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Comparing Coro/Coro/State.xs (file contents):
Revision 1.102 by root, Mon Nov 27 01:28:03 2006 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"
12
13#include <stdio.h>
14#include <errno.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
25
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
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)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4;
8 58
9#define PERL_VERSION_ATLEAST(a,b,c) \ 59#define PERL_VERSION_ATLEAST(a,b,c) \
10 (PERL_REVISION > (a) \ 60 (PERL_REVISION > (a) \
11 || (PERL_REVISION == (a) \ 61 || (PERL_REVISION == (a) \
12 && (PERL_VERSION > (b) \ 62 && (PERL_VERSION > (b) \
… …
31# ifndef IS_PADCONST 81# ifndef IS_PADCONST
32# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
33# endif 83# endif
34#endif 84#endif
35 85
36#include <stdio.h> 86/* 5.11 */
37#include <errno.h> 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
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
38 108
39#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
40# undef STACKGUARD 110# undef CORO_STACKGUARD
41#endif
42
43#ifndef STACKGUARD
44# define STACKGUARD 0
45#endif
46
47#ifdef HAVE_MMAP
48# include <unistd.h>
49# include <sys/mman.h>
50# ifndef MAP_ANONYMOUS
51# ifdef MAP_ANON
52# define MAP_ANONYMOUS MAP_ANON
53# else
54# undef HAVE_MMAP
55# endif
56# endif 111#endif
57# include <limits.h> 112
58# ifndef PAGESIZE 113#ifndef CORO_STACKGUARD
59# define PAGESIZE pagesize 114# define CORO_STACKGUARD 0
60# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
61static long pagesize;
62# else
63# define BOOT_PAGESIZE
64# endif 115#endif
65#endif
66 116
67/* The next macro should declare a variable stacklevel that contains and approximation 117/* prefer perl internal functions over our own? */
68 * to the current C stack pointer. Its property is that it changes with each call 118#ifndef CORO_PREFER_PERL_FUNCTIONS
69 * and should be unique. */ 119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif
121
122/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */
70#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
71#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
72 126
73#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
74 128
75#if __GNUC__ >= 3 129#if __GNUC__ >= 3
76# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
77#else 133#else
78# define attribute(x) 134# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr)
79#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
80 141
81#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
82 143
83#include "CoroAPI.h" 144#include "CoroAPI.h"
84 145
85#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
86
87#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
88static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
89# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
90# 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
91#else 155#else
156
92# define LOCK (void)0 157# define LOCK (void)0
93# define UNLOCK (void)0 158# define UNLOCK (void)0
94#endif
95 159
160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE;
96static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
97static 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;
98static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
99static 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;
200
201static struct coro_cctx *cctx_first;
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};
100 212
101/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
102typedef struct coro_stack { 214typedef struct coro_cctx {
103 struct coro_stack *next; 215 struct coro_cctx *next;
104 216
105 /* the stack */ 217 /* the stack */
106 void *sptr; 218 void *sptr;
107 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
108 220
109 /* cpu state */ 221 /* cpu state */
110 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
111 JMPENV *top_env; 224 JMPENV *top_env;
112 coro_context cctx; 225 coro_context cctx;
113} coro_stack; 226
227 U32 gen;
228#if CORO_USE_VALGRIND
229 int valgrind_id;
230#endif
231 unsigned char flags;
232} coro_cctx;
233
234enum {
235 CF_RUNNING = 0x0001, /* coroutine is running */
236 CF_READY = 0x0002, /* coroutine is ready */
237 CF_NEW = 0x0004, /* has never been switched to */
238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
239};
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))
114 253
115/* this is a structure representing a perl-level coroutine */ 254/* this is a structure representing a perl-level coroutine */
116struct coro { 255struct coro {
117 /* the c coroutine allocated to this perl coroutine, if any */ 256 /* the c coroutine allocated to this perl coroutine, if any */
118 coro_stack *stack; 257 coro_cctx *cctx;
119 258
120 /* data associated with this coroutine (initial args) */ 259 /* process data */
121 AV *args;
122 int refcnt;
123
124 /* optionally saved, might be zero */
125 AV *defav;
126 SV *defsv;
127 SV *errsv;
128
129 /* saved global state not related to stacks */
130 U8 dowarn;
131 I32 in_eval;
132
133 /* the stacks and related info (callchain etc..) */
134 PERL_SI *curstackinfo;
135 AV *curstack;
136 AV *mainstack; 260 AV *mainstack;
137 SV **stack_sp; 261 perl_slots *slot; /* basically the saved sp */
138 OP *op; 262
139 SV **curpad; 263 AV *args; /* data associated with this coroutine (initial args) */
140 AV *comppad; 264 int refcnt; /* coroutines are refcounted, yes */
141 CV *compcv; 265 int flags; /* CF_ flags */
142 SV **stack_base; 266 HV *hv; /* the perl hash associated with this coro, if any */
143 SV **stack_max; 267
144 SV **tmps_stack; 268 /* statistics */
145 I32 tmps_floor; 269 int usecount; /* number of transfers to this coro */
146 I32 tmps_ix;
147 I32 tmps_max;
148 I32 *markstack;
149 I32 *markstack_ptr;
150 I32 *markstack_max;
151 I32 *scopestack;
152 I32 scopestack_ix;
153 I32 scopestack_max;
154 ANY *savestack;
155 I32 savestack_ix;
156 I32 savestack_max;
157 OP **retstack;
158 I32 retstack_ix;
159 I32 retstack_max;
160 PMOP *curpm;
161 COP *curcop;
162 270
163 /* coro process data */ 271 /* coro process data */
164 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;
165}; 280};
166 281
167typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
168typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
169 284
285/** Coro ********************************************************************/
286
287#define PRIO_MAX 3
288#define PRIO_HIGH 1
289#define PRIO_NORMAL 0
290#define PRIO_LOW -1
291#define PRIO_IDLE -3
292#define PRIO_MIN -4
293
294/* for Coro.pm */
295static SV *coro_current;
296static SV *coro_readyhook;
297static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
298static int coro_nready;
299static struct coro *coro_first;
300
301/** lowlevel stuff **********************************************************/
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
170static 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 *
171coro_clone_padlist (CV *cv) 334coro_clone_padlist (pTHX_ CV *cv)
172{ 335{
173 AV *padlist = CvPADLIST (cv); 336 AV *padlist = CvPADLIST (cv);
174 AV *newpadlist, *newpad; 337 AV *newpadlist, *newpad;
175 338
176 newpadlist = newAV (); 339 newpadlist = newAV ();
177 AvREAL_off (newpadlist); 340 AvREAL_off (newpadlist);
178#if PERL_VERSION_ATLEAST (5,9,0) 341#if PERL_VERSION_ATLEAST (5,10,0)
179 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 342 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
180#else 343#else
181 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 344 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
182#endif 345#endif
183 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 346 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
184 --AvFILLp (padlist); 347 --AvFILLp (padlist);
185 348
186 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 349 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
187 av_store (newpadlist, 1, (SV *)newpad); 350 av_store (newpadlist, 1, (SV *)newpad);
188 351
189 return newpadlist; 352 return newpadlist;
190} 353}
191 354
192static void 355static void
193free_padlist (AV *padlist) 356free_padlist (pTHX_ AV *padlist)
194{ 357{
195 /* may be during global destruction */ 358 /* may be during global destruction */
196 if (SvREFCNT (padlist)) 359 if (SvREFCNT (padlist))
197 { 360 {
198 I32 i = AvFILLp (padlist); 361 I32 i = AvFILLp (padlist);
… …
219 AV *padlist; 382 AV *padlist;
220 AV *av = (AV *)mg->mg_obj; 383 AV *av = (AV *)mg->mg_obj;
221 384
222 /* casting is fun. */ 385 /* casting is fun. */
223 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 386 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
224 free_padlist (padlist); 387 free_padlist (aTHX_ padlist);
225 388
226 SvREFCNT_dec (av); 389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
227 390
228 return 0; 391 return 0;
229} 392}
230 393
231#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
232 396
233static 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};
401
402#define CORO_MAGIC(sv, type) \
403 SvMAGIC (sv) \
404 ? SvMAGIC (sv)->mg_type == type \
405 ? SvMAGIC (sv) \
406 : mg_find (sv, type) \
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))
234 437
235/* the next two functions merely cache the padlists */ 438/* the next two functions merely cache the padlists */
236static void 439static void
237get_padlist (CV *cv) 440get_padlist (pTHX_ CV *cv)
238{ 441{
239 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
443 AV *av;
240 444
241 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 445 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
242 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 446 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243 else 447 else
244 { 448 {
245#if 0 449#if CORO_PREFER_PERL_FUNCTIONS
246 /* this is probably cleaner, but also slower? */ 450 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */
247 CV *cp = Perl_cv_clone (cv); 452 CV *cp = Perl_cv_clone (cv);
248 CvPADLIST (cv) = CvPADLIST (cp); 453 CvPADLIST (cv) = CvPADLIST (cp);
249 CvPADLIST (cp) = 0; 454 CvPADLIST (cp) = 0;
250 SvREFCNT_dec (cp); 455 SvREFCNT_dec (cp);
251#else 456#else
252 CvPADLIST (cv) = coro_clone_padlist (cv); 457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253#endif 458#endif
254 } 459 }
255} 460}
256 461
257static void 462static void
258put_padlist (CV *cv) 463put_padlist (pTHX_ CV *cv)
259{ 464{
260 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 465 MAGIC *mg = CORO_MAGIC_cv (cv);
466 AV *av;
261 467
262 if (!mg) 468 if (expect_false (!mg))
263 { 469 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
264 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
265 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
266 mg->mg_virtual = &vtbl_coro;
267 mg->mg_obj = (SV *)newAV ();
268 }
269 470
270 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); 471 av = (AV *)mg->mg_obj;
271}
272 472
273#define SB do { 473 if (expect_false (AvFILLp (av) >= AvMAX (av)))
274#define SE } while (0) 474 av_extend (av, AvMAX (av) + 1);
275 475
276#define LOAD(state) load_state((state)); 476 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277#define SAVE(state,flags) save_state((state),(flags)); 477}
278 478
279#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE 479/** load & save, init *******************************************************/
280 480
281static void 481static void
282load_state(Coro__State c) 482load_perl (pTHX_ Coro__State c)
283{ 483{
284 PL_dowarn = c->dowarn; 484 perl_slots *slot = c->slot;
285 PL_in_eval = c->in_eval; 485 c->slot = 0;
286 486
287 PL_curstackinfo = c->curstackinfo;
288 PL_curstack = c->curstack;
289 PL_mainstack = c->mainstack; 487 PL_mainstack = c->mainstack;
290 PL_stack_sp = c->stack_sp;
291 PL_op = c->op;
292 PL_curpad = c->curpad;
293 PL_comppad = c->comppad;
294 PL_compcv = c->compcv;
295 PL_stack_base = c->stack_base;
296 PL_stack_max = c->stack_max;
297 PL_tmps_stack = c->tmps_stack;
298 PL_tmps_floor = c->tmps_floor;
299 PL_tmps_ix = c->tmps_ix;
300 PL_tmps_max = c->tmps_max;
301 PL_markstack = c->markstack;
302 PL_markstack_ptr = c->markstack_ptr;
303 PL_markstack_max = c->markstack_max;
304 PL_scopestack = c->scopestack;
305 PL_scopestack_ix = c->scopestack_ix;
306 PL_scopestack_max = c->scopestack_max;
307 PL_savestack = c->savestack;
308 PL_savestack_ix = c->savestack_ix;
309 PL_savestack_max = c->savestack_max;
310#if !PERL_VERSION_ATLEAST (5,9,0)
311 PL_retstack = c->retstack;
312 PL_retstack_ix = c->retstack_ix;
313 PL_retstack_max = c->retstack_max;
314#endif
315 PL_curpm = c->curpm;
316 PL_curcop = c->curcop;
317 488
318 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 489 GvSV (PL_defgv) = slot->defsv;
319 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 490 GvAV (PL_defgv) = slot->defav;
320 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 491 GvSV (PL_errgv) = slot->errsv;
492 GvSV (irsgv) = slot->irsgv;
493
494 #define VAR(name,type) PL_ ## name = slot->name;
495 # include "state.h"
496 #undef VAR
321 497
322 { 498 {
323 dSP; 499 dSP;
500
324 CV *cv; 501 CV *cv;
325 502
326 /* now do the ugly restore mess */ 503 /* now do the ugly restore mess */
327 while ((cv = (CV *)POPs)) 504 while (expect_true (cv = (CV *)POPs))
328 { 505 {
329 AV *padlist = (AV *)POPs;
330
331 if (padlist)
332 {
333 put_padlist (cv); /* mark this padlist as available */ 506 put_padlist (aTHX_ cv); /* mark this padlist as available */
334 CvPADLIST(cv) = padlist; 507 CvDEPTH (cv) = PTR2IV (POPs);
335 } 508 CvPADLIST (cv) = (AV *)POPs;
336
337 ++CvDEPTH(cv);
338 } 509 }
339 510
340 PUTBACK; 511 PUTBACK;
341 } 512 }
342} 513}
343 514
344static void 515static void
345save_state(Coro__State c, int flags) 516save_perl (pTHX_ Coro__State c)
346{ 517{
347 { 518 {
348 dSP; 519 dSP;
349 I32 cxix = cxstack_ix; 520 I32 cxix = cxstack_ix;
350 PERL_CONTEXT *ccstk = cxstack; 521 PERL_CONTEXT *ccstk = cxstack;
… …
353 /* 524 /*
354 * 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
355 * (and reinitialize) all cv's in the whole callchain :( 526 * (and reinitialize) all cv's in the whole callchain :(
356 */ 527 */
357 528
358 PUSHs (Nullsv); 529 XPUSHs (Nullsv);
359 /* this loop was inspired by pp_caller */ 530 /* this loop was inspired by pp_caller */
360 for (;;) 531 for (;;)
361 { 532 {
362 while (cxix >= 0) 533 while (expect_true (cxix >= 0))
363 { 534 {
364 PERL_CONTEXT *cx = &ccstk[cxix--]; 535 PERL_CONTEXT *cx = &ccstk[cxix--];
365 536
366 if (CxTYPE(cx) == CXt_SUB) 537 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
367 { 538 {
368 CV *cv = cx->blk_sub.cv; 539 CV *cv = cx->blk_sub.cv;
540
369 if (CvDEPTH(cv)) 541 if (expect_true (CvDEPTH (cv)))
370 { 542 {
371 EXTEND (SP, CvDEPTH(cv)*2); 543 EXTEND (SP, 3);
372
373 while (--CvDEPTH(cv))
374 {
375 /* this tells the restore code to increment CvDEPTH */
376 PUSHs (Nullsv);
377 PUSHs ((SV *)cv);
378 }
379
380 PUSHs ((SV *)CvPADLIST(cv)); 544 PUSHs ((SV *)CvPADLIST (cv));
545 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
381 PUSHs ((SV *)cv); 546 PUSHs ((SV *)cv);
382 547
548 CvDEPTH (cv) = 0;
383 get_padlist (cv); 549 get_padlist (aTHX_ cv);
384 } 550 }
385 } 551 }
386#ifdef CXt_FORMAT
387 else if (CxTYPE(cx) == CXt_FORMAT)
388 {
389 /* I never used formats, so how should I know how these are implemented? */
390 /* my bold guess is as a simple, plain sub... */
391 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
392 }
393#endif
394 } 552 }
395 553
396 if (top_si->si_type == PERLSI_MAIN) 554 if (expect_true (top_si->si_type == PERLSI_MAIN))
397 break; 555 break;
398 556
399 top_si = top_si->si_prev; 557 top_si = top_si->si_prev;
400 ccstk = top_si->si_cxstack; 558 ccstk = top_si->si_cxstack;
401 cxix = top_si->si_cxix; 559 cxix = top_si->si_cxix;
402 } 560 }
403 561
404 PUTBACK; 562 PUTBACK;
405 } 563 }
406 564
407 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 565 /* allocate some space on the context stack for our purposes */
408 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 566 /* we manually unroll here, as usually 2 slots is enough */
409 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 567 if (SLOT_COUNT >= 1) CXINC;
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 */
410 576
411 c->dowarn = PL_dowarn;
412 c->in_eval = PL_in_eval;
413
414 c->curstackinfo = PL_curstackinfo;
415 c->curstack = PL_curstack;
416 c->mainstack = PL_mainstack; 577 c->mainstack = PL_mainstack;
417 c->stack_sp = PL_stack_sp; 578
418 c->op = PL_op; 579 {
419 c->curpad = PL_curpad; 580 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
420 c->comppad = PL_comppad; 581
421 c->compcv = PL_compcv; 582 slot->defav = GvAV (PL_defgv);
422 c->stack_base = PL_stack_base; 583 slot->defsv = DEFSV;
423 c->stack_max = PL_stack_max; 584 slot->errsv = ERRSV;
424 c->tmps_stack = PL_tmps_stack; 585 slot->irsgv = GvSV (irsgv);
425 c->tmps_floor = PL_tmps_floor; 586
426 c->tmps_ix = PL_tmps_ix; 587 #define VAR(name,type) slot->name = PL_ ## name;
427 c->tmps_max = PL_tmps_max; 588 # include "state.h"
428 c->markstack = PL_markstack; 589 #undef VAR
429 c->markstack_ptr = PL_markstack_ptr; 590 }
430 c->markstack_max = PL_markstack_max;
431 c->scopestack = PL_scopestack;
432 c->scopestack_ix = PL_scopestack_ix;
433 c->scopestack_max = PL_scopestack_max;
434 c->savestack = PL_savestack;
435 c->savestack_ix = PL_savestack_ix;
436 c->savestack_max = PL_savestack_max;
437#if !PERL_VERSION_ATLEAST (5,9,0)
438 c->retstack = PL_retstack;
439 c->retstack_ix = PL_retstack_ix;
440 c->retstack_max = PL_retstack_max;
441#endif
442 c->curpm = PL_curpm;
443 c->curcop = PL_curcop;
444} 591}
445 592
446/* 593/*
447 * allocate various perl stacks. This is an exact copy 594 * allocate various perl stacks. This is an exact copy
448 * of perl.c:init_stacks, except that it uses less memory 595 * of perl.c:init_stacks, except that it uses less memory
449 * on the (sometimes correct) assumption that coroutines do 596 * on the (sometimes correct) assumption that coroutines do
450 * not usually need a lot of stackspace. 597 * not usually need a lot of stackspace.
451 */ 598 */
599#if CORO_PREFER_PERL_FUNCTIONS
600# define coro_init_stacks init_stacks
601#else
452static void 602static void
453coro_init_stacks () 603coro_init_stacks (pTHX)
454{ 604{
455 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 605 PL_curstackinfo = new_stackinfo(32, 8);
456 PL_curstackinfo->si_type = PERLSI_MAIN; 606 PL_curstackinfo->si_type = PERLSI_MAIN;
457 PL_curstack = PL_curstackinfo->si_stack; 607 PL_curstack = PL_curstackinfo->si_stack;
458 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 608 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
459 609
460 PL_stack_base = AvARRAY(PL_curstack); 610 PL_stack_base = AvARRAY(PL_curstack);
461 PL_stack_sp = PL_stack_base; 611 PL_stack_sp = PL_stack_base;
462 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 612 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
463 613
464 New(50,PL_tmps_stack,96,SV*); 614 New(50,PL_tmps_stack,32,SV*);
465 PL_tmps_floor = -1; 615 PL_tmps_floor = -1;
466 PL_tmps_ix = -1; 616 PL_tmps_ix = -1;
467 PL_tmps_max = 96; 617 PL_tmps_max = 32;
468 618
469 New(54,PL_markstack,16,I32); 619 New(54,PL_markstack,16,I32);
470 PL_markstack_ptr = PL_markstack; 620 PL_markstack_ptr = PL_markstack;
471 PL_markstack_max = PL_markstack + 16; 621 PL_markstack_max = PL_markstack + 16;
472 622
473#ifdef SET_MARK_OFFSET 623#ifdef SET_MARK_OFFSET
474 SET_MARK_OFFSET; 624 SET_MARK_OFFSET;
475#endif 625#endif
476 626
477 New(54,PL_scopestack,16,I32); 627 New(54,PL_scopestack,8,I32);
478 PL_scopestack_ix = 0; 628 PL_scopestack_ix = 0;
479 PL_scopestack_max = 16; 629 PL_scopestack_max = 8;
480 630
481 New(54,PL_savestack,96,ANY); 631 New(54,PL_savestack,24,ANY);
482 PL_savestack_ix = 0; 632 PL_savestack_ix = 0;
483 PL_savestack_max = 96; 633 PL_savestack_max = 24;
484 634
485#if !PERL_VERSION_ATLEAST (5,9,0) 635#if !PERL_VERSION_ATLEAST (5,10,0)
486 New(54,PL_retstack,8,OP*); 636 New(54,PL_retstack,4,OP*);
487 PL_retstack_ix = 0; 637 PL_retstack_ix = 0;
488 PL_retstack_max = 8; 638 PL_retstack_max = 4;
489#endif 639#endif
490} 640}
641#endif
491 642
492/* 643/*
493 * destroy the stacks, the callchain etc... 644 * destroy the stacks, the callchain etc...
494 */ 645 */
495static void 646static void
496coro_destroy_stacks() 647coro_destruct_stacks (pTHX)
497{ 648{
498 if (!IN_DESTRUCT)
499 {
500 /* is this ugly, I ask? */
501 LEAVE_SCOPE (0);
502
503 /* sure it is, but more important: is it correct?? :/ */
504 FREETMPS;
505
506 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
507 }
508
509 while (PL_curstackinfo->si_next) 649 while (PL_curstackinfo->si_next)
510 PL_curstackinfo = PL_curstackinfo->si_next; 650 PL_curstackinfo = PL_curstackinfo->si_next;
511 651
512 while (PL_curstackinfo) 652 while (PL_curstackinfo)
513 { 653 {
514 PERL_SI *p = PL_curstackinfo->si_prev; 654 PERL_SI *p = PL_curstackinfo->si_prev;
515 655
516 { /*D*//*remove*/
517 dSP;
518 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519 PUTBACK; /* possibly superfluous */
520 }
521
522 if (!IN_DESTRUCT) 656 if (!IN_DESTRUCT)
523 {
524 dounwind (-1);/*D*//*remove*/
525 SvREFCNT_dec (PL_curstackinfo->si_stack); 657 SvREFCNT_dec (PL_curstackinfo->si_stack);
526 }
527 658
528 Safefree (PL_curstackinfo->si_cxstack); 659 Safefree (PL_curstackinfo->si_cxstack);
529 Safefree (PL_curstackinfo); 660 Safefree (PL_curstackinfo);
530 PL_curstackinfo = p; 661 PL_curstackinfo = p;
531 } 662 }
532 663
533 Safefree (PL_tmps_stack); 664 Safefree (PL_tmps_stack);
534 Safefree (PL_markstack); 665 Safefree (PL_markstack);
535 Safefree (PL_scopestack); 666 Safefree (PL_scopestack);
536 Safefree (PL_savestack); 667 Safefree (PL_savestack);
537#if !PERL_VERSION_ATLEAST (5,9,0) 668#if !PERL_VERSION_ATLEAST (5,10,0)
538 Safefree (PL_retstack); 669 Safefree (PL_retstack);
539#endif 670#endif
540} 671}
541 672
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
713/** coroutine stack handling ************************************************/
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
542static void 805static void
543setup_coro (struct coro *coro) 806coro_setup (pTHX_ struct coro *coro)
544{ 807{
545 /* 808 /*
546 * emulate part of the perl startup here. 809 * emulate part of the perl startup here.
547 */ 810 */
548
549 coro_init_stacks (); 811 coro_init_stacks (aTHX);
812
813 PL_runops = RUNOPS_DEFAULT;
814 PL_curcop = &PL_compiling;
815 PL_in_eval = EVAL_NULL;
816 PL_comppad = 0;
817 PL_curpm = 0;
818 PL_curpad = 0;
819 PL_localizing = 0;
820 PL_dirty = 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);
550 836
551 { 837 {
552 dSP; 838 dSP;
553 LOGOP myop; 839 LOGOP myop;
554 840
555 /*PL_curcop = 0;*/
556 PL_in_eval = 0;
557 SvREFCNT_dec (GvAV (PL_defgv));
558 GvAV (PL_defgv) = coro->args; coro->args = 0;
559
560 SPAGAIN;
561
562 Zero (&myop, 1, LOGOP); 841 Zero (&myop, 1, LOGOP);
563 myop.op_next = Nullop; 842 myop.op_next = Nullop;
564 myop.op_flags = OPf_WANT_VOID; 843 myop.op_flags = OPf_WANT_VOID;
565 844
845 PUSHMARK (SP);
846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
847 PUTBACK;
566 PL_op = (OP *)&myop; 848 PL_op = (OP *)&myop;
567
568 PUSHMARK (SP);
569 PUSHMARK (SP);
570 XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE));
571 PUTBACK;
572 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
573 SPAGAIN; 850 SPAGAIN;
574
575 ENTER; /* necessary e.g. for dounwind */
576 } 851 }
852
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;
577} 859}
578 860
579static 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
580free_coro_mortal () 898free_coro_mortal (pTHX)
581{ 899{
582 if (coro_mortal) 900 if (expect_true (coro_mortal))
583 { 901 {
584 SvREFCNT_dec (coro_mortal); 902 SvREFCNT_dec (coro_mortal);
585 coro_mortal = 0; 903 coro_mortal = 0;
586 } 904 }
587} 905}
588 906
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
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 */
589static void NOINLINE 1034static void NOINLINE
590prepare_cctx (coro_stack *cctx) 1035cctx_prepare (pTHX_ coro_cctx *cctx)
591{ 1036{
592 dSP; 1037 dSP;
593 LOGOP myop; 1038 LOGOP myop;
594 1039
1040 PL_top_env = &PL_start_env;
1041
1042 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace;
1044
595 Zero (&myop, 1, LOGOP); 1045 Zero (&myop, 1, LOGOP);
596 myop.op_next = PL_op; 1046 myop.op_next = PL_op;
597 myop.op_flags = OPf_WANT_VOID; 1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
598
599 sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx));
600 1048
601 PUSHMARK (SP); 1049 PUSHMARK (SP);
1050 EXTEND (SP, 2);
1051 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
602 XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); 1052 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
603 PUTBACK; 1053 PUTBACK;
1054 PL_op = (OP *)&myop;
604 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
605 SPAGAIN; 1056 SPAGAIN;
606} 1057}
607 1058
1059/*
1060 * this is a _very_ stripped down perl interpreter ;)
1061 */
608static void 1062static void
609coro_run (void *arg) 1063cctx_run (void *arg)
610{ 1064{
611 /* coro_run is the alternative epilogue of transfer() */ 1065#ifdef USE_ITHREADS
1066# if CORO_PTHREAD
1067 PERL_SET_CONTEXT (coro_thx);
1068# endif
1069#endif
1070 {
1071 dTHX;
1072
1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */
612 UNLOCK; 1074 UNLOCK;
613 1075
614 /* 1076 /* we now skip the entersub that lead to transfer() */
615 * this is a _very_ stripped down perl interpreter ;) 1077 PL_op = PL_op->op_next;
616 */ 1078
617 PL_top_env = &PL_start_env;
618 /* inject call to cctx_init */ 1079 /* inject a fake subroutine call to cctx_init */
619 prepare_cctx ((coro_stack *)arg); 1080 cctx_prepare (aTHX_ (coro_cctx *)arg);
620 1081
621 /* 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 */
1083 PL_restartop = PL_op;
622 perl_run (PL_curinterp); 1084 perl_run (PL_curinterp);
623 1085
624 fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); 1086 /*
625 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 }
626} 1096}
627 1097
628static coro_stack * 1098static coro_cctx *
629stack_new () 1099cctx_new ()
630{ 1100{
631 coro_stack *stack; 1101 coro_cctx *cctx;
632 1102
1103 ++cctx_count;
633 New (0, stack, 1, coro_stack); 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;
634 1132
635#if HAVE_MMAP 1133#if HAVE_MMAP
636
637 stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1134 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638 /* mmap suppsedly does allocate-on-write for us */ 1135 /* mmap supposedly does allocate-on-write for us */
639 stack->sptr = mmap (0, stack->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);
640 1137
641 if (stack->sptr == (void *)-1) 1138 if (cctx->sptr != (void *)-1)
642 {
643 perror ("FATAL: unable to mmap stack for coroutine");
644 _exit (EXIT_FAILURE);
645 } 1139 {
646
647# if STACKGUARD 1140# if CORO_STACKGUARD
648 mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1141 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
649# endif 1142# endif
650 1143 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
651#else 1144 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
652 1145 cctx->flags |= CC_MAPPED;
653 stack->ssize = STACKSIZE * (long)sizeof (long);
654 New (0, stack->sptr, STACKSIZE, long);
655
656 if (!stack->sptr)
657 { 1146 }
1147 else
1148#endif
1149 {
1150 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1151 New (0, cctx->sptr, cctx_stacksize, long);
1152
1153 if (!cctx->sptr)
1154 {
658 perror (stderr, "FATAL: unable to malloc stack for coroutine"); 1155 perror ("FATAL: unable to allocate stack for coroutine");
659 _exit (EXIT_FAILURE); 1156 _exit (EXIT_FAILURE);
660 } 1157 }
661 1158
662#endif 1159 stack_start = cctx->sptr;
1160 stack_size = cctx->ssize;
1161 }
663 1162
664 coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); 1163 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
1164 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
665 1165
666 return stack; 1166 return cctx;
667} 1167}
668 1168
669static void 1169static void
670stack_free (coro_stack *stack) 1170cctx_destroy (coro_cctx *cctx)
671{ 1171{
672 if (!stack) 1172 if (!cctx)
673 return; 1173 return;
674 1174
1175 --cctx_count;
1176 coro_destroy (&cctx->cctx);
1177
1178 /* coro_transfer creates new, empty cctx's */
1179 if (cctx->sptr)
1180 {
1181#if CORO_USE_VALGRIND
1182 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1183#endif
1184
675#if HAVE_MMAP 1185#if HAVE_MMAP
676 munmap (stack->sptr, stack->ssize); 1186 if (cctx->flags & CC_MAPPED)
677#else 1187 munmap (cctx->sptr, cctx->ssize);
1188 else
1189#endif
678 Safefree (stack->sptr); 1190 Safefree (cctx->sptr);
679#endif 1191 }
680 1192
681 Safefree (stack); 1193 Safefree (cctx);
682} 1194}
683 1195
684static coro_stack *stack_first; 1196/* wether this cctx should be destructed */
685static int cctx_count, cctx_idle; 1197#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
686 1198
687static coro_stack * 1199static coro_cctx *
688stack_get () 1200cctx_get (pTHX)
689{ 1201{
690 coro_stack *stack; 1202 while (expect_true (cctx_first))
691
692 if (stack_first)
693 { 1203 {
1204 coro_cctx *cctx = cctx_first;
1205 cctx_first = cctx->next;
694 --cctx_idle; 1206 --cctx_idle;
695 stack = stack_first; 1207
696 stack_first = stack->next; 1208 if (expect_true (!CCTX_EXPIRED (cctx)))
697 } 1209 return cctx;
698 else 1210
699 { 1211 cctx_destroy (cctx);
700 ++cctx_count;
701 stack = stack_new ();
702 PL_op = PL_op->op_next;
703 } 1212 }
704 1213
705 return stack; 1214 return cctx_new_run ();
706} 1215}
707 1216
708static void 1217static void
709stack_put (coro_stack *stack) 1218cctx_put (coro_cctx *cctx)
710{ 1219{
1220 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1221
1222 /* free another cctx if overlimit */
1223 if (expect_false (cctx_idle >= cctx_max_idle))
1224 {
1225 coro_cctx *first = cctx_first;
1226 cctx_first = first->next;
1227 --cctx_idle;
1228
1229 cctx_destroy (first);
1230 }
1231
711 ++cctx_idle; 1232 ++cctx_idle;
712 stack->next = stack_first; 1233 cctx->next = cctx_first;
713 stack_first = stack; 1234 cctx_first = cctx;
714} 1235}
715 1236
716/* never call directly, always through the coro_state_transfer global variable */ 1237/** coroutine switching *****************************************************/
1238
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 */
717static void NOINLINE 1261static void NOINLINE
718transfer (struct coro *prev, struct coro *next, int flags) 1262transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
719{ 1263{
720 dSTACKLEVEL; 1264 dSTACKLEVEL;
721 1265
722 /* sometimes transfer is only called to set idle_sp */ 1266 /* sometimes transfer is only called to set idle_sp */
723 if (flags == TRANSFER_SET_STACKLEVEL) 1267 if (expect_false (!next))
1268 {
724 ((coro_stack *)prev)->idle_sp = STACKLEVEL; 1269 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
725 else if (prev != next) 1270 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
726 { 1271 }
1272 else if (expect_true (prev != next))
1273 {
1274 static volatile int has_throw;
727 coro_stack *prev__stack; 1275 coro_cctx *prev__cctx;
1276
1277 if (expect_false (prev->flags & CF_NEW))
1278 {
1279 /* create a new empty/source context */
1280 prev->cctx = cctx_new_empty ();
1281 prev->flags &= ~CF_NEW;
1282 prev->flags |= CF_RUNNING;
1283 }
1284
1285 prev->flags &= ~CF_RUNNING;
1286 next->flags |= CF_RUNNING;
728 1287
729 LOCK; 1288 LOCK;
730 1289
731 if (next->mainstack) 1290 /* first get rid of the old state */
1291 save_perl (aTHX_ prev);
1292
1293 if (expect_false (next->flags & CF_NEW))
732 { 1294 {
733 /* coroutine already started */ 1295 /* need to start coroutine */
734 SAVE (prev, flags); 1296 next->flags &= ~CF_NEW;
735 LOAD (next); 1297 /* setup coroutine call */
1298 coro_setup (aTHX_ next);
736 } 1299 }
737 else 1300 else
1301 load_perl (aTHX_ next);
1302
1303 prev__cctx = prev->cctx;
1304
1305 /* possibly "free" the cctx */
1306 if (expect_true (
1307 prev__cctx->idle_sp == STACKLEVEL
1308 && !(prev__cctx->flags & CC_TRACE)
1309 && !force_cctx
1310 ))
738 { 1311 {
739 /* need to start coroutine */ 1312 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
740 /* first get rid of the old state */ 1313 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
741 SAVE (prev, -1); 1314
742 /* setup coroutine call */ 1315 prev->cctx = 0;
743 setup_coro (next); 1316
744 /* need a stack */ 1317 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
745 next->stack = 0; 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
1323 cctx_put (prev__cctx);
746 } 1324 }
747 1325
748 if (!prev->stack) 1326 ++next->usecount;
749 /* create a new empty context */
750 Newz (0, prev->stack, 1, coro_stack);
751 1327
752 prev__stack = prev->stack; 1328 if (expect_true (!next->cctx))
1329 next->cctx = cctx_get (aTHX);
753 1330
754 /* possibly "free" the stack */ 1331 has_throw = !!next->throw;
755 if (prev__stack->idle_sp == STACKLEVEL) 1332
1333 if (expect_false (prev__cctx != next->cctx))
756 { 1334 {
757 stack_put (prev__stack); 1335 prev__cctx->top_env = PL_top_env;
758 prev->stack = 0; 1336 PL_top_env = next->cctx->top_env;
1337 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
759 } 1338 }
760 1339
761 if (!next->stack) 1340 free_coro_mortal (aTHX);
762 next->stack = stack_get (); 1341 UNLOCK;
763 1342
764 if (prev__stack != next->stack) 1343 if (expect_false (has_throw))
765 { 1344 {
766 prev__stack->top_env = PL_top_env; 1345 struct coro *coro = SvSTATE (coro_current);
767 PL_top_env = next->stack->top_env; 1346
768 coro_transfer (&prev__stack->cctx, &next->stack->cctx); 1347 if (coro->throw)
1348 {
1349 SV *exception = coro->throw;
1350 coro->throw = 0;
1351 sv_setsv (ERRSV, exception);
1352 croak (0);
1353 }
769 } 1354 }
1355 }
1356}
770 1357
771 free_coro_mortal (); 1358struct transfer_args
1359{
1360 struct coro *prev, *next;
1361};
772 1362
1363#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1364#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1365
1366/** high level stuff ********************************************************/
1367
1368static int
1369coro_state_destroy (pTHX_ struct coro *coro)
1370{
1371 if (coro->flags & CF_DESTROYED)
1372 return 0;
1373
1374 coro->flags |= CF_DESTROYED;
1375
1376 if (coro->flags & CF_READY)
1377 {
1378 /* reduce nready, as destroying a ready coro effectively unreadies it */
1379 /* alternative: look through all ready queues and remove the coro */
1380 LOCK;
1381 --coro_nready;
773 UNLOCK; 1382 UNLOCK;
774 } 1383 }
775} 1384 else
776 1385 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
777struct transfer_args
778{
779 struct coro *prev, *next;
780 int flags;
781};
782
783#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)
784
785static void
786coro_state_destroy (struct coro *coro)
787{
788 if (coro->refcnt--)
789 return;
790 1386
791 if (coro->mainstack && coro->mainstack != main_mainstack) 1387 if (coro->mainstack && coro->mainstack != main_mainstack)
792 { 1388 {
793 struct coro temp; 1389 struct coro temp;
794 1390
795 SAVE ((&temp), TRANSFER_SAVE_ALL); 1391 if (coro->flags & CF_RUNNING)
796 LOAD (coro); 1392 croak ("FATAL: tried to destroy currently running coroutine");
797 1393
798 coro_destroy_stacks (); 1394 save_perl (aTHX_ &temp);
1395 load_perl (aTHX_ coro);
799 1396
800 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1397 coro_destruct (aTHX_ coro);
801 1398
1399 load_perl (aTHX_ &temp);
1400
802 coro->mainstack = 0; 1401 coro->slot = 0;
803 } 1402 }
804 1403
805 stack_free (coro->stack); 1404 cctx_destroy (coro->cctx);
806 SvREFCNT_dec (coro->args); 1405 SvREFCNT_dec (coro->args);
807 Safefree (coro); 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
1411 return 1;
808} 1412}
809 1413
810static int 1414static int
811coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1415coro_state_free (pTHX_ SV *sv, MAGIC *mg)
812{ 1416{
813 struct coro *coro = (struct coro *)mg->mg_ptr; 1417 struct coro *coro = (struct coro *)mg->mg_ptr;
814 mg->mg_ptr = 0; 1418 mg->mg_ptr = 0;
815 1419
1420 coro->hv = 0;
1421
1422 if (--coro->refcnt < 0)
1423 {
816 coro_state_destroy (coro); 1424 coro_state_destroy (aTHX_ coro);
1425 Safefree (coro);
1426 }
817 1427
818 return 0; 1428 return 0;
819} 1429}
820 1430
821static int 1431static int
… …
828 return 0; 1438 return 0;
829} 1439}
830 1440
831static MGVTBL coro_state_vtbl = { 1441static MGVTBL coro_state_vtbl = {
832 0, 0, 0, 0, 1442 0, 0, 0, 0,
833 coro_state_clear, 1443 coro_state_free,
834 0, 1444 0,
835#ifdef MGf_DUP 1445#ifdef MGf_DUP
836 coro_state_dup, 1446 coro_state_dup,
837#else 1447#else
838# define MGf_DUP 0 1448# define MGf_DUP 0
839#endif 1449#endif
840}; 1450};
841 1451
842static struct coro *
843SvSTATE (SV *coro)
844{
845 HV *stash;
846 MAGIC *mg;
847
848 if (SvROK (coro))
849 coro = SvRV (coro);
850
851 stash = SvSTASH (coro);
852 if (stash != coro_stash && stash != coro_state_stash)
853 {
854 /* very slow, but rare, check */
855 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
856 croak ("Coro::State object required");
857 }
858
859 mg = SvMAGIC (coro);
860 assert (mg->mg_type == PERL_MAGIC_ext);
861 return (struct coro *)mg->mg_ptr;
862}
863
864static void 1452static void
865prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1453prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
866{ 1454{
867 ta->prev = SvSTATE (prev); 1455 ta->prev = SvSTATE (prev_sv);
868 ta->next = SvSTATE (next); 1456 ta->next = SvSTATE (next_sv);
869 ta->flags = flags; 1457 TRANSFER_CHECK (*ta);
870} 1458}
871 1459
872static void 1460static void
873api_transfer (SV *prev, SV *next, int flags) 1461api_transfer (SV *prev_sv, SV *next_sv)
874{ 1462{
875 dTHX; 1463 dTHX;
876 struct transfer_args ta; 1464 struct transfer_args ta;
877 1465
878 prepare_transfer (&ta, prev, next, flags); 1466 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
879 TRANSFER (ta); 1467 TRANSFER (ta, 1);
880} 1468}
881 1469
882/** Coro ********************************************************************/ 1470/** Coro ********************************************************************/
883 1471
884#define PRIO_MAX 3
885#define PRIO_HIGH 1
886#define PRIO_NORMAL 0
887#define PRIO_LOW -1
888#define PRIO_IDLE -3
889#define PRIO_MIN -4
890
891/* for Coro.pm */
892static GV *coro_current, *coro_idle;
893static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
894static int coro_nready;
895
896static void 1472static void
897coro_enq (SV *sv) 1473coro_enq (pTHX_ SV *coro_sv)
1474{
1475 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1476}
1477
1478static SV *
1479coro_deq (pTHX)
898{ 1480{
899 int prio; 1481 int prio;
900 1482
901 if (SvTYPE (sv) != SVt_PVHV)
902 croak ("Coro::ready tried to enqueue something that is not a coroutine");
903
904 prio = SvSTATE (sv)->prio;
905
906 av_push (coro_ready [prio - PRIO_MIN], sv);
907 coro_nready++;
908}
909
910static SV *
911coro_deq (int min_prio)
912{
913 int prio = PRIO_MAX - PRIO_MIN;
914
915 min_prio -= PRIO_MIN;
916 if (min_prio < 0)
917 min_prio = 0;
918
919 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1483 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
920 if (AvFILLp (coro_ready [prio]) >= 0) 1484 if (AvFILLp (coro_ready [prio]) >= 0)
921 {
922 coro_nready--;
923 return av_shift (coro_ready [prio]); 1485 return av_shift (coro_ready [prio]);
924 }
925 1486
926 return 0; 1487 return 0;
927} 1488}
928 1489
1490static int
1491api_ready (SV *coro_sv)
1492{
1493 dTHX;
1494 struct coro *coro;
1495 SV *sv_hook;
1496 void (*xs_hook)(void);
1497
1498 if (SvROK (coro_sv))
1499 coro_sv = SvRV (coro_sv);
1500
1501 coro = SvSTATE (coro_sv);
1502
1503 if (coro->flags & CF_READY)
1504 return 0;
1505
1506 coro->flags |= CF_READY;
1507
1508 LOCK;
1509
1510 sv_hook = coro_nready ? 0 : coro_readyhook;
1511 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1512
1513 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1514 ++coro_nready;
1515
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 ();
1536
1537 return 1;
1538}
1539
1540static int
1541api_is_ready (SV *coro_sv)
1542{
1543 dTHX;
1544 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1545}
1546
929static void 1547static void
930api_ready (SV *coro) 1548prepare_schedule (pTHX_ struct transfer_args *ta)
931{ 1549{
932 dTHX; 1550 SV *prev_sv, *next_sv;
933 1551
934 if (SvROK (coro)) 1552 for (;;)
935 coro = SvRV (coro); 1553 {
1554 LOCK;
1555 next_sv = coro_deq (aTHX);
1556
1557 /* nothing to schedule: call the idle handler */
1558 if (expect_false (!next_sv))
1559 {
1560 dSP;
1561 UNLOCK;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 UNLOCK;
1582 SvREFCNT_dec (next_sv);
1583 /* coro_nready is already taken care of by destroy */
1584 continue;
1585 }
1586
1587 --coro_nready;
1588 UNLOCK;
1589 break;
1590 }
1591
1592 /* free this only after the transfer */
1593 prev_sv = SvRV (coro_current);
1594 ta->prev = SvSTATE (prev_sv);
1595 TRANSFER_CHECK (*ta);
1596 assert (ta->next->flags & CF_READY);
1597 ta->next->flags &= ~CF_READY;
1598 SvRV_set (coro_current, next_sv);
936 1599
937 LOCK; 1600 LOCK;
938 coro_enq (SvREFCNT_inc (coro)); 1601 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv;
939 UNLOCK; 1603 UNLOCK;
940} 1604}
941 1605
942static void 1606static void
943prepare_schedule (struct transfer_args *ta)
944{
945 SV *current, *prev, *next;
946
947 current = GvSV (coro_current);
948
949 for (;;)
950 {
951 LOCK;
952 next = coro_deq (PRIO_MIN);
953 UNLOCK;
954
955 if (next)
956 break;
957
958 {
959 dSP;
960
961 ENTER;
962 SAVETMPS;
963
964 PUSHMARK (SP);
965 PUTBACK;
966 call_sv (GvSV (coro_idle), G_DISCARD);
967
968 FREETMPS;
969 LEAVE;
970 }
971 }
972
973 prev = SvRV (current);
974 SvRV (current) = next;
975
976 /* free this only after the transfer */
977 LOCK;
978 free_coro_mortal ();
979 UNLOCK;
980 coro_mortal = prev;
981
982 ta->prev = SvSTATE (prev);
983 ta->next = SvSTATE (next);
984 ta->flags = TRANSFER_SAVE_ALL;
985}
986
987static void
988prepare_cede (struct transfer_args *ta) 1607prepare_cede (pTHX_ struct transfer_args *ta)
989{ 1608{
990 LOCK; 1609 api_ready (coro_current);
991 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
992 UNLOCK;
993
994 prepare_schedule (ta); 1610 prepare_schedule (aTHX_ ta);
1611}
1612
1613static int
1614prepare_cede_notself (pTHX_ struct transfer_args *ta)
1615{
1616 if (coro_nready)
1617 {
1618 SV *prev = SvRV (coro_current);
1619 prepare_schedule (aTHX_ ta);
1620 api_ready (prev);
1621 return 1;
1622 }
1623 else
1624 return 0;
995} 1625}
996 1626
997static void 1627static void
998api_schedule (void) 1628api_schedule (void)
999{ 1629{
1000 dTHX; 1630 dTHX;
1001 struct transfer_args ta; 1631 struct transfer_args ta;
1002 1632
1003 prepare_schedule (&ta); 1633 prepare_schedule (aTHX_ &ta);
1004 TRANSFER (ta); 1634 TRANSFER (ta, 1);
1005} 1635}
1006 1636
1007static void 1637static int
1008api_cede (void) 1638api_cede (void)
1009{ 1639{
1010 dTHX; 1640 dTHX;
1011 struct transfer_args ta; 1641 struct transfer_args ta;
1012 1642
1013 prepare_cede (&ta); 1643 prepare_cede (aTHX_ &ta);
1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1014 TRANSFER (ta); 1647 TRANSFER (ta, 1);
1648 return 1;
1649 }
1650 else
1651 return 0;
1015} 1652}
1016 1653
1654static int
1655api_cede_notself (void)
1656{
1657 dTHX;
1658 struct transfer_args ta;
1659
1660 if (prepare_cede_notself (aTHX_ &ta))
1661 {
1662 TRANSFER (ta, 1);
1663 return 1;
1664 }
1665 else
1666 return 0;
1667}
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
1017MODULE = Coro::State PACKAGE = Coro::State 1789MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1018 1790
1019PROTOTYPES: DISABLE 1791PROTOTYPES: DISABLE
1020 1792
1021BOOT: 1793BOOT:
1022{ 1794{
1023#ifdef USE_ITHREADS 1795#ifdef USE_ITHREADS
1024 MUTEX_INIT (&coro_mutex); 1796 MUTEX_INIT (&coro_lock);
1797# if CORO_PTHREAD
1798 coro_thx = PERL_GET_CONTEXT;
1799# endif
1025#endif 1800#endif
1026 BOOT_PAGESIZE; 1801 BOOT_PAGESIZE;
1027 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
1028 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1814 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029 1815
1030 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1816 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1031 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1817 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1032 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1818 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1819 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1033 1820
1034 main_mainstack = PL_mainstack; 1821 main_mainstack = PL_mainstack;
1822 main_top_env = PL_top_env;
1035 1823
1824 while (main_top_env->je_prev)
1825 main_top_env = main_top_env->je_prev;
1826
1036 coroapi.ver = CORO_API_VERSION; 1827 coroapi.ver = CORO_API_VERSION;
1828 coroapi.rev = CORO_API_REVISION;
1037 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 }
1038 1839
1039 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1840 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1040} 1841}
1041 1842
1042SV * 1843SV *
1043new (char *klass, ...) 1844new (char *klass, ...)
1044 CODE: 1845 CODE:
1045{ 1846{
1046 struct coro *coro; 1847 struct coro *coro;
1848 MAGIC *mg;
1047 HV *hv; 1849 HV *hv;
1048 int i; 1850 int i;
1049 1851
1050 Newz (0, coro, 1, struct coro); 1852 Newz (0, coro, 1, struct coro);
1051 coro->args = newAV (); 1853 coro->args = newAV ();
1854 coro->flags = CF_NEW;
1052 1855
1856 if (coro_first) coro_first->prev = coro;
1857 coro->next = coro_first;
1858 coro_first = coro;
1859
1053 hv = newHV (); 1860 coro->hv = hv = newHV ();
1054 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;
1055 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1863 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056 1864
1865 av_extend (coro->args, items - 1);
1057 for (i = 1; i < items; i++) 1866 for (i = 1; i < items; i++)
1058 av_push (coro->args, newSVsv (ST (i))); 1867 av_push (coro->args, newSVsv (ST (i)));
1059
1060 /*coro->mainstack = 0; *//*actual work is done inside transfer */
1061 /*coro->stack = 0;*/
1062} 1868}
1063 OUTPUT: 1869 OUTPUT:
1064 RETVAL 1870 RETVAL
1065 1871
1872# these not obviously related functions are all rolled into the same xs
1873# function to increase chances that they all will call transfer with the same
1874# stack offset
1066void 1875void
1067_set_stacklevel (...) 1876_set_stacklevel (...)
1068 ALIAS: 1877 ALIAS:
1069 Coro::State::transfer = 1 1878 Coro::State::transfer = 1
1070 Coro::schedule = 2 1879 Coro::schedule = 2
1071 Coro::cede = 3 1880 Coro::cede = 3
1072 Coro::Cont::yield = 4 1881 Coro::cede_notself = 4
1073 CODE: 1882 CODE:
1074{ 1883{
1075 struct transfer_args ta; 1884 struct transfer_args ta;
1076 1885
1886 PUTBACK;
1077 switch (ix) 1887 switch (ix)
1078 { 1888 {
1079 case 0: 1889 case 0:
1080 ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); 1890 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1081 ta.next = 0; 1891 ta.next = 0;
1082 ta.flags = TRANSFER_SET_STACKLEVEL;
1083 break; 1892 break;
1084 1893
1085 case 1: 1894 case 1:
1086 if (items != 3) 1895 if (items != 2)
1087 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1896 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1088 1897
1089 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1898 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1090 break; 1899 break;
1091 1900
1092 case 2: 1901 case 2:
1093 prepare_schedule (&ta); 1902 prepare_schedule (aTHX_ &ta);
1094 break; 1903 break;
1095 1904
1096 case 3: 1905 case 3:
1097 prepare_cede (&ta); 1906 prepare_cede (aTHX_ &ta);
1098 break; 1907 break;
1099 1908
1100 case 4: 1909 case 4:
1101 { 1910 if (!prepare_cede_notself (aTHX_ &ta))
1102 SV *yieldstack; 1911 XSRETURN_EMPTY;
1103 SV *sv;
1104 AV *defav = GvAV (PL_defgv);
1105 1912
1106 yieldstack = *hv_fetch (
1107 (HV *)SvRV (GvSV (coro_current)),
1108 "yieldstack", sizeof ("yieldstack") - 1,
1109 0
1110 );
1111
1112 /* set up @_ -- ugly */
1113 av_clear (defav);
1114 av_fill (defav, items - 1);
1115 while (items--)
1116 av_store (defav, items, SvREFCNT_inc (ST(items)));
1117
1118 sv = av_pop ((AV *)SvRV (yieldstack));
1119 ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1120 ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1121 ta.flags = 0;
1122 SvREFCNT_dec (sv);
1123 }
1124 break; 1913 break;
1125
1126 } 1914 }
1915 SPAGAIN;
1127 1916
1917 BARRIER;
1918 PUTBACK;
1128 TRANSFER (ta); 1919 TRANSFER (ta, 0);
1920 SPAGAIN; /* might be the sp of a different coroutine now */
1921 /* be extra careful not to ever do anything after TRANSFER */
1129} 1922}
1923
1924bool
1925_destroy (SV *coro_sv)
1926 CODE:
1927 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1928 OUTPUT:
1929 RETVAL
1130 1930
1131void 1931void
1132_clone_state_from (SV *dst, SV *src)
1133 CODE:
1134{
1135 struct coro *coro_src = SvSTATE (src);
1136
1137 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1138
1139 ++coro_src->refcnt;
1140 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1141}
1142
1143void
1144_exit (code) 1932_exit (int code)
1145 int code
1146 PROTOTYPE: $ 1933 PROTOTYPE: $
1147 CODE: 1934 CODE:
1148 _exit (code); 1935 _exit (code);
1149 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
1957
1958int
1959cctx_count ()
1960 CODE:
1961 RETVAL = cctx_count;
1962 OUTPUT:
1963 RETVAL
1964
1965int
1966cctx_idle ()
1967 CODE:
1968 RETVAL = cctx_idle;
1969 OUTPUT:
1970 RETVAL
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
1150MODULE = Coro::State PACKAGE = Coro 2096MODULE = Coro::State PACKAGE = Coro
1151 2097
1152BOOT: 2098BOOT:
1153{ 2099{
1154 int i; 2100 int i;
1155 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
1156 coro_stash = gv_stashpv ("Coro", TRUE); 2109 coro_stash = gv_stashpv ("Coro", TRUE);
1157 2110
1158 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1159 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1160 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2113 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1161 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2114 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1162 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2115 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1163 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2116 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1164 2117
1165 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1166 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1167
1168 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1169 coro_ready[i] = newAV (); 2119 coro_ready[i] = newAV ();
1170 2120
1171 { 2121 {
1172 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 */
1173 2124
1174 coroapi.schedule = api_schedule; 2125 coroapi.schedule = api_schedule;
1175 coroapi.cede = api_cede; 2126 coroapi.cede = api_cede;
2127 coroapi.cede_notself = api_cede_notself;
1176 coroapi.ready = api_ready; 2128 coroapi.ready = api_ready;
2129 coroapi.is_ready = api_is_ready;
1177 coroapi.nready = &coro_nready; 2130 coroapi.nready = &coro_nready;
1178 coroapi.current = coro_current; 2131 coroapi.current = coro_current;
1179 2132
1180 GCoroAPI = &coroapi; 2133 GCoroAPI = &coroapi;
1181 sv_setiv (sv, (IV)&coroapi); 2134 sv_setiv (sv, (IV)&coroapi);
1182 SvREADONLY_on (sv); 2135 SvREADONLY_on (sv);
1183 } 2136 }
1184} 2137}
2138
2139void
2140_set_current (SV *current)
2141 PROTOTYPE: $
2142 CODE:
2143 SvREFCNT_dec (SvRV (coro_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;
1185 2154
1186int 2155int
1187prio (Coro::State coro, int newprio = 0) 2156prio (Coro::State coro, int newprio = 0)
1188 ALIAS: 2157 ALIAS:
1189 nice = 1 2158 nice = 1
… …
1192 RETVAL = coro->prio; 2161 RETVAL = coro->prio;
1193 2162
1194 if (items > 1) 2163 if (items > 1)
1195 { 2164 {
1196 if (ix) 2165 if (ix)
1197 newprio += coro->prio; 2166 newprio = coro->prio - newprio;
1198 2167
1199 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2168 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2169 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201 2170
1202 coro->prio = newprio; 2171 coro->prio = newprio;
1203 } 2172 }
1204} 2173}
2174 OUTPUT:
2175 RETVAL
1205 2176
1206void 2177SV *
1207ready (SV *self) 2178ready (SV *self)
1208 PROTOTYPE: $ 2179 PROTOTYPE: $
1209 CODE: 2180 CODE:
1210 api_ready (self); 2181 RETVAL = boolSV (api_ready (self));
2182 OUTPUT:
2183 RETVAL
1211 2184
1212int 2185int
1213nready (...) 2186nready (...)
1214 PROTOTYPE: 2187 PROTOTYPE:
1215 CODE: 2188 CODE:
1216 RETVAL = coro_nready; 2189 RETVAL = coro_nready;
1217 OUTPUT: 2190 OUTPUT:
1218 RETVAL 2191 RETVAL
1219 2192
1220MODULE = Coro::State PACKAGE = Coro::AIO 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 ();
1221 2282
1222SV * 2283SV *
1223_get_state () 2284gensub (SV *sub, ...)
1224 CODE: 2285 PROTOTYPE: &;@
2286 CODE:
1225{ 2287{
1226 struct { 2288 struct coro *coro;
1227 int errorno; 2289 MAGIC *mg;
1228 int laststype; 2290 CV *xcv;
1229 int laststatval; 2291 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1230 Stat_t statcache; 2292 int i;
1231 } data;
1232 2293
1233 data.errorno = errno; 2294 CvGV (ncv) = CvGV (cv);
1234 data.laststype = PL_laststype; 2295 CvFILE (ncv) = CvFILE (cv);
1235 data.laststatval = PL_laststatval;
1236 data.statcache = PL_statcache;
1237 2296
1238 RETVAL = newSVpvn ((char *)&data, sizeof data); 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);
1239} 2315}
1240 OUTPUT: 2316 OUTPUT:
1241 RETVAL 2317 RETVAL
1242 2318
2319#endif
2320
2321
2322MODULE = Coro::State PACKAGE = Coro::AIO
2323
1243void 2324void
1244_set_state (char *data_) 2325_get_state (SV *self)
2326 PPCODE:
2327{
2328 AV *defav = GvAV (PL_defgv);
2329 AV *av = newAV ();
2330 int i;
2331 SV *data_sv = newSV (sizeof (struct io_state));
2332 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2333 SvCUR_set (data_sv, sizeof (struct io_state));
2334 SvPOK_only (data_sv);
2335
2336 data->errorno = errno;
2337 data->laststype = PL_laststype;
2338 data->laststatval = PL_laststatval;
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);
2351}
2352
2353void
2354_set_state (SV *state)
1245 PROTOTYPE: $ 2355 PROTOTYPE: $
2356 PPCODE:
2357{
2358 AV *av = (AV *)SvRV (state);
2359 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2360 int i;
2361
2362 errno = data->errorno;
2363 PL_laststype = data->laststype;
2364 PL_laststatval = data->laststatval;
2365 PL_statcache = data->statcache;
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: @
1246 CODE: 2381 CODE:
1247{ 2382{
1248 struct { 2383 static int incede;
1249 int errorno;
1250 int laststype;
1251 int laststatval;
1252 Stat_t statcache;
1253 } *data = (void *)data_;
1254 2384
1255 errno = data->errorno; 2385 api_cede_notself ();
1256 PL_laststype = data->laststype; 2386
1257 PL_laststatval = data->laststatval; 2387 ++incede;
1258 PL_statcache = data->statcache; 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;
1259} 2401}
2402
2403
2404MODULE = Coro::State PACKAGE = PerlIO::cede
2405
2406BOOT:
2407 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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