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Comparing Coro/Coro/State.xs (file contents):
Revision 1.185 by root, Thu Oct 4 19:35:08 2007 UTC vs.
Revision 1.330 by root, Wed Nov 26 09:29:06 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
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 126#endif
92 127
93/* 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
94 * 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
95#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
96#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
97 137
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 139
100#if __GNUC__ >= 3 140#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
103#else 144#else
104# define attribute(x) 145# define attribute(x)
105# define BARRIER 146# define expect(expr,value) (expr)
147# define INLINE static
106#endif 148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
107 152
108#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
109 154
110#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
111 157
112#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
113static perl_mutex coro_mutex; 159# if CORO_PTHREAD
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
116#else
117# define LOCK (void)0
118# define UNLOCK (void)0
119#endif 161# endif
162#endif
120 163
121/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
122struct io_state
123{
124 int errorno;
125 I32 laststype;
126 int laststatval;
127 Stat_t statcache;
128};
129 165
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;
130static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 174static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
136 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
137static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
138 187
139/* async_pool helper stuff */ 188/* async_pool helper stuff */
140static SV *sv_pool_rss; 189static SV *sv_pool_rss;
141static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
142static 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;
143 199
144static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
145static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
146 202
147enum { 203enum {
… …
152 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
153 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
154}; 210};
155 211
156/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
157typedef struct coro_cctx { 213typedef struct coro_cctx
214{
158 struct coro_cctx *next; 215 struct coro_cctx *next;
159 216
160 /* the stack */ 217 /* the stack */
161 void *sptr; 218 void *sptr;
162 size_t ssize; 219 size_t ssize;
… …
165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166 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 */
167 JMPENV *top_env; 224 JMPENV *top_env;
168 coro_context cctx; 225 coro_context cctx;
169 226
227 U32 gen;
170#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
171 int valgrind_id; 229 int valgrind_id;
172#endif 230#endif
173 unsigned char flags; 231 unsigned char flags;
174} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
175 237
176enum { 238enum {
177 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
178 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
179 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
180 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181}; 243};
182 244
183/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
184struct coro { 246typedef struct
185 /* the c coroutine allocated to this perl coroutine, if any */ 247{
186 coro_cctx *cctx; 248 SV *defsv;
187 249 AV *defav;
188 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
189 AV *args; 251 SV *irsgv;
190 int refcnt; 252 HV *hinthv;
191 int flags; /* CF_ flags */
192
193 /* optionally saved, might be zero */
194 AV *defav; /* @_ */
195 SV *defsv; /* $_ */
196 SV *errsv; /* $@ */
197 SV *deffh; /* default filehandle */
198 SV *irssv; /* $/ */
199 SV *irssv_sv; /* real $/ cache */
200
201#define VAR(name,type) type name; 253#define VAR(name,type) type name;
202# include "state.h" 254# include "state.h"
203#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);
204 276
205 /* statistics */ 277 /* statistics */
206 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
207 279
208 /* coro process data */ 280 /* coro process data */
209 int prio; 281 int prio;
210 //SV *throw; 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
211 284
212 /* async_pool */ 285 /* async_pool */
213 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
214 289
215 /* linked list */ 290 /* linked list */
216 struct coro *next, *prev; 291 struct coro *next, *prev;
217 HV *hv; /* the perl hash associated with this coro, if any */
218}; 292};
219 293
220typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
221typedef 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 */
222 301
223/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
224 303
225#define PRIO_MAX 3 304#define PRIO_MAX 3
226#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
229#define PRIO_IDLE -3 308#define PRIO_IDLE -3
230#define PRIO_MIN -4 309#define PRIO_MIN -4
231 310
232/* for Coro.pm */ 311/* for Coro.pm */
233static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
234static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
235static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
236static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
237 318
238/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
239 320
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
240static 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
360static AV *
241coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
242{ 362{
243 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
244 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
245 365
246 newpadlist = newAV (); 366 newpadlist = newAV ();
247 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
248#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
249 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250#else 370#else
251 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252#endif 372#endif
253 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254 --AvFILLp (padlist); 374 --AvFILLp (padlist);
255 375
256 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
258 378
259 return newpadlist; 379 return newpadlist;
260} 380}
261 381
… …
266 if (SvREFCNT (padlist)) 386 if (SvREFCNT (padlist))
267 { 387 {
268 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
269 while (i >= 0) 389 while (i >= 0)
270 { 390 {
271 SV **svp = av_fetch (padlist, i--, FALSE); 391 SV **svp = AvARRAY (padlist)[i--];
272 if (svp) 392 if (svp)
273 { 393 {
274 SV *sv; 394 AvREAL_on (*svp);
275 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
276 SvREFCNT_dec (sv); 395 av_undef (*svp);
277
278 SvREFCNT_dec (*svp); 396 SvREFCNT_dec (*svp);
279 } 397 }
280 } 398 }
281 399
282 SvREFCNT_dec ((SV*)padlist); 400 SvREFCNT_dec ((SV*)padlist);
… …
291 409
292 /* casting is fun. */ 410 /* casting is fun. */
293 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294 free_padlist (aTHX_ padlist); 412 free_padlist (aTHX_ padlist);
295 413
296 SvREFCNT_dec (av); 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297 415
298 return 0; 416 return 0;
299} 417}
300 418
419#define CORO_MAGIC_type_cv 26
301#define PERL_MAGIC_coro PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
302 421
303static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 422static MGVTBL coro_cv_vtbl = {
423 0, 0, 0, 0,
424 coro_cv_free
425};
304 426
305#define CORO_MAGIC(cv) \ 427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
306 SvMAGIC (cv) \ 429 ? SvMAGIC (sv) \
307 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 430 : mg_find (sv, type))
308 ? SvMAGIC (cv) \ 431
309 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 432#define CORO_MAGIC(sv, type) \
433 (expect_true (SvMAGIC (sv)) \
434 ? CORO_MAGIC_NN (sv, type) \
310 : 0 435 : 0)
311 436
312static struct coro * 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
439
440INLINE struct coro *
313SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
314{ 442{
315 HV *stash; 443 HV *stash;
316 MAGIC *mg; 444 MAGIC *mg;
317 445
318 if (SvROK (coro)) 446 if (SvROK (coro))
319 coro = SvRV (coro); 447 coro = SvRV (coro);
320 448
321 if (SvTYPE (coro) != SVt_PVHV) 449 if (expect_false (SvTYPE (coro) != SVt_PVHV))
322 croak ("Coro::State object required"); 450 croak ("Coro::State object required");
323 451
324 stash = SvSTASH (coro); 452 stash = SvSTASH (coro);
325 if (stash != coro_stash && stash != coro_state_stash) 453 if (expect_false (stash != coro_stash && stash != coro_state_stash))
326 { 454 {
327 /* very slow, but rare, check */ 455 /* very slow, but rare, check */
328 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 456 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329 croak ("Coro::State object required"); 457 croak ("Coro::State object required");
330 } 458 }
331 459
332 mg = CORO_MAGIC (coro); 460 mg = CORO_MAGIC_state (coro);
333 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
334} 462}
335 463
336#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337 465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
469
338/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
339static void 471static void
340get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
341{ 473{
342 MAGIC *mg = CORO_MAGIC (cv); 474 MAGIC *mg = CORO_MAGIC_cv (cv);
343 AV *av; 475 AV *av;
344 476
345 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347 else 479 else
348 { 480 {
349#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
350 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
351 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
352 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
353 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
354 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
355#else 488#else
356 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
357#endif 490#endif
358 } 491 }
359} 492}
360 493
361static void 494static void
362put_padlist (pTHX_ CV *cv) 495put_padlist (pTHX_ CV *cv)
363{ 496{
364 MAGIC *mg = CORO_MAGIC (cv); 497 MAGIC *mg = CORO_MAGIC_cv (cv);
365 AV *av; 498 AV *av;
366 499
367 if (!mg) 500 if (expect_false (!mg))
368 { 501 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371 mg->mg_virtual = &vtbl_coro;
372 mg->mg_obj = (SV *)newAV ();
373 }
374 502
375 av = (AV *)mg->mg_obj; 503 av = (AV *)mg->mg_obj;
376 504
377 if (AvFILLp (av) >= AvMAX (av)) 505 if (expect_false (AvFILLp (av) >= AvMAX (av)))
378 av_extend (av, AvMAX (av) + 1); 506 av_extend (av, AvFILLp (av) + 1);
379 507
380 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 508 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381} 509}
382 510
383/** load & save, init *******************************************************/ 511/** load & save, init *******************************************************/
384 512
385static void 513static void
386load_perl (pTHX_ Coro__State c) 514load_perl (pTHX_ Coro__State c)
387{ 515{
516 perl_slots *slot = c->slot;
517 c->slot = 0;
518
519 PL_mainstack = c->mainstack;
520
521 GvSV (PL_defgv) = slot->defsv;
522 GvAV (PL_defgv) = slot->defav;
523 GvSV (PL_errgv) = slot->errsv;
524 GvSV (irsgv) = slot->irsgv;
525 GvHV (PL_hintgv) = slot->hinthv;
526
388#define VAR(name,type) PL_ ## name = c->name; 527 #define VAR(name,type) PL_ ## name = slot->name;
389# include "state.h" 528 # include "state.h"
390#undef VAR 529 #undef VAR
391
392 GvSV (PL_defgv) = c->defsv;
393 GvAV (PL_defgv) = c->defav;
394 GvSV (PL_errgv) = c->errsv;
395 GvSV (irsgv) = c->irssv_sv;
396 530
397 { 531 {
398 dSP; 532 dSP;
533
399 CV *cv; 534 CV *cv;
400 535
401 /* now do the ugly restore mess */ 536 /* now do the ugly restore mess */
402 while ((cv = (CV *)POPs)) 537 while (expect_true (cv = (CV *)POPs))
403 { 538 {
404 put_padlist (aTHX_ cv); /* mark this padlist as available */ 539 put_padlist (aTHX_ cv); /* mark this padlist as available */
405 CvDEPTH (cv) = PTR2IV (POPs); 540 CvDEPTH (cv) = PTR2IV (POPs);
406 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
407 } 542 }
408 543
409 PUTBACK; 544 PUTBACK;
410 } 545 }
546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
411} 549}
412 550
413static void 551static void
414save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
415{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
416 { 557 {
417 dSP; 558 dSP;
418 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
419 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
420 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
426 567
427 XPUSHs (Nullsv); 568 XPUSHs (Nullsv);
428 /* this loop was inspired by pp_caller */ 569 /* this loop was inspired by pp_caller */
429 for (;;) 570 for (;;)
430 { 571 {
431 while (cxix >= 0) 572 while (expect_true (cxix >= 0))
432 { 573 {
433 PERL_CONTEXT *cx = &ccstk[cxix--]; 574 PERL_CONTEXT *cx = &ccstk[cxix--];
434 575
435 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 576 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
436 { 577 {
437 CV *cv = cx->blk_sub.cv; 578 CV *cv = cx->blk_sub.cv;
438 579
439 if (CvDEPTH (cv)) 580 if (expect_true (CvDEPTH (cv)))
440 { 581 {
441 EXTEND (SP, 3); 582 EXTEND (SP, 3);
442 PUSHs ((SV *)CvPADLIST (cv)); 583 PUSHs ((SV *)CvPADLIST (cv));
443 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 584 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
444 PUSHs ((SV *)cv); 585 PUSHs ((SV *)cv);
445 586
446 CvDEPTH (cv) = 0; 587 CvDEPTH (cv) = 0;
447 get_padlist (aTHX_ cv); 588 get_padlist (aTHX_ cv);
448 } 589 }
449 } 590 }
450 } 591 }
451 592
452 if (top_si->si_type == PERLSI_MAIN) 593 if (expect_true (top_si->si_type == PERLSI_MAIN))
453 break; 594 break;
454 595
455 top_si = top_si->si_prev; 596 top_si = top_si->si_prev;
456 ccstk = top_si->si_cxstack; 597 ccstk = top_si->si_cxstack;
457 cxix = top_si->si_cxix; 598 cxix = top_si->si_cxix;
458 } 599 }
459 600
460 PUTBACK; 601 PUTBACK;
461 } 602 }
462 603
604 /* allocate some space on the context stack for our purposes */
605 /* we manually unroll here, as usually 2 slots is enough */
606 if (SLOT_COUNT >= 1) CXINC;
607 if (SLOT_COUNT >= 2) CXINC;
608 if (SLOT_COUNT >= 3) CXINC;
609 {
610 int i;
611 for (i = 3; i < SLOT_COUNT; ++i)
612 CXINC;
613 }
614 cxstack_ix -= SLOT_COUNT; /* undo allocation */
615
616 c->mainstack = PL_mainstack;
617
618 {
619 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
620
463 c->defav = GvAV (PL_defgv); 621 slot->defav = GvAV (PL_defgv);
464 c->defsv = DEFSV; 622 slot->defsv = DEFSV;
465 c->errsv = ERRSV; 623 slot->errsv = ERRSV;
466 c->irssv_sv = GvSV (irsgv); 624 slot->irsgv = GvSV (irsgv);
625 slot->hinthv = GvHV (PL_hintgv);
467 626
468#define VAR(name,type)c->name = PL_ ## name; 627 #define VAR(name,type) slot->name = PL_ ## name;
469# include "state.h" 628 # include "state.h"
470#undef VAR 629 #undef VAR
630 }
471} 631}
472 632
473/* 633/*
474 * allocate various perl stacks. This is an exact copy 634 * allocate various perl stacks. This is almost an exact copy
475 * of perl.c:init_stacks, except that it uses less memory 635 * of perl.c:init_stacks, except that it uses less memory
476 * on the (sometimes correct) assumption that coroutines do 636 * on the (sometimes correct) assumption that coroutines do
477 * not usually need a lot of stackspace. 637 * not usually need a lot of stackspace.
478 */ 638 */
479#if CORO_PREFER_PERL_FUNCTIONS 639#if CORO_PREFER_PERL_FUNCTIONS
480# define coro_init_stacks init_stacks 640# define coro_init_stacks(thx) init_stacks ()
481#else 641#else
482static void 642static void
483coro_init_stacks (pTHX) 643coro_init_stacks (pTHX)
484{ 644{
485 PL_curstackinfo = new_stackinfo(64, 6); 645 PL_curstackinfo = new_stackinfo(32, 8);
486 PL_curstackinfo->si_type = PERLSI_MAIN; 646 PL_curstackinfo->si_type = PERLSI_MAIN;
487 PL_curstack = PL_curstackinfo->si_stack; 647 PL_curstack = PL_curstackinfo->si_stack;
488 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 648 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
489 649
490 PL_stack_base = AvARRAY(PL_curstack); 650 PL_stack_base = AvARRAY(PL_curstack);
491 PL_stack_sp = PL_stack_base; 651 PL_stack_sp = PL_stack_base;
492 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 652 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
493 653
494 New(50,PL_tmps_stack,64,SV*); 654 New(50,PL_tmps_stack,32,SV*);
495 PL_tmps_floor = -1; 655 PL_tmps_floor = -1;
496 PL_tmps_ix = -1; 656 PL_tmps_ix = -1;
497 PL_tmps_max = 64; 657 PL_tmps_max = 32;
498 658
499 New(54,PL_markstack,16,I32); 659 New(54,PL_markstack,16,I32);
500 PL_markstack_ptr = PL_markstack; 660 PL_markstack_ptr = PL_markstack;
501 PL_markstack_max = PL_markstack + 16; 661 PL_markstack_max = PL_markstack + 16;
502 662
503#ifdef SET_MARK_OFFSET 663#ifdef SET_MARK_OFFSET
504 SET_MARK_OFFSET; 664 SET_MARK_OFFSET;
505#endif 665#endif
506 666
507 New(54,PL_scopestack,16,I32); 667 New(54,PL_scopestack,8,I32);
508 PL_scopestack_ix = 0; 668 PL_scopestack_ix = 0;
509 PL_scopestack_max = 16; 669 PL_scopestack_max = 8;
510 670
511 New(54,PL_savestack,64,ANY); 671 New(54,PL_savestack,24,ANY);
512 PL_savestack_ix = 0; 672 PL_savestack_ix = 0;
513 PL_savestack_max = 64; 673 PL_savestack_max = 24;
514 674
515#if !PERL_VERSION_ATLEAST (5,9,0) 675#if !PERL_VERSION_ATLEAST (5,10,0)
516 New(54,PL_retstack,4,OP*); 676 New(54,PL_retstack,4,OP*);
517 PL_retstack_ix = 0; 677 PL_retstack_ix = 0;
518 PL_retstack_max = 4; 678 PL_retstack_max = 4;
519#endif 679#endif
520} 680}
… …
522 682
523/* 683/*
524 * destroy the stacks, the callchain etc... 684 * destroy the stacks, the callchain etc...
525 */ 685 */
526static void 686static void
527coro_destroy_stacks (pTHX) 687coro_destruct_stacks (pTHX)
528{ 688{
529 while (PL_curstackinfo->si_next) 689 while (PL_curstackinfo->si_next)
530 PL_curstackinfo = PL_curstackinfo->si_next; 690 PL_curstackinfo = PL_curstackinfo->si_next;
531 691
532 while (PL_curstackinfo) 692 while (PL_curstackinfo)
… …
543 703
544 Safefree (PL_tmps_stack); 704 Safefree (PL_tmps_stack);
545 Safefree (PL_markstack); 705 Safefree (PL_markstack);
546 Safefree (PL_scopestack); 706 Safefree (PL_scopestack);
547 Safefree (PL_savestack); 707 Safefree (PL_savestack);
548#if !PERL_VERSION_ATLEAST (5,9,0) 708#if !PERL_VERSION_ATLEAST (5,10,0)
549 Safefree (PL_retstack); 709 Safefree (PL_retstack);
550#endif 710#endif
551} 711}
712
713#define CORO_RSS \
714 rss += sizeof (SYM (curstackinfo)); \
715 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
716 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
717 rss += SYM (tmps_max) * sizeof (SV *); \
718 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
719 rss += SYM (scopestack_max) * sizeof (I32); \
720 rss += SYM (savestack_max) * sizeof (ANY);
552 721
553static size_t 722static size_t
554coro_rss (pTHX_ struct coro *coro) 723coro_rss (pTHX_ struct coro *coro)
555{ 724{
556 size_t rss = sizeof (*coro); 725 size_t rss = sizeof (*coro);
557 726
558 if (coro->mainstack) 727 if (coro->mainstack)
559 { 728 {
560 if (coro->flags & CF_RUNNING) 729 if (coro->flags & CF_RUNNING)
561 { 730 {
562 #define VAR(name,type)coro->name = PL_ ## name; 731 #define SYM(sym) PL_ ## sym
563 # include "state.h" 732 CORO_RSS;
564 #undef VAR 733 #undef SYM
565 } 734 }
566 735 else
567 rss += sizeof (coro->curstackinfo); 736 {
568 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 737 #define SYM(sym) coro->slot->sym
569 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 738 CORO_RSS;
570 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 739 #undef SYM
571 rss += coro->tmps_max * sizeof (SV *); 740 }
572 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
573 rss += coro->scopestack_max * sizeof (I32);
574 rss += coro->savestack_max * sizeof (ANY);
575
576#if !PERL_VERSION_ATLEAST (5,9,0)
577 rss += coro->retstack_max * sizeof (OP *);
578#endif
579 } 741 }
580 742
581 return rss; 743 return rss;
582} 744}
583 745
584/** coroutine stack handling ************************************************/ 746/** coroutine stack handling ************************************************/
585 747
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
750static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
751
752/* apparently < 5.8.8 */
753#ifndef MgPV_nolen_const
754#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
755 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
756 (const char*)(mg)->mg_ptr)
757#endif
758
759/*
760 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide
763 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */
586static void 768static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{
771 const char *s = MgPV_nolen_const (mg);
772
773 if (*s == '_')
774 {
775 SV **svp = 0;
776
777 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
778 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
779
780 if (svp)
781 {
782 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = 0;
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
812}
813
814static int
815coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
816{
817 const char *s = MgPV_nolen_const (mg);
818
819 if (*s == '_')
820 {
821 SV **svp = 0;
822
823 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825
826 if (svp)
827 {
828 SV *old = *svp;
829 *svp = newSVsv (sv);
830 SvREFCNT_dec (old);
831 return 0;
832 }
833 }
834
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836}
837
838static void
839prepare_nop (pTHX_ struct coro_transfer_args *ta)
840{
841 /* kind of mega-hacky, but works */
842 ta->next = ta->prev = (struct coro *)ta;
843}
844
845static int
846slf_check_nop (pTHX_ struct CoroSLF *frame)
847{
848 return 0;
849}
850
851static int
852slf_check_repeat (pTHX_ struct CoroSLF *frame)
853{
854 return 1;
855}
856
857static UNOP coro_setup_op;
858
859static void NOINLINE /* noinline to keep it out of the transfer fast path */
587coro_setup (pTHX_ struct coro *coro) 860coro_setup (pTHX_ struct coro *coro)
588{ 861{
589 /* 862 /*
590 * emulate part of the perl startup here. 863 * emulate part of the perl startup here.
591 */ 864 */
… …
593 866
594 PL_runops = RUNOPS_DEFAULT; 867 PL_runops = RUNOPS_DEFAULT;
595 PL_curcop = &PL_compiling; 868 PL_curcop = &PL_compiling;
596 PL_in_eval = EVAL_NULL; 869 PL_in_eval = EVAL_NULL;
597 PL_comppad = 0; 870 PL_comppad = 0;
871 PL_comppad_name = 0;
872 PL_comppad_name_fill = 0;
873 PL_comppad_name_floor = 0;
598 PL_curpm = 0; 874 PL_curpm = 0;
875 PL_curpad = 0;
599 PL_localizing = 0; 876 PL_localizing = 0;
600 PL_dirty = 0; 877 PL_dirty = 0;
601 PL_restartop = 0; 878 PL_restartop = 0;
879#if PERL_VERSION_ATLEAST (5,10,0)
880 PL_parser = 0;
881#endif
882 PL_hints = 0;
883
884 /* recreate the die/warn hooks */
885 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
886 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
602 887
603 GvSV (PL_defgv) = NEWSV (0, 0); 888 GvSV (PL_defgv) = newSV (0);
604 GvAV (PL_defgv) = coro->args; coro->args = 0; 889 GvAV (PL_defgv) = coro->args; coro->args = 0;
605 GvSV (PL_errgv) = NEWSV (0, 0); 890 GvSV (PL_errgv) = newSV (0);
606 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 891 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
892 GvHV (PL_hintgv) = 0;
607 PL_rs = newSVsv (GvSV (irsgv)); 893 PL_rs = newSVsv (GvSV (irsgv));
608 894 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
609 {
610 IO *io = newIO ();
611 PL_defoutgv = newGVgen ("Coro");
612 GvIOp(PL_defoutgv) = io;
613 IoTYPE (io) = IoTYPE_WRONLY;
614 IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
615 IoFLAGS (io) |= IOf_FLUSH;
616 }
617 895
618 { 896 {
619 dSP; 897 dSP;
620 LOGOP myop; 898 UNOP myop;
621 899
622 Zero (&myop, 1, LOGOP); 900 Zero (&myop, 1, UNOP);
623 myop.op_next = Nullop; 901 myop.op_next = Nullop;
902 myop.op_type = OP_ENTERSUB;
624 myop.op_flags = OPf_WANT_VOID; 903 myop.op_flags = OPf_WANT_VOID;
625 904
626 PUSHMARK (SP); 905 PUSHMARK (SP);
627 XPUSHs (av_shift (GvAV (PL_defgv))); 906 PUSHs ((SV *)coro->startcv);
628 PUTBACK; 907 PUTBACK;
629 PL_op = (OP *)&myop; 908 PL_op = (OP *)&myop;
630 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 909 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
631 SPAGAIN;
632 } 910 }
633 911
634 ENTER; /* necessary e.g. for dounwind */ 912 /* this newly created coroutine might be run on an existing cctx which most
635} 913 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
914 */
915 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
916 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
636 917
918 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
919 coro_setup_op.op_next = PL_op;
920 coro_setup_op.op_type = OP_ENTERSUB;
921 coro_setup_op.op_ppaddr = pp_slf;
922 /* no flags etc. required, as an init function won't be called */
923
924 PL_op = (OP *)&coro_setup_op;
925
926 /* copy throw, in case it was set before coro_setup */
927 CORO_THROW = coro->except;
928}
929
637static void 930static void
638coro_destroy (pTHX_ struct coro *coro) 931coro_destruct (pTHX_ struct coro *coro)
639{ 932{
640 if (!IN_DESTRUCT) 933 if (!IN_DESTRUCT)
641 { 934 {
642 /* restore all saved variables and stuff */ 935 /* restore all saved variables and stuff */
643 LEAVE_SCOPE (0); 936 LEAVE_SCOPE (0);
… …
658 SvREFCNT_dec (GvAV (PL_defgv)); 951 SvREFCNT_dec (GvAV (PL_defgv));
659 SvREFCNT_dec (GvSV (PL_errgv)); 952 SvREFCNT_dec (GvSV (PL_errgv));
660 SvREFCNT_dec (PL_defoutgv); 953 SvREFCNT_dec (PL_defoutgv);
661 SvREFCNT_dec (PL_rs); 954 SvREFCNT_dec (PL_rs);
662 SvREFCNT_dec (GvSV (irsgv)); 955 SvREFCNT_dec (GvSV (irsgv));
956 SvREFCNT_dec (GvHV (PL_hintgv));
663 957
958 SvREFCNT_dec (PL_diehook);
959 SvREFCNT_dec (PL_warnhook);
960
664 SvREFCNT_dec (coro->saved_deffh); 961 SvREFCNT_dec (coro->saved_deffh);
665 //SvREFCNT_dec (coro->throw); 962 SvREFCNT_dec (coro->rouse_cb);
963 SvREFCNT_dec (coro->invoke_cb);
964 SvREFCNT_dec (coro->invoke_av);
666 965
667 coro_destroy_stacks (aTHX); 966 coro_destruct_stacks (aTHX);
668} 967}
669 968
670static void 969INLINE void
671free_coro_mortal (pTHX) 970free_coro_mortal (pTHX)
672{ 971{
673 if (coro_mortal) 972 if (expect_true (coro_mortal))
674 { 973 {
675 SvREFCNT_dec (coro_mortal); 974 SvREFCNT_dec (coro_mortal);
676 coro_mortal = 0; 975 coro_mortal = 0;
677 } 976 }
678} 977}
… …
680static int 979static int
681runops_trace (pTHX) 980runops_trace (pTHX)
682{ 981{
683 COP *oldcop = 0; 982 COP *oldcop = 0;
684 int oldcxix = -2; 983 int oldcxix = -2;
685 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
686 coro_cctx *cctx = coro->cctx;
687 984
688 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 985 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
689 { 986 {
690 PERL_ASYNC_CHECK (); 987 PERL_ASYNC_CHECK ();
691 988
692 if (cctx->flags & CC_TRACE_ALL) 989 if (cctx_current->flags & CC_TRACE_ALL)
693 { 990 {
694 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 991 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
695 { 992 {
696 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 993 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
697 SV **bot, **top; 994 SV **bot, **top;
698 AV *av = newAV (); /* return values */ 995 AV *av = newAV (); /* return values */
699 SV **cb; 996 SV **cb;
… …
707 bot = PL_stack_base + cx->blk_oldsp + 1; 1004 bot = PL_stack_base + cx->blk_oldsp + 1;
708 top = cx->blk_gimme == G_ARRAY ? SP + 1 1005 top = cx->blk_gimme == G_ARRAY ? SP + 1
709 : cx->blk_gimme == G_SCALAR ? bot + 1 1006 : cx->blk_gimme == G_SCALAR ? bot + 1
710 : bot; 1007 : bot;
711 1008
1009 av_extend (av, top - bot);
712 while (bot < top) 1010 while (bot < top)
713 av_push (av, SvREFCNT_inc (*bot++)); 1011 av_push (av, SvREFCNT_inc_NN (*bot++));
714 1012
715 PL_runops = RUNOPS_DEFAULT; 1013 PL_runops = RUNOPS_DEFAULT;
716 ENTER; 1014 ENTER;
717 SAVETMPS; 1015 SAVETMPS;
718 EXTEND (SP, 3); 1016 EXTEND (SP, 3);
… …
735 1033
736 if (PL_curcop != &PL_compiling) 1034 if (PL_curcop != &PL_compiling)
737 { 1035 {
738 SV **cb; 1036 SV **cb;
739 1037
740 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1038 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
741 { 1039 {
742 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1040 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
743 1041
744 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1042 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
745 { 1043 {
746 runops_proc_t old_runops = PL_runops;
747 dSP; 1044 dSP;
748 GV *gv = CvGV (cx->blk_sub.cv); 1045 GV *gv = CvGV (cx->blk_sub.cv);
749 SV *fullname = sv_2mortal (newSV (0)); 1046 SV *fullname = sv_2mortal (newSV (0));
750 1047
751 if (isGV (gv)) 1048 if (isGV (gv))
… …
756 SAVETMPS; 1053 SAVETMPS;
757 EXTEND (SP, 3); 1054 EXTEND (SP, 3);
758 PUSHMARK (SP); 1055 PUSHMARK (SP);
759 PUSHs (&PL_sv_yes); 1056 PUSHs (&PL_sv_yes);
760 PUSHs (fullname); 1057 PUSHs (fullname);
761 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1058 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
762 PUTBACK; 1059 PUTBACK;
763 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1060 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
764 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1061 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
765 SPAGAIN; 1062 SPAGAIN;
766 FREETMPS; 1063 FREETMPS;
… …
769 } 1066 }
770 1067
771 oldcxix = cxstack_ix; 1068 oldcxix = cxstack_ix;
772 } 1069 }
773 1070
774 if (cctx->flags & CC_TRACE_LINE) 1071 if (cctx_current->flags & CC_TRACE_LINE)
775 { 1072 {
776 dSP; 1073 dSP;
777 1074
778 PL_runops = RUNOPS_DEFAULT; 1075 PL_runops = RUNOPS_DEFAULT;
779 ENTER; 1076 ENTER;
… …
798 1095
799 TAINT_NOT; 1096 TAINT_NOT;
800 return 0; 1097 return 0;
801} 1098}
802 1099
803/* inject a fake call to Coro::State::_cctx_init into the execution */ 1100static struct CoroSLF cctx_ssl_frame;
804/* _cctx_init should be careful, as it could be called at almost any time */ 1101
805/* during execution of a perl program */ 1102static void
1103slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1104{
1105 ta->prev = 0;
1106}
1107
1108static int
1109slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1110{
1111 *frame = cctx_ssl_frame;
1112
1113 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1114}
1115
1116/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
806static void NOINLINE 1117static void NOINLINE
807prepare_cctx (pTHX_ coro_cctx *cctx) 1118cctx_prepare (pTHX)
808{ 1119{
809 dSP;
810 LOGOP myop;
811
812 PL_top_env = &PL_start_env; 1120 PL_top_env = &PL_start_env;
813 1121
814 if (cctx->flags & CC_TRACE) 1122 if (cctx_current->flags & CC_TRACE)
815 PL_runops = runops_trace; 1123 PL_runops = runops_trace;
816 1124
817 Zero (&myop, 1, LOGOP); 1125 /* we already must be executing an SLF op, there is no other valid way
818 myop.op_next = PL_op; 1126 * that can lead to creation of a new cctx */
819 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1127 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1128 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
820 1129
821 PUSHMARK (SP); 1130 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
822 EXTEND (SP, 2); 1131 cctx_ssl_frame = slf_frame;
823 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1132
824 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1133 slf_frame.prepare = slf_prepare_set_stacklevel;
825 PUTBACK; 1134 slf_frame.check = slf_check_set_stacklevel;
826 PL_op = (OP *)&myop; 1135}
827 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1136
828 SPAGAIN; 1137/* the tail of transfer: execute stuff we can only do after a transfer */
1138INLINE void
1139transfer_tail (pTHX)
1140{
1141 free_coro_mortal (aTHX);
829} 1142}
830 1143
831/* 1144/*
832 * this is a _very_ stripped down perl interpreter ;) 1145 * this is a _very_ stripped down perl interpreter ;)
833 */ 1146 */
834static void 1147static void
835coro_run (void *arg) 1148cctx_run (void *arg)
836{ 1149{
1150#ifdef USE_ITHREADS
1151# if CORO_PTHREAD
1152 PERL_SET_CONTEXT (coro_thx);
1153# endif
1154#endif
1155 {
837 dTHX; 1156 dTHX;
838 1157
839 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1158 /* normally we would need to skip the entersub here */
840 UNLOCK; 1159 /* not doing so will re-execute it, which is exactly what we want */
841
842 /* we now skip the entersub that lead to transfer() */
843 PL_op = PL_op->op_next; 1160 /* PL_nop = PL_nop->op_next */
844 1161
845 /* inject a fake subroutine call to cctx_init */ 1162 /* inject a fake subroutine call to cctx_init */
846 prepare_cctx (aTHX_ (coro_cctx *)arg); 1163 cctx_prepare (aTHX);
847 1164
1165 /* cctx_run is the alternative tail of transfer() */
1166 transfer_tail (aTHX);
1167
848 /* somebody or something will hit me for both perl_run and PL_restartop */ 1168 /* somebody or something will hit me for both perl_run and PL_restartop */
849 PL_restartop = PL_op; 1169 PL_restartop = PL_op;
850 perl_run (PL_curinterp); 1170 perl_run (PL_curinterp);
851
852 /* 1171 /*
1172 * Unfortunately, there is no way to get at the return values of the
1173 * coro body here, as perl_run destroys these
1174 */
1175
1176 /*
853 * If perl-run returns we assume exit() was being called or the coro 1177 * If perl-run returns we assume exit() was being called or the coro
854 * fell off the end, which seems to be the only valid (non-bug) 1178 * fell off the end, which seems to be the only valid (non-bug)
855 * reason for perl_run to return. We try to exit by jumping to the 1179 * reason for perl_run to return. We try to exit by jumping to the
856 * bootstrap-time "top" top_env, as we cannot restore the "main" 1180 * bootstrap-time "top" top_env, as we cannot restore the "main"
857 * coroutine as Coro has no such concept 1181 * coroutine as Coro has no such concept.
1182 * This actually isn't valid with the pthread backend, but OSes requiring
1183 * that backend are too broken to do it in a standards-compliant way.
858 */ 1184 */
859 PL_top_env = main_top_env; 1185 PL_top_env = main_top_env;
860 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 }
861} 1188}
862 1189
863static coro_cctx * 1190static coro_cctx *
864cctx_new () 1191cctx_new ()
865{ 1192{
866 coro_cctx *cctx; 1193 coro_cctx *cctx;
1194
1195 ++cctx_count;
1196 New (0, cctx, 1, coro_cctx);
1197
1198 cctx->gen = cctx_gen;
1199 cctx->flags = 0;
1200 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1201
1202 return cctx;
1203}
1204
1205/* create a new cctx only suitable as source */
1206static coro_cctx *
1207cctx_new_empty ()
1208{
1209 coro_cctx *cctx = cctx_new ();
1210
1211 cctx->sptr = 0;
1212 coro_create (&cctx->cctx, 0, 0, 0, 0);
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx suitable as destination/running a perl interpreter */
1218static coro_cctx *
1219cctx_new_run ()
1220{
1221 coro_cctx *cctx = cctx_new ();
867 void *stack_start; 1222 void *stack_start;
868 size_t stack_size; 1223 size_t stack_size;
869 1224
870 ++cctx_count;
871
872 Newz (0, cctx, 1, coro_cctx);
873
874#if HAVE_MMAP 1225#if HAVE_MMAP
875
876 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1226 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
877 /* mmap supposedly does allocate-on-write for us */ 1227 /* mmap supposedly does allocate-on-write for us */
878 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
879 1229
880 if (cctx->sptr != (void *)-1) 1230 if (cctx->sptr != (void *)-1)
881 { 1231 {
882# if CORO_STACKGUARD 1232 #if CORO_STACKGUARD
883 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
884# endif 1234 #endif
885 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
886 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
887 cctx->flags |= CC_MAPPED; 1237 cctx->flags |= CC_MAPPED;
888 } 1238 }
889 else 1239 else
890#endif 1240#endif
891 { 1241 {
892 cctx->ssize = coro_stacksize * (long)sizeof (long); 1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
893 New (0, cctx->sptr, coro_stacksize, long); 1243 New (0, cctx->sptr, cctx_stacksize, long);
894 1244
895 if (!cctx->sptr) 1245 if (!cctx->sptr)
896 { 1246 {
897 perror ("FATAL: unable to allocate stack for coroutine"); 1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
898 _exit (EXIT_FAILURE); 1248 _exit (EXIT_FAILURE);
899 } 1249 }
900 1250
901 stack_start = cctx->sptr; 1251 stack_start = cctx->sptr;
902 stack_size = cctx->ssize; 1252 stack_size = cctx->ssize;
903 } 1253 }
904 1254
905 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1257 #endif
1258
906 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1259 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
907 1260
908 return cctx; 1261 return cctx;
909} 1262}
910 1263
911static void 1264static void
912cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
913{ 1266{
914 if (!cctx) 1267 if (!cctx)
915 return; 1268 return;
916 1269
1270 assert (cctx != cctx_current);//D temporary
1271
917 --cctx_count; 1272 --cctx_count;
1273 coro_destroy (&cctx->cctx);
918 1274
1275 /* coro_transfer creates new, empty cctx's */
1276 if (cctx->sptr)
1277 {
919#if CORO_USE_VALGRIND 1278 #if CORO_USE_VALGRIND
920 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
921#endif 1280 #endif
922 1281
923#if HAVE_MMAP 1282#if HAVE_MMAP
924 if (cctx->flags & CC_MAPPED) 1283 if (cctx->flags & CC_MAPPED)
925 munmap (cctx->sptr, cctx->ssize); 1284 munmap (cctx->sptr, cctx->ssize);
926 else 1285 else
927#endif 1286#endif
928 Safefree (cctx->sptr); 1287 Safefree (cctx->sptr);
1288 }
929 1289
930 Safefree (cctx); 1290 Safefree (cctx);
931} 1291}
1292
1293/* wether this cctx should be destructed */
1294#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
932 1295
933static coro_cctx * 1296static coro_cctx *
934cctx_get (pTHX) 1297cctx_get (pTHX)
935{ 1298{
936 while (cctx_first) 1299 while (expect_true (cctx_first))
937 { 1300 {
938 coro_cctx *cctx = cctx_first; 1301 coro_cctx *cctx = cctx_first;
939 cctx_first = cctx->next; 1302 cctx_first = cctx->next;
940 --cctx_idle; 1303 --cctx_idle;
941 1304
942 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1305 if (expect_true (!CCTX_EXPIRED (cctx)))
943 return cctx; 1306 return cctx;
944 1307
945 cctx_destroy (cctx); 1308 cctx_destroy (cctx);
946 } 1309 }
947 1310
948 return cctx_new (); 1311 return cctx_new_run ();
949} 1312}
950 1313
951static void 1314static void
952cctx_put (coro_cctx *cctx) 1315cctx_put (coro_cctx *cctx)
953{ 1316{
1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1318
954 /* free another cctx if overlimit */ 1319 /* free another cctx if overlimit */
955 if (cctx_idle >= MAX_IDLE_CCTX) 1320 if (expect_false (cctx_idle >= cctx_max_idle))
956 { 1321 {
957 coro_cctx *first = cctx_first; 1322 coro_cctx *first = cctx_first;
958 cctx_first = first->next; 1323 cctx_first = first->next;
959 --cctx_idle; 1324 --cctx_idle;
960 1325
… …
966 cctx_first = cctx; 1331 cctx_first = cctx;
967} 1332}
968 1333
969/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
970 1335
971static void NOINLINE 1336static void
972transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
973{ 1338{
974 if (prev != next) 1339 /* TODO: throwing up here is considered harmful */
1340
1341 if (expect_true (prev != next))
975 { 1342 {
976 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
977 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
978 1345
979 if (next->flags & CF_RUNNING) 1346 if (expect_false (next->flags & CF_RUNNING))
980 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
981 1348
982 if (next->flags & CF_DESTROYED) 1349 if (expect_false (next->flags & CF_DESTROYED))
983 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
984 1351
1352#if !PERL_VERSION_ATLEAST (5,10,0)
985 if (PL_lex_state != LEX_NOTPARSING) 1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
986 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1355#endif
987 } 1356 }
988} 1357}
989 1358
990/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
991static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
992transfer (pTHX_ struct coro *prev, struct coro *next) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
993{ 1362{
994 dSTACKLEVEL; 1363 dSTACKLEVEL;
995 1364
996 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
997 if (!next) 1366 if (expect_false (!prev))
998 { 1367 {
999 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1368 cctx_current->idle_sp = STACKLEVEL;
1000 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1001 }
1002 else if (prev != next)
1003 { 1370 }
1371 else if (expect_true (prev != next))
1372 {
1004 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1005 1374
1006 if (prev->flags & CF_NEW) 1375 if (expect_false (prev->flags & CF_NEW))
1007 { 1376 {
1008 /* create a new empty context */ 1377 /* create a new empty/source context */
1009 Newz (0, prev->cctx, 1, coro_cctx);
1010 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1011 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1012 } 1380 }
1013 1381
1014 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
1015 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
1016 1384
1017 LOCK; 1385 /* first get rid of the old state */
1386 save_perl (aTHX_ prev);
1018 1387
1019 if (next->flags & CF_NEW) 1388 if (expect_false (next->flags & CF_NEW))
1020 { 1389 {
1021 /* need to start coroutine */ 1390 /* need to start coroutine */
1022 next->flags &= ~CF_NEW; 1391 next->flags &= ~CF_NEW;
1023 /* first get rid of the old state */
1024 save_perl (aTHX_ prev);
1025 /* setup coroutine call */ 1392 /* setup coroutine call */
1026 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1027 } 1394 }
1028 else 1395 else
1396 load_perl (aTHX_ next);
1397
1398 assert (!prev->cctx);//D temporary
1399
1400 /* possibly untie and reuse the cctx */
1401 if (expect_true (
1402 cctx_current->idle_sp == STACKLEVEL
1403 && !(cctx_current->flags & CC_TRACE)
1404 && !force_cctx
1405 ))
1029 { 1406 {
1030 /* coroutine already started */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1031 save_perl (aTHX_ prev); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1032 load_perl (aTHX_ next); 1409
1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1413 if (expect_true (!next->cctx))
1414 next->cctx = cctx_get (aTHX);
1415
1416 cctx_put (cctx_current);
1033 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1034 1420
1035 prev__cctx = prev->cctx; 1421 ++next->usecount;
1036 1422
1037 /* possibly "free" the cctx */ 1423 cctx_prev = cctx_current;
1038 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1425
1426 next->cctx = 0;
1427
1428 if (expect_false (cctx_prev != cctx_current))
1039 { 1429 {
1040 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1430 cctx_prev->top_env = PL_top_env;
1041 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1431 PL_top_env = cctx_current->top_env;
1042 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1043 prev->cctx = 0;
1044
1045 cctx_put (prev__cctx);
1046 } 1433 }
1047 1434
1048 ++next->usecount; 1435 transfer_tail (aTHX);
1049
1050 if (!next->cctx)
1051 next->cctx = cctx_get (aTHX);
1052
1053 if (prev__cctx != next->cctx)
1054 {
1055 prev__cctx->top_env = PL_top_env;
1056 PL_top_env = next->cctx->top_env;
1057 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1058 }
1059
1060 free_coro_mortal (aTHX);
1061 UNLOCK;
1062 } 1436 }
1063} 1437}
1064 1438
1065struct transfer_args
1066{
1067 struct coro *prev, *next;
1068};
1069
1070#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1071#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1072 1441
1073/** high level stuff ********************************************************/ 1442/** high level stuff ********************************************************/
1074 1443
1075static int 1444static int
1076coro_state_destroy (pTHX_ struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
1077{ 1446{
1078 if (coro->flags & CF_DESTROYED) 1447 if (coro->flags & CF_DESTROYED)
1079 return 0; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1080 1452
1081 coro->flags |= CF_DESTROYED; 1453 coro->flags |= CF_DESTROYED;
1082 1454
1083 if (coro->flags & CF_READY) 1455 if (coro->flags & CF_READY)
1084 { 1456 {
1085 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1086 /* alternative: look through all ready queues and remove the coro */ 1458 /* alternative: look through all ready queues and remove the coro */
1087 LOCK;
1088 --coro_nready; 1459 --coro_nready;
1089 UNLOCK;
1090 } 1460 }
1091 else 1461 else
1092 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1093 1463
1094 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1095 { 1465 {
1096 struct coro temp; 1466 struct coro temp;
1097 1467
1098 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1099 croak ("FATAL: tried to destroy currently running coroutine");
1100 1469
1101 save_perl (aTHX_ &temp); 1470 save_perl (aTHX_ &temp);
1102 load_perl (aTHX_ coro); 1471 load_perl (aTHX_ coro);
1103 1472
1104 coro_destroy (aTHX_ coro); 1473 coro_destruct (aTHX_ coro);
1105 1474
1106 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1475 load_perl (aTHX_ &temp);
1107 1476
1108 coro->mainstack = 0; 1477 coro->slot = 0;
1109 } 1478 }
1110 1479
1111 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1112 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1113 1484
1114 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1115 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1116 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1117 1488
… …
1155# define MGf_DUP 0 1526# define MGf_DUP 0
1156#endif 1527#endif
1157}; 1528};
1158 1529
1159static void 1530static void
1160prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1161{ 1532{
1162 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
1163 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1164 TRANSFER_CHECK (*ta); 1535 TRANSFER_CHECK (*ta);
1165} 1536}
1166 1537
1167static void 1538static void
1168api_transfer (SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1169{ 1540{
1170 dTHX;
1171 struct transfer_args ta; 1541 struct coro_transfer_args ta;
1172 1542
1173 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1174 TRANSFER (ta); 1544 TRANSFER (ta, 1);
1545}
1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1175} 1568}
1176 1569
1177/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1178 1571
1179static void 1572INLINE void
1180coro_enq (pTHX_ SV *coro_sv) 1573coro_enq (pTHX_ struct coro *coro)
1181{ 1574{
1182 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1183} 1576}
1184 1577
1185static SV * 1578INLINE SV *
1186coro_deq (pTHX_ int min_prio) 1579coro_deq (pTHX)
1187{ 1580{
1188 int prio = PRIO_MAX - PRIO_MIN; 1581 int prio;
1189 1582
1190 min_prio -= PRIO_MIN;
1191 if (min_prio < 0)
1192 min_prio = 0;
1193
1194 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1195 if (AvFILLp (coro_ready [prio]) >= 0) 1584 if (AvFILLp (coro_ready [prio]) >= 0)
1196 return av_shift (coro_ready [prio]); 1585 return av_shift (coro_ready [prio]);
1197 1586
1198 return 0; 1587 return 0;
1199} 1588}
1200 1589
1201static int 1590static int
1202api_ready (SV *coro_sv) 1591api_ready (pTHX_ SV *coro_sv)
1203{ 1592{
1204 dTHX;
1205 struct coro *coro; 1593 struct coro *coro;
1206 1594 SV *sv_hook;
1207 if (SvROK (coro_sv)) 1595 void (*xs_hook)(void);
1208 coro_sv = SvRV (coro_sv);
1209 1596
1210 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1211 1598
1212 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1213 return 0; 1600 return 0;
1214 1601
1215 coro->flags |= CF_READY; 1602 coro->flags |= CF_READY;
1216 1603
1217 LOCK; 1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1218 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro);
1219 ++coro_nready; 1608 ++coro_nready;
1220 UNLOCK; 1609
1610 if (sv_hook)
1611 {
1612 dSP;
1613
1614 ENTER;
1615 SAVETMPS;
1616
1617 PUSHMARK (SP);
1618 PUTBACK;
1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1620
1621 FREETMPS;
1622 LEAVE;
1623 }
1624
1625 if (xs_hook)
1626 xs_hook ();
1221 1627
1222 return 1; 1628 return 1;
1223} 1629}
1224 1630
1225static int 1631static int
1226api_is_ready (SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1227{ 1633{
1228 dTHX;
1229 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1230} 1635}
1231 1636
1232static void 1637/* expects to own a reference to next->hv */
1638INLINE void
1233prepare_schedule (pTHX_ struct transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1234{ 1640{
1235 SV *prev_sv, *next_sv;
1236
1237 for (;;)
1238 {
1239 LOCK;
1240 next_sv = coro_deq (aTHX_ PRIO_MIN);
1241
1242 /* nothing to schedule: call the idle handler */
1243 if (!next_sv)
1244 {
1245 dSP;
1246 UNLOCK;
1247
1248 ENTER;
1249 SAVETMPS;
1250
1251 PUSHMARK (SP);
1252 PUTBACK;
1253 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1254
1255 FREETMPS;
1256 LEAVE;
1257 continue;
1258 }
1259
1260 ta->next = SvSTATE (next_sv);
1261
1262 /* cannot transfer to destroyed coros, skip and look for next */
1263 if (ta->next->flags & CF_DESTROYED)
1264 {
1265 UNLOCK;
1266 SvREFCNT_dec (next_sv);
1267 /* coro_nready is already taken care of by destroy */
1268 continue;
1269 }
1270
1271 --coro_nready;
1272 UNLOCK;
1273 break;
1274 }
1275
1276 /* free this only after the transfer */
1277 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1278 ta->prev = SvSTATE (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1279 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1280 assert (ta->next->flags & CF_READY); 1647
1281 ta->next->flags &= ~CF_READY;
1282 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1283 1649
1284 LOCK;
1285 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1286 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1287 UNLOCK;
1288} 1652}
1289 1653
1290static void 1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1703}
1704
1705INLINE void
1291prepare_cede (pTHX_ struct transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1292{ 1707{
1293 api_ready (coro_current); 1708 api_ready (aTHX_ coro_current);
1294 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
1295} 1710}
1296 1711
1712INLINE void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{
1715 SV *prev = SvRV (coro_current);
1716
1717 if (coro_nready)
1718 {
1719 prepare_schedule (aTHX_ ta);
1720 api_ready (aTHX_ prev);
1721 }
1722 else
1723 prepare_nop (aTHX_ ta);
1724}
1725
1726static void
1727api_schedule (pTHX)
1728{
1729 struct coro_transfer_args ta;
1730
1731 prepare_schedule (aTHX_ &ta);
1732 TRANSFER (ta, 1);
1733}
1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1297static int 1745static int
1298prepare_cede_notself (pTHX_ struct transfer_args *ta) 1746api_cede (pTHX)
1299{ 1747{
1300 if (coro_nready) 1748 struct coro_transfer_args ta;
1301 { 1749
1302 SV *prev = SvRV (coro_current);
1303 prepare_schedule (aTHX_ ta); 1750 prepare_cede (aTHX_ &ta);
1304 api_ready (prev); 1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
1305 return 1; 1755 return 1;
1306 } 1756 }
1307 else 1757 else
1308 return 0; 1758 return 0;
1309} 1759}
1310 1760
1311static void
1312api_schedule (void)
1313{
1314 dTHX;
1315 struct transfer_args ta;
1316
1317 prepare_schedule (aTHX_ &ta);
1318 TRANSFER (ta);
1319}
1320
1321static int 1761static int
1322api_cede (void) 1762api_cede_notself (pTHX)
1323{ 1763{
1324 dTHX; 1764 if (coro_nready)
1765 {
1325 struct transfer_args ta; 1766 struct coro_transfer_args ta;
1326 1767
1327 prepare_cede (aTHX_ &ta); 1768 prepare_cede_notself (aTHX_ &ta);
1328
1329 if (ta.prev != ta.next)
1330 {
1331 TRANSFER (ta); 1769 TRANSFER (ta, 1);
1332 return 1; 1770 return 1;
1333 } 1771 }
1334 else 1772 else
1335 return 0; 1773 return 0;
1336} 1774}
1337 1775
1338static int 1776static void
1339api_cede_notself (void)
1340{
1341 dTHX;
1342 struct transfer_args ta;
1343
1344 if (prepare_cede_notself (aTHX_ &ta))
1345 {
1346 TRANSFER (ta);
1347 return 1;
1348 }
1349 else
1350 return 0;
1351}
1352
1353static void
1354api_trace (SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1355{ 1778{
1356 dTHX;
1357 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1358 1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1359 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1360 { 1785 {
1361 if (!coro->cctx) 1786 if (!coro->cctx)
1362 coro->cctx = cctx_new (); 1787 coro->cctx = cctx_new_run ();
1363 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1364 croak ("cannot enable tracing on coroutine with custom stack"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1365 1790
1366 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1367 } 1792 }
1368 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1369 { 1794 {
1370 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1795 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1371 1796
1372 if (coro->flags & CF_RUNNING) 1797 if (coro->flags & CF_RUNNING)
1373 PL_runops = RUNOPS_DEFAULT; 1798 PL_runops = RUNOPS_DEFAULT;
1374 else 1799 else
1375 coro->runops = RUNOPS_DEFAULT; 1800 coro->slot->runops = RUNOPS_DEFAULT;
1801 }
1802}
1803
1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1860static int
1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1862{
1863 HV *hv = (HV *)SvRV (coro_current);
1864 struct coro *coro = (struct coro *)frame->data;
1865
1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
1376 } 1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1377} 1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1989
1990 return 0;
1991}
1992
1993static void
1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 SV *cb;
1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2033
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */
2036
2037 SvREFCNT_dec (coro->rouse_cb);
2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
2284
2285/*****************************************************************************/
2286/* PerlIO::cede */
2287
2288typedef struct
2289{
2290 PerlIOBuf base;
2291 NV next, every;
2292} PerlIOCede;
2293
2294static IV
2295PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2296{
2297 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2298
2299 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2300 self->next = nvtime () + self->every;
2301
2302 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2303}
2304
2305static SV *
2306PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2307{
2308 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2309
2310 return newSVnv (self->every);
2311}
2312
2313static IV
2314PerlIOCede_flush (pTHX_ PerlIO *f)
2315{
2316 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2317 double now = nvtime ();
2318
2319 if (now >= self->next)
2320 {
2321 api_cede (aTHX);
2322 self->next = now + self->every;
2323 }
2324
2325 return PerlIOBuf_flush (aTHX_ f);
2326}
2327
2328static PerlIO_funcs PerlIO_cede =
2329{
2330 sizeof(PerlIO_funcs),
2331 "cede",
2332 sizeof(PerlIOCede),
2333 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2334 PerlIOCede_pushed,
2335 PerlIOBuf_popped,
2336 PerlIOBuf_open,
2337 PerlIOBase_binmode,
2338 PerlIOCede_getarg,
2339 PerlIOBase_fileno,
2340 PerlIOBuf_dup,
2341 PerlIOBuf_read,
2342 PerlIOBuf_unread,
2343 PerlIOBuf_write,
2344 PerlIOBuf_seek,
2345 PerlIOBuf_tell,
2346 PerlIOBuf_close,
2347 PerlIOCede_flush,
2348 PerlIOBuf_fill,
2349 PerlIOBase_eof,
2350 PerlIOBase_error,
2351 PerlIOBase_clearerr,
2352 PerlIOBase_setlinebuf,
2353 PerlIOBuf_get_base,
2354 PerlIOBuf_bufsiz,
2355 PerlIOBuf_get_ptr,
2356 PerlIOBuf_get_cnt,
2357 PerlIOBuf_set_ptrcnt,
2358};
2359
2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
2362
2363static SV *
2364coro_waitarray_new (pTHX_ int count)
2365{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373#if PERL_VERSION_ATLEAST (5,10,0)
2374 AvARRAY (av) = ary;
2375#else
2376 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2377 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2378 SvPVX ((SV *)av) = (char *)ary;
2379#endif
2380 AvMAX (av) = 1;
2381 AvFILLp (av) = 0;
2382 ary [0] = newSViv (count);
2383
2384 return newRV_noinc ((SV *)av);
2385}
2386
2387/* semaphore */
2388
2389static void
2390coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2391{
2392 SV *count_sv = AvARRAY (av)[0];
2393 IV count = SvIVX (count_sv);
2394
2395 count += adjust;
2396 SvIVX (count_sv) = count;
2397
2398 /* now wake up as many waiters as are expected to lock */
2399 while (count > 0 && AvFILLp (av) > 0)
2400 {
2401 SV *cb;
2402
2403 /* swap first two elements so we can shift a waiter */
2404 AvARRAY (av)[0] = AvARRAY (av)[1];
2405 AvARRAY (av)[1] = count_sv;
2406 cb = av_shift (av);
2407
2408 if (SvOBJECT (cb))
2409 {
2410 api_ready (aTHX_ cb);
2411 --count;
2412 }
2413 else if (SvTYPE (cb) == SVt_PVCV)
2414 {
2415 dSP;
2416 PUSHMARK (SP);
2417 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2418 PUTBACK;
2419 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2420 }
2421
2422 SvREFCNT_dec (cb);
2423 }
2424}
2425
2426static void
2427coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2428{
2429 /* call $sem->adjust (0) to possibly wake up some other waiters */
2430 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2431}
2432
2433static int
2434slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2435{
2436 AV *av = (AV *)frame->data;
2437 SV *count_sv = AvARRAY (av)[0];
2438
2439 /* if we are about to throw, don't actually acquire the lock, just throw */
2440 if (CORO_THROW)
2441 return 0;
2442 else if (SvIVX (count_sv) > 0)
2443 {
2444 SvSTATE_current->on_destroy = 0;
2445
2446 if (acquire)
2447 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2448 else
2449 coro_semaphore_adjust (aTHX_ av, 0);
2450
2451 return 0;
2452 }
2453 else
2454 {
2455 int i;
2456 /* if we were woken up but can't down, we look through the whole */
2457 /* waiters list and only add us if we aren't in there already */
2458 /* this avoids some degenerate memory usage cases */
2459
2460 for (i = 1; i <= AvFILLp (av); ++i)
2461 if (AvARRAY (av)[i] == SvRV (coro_current))
2462 return 1;
2463
2464 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2465 return 1;
2466 }
2467}
2468
2469static int
2470slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2471{
2472 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2473}
2474
2475static int
2476slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2477{
2478 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2479}
2480
2481static void
2482slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 AV *av = (AV *)SvRV (arg [0]);
2485
2486 if (SvIVX (AvARRAY (av)[0]) > 0)
2487 {
2488 frame->data = (void *)av;
2489 frame->prepare = prepare_nop;
2490 }
2491 else
2492 {
2493 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2494
2495 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2496 frame->prepare = prepare_schedule;
2497
2498 /* to avoid race conditions when a woken-up coro gets terminated */
2499 /* we arrange for a temporary on_destroy that calls adjust (0) */
2500 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2501 }
2502}
2503
2504static void
2505slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2506{
2507 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2508 frame->check = slf_check_semaphore_down;
2509}
2510
2511static void
2512slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2513{
2514 if (items >= 2)
2515 {
2516 /* callback form */
2517 AV *av = (AV *)SvRV (arg [0]);
2518 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2519
2520 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2521
2522 if (SvIVX (AvARRAY (av)[0]) > 0)
2523 coro_semaphore_adjust (aTHX_ av, 0);
2524
2525 frame->prepare = prepare_nop;
2526 frame->check = slf_check_nop;
2527 }
2528 else
2529 {
2530 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2531 frame->check = slf_check_semaphore_wait;
2532 }
2533}
2534
2535/* signal */
2536
2537static void
2538coro_signal_wake (pTHX_ AV *av, int count)
2539{
2540 SvIVX (AvARRAY (av)[0]) = 0;
2541
2542 /* now signal count waiters */
2543 while (count > 0 && AvFILLp (av) > 0)
2544 {
2545 SV *cb;
2546
2547 /* swap first two elements so we can shift a waiter */
2548 cb = AvARRAY (av)[0];
2549 AvARRAY (av)[0] = AvARRAY (av)[1];
2550 AvARRAY (av)[1] = cb;
2551
2552 cb = av_shift (av);
2553
2554 api_ready (aTHX_ cb);
2555 sv_setiv (cb, 0); /* signal waiter */
2556 SvREFCNT_dec (cb);
2557
2558 --count;
2559 }
2560}
2561
2562static int
2563slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2564{
2565 /* if we are about to throw, also stop waiting */
2566 return SvROK ((SV *)frame->data) && !CORO_THROW;
2567}
2568
2569static void
2570slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2571{
2572 AV *av = (AV *)SvRV (arg [0]);
2573
2574 if (SvIVX (AvARRAY (av)[0]))
2575 {
2576 SvIVX (AvARRAY (av)[0]) = 0;
2577 frame->prepare = prepare_nop;
2578 frame->check = slf_check_nop;
2579 }
2580 else
2581 {
2582 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2583
2584 av_push (av, waiter);
2585
2586 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2587 frame->prepare = prepare_schedule;
2588 frame->check = slf_check_signal_wait;
2589 }
2590}
2591
2592/*****************************************************************************/
2593/* Coro::AIO */
2594
2595#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2596
2597/* helper storage struct */
2598struct io_state
2599{
2600 int errorno;
2601 I32 laststype; /* U16 in 5.10.0 */
2602 int laststatval;
2603 Stat_t statcache;
2604};
2605
2606static void
2607coro_aio_callback (pTHX_ CV *cv)
2608{
2609 dXSARGS;
2610 AV *state = (AV *)GENSUB_ARG;
2611 SV *coro = av_pop (state);
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613
2614 av_extend (state, items - 1);
2615
2616 sv_upgrade (data_sv, SVt_PV);
2617 SvCUR_set (data_sv, sizeof (struct io_state));
2618 SvPOK_only (data_sv);
2619
2620 {
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622
2623 data->errorno = errno;
2624 data->laststype = PL_laststype;
2625 data->laststatval = PL_laststatval;
2626 data->statcache = PL_statcache;
2627 }
2628
2629 /* now build the result vector out of all the parameters and the data_sv */
2630 {
2631 int i;
2632
2633 for (i = 0; i < items; ++i)
2634 av_push (state, SvREFCNT_inc_NN (ST (i)));
2635 }
2636
2637 av_push (state, data_sv);
2638
2639 api_ready (aTHX_ coro);
2640 SvREFCNT_dec (coro);
2641 SvREFCNT_dec ((AV *)state);
2642}
2643
2644static int
2645slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2646{
2647 AV *state = (AV *)frame->data;
2648
2649 /* if we are about to throw, return early */
2650 /* this does not cancel the aio request, but at least */
2651 /* it quickly returns */
2652 if (CORO_THROW)
2653 return 0;
2654
2655 /* one element that is an RV? repeat! */
2656 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2657 return 1;
2658
2659 /* restore status */
2660 {
2661 SV *data_sv = av_pop (state);
2662 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2663
2664 errno = data->errorno;
2665 PL_laststype = data->laststype;
2666 PL_laststatval = data->laststatval;
2667 PL_statcache = data->statcache;
2668
2669 SvREFCNT_dec (data_sv);
2670 }
2671
2672 /* push result values */
2673 {
2674 dSP;
2675 int i;
2676
2677 EXTEND (SP, AvFILLp (state) + 1);
2678 for (i = 0; i <= AvFILLp (state); ++i)
2679 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2680
2681 PUTBACK;
2682 }
2683
2684 return 0;
2685}
2686
2687static void
2688slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2689{
2690 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2691 SV *coro_hv = SvRV (coro_current);
2692 struct coro *coro = SvSTATE_hv (coro_hv);
2693
2694 /* put our coroutine id on the state arg */
2695 av_push (state, SvREFCNT_inc_NN (coro_hv));
2696
2697 /* first see whether we have a non-zero priority and set it as AIO prio */
2698 if (coro->prio)
2699 {
2700 dSP;
2701
2702 static SV *prio_cv;
2703 static SV *prio_sv;
2704
2705 if (expect_false (!prio_cv))
2706 {
2707 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2708 prio_sv = newSViv (0);
2709 }
2710
2711 PUSHMARK (SP);
2712 sv_setiv (prio_sv, coro->prio);
2713 XPUSHs (prio_sv);
2714
2715 PUTBACK;
2716 call_sv (prio_cv, G_VOID | G_DISCARD);
2717 }
2718
2719 /* now call the original request */
2720 {
2721 dSP;
2722 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2723 int i;
2724
2725 PUSHMARK (SP);
2726
2727 /* first push all args to the stack */
2728 EXTEND (SP, items + 1);
2729
2730 for (i = 0; i < items; ++i)
2731 PUSHs (arg [i]);
2732
2733 /* now push the callback closure */
2734 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2735
2736 /* now call the AIO function - we assume our request is uncancelable */
2737 PUTBACK;
2738 call_sv ((SV *)req, G_VOID | G_DISCARD);
2739 }
2740
2741 /* now that the requets is going, we loop toll we have a result */
2742 frame->data = (void *)state;
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_aio_req;
2745}
2746
2747static void
2748coro_aio_req_xs (pTHX_ CV *cv)
2749{
2750 dXSARGS;
2751
2752 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2753
2754 XSRETURN_EMPTY;
2755}
2756
2757/*****************************************************************************/
2758
2759#if CORO_CLONE
2760# include "clone.c"
2761#endif
1378 2762
1379MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2763MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1380 2764
1381PROTOTYPES: DISABLE 2765PROTOTYPES: DISABLE
1382 2766
1383BOOT: 2767BOOT:
1384{ 2768{
1385#ifdef USE_ITHREADS 2769#ifdef USE_ITHREADS
1386 MUTEX_INIT (&coro_mutex); 2770# if CORO_PTHREAD
2771 coro_thx = PERL_GET_CONTEXT;
2772# endif
1387#endif 2773#endif
1388 BOOT_PAGESIZE; 2774 BOOT_PAGESIZE;
1389 2775
2776 cctx_current = cctx_new_empty ();
2777
1390 irsgv = gv_fetchpv ("/", 1, SVt_PV); 2778 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2779 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2780
2781 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2782 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2783 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2784
2785 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2786 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2787 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1391 2788
1392 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2789 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1393 2790
1394 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2791 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1395 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2792 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1400 main_top_env = PL_top_env; 2797 main_top_env = PL_top_env;
1401 2798
1402 while (main_top_env->je_prev) 2799 while (main_top_env->je_prev)
1403 main_top_env = main_top_env->je_prev; 2800 main_top_env = main_top_env->je_prev;
1404 2801
2802 {
2803 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2804
2805 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2806 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2807
2808 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2809 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2810 }
2811
1405 coroapi.ver = CORO_API_VERSION; 2812 coroapi.ver = CORO_API_VERSION;
2813 coroapi.rev = CORO_API_REVISION;
2814
1406 coroapi.transfer = api_transfer; 2815 coroapi.transfer = api_transfer;
2816
2817 coroapi.sv_state = SvSTATE_;
2818 coroapi.execute_slf = api_execute_slf;
2819 coroapi.prepare_nop = prepare_nop;
2820 coroapi.prepare_schedule = prepare_schedule;
2821 coroapi.prepare_cede = prepare_cede;
2822 coroapi.prepare_cede_notself = prepare_cede_notself;
2823
2824 {
2825 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2826
2827 if (!svp) croak ("Time::HiRes is required");
2828 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2829
2830 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2831 }
1407 2832
1408 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2833 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1409} 2834}
1410 2835
1411SV * 2836SV *
1412new (char *klass, ...) 2837new (char *klass, ...)
2838 ALIAS:
2839 Coro::new = 1
1413 CODE: 2840 CODE:
1414{ 2841{
1415 struct coro *coro; 2842 struct coro *coro;
2843 MAGIC *mg;
1416 HV *hv; 2844 HV *hv;
2845 CV *cb;
1417 int i; 2846 int i;
2847
2848 if (items > 1)
2849 {
2850 cb = coro_sv_2cv (aTHX_ ST (1));
2851
2852 if (!ix)
2853 {
2854 if (CvISXSUB (cb))
2855 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2856
2857 if (!CvROOT (cb))
2858 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2859 }
2860 }
1418 2861
1419 Newz (0, coro, 1, struct coro); 2862 Newz (0, coro, 1, struct coro);
1420 coro->args = newAV (); 2863 coro->args = newAV ();
1421 coro->flags = CF_NEW; 2864 coro->flags = CF_NEW;
1422 2865
1423 if (coro_first) coro_first->prev = coro; 2866 if (coro_first) coro_first->prev = coro;
1424 coro->next = coro_first; 2867 coro->next = coro_first;
1425 coro_first = coro; 2868 coro_first = coro;
1426 2869
1427 coro->hv = hv = newHV (); 2870 coro->hv = hv = newHV ();
1428 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2871 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2872 mg->mg_flags |= MGf_DUP;
1429 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2873 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1430 2874
2875 if (items > 1)
2876 {
2877 av_extend (coro->args, items - 1 + ix - 1);
2878
2879 if (ix)
2880 {
2881 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2882 cb = cv_coro_run;
2883 }
2884
2885 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2886
1431 for (i = 1; i < items; i++) 2887 for (i = 2; i < items; i++)
1432 av_push (coro->args, newSVsv (ST (i))); 2888 av_push (coro->args, newSVsv (ST (i)));
2889 }
1433} 2890}
1434 OUTPUT: 2891 OUTPUT:
1435 RETVAL 2892 RETVAL
1436 2893
1437# these not obviously related functions are all rolled into the same xs
1438# function to increase chances that they all will call transfer with the same
1439# stack offset
1440void 2894void
1441_set_stacklevel (...) 2895transfer (...)
1442 ALIAS: 2896 PROTOTYPE: $$
1443 Coro::State::transfer = 1 2897 CODE:
1444 Coro::schedule = 2 2898 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1445 Coro::cede = 3
1446 Coro::cede_notself = 4
1447 CODE:
1448{
1449 struct transfer_args ta;
1450
1451 switch (ix)
1452 {
1453 case 0:
1454 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1455 ta.next = 0;
1456 break;
1457
1458 case 1:
1459 if (items != 2)
1460 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1461
1462 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1463 break;
1464
1465 case 2:
1466 prepare_schedule (aTHX_ &ta);
1467 break;
1468
1469 case 3:
1470 prepare_cede (aTHX_ &ta);
1471 break;
1472
1473 case 4:
1474 if (!prepare_cede_notself (aTHX_ &ta))
1475 XSRETURN_EMPTY;
1476
1477 break;
1478 }
1479
1480 BARRIER;
1481 TRANSFER (ta);
1482
1483 if (GIMME_V != G_VOID && ta.next != ta.prev)
1484 XSRETURN_YES;
1485}
1486 2899
1487bool 2900bool
1488_destroy (SV *coro_sv) 2901_destroy (SV *coro_sv)
1489 CODE: 2902 CODE:
1490 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2903 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1491 OUTPUT: 2904 OUTPUT:
1492 RETVAL 2905 RETVAL
1493 2906
1494void 2907void
1495_exit (code) 2908_exit (int code)
1496 int code
1497 PROTOTYPE: $ 2909 PROTOTYPE: $
1498 CODE: 2910 CODE:
1499 _exit (code); 2911 _exit (code);
1500 2912
2913SV *
2914clone (Coro::State coro)
2915 CODE:
2916{
2917#if CORO_CLONE
2918 struct coro *ncoro = coro_clone (coro);
2919 MAGIC *mg;
2920 /* TODO: too much duplication */
2921 ncoro->hv = newHV ();
2922 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2923 mg->mg_flags |= MGf_DUP;
2924 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2925#else
2926 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2927#endif
2928}
2929 OUTPUT:
2930 RETVAL
2931
1501int 2932int
1502cctx_stacksize (int new_stacksize = 0) 2933cctx_stacksize (int new_stacksize = 0)
2934 PROTOTYPE: ;$
1503 CODE: 2935 CODE:
1504 RETVAL = coro_stacksize; 2936 RETVAL = cctx_stacksize;
1505 if (new_stacksize) 2937 if (new_stacksize)
2938 {
1506 coro_stacksize = new_stacksize; 2939 cctx_stacksize = new_stacksize;
2940 ++cctx_gen;
2941 }
1507 OUTPUT: 2942 OUTPUT:
1508 RETVAL 2943 RETVAL
1509 2944
1510int 2945int
2946cctx_max_idle (int max_idle = 0)
2947 PROTOTYPE: ;$
2948 CODE:
2949 RETVAL = cctx_max_idle;
2950 if (max_idle > 1)
2951 cctx_max_idle = max_idle;
2952 OUTPUT:
2953 RETVAL
2954
2955int
1511cctx_count () 2956cctx_count ()
2957 PROTOTYPE:
1512 CODE: 2958 CODE:
1513 RETVAL = cctx_count; 2959 RETVAL = cctx_count;
1514 OUTPUT: 2960 OUTPUT:
1515 RETVAL 2961 RETVAL
1516 2962
1517int 2963int
1518cctx_idle () 2964cctx_idle ()
2965 PROTOTYPE:
1519 CODE: 2966 CODE:
1520 RETVAL = cctx_idle; 2967 RETVAL = cctx_idle;
1521 OUTPUT: 2968 OUTPUT:
1522 RETVAL 2969 RETVAL
1523 2970
1524void 2971void
1525list () 2972list ()
2973 PROTOTYPE:
1526 PPCODE: 2974 PPCODE:
1527{ 2975{
1528 struct coro *coro; 2976 struct coro *coro;
1529 for (coro = coro_first; coro; coro = coro->next) 2977 for (coro = coro_first; coro; coro = coro->next)
1530 if (coro->hv) 2978 if (coro->hv)
… …
1535call (Coro::State coro, SV *coderef) 2983call (Coro::State coro, SV *coderef)
1536 ALIAS: 2984 ALIAS:
1537 eval = 1 2985 eval = 1
1538 CODE: 2986 CODE:
1539{ 2987{
1540 if (coro->mainstack) 2988 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1541 { 2989 {
1542 struct coro temp; 2990 struct coro temp;
1543 Zero (&temp, 1, struct coro);
1544 2991
1545 if (!(coro->flags & CF_RUNNING)) 2992 if (!(coro->flags & CF_RUNNING))
1546 { 2993 {
2994 PUTBACK;
1547 save_perl (aTHX_ &temp); 2995 save_perl (aTHX_ &temp);
1548 load_perl (aTHX_ coro); 2996 load_perl (aTHX_ coro);
1549 } 2997 }
1550 2998
1551 { 2999 {
1552 dSP; 3000 dSP;
1553 ENTER; 3001 ENTER;
1554 SAVETMPS; 3002 SAVETMPS;
3003 PUTBACK;
3004 PUSHSTACK;
1555 PUSHMARK (SP); 3005 PUSHMARK (SP);
1556 PUTBACK; 3006
1557 if (ix) 3007 if (ix)
1558 eval_sv (coderef, 0); 3008 eval_sv (coderef, 0);
1559 else 3009 else
1560 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3010 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3011
3012 POPSTACK;
1561 SPAGAIN; 3013 SPAGAIN;
1562 FREETMPS; 3014 FREETMPS;
1563 LEAVE; 3015 LEAVE;
1564 PUTBACK; 3016 PUTBACK;
1565 } 3017 }
1566 3018
1567 if (!(coro->flags & CF_RUNNING)) 3019 if (!(coro->flags & CF_RUNNING))
1568 { 3020 {
1569 save_perl (aTHX_ coro); 3021 save_perl (aTHX_ coro);
1570 load_perl (aTHX_ &temp); 3022 load_perl (aTHX_ &temp);
3023 SPAGAIN;
1571 } 3024 }
1572 } 3025 }
1573} 3026}
1574 3027
1575SV * 3028SV *
… …
1584 RETVAL = boolSV (coro->flags & ix); 3037 RETVAL = boolSV (coro->flags & ix);
1585 OUTPUT: 3038 OUTPUT:
1586 RETVAL 3039 RETVAL
1587 3040
1588void 3041void
3042throw (Coro::State self, SV *throw = &PL_sv_undef)
3043 PROTOTYPE: $;$
3044 CODE:
3045{
3046 struct coro *current = SvSTATE_current;
3047 SV **throwp = self == current ? &CORO_THROW : &self->except;
3048 SvREFCNT_dec (*throwp);
3049 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3050}
3051
3052void
1589api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3053api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3054 PROTOTYPE: $;$
3055 C_ARGS: aTHX_ coro, flags
1590 3056
1591SV * 3057SV *
1592has_stack (Coro::State coro) 3058has_cctx (Coro::State coro)
1593 PROTOTYPE: $ 3059 PROTOTYPE: $
1594 CODE: 3060 CODE:
1595 RETVAL = boolSV (!!coro->cctx); 3061 /* maybe manage the running flag differently */
3062 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1596 OUTPUT: 3063 OUTPUT:
1597 RETVAL 3064 RETVAL
1598 3065
1599int 3066int
1600is_traced (Coro::State coro) 3067is_traced (Coro::State coro)
… …
1602 CODE: 3069 CODE:
1603 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3070 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1604 OUTPUT: 3071 OUTPUT:
1605 RETVAL 3072 RETVAL
1606 3073
1607IV 3074UV
1608rss (Coro::State coro) 3075rss (Coro::State coro)
1609 PROTOTYPE: $ 3076 PROTOTYPE: $
1610 ALIAS: 3077 ALIAS:
1611 usecount = 1 3078 usecount = 1
1612 CODE: 3079 CODE:
… …
1616 case 1: RETVAL = coro->usecount; break; 3083 case 1: RETVAL = coro->usecount; break;
1617 } 3084 }
1618 OUTPUT: 3085 OUTPUT:
1619 RETVAL 3086 RETVAL
1620 3087
3088void
3089force_cctx ()
3090 PROTOTYPE:
3091 CODE:
3092 cctx_current->idle_sp = 0;
3093
3094void
3095swap_defsv (Coro::State self)
3096 PROTOTYPE: $
3097 ALIAS:
3098 swap_defav = 1
3099 CODE:
3100 if (!self->slot)
3101 croak ("cannot swap state with coroutine that has no saved state,");
3102 else
3103 {
3104 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3105 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3106
3107 SV *tmp = *src; *src = *dst; *dst = tmp;
3108 }
3109
1621 3110
1622MODULE = Coro::State PACKAGE = Coro 3111MODULE = Coro::State PACKAGE = Coro
1623 3112
1624BOOT: 3113BOOT:
1625{ 3114{
1626 int i; 3115 int i;
1627 3116
1628 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3117 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1629 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3118 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3119 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3120 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3121 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1630 av_async_pool = get_av ("Coro::async_pool", TRUE); 3122 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3123 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3124 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3125 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1631 3126
1632 coro_current = get_sv ("Coro::current", FALSE); 3127 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1633 SvREADONLY_on (coro_current); 3128 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3129 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3130 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1634 3131
1635 coro_stash = gv_stashpv ("Coro", TRUE); 3132 coro_stash = gv_stashpv ("Coro", TRUE);
1636 3133
1637 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3134 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1638 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3135 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1639 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3136 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1640 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3137 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1643 3140
1644 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3141 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1645 coro_ready[i] = newAV (); 3142 coro_ready[i] = newAV ();
1646 3143
1647 { 3144 {
1648 SV *sv = perl_get_sv("Coro::API", 1); 3145 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1649 3146
1650 coroapi.schedule = api_schedule; 3147 coroapi.schedule = api_schedule;
3148 coroapi.schedule_to = api_schedule_to;
1651 coroapi.cede = api_cede; 3149 coroapi.cede = api_cede;
1652 coroapi.cede_notself = api_cede_notself; 3150 coroapi.cede_notself = api_cede_notself;
1653 coroapi.ready = api_ready; 3151 coroapi.ready = api_ready;
1654 coroapi.is_ready = api_is_ready; 3152 coroapi.is_ready = api_is_ready;
1655 coroapi.nready = &coro_nready; 3153 coroapi.nready = coro_nready;
1656 coroapi.current = coro_current; 3154 coroapi.current = coro_current;
1657 3155
1658 GCoroAPI = &coroapi; 3156 /*GCoroAPI = &coroapi;*/
1659 sv_setiv (sv, (IV)&coroapi); 3157 sv_setiv (sv, (IV)&coroapi);
1660 SvREADONLY_on (sv); 3158 SvREADONLY_on (sv);
1661 } 3159 }
1662} 3160}
3161
3162void
3163terminate (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3166
3167void
3168schedule (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3171
3172void
3173schedule_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3176
3177void
3178cede_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3181
3182void
3183cede (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede);
3186
3187void
3188cede_notself (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3191
3192void
3193_cancel (Coro::State self)
3194 CODE:
3195 coro_state_destroy (aTHX_ self);
3196 coro_call_on_destroy (aTHX_ self);
1663 3197
1664void 3198void
1665_set_current (SV *current) 3199_set_current (SV *current)
1666 PROTOTYPE: $ 3200 PROTOTYPE: $
1667 CODE: 3201 CODE:
1668 SvREFCNT_dec (SvRV (coro_current)); 3202 SvREFCNT_dec (SvRV (coro_current));
1669 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3203 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3204
3205void
3206_set_readyhook (SV *hook)
3207 PROTOTYPE: $
3208 CODE:
3209 SvREFCNT_dec (coro_readyhook);
3210 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1670 3211
1671int 3212int
1672prio (Coro::State coro, int newprio = 0) 3213prio (Coro::State coro, int newprio = 0)
3214 PROTOTYPE: $;$
1673 ALIAS: 3215 ALIAS:
1674 nice = 1 3216 nice = 1
1675 CODE: 3217 CODE:
1676{ 3218{
1677 RETVAL = coro->prio; 3219 RETVAL = coro->prio;
… …
1692 3234
1693SV * 3235SV *
1694ready (SV *self) 3236ready (SV *self)
1695 PROTOTYPE: $ 3237 PROTOTYPE: $
1696 CODE: 3238 CODE:
1697 RETVAL = boolSV (api_ready (self)); 3239 RETVAL = boolSV (api_ready (aTHX_ self));
1698 OUTPUT: 3240 OUTPUT:
1699 RETVAL 3241 RETVAL
1700 3242
1701int 3243int
1702nready (...) 3244nready (...)
… …
1704 CODE: 3246 CODE:
1705 RETVAL = coro_nready; 3247 RETVAL = coro_nready;
1706 OUTPUT: 3248 OUTPUT:
1707 RETVAL 3249 RETVAL
1708 3250
1709# for async_pool speedup
1710void 3251void
1711_pool_1 (SV *cb) 3252_pool_handler (...)
1712 CODE: 3253 CODE:
1713{ 3254 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1714 struct coro *coro = SvSTATE (coro_current);
1715 HV *hv = (HV *)SvRV (coro_current);
1716 AV *defav = GvAV (PL_defgv);
1717 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1718 AV *invoke_av;
1719 int i, len;
1720 3255
1721 if (!invoke) 3256void
1722 croak ("\3terminate\2\n"); 3257async_pool (SV *cv, ...)
3258 PROTOTYPE: &@
3259 PPCODE:
3260{
3261 HV *hv = (HV *)av_pop (av_async_pool);
3262 AV *av = newAV ();
3263 SV *cb = ST (0);
3264 int i;
1723 3265
1724 SvREFCNT_dec (coro->saved_deffh); 3266 av_extend (av, items - 2);
1725 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3267 for (i = 1; i < items; ++i)
3268 av_push (av, SvREFCNT_inc_NN (ST (i)));
1726 3269
1727 hv_store (hv, "desc", sizeof ("desc") - 1, 3270 if ((SV *)hv == &PL_sv_undef)
1728 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1729
1730 invoke_av = (AV *)SvRV (invoke);
1731 len = av_len (invoke_av);
1732
1733 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1734
1735 if (len > 0)
1736 { 3271 {
1737 av_fill (defav, len - 1); 3272 PUSHMARK (SP);
1738 for (i = 0; i < len; ++i) 3273 EXTEND (SP, 2);
1739 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3274 PUSHs (sv_Coro);
3275 PUSHs ((SV *)cv_pool_handler);
3276 PUTBACK;
3277 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3278 SPAGAIN;
3279
3280 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1740 } 3281 }
1741 3282
3283 {
3284 struct coro *coro = SvSTATE_hv (hv);
3285
3286 assert (!coro->invoke_cb);
3287 assert (!coro->invoke_av);
3288 coro->invoke_cb = SvREFCNT_inc (cb);
3289 coro->invoke_av = av;
3290 }
3291
3292 api_ready (aTHX_ (SV *)hv);
3293
3294 if (GIMME_V != G_VOID)
3295 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3296 else
1742 SvREFCNT_dec (invoke); 3297 SvREFCNT_dec (hv);
1743} 3298}
1744 3299
1745void 3300SV *
1746_pool_2 (SV *cb) 3301rouse_cb ()
3302 PROTOTYPE:
1747 CODE: 3303 CODE:
1748{ 3304 RETVAL = coro_new_rouse_cb (aTHX);
1749 struct coro *coro = SvSTATE (coro_current);
1750
1751 sv_setsv (cb, &PL_sv_undef);
1752
1753 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1754 coro->saved_deffh = 0;
1755
1756 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1757 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1758 croak ("\3terminate\2\n");
1759
1760 av_clear (GvAV (PL_defgv));
1761 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1762 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1763
1764 coro->prio = 0;
1765
1766 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1767 api_trace (coro_current, 0);
1768
1769 av_push (av_async_pool, newSVsv (coro_current));
1770}
1771
1772
1773MODULE = Coro::State PACKAGE = Coro::AIO
1774
1775SV *
1776_get_state ()
1777 CODE:
1778{
1779 struct io_state *data;
1780
1781 RETVAL = newSV (sizeof (struct io_state));
1782 data = (struct io_state *)SvPVX (RETVAL);
1783 SvCUR_set (RETVAL, sizeof (struct io_state));
1784 SvPOK_only (RETVAL);
1785
1786 data->errorno = errno;
1787 data->laststype = PL_laststype;
1788 data->laststatval = PL_laststatval;
1789 data->statcache = PL_statcache;
1790}
1791 OUTPUT: 3305 OUTPUT:
1792 RETVAL 3306 RETVAL
1793 3307
1794void 3308void
1795_set_state (char *data_) 3309rouse_wait (...)
1796 PROTOTYPE: $ 3310 PROTOTYPE: ;$
3311 PPCODE:
3312 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3313
3314
3315MODULE = Coro::State PACKAGE = PerlIO::cede
3316
3317BOOT:
3318 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3319
3320
3321MODULE = Coro::State PACKAGE = Coro::Semaphore
3322
3323SV *
3324new (SV *klass, SV *count = 0)
1797 CODE: 3325 CODE:
1798{ 3326 RETVAL = sv_bless (
1799 struct io_state *data = (void *)data_; 3327 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3328 GvSTASH (CvGV (cv))
3329 );
3330 OUTPUT:
3331 RETVAL
1800 3332
1801 errno = data->errorno; 3333# helper for Coro::Channel
1802 PL_laststype = data->laststype; 3334SV *
1803 PL_laststatval = data->laststatval; 3335_alloc (int count)
1804 PL_statcache = data->statcache; 3336 CODE:
1805} 3337 RETVAL = coro_waitarray_new (aTHX_ count);
3338 OUTPUT:
3339 RETVAL
1806 3340
3341SV *
3342count (SV *self)
3343 CODE:
3344 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3345 OUTPUT:
3346 RETVAL
3347
3348void
3349up (SV *self, int adjust = 1)
3350 ALIAS:
3351 adjust = 1
3352 CODE:
3353 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3354
3355void
3356down (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3359
3360void
3361wait (...)
3362 CODE:
3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3364
3365void
3366try (SV *self)
3367 PPCODE:
3368{
3369 AV *av = (AV *)SvRV (self);
3370 SV *count_sv = AvARRAY (av)[0];
3371 IV count = SvIVX (count_sv);
3372
3373 if (count > 0)
3374 {
3375 --count;
3376 SvIVX (count_sv) = count;
3377 XSRETURN_YES;
3378 }
3379 else
3380 XSRETURN_NO;
3381}
3382
3383void
3384waiters (SV *self)
3385 PPCODE:
3386{
3387 AV *av = (AV *)SvRV (self);
3388 int wcount = AvFILLp (av) + 1 - 1;
3389
3390 if (GIMME_V == G_SCALAR)
3391 XPUSHs (sv_2mortal (newSViv (wcount)));
3392 else
3393 {
3394 int i;
3395 EXTEND (SP, wcount);
3396 for (i = 1; i <= wcount; ++i)
3397 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3398 }
3399}
3400
3401MODULE = Coro::State PACKAGE = Coro::Signal
3402
3403SV *
3404new (SV *klass)
3405 CODE:
3406 RETVAL = sv_bless (
3407 coro_waitarray_new (aTHX_ 0),
3408 GvSTASH (CvGV (cv))
3409 );
3410 OUTPUT:
3411 RETVAL
3412
3413void
3414wait (...)
3415 CODE:
3416 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3417
3418void
3419broadcast (SV *self)
3420 CODE:
3421{
3422 AV *av = (AV *)SvRV (self);
3423 coro_signal_wake (aTHX_ av, AvFILLp (av));
3424}
3425
3426void
3427send (SV *self)
3428 CODE:
3429{
3430 AV *av = (AV *)SvRV (self);
3431
3432 if (AvFILLp (av))
3433 coro_signal_wake (aTHX_ av, 1);
3434 else
3435 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3436}
3437
3438IV
3439awaited (SV *self)
3440 CODE:
3441 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3442 OUTPUT:
3443 RETVAL
3444
3445
3446MODULE = Coro::State PACKAGE = Coro::AnyEvent
3447
3448BOOT:
3449 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3450
3451void
3452_schedule (...)
3453 CODE:
3454{
3455 static int incede;
3456
3457 api_cede_notself (aTHX);
3458
3459 ++incede;
3460 while (coro_nready >= incede && api_cede (aTHX))
3461 ;
3462
3463 sv_setsv (sv_activity, &PL_sv_undef);
3464 if (coro_nready >= incede)
3465 {
3466 PUSHMARK (SP);
3467 PUTBACK;
3468 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3469 }
3470
3471 --incede;
3472}
3473
3474
3475MODULE = Coro::State PACKAGE = Coro::AIO
3476
3477void
3478_register (char *target, char *proto, SV *req)
3479 CODE:
3480{
3481 CV *req_cv = coro_sv_2cv (aTHX_ req);
3482 /* newXSproto doesn't return the CV on 5.8 */
3483 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3484 sv_setpv ((SV *)slf_cv, proto);
3485 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3486}
3487

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