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Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.256 by root, Sat Nov 8 13:32:18 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13#define PERL_VERSION_ATLEAST(a,b,c) \
14 (PERL_REVISION > (a) \
15 || (PERL_REVISION == (a) \
16 && (PERL_VERSION > (b) \
17 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19#if !PERL_VERSION_ATLEAST (5,6,0)
20# ifndef PL_ppaddr
21# define PL_ppaddr ppaddr
22# endif
23# ifndef call_sv
24# define call_sv perl_call_sv
25# endif
26# ifndef get_sv
27# define get_sv perl_get_sv
28# endif
29# ifndef get_cv
30# define get_cv perl_get_cv
31# endif
32# ifndef IS_PADGV
33# define IS_PADGV(v) 0
34# endif
35# ifndef IS_PADCONST
36# define IS_PADCONST(v) 0
37# endif
38#endif
39 12
40#include <stdio.h> 13#include <stdio.h>
41#include <errno.h> 14#include <errno.h>
15#include <assert.h>
42 16
43#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
44# undef STACKGUARD 18# undef setjmp
45#endif 19# undef longjmp
46 20# undef _exit
47#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
48# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
49#endif 24#endif
50 25
51#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
52# include <unistd.h> 27# include <unistd.h>
53# include <sys/mman.h> 28# include <sys/mman.h>
… …
69#else 44#else
70# define PAGESIZE 0 45# define PAGESIZE 0
71# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
72#endif 47#endif
73 48
74/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
75 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
76 * and should be unique. */ 51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
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
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif
116
117/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS
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. */
77#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
78#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
79 126
80#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
81 128
82#if __GNUC__ >= 3 129#if __GNUC__ >= 3
83# 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))
84#else 133#else
85# define attribute(x) 134# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr)
86#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
87 141
88#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
89 143
90#include "CoroAPI.h" 144#include "CoroAPI.h"
91 145
92#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93
94#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
95static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
96# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
97# 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
98#else 155#else
156
99# define LOCK (void)0 157# define LOCK (void)0
100# define UNLOCK (void)0 158# define UNLOCK (void)0
101#endif
102 159
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;
103static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
104static 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;
105static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
106static 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;
107 200
108static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
109static 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};
110 212
111/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
112typedef struct coro_cctx { 214typedef struct coro_cctx {
113 struct coro_cctx *next; 215 struct coro_cctx *next;
114 216
115 /* the stack */ 217 /* the stack */
116 void *sptr; 218 void *sptr;
117 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
118 220
119 /* cpu state */ 221 /* cpu state */
120 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 */
121 JMPENV *top_env; 224 JMPENV *top_env;
122 coro_context cctx; 225 coro_context cctx;
123 226
227 U32 gen;
124#if USE_VALGRIND 228#if CORO_USE_VALGRIND
125 int valgrind_id; 229 int valgrind_id;
126#endif 230#endif
231 unsigned char flags;
127} coro_cctx; 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))
128 253
129/* this is a structure representing a perl-level coroutine */ 254/* this is a structure representing a perl-level coroutine */
130struct coro { 255struct coro {
131 /* the c coroutine allocated to this perl coroutine, if any */ 256 /* the c coroutine allocated to this perl coroutine, if any */
132 coro_cctx *cctx; 257 coro_cctx *cctx;
133 258
134 /* data associated with this coroutine (initial args) */ 259 /* process data */
135 AV *args;
136 int refcnt;
137
138 /* optionally saved, might be zero */
139 AV *defav;
140 SV *defsv;
141 SV *errsv;
142
143 /* saved global state not related to stacks */
144 U8 dowarn;
145 I32 in_eval;
146
147 /* the stacks and related info (callchain etc..) */
148 PERL_SI *curstackinfo;
149 AV *curstack;
150 AV *mainstack; 260 AV *mainstack;
151 SV **stack_sp; 261 perl_slots *slot; /* basically the saved sp */
152 OP *op; 262
153 SV **curpad; 263 AV *args; /* data associated with this coroutine (initial args) */
154 AV *comppad; 264 int refcnt; /* coroutines are refcounted, yes */
155 CV *compcv; 265 int flags; /* CF_ flags */
156 SV **stack_base; 266 HV *hv; /* the perl hash associated with this coro, if any */
157 SV **stack_max; 267
158 SV **tmps_stack; 268 /* statistics */
159 I32 tmps_floor; 269 int usecount; /* number of transfers to this coro */
160 I32 tmps_ix;
161 I32 tmps_max;
162 I32 *markstack;
163 I32 *markstack_ptr;
164 I32 *markstack_max;
165 I32 *scopestack;
166 I32 scopestack_ix;
167 I32 scopestack_max;
168 ANY *savestack;
169 I32 savestack_ix;
170 I32 savestack_max;
171 OP **retstack;
172 I32 retstack_ix;
173 I32 retstack_max;
174 PMOP *curpm;
175 COP *curcop;
176 270
177 /* coro process data */ 271 /* coro process data */
178 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;
179}; 280};
180 281
181typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
182typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
183 284
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
184static 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 *
185coro_clone_padlist (CV *cv) 334coro_clone_padlist (pTHX_ CV *cv)
186{ 335{
187 AV *padlist = CvPADLIST (cv); 336 AV *padlist = CvPADLIST (cv);
188 AV *newpadlist, *newpad; 337 AV *newpadlist, *newpad;
189 338
190 newpadlist = newAV (); 339 newpadlist = newAV ();
191 AvREAL_off (newpadlist); 340 AvREAL_off (newpadlist);
192#if PERL_VERSION_ATLEAST (5,9,0) 341#if PERL_VERSION_ATLEAST (5,10,0)
193 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 342 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
194#else 343#else
195 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 344 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
196#endif 345#endif
197 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 346 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
198 --AvFILLp (padlist); 347 --AvFILLp (padlist);
199 348
200 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 349 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
201 av_store (newpadlist, 1, (SV *)newpad); 350 av_store (newpadlist, 1, (SV *)newpad);
202 351
203 return newpadlist; 352 return newpadlist;
204} 353}
205 354
206static void 355static void
207free_padlist (AV *padlist) 356free_padlist (pTHX_ AV *padlist)
208{ 357{
209 /* may be during global destruction */ 358 /* may be during global destruction */
210 if (SvREFCNT (padlist)) 359 if (SvREFCNT (padlist))
211 { 360 {
212 I32 i = AvFILLp (padlist); 361 I32 i = AvFILLp (padlist);
… …
233 AV *padlist; 382 AV *padlist;
234 AV *av = (AV *)mg->mg_obj; 383 AV *av = (AV *)mg->mg_obj;
235 384
236 /* casting is fun. */ 385 /* casting is fun. */
237 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 386 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
238 free_padlist (padlist); 387 free_padlist (aTHX_ padlist);
239 388
240 SvREFCNT_dec (av); 389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
241 390
242 return 0; 391 return 0;
243} 392}
244 393
245#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
246 396
247static 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))
248 437
249/* the next two functions merely cache the padlists */ 438/* the next two functions merely cache the padlists */
250static void 439static void
251get_padlist (CV *cv) 440get_padlist (pTHX_ CV *cv)
252{ 441{
253 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
443 AV *av;
254 444
255 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 445 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
256 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 446 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257 else 447 else
258 { 448 {
259#if 0 449#if CORO_PREFER_PERL_FUNCTIONS
260 /* this is probably cleaner, but also slower? */ 450 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */
261 CV *cp = Perl_cv_clone (cv); 452 CV *cp = Perl_cv_clone (cv);
262 CvPADLIST (cv) = CvPADLIST (cp); 453 CvPADLIST (cv) = CvPADLIST (cp);
263 CvPADLIST (cp) = 0; 454 CvPADLIST (cp) = 0;
264 SvREFCNT_dec (cp); 455 SvREFCNT_dec (cp);
265#else 456#else
266 CvPADLIST (cv) = coro_clone_padlist (cv); 457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267#endif 458#endif
268 } 459 }
269} 460}
270 461
271static void 462static void
272put_padlist (CV *cv) 463put_padlist (pTHX_ CV *cv)
273{ 464{
274 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 465 MAGIC *mg = CORO_MAGIC_cv (cv);
466 AV *av;
275 467
276 if (!mg) 468 if (expect_false (!mg))
277 { 469 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
278 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280 mg->mg_virtual = &vtbl_coro;
281 mg->mg_obj = (SV *)newAV ();
282 }
283 470
284 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); 471 av = (AV *)mg->mg_obj;
285}
286 472
287#define SB do { 473 if (expect_false (AvFILLp (av) >= AvMAX (av)))
288#define SE } while (0) 474 av_extend (av, AvMAX (av) + 1);
289 475
290#define LOAD(state) load_state((state)); 476 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291#define SAVE(state,flags) save_state((state),(flags)); 477}
292 478
293#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE 479/** load & save, init *******************************************************/
294 480
295static void 481static void
296load_state(Coro__State c) 482load_perl (pTHX_ Coro__State c)
297{ 483{
298 PL_dowarn = c->dowarn; 484 perl_slots *slot = c->slot;
299 PL_in_eval = c->in_eval; 485 c->slot = 0;
300 486
301 PL_curstackinfo = c->curstackinfo;
302 PL_curstack = c->curstack;
303 PL_mainstack = c->mainstack; 487 PL_mainstack = c->mainstack;
304 PL_stack_sp = c->stack_sp;
305 PL_op = c->op;
306 PL_curpad = c->curpad;
307 PL_comppad = c->comppad;
308 PL_compcv = c->compcv;
309 PL_stack_base = c->stack_base;
310 PL_stack_max = c->stack_max;
311 PL_tmps_stack = c->tmps_stack;
312 PL_tmps_floor = c->tmps_floor;
313 PL_tmps_ix = c->tmps_ix;
314 PL_tmps_max = c->tmps_max;
315 PL_markstack = c->markstack;
316 PL_markstack_ptr = c->markstack_ptr;
317 PL_markstack_max = c->markstack_max;
318 PL_scopestack = c->scopestack;
319 PL_scopestack_ix = c->scopestack_ix;
320 PL_scopestack_max = c->scopestack_max;
321 PL_savestack = c->savestack;
322 PL_savestack_ix = c->savestack_ix;
323 PL_savestack_max = c->savestack_max;
324#if !PERL_VERSION_ATLEAST (5,9,0)
325 PL_retstack = c->retstack;
326 PL_retstack_ix = c->retstack_ix;
327 PL_retstack_max = c->retstack_max;
328#endif
329 PL_curpm = c->curpm;
330 PL_curcop = c->curcop;
331 488
332 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 489 GvSV (PL_defgv) = slot->defsv;
333 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 490 GvAV (PL_defgv) = slot->defav;
334 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
335 497
336 { 498 {
337 dSP; 499 dSP;
500
338 CV *cv; 501 CV *cv;
339 502
340 /* now do the ugly restore mess */ 503 /* now do the ugly restore mess */
341 while ((cv = (CV *)POPs)) 504 while (expect_true (cv = (CV *)POPs))
342 { 505 {
343 AV *padlist = (AV *)POPs;
344
345 if (padlist)
346 {
347 put_padlist (cv); /* mark this padlist as available */ 506 put_padlist (aTHX_ cv); /* mark this padlist as available */
348 CvPADLIST(cv) = padlist; 507 CvDEPTH (cv) = PTR2IV (POPs);
349 } 508 CvPADLIST (cv) = (AV *)POPs;
350
351 ++CvDEPTH(cv);
352 } 509 }
353 510
354 PUTBACK; 511 PUTBACK;
355 } 512 }
356} 513}
357 514
358static void 515static void
359save_state(Coro__State c, int flags) 516save_perl (pTHX_ Coro__State c)
360{ 517{
361 { 518 {
362 dSP; 519 dSP;
363 I32 cxix = cxstack_ix; 520 I32 cxix = cxstack_ix;
364 PERL_CONTEXT *ccstk = cxstack; 521 PERL_CONTEXT *ccstk = cxstack;
… …
367 /* 524 /*
368 * 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
369 * (and reinitialize) all cv's in the whole callchain :( 526 * (and reinitialize) all cv's in the whole callchain :(
370 */ 527 */
371 528
372 PUSHs (Nullsv); 529 XPUSHs (Nullsv);
373 /* this loop was inspired by pp_caller */ 530 /* this loop was inspired by pp_caller */
374 for (;;) 531 for (;;)
375 { 532 {
376 while (cxix >= 0) 533 while (expect_true (cxix >= 0))
377 { 534 {
378 PERL_CONTEXT *cx = &ccstk[cxix--]; 535 PERL_CONTEXT *cx = &ccstk[cxix--];
379 536
380 if (CxTYPE(cx) == CXt_SUB) 537 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
381 { 538 {
382 CV *cv = cx->blk_sub.cv; 539 CV *cv = cx->blk_sub.cv;
540
383 if (CvDEPTH(cv)) 541 if (expect_true (CvDEPTH (cv)))
384 { 542 {
385 EXTEND (SP, CvDEPTH(cv)*2); 543 EXTEND (SP, 3);
386
387 while (--CvDEPTH(cv))
388 {
389 /* this tells the restore code to increment CvDEPTH */
390 PUSHs (Nullsv);
391 PUSHs ((SV *)cv);
392 }
393
394 PUSHs ((SV *)CvPADLIST(cv)); 544 PUSHs ((SV *)CvPADLIST (cv));
545 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
395 PUSHs ((SV *)cv); 546 PUSHs ((SV *)cv);
396 547
548 CvDEPTH (cv) = 0;
397 get_padlist (cv); 549 get_padlist (aTHX_ cv);
398 } 550 }
399 } 551 }
400#ifdef CXt_FORMAT
401 else if (CxTYPE(cx) == CXt_FORMAT)
402 {
403 /* I never used formats, so how should I know how these are implemented? */
404 /* my bold guess is as a simple, plain sub... */
405 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406 }
407#endif
408 } 552 }
409 553
410 if (top_si->si_type == PERLSI_MAIN) 554 if (expect_true (top_si->si_type == PERLSI_MAIN))
411 break; 555 break;
412 556
413 top_si = top_si->si_prev; 557 top_si = top_si->si_prev;
414 ccstk = top_si->si_cxstack; 558 ccstk = top_si->si_cxstack;
415 cxix = top_si->si_cxix; 559 cxix = top_si->si_cxix;
416 } 560 }
417 561
418 PUTBACK; 562 PUTBACK;
419 } 563 }
420 564
421 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 565 /* allocate some space on the context stack for our purposes */
422 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 566 /* we manually unroll here, as usually 2 slots is enough */
423 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 */
424 576
425 c->dowarn = PL_dowarn;
426 c->in_eval = PL_in_eval;
427
428 c->curstackinfo = PL_curstackinfo;
429 c->curstack = PL_curstack;
430 c->mainstack = PL_mainstack; 577 c->mainstack = PL_mainstack;
431 c->stack_sp = PL_stack_sp; 578
432 c->op = PL_op; 579 {
433 c->curpad = PL_curpad; 580 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
434 c->comppad = PL_comppad; 581
435 c->compcv = PL_compcv; 582 slot->defav = GvAV (PL_defgv);
436 c->stack_base = PL_stack_base; 583 slot->defsv = DEFSV;
437 c->stack_max = PL_stack_max; 584 slot->errsv = ERRSV;
438 c->tmps_stack = PL_tmps_stack; 585 slot->irsgv = GvSV (irsgv);
439 c->tmps_floor = PL_tmps_floor; 586
440 c->tmps_ix = PL_tmps_ix; 587 #define VAR(name,type) slot->name = PL_ ## name;
441 c->tmps_max = PL_tmps_max; 588 # include "state.h"
442 c->markstack = PL_markstack; 589 #undef VAR
443 c->markstack_ptr = PL_markstack_ptr; 590 }
444 c->markstack_max = PL_markstack_max;
445 c->scopestack = PL_scopestack;
446 c->scopestack_ix = PL_scopestack_ix;
447 c->scopestack_max = PL_scopestack_max;
448 c->savestack = PL_savestack;
449 c->savestack_ix = PL_savestack_ix;
450 c->savestack_max = PL_savestack_max;
451#if !PERL_VERSION_ATLEAST (5,9,0)
452 c->retstack = PL_retstack;
453 c->retstack_ix = PL_retstack_ix;
454 c->retstack_max = PL_retstack_max;
455#endif
456 c->curpm = PL_curpm;
457 c->curcop = PL_curcop;
458} 591}
459 592
460/* 593/*
461 * allocate various perl stacks. This is an exact copy 594 * allocate various perl stacks. This is an exact copy
462 * of perl.c:init_stacks, except that it uses less memory 595 * of perl.c:init_stacks, except that it uses less memory
463 * on the (sometimes correct) assumption that coroutines do 596 * on the (sometimes correct) assumption that coroutines do
464 * not usually need a lot of stackspace. 597 * not usually need a lot of stackspace.
465 */ 598 */
599#if CORO_PREFER_PERL_FUNCTIONS
600# define coro_init_stacks init_stacks
601#else
466static void 602static void
467coro_init_stacks () 603coro_init_stacks (pTHX)
468{ 604{
469 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 605 PL_curstackinfo = new_stackinfo(32, 8);
470 PL_curstackinfo->si_type = PERLSI_MAIN; 606 PL_curstackinfo->si_type = PERLSI_MAIN;
471 PL_curstack = PL_curstackinfo->si_stack; 607 PL_curstack = PL_curstackinfo->si_stack;
472 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 608 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473 609
474 PL_stack_base = AvARRAY(PL_curstack); 610 PL_stack_base = AvARRAY(PL_curstack);
475 PL_stack_sp = PL_stack_base; 611 PL_stack_sp = PL_stack_base;
476 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 612 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477 613
478 New(50,PL_tmps_stack,96,SV*); 614 New(50,PL_tmps_stack,32,SV*);
479 PL_tmps_floor = -1; 615 PL_tmps_floor = -1;
480 PL_tmps_ix = -1; 616 PL_tmps_ix = -1;
481 PL_tmps_max = 96; 617 PL_tmps_max = 32;
482 618
483 New(54,PL_markstack,16,I32); 619 New(54,PL_markstack,16,I32);
484 PL_markstack_ptr = PL_markstack; 620 PL_markstack_ptr = PL_markstack;
485 PL_markstack_max = PL_markstack + 16; 621 PL_markstack_max = PL_markstack + 16;
486 622
487#ifdef SET_MARK_OFFSET 623#ifdef SET_MARK_OFFSET
488 SET_MARK_OFFSET; 624 SET_MARK_OFFSET;
489#endif 625#endif
490 626
491 New(54,PL_scopestack,16,I32); 627 New(54,PL_scopestack,8,I32);
492 PL_scopestack_ix = 0; 628 PL_scopestack_ix = 0;
493 PL_scopestack_max = 16; 629 PL_scopestack_max = 8;
494 630
495 New(54,PL_savestack,96,ANY); 631 New(54,PL_savestack,24,ANY);
496 PL_savestack_ix = 0; 632 PL_savestack_ix = 0;
497 PL_savestack_max = 96; 633 PL_savestack_max = 24;
498 634
499#if !PERL_VERSION_ATLEAST (5,9,0) 635#if !PERL_VERSION_ATLEAST (5,10,0)
500 New(54,PL_retstack,8,OP*); 636 New(54,PL_retstack,4,OP*);
501 PL_retstack_ix = 0; 637 PL_retstack_ix = 0;
502 PL_retstack_max = 8; 638 PL_retstack_max = 4;
503#endif 639#endif
504} 640}
641#endif
505 642
506/* 643/*
507 * destroy the stacks, the callchain etc... 644 * destroy the stacks, the callchain etc...
508 */ 645 */
509static void 646static void
510coro_destroy_stacks () 647coro_destruct_stacks (pTHX)
511{ 648{
512 if (!IN_DESTRUCT)
513 {
514 /* is this ugly, I ask? */
515 LEAVE_SCOPE (0);
516
517 /* sure it is, but more important: is it correct?? :/ */
518 FREETMPS;
519
520 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
521 }
522
523 while (PL_curstackinfo->si_next) 649 while (PL_curstackinfo->si_next)
524 PL_curstackinfo = PL_curstackinfo->si_next; 650 PL_curstackinfo = PL_curstackinfo->si_next;
525 651
526 while (PL_curstackinfo) 652 while (PL_curstackinfo)
527 { 653 {
528 PERL_SI *p = PL_curstackinfo->si_prev; 654 PERL_SI *p = PL_curstackinfo->si_prev;
529 655
530 { /*D*//*remove*/
531 dSP;
532 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
533 PUTBACK; /* possibly superfluous */
534 }
535
536 if (!IN_DESTRUCT) 656 if (!IN_DESTRUCT)
537 {
538 dounwind (-1);/*D*//*remove*/
539 SvREFCNT_dec (PL_curstackinfo->si_stack); 657 SvREFCNT_dec (PL_curstackinfo->si_stack);
540 }
541 658
542 Safefree (PL_curstackinfo->si_cxstack); 659 Safefree (PL_curstackinfo->si_cxstack);
543 Safefree (PL_curstackinfo); 660 Safefree (PL_curstackinfo);
544 PL_curstackinfo = p; 661 PL_curstackinfo = p;
545 } 662 }
546 663
547 Safefree (PL_tmps_stack); 664 Safefree (PL_tmps_stack);
548 Safefree (PL_markstack); 665 Safefree (PL_markstack);
549 Safefree (PL_scopestack); 666 Safefree (PL_scopestack);
550 Safefree (PL_savestack); 667 Safefree (PL_savestack);
551#if !PERL_VERSION_ATLEAST (5,9,0) 668#if !PERL_VERSION_ATLEAST (5,10,0)
552 Safefree (PL_retstack); 669 Safefree (PL_retstack);
553#endif 670#endif
554} 671}
555 672
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
556static void 805static void
557setup_coro (struct coro *coro) 806coro_setup (pTHX_ struct coro *coro)
558{ 807{
559 /* 808 /*
560 * emulate part of the perl startup here. 809 * emulate part of the perl startup here.
561 */ 810 */
562
563 coro_init_stacks (); 811 coro_init_stacks (aTHX);
564 812
813 PL_runops = RUNOPS_DEFAULT;
814 PL_curcop = &PL_compiling;
815 PL_in_eval = EVAL_NULL;
565 PL_curcop = 0; 816 PL_comppad = 0;
566 PL_in_eval = 0;
567 PL_curpm = 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);
568 836
569 { 837 {
570 dSP; 838 dSP;
571 LOGOP myop; 839 LOGOP myop;
572 840
573 /* I have no idea why this is needed, but it is */
574 PUSHMARK (SP);
575
576 SvREFCNT_dec (GvAV (PL_defgv));
577 GvAV (PL_defgv) = coro->args; coro->args = 0;
578
579 Zero (&myop, 1, LOGOP); 841 Zero (&myop, 1, LOGOP);
580 myop.op_next = Nullop; 842 myop.op_next = Nullop;
581 myop.op_flags = OPf_WANT_VOID; 843 myop.op_flags = OPf_WANT_VOID;
582 844
845 PUSHMARK (SP);
846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
847 PUTBACK;
583 PL_op = (OP *)&myop; 848 PL_op = (OP *)&myop;
584
585 PUSHMARK (SP);
586 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587 PUTBACK;
588 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589 SPAGAIN; 850 SPAGAIN;
590
591 ENTER; /* necessary e.g. for dounwind */
592 } 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;
593} 859}
594 860
595static 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
596free_coro_mortal () 898free_coro_mortal (pTHX)
597{ 899{
598 if (coro_mortal) 900 if (expect_true (coro_mortal))
599 { 901 {
600 SvREFCNT_dec (coro_mortal); 902 SvREFCNT_dec (coro_mortal);
601 coro_mortal = 0; 903 coro_mortal = 0;
602 } 904 }
603} 905}
604 906
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 */
605static void NOINLINE 1034static void NOINLINE
606prepare_cctx (coro_cctx *cctx) 1035cctx_prepare (pTHX_ coro_cctx *cctx)
607{ 1036{
608 dSP; 1037 dSP;
609 LOGOP myop; 1038 LOGOP myop;
610 1039
1040 PL_top_env = &PL_start_env;
1041
1042 if (cctx->flags & CC_TRACE)
1043 PL_runops = runops_trace;
1044
611 Zero (&myop, 1, LOGOP); 1045 Zero (&myop, 1, LOGOP);
612 myop.op_next = PL_op; 1046 myop.op_next = PL_op;
613 myop.op_flags = OPf_WANT_VOID; 1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
614
615 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
616 1048
617 PUSHMARK (SP); 1049 PUSHMARK (SP);
1050 EXTEND (SP, 2);
1051 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
618 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1052 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
619 PUTBACK; 1053 PUTBACK;
1054 PL_op = (OP *)&myop;
620 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
621 SPAGAIN; 1056 SPAGAIN;
622} 1057}
623 1058
1059/*
1060 * this is a _very_ stripped down perl interpreter ;)
1061 */
624static void 1062static void
625coro_run (void *arg) 1063cctx_run (void *arg)
626{ 1064{
627 /* 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. */
628 UNLOCK; 1074 UNLOCK;
629 1075
630 /* 1076 /* we now skip the entersub that lead to transfer() */
631 * this is a _very_ stripped down perl interpreter ;) 1077 PL_op = PL_op->op_next;
632 */
633 PL_top_env = &PL_start_env;
634 1078
635 /* inject call to cctx_init */ 1079 /* inject a fake subroutine call to cctx_init */
636 prepare_cctx ((coro_cctx *)arg); 1080 cctx_prepare (aTHX_ (coro_cctx *)arg);
637 1081
638 /* 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;
639 perl_run (PL_curinterp); 1084 perl_run (PL_curinterp);
640 1085
641 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1086 /*
642 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 }
643} 1096}
644 1097
645static coro_cctx * 1098static coro_cctx *
646cctx_new () 1099cctx_new ()
647{ 1100{
648 coro_cctx *cctx; 1101 coro_cctx *cctx;
1102 void *stack_start;
1103 size_t stack_size;
649 1104
650 ++cctx_count; 1105 ++cctx_count;
651
652 New (0, cctx, 1, coro_cctx); 1106 Newz (0, cctx, 1, coro_cctx);
1107
1108 cctx->gen = cctx_gen;
653 1109
654#if HAVE_MMAP 1110#if HAVE_MMAP
655
656 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1111 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657 /* mmap suppsedly does allocate-on-write for us */ 1112 /* mmap supposedly does allocate-on-write for us */
658 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1113 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
659 1114
660 if (cctx->sptr == (void *)-1) 1115 if (cctx->sptr != (void *)-1)
661 {
662 perror ("FATAL: unable to mmap stack for coroutine");
663 _exit (EXIT_FAILURE);
664 } 1116 {
665
666# if STACKGUARD 1117# if CORO_STACKGUARD
667 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1118 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
668# endif 1119# endif
1120 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1121 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1122 cctx->flags |= CC_MAPPED;
1123 }
1124 else
1125#endif
1126 {
1127 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1128 New (0, cctx->sptr, cctx_stacksize, long);
669 1129
670#else
671
672 cctx->ssize = STACKSIZE * (long)sizeof (long);
673 New (0, cctx->sptr, STACKSIZE, long);
674
675 if (!cctx->sptr) 1130 if (!cctx->sptr)
676 { 1131 {
677 perror ("FATAL: unable to malloc stack for coroutine"); 1132 perror ("FATAL: unable to allocate stack for coroutine");
678 _exit (EXIT_FAILURE); 1133 _exit (EXIT_FAILURE);
679 } 1134 }
680 1135
681#endif 1136 stack_start = cctx->sptr;
1137 stack_size = cctx->ssize;
1138 }
682 1139
683#if USE_VALGRIND 1140 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
684 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1141 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
685 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
686 cctx->ssize + (char *)cctx->sptr
687 );
688#endif
689
690 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
691 1142
692 return cctx; 1143 return cctx;
693} 1144}
694 1145
695static void 1146static void
696cctx_free (coro_cctx *cctx) 1147cctx_destroy (coro_cctx *cctx)
697{ 1148{
698 if (!cctx) 1149 if (!cctx)
699 return; 1150 return;
700 1151
701 --cctx_count; 1152 --cctx_count;
1153 coro_destroy (&cctx->cctx);
702 1154
1155 /* coro_transfer creates new, empty cctx's */
1156 if (cctx->sptr)
1157 {
703#if USE_VALGRIND 1158#if CORO_USE_VALGRIND
704 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1159 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
705#endif 1160#endif
706 1161
707#if HAVE_MMAP 1162#if HAVE_MMAP
1163 if (cctx->flags & CC_MAPPED)
708 munmap (cctx->sptr, cctx->ssize); 1164 munmap (cctx->sptr, cctx->ssize);
709#else 1165 else
1166#endif
710 Safefree (cctx->sptr); 1167 Safefree (cctx->sptr);
711#endif 1168 }
712 1169
713 Safefree (cctx); 1170 Safefree (cctx);
714} 1171}
715 1172
1173/* wether this cctx should be destructed */
1174#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1175
716static coro_cctx * 1176static coro_cctx *
717cctx_get () 1177cctx_get (pTHX)
718{ 1178{
719 coro_cctx *cctx; 1179 while (expect_true (cctx_first))
720
721 if (cctx_first)
722 { 1180 {
1181 coro_cctx *cctx = cctx_first;
1182 cctx_first = cctx->next;
723 --cctx_idle; 1183 --cctx_idle;
724 cctx = cctx_first; 1184
725 cctx_first = cctx->next; 1185 if (expect_true (!CCTX_EXPIRED (cctx)))
726 } 1186 return cctx;
727 else 1187
728 { 1188 cctx_destroy (cctx);
729 cctx = cctx_new ();
730 PL_op = PL_op->op_next;
731 } 1189 }
732 1190
733 return cctx; 1191 return cctx_new ();
734} 1192}
735 1193
736static void 1194static void
737cctx_put (coro_cctx *cctx) 1195cctx_put (coro_cctx *cctx)
738{ 1196{
1197 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1198
1199 /* free another cctx if overlimit */
1200 if (expect_false (cctx_idle >= cctx_max_idle))
1201 {
1202 coro_cctx *first = cctx_first;
1203 cctx_first = first->next;
1204 --cctx_idle;
1205
1206 cctx_destroy (first);
1207 }
1208
739 ++cctx_idle; 1209 ++cctx_idle;
740 cctx->next = cctx_first; 1210 cctx->next = cctx_first;
741 cctx_first = cctx; 1211 cctx_first = cctx;
742} 1212}
743 1213
744/* never call directly, always through the coro_state_transfer global variable */ 1214/** coroutine switching *****************************************************/
1215
1216static void
1217transfer_check (pTHX_ struct coro *prev, struct coro *next)
1218{
1219 if (expect_true (prev != next))
1220 {
1221 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1222 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1223
1224 if (expect_false (next->flags & CF_RUNNING))
1225 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1226
1227 if (expect_false (next->flags & CF_DESTROYED))
1228 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1229
1230#if !PERL_VERSION_ATLEAST (5,10,0)
1231 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1232 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1233#endif
1234 }
1235}
1236
1237/* always use the TRANSFER macro */
745static void NOINLINE 1238static void NOINLINE
746transfer (struct coro *prev, struct coro *next, int flags) 1239transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
747{ 1240{
748 dSTACKLEVEL; 1241 dSTACKLEVEL;
749 1242
750 /* sometimes transfer is only called to set idle_sp */ 1243 /* sometimes transfer is only called to set idle_sp */
751 if (flags == TRANSFER_SET_STACKLEVEL) 1244 if (expect_false (!next))
1245 {
752 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1246 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
753 else if (prev != next) 1247 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
754 { 1248 }
1249 else if (expect_true (prev != next))
1250 {
1251 static volatile int has_throw;
755 coro_cctx *prev__cctx; 1252 coro_cctx *prev__cctx;
756 1253
1254 if (expect_false (prev->flags & CF_NEW))
1255 {
1256 /* create a new empty/source context */
1257 ++cctx_count;
1258 New (0, prev->cctx, 1, coro_cctx);
1259 prev->cctx->sptr = 0;
1260 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1261
1262 prev->flags &= ~CF_NEW;
1263 prev->flags |= CF_RUNNING;
1264 }
1265
1266 prev->flags &= ~CF_RUNNING;
1267 next->flags |= CF_RUNNING;
1268
757 LOCK; 1269 LOCK;
758 1270
759 if (next->mainstack) 1271 /* first get rid of the old state */
1272 save_perl (aTHX_ prev);
1273
1274 if (expect_false (next->flags & CF_NEW))
760 { 1275 {
761 /* coroutine already started */ 1276 /* need to start coroutine */
762 SAVE (prev, flags); 1277 next->flags &= ~CF_NEW;
763 LOAD (next); 1278 /* setup coroutine call */
1279 coro_setup (aTHX_ next);
764 } 1280 }
765 else 1281 else
1282 load_perl (aTHX_ next);
1283
1284 prev__cctx = prev->cctx;
1285
1286 /* possibly "free" the cctx */
1287 if (expect_true (
1288 prev__cctx->idle_sp == STACKLEVEL
1289 && !(prev__cctx->flags & CC_TRACE)
1290 && !force_cctx
1291 ))
766 { 1292 {
767 /* need to start coroutine */ 1293 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
768 /* first get rid of the old state */ 1294 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
769 SAVE (prev, -1); 1295
770 /* setup coroutine call */
771 setup_coro (next);
772 /* need a stack */
773 next->cctx = 0; 1296 prev->cctx = 0;
1297
1298 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1299 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1300 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1301 if (!next->cctx)
1302 next->cctx = cctx_get (aTHX);
1303
1304 cctx_put (prev__cctx);
774 } 1305 }
775 1306
776 if (!prev->cctx) 1307 ++next->usecount;
777 /* create a new empty context */
778 Newz (0, prev->cctx, 1, coro_cctx);
779 1308
780 prev__cctx = prev->cctx;
781
782 /* possibly "free" the cctx */
783 if (prev__cctx->idle_sp == STACKLEVEL)
784 {
785 cctx_put (prev__cctx);
786 prev->cctx = 0;
787 }
788
789 if (!next->cctx) 1309 if (expect_true (!next->cctx))
790 next->cctx = cctx_get (); 1310 next->cctx = cctx_get (aTHX);
791 1311
1312 has_throw = !!next->throw;
1313
792 if (prev__cctx != next->cctx) 1314 if (expect_false (prev__cctx != next->cctx))
793 { 1315 {
794 prev__cctx->top_env = PL_top_env; 1316 prev__cctx->top_env = PL_top_env;
795 PL_top_env = next->cctx->top_env; 1317 PL_top_env = next->cctx->top_env;
796 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1318 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
797 } 1319 }
798 1320
799 free_coro_mortal (); 1321 free_coro_mortal (aTHX);
800
801 UNLOCK; 1322 UNLOCK;
1323
1324 if (expect_false (has_throw))
1325 {
1326 struct coro *coro = SvSTATE (coro_current);
1327
1328 if (coro->throw)
1329 {
1330 SV *exception = coro->throw;
1331 coro->throw = 0;
1332 sv_setsv (ERRSV, exception);
1333 croak (0);
1334 }
1335 }
802 } 1336 }
803} 1337}
804 1338
805struct transfer_args 1339struct transfer_args
806{ 1340{
807 struct coro *prev, *next; 1341 struct coro *prev, *next;
808 int flags;
809}; 1342};
810 1343
1344#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
811#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1345#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
812 1346
1347/** high level stuff ********************************************************/
1348
813static void 1349static int
814coro_state_destroy (struct coro *coro) 1350coro_state_destroy (pTHX_ struct coro *coro)
815{ 1351{
816 if (coro->refcnt--) 1352 if (coro->flags & CF_DESTROYED)
817 return; 1353 return 0;
1354
1355 coro->flags |= CF_DESTROYED;
1356
1357 if (coro->flags & CF_READY)
1358 {
1359 /* reduce nready, as destroying a ready coro effectively unreadies it */
1360 /* alternative: look through all ready queues and remove the coro */
1361 LOCK;
1362 --coro_nready;
1363 UNLOCK;
1364 }
1365 else
1366 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
818 1367
819 if (coro->mainstack && coro->mainstack != main_mainstack) 1368 if (coro->mainstack && coro->mainstack != main_mainstack)
820 { 1369 {
821 struct coro temp; 1370 struct coro temp;
822 1371
823 SAVE ((&temp), TRANSFER_SAVE_ALL); 1372 if (coro->flags & CF_RUNNING)
824 LOAD (coro); 1373 croak ("FATAL: tried to destroy currently running coroutine");
825 1374
826 coro_destroy_stacks (); 1375 save_perl (aTHX_ &temp);
1376 load_perl (aTHX_ coro);
827 1377
828 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1378 coro_destruct (aTHX_ coro);
829 1379
1380 load_perl (aTHX_ &temp);
1381
830 coro->mainstack = 0; 1382 coro->slot = 0;
831 } 1383 }
832 1384
833 cctx_free (coro->cctx); 1385 cctx_destroy (coro->cctx);
834 SvREFCNT_dec (coro->args); 1386 SvREFCNT_dec (coro->args);
835 Safefree (coro); 1387
1388 if (coro->next) coro->next->prev = coro->prev;
1389 if (coro->prev) coro->prev->next = coro->next;
1390 if (coro == coro_first) coro_first = coro->next;
1391
1392 return 1;
836} 1393}
837 1394
838static int 1395static int
839coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1396coro_state_free (pTHX_ SV *sv, MAGIC *mg)
840{ 1397{
841 struct coro *coro = (struct coro *)mg->mg_ptr; 1398 struct coro *coro = (struct coro *)mg->mg_ptr;
842 mg->mg_ptr = 0; 1399 mg->mg_ptr = 0;
843 1400
1401 coro->hv = 0;
1402
1403 if (--coro->refcnt < 0)
1404 {
844 coro_state_destroy (coro); 1405 coro_state_destroy (aTHX_ coro);
1406 Safefree (coro);
1407 }
845 1408
846 return 0; 1409 return 0;
847} 1410}
848 1411
849static int 1412static int
… …
856 return 0; 1419 return 0;
857} 1420}
858 1421
859static MGVTBL coro_state_vtbl = { 1422static MGVTBL coro_state_vtbl = {
860 0, 0, 0, 0, 1423 0, 0, 0, 0,
861 coro_state_clear, 1424 coro_state_free,
862 0, 1425 0,
863#ifdef MGf_DUP 1426#ifdef MGf_DUP
864 coro_state_dup, 1427 coro_state_dup,
865#else 1428#else
866# define MGf_DUP 0 1429# define MGf_DUP 0
867#endif 1430#endif
868}; 1431};
869 1432
870static struct coro *
871SvSTATE (SV *coro)
872{
873 HV *stash;
874 MAGIC *mg;
875
876 if (SvROK (coro))
877 coro = SvRV (coro);
878
879 stash = SvSTASH (coro);
880 if (stash != coro_stash && stash != coro_state_stash)
881 {
882 /* very slow, but rare, check */
883 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
884 croak ("Coro::State object required");
885 }
886
887 mg = SvMAGIC (coro);
888 assert (mg->mg_type == PERL_MAGIC_ext);
889 return (struct coro *)mg->mg_ptr;
890}
891
892static void 1433static void
893prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1434prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
894{ 1435{
895 ta->prev = SvSTATE (prev); 1436 ta->prev = SvSTATE (prev_sv);
896 ta->next = SvSTATE (next); 1437 ta->next = SvSTATE (next_sv);
897 ta->flags = flags; 1438 TRANSFER_CHECK (*ta);
898} 1439}
899 1440
900static void 1441static void
901api_transfer (SV *prev, SV *next, int flags) 1442api_transfer (SV *prev_sv, SV *next_sv)
902{ 1443{
903 dTHX; 1444 dTHX;
904 struct transfer_args ta; 1445 struct transfer_args ta;
905 1446
906 prepare_transfer (&ta, prev, next, flags); 1447 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
907 TRANSFER (ta); 1448 TRANSFER (ta, 1);
908} 1449}
909 1450
910/** Coro ********************************************************************/ 1451/** Coro ********************************************************************/
911 1452
912#define PRIO_MAX 3
913#define PRIO_HIGH 1
914#define PRIO_NORMAL 0
915#define PRIO_LOW -1
916#define PRIO_IDLE -3
917#define PRIO_MIN -4
918
919/* for Coro.pm */
920static GV *coro_current, *coro_idle;
921static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922static int coro_nready;
923
924static void 1453static void
925coro_enq (SV *sv) 1454coro_enq (pTHX_ SV *coro_sv)
1455{
1456 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1457}
1458
1459static SV *
1460coro_deq (pTHX)
926{ 1461{
927 int prio; 1462 int prio;
928 1463
929 if (SvTYPE (sv) != SVt_PVHV)
930 croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932 prio = SvSTATE (sv)->prio;
933
934 av_push (coro_ready [prio - PRIO_MIN], sv);
935 coro_nready++;
936}
937
938static SV *
939coro_deq (int min_prio)
940{
941 int prio = PRIO_MAX - PRIO_MIN;
942
943 min_prio -= PRIO_MIN;
944 if (min_prio < 0)
945 min_prio = 0;
946
947 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1464 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
948 if (AvFILLp (coro_ready [prio]) >= 0) 1465 if (AvFILLp (coro_ready [prio]) >= 0)
949 {
950 coro_nready--;
951 return av_shift (coro_ready [prio]); 1466 return av_shift (coro_ready [prio]);
952 }
953 1467
954 return 0; 1468 return 0;
955} 1469}
956 1470
1471static int
1472api_ready (SV *coro_sv)
1473{
1474 dTHX;
1475 struct coro *coro;
1476 SV *sv_hook;
1477 void (*xs_hook)(void);
1478
1479 if (SvROK (coro_sv))
1480 coro_sv = SvRV (coro_sv);
1481
1482 coro = SvSTATE (coro_sv);
1483
1484 if (coro->flags & CF_READY)
1485 return 0;
1486
1487 coro->flags |= CF_READY;
1488
1489 LOCK;
1490
1491 sv_hook = coro_nready ? 0 : coro_readyhook;
1492 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1493
1494 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1495 ++coro_nready;
1496
1497 UNLOCK;
1498
1499 if (sv_hook)
1500 {
1501 dSP;
1502
1503 ENTER;
1504 SAVETMPS;
1505
1506 PUSHMARK (SP);
1507 PUTBACK;
1508 call_sv (sv_hook, G_DISCARD);
1509 SPAGAIN;
1510
1511 FREETMPS;
1512 LEAVE;
1513 }
1514
1515 if (xs_hook)
1516 xs_hook ();
1517
1518 return 1;
1519}
1520
1521static int
1522api_is_ready (SV *coro_sv)
1523{
1524 dTHX;
1525 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1526}
1527
957static void 1528static void
958api_ready (SV *coro) 1529prepare_schedule (pTHX_ struct transfer_args *ta)
959{ 1530{
960 dTHX; 1531 SV *prev_sv, *next_sv;
961 1532
962 if (SvROK (coro)) 1533 for (;;)
963 coro = SvRV (coro); 1534 {
1535 LOCK;
1536 next_sv = coro_deq (aTHX);
1537
1538 /* nothing to schedule: call the idle handler */
1539 if (expect_false (!next_sv))
1540 {
1541 dSP;
1542 UNLOCK;
1543
1544 ENTER;
1545 SAVETMPS;
1546
1547 PUSHMARK (SP);
1548 PUTBACK;
1549 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1550 SPAGAIN;
1551
1552 FREETMPS;
1553 LEAVE;
1554 continue;
1555 }
1556
1557 ta->next = SvSTATE (next_sv);
1558
1559 /* cannot transfer to destroyed coros, skip and look for next */
1560 if (expect_false (ta->next->flags & CF_DESTROYED))
1561 {
1562 UNLOCK;
1563 SvREFCNT_dec (next_sv);
1564 /* coro_nready is already taken care of by destroy */
1565 continue;
1566 }
1567
1568 --coro_nready;
1569 UNLOCK;
1570 break;
1571 }
1572
1573 /* free this only after the transfer */
1574 prev_sv = SvRV (coro_current);
1575 ta->prev = SvSTATE (prev_sv);
1576 TRANSFER_CHECK (*ta);
1577 assert (ta->next->flags & CF_READY);
1578 ta->next->flags &= ~CF_READY;
1579 SvRV_set (coro_current, next_sv);
964 1580
965 LOCK; 1581 LOCK;
966 coro_enq (SvREFCNT_inc (coro)); 1582 free_coro_mortal (aTHX);
1583 coro_mortal = prev_sv;
967 UNLOCK; 1584 UNLOCK;
968} 1585}
969 1586
970static void 1587static void
971prepare_schedule (struct transfer_args *ta)
972{
973 SV *current, *prev, *next;
974
975 current = GvSV (coro_current);
976
977 for (;;)
978 {
979 LOCK;
980 next = coro_deq (PRIO_MIN);
981 UNLOCK;
982
983 if (next)
984 break;
985
986 {
987 dSP;
988
989 ENTER;
990 SAVETMPS;
991
992 PUSHMARK (SP);
993 PUTBACK;
994 call_sv (GvSV (coro_idle), G_DISCARD);
995
996 FREETMPS;
997 LEAVE;
998 }
999 }
1000
1001 prev = SvRV (current);
1002 SvRV (current) = next;
1003
1004 /* free this only after the transfer */
1005 LOCK;
1006 free_coro_mortal ();
1007 UNLOCK;
1008 coro_mortal = prev;
1009
1010 ta->prev = SvSTATE (prev);
1011 ta->next = SvSTATE (next);
1012 ta->flags = TRANSFER_SAVE_ALL;
1013}
1014
1015static void
1016prepare_cede (struct transfer_args *ta) 1588prepare_cede (pTHX_ struct transfer_args *ta)
1017{ 1589{
1018 LOCK; 1590 api_ready (coro_current);
1019 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020 UNLOCK;
1021
1022 prepare_schedule (ta); 1591 prepare_schedule (aTHX_ ta);
1592}
1593
1594static int
1595prepare_cede_notself (pTHX_ struct transfer_args *ta)
1596{
1597 if (coro_nready)
1598 {
1599 SV *prev = SvRV (coro_current);
1600 prepare_schedule (aTHX_ ta);
1601 api_ready (prev);
1602 return 1;
1603 }
1604 else
1605 return 0;
1023} 1606}
1024 1607
1025static void 1608static void
1026api_schedule (void) 1609api_schedule (void)
1027{ 1610{
1028 dTHX; 1611 dTHX;
1029 struct transfer_args ta; 1612 struct transfer_args ta;
1030 1613
1031 prepare_schedule (&ta); 1614 prepare_schedule (aTHX_ &ta);
1032 TRANSFER (ta); 1615 TRANSFER (ta, 1);
1033} 1616}
1034 1617
1035static void 1618static int
1036api_cede (void) 1619api_cede (void)
1037{ 1620{
1038 dTHX; 1621 dTHX;
1039 struct transfer_args ta; 1622 struct transfer_args ta;
1040 1623
1041 prepare_cede (&ta); 1624 prepare_cede (aTHX_ &ta);
1625
1626 if (expect_true (ta.prev != ta.next))
1627 {
1042 TRANSFER (ta); 1628 TRANSFER (ta, 1);
1629 return 1;
1630 }
1631 else
1632 return 0;
1043} 1633}
1044 1634
1635static int
1636api_cede_notself (void)
1637{
1638 dTHX;
1639 struct transfer_args ta;
1640
1641 if (prepare_cede_notself (aTHX_ &ta))
1642 {
1643 TRANSFER (ta, 1);
1644 return 1;
1645 }
1646 else
1647 return 0;
1648}
1649
1650static void
1651api_trace (SV *coro_sv, int flags)
1652{
1653 dTHX;
1654 struct coro *coro = SvSTATE (coro_sv);
1655
1656 if (flags & CC_TRACE)
1657 {
1658 if (!coro->cctx)
1659 coro->cctx = cctx_new ();
1660 else if (!(coro->cctx->flags & CC_TRACE))
1661 croak ("cannot enable tracing on coroutine with custom stack");
1662
1663 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1664 }
1665 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1666 {
1667 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1668
1669 if (coro->flags & CF_RUNNING)
1670 PL_runops = RUNOPS_DEFAULT;
1671 else
1672 coro->slot->runops = RUNOPS_DEFAULT;
1673 }
1674}
1675
1676#if 0
1677static int
1678coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1679{
1680 AV *padlist;
1681 AV *av = (AV *)mg->mg_obj;
1682
1683 abort ();
1684
1685 return 0;
1686}
1687
1688static MGVTBL coro_gensub_vtbl = {
1689 0, 0, 0, 0,
1690 coro_gensub_free
1691};
1692#endif
1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede ();
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769
1045MODULE = Coro::State PACKAGE = Coro::State 1770MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1046 1771
1047PROTOTYPES: DISABLE 1772PROTOTYPES: DISABLE
1048 1773
1049BOOT: 1774BOOT:
1050{ 1775{
1051#ifdef USE_ITHREADS 1776#ifdef USE_ITHREADS
1052 MUTEX_INIT (&coro_mutex); 1777 MUTEX_INIT (&coro_lock);
1778# if CORO_PTHREAD
1779 coro_thx = PERL_GET_CONTEXT;
1780# endif
1053#endif 1781#endif
1054 BOOT_PAGESIZE; 1782 BOOT_PAGESIZE;
1055 1783
1784 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1785 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1786
1787 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1788 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1789 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1790
1791 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1792 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1793 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1794
1056 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1795 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1057 1796
1058 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1797 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1059 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1798 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1060 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1799 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1800 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1061 1801
1062 main_mainstack = PL_mainstack; 1802 main_mainstack = PL_mainstack;
1803 main_top_env = PL_top_env;
1063 1804
1805 while (main_top_env->je_prev)
1806 main_top_env = main_top_env->je_prev;
1807
1064 coroapi.ver = CORO_API_VERSION; 1808 coroapi.ver = CORO_API_VERSION;
1809 coroapi.rev = CORO_API_REVISION;
1065 coroapi.transfer = api_transfer; 1810 coroapi.transfer = api_transfer;
1811
1812 {
1813 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1814
1815 if (!svp) croak ("Time::HiRes is required");
1816 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1817
1818 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1819 }
1066 1820
1067 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1821 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1068} 1822}
1069 1823
1070SV * 1824SV *
1071new (char *klass, ...) 1825new (char *klass, ...)
1072 CODE: 1826 CODE:
1073{ 1827{
1074 struct coro *coro; 1828 struct coro *coro;
1829 MAGIC *mg;
1075 HV *hv; 1830 HV *hv;
1076 int i; 1831 int i;
1077 1832
1078 Newz (0, coro, 1, struct coro); 1833 Newz (0, coro, 1, struct coro);
1079 coro->args = newAV (); 1834 coro->args = newAV ();
1835 coro->flags = CF_NEW;
1080 1836
1837 if (coro_first) coro_first->prev = coro;
1838 coro->next = coro_first;
1839 coro_first = coro;
1840
1081 hv = newHV (); 1841 coro->hv = hv = newHV ();
1082 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1842 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1843 mg->mg_flags |= MGf_DUP;
1083 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1844 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084 1845
1846 av_extend (coro->args, items - 1);
1085 for (i = 1; i < items; i++) 1847 for (i = 1; i < items; i++)
1086 av_push (coro->args, newSVsv (ST (i))); 1848 av_push (coro->args, newSVsv (ST (i)));
1087} 1849}
1088 OUTPUT: 1850 OUTPUT:
1089 RETVAL 1851 RETVAL
1090 1852
1853# these not obviously related functions are all rolled into the same xs
1854# function to increase chances that they all will call transfer with the same
1855# stack offset
1091void 1856void
1092_set_stacklevel (...) 1857_set_stacklevel (...)
1093 ALIAS: 1858 ALIAS:
1094 Coro::State::transfer = 1 1859 Coro::State::transfer = 1
1095 Coro::schedule = 2 1860 Coro::schedule = 2
1096 Coro::cede = 3 1861 Coro::cede = 3
1097 Coro::Cont::yield = 4 1862 Coro::cede_notself = 4
1098 CODE: 1863 CODE:
1099{ 1864{
1100 struct transfer_args ta; 1865 struct transfer_args ta;
1101 1866
1867 PUTBACK;
1102 switch (ix) 1868 switch (ix)
1103 { 1869 {
1104 case 0: 1870 case 0:
1105 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1871 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1106 ta.next = 0; 1872 ta.next = 0;
1107 ta.flags = TRANSFER_SET_STACKLEVEL;
1108 break; 1873 break;
1109 1874
1110 case 1: 1875 case 1:
1111 if (items != 3) 1876 if (items != 2)
1112 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1877 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1113 1878
1114 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1879 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1115 break; 1880 break;
1116 1881
1117 case 2: 1882 case 2:
1118 prepare_schedule (&ta); 1883 prepare_schedule (aTHX_ &ta);
1119 break; 1884 break;
1120 1885
1121 case 3: 1886 case 3:
1122 prepare_cede (&ta); 1887 prepare_cede (aTHX_ &ta);
1123 break; 1888 break;
1124 1889
1125 case 4: 1890 case 4:
1126 { 1891 if (!prepare_cede_notself (aTHX_ &ta))
1127 SV *yieldstack; 1892 XSRETURN_EMPTY;
1128 SV *sv;
1129 AV *defav = GvAV (PL_defgv);
1130 1893
1131 yieldstack = *hv_fetch (
1132 (HV *)SvRV (GvSV (coro_current)),
1133 "yieldstack", sizeof ("yieldstack") - 1,
1134 0
1135 );
1136
1137 /* set up @_ -- ugly */
1138 av_clear (defav);
1139 av_fill (defav, items - 1);
1140 while (items--)
1141 av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143 sv = av_pop ((AV *)SvRV (yieldstack));
1144 ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1145 ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1146 ta.flags = 0;
1147 SvREFCNT_dec (sv);
1148 }
1149 break; 1894 break;
1150
1151 } 1895 }
1896 SPAGAIN;
1152 1897
1898 BARRIER;
1899 PUTBACK;
1153 TRANSFER (ta); 1900 TRANSFER (ta, 0);
1901 SPAGAIN; /* might be the sp of a different coroutine now */
1902 /* be extra careful not to ever do anything after TRANSFER */
1154} 1903}
1904
1905bool
1906_destroy (SV *coro_sv)
1907 CODE:
1908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1909 OUTPUT:
1910 RETVAL
1155 1911
1156void 1912void
1157_clone_state_from (SV *dst, SV *src)
1158 CODE:
1159{
1160 struct coro *coro_src = SvSTATE (src);
1161
1162 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1163
1164 ++coro_src->refcnt;
1165 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1166}
1167
1168void
1169_exit (code) 1913_exit (int code)
1170 int code
1171 PROTOTYPE: $ 1914 PROTOTYPE: $
1172 CODE: 1915 CODE:
1173 _exit (code); 1916 _exit (code);
1917
1918int
1919cctx_stacksize (int new_stacksize = 0)
1920 CODE:
1921 RETVAL = cctx_stacksize;
1922 if (new_stacksize)
1923 {
1924 cctx_stacksize = new_stacksize;
1925 ++cctx_gen;
1926 }
1927 OUTPUT:
1928 RETVAL
1929
1930int
1931cctx_max_idle (int max_idle = 0)
1932 CODE:
1933 RETVAL = cctx_max_idle;
1934 if (max_idle > 1)
1935 cctx_max_idle = max_idle;
1936 OUTPUT:
1937 RETVAL
1174 1938
1175int 1939int
1176cctx_count () 1940cctx_count ()
1177 CODE: 1941 CODE:
1178 RETVAL = cctx_count; 1942 RETVAL = cctx_count;
… …
1184 CODE: 1948 CODE:
1185 RETVAL = cctx_idle; 1949 RETVAL = cctx_idle;
1186 OUTPUT: 1950 OUTPUT:
1187 RETVAL 1951 RETVAL
1188 1952
1953void
1954list ()
1955 PPCODE:
1956{
1957 struct coro *coro;
1958 for (coro = coro_first; coro; coro = coro->next)
1959 if (coro->hv)
1960 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1961}
1962
1963void
1964call (Coro::State coro, SV *coderef)
1965 ALIAS:
1966 eval = 1
1967 CODE:
1968{
1969 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1970 {
1971 struct coro temp;
1972
1973 if (!(coro->flags & CF_RUNNING))
1974 {
1975 PUTBACK;
1976 save_perl (aTHX_ &temp);
1977 load_perl (aTHX_ coro);
1978 }
1979
1980 {
1981 dSP;
1982 ENTER;
1983 SAVETMPS;
1984 PUTBACK;
1985 PUSHSTACK;
1986 PUSHMARK (SP);
1987
1988 if (ix)
1989 eval_sv (coderef, 0);
1990 else
1991 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1992
1993 POPSTACK;
1994 SPAGAIN;
1995 FREETMPS;
1996 LEAVE;
1997 PUTBACK;
1998 }
1999
2000 if (!(coro->flags & CF_RUNNING))
2001 {
2002 save_perl (aTHX_ coro);
2003 load_perl (aTHX_ &temp);
2004 SPAGAIN;
2005 }
2006 }
2007}
2008
2009SV *
2010is_ready (Coro::State coro)
2011 PROTOTYPE: $
2012 ALIAS:
2013 is_ready = CF_READY
2014 is_running = CF_RUNNING
2015 is_new = CF_NEW
2016 is_destroyed = CF_DESTROYED
2017 CODE:
2018 RETVAL = boolSV (coro->flags & ix);
2019 OUTPUT:
2020 RETVAL
2021
2022void
2023api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2024
2025SV *
2026has_cctx (Coro::State coro)
2027 PROTOTYPE: $
2028 CODE:
2029 RETVAL = boolSV (!!coro->cctx);
2030 OUTPUT:
2031 RETVAL
2032
2033int
2034is_traced (Coro::State coro)
2035 PROTOTYPE: $
2036 CODE:
2037 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2038 OUTPUT:
2039 RETVAL
2040
2041UV
2042rss (Coro::State coro)
2043 PROTOTYPE: $
2044 ALIAS:
2045 usecount = 1
2046 CODE:
2047 switch (ix)
2048 {
2049 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2050 case 1: RETVAL = coro->usecount; break;
2051 }
2052 OUTPUT:
2053 RETVAL
2054
2055void
2056force_cctx ()
2057 CODE:
2058 struct coro *coro = SvSTATE (coro_current);
2059 coro->cctx->idle_sp = 0;
2060
2061void
2062swap_defsv (Coro::State self)
2063 PROTOTYPE: $
2064 ALIAS:
2065 swap_defav = 1
2066 CODE:
2067 if (!self->slot)
2068 croak ("cannot swap state with coroutine that has no saved state");
2069 else
2070 {
2071 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2072 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2073
2074 SV *tmp = *src; *src = *dst; *dst = tmp;
2075 }
2076
1189MODULE = Coro::State PACKAGE = Coro 2077MODULE = Coro::State PACKAGE = Coro
1190 2078
1191BOOT: 2079BOOT:
1192{ 2080{
1193 int i; 2081 int i;
1194 2082
2083 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2084 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2085 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2086
2087 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2088 SvREADONLY_on (coro_current);
2089
1195 coro_stash = gv_stashpv ("Coro", TRUE); 2090 coro_stash = gv_stashpv ("Coro", TRUE);
1196 2091
1197 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2092 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1198 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2093 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1199 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2094 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2095 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2096 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2097 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203 2098
1204 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1205 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1206
1207 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2099 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208 coro_ready[i] = newAV (); 2100 coro_ready[i] = newAV ();
1209 2101
1210 { 2102 {
1211 SV *sv = perl_get_sv("Coro::API", 1); 2103 SV *sv = perl_get_sv ("Coro::API", TRUE);
2104 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1212 2105
1213 coroapi.schedule = api_schedule; 2106 coroapi.schedule = api_schedule;
1214 coroapi.cede = api_cede; 2107 coroapi.cede = api_cede;
2108 coroapi.cede_notself = api_cede_notself;
1215 coroapi.ready = api_ready; 2109 coroapi.ready = api_ready;
2110 coroapi.is_ready = api_is_ready;
1216 coroapi.nready = &coro_nready; 2111 coroapi.nready = &coro_nready;
1217 coroapi.current = coro_current; 2112 coroapi.current = coro_current;
1218 2113
1219 GCoroAPI = &coroapi; 2114 GCoroAPI = &coroapi;
1220 sv_setiv (sv, (IV)&coroapi); 2115 sv_setiv (sv, (IV)&coroapi);
1221 SvREADONLY_on (sv); 2116 SvREADONLY_on (sv);
1222 } 2117 }
1223} 2118}
2119
2120void
2121_set_current (SV *current)
2122 PROTOTYPE: $
2123 CODE:
2124 SvREFCNT_dec (SvRV (coro_current));
2125 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2126
2127void
2128_set_readyhook (SV *hook)
2129 PROTOTYPE: $
2130 CODE:
2131 LOCK;
2132 SvREFCNT_dec (coro_readyhook);
2133 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2134 UNLOCK;
1224 2135
1225int 2136int
1226prio (Coro::State coro, int newprio = 0) 2137prio (Coro::State coro, int newprio = 0)
1227 ALIAS: 2138 ALIAS:
1228 nice = 1 2139 nice = 1
… …
1231 RETVAL = coro->prio; 2142 RETVAL = coro->prio;
1232 2143
1233 if (items > 1) 2144 if (items > 1)
1234 { 2145 {
1235 if (ix) 2146 if (ix)
1236 newprio += coro->prio; 2147 newprio = coro->prio - newprio;
1237 2148
1238 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2149 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1239 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2150 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1240 2151
1241 coro->prio = newprio; 2152 coro->prio = newprio;
1242 } 2153 }
1243} 2154}
2155 OUTPUT:
2156 RETVAL
1244 2157
1245void 2158SV *
1246ready (SV *self) 2159ready (SV *self)
1247 PROTOTYPE: $ 2160 PROTOTYPE: $
1248 CODE: 2161 CODE:
1249 api_ready (self); 2162 RETVAL = boolSV (api_ready (self));
2163 OUTPUT:
2164 RETVAL
1250 2165
1251int 2166int
1252nready (...) 2167nready (...)
1253 PROTOTYPE: 2168 PROTOTYPE:
1254 CODE: 2169 CODE:
1255 RETVAL = coro_nready; 2170 RETVAL = coro_nready;
1256 OUTPUT: 2171 OUTPUT:
1257 RETVAL 2172 RETVAL
1258 2173
1259MODULE = Coro::State PACKAGE = Coro::AIO 2174void
2175throw (Coro::State self, SV *throw = &PL_sv_undef)
2176 PROTOTYPE: $;$
2177 CODE:
2178 SvREFCNT_dec (self->throw);
2179 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2180
2181# for async_pool speedup
2182void
2183_pool_1 (SV *cb)
2184 CODE:
2185{
2186 struct coro *coro = SvSTATE (coro_current);
2187 HV *hv = (HV *)SvRV (coro_current);
2188 AV *defav = GvAV (PL_defgv);
2189 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2190 AV *invoke_av;
2191 int i, len;
2192
2193 if (!invoke)
2194 {
2195 SV *old = PL_diehook;
2196 PL_diehook = 0;
2197 SvREFCNT_dec (old);
2198 croak ("\3async_pool terminate\2\n");
2199 }
2200
2201 SvREFCNT_dec (coro->saved_deffh);
2202 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2203
2204 hv_store (hv, "desc", sizeof ("desc") - 1,
2205 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2206
2207 invoke_av = (AV *)SvRV (invoke);
2208 len = av_len (invoke_av);
2209
2210 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2211
2212 if (len > 0)
2213 {
2214 av_fill (defav, len - 1);
2215 for (i = 0; i < len; ++i)
2216 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2217 }
2218
2219 SvREFCNT_dec (invoke);
2220}
2221
2222void
2223_pool_2 (SV *cb)
2224 CODE:
2225{
2226 struct coro *coro = SvSTATE (coro_current);
2227
2228 sv_setsv (cb, &PL_sv_undef);
2229
2230 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2231 coro->saved_deffh = 0;
2232
2233 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2234 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2235 {
2236 SV *old = PL_diehook;
2237 PL_diehook = 0;
2238 SvREFCNT_dec (old);
2239 croak ("\3async_pool terminate\2\n");
2240 }
2241
2242 av_clear (GvAV (PL_defgv));
2243 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2244 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2245
2246 coro->prio = 0;
2247
2248 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2249 api_trace (coro_current, 0);
2250
2251 av_push (av_async_pool, newSVsv (coro_current));
2252}
2253
2254#if 0
2255
2256void
2257_generator_call (...)
2258 PROTOTYPE: @
2259 PPCODE:
2260 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2261 xxxx
2262 abort ();
1260 2263
1261SV * 2264SV *
1262_get_state () 2265gensub (SV *sub, ...)
1263 CODE: 2266 PROTOTYPE: &;@
2267 CODE:
1264{ 2268{
1265 struct { 2269 struct coro *coro;
1266 int errorno; 2270 MAGIC *mg;
1267 int laststype; 2271 CV *xcv;
1268 int laststatval; 2272 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1269 Stat_t statcache; 2273 int i;
1270 } data;
1271 2274
1272 data.errorno = errno; 2275 CvGV (ncv) = CvGV (cv);
1273 data.laststype = PL_laststype; 2276 CvFILE (ncv) = CvFILE (cv);
1274 data.laststatval = PL_laststatval;
1275 data.statcache = PL_statcache;
1276 2277
1277 RETVAL = newSVpvn ((char *)&data, sizeof data); 2278 Newz (0, coro, 1, struct coro);
2279 coro->args = newAV ();
2280 coro->flags = CF_NEW;
2281
2282 av_extend (coro->args, items - 1);
2283 for (i = 1; i < items; i++)
2284 av_push (coro->args, newSVsv (ST (i)));
2285
2286 CvISXSUB_on (ncv);
2287 CvXSUBANY (ncv).any_ptr = (void *)coro;
2288
2289 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2290
2291 CvXSUB (ncv) = CvXSUB (xcv);
2292 CvANON_on (ncv);
2293
2294 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2295 RETVAL = newRV_noinc ((SV *)ncv);
1278} 2296}
1279 OUTPUT: 2297 OUTPUT:
1280 RETVAL 2298 RETVAL
1281 2299
2300#endif
2301
2302
2303MODULE = Coro::State PACKAGE = Coro::AIO
2304
1282void 2305void
1283_set_state (char *data_) 2306_get_state (SV *self)
2307 PPCODE:
2308{
2309 AV *defav = GvAV (PL_defgv);
2310 AV *av = newAV ();
2311 int i;
2312 SV *data_sv = newSV (sizeof (struct io_state));
2313 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2314 SvCUR_set (data_sv, sizeof (struct io_state));
2315 SvPOK_only (data_sv);
2316
2317 data->errorno = errno;
2318 data->laststype = PL_laststype;
2319 data->laststatval = PL_laststatval;
2320 data->statcache = PL_statcache;
2321
2322 av_extend (av, AvFILLp (defav) + 1 + 1);
2323
2324 for (i = 0; i <= AvFILLp (defav); ++i)
2325 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2326
2327 av_push (av, data_sv);
2328
2329 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2330
2331 api_ready (self);
2332}
2333
2334void
2335_set_state (SV *state)
1284 PROTOTYPE: $ 2336 PROTOTYPE: $
2337 PPCODE:
2338{
2339 AV *av = (AV *)SvRV (state);
2340 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2341 int i;
2342
2343 errno = data->errorno;
2344 PL_laststype = data->laststype;
2345 PL_laststatval = data->laststatval;
2346 PL_statcache = data->statcache;
2347
2348 EXTEND (SP, AvFILLp (av));
2349 for (i = 0; i < AvFILLp (av); ++i)
2350 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2351}
2352
2353
2354MODULE = Coro::State PACKAGE = Coro::AnyEvent
2355
2356BOOT:
2357 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2358
2359SV *
2360_schedule (...)
2361 PROTOTYPE: @
1285 CODE: 2362 CODE:
1286{ 2363{
1287 struct { 2364 static int incede;
1288 int errorno;
1289 int laststype;
1290 int laststatval;
1291 Stat_t statcache;
1292 } *data = (void *)data_;
1293 2365
1294 errno = data->errorno; 2366 api_cede_notself ();
1295 PL_laststype = data->laststype; 2367
1296 PL_laststatval = data->laststatval; 2368 ++incede;
1297 PL_statcache = data->statcache; 2369 while (coro_nready >= incede && api_cede ())
2370 ;
2371
2372 sv_setsv (sv_activity, &PL_sv_undef);
2373 if (coro_nready >= incede)
2374 {
2375 PUSHMARK (SP);
2376 PUTBACK;
2377 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2378 SPAGAIN;
2379 }
2380
2381 --incede;
1298} 2382}
2383
2384
2385MODULE = Coro::State PACKAGE = PerlIO::cede
2386
2387BOOT:
2388 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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