */
207 CC_TRACE = 0x04,
208 CC_TRACE_SUB = 0x08, /* trace sub calls */
209 CC_TRACE_LINE = 0x10, /* trace each statement */
210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
211};
133 212
134/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
135typedef struct coro_cctx { 214typedef struct coro_cctx {
136 struct coro_cctx *next; 215 struct coro_cctx *next;
137 216
138 /* the stack */ 217 /* the stack */
139 void *sptr; 218 void *sptr;
140 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
141 220
142 /* cpu state */ 221 /* cpu state */
143 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
144 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
145 JMPENV *top_env; 224 JMPENV *top_env;
146 coro_context cctx; 225 coro_context cctx;
147 226
148 int inuse; 227 U32 gen;
149
150#if USE_VALGRIND 228#if CORO_USE_VALGRIND
151 int valgrind_id; 229 int valgrind_id;
152#endif 230#endif
231 unsigned char flags;
153} coro_cctx; 232} coro_cctx;
154 233
155enum { 234enum {
156 CF_RUNNING = 0x0001, /* coroutine is running */ 235 CF_RUNNING = 0x0001, /* coroutine is running */
157 CF_READY = 0x0002, /* coroutine is ready */ 236 CF_READY = 0x0002, /* coroutine is ready */
158 CF_NEW = 0x0004, /* has never been switched to */ 237 CF_NEW = 0x0004, /* has never been switched to */
159 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160}; 239};
161 240
241/* the structure where most of the perl state is stored, overlaid on the cxstack */
242typedef struct {
243 SV *defsv;
244 AV *defav;
245 SV *errsv;
246 SV *irsgv;
247#define VAR(name,type) type name;
248# include "state.h"
249#undef VAR
250} perl_slots;
251
252#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
253
162/* this is a structure representing a perl-level coroutine */ 254/* this is a structure representing a perl-level coroutine */
163struct coro { 255struct coro {
164 /* the c coroutine allocated to this perl coroutine, if any */ 256 /* the c coroutine allocated to this perl coroutine, if any */
165 coro_cctx *cctx; 257 coro_cctx *cctx;
166 258
259 /* process data */
260 AV *mainstack;
261 perl_slots *slot; /* basically the saved sp */
262
167 /* data associated with this coroutine (initial args) */ 263 AV *args; /* data associated with this coroutine (initial args) */
168 AV *args; 264 int refcnt; /* coroutines are refcounted, yes */
169 int refcnt;
170 int save; /* CORO_SAVE flags */
171 int flags; /* CF_ flags */ 265 int flags; /* CF_ flags */
266 HV *hv; /* the perl hash associated with this coro, if any */
172 267
173 /* optionally saved, might be zero */ 268 /* statistics */
174 AV *defav; /* @_ */ 269 int usecount; /* number of transfers to this coro */
175 SV *defsv; /* $_ */
176 SV *errsv; /* $@ */
177 SV *irssv; /* $/ */
178 SV *irssv_sv; /* real $/ cache */
179
180#define VAR(name,type) type name;
181# include "state.h"
182#undef VAR
183 270
184 /* coro process data */ 271 /* coro process data */
185 int prio; 272 int prio;
273 SV *throw; /* exception to be thrown */
274
275 /* async_pool */
276 SV *saved_deffh;
277
278 /* linked list */
279 struct coro *next, *prev;
186}; 280};
187 281
188typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
189typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
190 284
… …
197#define PRIO_IDLE -3 291#define PRIO_IDLE -3
198#define PRIO_MIN -4 292#define PRIO_MIN -4
199 293
200/* for Coro.pm */ 294/* for Coro.pm */
201static SV *coro_current; 295static SV *coro_current;
296static SV *coro_readyhook;
202static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 297static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
203static int coro_nready; 298static int coro_nready;
299static struct coro *coro_first;
204 300
205/** lowlevel stuff **********************************************************/ 301/** lowlevel stuff **********************************************************/
206 302
303static SV *
304coro_get_sv (pTHX_ const char *name, int create)
305{
306#if PERL_VERSION_ATLEAST (5,10,0)
307 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
308 get_sv (name, create);
309#endif
310 return get_sv (name, create);
311}
312
207static AV * 313static AV *
314coro_get_av (pTHX_ const char *name, int create)
315{
316#if PERL_VERSION_ATLEAST (5,10,0)
317 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
318 get_av (name, create);
319#endif
320 return get_av (name, create);
321}
322
323static HV *
324coro_get_hv (pTHX_ const char *name, int create)
325{
326#if PERL_VERSION_ATLEAST (5,10,0)
327 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
328 get_hv (name, create);
329#endif
330 return get_hv (name, create);
331}
332
333static AV *
208coro_clone_padlist (CV *cv) 334coro_clone_padlist (pTHX_ CV *cv)
209{ 335{
210 AV *padlist = CvPADLIST (cv); 336 AV *padlist = CvPADLIST (cv);
211 AV *newpadlist, *newpad; 337 AV *newpadlist, *newpad;
212 338
213 newpadlist = newAV (); 339 newpadlist = newAV ();
214 AvREAL_off (newpadlist); 340 AvREAL_off (newpadlist);
215#if PERL_VERSION_ATLEAST (5,9,0) 341#if PERL_VERSION_ATLEAST (5,10,0)
216 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 342 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
217#else 343#else
218 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 344 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
219#endif 345#endif
220 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 346 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
221 --AvFILLp (padlist); 347 --AvFILLp (padlist);
222 348
223 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 349 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
224 av_store (newpadlist, 1, (SV *)newpad); 350 av_store (newpadlist, 1, (SV *)newpad);
225 351
226 return newpadlist; 352 return newpadlist;
227} 353}
228 354
229static void 355static void
230free_padlist (AV *padlist) 356free_padlist (pTHX_ AV *padlist)
231{ 357{
232 /* may be during global destruction */ 358 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 359 if (SvREFCNT (padlist))
234 { 360 {
235 I32 i = AvFILLp (padlist); 361 I32 i = AvFILLp (padlist);
… …
256 AV *padlist; 382 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 383 AV *av = (AV *)mg->mg_obj;
258 384
259 /* casting is fun. */ 385 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 386 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 387 free_padlist (aTHX_ padlist);
262 388
263 SvREFCNT_dec (av); 389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
264 390
265 return 0; 391 return 0;
266} 392}
267 393
268#define PERL_MAGIC_coro PERL_MAGIC_ext 394#define CORO_MAGIC_type_cv PERL_MAGIC_ext
395#define CORO_MAGIC_type_state PERL_MAGIC_ext
269 396
270static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 397static MGVTBL coro_cv_vtbl = {
398 0, 0, 0, 0,
399 coro_cv_free
400};
271 401
272#define CORO_MAGIC(cv) \ 402#define CORO_MAGIC(sv, type) \
273 SvMAGIC (cv) \ 403 SvMAGIC (sv) \
274 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 404 ? SvMAGIC (sv)->mg_type == type \
275 ? SvMAGIC (cv) \ 405 ? SvMAGIC (sv) \
276 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 406 : mg_find (sv, type) \
277 : 0 407 : 0
408
409#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
410#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
411
412static struct coro *
413SvSTATE_ (pTHX_ SV *coro)
414{
415 HV *stash;
416 MAGIC *mg;
417
418 if (SvROK (coro))
419 coro = SvRV (coro);
420
421 if (expect_false (SvTYPE (coro) != SVt_PVHV))
422 croak ("Coro::State object required");
423
424 stash = SvSTASH (coro);
425 if (expect_false (stash != coro_stash && stash != coro_state_stash))
426 {
427 /* very slow, but rare, check */
428 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
429 croak ("Coro::State object required");
430 }
431
432 mg = CORO_MAGIC_state (coro);
433 return (struct coro *)mg->mg_ptr;
434}
435
436#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
278 437
279/* the next two functions merely cache the padlists */ 438/* the next two functions merely cache the padlists */
280static void 439static void
281get_padlist (CV *cv) 440get_padlist (pTHX_ CV *cv)
282{ 441{
283 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
284 AV *av; 443 AV *av;
285 444
286 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 445 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 446 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288 else 447 else
289 { 448 {
290#if PREFER_PERL_FUNCTIONS 449#if CORO_PREFER_PERL_FUNCTIONS
291 /* this is probably cleaner, but also slower? */ 450 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */
292 CV *cp = Perl_cv_clone (cv); 452 CV *cp = Perl_cv_clone (cv);
293 CvPADLIST (cv) = CvPADLIST (cp); 453 CvPADLIST (cv) = CvPADLIST (cp);
294 CvPADLIST (cp) = 0; 454 CvPADLIST (cp) = 0;
295 SvREFCNT_dec (cp); 455 SvREFCNT_dec (cp);
296#else 456#else
297 CvPADLIST (cv) = coro_clone_padlist (cv); 457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298#endif 458#endif
299 } 459 }
300} 460}
301 461
302static void 462static void
303put_padlist (CV *cv) 463put_padlist (pTHX_ CV *cv)
304{ 464{
305 MAGIC *mg = CORO_MAGIC (cv); 465 MAGIC *mg = CORO_MAGIC_cv (cv);
306 AV *av; 466 AV *av;
307 467
308 if (!mg) 468 if (expect_false (!mg))
309 { 469 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
310 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312 mg->mg_virtual = &vtbl_coro;
313 mg->mg_obj = (SV *)newAV ();
314 }
315 470
316 av = (AV *)mg->mg_obj; 471 av = (AV *)mg->mg_obj;
317 472
318 if (AvFILLp (av) >= AvMAX (av)) 473 if (expect_false (AvFILLp (av) >= AvMAX (av)))
319 av_extend (av, AvMAX (av) + 1); 474 av_extend (av, AvMAX (av) + 1);
320 475
321 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 476 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322} 477}
323 478
324/** load & save, init *******************************************************/ 479/** load & save, init *******************************************************/
325 480
326#define SB do {
327#define SE } while (0)
328
329#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331static void 481static void
332load_perl (Coro__State c) 482load_perl (pTHX_ Coro__State c)
333{ 483{
484 perl_slots *slot = c->slot;
485 c->slot = 0;
486
487 PL_mainstack = c->mainstack;
488
489 GvSV (PL_defgv) = slot->defsv;
490 GvAV (PL_defgv) = slot->defav;
491 GvSV (PL_errgv) = slot->errsv;
492 GvSV (irsgv) = slot->irsgv;
493
334#define VAR(name,type) PL_ ## name = c->name; 494 #define VAR(name,type) PL_ ## name = slot->name;
335# include "state.h" 495 # include "state.h"
336#undef VAR 496 #undef VAR
337
338 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
339 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
340 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
341 if (c->irssv)
342 {
343 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
344 SvREFCNT_dec (c->irssv);
345 else
346 {
347 REPLACE_SV (PL_rs, c->irssv);
348 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349 sv_setsv (c->irssv_sv, PL_rs);
350 }
351 }
352 497
353 { 498 {
354 dSP; 499 dSP;
500
355 CV *cv; 501 CV *cv;
356 502
357 /* now do the ugly restore mess */ 503 /* now do the ugly restore mess */
358 while ((cv = (CV *)POPs)) 504 while (expect_true (cv = (CV *)POPs))
359 { 505 {
360 put_padlist (cv); /* mark this padlist as available */ 506 put_padlist (aTHX_ cv); /* mark this padlist as available */
361 CvDEPTH (cv) = PTR2IV (POPs); 507 CvDEPTH (cv) = PTR2IV (POPs);
362 CvPADLIST (cv) = (AV *)POPs; 508 CvPADLIST (cv) = (AV *)POPs;
363 } 509 }
364 510
365 PUTBACK; 511 PUTBACK;
366 } 512 }
367} 513}
368 514
369static void 515static void
370save_perl (Coro__State c) 516save_perl (pTHX_ Coro__State c)
371{ 517{
372 { 518 {
373 dSP; 519 dSP;
374 I32 cxix = cxstack_ix; 520 I32 cxix = cxstack_ix;
375 PERL_CONTEXT *ccstk = cxstack; 521 PERL_CONTEXT *ccstk = cxstack;
… …
378 /* 524 /*
379 * the worst thing you can imagine happens first - we have to save 525 * the worst thing you can imagine happens first - we have to save
380 * (and reinitialize) all cv's in the whole callchain :( 526 * (and reinitialize) all cv's in the whole callchain :(
381 */ 527 */
382 528
383 EXTEND (SP, 3 + 1);
384 PUSHs (Nullsv); 529 XPUSHs (Nullsv);
385 /* this loop was inspired by pp_caller */ 530 /* this loop was inspired by pp_caller */
386 for (;;) 531 for (;;)
387 { 532 {
388 while (cxix >= 0) 533 while (expect_true (cxix >= 0))
389 { 534 {
390 PERL_CONTEXT *cx = &ccstk[cxix--]; 535 PERL_CONTEXT *cx = &ccstk[cxix--];
391 536
392 if (CxTYPE (cx) == CXt_SUB) 537 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
393 { 538 {
394 CV *cv = cx->blk_sub.cv; 539 CV *cv = cx->blk_sub.cv;
395 540
396 if (CvDEPTH (cv)) 541 if (expect_true (CvDEPTH (cv)))
397 { 542 {
398 EXTEND (SP, 3); 543 EXTEND (SP, 3);
399 PUSHs ((SV *)CvPADLIST (cv)); 544 PUSHs ((SV *)CvPADLIST (cv));
400 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 545 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
401 PUSHs ((SV *)cv); 546 PUSHs ((SV *)cv);
402 547
403 CvDEPTH (cv) = 0; 548 CvDEPTH (cv) = 0;
404 get_padlist (cv); 549 get_padlist (aTHX_ cv);
405 } 550 }
406 } 551 }
407 } 552 }
408 553
409 if (top_si->si_type == PERLSI_MAIN) 554 if (expect_true (top_si->si_type == PERLSI_MAIN))
410 break; 555 break;
411 556
412 top_si = top_si->si_prev; 557 top_si = top_si->si_prev;
413 ccstk = top_si->si_cxstack; 558 ccstk = top_si->si_cxstack;
414 cxix = top_si->si_cxix; 559 cxix = top_si->si_cxix;
415 } 560 }
416 561
417 PUTBACK; 562 PUTBACK;
418 } 563 }
419 564
420 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 565 /* allocate some space on the context stack for our purposes */
421 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 566 /* we manually unroll here, as usually 2 slots is enough */
422 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 567 if (SLOT_COUNT >= 1) CXINC;
423 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 568 if (SLOT_COUNT >= 2) CXINC;
569 if (SLOT_COUNT >= 3) CXINC;
570 {
571 int i;
572 for (i = 3; i < SLOT_COUNT; ++i)
573 CXINC;
574 }
575 cxstack_ix -= SLOT_COUNT; /* undo allocation */
424 576
577 c->mainstack = PL_mainstack;
578
579 {
580 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
581
582 slot->defav = GvAV (PL_defgv);
583 slot->defsv = DEFSV;
584 slot->errsv = ERRSV;
585 slot->irsgv = GvSV (irsgv);
586
425#define VAR(name,type)c->name = PL_ ## name; 587 #define VAR(name,type) slot->name = PL_ ## name;
426# include "state.h" 588 # include "state.h"
427#undef VAR 589 #undef VAR
590 }
428} 591}
429 592
430/* 593/*
431 * allocate various perl stacks. This is an exact copy 594 * allocate various perl stacks. This is an exact copy
432 * of perl.c:init_stacks, except that it uses less memory 595 * of perl.c:init_stacks, except that it uses less memory
433 * on the (sometimes correct) assumption that coroutines do 596 * on the (sometimes correct) assumption that coroutines do
434 * not usually need a lot of stackspace. 597 * not usually need a lot of stackspace.
435 */ 598 */
436#if PREFER_PERL_FUNCTIONS 599#if CORO_PREFER_PERL_FUNCTIONS
437# define coro_init_stacks init_stacks 600# define coro_init_stacks init_stacks
438#else 601#else
439static void 602static void
440coro_init_stacks () 603coro_init_stacks (pTHX)
441{ 604{
442 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 605 PL_curstackinfo = new_stackinfo(32, 8);
443 PL_curstackinfo->si_type = PERLSI_MAIN; 606 PL_curstackinfo->si_type = PERLSI_MAIN;
444 PL_curstack = PL_curstackinfo->si_stack; 607 PL_curstack = PL_curstackinfo->si_stack;
445 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 608 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446 609
447 PL_stack_base = AvARRAY(PL_curstack); 610 PL_stack_base = AvARRAY(PL_curstack);
448 PL_stack_sp = PL_stack_base; 611 PL_stack_sp = PL_stack_base;
449 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 612 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450 613
451 New(50,PL_tmps_stack,128,SV*); 614 New(50,PL_tmps_stack,32,SV*);
452 PL_tmps_floor = -1; 615 PL_tmps_floor = -1;
453 PL_tmps_ix = -1; 616 PL_tmps_ix = -1;
454 PL_tmps_max = 128; 617 PL_tmps_max = 32;
455 618
456 New(54,PL_markstack,32,I32); 619 New(54,PL_markstack,16,I32);
457 PL_markstack_ptr = PL_markstack; 620 PL_markstack_ptr = PL_markstack;
458 PL_markstack_max = PL_markstack + 32; 621 PL_markstack_max = PL_markstack + 16;
459 622
460#ifdef SET_MARK_OFFSET 623#ifdef SET_MARK_OFFSET
461 SET_MARK_OFFSET; 624 SET_MARK_OFFSET;
462#endif 625#endif
463 626
464 New(54,PL_scopestack,32,I32); 627 New(54,PL_scopestack,8,I32);
465 PL_scopestack_ix = 0; 628 PL_scopestack_ix = 0;
466 PL_scopestack_max = 32; 629 PL_scopestack_max = 8;
467 630
468 New(54,PL_savestack,64,ANY); 631 New(54,PL_savestack,24,ANY);
469 PL_savestack_ix = 0; 632 PL_savestack_ix = 0;
470 PL_savestack_max = 64; 633 PL_savestack_max = 24;
471 634
472#if !PERL_VERSION_ATLEAST (5,9,0) 635#if !PERL_VERSION_ATLEAST (5,10,0)
473 New(54,PL_retstack,16,OP*); 636 New(54,PL_retstack,4,OP*);
474 PL_retstack_ix = 0; 637 PL_retstack_ix = 0;
475 PL_retstack_max = 16; 638 PL_retstack_max = 4;
476#endif 639#endif
477} 640}
478#endif 641#endif
479 642
480/* 643/*
481 * destroy the stacks, the callchain etc... 644 * destroy the stacks, the callchain etc...
482 */ 645 */
483static void 646static void
484coro_destroy_stacks () 647coro_destruct_stacks (pTHX)
485{ 648{
486 if (!IN_DESTRUCT)
487 {
488 /* restore all saved variables and stuff */
489 LEAVE_SCOPE (0);
490 assert (PL_tmps_floor == -1);
491
492 /* free all temporaries */
493 FREETMPS;
494 assert (PL_tmps_ix == -1);
495
496 /* unwind all extra stacks */
497 POPSTACK_TO (PL_mainstack);
498
499 /* unwind main stack */
500 dounwind (-1);
501 }
502
503 while (PL_curstackinfo->si_next) 649 while (PL_curstackinfo->si_next)
504 PL_curstackinfo = PL_curstackinfo->si_next; 650 PL_curstackinfo = PL_curstackinfo->si_next;
505 651
506 while (PL_curstackinfo) 652 while (PL_curstackinfo)
507 { 653 {
… …
517 663
518 Safefree (PL_tmps_stack); 664 Safefree (PL_tmps_stack);
519 Safefree (PL_markstack); 665 Safefree (PL_markstack);
520 Safefree (PL_scopestack); 666 Safefree (PL_scopestack);
521 Safefree (PL_savestack); 667 Safefree (PL_savestack);
522#if !PERL_VERSION_ATLEAST (5,9,0) 668#if !PERL_VERSION_ATLEAST (5,10,0)
523 Safefree (PL_retstack); 669 Safefree (PL_retstack);
524#endif 670#endif
525} 671}
526 672
673static size_t
674coro_rss (pTHX_ struct coro *coro)
675{
676 size_t rss = sizeof (*coro);
677
678 if (coro->mainstack)
679 {
680 perl_slots tmp_slot;
681 perl_slots *slot;
682
683 if (coro->flags & CF_RUNNING)
684 {
685 slot = &tmp_slot;
686
687 #define VAR(name,type) slot->name = PL_ ## name;
688 # include "state.h"
689 #undef VAR
690 }
691 else
692 slot = coro->slot;
693
694 if (slot)
695 {
696 rss += sizeof (slot->curstackinfo);
697 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
698 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
699 rss += slot->tmps_max * sizeof (SV *);
700 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
701 rss += slot->scopestack_max * sizeof (I32);
702 rss += slot->savestack_max * sizeof (ANY);
703
704#if !PERL_VERSION_ATLEAST (5,10,0)
705 rss += slot->retstack_max * sizeof (OP *);
706#endif
707 }
708 }
709
710 return rss;
711}
712
527/** coroutine stack handling ************************************************/ 713/** coroutine stack handling ************************************************/
528 714
715static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
716static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
717static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
718
719/* apparently < 5.8.8 */
720#ifndef MgPV_nolen_const
721#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
722 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
723 (const char*)(mg)->mg_ptr)
724#endif
725
726/*
727 * This overrides the default magic get method of %SIG elements.
728 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
729 * and instead of tryign to save and restore the hash elements, we just provide
730 * readback here.
731 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
732 * not expecting this to actually change the hook. This is a potential problem
733 * when a schedule happens then, but we ignore this.
734 */
735static int
736coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
737{
738 const char *s = MgPV_nolen_const (mg);
739
740 if (*s == '_')
741 {
742 SV **svp = 0;
743
744 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
745 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
746
747 if (svp)
748 {
749 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
750 return 0;
751 }
752 }
753
754 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
755}
756
757static int
758coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
759{
760 const char *s = MgPV_nolen_const (mg);
761
762 if (*s == '_')
763 {
764 SV **svp = 0;
765
766 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
767 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
768
769 if (svp)
770 {
771 SV *old = *svp;
772 *svp = 0;
773 SvREFCNT_dec (old);
774 return 0;
775 }
776 }
777
778 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
779}
780
781static int
782coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
783{
784 const char *s = MgPV_nolen_const (mg);
785
786 if (*s == '_')
787 {
788 SV **svp = 0;
789
790 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
791 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
792
793 if (svp)
794 {
795 SV *old = *svp;
796 *svp = newSVsv (sv);
797 SvREFCNT_dec (old);
798 return 0;
799 }
800 }
801
802 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
803}
804
529static void 805static void
530setup_coro (struct coro *coro) 806coro_setup (pTHX_ struct coro *coro)
531{ 807{
532 /* 808 /*
533 * emulate part of the perl startup here. 809 * emulate part of the perl startup here.
534 */ 810 */
535
536 coro_init_stacks (); 811 coro_init_stacks (aTHX);
537 812
813 PL_runops = RUNOPS_DEFAULT;
538 PL_curcop = &PL_compiling; 814 PL_curcop = &PL_compiling;
539 PL_in_eval = EVAL_NULL; 815 PL_in_eval = EVAL_NULL;
816 PL_comppad = 0;
540 PL_curpm = 0; 817 PL_curpm = 0;
818 PL_curpad = 0;
541 PL_localizing = 0; 819 PL_localizing = 0;
542 PL_dirty = 0; 820 PL_dirty = 0;
543 PL_restartop = 0; 821 PL_restartop = 0;
822#if PERL_VERSION_ATLEAST (5,10,0)
823 PL_parser = 0;
824#endif
825
826 /* recreate the die/warn hooks */
827 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
828 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
829
830 GvSV (PL_defgv) = newSV (0);
831 GvAV (PL_defgv) = coro->args; coro->args = 0;
832 GvSV (PL_errgv) = newSV (0);
833 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
834 PL_rs = newSVsv (GvSV (irsgv));
835 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
544 836
545 { 837 {
546 dSP; 838 dSP;
547 LOGOP myop; 839 LOGOP myop;
548 840
549 SvREFCNT_dec (GvAV (PL_defgv));
550 GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552 Zero (&myop, 1, LOGOP); 841 Zero (&myop, 1, LOGOP);
553 myop.op_next = Nullop; 842 myop.op_next = Nullop;
554 myop.op_flags = OPf_WANT_VOID; 843 myop.op_flags = OPf_WANT_VOID;
555 844
556 PUSHMARK (SP); 845 PUSHMARK (SP);
557 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
558 PUTBACK; 847 PUTBACK;
559 PL_op = (OP *)&myop; 848 PL_op = (OP *)&myop;
560 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561 SPAGAIN; 850 SPAGAIN;
562 } 851 }
563 852
564 ENTER; /* necessary e.g. for dounwind */ 853 /* this newly created coroutine might be run on an existing cctx which most
854 * likely was suspended in set_stacklevel, called from entersub.
855 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
856 * so we ENTER here for symmetry
857 */
858 ENTER;
565} 859}
566 860
567static void 861static void
862coro_destruct (pTHX_ struct coro *coro)
863{
864 if (!IN_DESTRUCT)
865 {
866 /* restore all saved variables and stuff */
867 LEAVE_SCOPE (0);
868 assert (PL_tmps_floor == -1);
869
870 /* free all temporaries */
871 FREETMPS;
872 assert (PL_tmps_ix == -1);
873
874 /* unwind all extra stacks */
875 POPSTACK_TO (PL_mainstack);
876
877 /* unwind main stack */
878 dounwind (-1);
879 }
880
881 SvREFCNT_dec (GvSV (PL_defgv));
882 SvREFCNT_dec (GvAV (PL_defgv));
883 SvREFCNT_dec (GvSV (PL_errgv));
884 SvREFCNT_dec (PL_defoutgv);
885 SvREFCNT_dec (PL_rs);
886 SvREFCNT_dec (GvSV (irsgv));
887
888 SvREFCNT_dec (PL_diehook);
889 SvREFCNT_dec (PL_warnhook);
890
891 SvREFCNT_dec (coro->saved_deffh);
892 SvREFCNT_dec (coro->throw);
893
894 coro_destruct_stacks (aTHX);
895}
896
897static void
568free_coro_mortal () 898free_coro_mortal (pTHX)
569{ 899{
570 if (coro_mortal) 900 if (expect_true (coro_mortal))
571 { 901 {
572 SvREFCNT_dec (coro_mortal); 902 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 903 coro_mortal = 0;
574 } 904 }
575} 905}
576 906
907static int
908runops_trace (pTHX)
909{
910 COP *oldcop = 0;
911 int oldcxix = -2;
912 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
913 coro_cctx *cctx = coro->cctx;
914
915 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
916 {
917 PERL_ASYNC_CHECK ();
918
919 if (cctx->flags & CC_TRACE_ALL)
920 {
921 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
922 {
923 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
924 SV **bot, **top;
925 AV *av = newAV (); /* return values */
926 SV **cb;
927 dSP;
928
929 GV *gv = CvGV (cx->blk_sub.cv);
930 SV *fullname = sv_2mortal (newSV (0));
931 if (isGV (gv))
932 gv_efullname3 (fullname, gv, 0);
933
934 bot = PL_stack_base + cx->blk_oldsp + 1;
935 top = cx->blk_gimme == G_ARRAY ? SP + 1
936 : cx->blk_gimme == G_SCALAR ? bot + 1
937 : bot;
938
939 av_extend (av, top - bot);
940 while (bot < top)
941 av_push (av, SvREFCNT_inc_NN (*bot++));
942
943 PL_runops = RUNOPS_DEFAULT;
944 ENTER;
945 SAVETMPS;
946 EXTEND (SP, 3);
947 PUSHMARK (SP);
948 PUSHs (&PL_sv_no);
949 PUSHs (fullname);
950 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
951 PUTBACK;
952 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
953 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
954 SPAGAIN;
955 FREETMPS;
956 LEAVE;
957 PL_runops = runops_trace;
958 }
959
960 if (oldcop != PL_curcop)
961 {
962 oldcop = PL_curcop;
963
964 if (PL_curcop != &PL_compiling)
965 {
966 SV **cb;
967
968 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
969 {
970 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
971
972 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
973 {
974 runops_proc_t old_runops = PL_runops;
975 dSP;
976 GV *gv = CvGV (cx->blk_sub.cv);
977 SV *fullname = sv_2mortal (newSV (0));
978
979 if (isGV (gv))
980 gv_efullname3 (fullname, gv, 0);
981
982 PL_runops = RUNOPS_DEFAULT;
983 ENTER;
984 SAVETMPS;
985 EXTEND (SP, 3);
986 PUSHMARK (SP);
987 PUSHs (&PL_sv_yes);
988 PUSHs (fullname);
989 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
990 PUTBACK;
991 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
992 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
993 SPAGAIN;
994 FREETMPS;
995 LEAVE;
996 PL_runops = runops_trace;
997 }
998
999 oldcxix = cxstack_ix;
1000 }
1001
1002 if (cctx->flags & CC_TRACE_LINE)
1003 {
1004 dSP;
1005
1006 PL_runops = RUNOPS_DEFAULT;
1007 ENTER;
1008 SAVETMPS;
1009 EXTEND (SP, 3);
1010 PL_runops = RUNOPS_DEFAULT;
1011 PUSHMARK (SP);
1012 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1013 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1014 PUTBACK;
1015 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1016 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1017 SPAGAIN;
1018 FREETMPS;
1019 LEAVE;
1020 PL_runops = runops_trace;
1021 }
1022 }
1023 }
1024 }
1025 }
1026
1027 TAINT_NOT;
1028 return 0;
1029}
1030
577/* inject a fake call to Coro::State::_cctx_init into the execution */ 1031/* inject a fake call to Coro::State::_cctx_init into the execution */
1032/* _cctx_init should be careful, as it could be called at almost any time */
1033/* during execution of a perl program */
578static void NOINLINE 1034static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 1035cctx_prepare (pTHX_ coro_cctx *cctx)
580{ 1036{
581 dSP; 1037 dSP;
582 LOGOP myop; 1038 LOGOP myop;
1039
1040 PL_top_env = &PL_start_env;
1041
1042 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace;
583 1044
584 Zero (&myop, 1, LOGOP); 1045 Zero (&myop, 1, LOGOP);
585 myop.op_next = PL_op; 1046 myop.op_next = PL_op;
586 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587 1048
… …
593 PL_op = (OP *)&myop; 1054 PL_op = (OP *)&myop;
594 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595 SPAGAIN; 1056 SPAGAIN;
596} 1057}
597 1058
1059/*
1060 * this is a _very_ stripped down perl interpreter ;)
1061 */
598static void 1062static void
599coro_run (void *arg) 1063cctx_run (void *arg)
600{ 1064{
1065#ifdef USE_ITHREADS
1066# if CORO_PTHREAD
1067 PERL_SET_CONTEXT (coro_thx);
1068# endif
1069#endif
1070 {
1071 dTHX;
1072
601 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */
602 UNLOCK; 1074 UNLOCK;
603 1075
604 /* 1076 /* we now skip the entersub that lead to transfer() */
605 * this is a _very_ stripped down perl interpreter ;) 1077 PL_op = PL_op->op_next;
606 */
607 PL_top_env = &PL_start_env;
608 1078
609 /* inject call to cctx_init */ 1079 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 1080 cctx_prepare (aTHX_ (coro_cctx *)arg);
611 1081
612 /* somebody will hit me for both perl_run and PL_restartop */ 1082 /* somebody or something will hit me for both perl_run and PL_restartop */
613 PL_restartop = PL_op; 1083 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 1084 perl_run (PL_curinterp);
615 1085
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1086 /*
617 abort (); 1087 * If perl-run returns we assume exit() was being called or the coro
1088 * fell off the end, which seems to be the only valid (non-bug)
1089 * reason for perl_run to return. We try to exit by jumping to the
1090 * bootstrap-time "top" top_env, as we cannot restore the "main"
1091 * coroutine as Coro has no such concept
1092 */
1093 PL_top_env = main_top_env;
1094 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1095 }
618} 1096}
619 1097
620static coro_cctx * 1098static coro_cctx *
621cctx_new () 1099cctx_new ()
622{ 1100{
623 coro_cctx *cctx; 1101 coro_cctx *cctx;
624 1102
625 ++cctx_count; 1103 ++cctx_count;
626
627 Newz (0, cctx, 1, coro_cctx); 1104 New (0, cctx, 1, coro_cctx);
1105
1106 cctx->gen = cctx_gen;
1107 cctx->flags = 0;
1108
1109 return cctx;
1110}
1111
1112/* create a new cctx only suitable as source */
1113static coro_cctx *
1114cctx_new_empty ()
1115{
1116 coro_cctx *cctx = cctx_new ();
1117
1118 cctx->sptr = 0;
1119 cctx->idle_sp = 0; /* should never be a valid address */
1120 coro_create (&cctx->cctx, 0, 0, 0, 0);
1121
1122 return cctx;
1123}
1124
1125/* create a new cctx suitable as destination/running a perl interpreter */
1126static coro_cctx *
1127cctx_new_run ()
1128{
1129 coro_cctx *cctx = cctx_new ();
1130 void *stack_start;
1131 size_t stack_size;
628 1132
629#if HAVE_MMAP 1133#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1134 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 1135 /* mmap supposedly does allocate-on-write for us */
633 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1136 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634 1137
635 if (cctx->sptr == (void *)-1) 1138 if (cctx->sptr != (void *)-1)
636 {
637 perror ("FATAL: unable to mmap stack for coroutine");
638 _exit (EXIT_FAILURE);
639 } 1139 {
640
641# if STACKGUARD 1140# if CORO_STACKGUARD
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1141 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643# endif 1142# endif
1143 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1144 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1145 cctx->flags |= CC_MAPPED;
1146 }
1147 else
1148#endif
1149 {
1150 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1151 New (0, cctx->sptr, cctx_stacksize, long);
644 1152
645#else
646
647 cctx->ssize = STACKSIZE * (long)sizeof (long);
648 New (0, cctx->sptr, STACKSIZE, long);
649
650 if (!cctx->sptr) 1153 if (!cctx->sptr)
651 { 1154 {
652 perror ("FATAL: unable to malloc stack for coroutine"); 1155 perror ("FATAL: unable to allocate stack for coroutine");
653 _exit (EXIT_FAILURE); 1156 _exit (EXIT_FAILURE);
654 } 1157 }
655 1158
656#endif 1159 stack_start = cctx->sptr;
1160 stack_size = cctx->ssize;
1161 }
657 1162
658#if USE_VALGRIND 1163 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
659 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1164 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
660 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661 cctx->ssize + (char *)cctx->sptr
662 );
663#endif
664
665 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
666 1165
667 return cctx; 1166 return cctx;
668} 1167}
669 1168
670static void 1169static void
… …
672{ 1171{
673 if (!cctx) 1172 if (!cctx)
674 return; 1173 return;
675 1174
676 --cctx_count; 1175 --cctx_count;
1176 coro_destroy (&cctx->cctx);
677 1177
1178 /* coro_transfer creates new, empty cctx's */
1179 if (cctx->sptr)
1180 {
678#if USE_VALGRIND 1181#if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1182 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1183#endif
681 1184
682#if HAVE_MMAP 1185#if HAVE_MMAP
1186 if (cctx->flags & CC_MAPPED)
683 munmap (cctx->sptr, cctx->ssize); 1187 munmap (cctx->sptr, cctx->ssize);
684#else 1188 else
1189#endif
685 Safefree (cctx->sptr); 1190 Safefree (cctx->sptr);
686#endif 1191 }
687 1192
688 Safefree (cctx); 1193 Safefree (cctx);
689} 1194}
690 1195
1196/* wether this cctx should be destructed */
1197#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1198
691static coro_cctx * 1199static coro_cctx *
692cctx_get () 1200cctx_get (pTHX)
693{ 1201{
694 coro_cctx *cctx; 1202 while (expect_true (cctx_first))
695
696 if (cctx_first)
697 { 1203 {
698 cctx = cctx_first; 1204 coro_cctx *cctx = cctx_first;
699 cctx_first = cctx->next; 1205 cctx_first = cctx->next;
700 --cctx_idle; 1206 --cctx_idle;
701 } 1207
702 else 1208 if (expect_true (!CCTX_EXPIRED (cctx)))
703 { 1209 return cctx;
704 cctx = cctx_new (); 1210
705 PL_op = PL_op->op_next; 1211 cctx_destroy (cctx);
706 } 1212 }
707 1213
708 return cctx; 1214 return cctx_new_run ();
709} 1215}
710 1216
711static void 1217static void
712cctx_put (coro_cctx *cctx) 1218cctx_put (coro_cctx *cctx)
713{ 1219{
1220 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1221
714 /* free another cctx if overlimit */ 1222 /* free another cctx if overlimit */
715 if (cctx_idle >= MAX_IDLE_CCTX) 1223 if (expect_false (cctx_idle >= cctx_max_idle))
716 { 1224 {
717 coro_cctx *first = cctx_first; 1225 coro_cctx *first = cctx_first;
718 cctx_first = first->next; 1226 cctx_first = first->next;
719 --cctx_idle; 1227 --cctx_idle;
720 1228
721 assert (!first->inuse);
722 cctx_destroy (first); 1229 cctx_destroy (first);
723 } 1230 }
724 1231
725 ++cctx_idle; 1232 ++cctx_idle;
726 cctx->next = cctx_first; 1233 cctx->next = cctx_first;
727 cctx_first = cctx; 1234 cctx_first = cctx;
728} 1235}
729 1236
730/** coroutine switching *****************************************************/ 1237/** coroutine switching *****************************************************/
731 1238
732/* never call directly, always through the coro_state_transfer global variable */ 1239static void
1240transfer_check (pTHX_ struct coro *prev, struct coro *next)
1241{
1242 if (expect_true (prev != next))
1243 {
1244 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1245 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1246
1247 if (expect_false (next->flags & CF_RUNNING))
1248 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1249
1250 if (expect_false (next->flags & CF_DESTROYED))
1251 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1252
1253#if !PERL_VERSION_ATLEAST (5,10,0)
1254 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1255 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1256#endif
1257 }
1258}
1259
1260/* always use the TRANSFER macro */
733static void NOINLINE 1261static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1262transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
735{ 1263{
736 dSTACKLEVEL; 1264 dSTACKLEVEL;
737 1265
738 /* sometimes transfer is only called to set idle_sp */ 1266 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1267 if (expect_false (!next))
740 { 1268 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1269 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
742 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1270 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
743 } 1271 }
744 else if (prev != next) 1272 else if (expect_true (prev != next))
745 { 1273 {
1274 static volatile int has_throw;
746 coro_cctx *prev__cctx; 1275 coro_cctx *prev__cctx;
747 1276
748 if (prev->flags & CF_NEW) 1277 if (expect_false (prev->flags & CF_NEW))
749 { 1278 {
750 /* create a new empty context */ 1279 /* create a new empty/source context */
751 Newz (0, prev->cctx, 1, coro_cctx); 1280 prev->cctx = cctx_new_empty ();
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1281 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1282 prev->flags |= CF_RUNNING;
755 } 1283 }
756 1284
757 /*TODO: must not croak here */
758 if (!prev->flags & CF_RUNNING)
759 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761 if (next->flags & CF_RUNNING)
762 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764 if (next->flags & CF_DESTROYED)
765 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767 prev->flags &= ~CF_RUNNING; 1285 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1286 next->flags |= CF_RUNNING;
769 1287
770 LOCK; 1288 LOCK;
771 1289
1290 /* first get rid of the old state */
1291 save_perl (aTHX_ prev);
1292
772 if (next->flags & CF_NEW) 1293 if (expect_false (next->flags & CF_NEW))
773 { 1294 {
774 /* need to start coroutine */ 1295 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1296 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */
777 save_perl (prev);
778 /* setup coroutine call */ 1297 /* setup coroutine call */
779 setup_coro (next); 1298 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1299 }
783 else 1300 else
784 {
785 /* coroutine already started */
786 save_perl (prev);
787 load_perl (next); 1301 load_perl (aTHX_ next);
788 }
789 1302
790 prev__cctx = prev->cctx; 1303 prev__cctx = prev->cctx;
791 1304
792 /* possibly "free" the cctx */ 1305 /* possibly "free" the cctx */
1306 if (expect_true (
793 if (prev__cctx->idle_sp == STACKLEVEL) 1307 prev__cctx->idle_sp == STACKLEVEL
1308 && !(prev__cctx->flags & CC_TRACE)
1309 && !force_cctx
1310 ))
794 { 1311 {
795 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1312 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
796 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1313 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797 1314
798 prev->cctx = 0; 1315 prev->cctx = 0;
799 1316
1317 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1318 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1319 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1320 if (!next->cctx)
1321 next->cctx = cctx_get (aTHX);
1322
800 cctx_put (prev__cctx); 1323 cctx_put (prev__cctx);
801 prev__cctx->inuse = 0;
802 } 1324 }
803 1325
1326 ++next->usecount;
1327
804 if (!next->cctx) 1328 if (expect_true (!next->cctx))
805 {
806 next->cctx = cctx_get (); 1329 next->cctx = cctx_get (aTHX);
807 assert (!next->cctx->inuse);
808 next->cctx->inuse = 1;
809 }
810 1330
1331 has_throw = !!next->throw;
1332
811 if (prev__cctx != next->cctx) 1333 if (expect_false (prev__cctx != next->cctx))
812 { 1334 {
813 prev__cctx->top_env = PL_top_env; 1335 prev__cctx->top_env = PL_top_env;
814 PL_top_env = next->cctx->top_env; 1336 PL_top_env = next->cctx->top_env;
815 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1337 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816 } 1338 }
817 1339
818 free_coro_mortal (); 1340 free_coro_mortal (aTHX);
819 UNLOCK; 1341 UNLOCK;
1342
1343 if (expect_false (has_throw))
1344 {
1345 struct coro *coro = SvSTATE (coro_current);
1346
1347 if (coro->throw)
1348 {
1349 SV *exception = coro->throw;
1350 coro->throw = 0;
1351 sv_setsv (ERRSV, exception);
1352 croak (0);
1353 }
1354 }
820 } 1355 }
821} 1356}
822 1357
823struct transfer_args 1358struct transfer_args
824{ 1359{
825 struct coro *prev, *next; 1360 struct coro *prev, *next;
826}; 1361};
827 1362
1363#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
828#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1364#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829 1365
830/** high level stuff ********************************************************/ 1366/** high level stuff ********************************************************/
831 1367
832static int 1368static int
833coro_state_destroy (struct coro *coro) 1369coro_state_destroy (pTHX_ struct coro *coro)
834{ 1370{
835 if (coro->flags & CF_DESTROYED) 1371 if (coro->flags & CF_DESTROYED)
836 return 0; 1372 return 0;
837 1373
838 coro->flags |= CF_DESTROYED; 1374 coro->flags |= CF_DESTROYED;
839 1375
840 if (coro->flags & CF_READY) 1376 if (coro->flags & CF_READY)
841 { 1377 {
842 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1378 /* reduce nready, as destroying a ready coro effectively unreadies it */
843 /* alternative: look through all ready queues and remove it */ 1379 /* alternative: look through all ready queues and remove the coro */
844 LOCK; 1380 LOCK;
845 --coro_nready; 1381 --coro_nready;
846 UNLOCK; 1382 UNLOCK;
847 } 1383 }
848 else 1384 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1385 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1386
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1387 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1388 {
853 assert (!(coro->flags & CF_RUNNING));
854
855 struct coro temp; 1389 struct coro temp;
856 Zero (&temp, 1, struct coro);
857 temp.save = CORO_SAVE_ALL;
858 1390
859 if (coro->flags & CF_RUNNING) 1391 if (coro->flags & CF_RUNNING)
860 croak ("FATAL: tried to destroy currently running coroutine"); 1392 croak ("FATAL: tried to destroy currently running coroutine");
861 1393
862 save_perl (&temp); 1394 save_perl (aTHX_ &temp);
863 load_perl (coro); 1395 load_perl (aTHX_ coro);
864 1396
865 coro_destroy_stacks (); 1397 coro_destruct (aTHX_ coro);
866 1398
867 load_perl (&temp); /* this will get rid of defsv etc.. */ 1399 load_perl (aTHX_ &temp);
868 1400
869 coro->mainstack = 0; 1401 coro->slot = 0;
870 } 1402 }
871 1403
872 cctx_destroy (coro->cctx); 1404 cctx_destroy (coro->cctx);
873 SvREFCNT_dec (coro->args); 1405 SvREFCNT_dec (coro->args);
874 1406
1407 if (coro->next) coro->next->prev = coro->prev;
1408 if (coro->prev) coro->prev->next = coro->next;
1409 if (coro == coro_first) coro_first = coro->next;
1410
875 return 1; 1411 return 1;
876} 1412}
877 1413
878static int 1414static int
879coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1415coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880{ 1416{
881 struct coro *coro = (struct coro *)mg->mg_ptr; 1417 struct coro *coro = (struct coro *)mg->mg_ptr;
882 mg->mg_ptr = 0; 1418 mg->mg_ptr = 0;
883 1419
1420 coro->hv = 0;
1421
884 if (--coro->refcnt < 0) 1422 if (--coro->refcnt < 0)
885 { 1423 {
886 coro_state_destroy (coro); 1424 coro_state_destroy (aTHX_ coro);
887 Safefree (coro); 1425 Safefree (coro);
888 } 1426 }
889 1427
890 return 0; 1428 return 0;
891} 1429}
… …
909#else 1447#else
910# define MGf_DUP 0 1448# define MGf_DUP 0
911#endif 1449#endif
912}; 1450};
913 1451
914static struct coro *
915SvSTATE (SV *coro)
916{
917 HV *stash;
918 MAGIC *mg;
919
920 if (SvROK (coro))
921 coro = SvRV (coro);
922
923 stash = SvSTASH (coro);
924 if (stash != coro_stash && stash != coro_state_stash)
925 {
926 /* very slow, but rare, check */
927 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928 croak ("Coro::State object required");
929 }
930
931 mg = SvMAGIC (coro);
932 assert (mg->mg_type == PERL_MAGIC_ext);
933 return (struct coro *)mg->mg_ptr;
934}
935
936static void 1452static void
937prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1453prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938{ 1454{
939 ta->prev = SvSTATE (prev_sv); 1455 ta->prev = SvSTATE (prev_sv);
940 ta->next = SvSTATE (next_sv); 1456 ta->next = SvSTATE (next_sv);
1457 TRANSFER_CHECK (*ta);
941} 1458}
942 1459
943static void 1460static void
944api_transfer (SV *prev_sv, SV *next_sv) 1461api_transfer (SV *prev_sv, SV *next_sv)
945{ 1462{
1463 dTHX;
946 struct transfer_args ta; 1464 struct transfer_args ta;
947 1465
948 prepare_transfer (&ta, prev_sv, next_sv); 1466 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949 TRANSFER (ta); 1467 TRANSFER (ta, 1);
950}
951
952static int
953api_save (SV *coro_sv, int new_save)
954{
955 struct coro *coro = SvSTATE (coro_sv);
956 int old_save = coro->save;
957
958 if (new_save >= 0)
959 coro->save = new_save;
960
961 return old_save;
962} 1468}
963 1469
964/** Coro ********************************************************************/ 1470/** Coro ********************************************************************/
965 1471
966static void 1472static void
967coro_enq (SV *coro_sv) 1473coro_enq (pTHX_ SV *coro_sv)
968{ 1474{
969 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1475 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970} 1476}
971 1477
972static SV * 1478static SV *
973coro_deq (int min_prio) 1479coro_deq (pTHX)
974{ 1480{
975 int prio = PRIO_MAX - PRIO_MIN; 1481 int prio;
976 1482
977 min_prio -= PRIO_MIN;
978 if (min_prio < 0)
979 min_prio = 0;
980
981 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1483 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
982 if (AvFILLp (coro_ready [prio]) >= 0) 1484 if (AvFILLp (coro_ready [prio]) >= 0)
983 return av_shift (coro_ready [prio]); 1485 return av_shift (coro_ready [prio]);
984 1486
985 return 0; 1487 return 0;
986} 1488}
987 1489
988static int 1490static int
989api_ready (SV *coro_sv) 1491api_ready (SV *coro_sv)
990{ 1492{
1493 dTHX;
991 struct coro *coro; 1494 struct coro *coro;
1495 SV *sv_hook;
1496 void (*xs_hook)(void);
992 1497
993 if (SvROK (coro_sv)) 1498 if (SvROK (coro_sv))
994 coro_sv = SvRV (coro_sv); 1499 coro_sv = SvRV (coro_sv);
995 1500
996 coro = SvSTATE (coro_sv); 1501 coro = SvSTATE (coro_sv);
… …
999 return 0; 1504 return 0;
1000 1505
1001 coro->flags |= CF_READY; 1506 coro->flags |= CF_READY;
1002 1507
1003 LOCK; 1508 LOCK;
1509
1510 sv_hook = coro_nready ? 0 : coro_readyhook;
1511 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1512
1004 coro_enq (SvREFCNT_inc (coro_sv)); 1513 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1005 ++coro_nready; 1514 ++coro_nready;
1515
1006 UNLOCK; 1516 UNLOCK;
1517
1518 if (sv_hook)
1519 {
1520 dSP;
1521
1522 ENTER;
1523 SAVETMPS;
1524
1525 PUSHMARK (SP);
1526 PUTBACK;
1527 call_sv (sv_hook, G_DISCARD);
1528 SPAGAIN;
1529
1530 FREETMPS;
1531 LEAVE;
1532 }
1533
1534 if (xs_hook)
1535 xs_hook ();
1007 1536
1008 return 1; 1537 return 1;
1009} 1538}
1010 1539
1011static int 1540static int
1012api_is_ready (SV *coro_sv) 1541api_is_ready (SV *coro_sv)
1013{ 1542{
1543 dTHX;
1014 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1544 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015} 1545}
1016 1546
1017static void 1547static void
1018prepare_schedule (struct transfer_args *ta) 1548prepare_schedule (pTHX_ struct transfer_args *ta)
1019{ 1549{
1020 SV *prev_sv, *next_sv; 1550 SV *prev_sv, *next_sv;
1021 1551
1022 for (;;) 1552 for (;;)
1023 { 1553 {
1024 LOCK; 1554 LOCK;
1025 next_sv = coro_deq (PRIO_MIN); 1555 next_sv = coro_deq (aTHX);
1026 UNLOCK;
1027 1556
1028 /* nothing to schedule: call the idle handler */ 1557 /* nothing to schedule: call the idle handler */
1029 if (!next_sv) 1558 if (expect_false (!next_sv))
1030 { 1559 {
1031 dSP; 1560 dSP;
1561 UNLOCK;
1032 1562
1033 ENTER; 1563 ENTER;
1034 SAVETMPS; 1564 SAVETMPS;
1035 1565
1036 PUSHMARK (SP); 1566 PUSHMARK (SP);
1037 PUTBACK; 1567 PUTBACK;
1038 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1039 1570
1040 FREETMPS; 1571 FREETMPS;
1041 LEAVE; 1572 LEAVE;
1042 continue; 1573 continue;
1043 } 1574 }
1044 1575
1045 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE (next_sv);
1046 1577
1047 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1048 if (ta->next->flags & CF_DESTROYED) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1049 { 1580 {
1581 UNLOCK;
1050 SvREFCNT_dec (next_sv); 1582 SvREFCNT_dec (next_sv);
1051 /* coro_nready is already taken care of by destroy */ 1583 /* coro_nready is already taken care of by destroy */
1052 continue; 1584 continue;
1053 } 1585 }
1054 1586
1055 LOCK;
1056 --coro_nready; 1587 --coro_nready;
1057 UNLOCK; 1588 UNLOCK;
1058 break; 1589 break;
1059 } 1590 }
1060 1591
1061 /* free this only after the transfer */ 1592 /* free this only after the transfer */
1062 prev_sv = SvRV (coro_current); 1593 prev_sv = SvRV (coro_current);
1063 SvRV_set (coro_current, next_sv);
1064 ta->prev = SvSTATE (prev_sv); 1594 ta->prev = SvSTATE (prev_sv);
1065 1595 TRANSFER_CHECK (*ta);
1066 assert (ta->next->flags & CF_READY); 1596 assert (ta->next->flags & CF_READY);
1067 ta->next->flags &= ~CF_READY; 1597 ta->next->flags &= ~CF_READY;
1598 SvRV_set (coro_current, next_sv);
1068 1599
1069 LOCK; 1600 LOCK;
1070 free_coro_mortal (); 1601 free_coro_mortal (aTHX);
1071 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1072 UNLOCK; 1603 UNLOCK;
1073} 1604}
1074 1605
1075static void 1606static void
1076prepare_cede (struct transfer_args *ta) 1607prepare_cede (pTHX_ struct transfer_args *ta)
1077{ 1608{
1078 api_ready (coro_current); 1609 api_ready (coro_current);
1079 prepare_schedule (ta); 1610 prepare_schedule (aTHX_ ta);
1080} 1611}
1081 1612
1082static int 1613static int
1083prepare_cede_notself (struct transfer_args *ta) 1614prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084{ 1615{
1085 if (coro_nready) 1616 if (coro_nready)
1086 { 1617 {
1087 SV *prev = SvRV (coro_current); 1618 SV *prev = SvRV (coro_current);
1088 prepare_schedule (ta); 1619 prepare_schedule (aTHX_ ta);
1089 api_ready (prev); 1620 api_ready (prev);
1090 return 1; 1621 return 1;
1091 } 1622 }
1092 else 1623 else
1093 return 0; 1624 return 0;
1094} 1625}
1095 1626
1096static void 1627static void
1097api_schedule (void) 1628api_schedule (void)
1098{ 1629{
1630 dTHX;
1099 struct transfer_args ta; 1631 struct transfer_args ta;
1100 1632
1101 prepare_schedule (&ta); 1633 prepare_schedule (aTHX_ &ta);
1102 TRANSFER (ta); 1634 TRANSFER (ta, 1);
1103} 1635}
1104 1636
1105static int 1637static int
1106api_cede (void) 1638api_cede (void)
1107{ 1639{
1640 dTHX;
1108 struct transfer_args ta; 1641 struct transfer_args ta;
1109 1642
1110 prepare_cede (&ta); 1643 prepare_cede (aTHX_ &ta);
1111 1644
1112 if (ta.prev != ta.next) 1645 if (expect_true (ta.prev != ta.next))
1113 { 1646 {
1114 TRANSFER (ta); 1647 TRANSFER (ta, 1);
1115 return 1; 1648 return 1;
1116 } 1649 }
1117 else 1650 else
1118 return 0; 1651 return 0;
1119} 1652}
1120 1653
1121static int 1654static int
1122api_cede_notself (void) 1655api_cede_notself (void)
1123{ 1656{
1657 dTHX;
1124 struct transfer_args ta; 1658 struct transfer_args ta;
1125 1659
1126 if (prepare_cede_notself (&ta)) 1660 if (prepare_cede_notself (aTHX_ &ta))
1127 { 1661 {
1128 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1129 return 1; 1663 return 1;
1130 } 1664 }
1131 else 1665 else
1132 return 0; 1666 return 0;
1133} 1667}
1134 1668
1669static void
1670api_trace (SV *coro_sv, int flags)
1671{
1672 dTHX;
1673 struct coro *coro = SvSTATE (coro_sv);
1674
1675 if (flags & CC_TRACE)
1676 {
1677 if (!coro->cctx)
1678 coro->cctx = cctx_new_run ();
1679 else if (!(coro->cctx->flags & CC_TRACE))
1680 croak ("cannot enable tracing on coroutine with custom stack");
1681
1682 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1683 }
1684 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1685 {
1686 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1687
1688 if (coro->flags & CF_RUNNING)
1689 PL_runops = RUNOPS_DEFAULT;
1690 else
1691 coro->slot->runops = RUNOPS_DEFAULT;
1692 }
1693}
1694
1695#if 0
1696static int
1697coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1698{
1699 AV *padlist;
1700 AV *av = (AV *)mg->mg_obj;
1701
1702 abort ();
1703
1704 return 0;
1705}
1706
1707static MGVTBL coro_gensub_vtbl = {
1708 0, 0, 0, 0,
1709 coro_gensub_free
1710};
1711#endif
1712
1713/*****************************************************************************/
1714/* PerlIO::cede */
1715
1716typedef struct
1717{
1718 PerlIOBuf base;
1719 NV next, every;
1720} PerlIOCede;
1721
1722static IV
1723PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726
1727 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1728 self->next = nvtime () + self->every;
1729
1730 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1731}
1732
1733static SV *
1734PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1735{
1736 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1737
1738 return newSVnv (self->every);
1739}
1740
1741static IV
1742PerlIOCede_flush (pTHX_ PerlIO *f)
1743{
1744 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1745 double now = nvtime ();
1746
1747 if (now >= self->next)
1748 {
1749 api_cede ();
1750 self->next = now + self->every;
1751 }
1752
1753 return PerlIOBuf_flush (aTHX_ f);
1754}
1755
1756static PerlIO_funcs PerlIO_cede =
1757{
1758 sizeof(PerlIO_funcs),
1759 "cede",
1760 sizeof(PerlIOCede),
1761 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1762 PerlIOCede_pushed,
1763 PerlIOBuf_popped,
1764 PerlIOBuf_open,
1765 PerlIOBase_binmode,
1766 PerlIOCede_getarg,
1767 PerlIOBase_fileno,
1768 PerlIOBuf_dup,
1769 PerlIOBuf_read,
1770 PerlIOBuf_unread,
1771 PerlIOBuf_write,
1772 PerlIOBuf_seek,
1773 PerlIOBuf_tell,
1774 PerlIOBuf_close,
1775 PerlIOCede_flush,
1776 PerlIOBuf_fill,
1777 PerlIOBase_eof,
1778 PerlIOBase_error,
1779 PerlIOBase_clearerr,
1780 PerlIOBase_setlinebuf,
1781 PerlIOBuf_get_base,
1782 PerlIOBuf_bufsiz,
1783 PerlIOBuf_get_ptr,
1784 PerlIOBuf_get_cnt,
1785 PerlIOBuf_set_ptrcnt,
1786};
1787
1788
1135MODULE = Coro::State PACKAGE = Coro::State 1789MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136 1790
1137PROTOTYPES: DISABLE 1791PROTOTYPES: DISABLE
1138 1792
1139BOOT: 1793BOOT:
1140{ 1794{
1141#ifdef USE_ITHREADS 1795#ifdef USE_ITHREADS
1142 MUTEX_INIT (&coro_mutex); 1796 MUTEX_INIT (&coro_lock);
1797# if CORO_PTHREAD
1798 coro_thx = PERL_GET_CONTEXT;
1799# endif
1143#endif 1800#endif
1144 BOOT_PAGESIZE; 1801 BOOT_PAGESIZE;
1145 1802
1803 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1804 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1805
1806 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1807 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1808 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1809
1810 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1811 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1812 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1813
1146 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1814 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147 1815
1816 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1817 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1818 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1819 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153 1820
1154 main_mainstack = PL_mainstack; 1821 main_mainstack = PL_mainstack;
1822 main_top_env = PL_top_env;
1155 1823
1824 while (main_top_env->je_prev)
1825 main_top_env = main_top_env->je_prev;
1826
1156 coroapi.ver = CORO_API_VERSION; 1827 coroapi.ver = CORO_API_VERSION;
1828 coroapi.rev = CORO_API_REVISION;
1157 coroapi.transfer = api_transfer; 1829 coroapi.transfer = api_transfer;
1830
1831 {
1832 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1833
1834 if (!svp) croak ("Time::HiRes is required");
1835 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1836
1837 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1838 }
1158 1839
1159 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1840 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1160} 1841}
1161 1842
1162SV * 1843SV *
1163new (char *klass, ...) 1844new (char *klass, ...)
1164 CODE: 1845 CODE:
1165{ 1846{
1166 struct coro *coro; 1847 struct coro *coro;
1848 MAGIC *mg;
1167 HV *hv; 1849 HV *hv;
1168 int i; 1850 int i;
1169 1851
1170 Newz (0, coro, 1, struct coro); 1852 Newz (0, coro, 1, struct coro);
1171 coro->args = newAV (); 1853 coro->args = newAV ();
1172 coro->save = CORO_SAVE_ALL;
1173 coro->flags = CF_NEW; 1854 coro->flags = CF_NEW;
1174 1855
1856 if (coro_first) coro_first->prev = coro;
1857 coro->next = coro_first;
1858 coro_first = coro;
1859
1175 hv = newHV (); 1860 coro->hv = hv = newHV ();
1176 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1861 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1862 mg->mg_flags |= MGf_DUP;
1177 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1863 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178 1864
1865 av_extend (coro->args, items - 1);
1179 for (i = 1; i < items; i++) 1866 for (i = 1; i < items; i++)
1180 av_push (coro->args, newSVsv (ST (i))); 1867 av_push (coro->args, newSVsv (ST (i)));
1181} 1868}
1182 OUTPUT: 1869 OUTPUT:
1183 RETVAL 1870 RETVAL
1184 1871
1185int 1872# these not obviously related functions are all rolled into the same xs
1186save (SV *coro, int new_save = -1) 1873# function to increase chances that they all will call transfer with the same
1187 CODE: 1874# stack offset
1188 RETVAL = api_save (coro, new_save);
1189 OUTPUT:
1190 RETVAL
1191
1192void 1875void
1193_set_stacklevel (...) 1876_set_stacklevel (...)
1194 ALIAS: 1877 ALIAS:
1195 Coro::State::transfer = 1 1878 Coro::State::transfer = 1
1196 Coro::schedule = 2 1879 Coro::schedule = 2
… …
1198 Coro::cede_notself = 4 1881 Coro::cede_notself = 4
1199 CODE: 1882 CODE:
1200{ 1883{
1201 struct transfer_args ta; 1884 struct transfer_args ta;
1202 1885
1886 PUTBACK;
1203 switch (ix) 1887 switch (ix)
1204 { 1888 {
1205 case 0: 1889 case 0:
1206 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1890 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1207 ta.next = 0; 1891 ta.next = 0;
1208 break; 1892 break;
1209 1893
1210 case 1: 1894 case 1:
1211 if (items != 2) 1895 if (items != 2)
1212 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1896 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1213 1897
1214 prepare_transfer (&ta, ST (0), ST (1)); 1898 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215 break; 1899 break;
1216 1900
1217 case 2: 1901 case 2:
1218 prepare_schedule (&ta); 1902 prepare_schedule (aTHX_ &ta);
1219 break; 1903 break;
1220 1904
1221 case 3: 1905 case 3:
1222 prepare_cede (&ta); 1906 prepare_cede (aTHX_ &ta);
1223 break; 1907 break;
1224 1908
1225 case 4: 1909 case 4:
1226 if (!prepare_cede_notself (&ta)) 1910 if (!prepare_cede_notself (aTHX_ &ta))
1227 XSRETURN_EMPTY; 1911 XSRETURN_EMPTY;
1228 1912
1229 break; 1913 break;
1230 } 1914 }
1915 SPAGAIN;
1231 1916
1232 BARRIER; 1917 BARRIER;
1918 PUTBACK;
1233 TRANSFER (ta); 1919 TRANSFER (ta, 0);
1234 1920 SPAGAIN; /* might be the sp of a different coroutine now */
1235 if (GIMME_V != G_VOID && ta.next != ta.prev) 1921 /* be extra careful not to ever do anything after TRANSFER */
1236 XSRETURN_YES;
1237} 1922}
1238 1923
1239bool 1924bool
1240_destroy (SV *coro_sv) 1925_destroy (SV *coro_sv)
1241 CODE: 1926 CODE:
1242 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1927 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243 OUTPUT: 1928 OUTPUT:
1244 RETVAL 1929 RETVAL
1245 1930
1246void 1931void
1247_exit (code) 1932_exit (int code)
1248 int code
1249 PROTOTYPE: $ 1933 PROTOTYPE: $
1250 CODE: 1934 CODE:
1251 _exit (code); 1935 _exit (code);
1936
1937int
1938cctx_stacksize (int new_stacksize = 0)
1939 CODE:
1940 RETVAL = cctx_stacksize;
1941 if (new_stacksize)
1942 {
1943 cctx_stacksize = new_stacksize;
1944 ++cctx_gen;
1945 }
1946 OUTPUT:
1947 RETVAL
1948
1949int
1950cctx_max_idle (int max_idle = 0)
1951 CODE:
1952 RETVAL = cctx_max_idle;
1953 if (max_idle > 1)
1954 cctx_max_idle = max_idle;
1955 OUTPUT:
1956 RETVAL
1252 1957
1253int 1958int
1254cctx_count () 1959cctx_count ()
1255 CODE: 1960 CODE:
1256 RETVAL = cctx_count; 1961 RETVAL = cctx_count;
… …
1262 CODE: 1967 CODE:
1263 RETVAL = cctx_idle; 1968 RETVAL = cctx_idle;
1264 OUTPUT: 1969 OUTPUT:
1265 RETVAL 1970 RETVAL
1266 1971
1972void
1973list ()
1974 PPCODE:
1975{
1976 struct coro *coro;
1977 for (coro = coro_first; coro; coro = coro->next)
1978 if (coro->hv)
1979 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1980}
1981
1982void
1983call (Coro::State coro, SV *coderef)
1984 ALIAS:
1985 eval = 1
1986 CODE:
1987{
1988 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1989 {
1990 struct coro temp;
1991
1992 if (!(coro->flags & CF_RUNNING))
1993 {
1994 PUTBACK;
1995 save_perl (aTHX_ &temp);
1996 load_perl (aTHX_ coro);
1997 }
1998
1999 {
2000 dSP;
2001 ENTER;
2002 SAVETMPS;
2003 PUTBACK;
2004 PUSHSTACK;
2005 PUSHMARK (SP);
2006
2007 if (ix)
2008 eval_sv (coderef, 0);
2009 else
2010 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2011
2012 POPSTACK;
2013 SPAGAIN;
2014 FREETMPS;
2015 LEAVE;
2016 PUTBACK;
2017 }
2018
2019 if (!(coro->flags & CF_RUNNING))
2020 {
2021 save_perl (aTHX_ coro);
2022 load_perl (aTHX_ &temp);
2023 SPAGAIN;
2024 }
2025 }
2026}
2027
2028SV *
2029is_ready (Coro::State coro)
2030 PROTOTYPE: $
2031 ALIAS:
2032 is_ready = CF_READY
2033 is_running = CF_RUNNING
2034 is_new = CF_NEW
2035 is_destroyed = CF_DESTROYED
2036 CODE:
2037 RETVAL = boolSV (coro->flags & ix);
2038 OUTPUT:
2039 RETVAL
2040
2041void
2042api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2043
2044SV *
2045has_cctx (Coro::State coro)
2046 PROTOTYPE: $
2047 CODE:
2048 RETVAL = boolSV (!!coro->cctx);
2049 OUTPUT:
2050 RETVAL
2051
2052int
2053is_traced (Coro::State coro)
2054 PROTOTYPE: $
2055 CODE:
2056 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2057 OUTPUT:
2058 RETVAL
2059
2060UV
2061rss (Coro::State coro)
2062 PROTOTYPE: $
2063 ALIAS:
2064 usecount = 1
2065 CODE:
2066 switch (ix)
2067 {
2068 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2069 case 1: RETVAL = coro->usecount; break;
2070 }
2071 OUTPUT:
2072 RETVAL
2073
2074void
2075force_cctx ()
2076 CODE:
2077 struct coro *coro = SvSTATE (coro_current);
2078 coro->cctx->idle_sp = 0;
2079
2080void
2081swap_defsv (Coro::State self)
2082 PROTOTYPE: $
2083 ALIAS:
2084 swap_defav = 1
2085 CODE:
2086 if (!self->slot)
2087 croak ("cannot swap state with coroutine that has no saved state");
2088 else
2089 {
2090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2092
2093 SV *tmp = *src; *src = *dst; *dst = tmp;
2094 }
2095
1267MODULE = Coro::State PACKAGE = Coro 2096MODULE = Coro::State PACKAGE = Coro
1268 2097
1269BOOT: 2098BOOT:
1270{ 2099{
1271 int i; 2100 int i;
1272 2101
2102 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2105
2106 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2107 SvREADONLY_on (coro_current);
2108
1273 coro_stash = gv_stashpv ("Coro", TRUE); 2109 coro_stash = gv_stashpv ("Coro", TRUE);
1274 2110
1275 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2113 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2114 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2115 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2116 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281 2117
1282 coro_current = get_sv ("Coro::current", FALSE);
1283 SvREADONLY_on (coro_current);
1284
1285 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286 coro_ready[i] = newAV (); 2119 coro_ready[i] = newAV ();
1287 2120
1288 { 2121 {
1289 SV *sv = perl_get_sv("Coro::API", 1); 2122 SV *sv = perl_get_sv ("Coro::API", TRUE);
2123 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1290 2124
1291 coroapi.schedule = api_schedule; 2125 coroapi.schedule = api_schedule;
1292 coroapi.save = api_save;
1293 coroapi.cede = api_cede; 2126 coroapi.cede = api_cede;
1294 coroapi.cede_notself = api_cede_notself; 2127 coroapi.cede_notself = api_cede_notself;
1295 coroapi.ready = api_ready; 2128 coroapi.ready = api_ready;
1296 coroapi.is_ready = api_is_ready; 2129 coroapi.is_ready = api_is_ready;
1297 coroapi.nready = &coro_nready; 2130 coroapi.nready = &coro_nready;
… …
1306void 2139void
1307_set_current (SV *current) 2140_set_current (SV *current)
1308 PROTOTYPE: $ 2141 PROTOTYPE: $
1309 CODE: 2142 CODE:
1310 SvREFCNT_dec (SvRV (coro_current)); 2143 SvREFCNT_dec (SvRV (coro_current));
1311 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2144 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2145
2146void
2147_set_readyhook (SV *hook)
2148 PROTOTYPE: $
2149 CODE:
2150 LOCK;
2151 SvREFCNT_dec (coro_readyhook);
2152 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2153 UNLOCK;
1312 2154
1313int 2155int
1314prio (Coro::State coro, int newprio = 0) 2156prio (Coro::State coro, int newprio = 0)
1315 ALIAS: 2157 ALIAS:
1316 nice = 1 2158 nice = 1
… …
1338 CODE: 2180 CODE:
1339 RETVAL = boolSV (api_ready (self)); 2181 RETVAL = boolSV (api_ready (self));
1340 OUTPUT: 2182 OUTPUT:
1341 RETVAL 2183 RETVAL
1342 2184
1343SV *
1344is_ready (SV *self)
1345 PROTOTYPE: $
1346 CODE:
1347 RETVAL = boolSV (api_is_ready (self));
1348 OUTPUT:
1349 RETVAL
1350
1351int 2185int
1352nready (...) 2186nready (...)
1353 PROTOTYPE: 2187 PROTOTYPE:
1354 CODE: 2188 CODE:
1355 RETVAL = coro_nready; 2189 RETVAL = coro_nready;
1356 OUTPUT: 2190 OUTPUT:
1357 RETVAL 2191 RETVAL
1358 2192
2193void
2194throw (Coro::State self, SV *throw = &PL_sv_undef)
2195 PROTOTYPE: $;$
2196 CODE:
2197 SvREFCNT_dec (self->throw);
2198 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2199
2200# for async_pool speedup
2201void
2202_pool_1 (SV *cb)
2203 CODE:
2204{
2205 struct coro *coro = SvSTATE (coro_current);
2206 HV *hv = (HV *)SvRV (coro_current);
2207 AV *defav = GvAV (PL_defgv);
2208 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2209 AV *invoke_av;
2210 int i, len;
2211
2212 if (!invoke)
2213 {
2214 SV *old = PL_diehook;
2215 PL_diehook = 0;
2216 SvREFCNT_dec (old);
2217 croak ("\3async_pool terminate\2\n");
2218 }
2219
2220 SvREFCNT_dec (coro->saved_deffh);
2221 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2222
2223 hv_store (hv, "desc", sizeof ("desc") - 1,
2224 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2225
2226 invoke_av = (AV *)SvRV (invoke);
2227 len = av_len (invoke_av);
2228
2229 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2230
2231 if (len > 0)
2232 {
2233 av_fill (defav, len - 1);
2234 for (i = 0; i < len; ++i)
2235 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2236 }
2237
2238 SvREFCNT_dec (invoke);
2239}
2240
2241void
2242_pool_2 (SV *cb)
2243 CODE:
2244{
2245 struct coro *coro = SvSTATE (coro_current);
2246
2247 sv_setsv (cb, &PL_sv_undef);
2248
2249 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2250 coro->saved_deffh = 0;
2251
2252 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2253 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2254 {
2255 SV *old = PL_diehook;
2256 PL_diehook = 0;
2257 SvREFCNT_dec (old);
2258 croak ("\3async_pool terminate\2\n");
2259 }
2260
2261 av_clear (GvAV (PL_defgv));
2262 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2263 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2264
2265 coro->prio = 0;
2266
2267 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2268 api_trace (coro_current, 0);
2269
2270 av_push (av_async_pool, newSVsv (coro_current));
2271}
2272
2273#if 0
2274
2275void
2276_generator_call (...)
2277 PROTOTYPE: @
2278 PPCODE:
2279 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2280 xxxx
2281 abort ();
2282
2283SV *
2284gensub (SV *sub, ...)
2285 PROTOTYPE: &;@
2286 CODE:
2287{
2288 struct coro *coro;
2289 MAGIC *mg;
2290 CV *xcv;
2291 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2292 int i;
2293
2294 CvGV (ncv) = CvGV (cv);
2295 CvFILE (ncv) = CvFILE (cv);
2296
2297 Newz (0, coro, 1, struct coro);
2298 coro->args = newAV ();
2299 coro->flags = CF_NEW;
2300
2301 av_extend (coro->args, items - 1);
2302 for (i = 1; i < items; i++)
2303 av_push (coro->args, newSVsv (ST (i)));
2304
2305 CvISXSUB_on (ncv);
2306 CvXSUBANY (ncv).any_ptr = (void *)coro;
2307
2308 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2309
2310 CvXSUB (ncv) = CvXSUB (xcv);
2311 CvANON_on (ncv);
2312
2313 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2314 RETVAL = newRV_noinc ((SV *)ncv);
2315}
2316 OUTPUT:
2317 RETVAL
2318
2319#endif
2320
2321
1359MODULE = Coro::State PACKAGE = Coro::AIO 2322MODULE = Coro::State PACKAGE = Coro::AIO
1360 2323
1361SV * 2324void
1362_get_state () 2325_get_state (SV *self)
1363 CODE: 2326 PPCODE:
1364{ 2327{
1365 struct io_state *data; 2328 AV *defav = GvAV (PL_defgv);
1366 2329 AV *av = newAV ();
2330 int i;
1367 RETVAL = newSV (sizeof (struct io_state)); 2331 SV *data_sv = newSV (sizeof (struct io_state));
1368 data = (struct io_state *)SvPVX (RETVAL); 2332 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1369 SvCUR_set (RETVAL, sizeof (struct io_state)); 2333 SvCUR_set (data_sv, sizeof (struct io_state));
1370 SvPOK_only (RETVAL); 2334 SvPOK_only (data_sv);
1371 2335
1372 data->errorno = errno; 2336 data->errorno = errno;
1373 data->laststype = PL_laststype; 2337 data->laststype = PL_laststype;
1374 data->laststatval = PL_laststatval; 2338 data->laststatval = PL_laststatval;
1375 data->statcache = PL_statcache; 2339 data->statcache = PL_statcache;
2340
2341 av_extend (av, AvFILLp (defav) + 1 + 1);
2342
2343 for (i = 0; i <= AvFILLp (defav); ++i)
2344 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2345
2346 av_push (av, data_sv);
2347
2348 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2349
2350 api_ready (self);
1376} 2351}
1377 OUTPUT:
1378 RETVAL
1379 2352
1380void 2353void
1381_set_state (char *data_) 2354_set_state (SV *state)
1382 PROTOTYPE: $ 2355 PROTOTYPE: $
1383 CODE: 2356 PPCODE:
1384{ 2357{
1385 struct io_state *data = (void *)data_; 2358 AV *av = (AV *)SvRV (state);
2359 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2360 int i;
1386 2361
1387 errno = data->errorno; 2362 errno = data->errorno;
1388 PL_laststype = data->laststype; 2363 PL_laststype = data->laststype;
1389 PL_laststatval = data->laststatval; 2364 PL_laststatval = data->laststatval;
1390 PL_statcache = data->statcache; 2365 PL_statcache = data->statcache;
1391}
1392 2366
2367 EXTEND (SP, AvFILLp (av));
2368 for (i = 0; i < AvFILLp (av); ++i)
2369 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2370}
2371
2372
2373MODULE = Coro::State PACKAGE = Coro::AnyEvent
2374
2375BOOT:
2376 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2377
2378SV *
2379_schedule (...)
2380 PROTOTYPE: @
2381 CODE:
2382{
2383 static int incede;
2384
2385 api_cede_notself ();
2386
2387 ++incede;
2388 while (coro_nready >= incede && api_cede ())
2389 ;
2390
2391 sv_setsv (sv_activity, &PL_sv_undef);
2392 if (coro_nready >= incede)
2393 {
2394 PUSHMARK (SP);
2395 PUTBACK;
2396 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2397 SPAGAIN;
2398 }
2399
2400 --incede;
2401}
2402
2403
2404MODULE = Coro::State PACKAGE = PerlIO::cede
2405
2406BOOT:
2407 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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