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Comparing Coro/Coro/State.xs (file contents):
Revision 1.196 by root, Sat Oct 6 01:11:01 2007 UTC vs.
Revision 1.336 by root, Thu Dec 4 17:29:40 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#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
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 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
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif
87
88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89# undef CORO_STACKGUARD 116# undef CORO_STACKGUARD
90#endif 117#endif
91 118
92#ifndef CORO_STACKGUARD 119#ifndef CORO_STACKGUARD
… …
98# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
99#endif 126#endif
100 127
101/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
102 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
103#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
104#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
105 137
106#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
107 139
108#if __GNUC__ >= 3 140#if __GNUC__ >= 3
109# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
110# define BARRIER __asm__ __volatile__ ("" : : : "memory")
111# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
112#else 144#else
113# define attribute(x) 145# define attribute(x)
114# define BARRIER
115# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
116#endif 148#endif
117 149
118#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
119#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
120 152
121#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
122 154
123#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
124 157
125#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
126static perl_mutex coro_mutex; 159# if CORO_PTHREAD
127# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
128# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
129#else
130# define LOCK (void)0
131# define UNLOCK (void)0
132#endif 161# endif
162#endif
133 163
134/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
135struct io_state
136{
137 int errorno;
138 I32 laststype;
139 int laststatval;
140 Stat_t statcache;
141};
142 165
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;
143static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
144static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
145static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
146static JMPENV *main_top_env; 174static JMPENV *main_top_env;
147static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
148static 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 */
149 181
150static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
151static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
152 187
153/* async_pool helper stuff */ 188/* async_pool helper stuff */
154static SV *sv_pool_rss; 189static SV *sv_pool_rss;
155static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
156static AV *av_async_pool; 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;
157 199
158static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
159static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
160 202
161enum { 203enum {
… …
166 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
168}; 210};
169 211
170/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
171typedef struct coro_cctx { 213typedef struct coro_cctx
214{
172 struct coro_cctx *next; 215 struct coro_cctx *next;
173 216
174 /* the stack */ 217 /* the stack */
175 void *sptr; 218 void *sptr;
176 size_t ssize; 219 size_t ssize;
… …
179 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
180 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 */
181 JMPENV *top_env; 224 JMPENV *top_env;
182 coro_context cctx; 225 coro_context cctx;
183 226
227 U32 gen;
184#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
185 int valgrind_id; 229 int valgrind_id;
186#endif 230#endif
187 unsigned char flags; 231 unsigned char flags;
188} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
189 237
190enum { 238enum {
191 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
192 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
193 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
194 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
195}; 243};
196 244
197/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
198struct coro { 246typedef struct
199 /* the c coroutine allocated to this perl coroutine, if any */ 247{
200 coro_cctx *cctx; 248 SV *defsv;
201 249 AV *defav;
202 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
203 AV *args; 251 SV *irsgv;
204 int refcnt; 252 HV *hinthv;
205 int flags; /* CF_ flags */
206
207 /* optionally saved, might be zero */
208 AV *defav; /* @_ */
209 SV *defsv; /* $_ */
210 SV *errsv; /* $@ */
211 SV *deffh; /* default filehandle */
212 SV *irssv; /* $/ */
213 SV *irssv_sv; /* real $/ cache */
214
215#define VAR(name,type) type name; 253#define VAR(name,type) type name;
216# include "state.h" 254# include "state.h"
217#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
218 276
219 /* statistics */ 277 /* statistics */
220 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
221 279
222 /* coro process data */ 280 /* coro process data */
223 int prio; 281 int prio;
224 SV *throw; 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
225 284
226 /* async_pool */ 285 /* async_pool */
227 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
228 289
229 /* linked list */ 290 /* linked list */
230 struct coro *next, *prev; 291 struct coro *next, *prev;
231 HV *hv; /* the perl hash associated with this coro, if any */
232}; 292};
233 293
234typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
235typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
236 301
237/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
238 303
239#define PRIO_MAX 3 304#define PRIO_MAX 3
240#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
243#define PRIO_IDLE -3 308#define PRIO_IDLE -3
244#define PRIO_MIN -4 309#define PRIO_MIN -4
245 310
246/* for Coro.pm */ 311/* for Coro.pm */
247static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
248static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
249static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
250static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
251 318
252/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
253 320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
254static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
412static AV *
255coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
256{ 414{
257 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
258 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
259 417
260 newpadlist = newAV (); 418 newpadlist = newAV ();
261 AvREAL_off (newpadlist); 419 AvREAL_off (newpadlist);
262#if PERL_VERSION_ATLEAST (5,9,0) 420#if PERL_VERSION_ATLEAST (5,10,0)
263 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 421 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
264#else 422#else
265 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
266#endif 424#endif
267 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
268 --AvFILLp (padlist); 426 --AvFILLp (padlist);
269 427
270 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
271 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
272 430
273 return newpadlist; 431 return newpadlist;
274} 432}
275 433
276static void 434static void
277free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
278{ 436{
279 /* may be during global destruction */ 437 /* may be during global destruction */
280 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
281 { 439 {
282 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
283 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
284 { 443 {
285 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
286 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
287 { 446 I32 j = AvFILLp (av);
288 SV *sv; 447
289 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
290 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
291
292 SvREFCNT_dec (*svp);
293 }
294 } 453 }
295 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
296 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
297 } 459 }
298} 460}
299 461
300static int 462static int
… …
305 467
306 /* casting is fun. */ 468 /* casting is fun. */
307 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 469 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
308 free_padlist (aTHX_ padlist); 470 free_padlist (aTHX_ padlist);
309 471
310 SvREFCNT_dec (av); 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
311 473
312 return 0; 474 return 0;
313} 475}
314 476
315#define PERL_MAGIC_coro PERL_MAGIC_ext 477static MGVTBL coro_cv_vtbl = {
316 478 0, 0, 0, 0,
317static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 479 coro_cv_free
318 480};
319#define CORO_MAGIC(cv) \
320 SvMAGIC (cv) \
321 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
322 ? SvMAGIC (cv) \
323 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
324 : 0
325
326static struct coro *
327SvSTATE_ (pTHX_ SV *coro)
328{
329 HV *stash;
330 MAGIC *mg;
331
332 if (SvROK (coro))
333 coro = SvRV (coro);
334
335 if (expect_false (SvTYPE (coro) != SVt_PVHV))
336 croak ("Coro::State object required");
337
338 stash = SvSTASH (coro);
339 if (expect_false (stash != coro_stash && stash != coro_state_stash))
340 {
341 /* very slow, but rare, check */
342 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
343 croak ("Coro::State object required");
344 }
345
346 mg = CORO_MAGIC (coro);
347 return (struct coro *)mg->mg_ptr;
348}
349
350#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
351 481
352/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
353static void 483static void
354get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
355{ 485{
356 MAGIC *mg = CORO_MAGIC (cv); 486 MAGIC *mg = CORO_MAGIC_cv (cv);
357 AV *av; 487 AV *av;
358 488
359 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 489 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
360 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 490 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
361 else 491 else
362 { 492 {
363#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
364 /* this is probably cleaner, but also slower? */ 494 /* this is probably cleaner? but also slower! */
495 /* in practise, it seems to be less stable */
365 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
366 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
367 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
368 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
369#else 500#else
370 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
371#endif 502#endif
372 } 503 }
373} 504}
374 505
375static void 506static void
376put_padlist (pTHX_ CV *cv) 507put_padlist (pTHX_ CV *cv)
377{ 508{
378 MAGIC *mg = CORO_MAGIC (cv); 509 MAGIC *mg = CORO_MAGIC_cv (cv);
379 AV *av; 510 AV *av;
380 511
381 if (expect_false (!mg)) 512 if (expect_false (!mg))
382 { 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
383 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
384 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
385 mg->mg_virtual = &vtbl_coro;
386 mg->mg_obj = (SV *)newAV ();
387 }
388 514
389 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
390 516
391 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
392 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
393 519
394 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
395} 521}
396 522
397/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
398 524
399static void 525static void
400load_perl (pTHX_ Coro__State c) 526load_perl (pTHX_ Coro__State c)
401{ 527{
528 perl_slots *slot = c->slot;
529 c->slot = 0;
530
531 PL_mainstack = c->mainstack;
532
533 GvSV (PL_defgv) = slot->defsv;
534 GvAV (PL_defgv) = slot->defav;
535 GvSV (PL_errgv) = slot->errsv;
536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
538
402#define VAR(name,type) PL_ ## name = c->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
403# include "state.h" 540 # include "state.h"
404#undef VAR 541 #undef VAR
405
406 GvSV (PL_defgv) = c->defsv;
407 GvAV (PL_defgv) = c->defav;
408 GvSV (PL_errgv) = c->errsv;
409 GvSV (irsgv) = c->irssv_sv;
410 542
411 { 543 {
412 dSP; 544 dSP;
545
413 CV *cv; 546 CV *cv;
414 547
415 /* now do the ugly restore mess */ 548 /* now do the ugly restore mess */
416 while (expect_true (cv = (CV *)POPs)) 549 while (expect_true (cv = (CV *)POPs))
417 { 550 {
… …
420 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
421 } 554 }
422 555
423 PUTBACK; 556 PUTBACK;
424 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
425} 561}
426 562
427static void 563static void
428save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
429{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
430 { 569 {
431 dSP; 570 dSP;
432 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
433 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
434 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
452 591
453 if (expect_true (CvDEPTH (cv))) 592 if (expect_true (CvDEPTH (cv)))
454 { 593 {
455 EXTEND (SP, 3); 594 EXTEND (SP, 3);
456 PUSHs ((SV *)CvPADLIST (cv)); 595 PUSHs ((SV *)CvPADLIST (cv));
457 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 596 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
458 PUSHs ((SV *)cv); 597 PUSHs ((SV *)cv);
459 598
460 CvDEPTH (cv) = 0; 599 CvDEPTH (cv) = 0;
461 get_padlist (aTHX_ cv); 600 get_padlist (aTHX_ cv);
462 } 601 }
… …
472 } 611 }
473 612
474 PUTBACK; 613 PUTBACK;
475 } 614 }
476 615
616 /* allocate some space on the context stack for our purposes */
617 /* we manually unroll here, as usually 2 slots is enough */
618 if (SLOT_COUNT >= 1) CXINC;
619 if (SLOT_COUNT >= 2) CXINC;
620 if (SLOT_COUNT >= 3) CXINC;
621 {
622 int i;
623 for (i = 3; i < SLOT_COUNT; ++i)
624 CXINC;
625 }
626 cxstack_ix -= SLOT_COUNT; /* undo allocation */
627
628 c->mainstack = PL_mainstack;
629
630 {
631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
632
477 c->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
478 c->defsv = DEFSV; 634 slot->defsv = DEFSV;
479 c->errsv = ERRSV; 635 slot->errsv = ERRSV;
480 c->irssv_sv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
481 638
482#define VAR(name,type)c->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
483# include "state.h" 640 # include "state.h"
484#undef VAR 641 #undef VAR
642 }
485} 643}
486 644
487/* 645/*
488 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
489 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
490 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
491 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
492 */ 650 */
493#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
494# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
495#else 653#else
496static void 654static void
497coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
498{ 656{
499 PL_curstackinfo = new_stackinfo(64, 6); 657 PL_curstackinfo = new_stackinfo(32, 8);
500 PL_curstackinfo->si_type = PERLSI_MAIN; 658 PL_curstackinfo->si_type = PERLSI_MAIN;
501 PL_curstack = PL_curstackinfo->si_stack; 659 PL_curstack = PL_curstackinfo->si_stack;
502 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 660 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
503 661
504 PL_stack_base = AvARRAY(PL_curstack); 662 PL_stack_base = AvARRAY(PL_curstack);
505 PL_stack_sp = PL_stack_base; 663 PL_stack_sp = PL_stack_base;
506 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 664 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
507 665
508 New(50,PL_tmps_stack,64,SV*); 666 New(50,PL_tmps_stack,32,SV*);
509 PL_tmps_floor = -1; 667 PL_tmps_floor = -1;
510 PL_tmps_ix = -1; 668 PL_tmps_ix = -1;
511 PL_tmps_max = 64; 669 PL_tmps_max = 32;
512 670
513 New(54,PL_markstack,16,I32); 671 New(54,PL_markstack,16,I32);
514 PL_markstack_ptr = PL_markstack; 672 PL_markstack_ptr = PL_markstack;
515 PL_markstack_max = PL_markstack + 16; 673 PL_markstack_max = PL_markstack + 16;
516 674
517#ifdef SET_MARK_OFFSET 675#ifdef SET_MARK_OFFSET
518 SET_MARK_OFFSET; 676 SET_MARK_OFFSET;
519#endif 677#endif
520 678
521 New(54,PL_scopestack,16,I32); 679 New(54,PL_scopestack,8,I32);
522 PL_scopestack_ix = 0; 680 PL_scopestack_ix = 0;
523 PL_scopestack_max = 16; 681 PL_scopestack_max = 8;
524 682
525 New(54,PL_savestack,64,ANY); 683 New(54,PL_savestack,24,ANY);
526 PL_savestack_ix = 0; 684 PL_savestack_ix = 0;
527 PL_savestack_max = 64; 685 PL_savestack_max = 24;
528 686
529#if !PERL_VERSION_ATLEAST (5,9,0) 687#if !PERL_VERSION_ATLEAST (5,10,0)
530 New(54,PL_retstack,4,OP*); 688 New(54,PL_retstack,4,OP*);
531 PL_retstack_ix = 0; 689 PL_retstack_ix = 0;
532 PL_retstack_max = 4; 690 PL_retstack_max = 4;
533#endif 691#endif
534} 692}
… …
536 694
537/* 695/*
538 * destroy the stacks, the callchain etc... 696 * destroy the stacks, the callchain etc...
539 */ 697 */
540static void 698static void
541coro_destroy_stacks (pTHX) 699coro_destruct_stacks (pTHX)
542{ 700{
543 while (PL_curstackinfo->si_next) 701 while (PL_curstackinfo->si_next)
544 PL_curstackinfo = PL_curstackinfo->si_next; 702 PL_curstackinfo = PL_curstackinfo->si_next;
545 703
546 while (PL_curstackinfo) 704 while (PL_curstackinfo)
… …
557 715
558 Safefree (PL_tmps_stack); 716 Safefree (PL_tmps_stack);
559 Safefree (PL_markstack); 717 Safefree (PL_markstack);
560 Safefree (PL_scopestack); 718 Safefree (PL_scopestack);
561 Safefree (PL_savestack); 719 Safefree (PL_savestack);
562#if !PERL_VERSION_ATLEAST (5,9,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
563 Safefree (PL_retstack); 721 Safefree (PL_retstack);
564#endif 722#endif
565} 723}
724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
566 733
567static size_t 734static size_t
568coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
569{ 736{
570 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
571 738
572 if (coro->mainstack) 739 if (coro->mainstack)
573 { 740 {
574 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
575 { 742 {
576 #define VAR(name,type)coro->name = PL_ ## name; 743 #define SYM(sym) PL_ ## sym
577 # include "state.h" 744 CORO_RSS;
578 #undef VAR 745 #undef SYM
579 } 746 }
580 747 else
581 rss += sizeof (coro->curstackinfo); 748 {
582 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 749 #define SYM(sym) coro->slot->sym
583 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
584 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 751 #undef SYM
585 rss += coro->tmps_max * sizeof (SV *); 752 }
586 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
587 rss += coro->scopestack_max * sizeof (I32);
588 rss += coro->savestack_max * sizeof (ANY);
589
590#if !PERL_VERSION_ATLEAST (5,9,0)
591 rss += coro->retstack_max * sizeof (OP *);
592#endif
593 } 753 }
594 754
595 return rss; 755 return rss;
596} 756}
597 757
598/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
599 759
760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
761static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
762static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
763
764/* apparently < 5.8.8 */
765#ifndef MgPV_nolen_const
766#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
767 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
768 (const char*)(mg)->mg_ptr)
769#endif
770
771/*
772 * This overrides the default magic get method of %SIG elements.
773 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
774 * and instead of tryign to save and restore the hash elements, we just provide
775 * readback here.
776 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
777 * not expecting this to actually change the hook. This is a potential problem
778 * when a schedule happens then, but we ignore this.
779 */
600static void 780static int
781coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
782{
783 const char *s = MgPV_nolen_const (mg);
784
785 if (*s == '_')
786 {
787 SV **svp = 0;
788
789 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
790 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
791
792 if (svp)
793 {
794 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
795 return 0;
796 }
797 }
798
799 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
800}
801
802static int
803coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
804{
805 const char *s = MgPV_nolen_const (mg);
806
807 if (*s == '_')
808 {
809 SV **svp = 0;
810
811 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
812 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813
814 if (svp)
815 {
816 SV *old = *svp;
817 *svp = 0;
818 SvREFCNT_dec (old);
819 return 0;
820 }
821 }
822
823 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
824}
825
826static int
827coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
828{
829 const char *s = MgPV_nolen_const (mg);
830
831 if (*s == '_')
832 {
833 SV **svp = 0;
834
835 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
836 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
837
838 if (svp)
839 {
840 SV *old = *svp;
841 *svp = newSVsv (sv);
842 SvREFCNT_dec (old);
843 return 0;
844 }
845 }
846
847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
848}
849
850static void
851prepare_nop (pTHX_ struct coro_transfer_args *ta)
852{
853 /* kind of mega-hacky, but works */
854 ta->next = ta->prev = (struct coro *)ta;
855}
856
857static int
858slf_check_nop (pTHX_ struct CoroSLF *frame)
859{
860 return 0;
861}
862
863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
601coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
602{ 873{
603 /* 874 /*
604 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
605 */ 876 */
… …
607 878
608 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
609 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
610 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
611 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
612 PL_curpm = 0; 886 PL_curpm = 0;
613 PL_curpad = 0; 887 PL_curpad = 0;
614 PL_localizing = 0; 888 PL_localizing = 0;
615 PL_dirty = 0; 889 PL_dirty = 0;
616 PL_restartop = 0; 890 PL_restartop = 0;
891#if PERL_VERSION_ATLEAST (5,10,0)
892 PL_parser = 0;
893#endif
894 PL_hints = 0;
895
896 /* recreate the die/warn hooks */
897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
617 899
618 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
619 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
620 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
621 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
622 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
623 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
624 907
625 { 908 {
626 dSP; 909 dSP;
627 LOGOP myop; 910 UNOP myop;
628 911
629 Zero (&myop, 1, LOGOP); 912 Zero (&myop, 1, UNOP);
630 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
631 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
632 916
633 PUSHMARK (SP); 917 PUSHMARK (SP);
634 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
635 PUTBACK; 919 PUTBACK;
636 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
637 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
638 SPAGAIN;
639 } 922 }
640 923
641 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 924 /* this newly created coroutine might be run on an existing cctx which most
642} 925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
926 */
927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
643 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
644static void 942static void
645coro_destroy (pTHX_ struct coro *coro) 943coro_destruct_perl (pTHX_ struct coro *coro)
646{ 944{
647 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
648 { 946 {
649 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
650 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
665 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
666 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
667 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
668 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
669 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
670 969
970 SvREFCNT_dec (PL_diehook);
971 SvREFCNT_dec (PL_warnhook);
972
671 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
672 SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
673 977
674 coro_destroy_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
675} 979}
676 980
677static void 981INLINE void
678free_coro_mortal (pTHX) 982free_coro_mortal (pTHX)
679{ 983{
680 if (expect_true (coro_mortal)) 984 if (expect_true (coro_mortal))
681 { 985 {
682 SvREFCNT_dec (coro_mortal); 986 SvREFCNT_dec (coro_mortal);
… …
687static int 991static int
688runops_trace (pTHX) 992runops_trace (pTHX)
689{ 993{
690 COP *oldcop = 0; 994 COP *oldcop = 0;
691 int oldcxix = -2; 995 int oldcxix = -2;
692 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
693 coro_cctx *cctx = coro->cctx;
694 996
695 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
696 { 998 {
697 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
698 1000
699 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
700 { 1002 {
701 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1003 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
702 { 1004 {
703 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
704 SV **bot, **top; 1006 SV **bot, **top;
705 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
706 SV **cb; 1008 SV **cb;
… …
716 : cx->blk_gimme == G_SCALAR ? bot + 1 1018 : cx->blk_gimme == G_SCALAR ? bot + 1
717 : bot; 1019 : bot;
718 1020
719 av_extend (av, top - bot); 1021 av_extend (av, top - bot);
720 while (bot < top) 1022 while (bot < top)
721 av_push (av, SvREFCNT_inc (*bot++)); 1023 av_push (av, SvREFCNT_inc_NN (*bot++));
722 1024
723 PL_runops = RUNOPS_DEFAULT; 1025 PL_runops = RUNOPS_DEFAULT;
724 ENTER; 1026 ENTER;
725 SAVETMPS; 1027 SAVETMPS;
726 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
… …
743 1045
744 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
745 { 1047 {
746 SV **cb; 1048 SV **cb;
747 1049
748 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
749 { 1051 {
750 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
751 1053
752 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
753 { 1055 {
754 runops_proc_t old_runops = PL_runops;
755 dSP; 1056 dSP;
756 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
757 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
758 1059
759 if (isGV (gv)) 1060 if (isGV (gv))
… …
764 SAVETMPS; 1065 SAVETMPS;
765 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
766 PUSHMARK (SP); 1067 PUSHMARK (SP);
767 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
768 PUSHs (fullname); 1069 PUSHs (fullname);
769 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
770 PUTBACK; 1071 PUTBACK;
771 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
772 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
773 SPAGAIN; 1074 SPAGAIN;
774 FREETMPS; 1075 FREETMPS;
… …
777 } 1078 }
778 1079
779 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
780 } 1081 }
781 1082
782 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
783 { 1084 {
784 dSP; 1085 dSP;
785 1086
786 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
787 ENTER; 1088 ENTER;
… …
806 1107
807 TAINT_NOT; 1108 TAINT_NOT;
808 return 0; 1109 return 0;
809} 1110}
810 1111
811/* inject a fake call to Coro::State::_cctx_init into the execution */ 1112static struct CoroSLF cctx_ssl_frame;
812/* _cctx_init should be careful, as it could be called at almost any time */ 1113
813/* during execution of a perl program */ 1114static void
1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1116{
1117 ta->prev = 0;
1118}
1119
1120static int
1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1122{
1123 *frame = cctx_ssl_frame;
1124
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126}
1127
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
814static void NOINLINE 1129static void NOINLINE
815prepare_cctx (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
816{ 1131{
817 dSP;
818 LOGOP myop;
819
820 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
821 1133
822 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
823 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
824 1136
825 Zero (&myop, 1, LOGOP); 1137 /* we already must be executing an SLF op, there is no other valid way
826 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
827 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1139 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1140 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
828 1141
829 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
830 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
831 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1144
832 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
833 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
834 PL_op = (OP *)&myop; 1147}
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1148
836 SPAGAIN; 1149/* the tail of transfer: execute stuff we can only do after a transfer */
1150INLINE void
1151transfer_tail (pTHX)
1152{
1153 free_coro_mortal (aTHX);
837} 1154}
838 1155
839/* 1156/*
840 * this is a _very_ stripped down perl interpreter ;) 1157 * this is a _very_ stripped down perl interpreter ;)
841 */ 1158 */
842static void 1159static void
843coro_run (void *arg) 1160cctx_run (void *arg)
844{ 1161{
1162#ifdef USE_ITHREADS
1163# if CORO_PTHREAD
1164 PERL_SET_CONTEXT (coro_thx);
1165# endif
1166#endif
1167 {
845 dTHX; 1168 dTHX;
846 1169
847 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1170 /* normally we would need to skip the entersub here */
848 UNLOCK; 1171 /* not doing so will re-execute it, which is exactly what we want */
849
850 /* we now skip the entersub that lead to transfer() */
851 PL_op = PL_op->op_next; 1172 /* PL_nop = PL_nop->op_next */
852 1173
853 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
854 prepare_cctx (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
855 1176
1177 /* cctx_run is the alternative tail of transfer() */
1178 transfer_tail (aTHX);
1179
856 /* somebody or something will hit me for both perl_run and PL_restartop */ 1180 /* somebody or something will hit me for both perl_run and PL_restartop */
857 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
858 perl_run (PL_curinterp); 1182 perl_run (PL_curinterp);
859
860 /* 1183 /*
1184 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these
1186 */
1187
1188 /*
861 * If perl-run returns we assume exit() was being called or the coro 1189 * If perl-run returns we assume exit() was being called or the coro
862 * fell off the end, which seems to be the only valid (non-bug) 1190 * fell off the end, which seems to be the only valid (non-bug)
863 * reason for perl_run to return. We try to exit by jumping to the 1191 * reason for perl_run to return. We try to exit by jumping to the
864 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
865 * coroutine as Coro has no such concept 1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
866 */ 1196 */
867 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
868 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1199 }
869} 1200}
870 1201
871static coro_cctx * 1202static coro_cctx *
872cctx_new () 1203cctx_new ()
873{ 1204{
874 coro_cctx *cctx; 1205 coro_cctx *cctx;
1206
1207 ++cctx_count;
1208 New (0, cctx, 1, coro_cctx);
1209
1210 cctx->gen = cctx_gen;
1211 cctx->flags = 0;
1212 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx only suitable as source */
1218static coro_cctx *
1219cctx_new_empty ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1222
1223 cctx->sptr = 0;
1224 coro_create (&cctx->cctx, 0, 0, 0, 0);
1225
1226 return cctx;
1227}
1228
1229/* create a new cctx suitable as destination/running a perl interpreter */
1230static coro_cctx *
1231cctx_new_run ()
1232{
1233 coro_cctx *cctx = cctx_new ();
875 void *stack_start; 1234 void *stack_start;
876 size_t stack_size; 1235 size_t stack_size;
877 1236
878 ++cctx_count;
879
880 Newz (0, cctx, 1, coro_cctx);
881
882#if HAVE_MMAP 1237#if HAVE_MMAP
883
884 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1238 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
885 /* mmap supposedly does allocate-on-write for us */ 1239 /* mmap supposedly does allocate-on-write for us */
886 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1240 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
887 1241
888 if (cctx->sptr != (void *)-1) 1242 if (cctx->sptr != (void *)-1)
889 { 1243 {
890# if CORO_STACKGUARD 1244 #if CORO_STACKGUARD
891 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1245 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
892# endif 1246 #endif
893 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1247 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
894 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1248 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
895 cctx->flags |= CC_MAPPED; 1249 cctx->flags |= CC_MAPPED;
896 } 1250 }
897 else 1251 else
898#endif 1252#endif
899 { 1253 {
900 cctx->ssize = coro_stacksize * (long)sizeof (long); 1254 cctx->ssize = cctx_stacksize * (long)sizeof (long);
901 New (0, cctx->sptr, coro_stacksize, long); 1255 New (0, cctx->sptr, cctx_stacksize, long);
902 1256
903 if (!cctx->sptr) 1257 if (!cctx->sptr)
904 { 1258 {
905 perror ("FATAL: unable to allocate stack for coroutine"); 1259 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
906 _exit (EXIT_FAILURE); 1260 _exit (EXIT_FAILURE);
907 } 1261 }
908 1262
909 stack_start = cctx->sptr; 1263 stack_start = cctx->sptr;
910 stack_size = cctx->ssize; 1264 stack_size = cctx->ssize;
911 } 1265 }
912 1266
913 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1267 #if CORO_USE_VALGRIND
1268 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1269 #endif
1270
914 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1271 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
915 1272
916 return cctx; 1273 return cctx;
917} 1274}
918 1275
919static void 1276static void
920cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
921{ 1278{
922 if (!cctx) 1279 if (!cctx)
923 return; 1280 return;
924 1281
1282 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1283
925 --cctx_count; 1284 --cctx_count;
1285 coro_destroy (&cctx->cctx);
926 1286
1287 /* coro_transfer creates new, empty cctx's */
1288 if (cctx->sptr)
1289 {
927#if CORO_USE_VALGRIND 1290 #if CORO_USE_VALGRIND
928 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1291 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
929#endif 1292 #endif
930 1293
931#if HAVE_MMAP 1294#if HAVE_MMAP
932 if (cctx->flags & CC_MAPPED) 1295 if (cctx->flags & CC_MAPPED)
933 munmap (cctx->sptr, cctx->ssize); 1296 munmap (cctx->sptr, cctx->ssize);
934 else 1297 else
935#endif 1298#endif
936 Safefree (cctx->sptr); 1299 Safefree (cctx->sptr);
1300 }
937 1301
938 Safefree (cctx); 1302 Safefree (cctx);
939} 1303}
940 1304
941/* wether this cctx should be destructed */ 1305/* wether this cctx should be destructed */
942#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1306#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
943 1307
944static coro_cctx * 1308static coro_cctx *
945cctx_get (pTHX) 1309cctx_get (pTHX)
946{ 1310{
947 while (expect_true (cctx_first)) 1311 while (expect_true (cctx_first))
… …
954 return cctx; 1318 return cctx;
955 1319
956 cctx_destroy (cctx); 1320 cctx_destroy (cctx);
957 } 1321 }
958 1322
959 return cctx_new (); 1323 return cctx_new_run ();
960} 1324}
961 1325
962static void 1326static void
963cctx_put (coro_cctx *cctx) 1327cctx_put (coro_cctx *cctx)
964{ 1328{
1329 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1330
965 /* free another cctx if overlimit */ 1331 /* free another cctx if overlimit */
966 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1332 if (expect_false (cctx_idle >= cctx_max_idle))
967 { 1333 {
968 coro_cctx *first = cctx_first; 1334 coro_cctx *first = cctx_first;
969 cctx_first = first->next; 1335 cctx_first = first->next;
970 --cctx_idle; 1336 --cctx_idle;
971 1337
… …
980/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
981 1347
982static void 1348static void
983transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
984{ 1350{
1351 /* TODO: throwing up here is considered harmful */
1352
985 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
986 { 1354 {
987 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
988 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
989 1357
990 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
991 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
992 1360
993 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
994 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1362 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
995 1363
1364#if !PERL_VERSION_ATLEAST (5,10,0)
996 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1365 if (expect_false (PL_lex_state != LEX_NOTPARSING))
997 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1366 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1367#endif
998 } 1368 }
999} 1369}
1000 1370
1001/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
1002static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
1003transfer (pTHX_ struct coro *prev, struct coro *next) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1004{ 1374{
1005 dSTACKLEVEL; 1375 dSTACKLEVEL;
1006 1376
1007 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1008 if (expect_false (!next)) 1378 if (expect_false (!prev))
1009 { 1379 {
1010 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1380 cctx_current->idle_sp = STACKLEVEL;
1011 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1012 } 1382 }
1013 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1014 { 1384 {
1015 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1016 1386
1017 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1018 { 1388 {
1019 /* create a new empty context */ 1389 /* create a new empty/source context */
1020 Newz (0, prev->cctx, 1, coro_cctx);
1021 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1022 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1023 } 1392 }
1024 1393
1025 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
1026 next->flags |= CF_RUNNING; 1395 next->flags |= CF_RUNNING;
1027 1396
1028 LOCK; 1397 /* first get rid of the old state */
1398 save_perl (aTHX_ prev);
1029 1399
1030 if (expect_false (next->flags & CF_NEW)) 1400 if (expect_false (next->flags & CF_NEW))
1031 { 1401 {
1032 /* need to start coroutine */ 1402 /* need to start coroutine */
1033 next->flags &= ~CF_NEW; 1403 next->flags &= ~CF_NEW;
1034 /* first get rid of the old state */
1035 save_perl (aTHX_ prev);
1036 /* setup coroutine call */ 1404 /* setup coroutine call */
1037 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1038 } 1406 }
1039 else 1407 else
1408 load_perl (aTHX_ next);
1409
1410 /* possibly untie and reuse the cctx */
1411 if (expect_true (
1412 cctx_current->idle_sp == STACKLEVEL
1413 && !(cctx_current->flags & CC_TRACE)
1414 && !force_cctx
1415 ))
1040 { 1416 {
1041 /* coroutine already started */ 1417 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1042 save_perl (aTHX_ prev); 1418 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1043 load_perl (aTHX_ next); 1419
1420 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1421 /* without this the next cctx_get might destroy the running cctx while still in use */
1422 if (expect_false (CCTX_EXPIRED (cctx_current)))
1423 if (expect_true (!next->cctx))
1424 next->cctx = cctx_get (aTHX);
1425
1426 cctx_put (cctx_current);
1044 } 1427 }
1428 else
1429 prev->cctx = cctx_current;
1045 1430
1046 prev__cctx = prev->cctx; 1431 ++next->usecount;
1047 1432
1048 /* possibly "free" the cctx */ 1433 cctx_prev = cctx_current;
1049 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1434 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1435
1436 next->cctx = 0;
1437
1438 if (expect_false (cctx_prev != cctx_current))
1050 { 1439 {
1051 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1440 cctx_prev->top_env = PL_top_env;
1052 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1441 PL_top_env = cctx_current->top_env;
1053 1442 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1054 prev->cctx = 0;
1055
1056 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1057 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1058 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1059 next->cctx = cctx_get (aTHX);
1060
1061 cctx_put (prev__cctx);
1062 } 1443 }
1063 1444
1064 ++next->usecount; 1445 transfer_tail (aTHX);
1065
1066 if (expect_true (!next->cctx))
1067 next->cctx = cctx_get (aTHX);
1068
1069 if (expect_false (prev__cctx != next->cctx))
1070 {
1071 prev__cctx->top_env = PL_top_env;
1072 PL_top_env = next->cctx->top_env;
1073 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1074 }
1075
1076 free_coro_mortal (aTHX);
1077 UNLOCK;
1078
1079 if (expect_false (prev->throw || next->throw))
1080 {
1081 struct coro *coro = SvSTATE (coro_current);
1082
1083 if (coro->throw)
1084 {
1085 SV *exception = coro->throw;
1086 coro->throw = 0;
1087 sv_setsv (ERRSV, exception);
1088 croak (0);
1089 }
1090 }
1091 } 1446 }
1092} 1447}
1093 1448
1094struct transfer_args
1095{
1096 struct coro *prev, *next;
1097};
1098
1099#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1449#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1100#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1450#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1101 1451
1102/** high level stuff ********************************************************/ 1452/** high level stuff ********************************************************/
1103 1453
1104static int 1454static int
1105coro_state_destroy (pTHX_ struct coro *coro) 1455coro_state_destroy (pTHX_ struct coro *coro)
1106{ 1456{
1107 if (coro->flags & CF_DESTROYED) 1457 if (coro->flags & CF_DESTROYED)
1108 return 0; 1458 return 0;
1459
1460 if (coro->on_destroy)
1461 coro->on_destroy (aTHX_ coro);
1109 1462
1110 coro->flags |= CF_DESTROYED; 1463 coro->flags |= CF_DESTROYED;
1111 1464
1112 if (coro->flags & CF_READY) 1465 if (coro->flags & CF_READY)
1113 { 1466 {
1114 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1467 /* reduce nready, as destroying a ready coro effectively unreadies it */
1115 /* alternative: look through all ready queues and remove the coro */ 1468 /* alternative: look through all ready queues and remove the coro */
1116 LOCK;
1117 --coro_nready; 1469 --coro_nready;
1118 UNLOCK;
1119 } 1470 }
1120 else 1471 else
1121 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1472 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1122 1473
1123 if (coro->mainstack && coro->mainstack != main_mainstack) 1474 if (coro->mainstack
1475 && coro->mainstack != main_mainstack
1476 && coro->slot
1477 && !PL_dirty)
1124 { 1478 {
1125 struct coro temp; 1479 struct coro temp;
1126 1480
1127 if (coro->flags & CF_RUNNING) 1481 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1128 croak ("FATAL: tried to destroy currently running coroutine");
1129 1482
1130 save_perl (aTHX_ &temp); 1483 save_perl (aTHX_ &temp);
1131 load_perl (aTHX_ coro); 1484 load_perl (aTHX_ coro);
1132 1485
1133 coro_destroy (aTHX_ coro); 1486 coro_destruct_perl (aTHX_ coro);
1134 1487
1135 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1488 load_perl (aTHX_ &temp);
1136 1489
1137 coro->mainstack = 0; 1490 coro->slot = 0;
1138 } 1491 }
1139 1492
1140 cctx_destroy (coro->cctx); 1493 cctx_destroy (coro->cctx);
1494 SvREFCNT_dec (coro->startcv);
1141 SvREFCNT_dec (coro->args); 1495 SvREFCNT_dec (coro->args);
1496 SvREFCNT_dec (CORO_THROW);
1142 1497
1143 if (coro->next) coro->next->prev = coro->prev; 1498 if (coro->next) coro->next->prev = coro->prev;
1144 if (coro->prev) coro->prev->next = coro->next; 1499 if (coro->prev) coro->prev->next = coro->next;
1145 if (coro == coro_first) coro_first = coro->next; 1500 if (coro == coro_first) coro_first = coro->next;
1146 1501
… …
1184# define MGf_DUP 0 1539# define MGf_DUP 0
1185#endif 1540#endif
1186}; 1541};
1187 1542
1188static void 1543static void
1189prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1544prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1190{ 1545{
1191 ta->prev = SvSTATE (prev_sv); 1546 ta->prev = SvSTATE (prev_sv);
1192 ta->next = SvSTATE (next_sv); 1547 ta->next = SvSTATE (next_sv);
1193 TRANSFER_CHECK (*ta); 1548 TRANSFER_CHECK (*ta);
1194} 1549}
1195 1550
1196static void 1551static void
1197api_transfer (SV *prev_sv, SV *next_sv) 1552api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1198{ 1553{
1199 dTHX;
1200 struct transfer_args ta; 1554 struct coro_transfer_args ta;
1201 1555
1202 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1556 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1203 TRANSFER (ta); 1557 TRANSFER (ta, 1);
1558}
1559
1560/*****************************************************************************/
1561/* gensub: simple closure generation utility */
1562
1563#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1564
1565/* create a closure from XS, returns a code reference */
1566/* the arg can be accessed via GENSUB_ARG from the callback */
1567/* the callback must use dXSARGS/XSRETURN */
1568static SV *
1569gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1570{
1571 CV *cv = (CV *)newSV (0);
1572
1573 sv_upgrade ((SV *)cv, SVt_PVCV);
1574
1575 CvANON_on (cv);
1576 CvISXSUB_on (cv);
1577 CvXSUB (cv) = xsub;
1578 GENSUB_ARG = arg;
1579
1580 return newRV_noinc ((SV *)cv);
1204} 1581}
1205 1582
1206/** Coro ********************************************************************/ 1583/** Coro ********************************************************************/
1207 1584
1208static void 1585INLINE void
1209coro_enq (pTHX_ SV *coro_sv) 1586coro_enq (pTHX_ struct coro *coro)
1210{ 1587{
1211 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1588 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1212} 1589}
1213 1590
1214static SV * 1591INLINE SV *
1215coro_deq (pTHX_ int min_prio) 1592coro_deq (pTHX)
1216{ 1593{
1217 int prio = PRIO_MAX - PRIO_MIN; 1594 int prio;
1218 1595
1219 min_prio -= PRIO_MIN;
1220 if (min_prio < 0)
1221 min_prio = 0;
1222
1223 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1596 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1224 if (AvFILLp (coro_ready [prio]) >= 0) 1597 if (AvFILLp (coro_ready [prio]) >= 0)
1225 return av_shift (coro_ready [prio]); 1598 return av_shift (coro_ready [prio]);
1226 1599
1227 return 0; 1600 return 0;
1228} 1601}
1229 1602
1230static int 1603static int
1231api_ready (SV *coro_sv) 1604api_ready (pTHX_ SV *coro_sv)
1232{ 1605{
1233 dTHX;
1234 struct coro *coro; 1606 struct coro *coro;
1235 1607 SV *sv_hook;
1236 if (SvROK (coro_sv)) 1608 void (*xs_hook)(void);
1237 coro_sv = SvRV (coro_sv);
1238 1609
1239 coro = SvSTATE (coro_sv); 1610 coro = SvSTATE (coro_sv);
1240 1611
1241 if (coro->flags & CF_READY) 1612 if (coro->flags & CF_READY)
1242 return 0; 1613 return 0;
1243 1614
1244 coro->flags |= CF_READY; 1615 coro->flags |= CF_READY;
1245 1616
1246 LOCK; 1617 sv_hook = coro_nready ? 0 : coro_readyhook;
1247 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1618 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1619
1620 coro_enq (aTHX_ coro);
1248 ++coro_nready; 1621 ++coro_nready;
1249 UNLOCK; 1622
1623 if (sv_hook)
1624 {
1625 dSP;
1626
1627 ENTER;
1628 SAVETMPS;
1629
1630 PUSHMARK (SP);
1631 PUTBACK;
1632 call_sv (sv_hook, G_VOID | G_DISCARD);
1633
1634 FREETMPS;
1635 LEAVE;
1636 }
1637
1638 if (xs_hook)
1639 xs_hook ();
1250 1640
1251 return 1; 1641 return 1;
1252} 1642}
1253 1643
1254static int 1644static int
1255api_is_ready (SV *coro_sv) 1645api_is_ready (pTHX_ SV *coro_sv)
1256{ 1646{
1257 dTHX;
1258 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1647 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1259} 1648}
1260 1649
1261static void 1650/* expects to own a reference to next->hv */
1651INLINE void
1262prepare_schedule (pTHX_ struct transfer_args *ta) 1652prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1263{ 1653{
1264 SV *prev_sv, *next_sv;
1265
1266 for (;;)
1267 {
1268 LOCK;
1269 next_sv = coro_deq (aTHX_ PRIO_MIN);
1270
1271 /* nothing to schedule: call the idle handler */
1272 if (expect_false (!next_sv))
1273 {
1274 dSP;
1275 UNLOCK;
1276
1277 ENTER;
1278 SAVETMPS;
1279
1280 PUSHMARK (SP);
1281 PUTBACK;
1282 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1283
1284 FREETMPS;
1285 LEAVE;
1286 continue;
1287 }
1288
1289 ta->next = SvSTATE (next_sv);
1290
1291 /* cannot transfer to destroyed coros, skip and look for next */
1292 if (expect_false (ta->next->flags & CF_DESTROYED))
1293 {
1294 UNLOCK;
1295 SvREFCNT_dec (next_sv);
1296 /* coro_nready is already taken care of by destroy */
1297 continue;
1298 }
1299
1300 --coro_nready;
1301 UNLOCK;
1302 break;
1303 }
1304
1305 /* free this only after the transfer */
1306 prev_sv = SvRV (coro_current); 1654 SV *prev_sv = SvRV (coro_current);
1655
1307 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1657 ta->next = next;
1658
1308 TRANSFER_CHECK (*ta); 1659 TRANSFER_CHECK (*ta);
1309 assert (ta->next->flags & CF_READY); 1660
1310 ta->next->flags &= ~CF_READY;
1311 SvRV_set (coro_current, next_sv); 1661 SvRV_set (coro_current, (SV *)next->hv);
1312 1662
1313 LOCK;
1314 free_coro_mortal (aTHX); 1663 free_coro_mortal (aTHX);
1315 coro_mortal = prev_sv; 1664 coro_mortal = prev_sv;
1316 UNLOCK;
1317} 1665}
1318 1666
1319static void 1667static void
1668prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1669{
1670 for (;;)
1671 {
1672 SV *next_sv = coro_deq (aTHX);
1673
1674 if (expect_true (next_sv))
1675 {
1676 struct coro *next = SvSTATE_hv (next_sv);
1677
1678 /* cannot transfer to destroyed coros, skip and look for next */
1679 if (expect_false (next->flags & CF_DESTROYED))
1680 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1681 else
1682 {
1683 next->flags &= ~CF_READY;
1684 --coro_nready;
1685
1686 prepare_schedule_to (aTHX_ ta, next);
1687 break;
1688 }
1689 }
1690 else
1691 {
1692 /* nothing to schedule: call the idle handler */
1693 if (SvROK (sv_idle)
1694 && SvOBJECT (SvRV (sv_idle)))
1695 {
1696 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1697 api_ready (aTHX_ SvRV (sv_idle));
1698 --coro_nready;
1699 }
1700 else
1701 {
1702 dSP;
1703
1704 ENTER;
1705 SAVETMPS;
1706
1707 PUSHMARK (SP);
1708 PUTBACK;
1709 call_sv (sv_idle, G_VOID | G_DISCARD);
1710
1711 FREETMPS;
1712 LEAVE;
1713 }
1714 }
1715 }
1716}
1717
1718INLINE void
1320prepare_cede (pTHX_ struct transfer_args *ta) 1719prepare_cede (pTHX_ struct coro_transfer_args *ta)
1321{ 1720{
1322 api_ready (coro_current); 1721 api_ready (aTHX_ coro_current);
1323 prepare_schedule (aTHX_ ta); 1722 prepare_schedule (aTHX_ ta);
1324} 1723}
1325 1724
1725INLINE void
1726prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1727{
1728 SV *prev = SvRV (coro_current);
1729
1730 if (coro_nready)
1731 {
1732 prepare_schedule (aTHX_ ta);
1733 api_ready (aTHX_ prev);
1734 }
1735 else
1736 prepare_nop (aTHX_ ta);
1737}
1738
1739static void
1740api_schedule (pTHX)
1741{
1742 struct coro_transfer_args ta;
1743
1744 prepare_schedule (aTHX_ &ta);
1745 TRANSFER (ta, 1);
1746}
1747
1748static void
1749api_schedule_to (pTHX_ SV *coro_sv)
1750{
1751 struct coro_transfer_args ta;
1752 struct coro *next = SvSTATE (coro_sv);
1753
1754 SvREFCNT_inc_NN (coro_sv);
1755 prepare_schedule_to (aTHX_ &ta, next);
1756}
1757
1326static int 1758static int
1327prepare_cede_notself (pTHX_ struct transfer_args *ta) 1759api_cede (pTHX)
1328{ 1760{
1329 if (coro_nready) 1761 struct coro_transfer_args ta;
1330 { 1762
1331 SV *prev = SvRV (coro_current);
1332 prepare_schedule (aTHX_ ta); 1763 prepare_cede (aTHX_ &ta);
1333 api_ready (prev); 1764
1765 if (expect_true (ta.prev != ta.next))
1766 {
1767 TRANSFER (ta, 1);
1334 return 1; 1768 return 1;
1335 } 1769 }
1336 else 1770 else
1337 return 0; 1771 return 0;
1338} 1772}
1339 1773
1340static void
1341api_schedule (void)
1342{
1343 dTHX;
1344 struct transfer_args ta;
1345
1346 prepare_schedule (aTHX_ &ta);
1347 TRANSFER (ta);
1348}
1349
1350static int 1774static int
1351api_cede (void) 1775api_cede_notself (pTHX)
1352{ 1776{
1353 dTHX; 1777 if (coro_nready)
1778 {
1354 struct transfer_args ta; 1779 struct coro_transfer_args ta;
1355 1780
1356 prepare_cede (aTHX_ &ta); 1781 prepare_cede_notself (aTHX_ &ta);
1357
1358 if (expect_true (ta.prev != ta.next))
1359 {
1360 TRANSFER (ta); 1782 TRANSFER (ta, 1);
1361 return 1; 1783 return 1;
1362 } 1784 }
1363 else 1785 else
1364 return 0; 1786 return 0;
1365} 1787}
1366 1788
1367static int 1789static void
1368api_cede_notself (void)
1369{
1370 dTHX;
1371 struct transfer_args ta;
1372
1373 if (prepare_cede_notself (aTHX_ &ta))
1374 {
1375 TRANSFER (ta);
1376 return 1;
1377 }
1378 else
1379 return 0;
1380}
1381
1382static void
1383api_trace (SV *coro_sv, int flags) 1790api_trace (pTHX_ SV *coro_sv, int flags)
1384{ 1791{
1385 dTHX;
1386 struct coro *coro = SvSTATE (coro_sv); 1792 struct coro *coro = SvSTATE (coro_sv);
1387 1793
1794 if (coro->flags & CF_RUNNING)
1795 croak ("cannot enable tracing on a running coroutine, caught");
1796
1388 if (flags & CC_TRACE) 1797 if (flags & CC_TRACE)
1389 { 1798 {
1390 if (!coro->cctx) 1799 if (!coro->cctx)
1391 coro->cctx = cctx_new (); 1800 coro->cctx = cctx_new_run ();
1392 else if (!(coro->cctx->flags & CC_TRACE)) 1801 else if (!(coro->cctx->flags & CC_TRACE))
1393 croak ("cannot enable tracing on coroutine with custom stack"); 1802 croak ("cannot enable tracing on coroutine with custom stack, caught");
1394 1803
1395 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1804 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1396 } 1805 }
1397 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1806 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1398 { 1807 {
1399 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1808 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1400 1809
1401 if (coro->flags & CF_RUNNING) 1810 if (coro->flags & CF_RUNNING)
1402 PL_runops = RUNOPS_DEFAULT; 1811 PL_runops = RUNOPS_DEFAULT;
1403 else 1812 else
1404 coro->runops = RUNOPS_DEFAULT; 1813 coro->slot->runops = RUNOPS_DEFAULT;
1814 }
1815}
1816
1817static void
1818coro_call_on_destroy (pTHX_ struct coro *coro)
1819{
1820 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1821 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1822
1823 if (on_destroyp)
1824 {
1825 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1826
1827 while (AvFILLp (on_destroy) >= 0)
1828 {
1829 dSP; /* don't disturb outer sp */
1830 SV *cb = av_pop (on_destroy);
1831
1832 PUSHMARK (SP);
1833
1834 if (statusp)
1835 {
1836 int i;
1837 AV *status = (AV *)SvRV (*statusp);
1838 EXTEND (SP, AvFILLp (status) + 1);
1839
1840 for (i = 0; i <= AvFILLp (status); ++i)
1841 PUSHs (AvARRAY (status)[i]);
1842 }
1843
1844 PUTBACK;
1845 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1846 }
1847 }
1848}
1849
1850static void
1851slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 int i;
1854 HV *hv = (HV *)SvRV (coro_current);
1855 AV *av = newAV ();
1856
1857 av_extend (av, items - 1);
1858 for (i = 0; i < items; ++i)
1859 av_push (av, SvREFCNT_inc_NN (arg [i]));
1860
1861 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1862
1863 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1864 api_ready (aTHX_ sv_manager);
1865
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_repeat;
1868}
1869
1870/*****************************************************************************/
1871/* async pool handler */
1872
1873static int
1874slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1875{
1876 HV *hv = (HV *)SvRV (coro_current);
1877 struct coro *coro = (struct coro *)frame->data;
1878
1879 if (!coro->invoke_cb)
1880 return 1; /* loop till we have invoke */
1881 else
1882 {
1883 hv_store (hv, "desc", sizeof ("desc") - 1,
1884 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1885
1886 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1887
1888 {
1889 dSP;
1890 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1891 PUTBACK;
1405 } 1892 }
1893
1894 SvREFCNT_dec (GvAV (PL_defgv));
1895 GvAV (PL_defgv) = coro->invoke_av;
1896 coro->invoke_av = 0;
1897
1898 return 0;
1899 }
1406} 1900}
1901
1902static void
1903slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 HV *hv = (HV *)SvRV (coro_current);
1906 struct coro *coro = SvSTATE_hv ((SV *)hv);
1907
1908 if (expect_true (coro->saved_deffh))
1909 {
1910 /* subsequent iteration */
1911 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1912 coro->saved_deffh = 0;
1913
1914 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1915 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1916 {
1917 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1918 coro->invoke_av = newAV ();
1919
1920 frame->prepare = prepare_nop;
1921 }
1922 else
1923 {
1924 av_clear (GvAV (PL_defgv));
1925 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1926
1927 coro->prio = 0;
1928
1929 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1930 api_trace (aTHX_ coro_current, 0);
1931
1932 frame->prepare = prepare_schedule;
1933 av_push (av_async_pool, SvREFCNT_inc (hv));
1934 }
1935 }
1936 else
1937 {
1938 /* first iteration, simply fall through */
1939 frame->prepare = prepare_nop;
1940 }
1941
1942 frame->check = slf_check_pool_handler;
1943 frame->data = (void *)coro;
1944}
1945
1946/*****************************************************************************/
1947/* rouse callback */
1948
1949#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1950
1951static void
1952coro_rouse_callback (pTHX_ CV *cv)
1953{
1954 dXSARGS;
1955 SV *data = (SV *)GENSUB_ARG;
1956
1957 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1958 {
1959 /* first call, set args */
1960 AV *av = newAV ();
1961 SV *coro = SvRV (data);
1962
1963 SvRV_set (data, (SV *)av);
1964 api_ready (aTHX_ coro);
1965 SvREFCNT_dec (coro);
1966
1967 /* better take a full copy of the arguments */
1968 while (items--)
1969 av_store (av, items, newSVsv (ST (items)));
1970 }
1971
1972 XSRETURN_EMPTY;
1973}
1974
1975static int
1976slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1977{
1978 SV *data = (SV *)frame->data;
1979
1980 if (CORO_THROW)
1981 return 0;
1982
1983 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1984 return 1;
1985
1986 /* now push all results on the stack */
1987 {
1988 dSP;
1989 AV *av = (AV *)SvRV (data);
1990 int i;
1991
1992 EXTEND (SP, AvFILLp (av) + 1);
1993 for (i = 0; i <= AvFILLp (av); ++i)
1994 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1995
1996 /* we have stolen the elements, so ste length to zero and free */
1997 AvFILLp (av) = -1;
1998 av_undef (av);
1999
2000 PUTBACK;
2001 }
2002
2003 return 0;
2004}
2005
2006static void
2007slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 SV *cb;
2010
2011 if (items)
2012 cb = arg [0];
2013 else
2014 {
2015 struct coro *coro = SvSTATE_current;
2016
2017 if (!coro->rouse_cb)
2018 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2019
2020 cb = sv_2mortal (coro->rouse_cb);
2021 coro->rouse_cb = 0;
2022 }
2023
2024 if (!SvROK (cb)
2025 || SvTYPE (SvRV (cb)) != SVt_PVCV
2026 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2027 croak ("Coro::rouse_wait called with illegal callback argument,");
2028
2029 {
2030 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2031 SV *data = (SV *)GENSUB_ARG;
2032
2033 frame->data = (void *)data;
2034 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2035 frame->check = slf_check_rouse_wait;
2036 }
2037}
2038
2039static SV *
2040coro_new_rouse_cb (pTHX)
2041{
2042 HV *hv = (HV *)SvRV (coro_current);
2043 struct coro *coro = SvSTATE_hv (hv);
2044 SV *data = newRV_inc ((SV *)hv);
2045 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2046
2047 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2048 SvREFCNT_dec (data); /* magicext increases the refcount */
2049
2050 SvREFCNT_dec (coro->rouse_cb);
2051 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2052
2053 return cb;
2054}
2055
2056/*****************************************************************************/
2057/* schedule-like-function opcode (SLF) */
2058
2059static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2060static const CV *slf_cv;
2061static SV **slf_argv;
2062static int slf_argc, slf_arga; /* count, allocated */
2063static I32 slf_ax; /* top of stack, for restore */
2064
2065/* this restores the stack in the case we patched the entersub, to */
2066/* recreate the stack frame as perl will on following calls */
2067/* since entersub cleared the stack */
2068static OP *
2069pp_restore (pTHX)
2070{
2071 int i;
2072 SV **SP = PL_stack_base + slf_ax;
2073
2074 PUSHMARK (SP);
2075
2076 EXTEND (SP, slf_argc + 1);
2077
2078 for (i = 0; i < slf_argc; ++i)
2079 PUSHs (sv_2mortal (slf_argv [i]));
2080
2081 PUSHs ((SV *)CvGV (slf_cv));
2082
2083 RETURNOP (slf_restore.op_first);
2084}
2085
2086static void
2087slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2088{
2089 SV **arg = (SV **)slf_frame.data;
2090
2091 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2092}
2093
2094static void
2095slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 if (items != 2)
2098 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2099
2100 frame->prepare = slf_prepare_transfer;
2101 frame->check = slf_check_nop;
2102 frame->data = (void *)arg; /* let's hope it will stay valid */
2103}
2104
2105static void
2106slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2107{
2108 frame->prepare = prepare_schedule;
2109 frame->check = slf_check_nop;
2110}
2111
2112static void
2113slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2114{
2115 struct coro *next = (struct coro *)slf_frame.data;
2116
2117 SvREFCNT_inc_NN (next->hv);
2118 prepare_schedule_to (aTHX_ ta, next);
2119}
2120
2121static void
2122slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 if (!items)
2125 croak ("Coro::schedule_to expects a coroutine argument, caught");
2126
2127 frame->data = (void *)SvSTATE (arg [0]);
2128 frame->prepare = slf_prepare_schedule_to;
2129 frame->check = slf_check_nop;
2130}
2131
2132static void
2133slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 api_ready (aTHX_ SvRV (coro_current));
2136
2137 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2138}
2139
2140static void
2141slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_cede;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 frame->prepare = prepare_cede_notself;
2151 frame->check = slf_check_nop;
2152}
2153
2154/*
2155 * these not obviously related functions are all rolled into one
2156 * function to increase chances that they all will call transfer with the same
2157 * stack offset
2158 * SLF stands for "schedule-like-function".
2159 */
2160static OP *
2161pp_slf (pTHX)
2162{
2163 I32 checkmark; /* mark SP to see how many elements check has pushed */
2164
2165 /* set up the slf frame, unless it has already been set-up */
2166 /* the latter happens when a new coro has been started */
2167 /* or when a new cctx was attached to an existing coroutine */
2168 if (expect_true (!slf_frame.prepare))
2169 {
2170 /* first iteration */
2171 dSP;
2172 SV **arg = PL_stack_base + TOPMARK + 1;
2173 int items = SP - arg; /* args without function object */
2174 SV *gv = *sp;
2175
2176 /* do a quick consistency check on the "function" object, and if it isn't */
2177 /* for us, divert to the real entersub */
2178 if (SvTYPE (gv) != SVt_PVGV
2179 || !GvCV (gv)
2180 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2181 return PL_ppaddr[OP_ENTERSUB](aTHX);
2182
2183 if (!(PL_op->op_flags & OPf_STACKED))
2184 {
2185 /* ampersand-form of call, use @_ instead of stack */
2186 AV *av = GvAV (PL_defgv);
2187 arg = AvARRAY (av);
2188 items = AvFILLp (av) + 1;
2189 }
2190
2191 /* now call the init function, which needs to set up slf_frame */
2192 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2193 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2194
2195 /* pop args */
2196 SP = PL_stack_base + POPMARK;
2197
2198 PUTBACK;
2199 }
2200
2201 /* now that we have a slf_frame, interpret it! */
2202 /* we use a callback system not to make the code needlessly */
2203 /* complicated, but so we can run multiple perl coros from one cctx */
2204
2205 do
2206 {
2207 struct coro_transfer_args ta;
2208
2209 slf_frame.prepare (aTHX_ &ta);
2210 TRANSFER (ta, 0);
2211
2212 checkmark = PL_stack_sp - PL_stack_base;
2213 }
2214 while (slf_frame.check (aTHX_ &slf_frame));
2215
2216 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2217
2218 /* exception handling */
2219 if (expect_false (CORO_THROW))
2220 {
2221 SV *exception = sv_2mortal (CORO_THROW);
2222
2223 CORO_THROW = 0;
2224 sv_setsv (ERRSV, exception);
2225 croak (0);
2226 }
2227
2228 /* return value handling - mostly like entersub */
2229 /* make sure we put something on the stack in scalar context */
2230 if (GIMME_V == G_SCALAR)
2231 {
2232 dSP;
2233 SV **bot = PL_stack_base + checkmark;
2234
2235 if (sp == bot) /* too few, push undef */
2236 bot [1] = &PL_sv_undef;
2237 else if (sp != bot + 1) /* too many, take last one */
2238 bot [1] = *sp;
2239
2240 SP = bot + 1;
2241
2242 PUTBACK;
2243 }
2244
2245 return NORMAL;
2246}
2247
2248static void
2249api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2250{
2251 int i;
2252 SV **arg = PL_stack_base + ax;
2253 int items = PL_stack_sp - arg + 1;
2254
2255 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2256
2257 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2258 && PL_op->op_ppaddr != pp_slf)
2259 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2260
2261 CvFLAGS (cv) |= CVf_SLF;
2262 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2263 slf_cv = cv;
2264
2265 /* we patch the op, and then re-run the whole call */
2266 /* we have to put the same argument on the stack for this to work */
2267 /* and this will be done by pp_restore */
2268 slf_restore.op_next = (OP *)&slf_restore;
2269 slf_restore.op_type = OP_CUSTOM;
2270 slf_restore.op_ppaddr = pp_restore;
2271 slf_restore.op_first = PL_op;
2272
2273 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2274
2275 if (PL_op->op_flags & OPf_STACKED)
2276 {
2277 if (items > slf_arga)
2278 {
2279 slf_arga = items;
2280 free (slf_argv);
2281 slf_argv = malloc (slf_arga * sizeof (SV *));
2282 }
2283
2284 slf_argc = items;
2285
2286 for (i = 0; i < items; ++i)
2287 slf_argv [i] = SvREFCNT_inc (arg [i]);
2288 }
2289 else
2290 slf_argc = 0;
2291
2292 PL_op->op_ppaddr = pp_slf;
2293 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2294
2295 PL_op = (OP *)&slf_restore;
2296}
2297
2298/*****************************************************************************/
2299/* PerlIO::cede */
2300
2301typedef struct
2302{
2303 PerlIOBuf base;
2304 NV next, every;
2305} PerlIOCede;
2306
2307static IV
2308PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2309{
2310 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2311
2312 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2313 self->next = nvtime () + self->every;
2314
2315 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2316}
2317
2318static SV *
2319PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2320{
2321 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2322
2323 return newSVnv (self->every);
2324}
2325
2326static IV
2327PerlIOCede_flush (pTHX_ PerlIO *f)
2328{
2329 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2330 double now = nvtime ();
2331
2332 if (now >= self->next)
2333 {
2334 api_cede (aTHX);
2335 self->next = now + self->every;
2336 }
2337
2338 return PerlIOBuf_flush (aTHX_ f);
2339}
2340
2341static PerlIO_funcs PerlIO_cede =
2342{
2343 sizeof(PerlIO_funcs),
2344 "cede",
2345 sizeof(PerlIOCede),
2346 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2347 PerlIOCede_pushed,
2348 PerlIOBuf_popped,
2349 PerlIOBuf_open,
2350 PerlIOBase_binmode,
2351 PerlIOCede_getarg,
2352 PerlIOBase_fileno,
2353 PerlIOBuf_dup,
2354 PerlIOBuf_read,
2355 PerlIOBuf_unread,
2356 PerlIOBuf_write,
2357 PerlIOBuf_seek,
2358 PerlIOBuf_tell,
2359 PerlIOBuf_close,
2360 PerlIOCede_flush,
2361 PerlIOBuf_fill,
2362 PerlIOBase_eof,
2363 PerlIOBase_error,
2364 PerlIOBase_clearerr,
2365 PerlIOBase_setlinebuf,
2366 PerlIOBuf_get_base,
2367 PerlIOBuf_bufsiz,
2368 PerlIOBuf_get_ptr,
2369 PerlIOBuf_get_cnt,
2370 PerlIOBuf_set_ptrcnt,
2371};
2372
2373/*****************************************************************************/
2374/* Coro::Semaphore & Coro::Signal */
2375
2376static SV *
2377coro_waitarray_new (pTHX_ int count)
2378{
2379 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2380 AV *av = newAV ();
2381 SV **ary;
2382
2383 /* unfortunately, building manually saves memory */
2384 Newx (ary, 2, SV *);
2385 AvALLOC (av) = ary;
2386#if PERL_VERSION_ATLEAST (5,10,0)
2387 AvARRAY (av) = ary;
2388#else
2389 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2390 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2391 SvPVX ((SV *)av) = (char *)ary;
2392#endif
2393 AvMAX (av) = 1;
2394 AvFILLp (av) = 0;
2395 ary [0] = newSViv (count);
2396
2397 return newRV_noinc ((SV *)av);
2398}
2399
2400/* semaphore */
2401
2402static void
2403coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2404{
2405 SV *count_sv = AvARRAY (av)[0];
2406 IV count = SvIVX (count_sv);
2407
2408 count += adjust;
2409 SvIVX (count_sv) = count;
2410
2411 /* now wake up as many waiters as are expected to lock */
2412 while (count > 0 && AvFILLp (av) > 0)
2413 {
2414 SV *cb;
2415
2416 /* swap first two elements so we can shift a waiter */
2417 AvARRAY (av)[0] = AvARRAY (av)[1];
2418 AvARRAY (av)[1] = count_sv;
2419 cb = av_shift (av);
2420
2421 if (SvOBJECT (cb))
2422 {
2423 api_ready (aTHX_ cb);
2424 --count;
2425 }
2426 else if (SvTYPE (cb) == SVt_PVCV)
2427 {
2428 dSP;
2429 PUSHMARK (SP);
2430 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2431 PUTBACK;
2432 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2433 }
2434
2435 SvREFCNT_dec (cb);
2436 }
2437}
2438
2439static void
2440coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2441{
2442 /* call $sem->adjust (0) to possibly wake up some other waiters */
2443 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2444}
2445
2446static int
2447slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2448{
2449 AV *av = (AV *)frame->data;
2450 SV *count_sv = AvARRAY (av)[0];
2451
2452 /* if we are about to throw, don't actually acquire the lock, just throw */
2453 if (CORO_THROW)
2454 return 0;
2455 else if (SvIVX (count_sv) > 0)
2456 {
2457 SvSTATE_current->on_destroy = 0;
2458
2459 if (acquire)
2460 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2461 else
2462 coro_semaphore_adjust (aTHX_ av, 0);
2463
2464 return 0;
2465 }
2466 else
2467 {
2468 int i;
2469 /* if we were woken up but can't down, we look through the whole */
2470 /* waiters list and only add us if we aren't in there already */
2471 /* this avoids some degenerate memory usage cases */
2472
2473 for (i = 1; i <= AvFILLp (av); ++i)
2474 if (AvARRAY (av)[i] == SvRV (coro_current))
2475 return 1;
2476
2477 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2478 return 1;
2479 }
2480}
2481
2482static int
2483slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2484{
2485 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2486}
2487
2488static int
2489slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2490{
2491 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2492}
2493
2494static void
2495slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2496{
2497 AV *av = (AV *)SvRV (arg [0]);
2498
2499 if (SvIVX (AvARRAY (av)[0]) > 0)
2500 {
2501 frame->data = (void *)av;
2502 frame->prepare = prepare_nop;
2503 }
2504 else
2505 {
2506 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2507
2508 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2509 frame->prepare = prepare_schedule;
2510
2511 /* to avoid race conditions when a woken-up coro gets terminated */
2512 /* we arrange for a temporary on_destroy that calls adjust (0) */
2513 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2514 }
2515}
2516
2517static void
2518slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2519{
2520 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2521 frame->check = slf_check_semaphore_down;
2522}
2523
2524static void
2525slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 if (items >= 2)
2528 {
2529 /* callback form */
2530 AV *av = (AV *)SvRV (arg [0]);
2531 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2532
2533 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2534
2535 if (SvIVX (AvARRAY (av)[0]) > 0)
2536 coro_semaphore_adjust (aTHX_ av, 0);
2537
2538 frame->prepare = prepare_nop;
2539 frame->check = slf_check_nop;
2540 }
2541 else
2542 {
2543 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2544 frame->check = slf_check_semaphore_wait;
2545 }
2546}
2547
2548/* signal */
2549
2550static void
2551coro_signal_wake (pTHX_ AV *av, int count)
2552{
2553 SvIVX (AvARRAY (av)[0]) = 0;
2554
2555 /* now signal count waiters */
2556 while (count > 0 && AvFILLp (av) > 0)
2557 {
2558 SV *cb;
2559
2560 /* swap first two elements so we can shift a waiter */
2561 cb = AvARRAY (av)[0];
2562 AvARRAY (av)[0] = AvARRAY (av)[1];
2563 AvARRAY (av)[1] = cb;
2564
2565 cb = av_shift (av);
2566
2567 api_ready (aTHX_ cb);
2568 sv_setiv (cb, 0); /* signal waiter */
2569 SvREFCNT_dec (cb);
2570
2571 --count;
2572 }
2573}
2574
2575static int
2576slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2577{
2578 /* if we are about to throw, also stop waiting */
2579 return SvROK ((SV *)frame->data) && !CORO_THROW;
2580}
2581
2582static void
2583slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2584{
2585 AV *av = (AV *)SvRV (arg [0]);
2586
2587 if (SvIVX (AvARRAY (av)[0]))
2588 {
2589 SvIVX (AvARRAY (av)[0]) = 0;
2590 frame->prepare = prepare_nop;
2591 frame->check = slf_check_nop;
2592 }
2593 else
2594 {
2595 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2596
2597 av_push (av, waiter);
2598
2599 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2600 frame->prepare = prepare_schedule;
2601 frame->check = slf_check_signal_wait;
2602 }
2603}
2604
2605/*****************************************************************************/
2606/* Coro::AIO */
2607
2608#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2609
2610/* helper storage struct */
2611struct io_state
2612{
2613 int errorno;
2614 I32 laststype; /* U16 in 5.10.0 */
2615 int laststatval;
2616 Stat_t statcache;
2617};
2618
2619static void
2620coro_aio_callback (pTHX_ CV *cv)
2621{
2622 dXSARGS;
2623 AV *state = (AV *)GENSUB_ARG;
2624 SV *coro = av_pop (state);
2625 SV *data_sv = newSV (sizeof (struct io_state));
2626
2627 av_extend (state, items - 1);
2628
2629 sv_upgrade (data_sv, SVt_PV);
2630 SvCUR_set (data_sv, sizeof (struct io_state));
2631 SvPOK_only (data_sv);
2632
2633 {
2634 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2635
2636 data->errorno = errno;
2637 data->laststype = PL_laststype;
2638 data->laststatval = PL_laststatval;
2639 data->statcache = PL_statcache;
2640 }
2641
2642 /* now build the result vector out of all the parameters and the data_sv */
2643 {
2644 int i;
2645
2646 for (i = 0; i < items; ++i)
2647 av_push (state, SvREFCNT_inc_NN (ST (i)));
2648 }
2649
2650 av_push (state, data_sv);
2651
2652 api_ready (aTHX_ coro);
2653 SvREFCNT_dec (coro);
2654 SvREFCNT_dec ((AV *)state);
2655}
2656
2657static int
2658slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2659{
2660 AV *state = (AV *)frame->data;
2661
2662 /* if we are about to throw, return early */
2663 /* this does not cancel the aio request, but at least */
2664 /* it quickly returns */
2665 if (CORO_THROW)
2666 return 0;
2667
2668 /* one element that is an RV? repeat! */
2669 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2670 return 1;
2671
2672 /* restore status */
2673 {
2674 SV *data_sv = av_pop (state);
2675 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2676
2677 errno = data->errorno;
2678 PL_laststype = data->laststype;
2679 PL_laststatval = data->laststatval;
2680 PL_statcache = data->statcache;
2681
2682 SvREFCNT_dec (data_sv);
2683 }
2684
2685 /* push result values */
2686 {
2687 dSP;
2688 int i;
2689
2690 EXTEND (SP, AvFILLp (state) + 1);
2691 for (i = 0; i <= AvFILLp (state); ++i)
2692 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2693
2694 PUTBACK;
2695 }
2696
2697 return 0;
2698}
2699
2700static void
2701slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2702{
2703 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2704 SV *coro_hv = SvRV (coro_current);
2705 struct coro *coro = SvSTATE_hv (coro_hv);
2706
2707 /* put our coroutine id on the state arg */
2708 av_push (state, SvREFCNT_inc_NN (coro_hv));
2709
2710 /* first see whether we have a non-zero priority and set it as AIO prio */
2711 if (coro->prio)
2712 {
2713 dSP;
2714
2715 static SV *prio_cv;
2716 static SV *prio_sv;
2717
2718 if (expect_false (!prio_cv))
2719 {
2720 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2721 prio_sv = newSViv (0);
2722 }
2723
2724 PUSHMARK (SP);
2725 sv_setiv (prio_sv, coro->prio);
2726 XPUSHs (prio_sv);
2727
2728 PUTBACK;
2729 call_sv (prio_cv, G_VOID | G_DISCARD);
2730 }
2731
2732 /* now call the original request */
2733 {
2734 dSP;
2735 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2736 int i;
2737
2738 PUSHMARK (SP);
2739
2740 /* first push all args to the stack */
2741 EXTEND (SP, items + 1);
2742
2743 for (i = 0; i < items; ++i)
2744 PUSHs (arg [i]);
2745
2746 /* now push the callback closure */
2747 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2748
2749 /* now call the AIO function - we assume our request is uncancelable */
2750 PUTBACK;
2751 call_sv ((SV *)req, G_VOID | G_DISCARD);
2752 }
2753
2754 /* now that the requets is going, we loop toll we have a result */
2755 frame->data = (void *)state;
2756 frame->prepare = prepare_schedule;
2757 frame->check = slf_check_aio_req;
2758}
2759
2760static void
2761coro_aio_req_xs (pTHX_ CV *cv)
2762{
2763 dXSARGS;
2764
2765 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2766
2767 XSRETURN_EMPTY;
2768}
2769
2770/*****************************************************************************/
2771
2772#if CORO_CLONE
2773# include "clone.c"
2774#endif
1407 2775
1408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2776MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1409 2777
1410PROTOTYPES: DISABLE 2778PROTOTYPES: DISABLE
1411 2779
1412BOOT: 2780BOOT:
1413{ 2781{
1414#ifdef USE_ITHREADS 2782#ifdef USE_ITHREADS
1415 MUTEX_INIT (&coro_mutex); 2783# if CORO_PTHREAD
2784 coro_thx = PERL_GET_CONTEXT;
2785# endif
1416#endif 2786#endif
1417 BOOT_PAGESIZE; 2787 BOOT_PAGESIZE;
2788
2789 cctx_current = cctx_new_empty ();
1418 2790
1419 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2791 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1420 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2792 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2793
2794 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2795 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2796 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2797
2798 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2799 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2800 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1421 2801
1422 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2802 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1423 2803
1424 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2804 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1425 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2805 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1430 main_top_env = PL_top_env; 2810 main_top_env = PL_top_env;
1431 2811
1432 while (main_top_env->je_prev) 2812 while (main_top_env->je_prev)
1433 main_top_env = main_top_env->je_prev; 2813 main_top_env = main_top_env->je_prev;
1434 2814
2815 {
2816 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2817
2818 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2819 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2820
2821 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2822 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2823 }
2824
1435 coroapi.ver = CORO_API_VERSION; 2825 coroapi.ver = CORO_API_VERSION;
2826 coroapi.rev = CORO_API_REVISION;
2827
1436 coroapi.transfer = api_transfer; 2828 coroapi.transfer = api_transfer;
2829
2830 coroapi.sv_state = SvSTATE_;
2831 coroapi.execute_slf = api_execute_slf;
2832 coroapi.prepare_nop = prepare_nop;
2833 coroapi.prepare_schedule = prepare_schedule;
2834 coroapi.prepare_cede = prepare_cede;
2835 coroapi.prepare_cede_notself = prepare_cede_notself;
2836
2837 {
2838 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2839
2840 if (!svp) croak ("Time::HiRes is required");
2841 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2842
2843 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2844 }
1437 2845
1438 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2846 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1439} 2847}
1440 2848
1441SV * 2849SV *
1442new (char *klass, ...) 2850new (char *klass, ...)
2851 ALIAS:
2852 Coro::new = 1
1443 CODE: 2853 CODE:
1444{ 2854{
1445 struct coro *coro; 2855 struct coro *coro;
2856 MAGIC *mg;
1446 HV *hv; 2857 HV *hv;
2858 CV *cb;
1447 int i; 2859 int i;
2860
2861 if (items > 1)
2862 {
2863 cb = coro_sv_2cv (aTHX_ ST (1));
2864
2865 if (!ix)
2866 {
2867 if (CvISXSUB (cb))
2868 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2869
2870 if (!CvROOT (cb))
2871 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2872 }
2873 }
1448 2874
1449 Newz (0, coro, 1, struct coro); 2875 Newz (0, coro, 1, struct coro);
1450 coro->args = newAV (); 2876 coro->args = newAV ();
1451 coro->flags = CF_NEW; 2877 coro->flags = CF_NEW;
1452 2878
1453 if (coro_first) coro_first->prev = coro; 2879 if (coro_first) coro_first->prev = coro;
1454 coro->next = coro_first; 2880 coro->next = coro_first;
1455 coro_first = coro; 2881 coro_first = coro;
1456 2882
1457 coro->hv = hv = newHV (); 2883 coro->hv = hv = newHV ();
1458 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2884 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2885 mg->mg_flags |= MGf_DUP;
1459 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2886 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1460 2887
2888 if (items > 1)
2889 {
1461 av_extend (coro->args, items - 1); 2890 av_extend (coro->args, items - 1 + ix - 1);
2891
2892 if (ix)
2893 {
2894 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2895 cb = cv_coro_run;
2896 }
2897
2898 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2899
1462 for (i = 1; i < items; i++) 2900 for (i = 2; i < items; i++)
1463 av_push (coro->args, newSVsv (ST (i))); 2901 av_push (coro->args, newSVsv (ST (i)));
2902 }
1464} 2903}
1465 OUTPUT: 2904 OUTPUT:
1466 RETVAL 2905 RETVAL
1467 2906
1468# these not obviously related functions are all rolled into the same xs
1469# function to increase chances that they all will call transfer with the same
1470# stack offset
1471void 2907void
1472_set_stacklevel (...) 2908transfer (...)
1473 ALIAS: 2909 PROTOTYPE: $$
1474 Coro::State::transfer = 1 2910 CODE:
1475 Coro::schedule = 2 2911 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1476 Coro::cede = 3
1477 Coro::cede_notself = 4
1478 CODE:
1479{
1480 struct transfer_args ta;
1481
1482 switch (ix)
1483 {
1484 case 0:
1485 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1486 ta.next = 0;
1487 break;
1488
1489 case 1:
1490 if (items != 2)
1491 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1492
1493 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494 break;
1495
1496 case 2:
1497 prepare_schedule (aTHX_ &ta);
1498 break;
1499
1500 case 3:
1501 prepare_cede (aTHX_ &ta);
1502 break;
1503
1504 case 4:
1505 if (!prepare_cede_notself (aTHX_ &ta))
1506 XSRETURN_EMPTY;
1507
1508 break;
1509 }
1510
1511 BARRIER;
1512 TRANSFER (ta);
1513
1514 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1515 XSRETURN_YES;
1516}
1517 2912
1518bool 2913bool
1519_destroy (SV *coro_sv) 2914_destroy (SV *coro_sv)
1520 CODE: 2915 CODE:
1521 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2916 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522 OUTPUT: 2917 OUTPUT:
1523 RETVAL 2918 RETVAL
1524 2919
1525void 2920void
1526_exit (code) 2921_exit (int code)
1527 int code
1528 PROTOTYPE: $ 2922 PROTOTYPE: $
1529 CODE: 2923 CODE:
1530 _exit (code); 2924 _exit (code);
1531 2925
2926SV *
2927clone (Coro::State coro)
2928 CODE:
2929{
2930#if CORO_CLONE
2931 struct coro *ncoro = coro_clone (aTHX_ coro);
2932 MAGIC *mg;
2933 /* TODO: too much duplication */
2934 ncoro->hv = newHV ();
2935 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2936 mg->mg_flags |= MGf_DUP;
2937 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2938#else
2939 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2940#endif
2941}
2942 OUTPUT:
2943 RETVAL
2944
1532int 2945int
1533cctx_stacksize (int new_stacksize = 0) 2946cctx_stacksize (int new_stacksize = 0)
2947 PROTOTYPE: ;$
1534 CODE: 2948 CODE:
1535 RETVAL = coro_stacksize; 2949 RETVAL = cctx_stacksize;
1536 if (new_stacksize) 2950 if (new_stacksize)
2951 {
1537 coro_stacksize = new_stacksize; 2952 cctx_stacksize = new_stacksize;
2953 ++cctx_gen;
2954 }
1538 OUTPUT: 2955 OUTPUT:
1539 RETVAL 2956 RETVAL
1540 2957
1541int 2958int
2959cctx_max_idle (int max_idle = 0)
2960 PROTOTYPE: ;$
2961 CODE:
2962 RETVAL = cctx_max_idle;
2963 if (max_idle > 1)
2964 cctx_max_idle = max_idle;
2965 OUTPUT:
2966 RETVAL
2967
2968int
1542cctx_count () 2969cctx_count ()
2970 PROTOTYPE:
1543 CODE: 2971 CODE:
1544 RETVAL = cctx_count; 2972 RETVAL = cctx_count;
1545 OUTPUT: 2973 OUTPUT:
1546 RETVAL 2974 RETVAL
1547 2975
1548int 2976int
1549cctx_idle () 2977cctx_idle ()
2978 PROTOTYPE:
1550 CODE: 2979 CODE:
1551 RETVAL = cctx_idle; 2980 RETVAL = cctx_idle;
1552 OUTPUT: 2981 OUTPUT:
1553 RETVAL 2982 RETVAL
1554 2983
1555void 2984void
1556list () 2985list ()
2986 PROTOTYPE:
1557 PPCODE: 2987 PPCODE:
1558{ 2988{
1559 struct coro *coro; 2989 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next) 2990 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv) 2991 if (coro->hv)
… …
1566call (Coro::State coro, SV *coderef) 2996call (Coro::State coro, SV *coderef)
1567 ALIAS: 2997 ALIAS:
1568 eval = 1 2998 eval = 1
1569 CODE: 2999 CODE:
1570{ 3000{
1571 if (coro->mainstack) 3001 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572 { 3002 {
1573 struct coro temp; 3003 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575 3004
1576 if (!(coro->flags & CF_RUNNING)) 3005 if (!(coro->flags & CF_RUNNING))
1577 { 3006 {
3007 PUTBACK;
1578 save_perl (aTHX_ &temp); 3008 save_perl (aTHX_ &temp);
1579 load_perl (aTHX_ coro); 3009 load_perl (aTHX_ coro);
1580 } 3010 }
1581 3011
1582 { 3012 {
1583 dSP; 3013 dSP;
1584 ENTER; 3014 ENTER;
1585 SAVETMPS; 3015 SAVETMPS;
3016 PUTBACK;
3017 PUSHSTACK;
1586 PUSHMARK (SP); 3018 PUSHMARK (SP);
1587 PUTBACK; 3019
1588 if (ix) 3020 if (ix)
1589 eval_sv (coderef, 0); 3021 eval_sv (coderef, 0);
1590 else 3022 else
1591 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3023 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3024
3025 POPSTACK;
1592 SPAGAIN; 3026 SPAGAIN;
1593 FREETMPS; 3027 FREETMPS;
1594 LEAVE; 3028 LEAVE;
1595 PUTBACK; 3029 PUTBACK;
1596 } 3030 }
1597 3031
1598 if (!(coro->flags & CF_RUNNING)) 3032 if (!(coro->flags & CF_RUNNING))
1599 { 3033 {
1600 save_perl (aTHX_ coro); 3034 save_perl (aTHX_ coro);
1601 load_perl (aTHX_ &temp); 3035 load_perl (aTHX_ &temp);
3036 SPAGAIN;
1602 } 3037 }
1603 } 3038 }
1604} 3039}
1605 3040
1606SV * 3041SV *
… …
1615 RETVAL = boolSV (coro->flags & ix); 3050 RETVAL = boolSV (coro->flags & ix);
1616 OUTPUT: 3051 OUTPUT:
1617 RETVAL 3052 RETVAL
1618 3053
1619void 3054void
3055throw (Coro::State self, SV *throw = &PL_sv_undef)
3056 PROTOTYPE: $;$
3057 CODE:
3058{
3059 struct coro *current = SvSTATE_current;
3060 SV **throwp = self == current ? &CORO_THROW : &self->except;
3061 SvREFCNT_dec (*throwp);
3062 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3063}
3064
3065void
1620api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3066api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3067 PROTOTYPE: $;$
3068 C_ARGS: aTHX_ coro, flags
1621 3069
1622SV * 3070SV *
1623has_stack (Coro::State coro) 3071has_cctx (Coro::State coro)
1624 PROTOTYPE: $ 3072 PROTOTYPE: $
1625 CODE: 3073 CODE:
1626 RETVAL = boolSV (!!coro->cctx); 3074 /* maybe manage the running flag differently */
3075 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1627 OUTPUT: 3076 OUTPUT:
1628 RETVAL 3077 RETVAL
1629 3078
1630int 3079int
1631is_traced (Coro::State coro) 3080is_traced (Coro::State coro)
… …
1633 CODE: 3082 CODE:
1634 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3083 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1635 OUTPUT: 3084 OUTPUT:
1636 RETVAL 3085 RETVAL
1637 3086
1638IV 3087UV
1639rss (Coro::State coro) 3088rss (Coro::State coro)
1640 PROTOTYPE: $ 3089 PROTOTYPE: $
1641 ALIAS: 3090 ALIAS:
1642 usecount = 1 3091 usecount = 1
1643 CODE: 3092 CODE:
… …
1647 case 1: RETVAL = coro->usecount; break; 3096 case 1: RETVAL = coro->usecount; break;
1648 } 3097 }
1649 OUTPUT: 3098 OUTPUT:
1650 RETVAL 3099 RETVAL
1651 3100
3101void
3102force_cctx ()
3103 PROTOTYPE:
3104 CODE:
3105 cctx_current->idle_sp = 0;
3106
3107void
3108swap_defsv (Coro::State self)
3109 PROTOTYPE: $
3110 ALIAS:
3111 swap_defav = 1
3112 CODE:
3113 if (!self->slot)
3114 croak ("cannot swap state with coroutine that has no saved state,");
3115 else
3116 {
3117 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3118 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3119
3120 SV *tmp = *src; *src = *dst; *dst = tmp;
3121 }
3122
1652 3123
1653MODULE = Coro::State PACKAGE = Coro 3124MODULE = Coro::State PACKAGE = Coro
1654 3125
1655BOOT: 3126BOOT:
1656{ 3127{
1657 int i; 3128 int i;
1658 3129
1659 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3130 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1660 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3131 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3132 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3133 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3134 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1661 av_async_pool = get_av ("Coro::async_pool", TRUE); 3135 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3136 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3137 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3138 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1662 3139
1663 coro_current = get_sv ("Coro::current", FALSE); 3140 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1664 SvREADONLY_on (coro_current); 3141 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3142 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3143 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1665 3144
1666 coro_stash = gv_stashpv ("Coro", TRUE); 3145 coro_stash = gv_stashpv ("Coro", TRUE);
1667 3146
1668 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3147 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1669 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3148 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1670 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3149 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1671 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3150 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1674 3153
1675 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3154 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1676 coro_ready[i] = newAV (); 3155 coro_ready[i] = newAV ();
1677 3156
1678 { 3157 {
1679 SV *sv = perl_get_sv("Coro::API", 1); 3158 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1680 3159
1681 coroapi.schedule = api_schedule; 3160 coroapi.schedule = api_schedule;
3161 coroapi.schedule_to = api_schedule_to;
1682 coroapi.cede = api_cede; 3162 coroapi.cede = api_cede;
1683 coroapi.cede_notself = api_cede_notself; 3163 coroapi.cede_notself = api_cede_notself;
1684 coroapi.ready = api_ready; 3164 coroapi.ready = api_ready;
1685 coroapi.is_ready = api_is_ready; 3165 coroapi.is_ready = api_is_ready;
1686 coroapi.nready = &coro_nready; 3166 coroapi.nready = coro_nready;
1687 coroapi.current = coro_current; 3167 coroapi.current = coro_current;
1688 3168
1689 GCoroAPI = &coroapi; 3169 /*GCoroAPI = &coroapi;*/
1690 sv_setiv (sv, (IV)&coroapi); 3170 sv_setiv (sv, (IV)&coroapi);
1691 SvREADONLY_on (sv); 3171 SvREADONLY_on (sv);
1692 } 3172 }
1693} 3173}
3174
3175void
3176terminate (...)
3177 CODE:
3178 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3179
3180void
3181schedule (...)
3182 CODE:
3183 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3184
3185void
3186schedule_to (...)
3187 CODE:
3188 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3189
3190void
3191cede_to (...)
3192 CODE:
3193 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3194
3195void
3196cede (...)
3197 CODE:
3198 CORO_EXECUTE_SLF_XS (slf_init_cede);
3199
3200void
3201cede_notself (...)
3202 CODE:
3203 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3204
3205void
3206_cancel (Coro::State self)
3207 CODE:
3208 coro_state_destroy (aTHX_ self);
3209 coro_call_on_destroy (aTHX_ self);
1694 3210
1695void 3211void
1696_set_current (SV *current) 3212_set_current (SV *current)
1697 PROTOTYPE: $ 3213 PROTOTYPE: $
1698 CODE: 3214 CODE:
1699 SvREFCNT_dec (SvRV (coro_current)); 3215 SvREFCNT_dec (SvRV (coro_current));
1700 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3216 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3217
3218void
3219_set_readyhook (SV *hook)
3220 PROTOTYPE: $
3221 CODE:
3222 SvREFCNT_dec (coro_readyhook);
3223 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1701 3224
1702int 3225int
1703prio (Coro::State coro, int newprio = 0) 3226prio (Coro::State coro, int newprio = 0)
3227 PROTOTYPE: $;$
1704 ALIAS: 3228 ALIAS:
1705 nice = 1 3229 nice = 1
1706 CODE: 3230 CODE:
1707{ 3231{
1708 RETVAL = coro->prio; 3232 RETVAL = coro->prio;
… …
1723 3247
1724SV * 3248SV *
1725ready (SV *self) 3249ready (SV *self)
1726 PROTOTYPE: $ 3250 PROTOTYPE: $
1727 CODE: 3251 CODE:
1728 RETVAL = boolSV (api_ready (self)); 3252 RETVAL = boolSV (api_ready (aTHX_ self));
1729 OUTPUT: 3253 OUTPUT:
1730 RETVAL 3254 RETVAL
1731 3255
1732int 3256int
1733nready (...) 3257nready (...)
… …
1736 RETVAL = coro_nready; 3260 RETVAL = coro_nready;
1737 OUTPUT: 3261 OUTPUT:
1738 RETVAL 3262 RETVAL
1739 3263
1740void 3264void
1741throw (Coro::State self, SV *throw = &PL_sv_undef) 3265_pool_handler (...)
1742 PROTOTYPE: $;$ 3266 CODE:
1743 CODE: 3267 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1744 SvREFCNT_dec (self->throw);
1745 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1746 3268
1747# for async_pool speedup
1748void 3269void
1749_pool_1 (SV *cb) 3270async_pool (SV *cv, ...)
3271 PROTOTYPE: &@
3272 PPCODE:
3273{
3274 HV *hv = (HV *)av_pop (av_async_pool);
3275 AV *av = newAV ();
3276 SV *cb = ST (0);
3277 int i;
3278
3279 av_extend (av, items - 2);
3280 for (i = 1; i < items; ++i)
3281 av_push (av, SvREFCNT_inc_NN (ST (i)));
3282
3283 if ((SV *)hv == &PL_sv_undef)
3284 {
3285 PUSHMARK (SP);
3286 EXTEND (SP, 2);
3287 PUSHs (sv_Coro);
3288 PUSHs ((SV *)cv_pool_handler);
3289 PUTBACK;
3290 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3291 SPAGAIN;
3292
3293 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3294 }
3295
3296 {
3297 struct coro *coro = SvSTATE_hv (hv);
3298
3299 assert (!coro->invoke_cb);
3300 assert (!coro->invoke_av);
3301 coro->invoke_cb = SvREFCNT_inc (cb);
3302 coro->invoke_av = av;
3303 }
3304
3305 api_ready (aTHX_ (SV *)hv);
3306
3307 if (GIMME_V != G_VOID)
3308 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3309 else
3310 SvREFCNT_dec (hv);
3311}
3312
3313SV *
3314rouse_cb ()
3315 PROTOTYPE:
1750 CODE: 3316 CODE:
1751{ 3317 RETVAL = coro_new_rouse_cb (aTHX);
1752 struct coro *coro = SvSTATE (coro_current);
1753 HV *hv = (HV *)SvRV (coro_current);
1754 AV *defav = GvAV (PL_defgv);
1755 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1756 AV *invoke_av;
1757 int i, len;
1758
1759 if (!invoke)
1760 croak ("\3terminate\2\n");
1761
1762 SvREFCNT_dec (coro->saved_deffh);
1763 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1764
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 invoke_av = (AV *)SvRV (invoke);
1769 len = av_len (invoke_av);
1770
1771 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1772
1773 if (len > 0)
1774 {
1775 av_fill (defav, len - 1);
1776 for (i = 0; i < len; ++i)
1777 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1778 }
1779
1780 SvREFCNT_dec (invoke);
1781}
1782
1783void
1784_pool_2 (SV *cb)
1785 CODE:
1786{
1787 struct coro *coro = SvSTATE (coro_current);
1788
1789 sv_setsv (cb, &PL_sv_undef);
1790
1791 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1792 coro->saved_deffh = 0;
1793
1794 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1795 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1796 croak ("\3terminate\2\n");
1797
1798 av_clear (GvAV (PL_defgv));
1799 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1800 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1801
1802 coro->prio = 0;
1803
1804 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1805 api_trace (coro_current, 0);
1806
1807 av_push (av_async_pool, newSVsv (coro_current));
1808}
1809
1810
1811MODULE = Coro::State PACKAGE = Coro::AIO
1812
1813SV *
1814_get_state ()
1815 CODE:
1816{
1817 struct io_state *data;
1818
1819 RETVAL = newSV (sizeof (struct io_state));
1820 data = (struct io_state *)SvPVX (RETVAL);
1821 SvCUR_set (RETVAL, sizeof (struct io_state));
1822 SvPOK_only (RETVAL);
1823
1824 data->errorno = errno;
1825 data->laststype = PL_laststype;
1826 data->laststatval = PL_laststatval;
1827 data->statcache = PL_statcache;
1828}
1829 OUTPUT: 3318 OUTPUT:
1830 RETVAL 3319 RETVAL
1831 3320
1832void 3321void
1833_set_state (char *data_) 3322rouse_wait (...)
1834 PROTOTYPE: $ 3323 PROTOTYPE: ;$
3324 PPCODE:
3325 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3326
3327
3328MODULE = Coro::State PACKAGE = PerlIO::cede
3329
3330BOOT:
3331 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3332
3333
3334MODULE = Coro::State PACKAGE = Coro::Semaphore
3335
3336SV *
3337new (SV *klass, SV *count = 0)
1835 CODE: 3338 CODE:
1836{ 3339 RETVAL = sv_bless (
1837 struct io_state *data = (void *)data_; 3340 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3341 GvSTASH (CvGV (cv))
3342 );
3343 OUTPUT:
3344 RETVAL
1838 3345
1839 errno = data->errorno; 3346# helper for Coro::Channel
1840 PL_laststype = data->laststype; 3347SV *
1841 PL_laststatval = data->laststatval; 3348_alloc (int count)
1842 PL_statcache = data->statcache; 3349 CODE:
1843} 3350 RETVAL = coro_waitarray_new (aTHX_ count);
3351 OUTPUT:
3352 RETVAL
1844 3353
3354SV *
3355count (SV *self)
3356 CODE:
3357 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3358 OUTPUT:
3359 RETVAL
3360
3361void
3362up (SV *self, int adjust = 1)
3363 ALIAS:
3364 adjust = 1
3365 CODE:
3366 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3367
3368void
3369down (...)
3370 CODE:
3371 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3372
3373void
3374wait (...)
3375 CODE:
3376 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3377
3378void
3379try (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 SV *count_sv = AvARRAY (av)[0];
3384 IV count = SvIVX (count_sv);
3385
3386 if (count > 0)
3387 {
3388 --count;
3389 SvIVX (count_sv) = count;
3390 XSRETURN_YES;
3391 }
3392 else
3393 XSRETURN_NO;
3394}
3395
3396void
3397waiters (SV *self)
3398 PPCODE:
3399{
3400 AV *av = (AV *)SvRV (self);
3401 int wcount = AvFILLp (av) + 1 - 1;
3402
3403 if (GIMME_V == G_SCALAR)
3404 XPUSHs (sv_2mortal (newSViv (wcount)));
3405 else
3406 {
3407 int i;
3408 EXTEND (SP, wcount);
3409 for (i = 1; i <= wcount; ++i)
3410 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3411 }
3412}
3413
3414MODULE = Coro::State PACKAGE = Coro::Signal
3415
3416SV *
3417new (SV *klass)
3418 CODE:
3419 RETVAL = sv_bless (
3420 coro_waitarray_new (aTHX_ 0),
3421 GvSTASH (CvGV (cv))
3422 );
3423 OUTPUT:
3424 RETVAL
3425
3426void
3427wait (...)
3428 CODE:
3429 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3430
3431void
3432broadcast (SV *self)
3433 CODE:
3434{
3435 AV *av = (AV *)SvRV (self);
3436 coro_signal_wake (aTHX_ av, AvFILLp (av));
3437}
3438
3439void
3440send (SV *self)
3441 CODE:
3442{
3443 AV *av = (AV *)SvRV (self);
3444
3445 if (AvFILLp (av))
3446 coro_signal_wake (aTHX_ av, 1);
3447 else
3448 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3449}
3450
3451IV
3452awaited (SV *self)
3453 CODE:
3454 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3455 OUTPUT:
3456 RETVAL
3457
3458
3459MODULE = Coro::State PACKAGE = Coro::AnyEvent
3460
3461BOOT:
3462 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3463
3464void
3465_schedule (...)
3466 CODE:
3467{
3468 static int incede;
3469
3470 api_cede_notself (aTHX);
3471
3472 ++incede;
3473 while (coro_nready >= incede && api_cede (aTHX))
3474 ;
3475
3476 sv_setsv (sv_activity, &PL_sv_undef);
3477 if (coro_nready >= incede)
3478 {
3479 PUSHMARK (SP);
3480 PUTBACK;
3481 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3482 }
3483
3484 --incede;
3485}
3486
3487
3488MODULE = Coro::State PACKAGE = Coro::AIO
3489
3490void
3491_register (char *target, char *proto, SV *req)
3492 CODE:
3493{
3494 CV *req_cv = coro_sv_2cv (aTHX_ req);
3495 /* newXSproto doesn't return the CV on 5.8 */
3496 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3497 sv_setpv ((SV *)slf_cv, proto);
3498 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3499}
3500

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