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Comparing Coro/Coro/State.xs (file contents):
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC vs.
Revision 1.326 by root, Mon Nov 24 04:56:38 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
38#endif 51#endif
39 52
40/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
42 55
43#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
47 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
48 61
49#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
50# ifndef PL_ppaddr 63# ifndef PL_ppaddr
51# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
52# endif 65# endif
… …
65# ifndef IS_PADCONST 78# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
67# endif 80# endif
68#endif 81#endif
69 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
70/* 5.8.7 */ 110/* 5.8.7 */
71#ifndef SvRV_set 111#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 113#endif
74 114
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 116# undef CORO_STACKGUARD
77#endif 117#endif
78 118
79#ifndef STACKGUARD 119#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 120# define CORO_STACKGUARD 0
81#endif 121#endif
82 122
83/* prefer perl internal functions over our own? */ 123/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 124#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 126#endif
87 127
88/* The next macro should declare a variable stacklevel that contains and approximation 128/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 129 * portable way as possible. */
90 * and should be unique. */ 130#if __GNUC__ >= 4
91#define dSTACKLEVEL int stacklevel 131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
134# define dSTACKLEVEL volatile void *stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
93 137
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 139
96#if __GNUC__ >= 3 140#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
99#else 144#else
100# define attribute(x) 145# define attribute(x)
101# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
102#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
103 152
104#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
105 154
106#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
107 157
108#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
109static perl_mutex coro_mutex; 159# if CORO_PTHREAD
110# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
111# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
112#else
113# define LOCK (void)0
114# define UNLOCK (void)0
115#endif 161# endif
162#endif
116 163
117struct io_state 164static double (*nvtime)(); /* so why doesn't it take void? */
118{
119 int errorno;
120 I32 laststype;
121 int laststatval;
122 Stat_t statcache;
123};
124 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
174static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187
188/* async_pool helper stuff */
189static SV *sv_pool_rss;
190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
129 199
130static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
132 202
203enum {
204 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */
209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
210};
211
133/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 213typedef struct coro_cctx
214{
135 struct coro_cctx *next; 215 struct coro_cctx *next;
136 216
137 /* the stack */ 217 /* the stack */
138 void *sptr; 218 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 219 size_t ssize;
140 220
141 /* cpu state */ 221 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 224 JMPENV *top_env;
145 coro_context cctx; 225 coro_context cctx;
146 226
147 int inuse; 227 U32 gen;
148
149#if USE_VALGRIND 228#if CORO_USE_VALGRIND
150 int valgrind_id; 229 int valgrind_id;
151#endif 230#endif
231 unsigned char flags;
152} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
153 237
154enum { 238enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
158 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
159}; 243};
160 244
161/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
162struct coro { 246typedef struct
163 /* the c coroutine allocated to this perl coroutine, if any */ 247{
164 coro_cctx *cctx; 248 SV *defsv;
165 249 AV *defav;
166 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
167 AV *args; 251 SV *irsgv;
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */
171
172 /* optionally saved, might be zero */
173 AV *defav; /* @_ */
174 SV *defsv; /* $_ */
175 SV *errsv; /* $@ */
176 SV *irssv; /* $/ */
177 SV *irssv_sv; /* real $/ cache */
178
179#define VAR(name,type) type name; 252#define VAR(name,type) type name;
180# include "state.h" 253# include "state.h"
181#undef VAR 254#undef VAR
255} perl_slots;
256
257#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
258
259/* this is a structure representing a perl-level coroutine */
260struct coro {
261 /* the C coroutine allocated to this perl coroutine, if any */
262 coro_cctx *cctx;
263
264 /* state data */
265 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
269 CV *startcv; /* the CV to execute */
270 AV *args; /* data associated with this coroutine (initial args) */
271 int refcnt; /* coroutines are refcounted, yes */
272 int flags; /* CF_ flags */
273 HV *hv; /* the perl hash associated with this coro, if any */
274 void (*on_destroy)(pTHX_ struct coro *coro);
275
276 /* statistics */
277 int usecount; /* number of transfers to this coro */
182 278
183 /* coro process data */ 279 /* coro process data */
184 int prio; 280 int prio;
281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
283
284 /* async_pool */
285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
288
289 /* linked list */
290 struct coro *next, *prev;
185}; 291};
186 292
187typedef struct coro *Coro__State; 293typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 294typedef struct coro *Coro__State_or_hashref;
189 295
296/* the following variables are effectively part of the perl context */
297/* and get copied between struct coro and these variables */
298/* the mainr easonw e don't support windows process emulation */
299static struct CoroSLF slf_frame; /* the current slf frame */
300
301/** Coro ********************************************************************/
302
303#define PRIO_MAX 3
304#define PRIO_HIGH 1
305#define PRIO_NORMAL 0
306#define PRIO_LOW -1
307#define PRIO_IDLE -3
308#define PRIO_MIN -4
309
310/* for Coro.pm */
311static SV *coro_current;
312static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
314static CV *cv_coro_run, *cv_coro_terminate;
315static struct coro *coro_first;
316#define coro_nready coroapi.nready
317
318/** lowlevel stuff **********************************************************/
319
320static SV *
321coro_get_sv (pTHX_ const char *name, int create)
322{
323#if PERL_VERSION_ATLEAST (5,10,0)
324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
325 get_sv (name, create);
326#endif
327 return get_sv (name, create);
328}
329
190static AV * 330static AV *
331coro_get_av (pTHX_ const char *name, int create)
332{
333#if PERL_VERSION_ATLEAST (5,10,0)
334 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
335 get_av (name, create);
336#endif
337 return get_av (name, create);
338}
339
340static HV *
341coro_get_hv (pTHX_ const char *name, int create)
342{
343#if PERL_VERSION_ATLEAST (5,10,0)
344 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
345 get_hv (name, create);
346#endif
347 return get_hv (name, create);
348}
349
350/* may croak */
351INLINE CV *
352coro_sv_2cv (pTHX_ SV *sv)
353{
354 HV *st;
355 GV *gvp;
356 return sv_2cv (sv, &st, &gvp, 0);
357}
358
359static AV *
191coro_clone_padlist (CV *cv) 360coro_derive_padlist (pTHX_ CV *cv)
192{ 361{
193 AV *padlist = CvPADLIST (cv); 362 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 363 AV *newpadlist, *newpad;
195 364
196 newpadlist = newAV (); 365 newpadlist = newAV ();
197 AvREAL_off (newpadlist); 366 AvREAL_off (newpadlist);
198#if PERL_VERSION_ATLEAST (5,9,0) 367#if PERL_VERSION_ATLEAST (5,10,0)
199 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 368 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
200#else 369#else
201 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 370 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
202#endif 371#endif
203 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 372 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
204 --AvFILLp (padlist); 373 --AvFILLp (padlist);
205 374
206 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 375 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
207 av_store (newpadlist, 1, (SV *)newpad); 376 av_store (newpadlist, 1, (SV *)newpad);
208 377
209 return newpadlist; 378 return newpadlist;
210} 379}
211 380
212static void 381static void
213free_padlist (AV *padlist) 382free_padlist (pTHX_ AV *padlist)
214{ 383{
215 /* may be during global destruction */ 384 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 385 if (SvREFCNT (padlist))
217 { 386 {
218 I32 i = AvFILLp (padlist); 387 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 408 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 409 AV *av = (AV *)mg->mg_obj;
241 410
242 /* casting is fun. */ 411 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 412 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 413 free_padlist (aTHX_ padlist);
245 414
246 SvREFCNT_dec (av); 415 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
247 416
248 return 0; 417 return 0;
249} 418}
250 419
420#define CORO_MAGIC_type_cv 26
251#define PERL_MAGIC_coro PERL_MAGIC_ext 421#define CORO_MAGIC_type_state PERL_MAGIC_ext
252 422
253static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 423static MGVTBL coro_cv_vtbl = {
424 0, 0, 0, 0,
425 coro_cv_free
426};
254 427
255#define CORO_MAGIC(cv) \ 428#define CORO_MAGIC_NN(sv, type) \
429 (expect_true (SvMAGIC (sv)->mg_type == type) \
256 SvMAGIC (cv) \ 430 ? SvMAGIC (sv) \
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 431 : mg_find (sv, type))
258 ? SvMAGIC (cv) \ 432
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 433#define CORO_MAGIC(sv, type) \
434 (expect_true (SvMAGIC (sv)) \
435 ? CORO_MAGIC_NN (sv, type) \
260 : 0 436 : 0)
437
438#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
439#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
440
441INLINE struct coro *
442SvSTATE_ (pTHX_ SV *coro)
443{
444 HV *stash;
445 MAGIC *mg;
446
447 if (SvROK (coro))
448 coro = SvRV (coro);
449
450 if (expect_false (SvTYPE (coro) != SVt_PVHV))
451 croak ("Coro::State object required");
452
453 stash = SvSTASH (coro);
454 if (expect_false (stash != coro_stash && stash != coro_state_stash))
455 {
456 /* very slow, but rare, check */
457 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
458 croak ("Coro::State object required");
459 }
460
461 mg = CORO_MAGIC_state (coro);
462 return (struct coro *)mg->mg_ptr;
463}
464
465#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
466
467/* faster than SvSTATE, but expects a coroutine hv */
468#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
469#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
261 470
262/* the next two functions merely cache the padlists */ 471/* the next two functions merely cache the padlists */
263static void 472static void
264get_padlist (CV *cv) 473get_padlist (pTHX_ CV *cv)
265{ 474{
266 MAGIC *mg = CORO_MAGIC (cv); 475 MAGIC *mg = CORO_MAGIC_cv (cv);
267 AV *av; 476 AV *av;
268 477
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 478 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 479 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 480 else
272 { 481 {
273#if PREFER_PERL_FUNCTIONS 482#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 483 /* this is probably cleaner? but also slower! */
484 /* in practise, it seems to be less stable */
275 CV *cp = Perl_cv_clone (cv); 485 CV *cp = Perl_cv_clone (aTHX_ cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 486 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 487 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 488 SvREFCNT_dec (cp);
279#else 489#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 490 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
281#endif 491#endif
282 } 492 }
283} 493}
284 494
285static void 495static void
286put_padlist (CV *cv) 496put_padlist (pTHX_ CV *cv)
287{ 497{
288 MAGIC *mg = CORO_MAGIC (cv); 498 MAGIC *mg = CORO_MAGIC_cv (cv);
289 AV *av; 499 AV *av;
290 500
291 if (!mg) 501 if (expect_false (!mg))
292 { 502 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV ();
297 }
298 503
299 av = (AV *)mg->mg_obj; 504 av = (AV *)mg->mg_obj;
300 505
301 if (AvFILLp (av) >= AvMAX (av)) 506 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 507 av_extend (av, AvMAX (av) + 1);
303 508
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 509 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 510}
306 511
307#define SB do { 512/** load & save, init *******************************************************/
308#define SE } while (0)
309 513
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311
312static void 514static void
313load_perl (Coro__State c) 515load_perl (pTHX_ Coro__State c)
314{ 516{
517 perl_slots *slot = c->slot;
518 c->slot = 0;
519
520 PL_mainstack = c->mainstack;
521
522 GvSV (PL_defgv) = slot->defsv;
523 GvAV (PL_defgv) = slot->defav;
524 GvSV (PL_errgv) = slot->errsv;
525 GvSV (irsgv) = slot->irsgv;
526
315#define VAR(name,type) PL_ ## name = c->name; 527 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 528 # include "state.h"
317#undef VAR 529 #undef VAR
318
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
321 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
322 if (c->irssv)
323 {
324 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
325 SvREFCNT_dec (c->irssv);
326 else
327 {
328 REPLACE_SV (PL_rs, c->irssv);
329 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330 sv_setsv (c->irssv_sv, PL_rs);
331 }
332 }
333 530
334 { 531 {
335 dSP; 532 dSP;
533
336 CV *cv; 534 CV *cv;
337 535
338 /* now do the ugly restore mess */ 536 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 537 while (expect_true (cv = (CV *)POPs))
340 { 538 {
341 put_padlist (cv); /* mark this padlist as available */ 539 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 540 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
344 } 542 }
345 543
346 PUTBACK; 544 PUTBACK;
347 } 545 }
348}
349 546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
549}
550
350static void 551static void
351save_perl (Coro__State c) 552save_perl (pTHX_ Coro__State c)
352{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
353 { 557 {
354 dSP; 558 dSP;
355 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
357 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
359 /* 563 /*
360 * the worst thing you can imagine happens first - we have to save 564 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 565 * (and reinitialize) all cv's in the whole callchain :(
362 */ 566 */
363 567
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 568 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 569 /* this loop was inspired by pp_caller */
367 for (;;) 570 for (;;)
368 { 571 {
369 while (cxix >= 0) 572 while (expect_true (cxix >= 0))
370 { 573 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 574 PERL_CONTEXT *cx = &ccstk[cxix--];
372 575
373 if (CxTYPE (cx) == CXt_SUB) 576 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 577 {
375 CV *cv = cx->blk_sub.cv; 578 CV *cv = cx->blk_sub.cv;
376 579
377 if (CvDEPTH (cv)) 580 if (expect_true (CvDEPTH (cv)))
378 { 581 {
379 EXTEND (SP, 3); 582 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 583 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 584 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 585 PUSHs ((SV *)cv);
383 586
384 CvDEPTH (cv) = 0; 587 CvDEPTH (cv) = 0;
385 get_padlist (cv); 588 get_padlist (aTHX_ cv);
386 } 589 }
387 } 590 }
388 } 591 }
389 592
390 if (top_si->si_type == PERLSI_MAIN) 593 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 594 break;
392 595
393 top_si = top_si->si_prev; 596 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 597 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 598 cxix = top_si->si_cxix;
396 } 599 }
397 600
398 PUTBACK; 601 PUTBACK;
399 } 602 }
400 603
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 604 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 605 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 606 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 607 if (SLOT_COUNT >= 2) CXINC;
608 if (SLOT_COUNT >= 3) CXINC;
609 {
610 int i;
611 for (i = 3; i < SLOT_COUNT; ++i)
612 CXINC;
613 }
614 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 615
616 c->mainstack = PL_mainstack;
617
618 {
619 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
620
621 slot->defav = GvAV (PL_defgv);
622 slot->defsv = DEFSV;
623 slot->errsv = ERRSV;
624 slot->irsgv = GvSV (irsgv);
625
406#define VAR(name,type)c->name = PL_ ## name; 626 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 627 # include "state.h"
408#undef VAR 628 #undef VAR
629 }
409} 630}
410 631
411/* 632/*
412 * allocate various perl stacks. This is an exact copy 633 * allocate various perl stacks. This is almost an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
416 */ 637 */
417#if PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
419#else 640#else
420static void 641static void
421coro_init_stacks () 642coro_init_stacks (pTHX)
422{ 643{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 644 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 645 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 646 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 647 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 648
428 PL_stack_base = AvARRAY(PL_curstack); 649 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 650 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 651 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 652
432 New(50,PL_tmps_stack,128,SV*); 653 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 654 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 655 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 656 PL_tmps_max = 32;
436 657
437 New(54,PL_markstack,32,I32); 658 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 659 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 660 PL_markstack_max = PL_markstack + 16;
440 661
441#ifdef SET_MARK_OFFSET 662#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 663 SET_MARK_OFFSET;
443#endif 664#endif
444 665
445 New(54,PL_scopestack,32,I32); 666 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 667 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 668 PL_scopestack_max = 8;
448 669
449 New(54,PL_savestack,64,ANY); 670 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 671 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 672 PL_savestack_max = 24;
452 673
453#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
454 New(54,PL_retstack,16,OP*); 675 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 676 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 677 PL_retstack_max = 4;
457#endif 678#endif
458} 679}
459#endif 680#endif
460 681
461/* 682/*
462 * destroy the stacks, the callchain etc... 683 * destroy the stacks, the callchain etc...
463 */ 684 */
464static void 685static void
465coro_destroy_stacks () 686coro_destruct_stacks (pTHX)
466{ 687{
467 if (!IN_DESTRUCT)
468 {
469 /* restore all saved variables and stuff */
470 LEAVE_SCOPE (0);
471 assert (PL_tmps_floor == -1);
472
473 /* free all temporaries */
474 FREETMPS;
475 assert (PL_tmps_ix == -1);
476
477 /* unwind all extra stacks */
478 POPSTACK_TO (PL_mainstack);
479
480 /* unwind main stack */
481 dounwind (-1);
482 }
483
484 while (PL_curstackinfo->si_next) 688 while (PL_curstackinfo->si_next)
485 PL_curstackinfo = PL_curstackinfo->si_next; 689 PL_curstackinfo = PL_curstackinfo->si_next;
486 690
487 while (PL_curstackinfo) 691 while (PL_curstackinfo)
488 { 692 {
… …
498 702
499 Safefree (PL_tmps_stack); 703 Safefree (PL_tmps_stack);
500 Safefree (PL_markstack); 704 Safefree (PL_markstack);
501 Safefree (PL_scopestack); 705 Safefree (PL_scopestack);
502 Safefree (PL_savestack); 706 Safefree (PL_savestack);
503#if !PERL_VERSION_ATLEAST (5,9,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
504 Safefree (PL_retstack); 708 Safefree (PL_retstack);
505#endif 709#endif
506} 710}
507 711
712#define CORO_RSS \
713 rss += sizeof (SYM (curstackinfo)); \
714 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
715 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
716 rss += SYM (tmps_max) * sizeof (SV *); \
717 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
718 rss += SYM (scopestack_max) * sizeof (I32); \
719 rss += SYM (savestack_max) * sizeof (ANY);
720
721static size_t
722coro_rss (pTHX_ struct coro *coro)
723{
724 size_t rss = sizeof (*coro);
725
726 if (coro->mainstack)
727 {
728 if (coro->flags & CF_RUNNING)
729 {
730 #define SYM(sym) PL_ ## sym
731 CORO_RSS;
732 #undef SYM
733 }
734 else
735 {
736 #define SYM(sym) coro->slot->sym
737 CORO_RSS;
738 #undef SYM
739 }
740 }
741
742 return rss;
743}
744
745/** coroutine stack handling ************************************************/
746
747static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
750
751/* apparently < 5.8.8 */
752#ifndef MgPV_nolen_const
753#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
754 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
755 (const char*)(mg)->mg_ptr)
756#endif
757
758/*
759 * This overrides the default magic get method of %SIG elements.
760 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
761 * and instead of tryign to save and restore the hash elements, we just provide
762 * readback here.
763 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
764 * not expecting this to actually change the hook. This is a potential problem
765 * when a schedule happens then, but we ignore this.
766 */
508static void 767static int
509setup_coro (struct coro *coro) 768coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = 0;
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
811}
812
813static int
814coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
815{
816 const char *s = MgPV_nolen_const (mg);
817
818 if (*s == '_')
819 {
820 SV **svp = 0;
821
822 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
823 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
824
825 if (svp)
826 {
827 SV *old = *svp;
828 *svp = newSVsv (sv);
829 SvREFCNT_dec (old);
830 return 0;
831 }
832 }
833
834 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
835}
836
837static void
838prepare_nop (pTHX_ struct coro_transfer_args *ta)
839{
840 /* kind of mega-hacky, but works */
841 ta->next = ta->prev = (struct coro *)ta;
842}
843
844static int
845slf_check_nop (pTHX_ struct CoroSLF *frame)
846{
847 return 0;
848}
849
850static int
851slf_check_repeat (pTHX_ struct CoroSLF *frame)
852{
853 return 1;
854}
855
856static UNOP coro_setup_op;
857
858static void NOINLINE /* noinline to keep it out of the transfer fast path */
859coro_setup (pTHX_ struct coro *coro)
510{ 860{
511 /* 861 /*
512 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
513 */ 863 */
514
515 coro_init_stacks (); 864 coro_init_stacks (aTHX);
516 865
866 PL_runops = RUNOPS_DEFAULT;
517 PL_curcop = &PL_compiling; 867 PL_curcop = &PL_compiling;
518 PL_in_eval = EVAL_NULL; 868 PL_in_eval = EVAL_NULL;
869 PL_comppad = 0;
519 PL_curpm = 0; 870 PL_curpm = 0;
871 PL_curpad = 0;
520 PL_localizing = 0; 872 PL_localizing = 0;
521 PL_dirty = 0; 873 PL_dirty = 0;
522 PL_restartop = 0; 874 PL_restartop = 0;
875#if PERL_VERSION_ATLEAST (5,10,0)
876 PL_parser = 0;
877#endif
878
879 /* recreate the die/warn hooks */
880 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
881 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
882
883 GvSV (PL_defgv) = newSV (0);
884 GvAV (PL_defgv) = coro->args; coro->args = 0;
885 GvSV (PL_errgv) = newSV (0);
886 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
887 PL_rs = newSVsv (GvSV (irsgv));
888 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
523 889
524 { 890 {
525 dSP; 891 dSP;
526 LOGOP myop; 892 UNOP myop;
527 893
528 SvREFCNT_dec (GvAV (PL_defgv));
529 GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531 Zero (&myop, 1, LOGOP); 894 Zero (&myop, 1, UNOP);
532 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
533 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
534 898
535 PUSHMARK (SP); 899 PUSHMARK (SP);
536 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 900 PUSHs ((SV *)coro->startcv);
537 PUTBACK; 901 PUTBACK;
538 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
539 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540 SPAGAIN;
541 } 904 }
542 905
543 ENTER; /* necessary e.g. for dounwind */ 906 /* this newly created coroutine might be run on an existing cctx which most
544} 907 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
908 */
909 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
910 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
545 911
912 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
913 coro_setup_op.op_next = PL_op;
914 coro_setup_op.op_type = OP_ENTERSUB;
915 coro_setup_op.op_ppaddr = pp_slf;
916 /* no flags etc. required, as an init function won't be called */
917
918 PL_op = (OP *)&coro_setup_op;
919
920 /* copy throw, in case it was set before coro_setup */
921 CORO_THROW = coro->except;
922}
923
546static void 924static void
925coro_destruct (pTHX_ struct coro *coro)
926{
927 if (!IN_DESTRUCT)
928 {
929 /* restore all saved variables and stuff */
930 LEAVE_SCOPE (0);
931 assert (PL_tmps_floor == -1);
932
933 /* free all temporaries */
934 FREETMPS;
935 assert (PL_tmps_ix == -1);
936
937 /* unwind all extra stacks */
938 POPSTACK_TO (PL_mainstack);
939
940 /* unwind main stack */
941 dounwind (-1);
942 }
943
944 SvREFCNT_dec (GvSV (PL_defgv));
945 SvREFCNT_dec (GvAV (PL_defgv));
946 SvREFCNT_dec (GvSV (PL_errgv));
947 SvREFCNT_dec (PL_defoutgv);
948 SvREFCNT_dec (PL_rs);
949 SvREFCNT_dec (GvSV (irsgv));
950
951 SvREFCNT_dec (PL_diehook);
952 SvREFCNT_dec (PL_warnhook);
953
954 SvREFCNT_dec (coro->saved_deffh);
955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
958
959 coro_destruct_stacks (aTHX);
960}
961
962INLINE void
547free_coro_mortal () 963free_coro_mortal (pTHX)
548{ 964{
549 if (coro_mortal) 965 if (expect_true (coro_mortal))
550 { 966 {
551 SvREFCNT_dec (coro_mortal); 967 SvREFCNT_dec (coro_mortal);
552 coro_mortal = 0; 968 coro_mortal = 0;
553 } 969 }
554} 970}
555 971
556/* inject a fake call to Coro::State::_cctx_init into the execution */ 972static int
973runops_trace (pTHX)
974{
975 COP *oldcop = 0;
976 int oldcxix = -2;
977
978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
979 {
980 PERL_ASYNC_CHECK ();
981
982 if (cctx_current->flags & CC_TRACE_ALL)
983 {
984 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
985 {
986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
987 SV **bot, **top;
988 AV *av = newAV (); /* return values */
989 SV **cb;
990 dSP;
991
992 GV *gv = CvGV (cx->blk_sub.cv);
993 SV *fullname = sv_2mortal (newSV (0));
994 if (isGV (gv))
995 gv_efullname3 (fullname, gv, 0);
996
997 bot = PL_stack_base + cx->blk_oldsp + 1;
998 top = cx->blk_gimme == G_ARRAY ? SP + 1
999 : cx->blk_gimme == G_SCALAR ? bot + 1
1000 : bot;
1001
1002 av_extend (av, top - bot);
1003 while (bot < top)
1004 av_push (av, SvREFCNT_inc_NN (*bot++));
1005
1006 PL_runops = RUNOPS_DEFAULT;
1007 ENTER;
1008 SAVETMPS;
1009 EXTEND (SP, 3);
1010 PUSHMARK (SP);
1011 PUSHs (&PL_sv_no);
1012 PUSHs (fullname);
1013 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1014 PUTBACK;
1015 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_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 if (oldcop != PL_curcop)
1024 {
1025 oldcop = PL_curcop;
1026
1027 if (PL_curcop != &PL_compiling)
1028 {
1029 SV **cb;
1030
1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1032 {
1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1034
1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1036 {
1037 dSP;
1038 GV *gv = CvGV (cx->blk_sub.cv);
1039 SV *fullname = sv_2mortal (newSV (0));
1040
1041 if (isGV (gv))
1042 gv_efullname3 (fullname, gv, 0);
1043
1044 PL_runops = RUNOPS_DEFAULT;
1045 ENTER;
1046 SAVETMPS;
1047 EXTEND (SP, 3);
1048 PUSHMARK (SP);
1049 PUSHs (&PL_sv_yes);
1050 PUSHs (fullname);
1051 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1052 PUTBACK;
1053 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1054 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1055 SPAGAIN;
1056 FREETMPS;
1057 LEAVE;
1058 PL_runops = runops_trace;
1059 }
1060
1061 oldcxix = cxstack_ix;
1062 }
1063
1064 if (cctx_current->flags & CC_TRACE_LINE)
1065 {
1066 dSP;
1067
1068 PL_runops = RUNOPS_DEFAULT;
1069 ENTER;
1070 SAVETMPS;
1071 EXTEND (SP, 3);
1072 PL_runops = RUNOPS_DEFAULT;
1073 PUSHMARK (SP);
1074 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1075 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1076 PUTBACK;
1077 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1078 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1079 SPAGAIN;
1080 FREETMPS;
1081 LEAVE;
1082 PL_runops = runops_trace;
1083 }
1084 }
1085 }
1086 }
1087 }
1088
1089 TAINT_NOT;
1090 return 0;
1091}
1092
1093static struct CoroSLF cctx_ssl_frame;
1094
1095static void
1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1097{
1098 ta->prev = 0;
1099}
1100
1101static int
1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1103{
1104 *frame = cctx_ssl_frame;
1105
1106 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1107}
1108
1109/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
557static void NOINLINE 1110static void NOINLINE
558prepare_cctx (coro_cctx *cctx) 1111cctx_prepare (pTHX)
559{ 1112{
560 dSP;
561 LOGOP myop;
562
563 Zero (&myop, 1, LOGOP);
564 myop.op_next = PL_op;
565 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566
567 PUSHMARK (SP);
568 EXTEND (SP, 2);
569 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
570 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
571 PUTBACK;
572 PL_op = (OP *)&myop;
573 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574 SPAGAIN;
575}
576
577static void
578coro_run (void *arg)
579{
580 /* coro_run is the alternative tail of transfer(), so unlock here. */
581 UNLOCK;
582
583 /*
584 * this is a _very_ stripped down perl interpreter ;)
585 */
586 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
587 1114
1115 if (cctx_current->flags & CC_TRACE)
1116 PL_runops = runops_trace;
1117
1118 /* we already must be executing an SLF op, there is no other valid way
1119 * that can lead to creation of a new cctx */
1120 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1121 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1122
1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1124 cctx_ssl_frame = slf_frame;
1125
1126 slf_frame.prepare = slf_prepare_set_stacklevel;
1127 slf_frame.check = slf_check_set_stacklevel;
1128}
1129
1130/* the tail of transfer: execute stuff we can only do after a transfer */
1131INLINE void
1132transfer_tail (pTHX)
1133{
1134 free_coro_mortal (aTHX);
1135}
1136
1137/*
1138 * this is a _very_ stripped down perl interpreter ;)
1139 */
1140static void
1141cctx_run (void *arg)
1142{
1143#ifdef USE_ITHREADS
1144# if CORO_PTHREAD
1145 PERL_SET_CONTEXT (coro_thx);
1146# endif
1147#endif
1148 {
1149 dTHX;
1150
1151 /* normally we would need to skip the entersub here */
1152 /* not doing so will re-execute it, which is exactly what we want */
1153 /* PL_nop = PL_nop->op_next */
1154
588 /* inject call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
589 prepare_cctx ((coro_cctx *)arg); 1156 cctx_prepare (aTHX);
590 1157
1158 /* cctx_run is the alternative tail of transfer() */
1159 transfer_tail (aTHX);
1160
591 /* somebody will hit me for both perl_run and PL_restartop */ 1161 /* somebody or something will hit me for both perl_run and PL_restartop */
592 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
593 perl_run (PL_curinterp); 1163 perl_run (PL_curinterp);
1164 /*
1165 * Unfortunately, there is no way to get at the return values of the
1166 * coro body here, as perl_run destroys these
1167 */
594 1168
595 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1169 /*
596 abort (); 1170 * If perl-run returns we assume exit() was being called or the coro
1171 * fell off the end, which seems to be the only valid (non-bug)
1172 * reason for perl_run to return. We try to exit by jumping to the
1173 * bootstrap-time "top" top_env, as we cannot restore the "main"
1174 * coroutine as Coro has no such concept
1175 */
1176 PL_top_env = main_top_env;
1177 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1178 }
597} 1179}
598 1180
599static coro_cctx * 1181static coro_cctx *
600cctx_new () 1182cctx_new ()
601{ 1183{
602 coro_cctx *cctx; 1184 coro_cctx *cctx;
603 1185
604 ++cctx_count; 1186 ++cctx_count;
605
606 Newz (0, cctx, 1, coro_cctx); 1187 New (0, cctx, 1, coro_cctx);
1188
1189 cctx->gen = cctx_gen;
1190 cctx->flags = 0;
1191 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1192
1193 return cctx;
1194}
1195
1196/* create a new cctx only suitable as source */
1197static coro_cctx *
1198cctx_new_empty ()
1199{
1200 coro_cctx *cctx = cctx_new ();
1201
1202 cctx->sptr = 0;
1203 coro_create (&cctx->cctx, 0, 0, 0, 0);
1204
1205 return cctx;
1206}
1207
1208/* create a new cctx suitable as destination/running a perl interpreter */
1209static coro_cctx *
1210cctx_new_run ()
1211{
1212 coro_cctx *cctx = cctx_new ();
1213 void *stack_start;
1214 size_t stack_size;
607 1215
608#if HAVE_MMAP 1216#if HAVE_MMAP
609
610 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1217 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611 /* mmap supposedly does allocate-on-write for us */ 1218 /* mmap supposedly does allocate-on-write for us */
612 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1219 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
613 1220
614 if (cctx->sptr == (void *)-1) 1221 if (cctx->sptr != (void *)-1)
1222 {
1223 #if CORO_STACKGUARD
1224 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1225 #endif
1226 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1227 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1228 cctx->flags |= CC_MAPPED;
615 { 1229 }
1230 else
1231#endif
1232 {
1233 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1234 New (0, cctx->sptr, cctx_stacksize, long);
1235
1236 if (!cctx->sptr)
1237 {
616 perror ("FATAL: unable to mmap stack for coroutine"); 1238 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
617 _exit (EXIT_FAILURE); 1239 _exit (EXIT_FAILURE);
618 } 1240 }
619 1241
620# if STACKGUARD 1242 stack_start = cctx->sptr;
621 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1243 stack_size = cctx->ssize;
622# endif
623
624#else
625
626 cctx->ssize = STACKSIZE * (long)sizeof (long);
627 New (0, cctx->sptr, STACKSIZE, long);
628
629 if (!cctx->sptr)
630 { 1244 }
631 perror ("FATAL: unable to malloc stack for coroutine");
632 _exit (EXIT_FAILURE);
633 }
634 1245
1246 #if CORO_USE_VALGRIND
1247 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
635#endif 1248 #endif
636 1249
637#if USE_VALGRIND 1250 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
638 cctx->valgrind_id = VALGRIND_STACK_REGISTER (
639 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640 cctx->ssize + (char *)cctx->sptr
641 );
642#endif
643
644 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
645 1251
646 return cctx; 1252 return cctx;
647} 1253}
648 1254
649static void 1255static void
650cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
651{ 1257{
652 if (!cctx) 1258 if (!cctx)
653 return; 1259 return;
654 1260
1261 assert (cctx != cctx_current);//D temporary
1262
655 --cctx_count; 1263 --cctx_count;
1264 coro_destroy (&cctx->cctx);
656 1265
657#if USE_VALGRIND 1266 /* coro_transfer creates new, empty cctx's */
1267 if (cctx->sptr)
1268 {
1269 #if CORO_USE_VALGRIND
658 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1270 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659#endif 1271 #endif
660 1272
661#if HAVE_MMAP 1273#if HAVE_MMAP
1274 if (cctx->flags & CC_MAPPED)
662 munmap (cctx->sptr, cctx->ssize); 1275 munmap (cctx->sptr, cctx->ssize);
663#else 1276 else
1277#endif
664 Safefree (cctx->sptr); 1278 Safefree (cctx->sptr);
665#endif 1279 }
666 1280
667 Safefree (cctx); 1281 Safefree (cctx);
668} 1282}
669 1283
1284/* wether this cctx should be destructed */
1285#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1286
670static coro_cctx * 1287static coro_cctx *
671cctx_get () 1288cctx_get (pTHX)
672{ 1289{
673 coro_cctx *cctx; 1290 while (expect_true (cctx_first))
674
675 if (cctx_first)
676 { 1291 {
677 cctx = cctx_first; 1292 coro_cctx *cctx = cctx_first;
678 cctx_first = cctx->next; 1293 cctx_first = cctx->next;
679 --cctx_idle; 1294 --cctx_idle;
680 } 1295
681 else 1296 if (expect_true (!CCTX_EXPIRED (cctx)))
682 { 1297 return cctx;
683 cctx = cctx_new (); 1298
684 PL_op = PL_op->op_next; 1299 cctx_destroy (cctx);
685 } 1300 }
686 1301
687 return cctx; 1302 return cctx_new_run ();
688} 1303}
689 1304
690static void 1305static void
691cctx_put (coro_cctx *cctx) 1306cctx_put (coro_cctx *cctx)
692{ 1307{
1308 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1309
693 /* free another cctx if overlimit */ 1310 /* free another cctx if overlimit */
694 if (cctx_idle >= MAX_IDLE_CCTX) 1311 if (expect_false (cctx_idle >= cctx_max_idle))
695 { 1312 {
696 coro_cctx *first = cctx_first; 1313 coro_cctx *first = cctx_first;
697 cctx_first = first->next; 1314 cctx_first = first->next;
698 --cctx_idle; 1315 --cctx_idle;
699 1316
700 assert (!first->inuse);
701 cctx_destroy (first); 1317 cctx_destroy (first);
702 } 1318 }
703 1319
704 ++cctx_idle; 1320 ++cctx_idle;
705 cctx->next = cctx_first; 1321 cctx->next = cctx_first;
706 cctx_first = cctx; 1322 cctx_first = cctx;
707} 1323}
708 1324
709/* never call directly, always through the coro_state_transfer global variable */ 1325/** coroutine switching *****************************************************/
710static void NOINLINE 1326
1327static void
711transfer (struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1332 if (expect_true (prev != next))
1333 {
1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1335 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1336
1337 if (expect_false (next->flags & CF_RUNNING))
1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1339
1340 if (expect_false (next->flags & CF_DESTROYED))
1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1342
1343#if !PERL_VERSION_ATLEAST (5,10,0)
1344 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1346#endif
1347 }
1348}
1349
1350/* always use the TRANSFER macro */
1351static void NOINLINE /* noinline so we have a fixed stackframe */
1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
712{ 1353{
713 dSTACKLEVEL; 1354 dSTACKLEVEL;
714 1355
715 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
716 if (!next) 1357 if (expect_false (!prev))
717 { 1358 {
718 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1359 cctx_current->idle_sp = STACKLEVEL;
719 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
720 }
721 else if (prev != next)
722 { 1361 }
1362 else if (expect_true (prev != next))
1363 {
723 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
724 1365
725 if (prev->flags & CF_NEW) 1366 if (expect_false (prev->flags & CF_NEW))
726 { 1367 {
727 /* create a new empty context */ 1368 /* create a new empty/source context */
728 Newz (0, prev->cctx, 1, coro_cctx);
729 prev->cctx->inuse = 1;
730 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
731 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
732 } 1371 }
733 1372
734 /*TODO: must not croak here */
735 if (!prev->flags & CF_RUNNING)
736 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
737
738 if (next->flags & CF_RUNNING)
739 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
740
741 if (next->flags & CF_DESTROYED)
742 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
743
744 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
745 next->flags |= CF_RUNNING; 1374 next->flags |= CF_RUNNING;
746 1375
747 LOCK; 1376 /* first get rid of the old state */
1377 save_perl (aTHX_ prev);
748 1378
749 if (next->flags & CF_NEW) 1379 if (expect_false (next->flags & CF_NEW))
750 { 1380 {
751 /* need to start coroutine */ 1381 /* need to start coroutine */
752 next->flags &= ~CF_NEW; 1382 next->flags &= ~CF_NEW;
753 /* first get rid of the old state */
754 save_perl (prev);
755 /* setup coroutine call */ 1383 /* setup coroutine call */
756 setup_coro (next); 1384 coro_setup (aTHX_ next);
757 /* need a new stack */
758 assert (!next->cctx);
759 } 1385 }
760 else 1386 else
1387 load_perl (aTHX_ next);
1388
1389 assert (!prev->cctx);//D temporary
1390
1391 /* possibly untie and reuse the cctx */
1392 if (expect_true (
1393 cctx_current->idle_sp == STACKLEVEL
1394 && !(cctx_current->flags & CC_TRACE)
1395 && !force_cctx
1396 ))
761 { 1397 {
762 /* coroutine already started */ 1398 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
763 save_perl (prev); 1399 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
764 load_perl (next); 1400
1401 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1402 /* without this the next cctx_get might destroy the running cctx while still in use */
1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1404 if (expect_true (!next->cctx))
1405 next->cctx = cctx_get (aTHX);
1406
1407 cctx_put (cctx_current);
765 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
766 1411
767 prev__cctx = prev->cctx; 1412 ++next->usecount;
768 1413
769 /* possibly "free" the cctx */ 1414 cctx_prev = cctx_current;
770 if (prev__cctx->idle_sp == STACKLEVEL) 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1416
1417 next->cctx = 0;
1418
1419 if (expect_false (cctx_prev != cctx_current))
771 { 1420 {
772 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1421 cctx_prev->top_env = PL_top_env;
773 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1422 PL_top_env = cctx_current->top_env;
774 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
775 prev->cctx = 0;
776
777 cctx_put (prev__cctx);
778 prev__cctx->inuse = 0;
779 } 1424 }
780 1425
781 if (!next->cctx) 1426 transfer_tail (aTHX);
782 {
783 next->cctx = cctx_get ();
784 assert (!next->cctx->inuse);
785 next->cctx->inuse = 1;
786 }
787
788 if (prev__cctx != next->cctx)
789 {
790 prev__cctx->top_env = PL_top_env;
791 PL_top_env = next->cctx->top_env;
792 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793 }
794
795 free_coro_mortal ();
796 UNLOCK;
797 } 1427 }
798} 1428}
799 1429
800struct transfer_args 1430#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
801{
802 struct coro *prev, *next;
803};
804
805#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1431#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1432
1433/** high level stuff ********************************************************/
806 1434
807static int 1435static int
808coro_state_destroy (struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
809{ 1437{
810 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
811 return 0; 1439 return 0;
812 1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1443
813 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1445
1446 if (coro->flags & CF_READY)
1447 {
1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1449 /* alternative: look through all ready queues and remove the coro */
1450 --coro_nready;
1451 }
1452 else
1453 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
814 1454
815 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
816 { 1456 {
817 assert (!(coro->flags & CF_RUNNING));
818
819 struct coro temp; 1457 struct coro temp;
820 Zero (&temp, 1, struct coro);
821 temp.save = CORO_SAVE_ALL;
822 1458
823 if (coro->flags & CF_RUNNING) 1459 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
824 croak ("FATAL: tried to destroy currently running coroutine");
825 1460
826 save_perl (&temp); 1461 save_perl (aTHX_ &temp);
827 load_perl (coro); 1462 load_perl (aTHX_ coro);
828 1463
829 coro_destroy_stacks (); 1464 coro_destruct (aTHX_ coro);
830 1465
831 load_perl (&temp); /* this will get rid of defsv etc.. */ 1466 load_perl (aTHX_ &temp);
832 1467
833 coro->mainstack = 0; 1468 coro->slot = 0;
834 } 1469 }
835 1470
836 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
837 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1475
1476 if (coro->next) coro->next->prev = coro->prev;
1477 if (coro->prev) coro->prev->next = coro->next;
1478 if (coro == coro_first) coro_first = coro->next;
838 1479
839 return 1; 1480 return 1;
840} 1481}
841 1482
842static int 1483static int
843coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1484coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844{ 1485{
845 struct coro *coro = (struct coro *)mg->mg_ptr; 1486 struct coro *coro = (struct coro *)mg->mg_ptr;
846 mg->mg_ptr = 0; 1487 mg->mg_ptr = 0;
847 1488
1489 coro->hv = 0;
1490
848 if (--coro->refcnt < 0) 1491 if (--coro->refcnt < 0)
849 { 1492 {
850 coro_state_destroy (coro); 1493 coro_state_destroy (aTHX_ coro);
851 Safefree (coro); 1494 Safefree (coro);
852 } 1495 }
853 1496
854 return 0; 1497 return 0;
855} 1498}
… …
873#else 1516#else
874# define MGf_DUP 0 1517# define MGf_DUP 0
875#endif 1518#endif
876}; 1519};
877 1520
878static struct coro *
879SvSTATE (SV *coro)
880{
881 HV *stash;
882 MAGIC *mg;
883
884 if (SvROK (coro))
885 coro = SvRV (coro);
886
887 stash = SvSTASH (coro);
888 if (stash != coro_stash && stash != coro_state_stash)
889 {
890 /* very slow, but rare, check */
891 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892 croak ("Coro::State object required");
893 }
894
895 mg = SvMAGIC (coro);
896 assert (mg->mg_type == PERL_MAGIC_ext);
897 return (struct coro *)mg->mg_ptr;
898}
899
900static void 1521static void
901prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1522prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
902{ 1523{
903 ta->prev = SvSTATE (prev_sv); 1524 ta->prev = SvSTATE (prev_sv);
904 ta->next = SvSTATE (next_sv); 1525 ta->next = SvSTATE (next_sv);
1526 TRANSFER_CHECK (*ta);
905} 1527}
906 1528
907static void 1529static void
908api_transfer (SV *prev_sv, SV *next_sv) 1530api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
909{ 1531{
910 struct transfer_args ta; 1532 struct coro_transfer_args ta;
911 1533
912 prepare_transfer (&ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913 TRANSFER (ta); 1535 TRANSFER (ta, 1);
1536}
1537
1538/*****************************************************************************/
1539/* gensub: simple closure generation utility */
1540
1541#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1542
1543/* create a closure from XS, returns a code reference */
1544/* the arg can be accessed via GENSUB_ARG from the callback */
1545/* the callback must use dXSARGS/XSRETURN */
1546static SV *
1547gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1548{
1549 CV *cv = (CV *)newSV (0);
1550
1551 sv_upgrade ((SV *)cv, SVt_PVCV);
1552
1553 CvANON_on (cv);
1554 CvISXSUB_on (cv);
1555 CvXSUB (cv) = xsub;
1556 GENSUB_ARG = arg;
1557
1558 return newRV_noinc ((SV *)cv);
1559}
1560
1561/** Coro ********************************************************************/
1562
1563INLINE void
1564coro_enq (pTHX_ struct coro *coro)
1565{
1566 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1567}
1568
1569INLINE SV *
1570coro_deq (pTHX)
1571{
1572 int prio;
1573
1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1575 if (AvFILLp (coro_ready [prio]) >= 0)
1576 return av_shift (coro_ready [prio]);
1577
1578 return 0;
914} 1579}
915 1580
916static int 1581static int
917api_save (SV *coro_sv, int new_save)
918{
919 struct coro *coro = SvSTATE (coro_sv);
920 int old_save = coro->save;
921
922 if (new_save >= 0)
923 coro->save = new_save;
924
925 return old_save;
926}
927
928/** Coro ********************************************************************/
929
930#define PRIO_MAX 3
931#define PRIO_HIGH 1
932#define PRIO_NORMAL 0
933#define PRIO_LOW -1
934#define PRIO_IDLE -3
935#define PRIO_MIN -4
936
937/* for Coro.pm */
938static SV *coro_current;
939static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940static int coro_nready;
941
942static void
943coro_enq (SV *coro_sv)
944{
945 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946 coro_nready++;
947}
948
949static SV *
950coro_deq (int min_prio)
951{
952 int prio = PRIO_MAX - PRIO_MIN;
953
954 min_prio -= PRIO_MIN;
955 if (min_prio < 0)
956 min_prio = 0;
957
958 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
959 if (AvFILLp (coro_ready [prio]) >= 0)
960 {
961 coro_nready--;
962 return av_shift (coro_ready [prio]);
963 }
964
965 return 0;
966}
967
968static int
969api_ready (SV *coro_sv) 1582api_ready (pTHX_ SV *coro_sv)
970{ 1583{
971 struct coro *coro; 1584 struct coro *coro;
972 1585 SV *sv_hook;
973 if (SvROK (coro_sv)) 1586 void (*xs_hook)(void);
974 coro_sv = SvRV (coro_sv);
975 1587
976 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
977 1589
978 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
979 return 0; 1591 return 0;
980 1592
981 coro->flags |= CF_READY; 1593 coro->flags |= CF_READY;
982 1594
983 LOCK; 1595 sv_hook = coro_nready ? 0 : coro_readyhook;
984 coro_enq (SvREFCNT_inc (coro_sv)); 1596 xs_hook = coro_nready ? 0 : coroapi.readyhook;
985 UNLOCK; 1597
1598 coro_enq (aTHX_ coro);
1599 ++coro_nready;
1600
1601 if (sv_hook)
1602 {
1603 dSP;
1604
1605 ENTER;
1606 SAVETMPS;
1607
1608 PUSHMARK (SP);
1609 PUTBACK;
1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1611
1612 FREETMPS;
1613 LEAVE;
1614 }
1615
1616 if (xs_hook)
1617 xs_hook ();
986 1618
987 return 1; 1619 return 1;
988} 1620}
989 1621
990static int 1622static int
991api_is_ready (SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
992{ 1624{
993 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
994} 1626}
995 1627
1628/* expects to own a reference to next->hv */
1629INLINE void
1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1631{
1632 SV *prev_sv = SvRV (coro_current);
1633
1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1637 TRANSFER_CHECK (*ta);
1638
1639 SvRV_set (coro_current, (SV *)next->hv);
1640
1641 free_coro_mortal (aTHX);
1642 coro_mortal = prev_sv;
1643}
1644
996static void 1645static void
997prepare_schedule (struct transfer_args *ta) 1646prepare_schedule (pTHX_ struct coro_transfer_args *ta)
998{ 1647{
999 SV *prev_sv, *next_sv;
1000
1001 for (;;) 1648 for (;;)
1002 { 1649 {
1003 LOCK;
1004 next_sv = coro_deq (PRIO_MIN); 1650 SV *next_sv = coro_deq (aTHX);
1005 UNLOCK;
1006 1651
1652 if (expect_true (next_sv))
1653 {
1654 struct coro *next = SvSTATE_hv (next_sv);
1655
1656 /* cannot transfer to destroyed coros, skip and look for next */
1657 if (expect_false (next->flags & CF_DESTROYED))
1658 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1659 else
1660 {
1661 next->flags &= ~CF_READY;
1662 --coro_nready;
1663
1664 prepare_schedule_to (aTHX_ ta, next);
1665 break;
1666 }
1667 }
1668 else
1669 {
1007 /* nothing to schedule: call the idle handler */ 1670 /* nothing to schedule: call the idle handler */
1008 if (!next_sv) 1671 if (SvROK (sv_idle)
1672 && SvOBJECT (SvRV (sv_idle)))
1673 {
1674 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1675 api_ready (SvRV (sv_idle));
1676 --coro_nready;
1677 }
1678 else
1679 {
1680 dSP;
1681
1682 ENTER;
1683 SAVETMPS;
1684
1685 PUSHMARK (SP);
1686 PUTBACK;
1687 call_sv (sv_idle, G_VOID | G_DISCARD);
1688
1689 FREETMPS;
1690 LEAVE;
1691 }
1692 }
1693 }
1694}
1695
1696INLINE void
1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1698{
1699 api_ready (aTHX_ coro_current);
1700 prepare_schedule (aTHX_ ta);
1701}
1702
1703INLINE void
1704prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1705{
1706 SV *prev = SvRV (coro_current);
1707
1708 if (coro_nready)
1709 {
1710 prepare_schedule (aTHX_ ta);
1711 api_ready (aTHX_ prev);
1712 }
1713 else
1714 prepare_nop (aTHX_ ta);
1715}
1716
1717static void
1718api_schedule (pTHX)
1719{
1720 struct coro_transfer_args ta;
1721
1722 prepare_schedule (aTHX_ &ta);
1723 TRANSFER (ta, 1);
1724}
1725
1726static void
1727api_schedule_to (pTHX_ SV *coro_sv)
1728{
1729 struct coro_transfer_args ta;
1730 struct coro *next = SvSTATE (coro_sv);
1731
1732 SvREFCNT_inc_NN (coro_sv);
1733 prepare_schedule_to (aTHX_ &ta, next);
1734}
1735
1736static int
1737api_cede (pTHX)
1738{
1739 struct coro_transfer_args ta;
1740
1741 prepare_cede (aTHX_ &ta);
1742
1743 if (expect_true (ta.prev != ta.next))
1744 {
1745 TRANSFER (ta, 1);
1746 return 1;
1747 }
1748 else
1749 return 0;
1750}
1751
1752static int
1753api_cede_notself (pTHX)
1754{
1755 if (coro_nready)
1756 {
1757 struct coro_transfer_args ta;
1758
1759 prepare_cede_notself (aTHX_ &ta);
1760 TRANSFER (ta, 1);
1761 return 1;
1762 }
1763 else
1764 return 0;
1765}
1766
1767static void
1768api_trace (pTHX_ SV *coro_sv, int flags)
1769{
1770 struct coro *coro = SvSTATE (coro_sv);
1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1775 if (flags & CC_TRACE)
1776 {
1777 if (!coro->cctx)
1778 coro->cctx = cctx_new_run ();
1779 else if (!(coro->cctx->flags & CC_TRACE))
1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1781
1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1783 }
1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1785 {
1786 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1787
1788 if (coro->flags & CF_RUNNING)
1789 PL_runops = RUNOPS_DEFAULT;
1790 else
1791 coro->slot->runops = RUNOPS_DEFAULT;
1792 }
1793}
1794
1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro)
1797{
1798 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1799 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1800
1801 if (on_destroyp)
1802 {
1803 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1804
1805 while (AvFILLp (on_destroy) >= 0)
1806 {
1807 dSP; /* don't disturb outer sp */
1808 SV *cb = av_pop (on_destroy);
1809
1810 PUSHMARK (SP);
1811
1812 if (statusp)
1813 {
1814 int i;
1815 AV *status = (AV *)SvRV (*statusp);
1816 EXTEND (SP, AvFILLp (status) + 1);
1817
1818 for (i = 0; i <= AvFILLp (status); ++i)
1819 PUSHs (AvARRAY (status)[i]);
1820 }
1821
1822 PUTBACK;
1823 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1824 }
1825 }
1826}
1827
1828static void
1829slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1830{
1831 int i;
1832 HV *hv = (HV *)SvRV (coro_current);
1833 AV *av = newAV ();
1834
1835 av_extend (av, items - 1);
1836 for (i = 0; i < items; ++i)
1837 av_push (av, SvREFCNT_inc_NN (arg [i]));
1838
1839 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1840
1841 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1842 api_ready (aTHX_ sv_manager);
1843
1844 frame->prepare = prepare_schedule;
1845 frame->check = slf_check_repeat;
1846}
1847
1848/*****************************************************************************/
1849/* async pool handler */
1850
1851static int
1852slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1853{
1854 HV *hv = (HV *)SvRV (coro_current);
1855 struct coro *coro = (struct coro *)frame->data;
1856
1857 if (!coro->invoke_cb)
1858 return 1; /* loop till we have invoke */
1859 else
1860 {
1861 hv_store (hv, "desc", sizeof ("desc") - 1,
1862 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1863
1864 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1865
1866 {
1867 dSP;
1868 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1869 PUTBACK;
1870 }
1871
1872 SvREFCNT_dec (GvAV (PL_defgv));
1873 GvAV (PL_defgv) = coro->invoke_av;
1874 coro->invoke_av = 0;
1875
1876 return 0;
1877 }
1878}
1879
1880static void
1881slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = SvSTATE_hv ((SV *)hv);
1885
1886 if (expect_true (coro->saved_deffh))
1887 {
1888 /* subsequent iteration */
1889 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1890 coro->saved_deffh = 0;
1891
1892 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1893 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1894 {
1895 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1896 coro->invoke_av = newAV ();
1897
1898 frame->prepare = prepare_nop;
1899 }
1900 else
1901 {
1902 av_clear (GvAV (PL_defgv));
1903 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1904
1905 coro->prio = 0;
1906
1907 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908 api_trace (aTHX_ coro_current, 0);
1909
1910 frame->prepare = prepare_schedule;
1911 av_push (av_async_pool, SvREFCNT_inc (hv));
1912 }
1913 }
1914 else
1915 {
1916 /* first iteration, simply fall through */
1917 frame->prepare = prepare_nop;
1918 }
1919
1920 frame->check = slf_check_pool_handler;
1921 frame->data = (void *)coro;
1922}
1923
1924/*****************************************************************************/
1925/* rouse callback */
1926
1927#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1928
1929static void
1930coro_rouse_callback (pTHX_ CV *cv)
1931{
1932 dXSARGS;
1933 SV *data = (SV *)GENSUB_ARG;
1934
1935 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1936 {
1937 /* first call, set args */
1938 AV *av = newAV ();
1939 SV *coro = SvRV (data);
1940
1941 SvRV_set (data, (SV *)av);
1942 api_ready (aTHX_ coro);
1943 SvREFCNT_dec (coro);
1944
1945 /* better take a full copy of the arguments */
1946 while (items--)
1947 av_store (av, items, newSVsv (ST (items)));
1948 }
1949
1950 XSRETURN_EMPTY;
1951}
1952
1953static int
1954slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1955{
1956 SV *data = (SV *)frame->data;
1957
1958 if (CORO_THROW)
1959 return 0;
1960
1961 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1962 return 1;
1963
1964 /* now push all results on the stack */
1965 {
1966 dSP;
1967 AV *av = (AV *)SvRV (data);
1968 int i;
1969
1970 EXTEND (SP, AvFILLp (av) + 1);
1971 for (i = 0; i <= AvFILLp (av); ++i)
1972 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1973
1974 /* we have stolen the elements, so ste length to zero and free */
1975 AvFILLp (av) = -1;
1976 av_undef (av);
1977
1978 PUTBACK;
1979 }
1980
1981 return 0;
1982}
1983
1984static void
1985slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 SV *cb;
1988
1989 if (items)
1990 cb = arg [0];
1991 else
1992 {
1993 struct coro *coro = SvSTATE_current;
1994
1995 if (!coro->rouse_cb)
1996 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1997
1998 cb = sv_2mortal (coro->rouse_cb);
1999 coro->rouse_cb = 0;
2000 }
2001
2002 if (!SvROK (cb)
2003 || SvTYPE (SvRV (cb)) != SVt_PVCV
2004 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2005 croak ("Coro::rouse_wait called with illegal callback argument,");
2006
2007 {
2008 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2009 SV *data = (SV *)GENSUB_ARG;
2010
2011 frame->data = (void *)data;
2012 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2013 frame->check = slf_check_rouse_wait;
2014 }
2015}
2016
2017static SV *
2018coro_new_rouse_cb (pTHX)
2019{
2020 HV *hv = (HV *)SvRV (coro_current);
2021 struct coro *coro = SvSTATE_hv (hv);
2022 SV *data = newRV_inc ((SV *)hv);
2023 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2024
2025 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2026 SvREFCNT_dec (data); /* magicext increases the refcount */
2027
2028 SvREFCNT_dec (coro->rouse_cb);
2029 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2030
2031 return cb;
2032}
2033
2034/*****************************************************************************/
2035/* schedule-like-function opcode (SLF) */
2036
2037static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2038static const CV *slf_cv;
2039static SV **slf_argv;
2040static int slf_argc, slf_arga; /* count, allocated */
2041static I32 slf_ax; /* top of stack, for restore */
2042
2043/* this restores the stack in the case we patched the entersub, to */
2044/* recreate the stack frame as perl will on following calls */
2045/* since entersub cleared the stack */
2046static OP *
2047pp_restore (pTHX)
2048{
2049 int i;
2050 SV **SP = PL_stack_base + slf_ax;
2051
2052 PUSHMARK (SP);
2053
2054 EXTEND (SP, slf_argc + 1);
2055
2056 for (i = 0; i < slf_argc; ++i)
2057 PUSHs (sv_2mortal (slf_argv [i]));
2058
2059 PUSHs ((SV *)CvGV (slf_cv));
2060
2061 RETURNOP (slf_restore.op_first);
2062}
2063
2064static void
2065slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2066{
2067 SV **arg = (SV **)slf_frame.data;
2068
2069 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2070}
2071
2072static void
2073slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 if (items != 2)
2076 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2077
2078 frame->prepare = slf_prepare_transfer;
2079 frame->check = slf_check_nop;
2080 frame->data = (void *)arg; /* let's hope it will stay valid */
2081}
2082
2083static void
2084slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 frame->prepare = prepare_schedule;
2087 frame->check = slf_check_nop;
2088}
2089
2090static void
2091slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2092{
2093 struct coro *next = (struct coro *)slf_frame.data;
2094
2095 SvREFCNT_inc_NN (next->hv);
2096 prepare_schedule_to (aTHX_ ta, next);
2097}
2098
2099static void
2100slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 if (!items)
2103 croak ("Coro::schedule_to expects a coroutine argument, caught");
2104
2105 frame->data = (void *)SvSTATE (arg [0]);
2106 frame->prepare = slf_prepare_schedule_to;
2107 frame->check = slf_check_nop;
2108}
2109
2110static void
2111slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 api_ready (aTHX_ SvRV (coro_current));
2114
2115 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2116}
2117
2118static void
2119slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2120{
2121 frame->prepare = prepare_cede;
2122 frame->check = slf_check_nop;
2123}
2124
2125static void
2126slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2127{
2128 frame->prepare = prepare_cede_notself;
2129 frame->check = slf_check_nop;
2130}
2131
2132/*
2133 * these not obviously related functions are all rolled into one
2134 * function to increase chances that they all will call transfer with the same
2135 * stack offset
2136 * SLF stands for "schedule-like-function".
2137 */
2138static OP *
2139pp_slf (pTHX)
2140{
2141 I32 checkmark; /* mark SP to see how many elements check has pushed */
2142
2143 /* set up the slf frame, unless it has already been set-up */
2144 /* the latter happens when a new coro has been started */
2145 /* or when a new cctx was attached to an existing coroutine */
2146 if (expect_true (!slf_frame.prepare))
2147 {
2148 /* first iteration */
2149 dSP;
2150 SV **arg = PL_stack_base + TOPMARK + 1;
2151 int items = SP - arg; /* args without function object */
2152 SV *gv = *sp;
2153
2154 /* do a quick consistency check on the "function" object, and if it isn't */
2155 /* for us, divert to the real entersub */
2156 if (SvTYPE (gv) != SVt_PVGV
2157 || !GvCV (gv)
2158 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2159 return PL_ppaddr[OP_ENTERSUB](aTHX);
2160
2161 if (!(PL_op->op_flags & OPf_STACKED))
2162 {
2163 /* ampersand-form of call, use @_ instead of stack */
2164 AV *av = GvAV (PL_defgv);
2165 arg = AvARRAY (av);
2166 items = AvFILLp (av) + 1;
2167 }
2168
2169 /* now call the init function, which needs to set up slf_frame */
2170 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2171 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2172
2173 /* pop args */
2174 SP = PL_stack_base + POPMARK;
2175
2176 PUTBACK;
2177 }
2178
2179 /* now that we have a slf_frame, interpret it! */
2180 /* we use a callback system not to make the code needlessly */
2181 /* complicated, but so we can run multiple perl coros from one cctx */
2182
2183 do
2184 {
2185 struct coro_transfer_args ta;
2186
2187 slf_frame.prepare (aTHX_ &ta);
2188 TRANSFER (ta, 0);
2189
2190 checkmark = PL_stack_sp - PL_stack_base;
2191 }
2192 while (slf_frame.check (aTHX_ &slf_frame));
2193
2194 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2195
2196 /* exception handling */
2197 if (expect_false (CORO_THROW))
2198 {
2199 SV *exception = sv_2mortal (CORO_THROW);
2200
2201 CORO_THROW = 0;
2202 sv_setsv (ERRSV, exception);
2203 croak (0);
2204 }
2205
2206 /* return value handling - mostly like entersub */
2207 /* make sure we put something on the stack in scalar context */
2208 if (GIMME_V == G_SCALAR)
2209 {
2210 dSP;
2211 SV **bot = PL_stack_base + checkmark;
2212
2213 if (sp == bot) /* too few, push undef */
2214 bot [1] = &PL_sv_undef;
2215 else if (sp != bot + 1) /* too many, take last one */
2216 bot [1] = *sp;
2217
2218 SP = bot + 1;
2219
2220 PUTBACK;
2221 }
2222
2223 return NORMAL;
2224}
2225
2226static void
2227api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2228{
2229 int i;
2230 SV **arg = PL_stack_base + ax;
2231 int items = PL_stack_sp - arg + 1;
2232
2233 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2234
2235 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2236 && PL_op->op_ppaddr != pp_slf)
2237 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2238
2239 CvFLAGS (cv) |= CVf_SLF;
2240 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2241 slf_cv = cv;
2242
2243 /* we patch the op, and then re-run the whole call */
2244 /* we have to put the same argument on the stack for this to work */
2245 /* and this will be done by pp_restore */
2246 slf_restore.op_next = (OP *)&slf_restore;
2247 slf_restore.op_type = OP_CUSTOM;
2248 slf_restore.op_ppaddr = pp_restore;
2249 slf_restore.op_first = PL_op;
2250
2251 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2252
2253 if (PL_op->op_flags & OPf_STACKED)
2254 {
2255 if (items > slf_arga)
2256 {
2257 slf_arga = items;
2258 free (slf_argv);
2259 slf_argv = malloc (slf_arga * sizeof (SV *));
2260 }
2261
2262 slf_argc = items;
2263
2264 for (i = 0; i < items; ++i)
2265 slf_argv [i] = SvREFCNT_inc (arg [i]);
2266 }
2267 else
2268 slf_argc = 0;
2269
2270 PL_op->op_ppaddr = pp_slf;
2271 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2272
2273 PL_op = (OP *)&slf_restore;
2274}
2275
2276/*****************************************************************************/
2277/* PerlIO::cede */
2278
2279typedef struct
2280{
2281 PerlIOBuf base;
2282 NV next, every;
2283} PerlIOCede;
2284
2285static IV
2286PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2287{
2288 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2289
2290 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2291 self->next = nvtime () + self->every;
2292
2293 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2294}
2295
2296static SV *
2297PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2298{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300
2301 return newSVnv (self->every);
2302}
2303
2304static IV
2305PerlIOCede_flush (pTHX_ PerlIO *f)
2306{
2307 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2308 double now = nvtime ();
2309
2310 if (now >= self->next)
2311 {
2312 api_cede (aTHX);
2313 self->next = now + self->every;
2314 }
2315
2316 return PerlIOBuf_flush (aTHX_ f);
2317}
2318
2319static PerlIO_funcs PerlIO_cede =
2320{
2321 sizeof(PerlIO_funcs),
2322 "cede",
2323 sizeof(PerlIOCede),
2324 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2325 PerlIOCede_pushed,
2326 PerlIOBuf_popped,
2327 PerlIOBuf_open,
2328 PerlIOBase_binmode,
2329 PerlIOCede_getarg,
2330 PerlIOBase_fileno,
2331 PerlIOBuf_dup,
2332 PerlIOBuf_read,
2333 PerlIOBuf_unread,
2334 PerlIOBuf_write,
2335 PerlIOBuf_seek,
2336 PerlIOBuf_tell,
2337 PerlIOBuf_close,
2338 PerlIOCede_flush,
2339 PerlIOBuf_fill,
2340 PerlIOBase_eof,
2341 PerlIOBase_error,
2342 PerlIOBase_clearerr,
2343 PerlIOBase_setlinebuf,
2344 PerlIOBuf_get_base,
2345 PerlIOBuf_bufsiz,
2346 PerlIOBuf_get_ptr,
2347 PerlIOBuf_get_cnt,
2348 PerlIOBuf_set_ptrcnt,
2349};
2350
2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
2353
2354static SV *
2355coro_waitarray_new (pTHX_ int count)
2356{
2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2358 AV *av = newAV ();
2359 SV **ary;
2360
2361 /* unfortunately, building manually saves memory */
2362 Newx (ary, 2, SV *);
2363 AvALLOC (av) = ary;
2364 /*AvARRAY (av) = ary;*/
2365 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2366 AvMAX (av) = 1;
2367 AvFILLp (av) = 0;
2368 ary [0] = newSViv (count);
2369
2370 return newRV_noinc ((SV *)av);
2371}
2372
2373/* semaphore */
2374
2375static void
2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2377{
2378 SV *count_sv = AvARRAY (av)[0];
2379 IV count = SvIVX (count_sv);
2380
2381 count += adjust;
2382 SvIVX (count_sv) = count;
2383
2384 /* now wake up as many waiters as are expected to lock */
2385 while (count > 0 && AvFILLp (av) > 0)
2386 {
2387 SV *cb;
2388
2389 /* swap first two elements so we can shift a waiter */
2390 AvARRAY (av)[0] = AvARRAY (av)[1];
2391 AvARRAY (av)[1] = count_sv;
2392 cb = av_shift (av);
2393
2394 if (SvOBJECT (cb))
2395 {
2396 api_ready (aTHX_ cb);
2397 --count;
2398 }
2399 else if (SvTYPE (cb) == SVt_PVCV)
1009 { 2400 {
1010 dSP; 2401 dSP;
1011
1012 ENTER;
1013 SAVETMPS;
1014
1015 PUSHMARK (SP); 2402 PUSHMARK (SP);
2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1016 PUTBACK; 2404 PUTBACK;
1017 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1018
1019 FREETMPS;
1020 LEAVE;
1021 continue;
1022 } 2406 }
1023 2407
1024 ta->next = SvSTATE (next_sv); 2408 SvREFCNT_dec (cb);
2409 }
2410}
1025 2411
1026 /* cannot transfer to destroyed coros, skip and look for next */ 2412static void
1027 if (ta->next->flags & CF_DESTROYED) 2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2414{
2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2417}
2418
2419static int
2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2421{
2422 AV *av = (AV *)frame->data;
2423 SV *count_sv = AvARRAY (av)[0];
2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2428 else if (SvIVX (count_sv) > 0)
2429 {
2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2433 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2434 else
2435 coro_semaphore_adjust (aTHX_ av, 0);
2436
2437 return 0;
2438 }
2439 else
2440 {
2441 int i;
2442 /* if we were woken up but can't down, we look through the whole */
2443 /* waiters list and only add us if we aren't in there already */
2444 /* this avoids some degenerate memory usage cases */
2445
2446 for (i = 1; i <= AvFILLp (av); ++i)
2447 if (AvARRAY (av)[i] == SvRV (coro_current))
2448 return 1;
2449
2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2451 return 1;
2452 }
2453}
2454
2455static int
2456slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2457{
2458 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2459}
2460
2461static int
2462slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2463{
2464 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2465}
2466
2467static void
2468slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2469{
2470 AV *av = (AV *)SvRV (arg [0]);
2471
2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2473 {
2474 frame->data = (void *)av;
2475 frame->prepare = prepare_nop;
2476 }
2477 else
2478 {
2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2480
2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2482 frame->prepare = prepare_schedule;
2483
2484 /* to avoid race conditions when a woken-up coro gets terminated */
2485 /* we arrange for a temporary on_destroy that calls adjust (0) */
2486 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2487 }
2488}
2489
2490static void
2491slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2492{
2493 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2494 frame->check = slf_check_semaphore_down;
2495}
2496
2497static void
2498slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2499{
2500 if (items >= 2)
2501 {
2502 /* callback form */
2503 AV *av = (AV *)SvRV (arg [0]);
2504 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2505
2506 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2507
2508 if (SvIVX (AvARRAY (av)[0]) > 0)
2509 coro_semaphore_adjust (aTHX_ av, 0);
2510
2511 frame->prepare = prepare_nop;
2512 frame->check = slf_check_nop;
2513 }
2514 else
2515 {
2516 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2517 frame->check = slf_check_semaphore_wait;
2518 }
2519}
2520
2521/* signal */
2522
2523static void
2524coro_signal_wake (pTHX_ AV *av, int count)
2525{
2526 SvIVX (AvARRAY (av)[0]) = 0;
2527
2528 /* now signal count waiters */
2529 while (count > 0 && AvFILLp (av) > 0)
2530 {
2531 SV *cb;
2532
2533 /* swap first two elements so we can shift a waiter */
2534 cb = AvARRAY (av)[0];
2535 AvARRAY (av)[0] = AvARRAY (av)[1];
2536 AvARRAY (av)[1] = cb;
2537
2538 cb = av_shift (av);
2539
2540 api_ready (aTHX_ cb);
2541 sv_setiv (cb, 0); /* signal waiter */
2542 SvREFCNT_dec (cb);
2543
2544 --count;
2545 }
2546}
2547
2548static int
2549slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2550{
2551 /* if we are about to throw, also stop waiting */
2552 return SvROK ((SV *)frame->data) && !CORO_THROW;
2553}
2554
2555static void
2556slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 AV *av = (AV *)SvRV (arg [0]);
2559
2560 if (SvIVX (AvARRAY (av)[0]))
2561 {
2562 SvIVX (AvARRAY (av)[0]) = 0;
2563 frame->prepare = prepare_nop;
2564 frame->check = slf_check_nop;
2565 }
2566 else
2567 {
2568 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2569
2570 av_push (av, waiter);
2571
2572 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2573 frame->prepare = prepare_schedule;
2574 frame->check = slf_check_signal_wait;
2575 }
2576}
2577
2578/*****************************************************************************/
2579/* Coro::AIO */
2580
2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2582
2583/* helper storage struct */
2584struct io_state
2585{
2586 int errorno;
2587 I32 laststype; /* U16 in 5.10.0 */
2588 int laststatval;
2589 Stat_t statcache;
2590};
2591
2592static void
2593coro_aio_callback (pTHX_ CV *cv)
2594{
2595 dXSARGS;
2596 AV *state = (AV *)GENSUB_ARG;
2597 SV *coro = av_pop (state);
2598 SV *data_sv = newSV (sizeof (struct io_state));
2599
2600 av_extend (state, items - 1);
2601
2602 sv_upgrade (data_sv, SVt_PV);
2603 SvCUR_set (data_sv, sizeof (struct io_state));
2604 SvPOK_only (data_sv);
2605
2606 {
2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2608
2609 data->errorno = errno;
2610 data->laststype = PL_laststype;
2611 data->laststatval = PL_laststatval;
2612 data->statcache = PL_statcache;
2613 }
2614
2615 /* now build the result vector out of all the parameters and the data_sv */
2616 {
2617 int i;
2618
2619 for (i = 0; i < items; ++i)
2620 av_push (state, SvREFCNT_inc_NN (ST (i)));
2621 }
2622
2623 av_push (state, data_sv);
2624
2625 api_ready (aTHX_ coro);
2626 SvREFCNT_dec (coro);
2627 SvREFCNT_dec ((AV *)state);
2628}
2629
2630static int
2631slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2632{
2633 AV *state = (AV *)frame->data;
2634
2635 /* if we are about to throw, return early */
2636 /* this does not cancel the aio request, but at least */
2637 /* it quickly returns */
2638 if (CORO_THROW)
2639 return 0;
2640
2641 /* one element that is an RV? repeat! */
2642 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2643 return 1;
2644
2645 /* restore status */
2646 {
2647 SV *data_sv = av_pop (state);
2648 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2649
2650 errno = data->errorno;
2651 PL_laststype = data->laststype;
2652 PL_laststatval = data->laststatval;
2653 PL_statcache = data->statcache;
2654
2655 SvREFCNT_dec (data_sv);
2656 }
2657
2658 /* push result values */
2659 {
2660 dSP;
2661 int i;
2662
2663 EXTEND (SP, AvFILLp (state) + 1);
2664 for (i = 0; i <= AvFILLp (state); ++i)
2665 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2666
2667 PUTBACK;
2668 }
2669
2670 return 0;
2671}
2672
2673static void
2674slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2675{
2676 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2677 SV *coro_hv = SvRV (coro_current);
2678 struct coro *coro = SvSTATE_hv (coro_hv);
2679
2680 /* put our coroutine id on the state arg */
2681 av_push (state, SvREFCNT_inc_NN (coro_hv));
2682
2683 /* first see whether we have a non-zero priority and set it as AIO prio */
2684 if (coro->prio)
2685 {
2686 dSP;
2687
2688 static SV *prio_cv;
2689 static SV *prio_sv;
2690
2691 if (expect_false (!prio_cv))
1028 { 2692 {
1029 SvREFCNT_dec (next_sv); 2693 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
1030 continue; 2694 prio_sv = newSViv (0);
1031 } 2695 }
1032 2696
1033 break; 2697 PUSHMARK (SP);
1034 } 2698 sv_setiv (prio_sv, coro->prio);
2699 XPUSHs (prio_sv);
1035 2700
1036 /* free this only after the transfer */ 2701 PUTBACK;
1037 prev_sv = SvRV (coro_current); 2702 call_sv (prio_cv, G_VOID | G_DISCARD);
1038 SvRV_set (coro_current, next_sv);
1039 ta->prev = SvSTATE (prev_sv);
1040
1041 assert (ta->next->flags & CF_READY);
1042 ta->next->flags &= ~CF_READY;
1043
1044 LOCK;
1045 free_coro_mortal ();
1046 coro_mortal = prev_sv;
1047 UNLOCK;
1048}
1049
1050static void
1051prepare_cede (struct transfer_args *ta)
1052{
1053 api_ready (coro_current);
1054 prepare_schedule (ta);
1055}
1056
1057static int
1058prepare_cede_notself (struct transfer_args *ta)
1059{
1060 if (coro_nready)
1061 { 2703 }
1062 SV *prev = SvRV (coro_current); 2704
1063 prepare_schedule (ta); 2705 /* now call the original request */
1064 api_ready (prev); 2706 {
1065 return 1; 2707 dSP;
2708 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2709 int i;
2710
2711 PUSHMARK (SP);
2712
2713 /* first push all args to the stack */
2714 EXTEND (SP, items + 1);
2715
2716 for (i = 0; i < items; ++i)
2717 PUSHs (arg [i]);
2718
2719 /* now push the callback closure */
2720 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2721
2722 /* now call the AIO function - we assume our request is uncancelable */
2723 PUTBACK;
2724 call_sv ((SV *)req, G_VOID | G_DISCARD);
1066 } 2725 }
1067 else
1068 return 0;
1069}
1070 2726
1071static void 2727 /* now that the requets is going, we loop toll we have a result */
1072api_schedule (void) 2728 frame->data = (void *)state;
1073{ 2729 frame->prepare = prepare_schedule;
1074 struct transfer_args ta; 2730 frame->check = slf_check_aio_req;
1075
1076 prepare_schedule (&ta);
1077 TRANSFER (ta);
1078} 2731}
1079 2732
1080static int 2733static void
1081api_cede (void) 2734coro_aio_req_xs (pTHX_ CV *cv)
1082{ 2735{
1083 struct transfer_args ta; 2736 dXSARGS;
1084 2737
1085 prepare_cede (&ta); 2738 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1086 2739
1087 if (ta.prev != ta.next) 2740 XSRETURN_EMPTY;
1088 {
1089 TRANSFER (ta);
1090 return 1;
1091 }
1092 else
1093 return 0;
1094} 2741}
1095 2742
1096static int 2743/*****************************************************************************/
1097api_cede_notself (void)
1098{
1099 struct transfer_args ta;
1100 2744
1101 if (prepare_cede_notself (&ta)) 2745#if CORO_CLONE
1102 { 2746# include "clone.c"
1103 TRANSFER (ta); 2747#endif
1104 return 1;
1105 }
1106 else
1107 return 0;
1108}
1109 2748
1110MODULE = Coro::State PACKAGE = Coro::State 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111 2750
1112PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
1113 2752
1114BOOT: 2753BOOT:
1115{ 2754{
1116#ifdef USE_ITHREADS 2755#ifdef USE_ITHREADS
1117 MUTEX_INIT (&coro_mutex); 2756# if CORO_PTHREAD
2757 coro_thx = PERL_GET_CONTEXT;
2758# endif
1118#endif 2759#endif
1119 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
1120 2761
2762 cctx_current = cctx_new_empty ();
2763
2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2766
2767 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2768 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2769 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2770
2771 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2772 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2773 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2774
1121 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2775 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122 2776
2777 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2778 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2779 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1124 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1127 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2780 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128 2781
1129 main_mainstack = PL_mainstack; 2782 main_mainstack = PL_mainstack;
2783 main_top_env = PL_top_env;
1130 2784
2785 while (main_top_env->je_prev)
2786 main_top_env = main_top_env->je_prev;
2787
2788 {
2789 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2790
2791 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2792 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2793
2794 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2795 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2796 }
2797
1131 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
2799 coroapi.rev = CORO_API_REVISION;
2800
1132 coroapi.transfer = api_transfer; 2801 coroapi.transfer = api_transfer;
2802
2803 coroapi.sv_state = SvSTATE_;
2804 coroapi.execute_slf = api_execute_slf;
2805 coroapi.prepare_nop = prepare_nop;
2806 coroapi.prepare_schedule = prepare_schedule;
2807 coroapi.prepare_cede = prepare_cede;
2808 coroapi.prepare_cede_notself = prepare_cede_notself;
2809
2810 {
2811 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2812
2813 if (!svp) croak ("Time::HiRes is required");
2814 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2815
2816 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2817 }
1133 2818
1134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1135} 2820}
1136 2821
1137SV * 2822SV *
1138new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
1139 CODE: 2826 CODE:
1140{ 2827{
1141 struct coro *coro; 2828 struct coro *coro;
2829 MAGIC *mg;
1142 HV *hv; 2830 HV *hv;
2831 CV *cb;
1143 int i; 2832 int i;
1144 2833
2834 if (items > 1)
2835 {
2836 cb = coro_sv_2cv (aTHX_ ST (1));
2837
2838 if (!ix)
2839 {
2840 if (CvISXSUB (cb))
2841 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2842
2843 if (!CvROOT (cb))
2844 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2845 }
2846 }
2847
1145 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
1146 coro->args = newAV (); 2849 coro->args = newAV ();
1147 coro->save = CORO_SAVE_ALL;
1148 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
1149 2851
2852 if (coro_first) coro_first->prev = coro;
2853 coro->next = coro_first;
2854 coro_first = coro;
2855
1150 hv = newHV (); 2856 coro->hv = hv = newHV ();
1151 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2857 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2858 mg->mg_flags |= MGf_DUP;
1152 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153 2860
2861 if (items > 1)
2862 {
2863 av_extend (coro->args, items - 1 + ix - 1);
2864
2865 if (ix)
2866 {
2867 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2868 cb = cv_coro_run;
2869 }
2870
2871 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2872
1154 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
1155 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
1156} 2876}
1157 OUTPUT: 2877 OUTPUT:
1158 RETVAL 2878 RETVAL
1159 2879
1160int 2880void
1161save (SV *coro, int new_save = -1) 2881transfer (...)
2882 PROTOTYPE: $$
1162 CODE: 2883 CODE:
1163 RETVAL = api_save (coro, new_save); 2884 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1164 OUTPUT:
1165 RETVAL
1166
1167void
1168_set_stacklevel (...)
1169 ALIAS:
1170 Coro::State::transfer = 1
1171 Coro::schedule = 2
1172 Coro::cede = 3
1173 Coro::cede_notself = 4
1174 CODE:
1175{
1176 struct transfer_args ta;
1177
1178 switch (ix)
1179 {
1180 case 0:
1181 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1182 ta.next = 0;
1183 break;
1184
1185 case 1:
1186 if (items != 2)
1187 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1188
1189 prepare_transfer (&ta, ST (0), ST (1));
1190 break;
1191
1192 case 2:
1193 prepare_schedule (&ta);
1194 break;
1195
1196 case 3:
1197 prepare_cede (&ta);
1198 break;
1199
1200 case 4:
1201 if (!prepare_cede_notself (&ta))
1202 XSRETURN_EMPTY;
1203
1204 break;
1205 }
1206
1207 BARRIER;
1208 TRANSFER (ta);
1209
1210 if (GIMME_V != G_VOID && ta.next != ta.prev)
1211 XSRETURN_YES;
1212}
1213 2885
1214bool 2886bool
1215_destroy (SV *coro_sv) 2887_destroy (SV *coro_sv)
1216 CODE: 2888 CODE:
1217 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 2889 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1218 OUTPUT: 2890 OUTPUT:
1219 RETVAL 2891 RETVAL
1220 2892
1221void 2893void
1222_exit (code) 2894_exit (int code)
1223 int code
1224 PROTOTYPE: $ 2895 PROTOTYPE: $
1225 CODE: 2896 CODE:
1226 _exit (code); 2897 _exit (code);
1227 2898
2899SV *
2900clone (Coro::State coro)
2901 CODE:
2902{
2903#if CORO_CLONE
2904 struct coro *ncoro = coro_clone (coro);
2905 MAGIC *mg;
2906 /* TODO: too much duplication */
2907 ncoro->hv = newHV ();
2908 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2909 mg->mg_flags |= MGf_DUP;
2910 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2911#else
2912 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2913#endif
2914}
2915 OUTPUT:
2916 RETVAL
2917
2918int
2919cctx_stacksize (int new_stacksize = 0)
2920 PROTOTYPE: ;$
2921 CODE:
2922 RETVAL = cctx_stacksize;
2923 if (new_stacksize)
2924 {
2925 cctx_stacksize = new_stacksize;
2926 ++cctx_gen;
2927 }
2928 OUTPUT:
2929 RETVAL
2930
2931int
2932cctx_max_idle (int max_idle = 0)
2933 PROTOTYPE: ;$
2934 CODE:
2935 RETVAL = cctx_max_idle;
2936 if (max_idle > 1)
2937 cctx_max_idle = max_idle;
2938 OUTPUT:
2939 RETVAL
2940
1228int 2941int
1229cctx_count () 2942cctx_count ()
2943 PROTOTYPE:
1230 CODE: 2944 CODE:
1231 RETVAL = cctx_count; 2945 RETVAL = cctx_count;
1232 OUTPUT: 2946 OUTPUT:
1233 RETVAL 2947 RETVAL
1234 2948
1235int 2949int
1236cctx_idle () 2950cctx_idle ()
2951 PROTOTYPE:
1237 CODE: 2952 CODE:
1238 RETVAL = cctx_idle; 2953 RETVAL = cctx_idle;
1239 OUTPUT: 2954 OUTPUT:
1240 RETVAL 2955 RETVAL
1241 2956
2957void
2958list ()
2959 PROTOTYPE:
2960 PPCODE:
2961{
2962 struct coro *coro;
2963 for (coro = coro_first; coro; coro = coro->next)
2964 if (coro->hv)
2965 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2966}
2967
2968void
2969call (Coro::State coro, SV *coderef)
2970 ALIAS:
2971 eval = 1
2972 CODE:
2973{
2974 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2975 {
2976 struct coro temp;
2977
2978 if (!(coro->flags & CF_RUNNING))
2979 {
2980 PUTBACK;
2981 save_perl (aTHX_ &temp);
2982 load_perl (aTHX_ coro);
2983 }
2984
2985 {
2986 dSP;
2987 ENTER;
2988 SAVETMPS;
2989 PUTBACK;
2990 PUSHSTACK;
2991 PUSHMARK (SP);
2992
2993 if (ix)
2994 eval_sv (coderef, 0);
2995 else
2996 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2997
2998 POPSTACK;
2999 SPAGAIN;
3000 FREETMPS;
3001 LEAVE;
3002 PUTBACK;
3003 }
3004
3005 if (!(coro->flags & CF_RUNNING))
3006 {
3007 save_perl (aTHX_ coro);
3008 load_perl (aTHX_ &temp);
3009 SPAGAIN;
3010 }
3011 }
3012}
3013
3014SV *
3015is_ready (Coro::State coro)
3016 PROTOTYPE: $
3017 ALIAS:
3018 is_ready = CF_READY
3019 is_running = CF_RUNNING
3020 is_new = CF_NEW
3021 is_destroyed = CF_DESTROYED
3022 CODE:
3023 RETVAL = boolSV (coro->flags & ix);
3024 OUTPUT:
3025 RETVAL
3026
3027void
3028throw (Coro::State self, SV *throw = &PL_sv_undef)
3029 PROTOTYPE: $;$
3030 CODE:
3031{
3032 struct coro *current = SvSTATE_current;
3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
3034 SvREFCNT_dec (*throwp);
3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3036}
3037
3038void
3039api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3040 PROTOTYPE: $;$
3041 C_ARGS: aTHX_ coro, flags
3042
3043SV *
3044has_cctx (Coro::State coro)
3045 PROTOTYPE: $
3046 CODE:
3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3049 OUTPUT:
3050 RETVAL
3051
3052int
3053is_traced (Coro::State coro)
3054 PROTOTYPE: $
3055 CODE:
3056 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3057 OUTPUT:
3058 RETVAL
3059
3060UV
3061rss (Coro::State coro)
3062 PROTOTYPE: $
3063 ALIAS:
3064 usecount = 1
3065 CODE:
3066 switch (ix)
3067 {
3068 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3069 case 1: RETVAL = coro->usecount; break;
3070 }
3071 OUTPUT:
3072 RETVAL
3073
3074void
3075force_cctx ()
3076 PROTOTYPE:
3077 CODE:
3078 cctx_current->idle_sp = 0;
3079
3080void
3081swap_defsv (Coro::State self)
3082 PROTOTYPE: $
3083 ALIAS:
3084 swap_defav = 1
3085 CODE:
3086 if (!self->slot)
3087 croak ("cannot swap state with coroutine that has no saved state,");
3088 else
3089 {
3090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3092
3093 SV *tmp = *src; *src = *dst; *dst = tmp;
3094 }
3095
3096
1242MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
1243 3098
1244BOOT: 3099BOOT:
1245{ 3100{
1246 int i; 3101 int i;
1247 3102
3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3108 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3109 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3110 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3111 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3112
3113 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3114 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3115 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3116 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3117
1248 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
1249 3119
1250 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1251 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1252 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3122 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1253 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3123 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1254 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3124 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1255 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3125 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1256 3126
1257 coro_current = get_sv ("Coro::current", FALSE);
1258 SvREADONLY_on (coro_current);
1259
1260 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3127 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1261 coro_ready[i] = newAV (); 3128 coro_ready[i] = newAV ();
1262 3129
1263 { 3130 {
1264 SV *sv = perl_get_sv("Coro::API", 1); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1265 3132
1266 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
1267 coroapi.save = api_save; 3134 coroapi.schedule_to = api_schedule_to;
1268 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
1269 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
1270 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
1271 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
1272 coroapi.nready = &coro_nready; 3139 coroapi.nready = coro_nready;
1273 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
1274 3141
1275 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
1276 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
1277 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
1278 } 3145 }
1279} 3146}
3147
3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3152
3153void
3154schedule (...)
3155 CODE:
3156 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3157
3158void
3159schedule_to (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3162
3163void
3164cede_to (...)
3165 CODE:
3166 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3167
3168void
3169cede (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
3172
3173void
3174cede_notself (...)
3175 CODE:
3176 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3177
3178void
3179_cancel (Coro::State self)
3180 CODE:
3181 coro_state_destroy (aTHX_ self);
3182 coro_call_on_destroy (aTHX_ self);
1280 3183
1281void 3184void
1282_set_current (SV *current) 3185_set_current (SV *current)
1283 PROTOTYPE: $ 3186 PROTOTYPE: $
1284 CODE: 3187 CODE:
1285 SvREFCNT_dec (SvRV (coro_current)); 3188 SvREFCNT_dec (SvRV (coro_current));
1286 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3189 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3190
3191void
3192_set_readyhook (SV *hook)
3193 PROTOTYPE: $
3194 CODE:
3195 SvREFCNT_dec (coro_readyhook);
3196 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1287 3197
1288int 3198int
1289prio (Coro::State coro, int newprio = 0) 3199prio (Coro::State coro, int newprio = 0)
3200 PROTOTYPE: $;$
1290 ALIAS: 3201 ALIAS:
1291 nice = 1 3202 nice = 1
1292 CODE: 3203 CODE:
1293{ 3204{
1294 RETVAL = coro->prio; 3205 RETVAL = coro->prio;
… …
1309 3220
1310SV * 3221SV *
1311ready (SV *self) 3222ready (SV *self)
1312 PROTOTYPE: $ 3223 PROTOTYPE: $
1313 CODE: 3224 CODE:
1314 RETVAL = boolSV (api_ready (self)); 3225 RETVAL = boolSV (api_ready (aTHX_ self));
1315 OUTPUT:
1316 RETVAL
1317
1318SV *
1319is_ready (SV *self)
1320 PROTOTYPE: $
1321 CODE:
1322 RETVAL = boolSV (api_is_ready (self));
1323 OUTPUT: 3226 OUTPUT:
1324 RETVAL 3227 RETVAL
1325 3228
1326int 3229int
1327nready (...) 3230nready (...)
… …
1329 CODE: 3232 CODE:
1330 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
1331 OUTPUT: 3234 OUTPUT:
1332 RETVAL 3235 RETVAL
1333 3236
1334MODULE = Coro::State PACKAGE = Coro::AIO 3237void
3238_pool_handler (...)
3239 CODE:
3240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3241
3242void
3243async_pool (SV *cv, ...)
3244 PROTOTYPE: &@
3245 PPCODE:
3246{
3247 HV *hv = (HV *)av_pop (av_async_pool);
3248 AV *av = newAV ();
3249 SV *cb = ST (0);
3250 int i;
3251
3252 av_extend (av, items - 2);
3253 for (i = 1; i < items; ++i)
3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
3255
3256 if ((SV *)hv == &PL_sv_undef)
3257 {
3258 PUSHMARK (SP);
3259 EXTEND (SP, 2);
3260 PUSHs (sv_Coro);
3261 PUSHs ((SV *)cv_pool_handler);
3262 PUTBACK;
3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3267 }
3268
3269 {
3270 struct coro *coro = SvSTATE_hv (hv);
3271
3272 assert (!coro->invoke_cb);
3273 assert (!coro->invoke_av);
3274 coro->invoke_cb = SvREFCNT_inc (cb);
3275 coro->invoke_av = av;
3276 }
3277
3278 api_ready (aTHX_ (SV *)hv);
3279
3280 if (GIMME_V != G_VOID)
3281 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3282 else
3283 SvREFCNT_dec (hv);
3284}
1335 3285
1336SV * 3286SV *
1337_get_state () 3287rouse_cb ()
3288 PROTOTYPE:
1338 CODE: 3289 CODE:
1339{ 3290 RETVAL = coro_new_rouse_cb (aTHX);
1340 struct io_state *data;
1341
1342 RETVAL = newSV (sizeof (struct io_state));
1343 data = (struct io_state *)SvPVX (RETVAL);
1344 SvCUR_set (RETVAL, sizeof (struct io_state));
1345 SvPOK_only (RETVAL);
1346
1347 data->errorno = errno;
1348 data->laststype = PL_laststype;
1349 data->laststatval = PL_laststatval;
1350 data->statcache = PL_statcache;
1351}
1352 OUTPUT: 3291 OUTPUT:
1353 RETVAL 3292 RETVAL
1354 3293
1355void 3294void
1356_set_state (char *data_) 3295rouse_wait (...)
1357 PROTOTYPE: $ 3296 PROTOTYPE: ;$
3297 PPCODE:
3298 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3299
3300
3301MODULE = Coro::State PACKAGE = PerlIO::cede
3302
3303BOOT:
3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3305
3306
3307MODULE = Coro::State PACKAGE = Coro::Semaphore
3308
3309SV *
3310new (SV *klass, SV *count = 0)
1358 CODE: 3311 CODE:
1359{ 3312 RETVAL = sv_bless (
1360 struct io_state *data = (void *)data_; 3313 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3314 GvSTASH (CvGV (cv))
3315 );
3316 OUTPUT:
3317 RETVAL
1361 3318
1362 errno = data->errorno; 3319# helper for Coro::Channel
1363 PL_laststype = data->laststype; 3320SV *
1364 PL_laststatval = data->laststatval; 3321_alloc (int count)
1365 PL_statcache = data->statcache; 3322 CODE:
1366} 3323 RETVAL = coro_waitarray_new (aTHX_ count);
3324 OUTPUT:
3325 RETVAL
1367 3326
3327SV *
3328count (SV *self)
3329 CODE:
3330 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3331 OUTPUT:
3332 RETVAL
3333
3334void
3335up (SV *self, int adjust = 1)
3336 ALIAS:
3337 adjust = 1
3338 CODE:
3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3340
3341void
3342down (...)
3343 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3350
3351void
3352try (SV *self)
3353 PPCODE:
3354{
3355 AV *av = (AV *)SvRV (self);
3356 SV *count_sv = AvARRAY (av)[0];
3357 IV count = SvIVX (count_sv);
3358
3359 if (count > 0)
3360 {
3361 --count;
3362 SvIVX (count_sv) = count;
3363 XSRETURN_YES;
3364 }
3365 else
3366 XSRETURN_NO;
3367}
3368
3369void
3370waiters (SV *self)
3371 PPCODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
3375
3376 if (GIMME_V == G_SCALAR)
3377 XPUSHs (sv_2mortal (newSViv (wcount)));
3378 else
3379 {
3380 int i;
3381 EXTEND (SP, wcount);
3382 for (i = 1; i <= wcount; ++i)
3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3384 }
3385}
3386
3387MODULE = Coro::State PACKAGE = Coro::Signal
3388
3389SV *
3390new (SV *klass)
3391 CODE:
3392 RETVAL = sv_bless (
3393 coro_waitarray_new (aTHX_ 0),
3394 GvSTASH (CvGV (cv))
3395 );
3396 OUTPUT:
3397 RETVAL
3398
3399void
3400wait (...)
3401 CODE:
3402 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3403
3404void
3405broadcast (SV *self)
3406 CODE:
3407{
3408 AV *av = (AV *)SvRV (self);
3409 coro_signal_wake (aTHX_ av, AvFILLp (av));
3410}
3411
3412void
3413send (SV *self)
3414 CODE:
3415{
3416 AV *av = (AV *)SvRV (self);
3417
3418 if (AvFILLp (av))
3419 coro_signal_wake (aTHX_ av, 1);
3420 else
3421 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3422}
3423
3424IV
3425awaited (SV *self)
3426 CODE:
3427 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3428 OUTPUT:
3429 RETVAL
3430
3431
3432MODULE = Coro::State PACKAGE = Coro::AnyEvent
3433
3434BOOT:
3435 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3436
3437void
3438_schedule (...)
3439 CODE:
3440{
3441 static int incede;
3442
3443 api_cede_notself (aTHX);
3444
3445 ++incede;
3446 while (coro_nready >= incede && api_cede (aTHX))
3447 ;
3448
3449 sv_setsv (sv_activity, &PL_sv_undef);
3450 if (coro_nready >= incede)
3451 {
3452 PUSHMARK (SP);
3453 PUTBACK;
3454 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3455 }
3456
3457 --incede;
3458}
3459
3460
3461MODULE = Coro::State PACKAGE = Coro::AIO
3462
3463void
3464_register (char *target, char *proto, SV *req)
3465 CODE:
3466{
3467 CV *req_cv = coro_sv_2cv (aTHX_ req);
3468 /* newXSproto doesn't return the CV on 5.8 */
3469 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3470 sv_setpv ((SV *)slf_cv, proto);
3471 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3472}
3473

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