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Comparing Coro/Coro/State.xs (file contents):
Revision 1.196 by root, Sat Oct 6 01:11:01 2007 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
52 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
53 61
54#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
55# ifndef PL_ppaddr 63# ifndef PL_ppaddr
56# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
57# endif 65# endif
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
75/* 5.8.7 */ 110/* 5.8.7 */
76#ifndef SvRV_set 111#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 113#endif
79 114
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif
87
88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89# undef CORO_STACKGUARD 116# undef CORO_STACKGUARD
90#endif 117#endif
91 118
92#ifndef CORO_STACKGUARD 119#ifndef CORO_STACKGUARD
… …
98# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
99#endif 126#endif
100 127
101/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
102 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
103#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
104#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
105 137
106#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
107 139
108#if __GNUC__ >= 3 140#if __GNUC__ >= 3
109# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
110# define BARRIER __asm__ __volatile__ ("" : : : "memory")
111# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
112#else 144#else
113# define attribute(x) 145# define attribute(x)
114# define BARRIER
115# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
116#endif 148#endif
117 149
118#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
119#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
120 152
121#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
122 154
123#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
124 157
125#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
126static perl_mutex coro_mutex; 159# if CORO_PTHREAD
127# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
128# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
129#else
130# define LOCK (void)0
131# define UNLOCK (void)0
132#endif 161# endif
162#endif
133 163
134/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
135struct io_state
136{
137 int errorno;
138 I32 laststype;
139 int laststatval;
140 Stat_t statcache;
141};
142 165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
169
170static U32 cctx_gen;
143static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
144static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
145static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
146static JMPENV *main_top_env; 174static JMPENV *main_top_env;
147static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
148static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
149 181
150static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
151static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
152 187
153/* async_pool helper stuff */ 188/* async_pool helper stuff */
154static SV *sv_pool_rss; 189static SV *sv_pool_rss;
155static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
156static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
157 199
158static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
159static int cctx_count, cctx_idle; 201static int cctx_count, cctx_idle;
160 202
161enum { 203enum {
… …
166 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
168}; 210};
169 211
170/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
171typedef struct coro_cctx { 213typedef struct coro_cctx
214{
172 struct coro_cctx *next; 215 struct coro_cctx *next;
173 216
174 /* the stack */ 217 /* the stack */
175 void *sptr; 218 void *sptr;
176 size_t ssize; 219 size_t ssize;
… …
179 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
180 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
181 JMPENV *top_env; 224 JMPENV *top_env;
182 coro_context cctx; 225 coro_context cctx;
183 226
227 U32 gen;
184#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
185 int valgrind_id; 229 int valgrind_id;
186#endif 230#endif
187 unsigned char flags; 231 unsigned char flags;
188} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
189 237
190enum { 238enum {
191 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
192 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
193 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
194 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
195}; 243};
196 244
197/* this is a structure representing a perl-level coroutine */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
198struct coro { 246typedef struct
199 /* the c coroutine allocated to this perl coroutine, if any */ 247{
200 coro_cctx *cctx; 248 SV *defsv;
201 249 AV *defav;
202 /* data associated with this coroutine (initial args) */ 250 SV *errsv;
203 AV *args; 251 SV *irsgv;
204 int refcnt; 252 HV *hinthv;
205 int flags; /* CF_ flags */
206
207 /* optionally saved, might be zero */
208 AV *defav; /* @_ */
209 SV *defsv; /* $_ */
210 SV *errsv; /* $@ */
211 SV *deffh; /* default filehandle */
212 SV *irssv; /* $/ */
213 SV *irssv_sv; /* real $/ cache */
214
215#define VAR(name,type) type name; 253#define VAR(name,type) type name;
216# include "state.h" 254# include "state.h"
217#undef VAR 255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
261struct coro {
262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx;
264
265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */
269
270 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
218 276
219 /* statistics */ 277 /* statistics */
220 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
221 279
222 /* coro process data */ 280 /* coro process data */
223 int prio; 281 int prio;
224 SV *throw; 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
225 284
226 /* async_pool */ 285 /* async_pool */
227 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
228 289
229 /* linked list */ 290 /* linked list */
230 struct coro *next, *prev; 291 struct coro *next, *prev;
231 HV *hv; /* the perl hash associated with this coro, if any */
232}; 292};
233 293
234typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
235typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
236 301
237/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
238 303
239#define PRIO_MAX 3 304#define PRIO_MAX 3
240#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
243#define PRIO_IDLE -3 308#define PRIO_IDLE -3
244#define PRIO_MIN -4 309#define PRIO_MIN -4
245 310
246/* for Coro.pm */ 311/* for Coro.pm */
247static SV *coro_current; 312static SV *coro_current;
313static SV *coro_readyhook;
248static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
249static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
250static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
251 318
252/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
253 320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
323{
324#if PERL_VERSION_ATLEAST (5,10,0)
325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
326 get_sv (name, create);
327#endif
328 return get_sv (name, create);
329}
330
254static AV * 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360static AV *
255coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
256{ 362{
257 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
258 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
259 365
260 newpadlist = newAV (); 366 newpadlist = newAV ();
261 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
262#if PERL_VERSION_ATLEAST (5,9,0) 368#if PERL_VERSION_ATLEAST (5,10,0)
263 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
264#else 370#else
265 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
266#endif 372#endif
267 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
268 --AvFILLp (padlist); 374 --AvFILLp (padlist);
269 375
270 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
271 av_store (newpadlist, 1, (SV *)newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
272 378
273 return newpadlist; 379 return newpadlist;
274} 380}
275 381
… …
305 411
306 /* casting is fun. */ 412 /* casting is fun. */
307 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
308 free_padlist (aTHX_ padlist); 414 free_padlist (aTHX_ padlist);
309 415
310 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
311 417
312 return 0; 418 return 0;
313} 419}
314 420
421#define CORO_MAGIC_type_cv 26
315#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
316 423
317static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 424static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0,
426 coro_cv_free
427};
318 428
319#define CORO_MAGIC(cv) \ 429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
320 SvMAGIC (cv) \ 431 ? SvMAGIC (sv) \
321 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 432 : mg_find (sv, type))
322 ? SvMAGIC (cv) \ 433
323 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
324 : 0 437 : 0)
325 438
326static struct coro * 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
327SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
328{ 444{
329 HV *stash; 445 HV *stash;
330 MAGIC *mg; 446 MAGIC *mg;
331 447
… …
341 /* very slow, but rare, check */ 457 /* very slow, but rare, check */
342 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
343 croak ("Coro::State object required"); 459 croak ("Coro::State object required");
344 } 460 }
345 461
346 mg = CORO_MAGIC (coro); 462 mg = CORO_MAGIC_state (coro);
347 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
348} 464}
349 465
350#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
351 467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
471
352/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
353static void 473static void
354get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
355{ 475{
356 MAGIC *mg = CORO_MAGIC (cv); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
357 AV *av; 477 AV *av;
358 478
359 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
360 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
361 else 481 else
362 { 482 {
363#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
364 /* this is probably cleaner, but also slower? */ 484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
365 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
366 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
367 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
368 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
369#else 490#else
370 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
371#endif 492#endif
372 } 493 }
373} 494}
374 495
375static void 496static void
376put_padlist (pTHX_ CV *cv) 497put_padlist (pTHX_ CV *cv)
377{ 498{
378 MAGIC *mg = CORO_MAGIC (cv); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
379 AV *av; 500 AV *av;
380 501
381 if (expect_false (!mg)) 502 if (expect_false (!mg))
382 { 503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
383 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
384 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
385 mg->mg_virtual = &vtbl_coro;
386 mg->mg_obj = (SV *)newAV ();
387 }
388 504
389 av = (AV *)mg->mg_obj; 505 av = (AV *)mg->mg_obj;
390 506
391 if (expect_false (AvFILLp (av) >= AvMAX (av))) 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
392 av_extend (av, AvMAX (av) + 1); 508 av_extend (av, AvMAX (av) + 1);
… …
397/** load & save, init *******************************************************/ 513/** load & save, init *******************************************************/
398 514
399static void 515static void
400load_perl (pTHX_ Coro__State c) 516load_perl (pTHX_ Coro__State c)
401{ 517{
518 perl_slots *slot = c->slot;
519 c->slot = 0;
520
521 PL_mainstack = c->mainstack;
522
523 GvSV (PL_defgv) = slot->defsv;
524 GvAV (PL_defgv) = slot->defav;
525 GvSV (PL_errgv) = slot->errsv;
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
402#define VAR(name,type) PL_ ## name = c->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
403# include "state.h" 530 # include "state.h"
404#undef VAR 531 #undef VAR
405
406 GvSV (PL_defgv) = c->defsv;
407 GvAV (PL_defgv) = c->defav;
408 GvSV (PL_errgv) = c->errsv;
409 GvSV (irsgv) = c->irssv_sv;
410 532
411 { 533 {
412 dSP; 534 dSP;
535
413 CV *cv; 536 CV *cv;
414 537
415 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
416 while (expect_true (cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
417 { 540 {
… …
420 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
421 } 544 }
422 545
423 PUTBACK; 546 PUTBACK;
424 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
425} 551}
426 552
427static void 553static void
428save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
429{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
430 { 559 {
431 dSP; 560 dSP;
432 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
433 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
434 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
452 581
453 if (expect_true (CvDEPTH (cv))) 582 if (expect_true (CvDEPTH (cv)))
454 { 583 {
455 EXTEND (SP, 3); 584 EXTEND (SP, 3);
456 PUSHs ((SV *)CvPADLIST (cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
457 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
458 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
459 588
460 CvDEPTH (cv) = 0; 589 CvDEPTH (cv) = 0;
461 get_padlist (aTHX_ cv); 590 get_padlist (aTHX_ cv);
462 } 591 }
… …
472 } 601 }
473 602
474 PUTBACK; 603 PUTBACK;
475 } 604 }
476 605
606 /* allocate some space on the context stack for our purposes */
607 /* we manually unroll here, as usually 2 slots is enough */
608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 {
612 int i;
613 for (i = 3; i < SLOT_COUNT; ++i)
614 CXINC;
615 }
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */
617
618 c->mainstack = PL_mainstack;
619
620 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622
477 c->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
478 c->defsv = DEFSV; 624 slot->defsv = DEFSV;
479 c->errsv = ERRSV; 625 slot->errsv = ERRSV;
480 c->irssv_sv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
481 628
482#define VAR(name,type)c->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
483# include "state.h" 630 # include "state.h"
484#undef VAR 631 #undef VAR
632 }
485} 633}
486 634
487/* 635/*
488 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
489 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
490 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
491 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
492 */ 640 */
493#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
494# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
495#else 643#else
496static void 644static void
497coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
498{ 646{
499 PL_curstackinfo = new_stackinfo(64, 6); 647 PL_curstackinfo = new_stackinfo(32, 8);
500 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
501 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
502 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
503 651
504 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
505 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
506 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
507 655
508 New(50,PL_tmps_stack,64,SV*); 656 New(50,PL_tmps_stack,32,SV*);
509 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
510 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
511 PL_tmps_max = 64; 659 PL_tmps_max = 32;
512 660
513 New(54,PL_markstack,16,I32); 661 New(54,PL_markstack,16,I32);
514 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
515 PL_markstack_max = PL_markstack + 16; 663 PL_markstack_max = PL_markstack + 16;
516 664
517#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
518 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
519#endif 667#endif
520 668
521 New(54,PL_scopestack,16,I32); 669 New(54,PL_scopestack,8,I32);
522 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
523 PL_scopestack_max = 16; 671 PL_scopestack_max = 8;
524 672
525 New(54,PL_savestack,64,ANY); 673 New(54,PL_savestack,24,ANY);
526 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
527 PL_savestack_max = 64; 675 PL_savestack_max = 24;
528 676
529#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
530 New(54,PL_retstack,4,OP*); 678 New(54,PL_retstack,4,OP*);
531 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
532 PL_retstack_max = 4; 680 PL_retstack_max = 4;
533#endif 681#endif
534} 682}
… …
536 684
537/* 685/*
538 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
539 */ 687 */
540static void 688static void
541coro_destroy_stacks (pTHX) 689coro_destruct_stacks (pTHX)
542{ 690{
543 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
544 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
545 693
546 while (PL_curstackinfo) 694 while (PL_curstackinfo)
… …
557 705
558 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
559 Safefree (PL_markstack); 707 Safefree (PL_markstack);
560 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
561 Safefree (PL_savestack); 709 Safefree (PL_savestack);
562#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
563 Safefree (PL_retstack); 711 Safefree (PL_retstack);
564#endif 712#endif
565} 713}
714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
566 723
567static size_t 724static size_t
568coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
569{ 726{
570 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
571 728
572 if (coro->mainstack) 729 if (coro->mainstack)
573 { 730 {
574 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
575 { 732 {
576 #define VAR(name,type)coro->name = PL_ ## name; 733 #define SYM(sym) PL_ ## sym
577 # include "state.h" 734 CORO_RSS;
578 #undef VAR 735 #undef SYM
579 } 736 }
580 737 else
581 rss += sizeof (coro->curstackinfo); 738 {
582 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 739 #define SYM(sym) coro->slot->sym
583 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
584 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 741 #undef SYM
585 rss += coro->tmps_max * sizeof (SV *); 742 }
586 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
587 rss += coro->scopestack_max * sizeof (I32);
588 rss += coro->savestack_max * sizeof (ANY);
589
590#if !PERL_VERSION_ATLEAST (5,9,0)
591 rss += coro->retstack_max * sizeof (OP *);
592#endif
593 } 743 }
594 744
595 return rss; 745 return rss;
596} 746}
597 747
598/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
599 749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753
754/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr)
759#endif
760
761/*
762 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide
765 * readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */
600static void 770static int
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{
773 const char *s = MgPV_nolen_const (mg);
774
775 if (*s == '_')
776 {
777 SV **svp = 0;
778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
787 }
788
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
792static int
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814}
815
816static int
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{
819 const char *s = MgPV_nolen_const (mg);
820
821 if (*s == '_')
822 {
823 SV **svp = 0;
824
825 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827
828 if (svp)
829 {
830 SV *old = *svp;
831 *svp = newSVsv (sv);
832 SvREFCNT_dec (old);
833 return 0;
834 }
835 }
836
837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
838}
839
840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
601coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
602{ 863{
603 /* 864 /*
604 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
605 */ 866 */
… …
607 868
608 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
609 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
610 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
611 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
612 PL_curpm = 0; 876 PL_curpm = 0;
613 PL_curpad = 0; 877 PL_curpad = 0;
614 PL_localizing = 0; 878 PL_localizing = 0;
615 PL_dirty = 0; 879 PL_dirty = 0;
616 PL_restartop = 0; 880 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0;
883#endif
884 PL_hints = 0;
885
886 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
617 889
618 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
619 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
620 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
621 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
622 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
623 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
624 897
625 { 898 {
626 dSP; 899 dSP;
627 LOGOP myop; 900 UNOP myop;
628 901
629 Zero (&myop, 1, LOGOP); 902 Zero (&myop, 1, UNOP);
630 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
631 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
632 906
633 PUSHMARK (SP); 907 PUSHMARK (SP);
634 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
635 PUTBACK; 909 PUTBACK;
636 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
637 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
638 SPAGAIN;
639 } 912 }
640 913
641 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 914 /* this newly created coroutine might be run on an existing cctx which most
642} 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
643 919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
644static void 932static void
645coro_destroy (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
646{ 934{
647 if (!IN_DESTRUCT) 935 if (!IN_DESTRUCT)
648 { 936 {
649 /* restore all saved variables and stuff */ 937 /* restore all saved variables and stuff */
650 LEAVE_SCOPE (0); 938 LEAVE_SCOPE (0);
… …
665 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
666 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
667 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
668 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
669 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
670 959
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
671 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
672 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
673 967
674 coro_destroy_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
675} 969}
676 970
677static void 971INLINE void
678free_coro_mortal (pTHX) 972free_coro_mortal (pTHX)
679{ 973{
680 if (expect_true (coro_mortal)) 974 if (expect_true (coro_mortal))
681 { 975 {
682 SvREFCNT_dec (coro_mortal); 976 SvREFCNT_dec (coro_mortal);
… …
687static int 981static int
688runops_trace (pTHX) 982runops_trace (pTHX)
689{ 983{
690 COP *oldcop = 0; 984 COP *oldcop = 0;
691 int oldcxix = -2; 985 int oldcxix = -2;
692 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
693 coro_cctx *cctx = coro->cctx;
694 986
695 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
696 { 988 {
697 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
698 990
699 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
700 { 992 {
701 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
702 { 994 {
703 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
704 SV **bot, **top; 996 SV **bot, **top;
705 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
706 SV **cb; 998 SV **cb;
… …
716 : cx->blk_gimme == G_SCALAR ? bot + 1 1008 : cx->blk_gimme == G_SCALAR ? bot + 1
717 : bot; 1009 : bot;
718 1010
719 av_extend (av, top - bot); 1011 av_extend (av, top - bot);
720 while (bot < top) 1012 while (bot < top)
721 av_push (av, SvREFCNT_inc (*bot++)); 1013 av_push (av, SvREFCNT_inc_NN (*bot++));
722 1014
723 PL_runops = RUNOPS_DEFAULT; 1015 PL_runops = RUNOPS_DEFAULT;
724 ENTER; 1016 ENTER;
725 SAVETMPS; 1017 SAVETMPS;
726 EXTEND (SP, 3); 1018 EXTEND (SP, 3);
… …
743 1035
744 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
745 { 1037 {
746 SV **cb; 1038 SV **cb;
747 1039
748 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
749 { 1041 {
750 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
751 1043
752 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
753 { 1045 {
754 runops_proc_t old_runops = PL_runops;
755 dSP; 1046 dSP;
756 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
757 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
758 1049
759 if (isGV (gv)) 1050 if (isGV (gv))
… …
764 SAVETMPS; 1055 SAVETMPS;
765 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
766 PUSHMARK (SP); 1057 PUSHMARK (SP);
767 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
768 PUSHs (fullname); 1059 PUSHs (fullname);
769 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
770 PUTBACK; 1061 PUTBACK;
771 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
772 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
773 SPAGAIN; 1064 SPAGAIN;
774 FREETMPS; 1065 FREETMPS;
… …
777 } 1068 }
778 1069
779 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
780 } 1071 }
781 1072
782 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
783 { 1074 {
784 dSP; 1075 dSP;
785 1076
786 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
787 ENTER; 1078 ENTER;
… …
806 1097
807 TAINT_NOT; 1098 TAINT_NOT;
808 return 0; 1099 return 0;
809} 1100}
810 1101
811/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static struct CoroSLF cctx_ssl_frame;
812/* _cctx_init should be careful, as it could be called at almost any time */ 1103
813/* during execution of a perl program */ 1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
814static void NOINLINE 1119static void NOINLINE
815prepare_cctx (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
816{ 1121{
817 dSP;
818 LOGOP myop;
819
820 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
821 1123
822 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
823 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
824 1126
825 Zero (&myop, 1, LOGOP); 1127 /* we already must be executing an SLF op, there is no other valid way
826 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
827 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
828 1131
829 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
830 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
831 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1134
832 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
833 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
834 PL_op = (OP *)&myop; 1137}
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1138
836 SPAGAIN; 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
837} 1144}
838 1145
839/* 1146/*
840 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
841 */ 1148 */
842static void 1149static void
843coro_run (void *arg) 1150cctx_run (void *arg)
844{ 1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
845 dTHX; 1158 dTHX;
846 1159
847 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1160 /* normally we would need to skip the entersub here */
848 UNLOCK; 1161 /* not doing so will re-execute it, which is exactly what we want */
849
850 /* we now skip the entersub that lead to transfer() */
851 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
852 1163
853 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
854 prepare_cctx (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
855 1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
856 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
857 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
858 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
859
860 /* 1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
861 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
862 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
863 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
864 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
865 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept
866 */ 1184 */
867 PL_top_env = main_top_env; 1185 PL_top_env = main_top_env;
868 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 }
869} 1188}
870 1189
871static coro_cctx * 1190static coro_cctx *
872cctx_new () 1191cctx_new ()
873{ 1192{
874 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 ();
875 void *stack_start; 1222 void *stack_start;
876 size_t stack_size; 1223 size_t stack_size;
877 1224
878 ++cctx_count;
879
880 Newz (0, cctx, 1, coro_cctx);
881
882#if HAVE_MMAP 1225#if HAVE_MMAP
883
884 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;
885 /* mmap supposedly does allocate-on-write for us */ 1227 /* mmap supposedly does allocate-on-write for us */
886 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
887 1229
888 if (cctx->sptr != (void *)-1) 1230 if (cctx->sptr != (void *)-1)
889 { 1231 {
890# if CORO_STACKGUARD 1232 #if CORO_STACKGUARD
891 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
892# endif 1234 #endif
893 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
894 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
895 cctx->flags |= CC_MAPPED; 1237 cctx->flags |= CC_MAPPED;
896 } 1238 }
897 else 1239 else
898#endif 1240#endif
899 { 1241 {
900 cctx->ssize = coro_stacksize * (long)sizeof (long); 1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
901 New (0, cctx->sptr, coro_stacksize, long); 1243 New (0, cctx->sptr, cctx_stacksize, long);
902 1244
903 if (!cctx->sptr) 1245 if (!cctx->sptr)
904 { 1246 {
905 perror ("FATAL: unable to allocate stack for coroutine"); 1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
906 _exit (EXIT_FAILURE); 1248 _exit (EXIT_FAILURE);
907 } 1249 }
908 1250
909 stack_start = cctx->sptr; 1251 stack_start = cctx->sptr;
910 stack_size = cctx->ssize; 1252 stack_size = cctx->ssize;
911 } 1253 }
912 1254
913 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
914 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);
915 1260
916 return cctx; 1261 return cctx;
917} 1262}
918 1263
919static void 1264static void
920cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
921{ 1266{
922 if (!cctx) 1267 if (!cctx)
923 return; 1268 return;
924 1269
1270 assert (cctx != cctx_current);//D temporary
1271
925 --cctx_count; 1272 --cctx_count;
1273 coro_destroy (&cctx->cctx);
926 1274
1275 /* coro_transfer creates new, empty cctx's */
1276 if (cctx->sptr)
1277 {
927#if CORO_USE_VALGRIND 1278 #if CORO_USE_VALGRIND
928 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
929#endif 1280 #endif
930 1281
931#if HAVE_MMAP 1282#if HAVE_MMAP
932 if (cctx->flags & CC_MAPPED) 1283 if (cctx->flags & CC_MAPPED)
933 munmap (cctx->sptr, cctx->ssize); 1284 munmap (cctx->sptr, cctx->ssize);
934 else 1285 else
935#endif 1286#endif
936 Safefree (cctx->sptr); 1287 Safefree (cctx->sptr);
1288 }
937 1289
938 Safefree (cctx); 1290 Safefree (cctx);
939} 1291}
940 1292
941/* wether this cctx should be destructed */ 1293/* wether this cctx should be destructed */
942#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1294#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
943 1295
944static coro_cctx * 1296static coro_cctx *
945cctx_get (pTHX) 1297cctx_get (pTHX)
946{ 1298{
947 while (expect_true (cctx_first)) 1299 while (expect_true (cctx_first))
… …
954 return cctx; 1306 return cctx;
955 1307
956 cctx_destroy (cctx); 1308 cctx_destroy (cctx);
957 } 1309 }
958 1310
959 return cctx_new (); 1311 return cctx_new_run ();
960} 1312}
961 1313
962static void 1314static void
963cctx_put (coro_cctx *cctx) 1315cctx_put (coro_cctx *cctx)
964{ 1316{
1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1318
965 /* free another cctx if overlimit */ 1319 /* free another cctx if overlimit */
966 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1320 if (expect_false (cctx_idle >= cctx_max_idle))
967 { 1321 {
968 coro_cctx *first = cctx_first; 1322 coro_cctx *first = cctx_first;
969 cctx_first = first->next; 1323 cctx_first = first->next;
970 --cctx_idle; 1324 --cctx_idle;
971 1325
… …
980/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
981 1335
982static void 1336static void
983transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
984{ 1338{
1339 /* TODO: throwing up here is considered harmful */
1340
985 if (expect_true (prev != next)) 1341 if (expect_true (prev != next))
986 { 1342 {
987 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
988 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
989 1345
990 if (expect_false (next->flags & CF_RUNNING)) 1346 if (expect_false (next->flags & CF_RUNNING))
991 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
992 1348
993 if (expect_false (next->flags & CF_DESTROYED)) 1349 if (expect_false (next->flags & CF_DESTROYED))
994 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
995 1351
1352#if !PERL_VERSION_ATLEAST (5,10,0)
996 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
997 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
998 } 1356 }
999} 1357}
1000 1358
1001/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
1002static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
1003transfer (pTHX_ struct coro *prev, struct coro *next) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1004{ 1362{
1005 dSTACKLEVEL; 1363 dSTACKLEVEL;
1006 1364
1007 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
1008 if (expect_false (!next)) 1366 if (expect_false (!prev))
1009 { 1367 {
1010 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1368 cctx_current->idle_sp = STACKLEVEL;
1011 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 */
1012 } 1370 }
1013 else if (expect_true (prev != next)) 1371 else if (expect_true (prev != next))
1014 { 1372 {
1015 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1016 1374
1017 if (expect_false (prev->flags & CF_NEW)) 1375 if (expect_false (prev->flags & CF_NEW))
1018 { 1376 {
1019 /* create a new empty context */ 1377 /* create a new empty/source context */
1020 Newz (0, prev->cctx, 1, coro_cctx);
1021 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1022 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1023 } 1380 }
1024 1381
1025 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
1026 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
1027 1384
1028 LOCK; 1385 /* first get rid of the old state */
1386 save_perl (aTHX_ prev);
1029 1387
1030 if (expect_false (next->flags & CF_NEW)) 1388 if (expect_false (next->flags & CF_NEW))
1031 { 1389 {
1032 /* need to start coroutine */ 1390 /* need to start coroutine */
1033 next->flags &= ~CF_NEW; 1391 next->flags &= ~CF_NEW;
1034 /* first get rid of the old state */
1035 save_perl (aTHX_ prev);
1036 /* setup coroutine call */ 1392 /* setup coroutine call */
1037 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1038 } 1394 }
1039 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 ))
1040 { 1406 {
1041 /* coroutine already started */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1042 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));
1043 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);
1044 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1045 1420
1046 prev__cctx = prev->cctx; 1421 ++next->usecount;
1047 1422
1048 /* possibly "free" the cctx */ 1423 cctx_prev = cctx_current;
1049 if (expect_true (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))
1050 { 1429 {
1051 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1430 cctx_prev->top_env = PL_top_env;
1052 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1431 PL_top_env = cctx_current->top_env;
1053 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1054 prev->cctx = 0;
1055
1056 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1057 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1058 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1059 next->cctx = cctx_get (aTHX);
1060
1061 cctx_put (prev__cctx);
1062 } 1433 }
1063 1434
1064 ++next->usecount; 1435 transfer_tail (aTHX);
1065
1066 if (expect_true (!next->cctx))
1067 next->cctx = cctx_get (aTHX);
1068
1069 if (expect_false (prev__cctx != next->cctx))
1070 {
1071 prev__cctx->top_env = PL_top_env;
1072 PL_top_env = next->cctx->top_env;
1073 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1074 }
1075
1076 free_coro_mortal (aTHX);
1077 UNLOCK;
1078
1079 if (expect_false (prev->throw || next->throw))
1080 {
1081 struct coro *coro = SvSTATE (coro_current);
1082
1083 if (coro->throw)
1084 {
1085 SV *exception = coro->throw;
1086 coro->throw = 0;
1087 sv_setsv (ERRSV, exception);
1088 croak (0);
1089 }
1090 }
1091 } 1436 }
1092} 1437}
1093 1438
1094struct transfer_args
1095{
1096 struct coro *prev, *next;
1097};
1098
1099#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1100#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1101 1441
1102/** high level stuff ********************************************************/ 1442/** high level stuff ********************************************************/
1103 1443
1104static int 1444static int
1105coro_state_destroy (pTHX_ struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
1106{ 1446{
1107 if (coro->flags & CF_DESTROYED) 1447 if (coro->flags & CF_DESTROYED)
1108 return 0; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1109 1452
1110 coro->flags |= CF_DESTROYED; 1453 coro->flags |= CF_DESTROYED;
1111 1454
1112 if (coro->flags & CF_READY) 1455 if (coro->flags & CF_READY)
1113 { 1456 {
1114 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1115 /* alternative: look through all ready queues and remove the coro */ 1458 /* alternative: look through all ready queues and remove the coro */
1116 LOCK;
1117 --coro_nready; 1459 --coro_nready;
1118 UNLOCK;
1119 } 1460 }
1120 else 1461 else
1121 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 */
1122 1463
1123 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1124 { 1465 {
1125 struct coro temp; 1466 struct coro temp;
1126 1467
1127 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1128 croak ("FATAL: tried to destroy currently running coroutine");
1129 1469
1130 save_perl (aTHX_ &temp); 1470 save_perl (aTHX_ &temp);
1131 load_perl (aTHX_ coro); 1471 load_perl (aTHX_ coro);
1132 1472
1133 coro_destroy (aTHX_ coro); 1473 coro_destruct (aTHX_ coro);
1134 1474
1135 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1475 load_perl (aTHX_ &temp);
1136 1476
1137 coro->mainstack = 0; 1477 coro->slot = 0;
1138 } 1478 }
1139 1479
1140 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1141 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1142 1484
1143 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1144 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1145 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1146 1488
… …
1184# define MGf_DUP 0 1526# define MGf_DUP 0
1185#endif 1527#endif
1186}; 1528};
1187 1529
1188static void 1530static void
1189prepare_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)
1190{ 1532{
1191 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
1192 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1193 TRANSFER_CHECK (*ta); 1535 TRANSFER_CHECK (*ta);
1194} 1536}
1195 1537
1196static void 1538static void
1197api_transfer (SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1198{ 1540{
1199 dTHX;
1200 struct transfer_args ta; 1541 struct coro_transfer_args ta;
1201 1542
1202 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1203 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);
1204} 1568}
1205 1569
1206/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1207 1571
1208static void 1572INLINE void
1209coro_enq (pTHX_ SV *coro_sv) 1573coro_enq (pTHX_ struct coro *coro)
1210{ 1574{
1211 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));
1212} 1576}
1213 1577
1214static SV * 1578INLINE SV *
1215coro_deq (pTHX_ int min_prio) 1579coro_deq (pTHX)
1216{ 1580{
1217 int prio = PRIO_MAX - PRIO_MIN; 1581 int prio;
1218 1582
1219 min_prio -= PRIO_MIN;
1220 if (min_prio < 0)
1221 min_prio = 0;
1222
1223 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1224 if (AvFILLp (coro_ready [prio]) >= 0) 1584 if (AvFILLp (coro_ready [prio]) >= 0)
1225 return av_shift (coro_ready [prio]); 1585 return av_shift (coro_ready [prio]);
1226 1586
1227 return 0; 1587 return 0;
1228} 1588}
1229 1589
1230static int 1590static int
1231api_ready (SV *coro_sv) 1591api_ready (pTHX_ SV *coro_sv)
1232{ 1592{
1233 dTHX;
1234 struct coro *coro; 1593 struct coro *coro;
1235 1594 SV *sv_hook;
1236 if (SvROK (coro_sv)) 1595 void (*xs_hook)(void);
1237 coro_sv = SvRV (coro_sv);
1238 1596
1239 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1240 1598
1241 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1242 return 0; 1600 return 0;
1243 1601
1244 coro->flags |= CF_READY; 1602 coro->flags |= CF_READY;
1245 1603
1246 LOCK; 1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1247 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro);
1248 ++coro_nready; 1608 ++coro_nready;
1249 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 ();
1250 1627
1251 return 1; 1628 return 1;
1252} 1629}
1253 1630
1254static int 1631static int
1255api_is_ready (SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1256{ 1633{
1257 dTHX;
1258 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1259} 1635}
1260 1636
1261static void 1637/* expects to own a reference to next->hv */
1638INLINE void
1262prepare_schedule (pTHX_ struct transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1263{ 1640{
1264 SV *prev_sv, *next_sv;
1265
1266 for (;;)
1267 {
1268 LOCK;
1269 next_sv = coro_deq (aTHX_ PRIO_MIN);
1270
1271 /* nothing to schedule: call the idle handler */
1272 if (expect_false (!next_sv))
1273 {
1274 dSP;
1275 UNLOCK;
1276
1277 ENTER;
1278 SAVETMPS;
1279
1280 PUSHMARK (SP);
1281 PUTBACK;
1282 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1283
1284 FREETMPS;
1285 LEAVE;
1286 continue;
1287 }
1288
1289 ta->next = SvSTATE (next_sv);
1290
1291 /* cannot transfer to destroyed coros, skip and look for next */
1292 if (expect_false (ta->next->flags & CF_DESTROYED))
1293 {
1294 UNLOCK;
1295 SvREFCNT_dec (next_sv);
1296 /* coro_nready is already taken care of by destroy */
1297 continue;
1298 }
1299
1300 --coro_nready;
1301 UNLOCK;
1302 break;
1303 }
1304
1305 /* free this only after the transfer */
1306 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1307 ta->prev = SvSTATE (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1308 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1309 assert (ta->next->flags & CF_READY); 1647
1310 ta->next->flags &= ~CF_READY;
1311 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1312 1649
1313 LOCK;
1314 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1315 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1316 UNLOCK;
1317} 1652}
1318 1653
1319static 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
1320prepare_cede (pTHX_ struct transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1321{ 1707{
1322 api_ready (coro_current); 1708 api_ready (aTHX_ coro_current);
1323 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
1324} 1710}
1325 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
1326static int 1745static int
1327prepare_cede_notself (pTHX_ struct transfer_args *ta) 1746api_cede (pTHX)
1328{ 1747{
1329 if (coro_nready) 1748 struct coro_transfer_args ta;
1330 { 1749
1331 SV *prev = SvRV (coro_current);
1332 prepare_schedule (aTHX_ ta); 1750 prepare_cede (aTHX_ &ta);
1333 api_ready (prev); 1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
1334 return 1; 1755 return 1;
1335 } 1756 }
1336 else 1757 else
1337 return 0; 1758 return 0;
1338} 1759}
1339 1760
1340static void
1341api_schedule (void)
1342{
1343 dTHX;
1344 struct transfer_args ta;
1345
1346 prepare_schedule (aTHX_ &ta);
1347 TRANSFER (ta);
1348}
1349
1350static int 1761static int
1351api_cede (void) 1762api_cede_notself (pTHX)
1352{ 1763{
1353 dTHX; 1764 if (coro_nready)
1765 {
1354 struct transfer_args ta; 1766 struct coro_transfer_args ta;
1355 1767
1356 prepare_cede (aTHX_ &ta); 1768 prepare_cede_notself (aTHX_ &ta);
1357
1358 if (expect_true (ta.prev != ta.next))
1359 {
1360 TRANSFER (ta); 1769 TRANSFER (ta, 1);
1361 return 1; 1770 return 1;
1362 } 1771 }
1363 else 1772 else
1364 return 0; 1773 return 0;
1365} 1774}
1366 1775
1367static int 1776static void
1368api_cede_notself (void)
1369{
1370 dTHX;
1371 struct transfer_args ta;
1372
1373 if (prepare_cede_notself (aTHX_ &ta))
1374 {
1375 TRANSFER (ta);
1376 return 1;
1377 }
1378 else
1379 return 0;
1380}
1381
1382static void
1383api_trace (SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1384{ 1778{
1385 dTHX;
1386 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1387 1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1388 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1389 { 1785 {
1390 if (!coro->cctx) 1786 if (!coro->cctx)
1391 coro->cctx = cctx_new (); 1787 coro->cctx = cctx_new_run ();
1392 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1393 croak ("cannot enable tracing on coroutine with custom stack"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1394 1790
1395 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1396 } 1792 }
1397 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1398 { 1794 {
1399 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1795 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1400 1796
1401 if (coro->flags & CF_RUNNING) 1797 if (coro->flags & CF_RUNNING)
1402 PL_runops = RUNOPS_DEFAULT; 1798 PL_runops = RUNOPS_DEFAULT;
1403 else 1799 else
1404 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;
1405 } 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 }
1406} 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 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
2378
2379 return newRV_noinc ((SV *)av);
2380}
2381
2382/* semaphore */
2383
2384static void
2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2386{
2387 SV *count_sv = AvARRAY (av)[0];
2388 IV count = SvIVX (count_sv);
2389
2390 count += adjust;
2391 SvIVX (count_sv) = count;
2392
2393 /* now wake up as many waiters as are expected to lock */
2394 while (count > 0 && AvFILLp (av) > 0)
2395 {
2396 SV *cb;
2397
2398 /* swap first two elements so we can shift a waiter */
2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2400 AvARRAY (av)[1] = count_sv;
2401 cb = av_shift (av);
2402
2403 if (SvOBJECT (cb))
2404 {
2405 api_ready (aTHX_ cb);
2406 --count;
2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
2416
2417 SvREFCNT_dec (cb);
2418 }
2419}
2420
2421static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2423{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2426}
2427
2428static int
2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2430{
2431 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0];
2433
2434 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW)
2436 return 0;
2437 else if (SvIVX (count_sv) > 0)
2438 {
2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2446 return 0;
2447 }
2448 else
2449 {
2450 int i;
2451 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */
2454
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current))
2457 return 1;
2458
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2460 return 1;
2461 }
2462}
2463
2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2478{
2479 AV *av = (AV *)SvRV (arg [0]);
2480
2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2482 {
2483 frame->data = (void *)av;
2484 frame->prepare = prepare_nop;
2485 }
2486 else
2487 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2496 }
2497}
2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2503 frame->check = slf_check_semaphore_down;
2504}
2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2585}
2586
2587/*****************************************************************************/
2588/* Coro::AIO */
2589
2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2591
2592/* helper storage struct */
2593struct io_state
2594{
2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
2599};
2600
2601static void
2602coro_aio_callback (pTHX_ CV *cv)
2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2614
2615 {
2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2617
2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
2669 dSP;
2670 int i;
2671
2672 EXTEND (SP, AvFILLp (state) + 1);
2673 for (i = 0; i <= AvFILLp (state); ++i)
2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2675
2676 PUTBACK;
2677 }
2678
2679 return 0;
2680}
2681
2682static void
2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2686 SV *coro_hv = SvRV (coro_current);
2687 struct coro *coro = SvSTATE_hv (coro_hv);
2688
2689 /* put our coroutine id on the state arg */
2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
2691
2692 /* first see whether we have a non-zero priority and set it as AIO prio */
2693 if (coro->prio)
2694 {
2695 dSP;
2696
2697 static SV *prio_cv;
2698 static SV *prio_sv;
2699
2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
2705
2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
2709
2710 PUTBACK;
2711 call_sv (prio_cv, G_VOID | G_DISCARD);
2712 }
2713
2714 /* now call the original request */
2715 {
2716 dSP;
2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
2719
2720 PUSHMARK (SP);
2721
2722 /* first push all args to the stack */
2723 EXTEND (SP, items + 1);
2724
2725 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]);
2727
2728 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730
2731 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 }
2735
2736 /* now that the requets is going, we loop toll we have a result */
2737 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req;
2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2750}
2751
2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
1407 2757
1408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1409 2759
1410PROTOTYPES: DISABLE 2760PROTOTYPES: DISABLE
1411 2761
1412BOOT: 2762BOOT:
1413{ 2763{
1414#ifdef USE_ITHREADS 2764#ifdef USE_ITHREADS
1415 MUTEX_INIT (&coro_mutex); 2765# if CORO_PTHREAD
2766 coro_thx = PERL_GET_CONTEXT;
2767# endif
1416#endif 2768#endif
1417 BOOT_PAGESIZE; 2769 BOOT_PAGESIZE;
2770
2771 cctx_current = cctx_new_empty ();
1418 2772
1419 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1420 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2775
2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2777 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2778 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2779
2780 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2781 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2782 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1421 2783
1422 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2784 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1423 2785
1424 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2786 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1425 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2787 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1430 main_top_env = PL_top_env; 2792 main_top_env = PL_top_env;
1431 2793
1432 while (main_top_env->je_prev) 2794 while (main_top_env->je_prev)
1433 main_top_env = main_top_env->je_prev; 2795 main_top_env = main_top_env->je_prev;
1434 2796
2797 {
2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2799
2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2802
2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2805 }
2806
1435 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
2808 coroapi.rev = CORO_API_REVISION;
2809
1436 coroapi.transfer = api_transfer; 2810 coroapi.transfer = api_transfer;
2811
2812 coroapi.sv_state = SvSTATE_;
2813 coroapi.execute_slf = api_execute_slf;
2814 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself;
2818
2819 {
2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2821
2822 if (!svp) croak ("Time::HiRes is required");
2823 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2824
2825 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2826 }
1437 2827
1438 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1439} 2829}
1440 2830
1441SV * 2831SV *
1442new (char *klass, ...) 2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
1443 CODE: 2835 CODE:
1444{ 2836{
1445 struct coro *coro; 2837 struct coro *coro;
2838 MAGIC *mg;
1446 HV *hv; 2839 HV *hv;
2840 CV *cb;
1447 int i; 2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
1448 2856
1449 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
1450 coro->args = newAV (); 2858 coro->args = newAV ();
1451 coro->flags = CF_NEW; 2859 coro->flags = CF_NEW;
1452 2860
1453 if (coro_first) coro_first->prev = coro; 2861 if (coro_first) coro_first->prev = coro;
1454 coro->next = coro_first; 2862 coro->next = coro_first;
1455 coro_first = coro; 2863 coro_first = coro;
1456 2864
1457 coro->hv = hv = newHV (); 2865 coro->hv = hv = newHV ();
1458 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2867 mg->mg_flags |= MGf_DUP;
1459 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1460 2869
2870 if (items > 1)
2871 {
1461 av_extend (coro->args, items - 1); 2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
1462 for (i = 1; i < items; i++) 2882 for (i = 2; i < items; i++)
1463 av_push (coro->args, newSVsv (ST (i))); 2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
1464} 2885}
1465 OUTPUT: 2886 OUTPUT:
1466 RETVAL 2887 RETVAL
1467 2888
1468# these not obviously related functions are all rolled into the same xs
1469# function to increase chances that they all will call transfer with the same
1470# stack offset
1471void 2889void
1472_set_stacklevel (...) 2890transfer (...)
1473 ALIAS: 2891 PROTOTYPE: $$
1474 Coro::State::transfer = 1 2892 CODE:
1475 Coro::schedule = 2 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1476 Coro::cede = 3
1477 Coro::cede_notself = 4
1478 CODE:
1479{
1480 struct transfer_args ta;
1481
1482 switch (ix)
1483 {
1484 case 0:
1485 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1486 ta.next = 0;
1487 break;
1488
1489 case 1:
1490 if (items != 2)
1491 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1492
1493 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494 break;
1495
1496 case 2:
1497 prepare_schedule (aTHX_ &ta);
1498 break;
1499
1500 case 3:
1501 prepare_cede (aTHX_ &ta);
1502 break;
1503
1504 case 4:
1505 if (!prepare_cede_notself (aTHX_ &ta))
1506 XSRETURN_EMPTY;
1507
1508 break;
1509 }
1510
1511 BARRIER;
1512 TRANSFER (ta);
1513
1514 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1515 XSRETURN_YES;
1516}
1517 2894
1518bool 2895bool
1519_destroy (SV *coro_sv) 2896_destroy (SV *coro_sv)
1520 CODE: 2897 CODE:
1521 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522 OUTPUT: 2899 OUTPUT:
1523 RETVAL 2900 RETVAL
1524 2901
1525void 2902void
1526_exit (code) 2903_exit (int code)
1527 int code
1528 PROTOTYPE: $ 2904 PROTOTYPE: $
1529 CODE: 2905 CODE:
1530 _exit (code); 2906 _exit (code);
1531 2907
2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
2926
1532int 2927int
1533cctx_stacksize (int new_stacksize = 0) 2928cctx_stacksize (int new_stacksize = 0)
2929 PROTOTYPE: ;$
1534 CODE: 2930 CODE:
1535 RETVAL = coro_stacksize; 2931 RETVAL = cctx_stacksize;
1536 if (new_stacksize) 2932 if (new_stacksize)
2933 {
1537 coro_stacksize = new_stacksize; 2934 cctx_stacksize = new_stacksize;
2935 ++cctx_gen;
2936 }
1538 OUTPUT: 2937 OUTPUT:
1539 RETVAL 2938 RETVAL
1540 2939
1541int 2940int
2941cctx_max_idle (int max_idle = 0)
2942 PROTOTYPE: ;$
2943 CODE:
2944 RETVAL = cctx_max_idle;
2945 if (max_idle > 1)
2946 cctx_max_idle = max_idle;
2947 OUTPUT:
2948 RETVAL
2949
2950int
1542cctx_count () 2951cctx_count ()
2952 PROTOTYPE:
1543 CODE: 2953 CODE:
1544 RETVAL = cctx_count; 2954 RETVAL = cctx_count;
1545 OUTPUT: 2955 OUTPUT:
1546 RETVAL 2956 RETVAL
1547 2957
1548int 2958int
1549cctx_idle () 2959cctx_idle ()
2960 PROTOTYPE:
1550 CODE: 2961 CODE:
1551 RETVAL = cctx_idle; 2962 RETVAL = cctx_idle;
1552 OUTPUT: 2963 OUTPUT:
1553 RETVAL 2964 RETVAL
1554 2965
1555void 2966void
1556list () 2967list ()
2968 PROTOTYPE:
1557 PPCODE: 2969 PPCODE:
1558{ 2970{
1559 struct coro *coro; 2971 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next) 2972 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv) 2973 if (coro->hv)
… …
1566call (Coro::State coro, SV *coderef) 2978call (Coro::State coro, SV *coderef)
1567 ALIAS: 2979 ALIAS:
1568 eval = 1 2980 eval = 1
1569 CODE: 2981 CODE:
1570{ 2982{
1571 if (coro->mainstack) 2983 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572 { 2984 {
1573 struct coro temp; 2985 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575 2986
1576 if (!(coro->flags & CF_RUNNING)) 2987 if (!(coro->flags & CF_RUNNING))
1577 { 2988 {
2989 PUTBACK;
1578 save_perl (aTHX_ &temp); 2990 save_perl (aTHX_ &temp);
1579 load_perl (aTHX_ coro); 2991 load_perl (aTHX_ coro);
1580 } 2992 }
1581 2993
1582 { 2994 {
1583 dSP; 2995 dSP;
1584 ENTER; 2996 ENTER;
1585 SAVETMPS; 2997 SAVETMPS;
2998 PUTBACK;
2999 PUSHSTACK;
1586 PUSHMARK (SP); 3000 PUSHMARK (SP);
1587 PUTBACK; 3001
1588 if (ix) 3002 if (ix)
1589 eval_sv (coderef, 0); 3003 eval_sv (coderef, 0);
1590 else 3004 else
1591 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3005 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3006
3007 POPSTACK;
1592 SPAGAIN; 3008 SPAGAIN;
1593 FREETMPS; 3009 FREETMPS;
1594 LEAVE; 3010 LEAVE;
1595 PUTBACK; 3011 PUTBACK;
1596 } 3012 }
1597 3013
1598 if (!(coro->flags & CF_RUNNING)) 3014 if (!(coro->flags & CF_RUNNING))
1599 { 3015 {
1600 save_perl (aTHX_ coro); 3016 save_perl (aTHX_ coro);
1601 load_perl (aTHX_ &temp); 3017 load_perl (aTHX_ &temp);
3018 SPAGAIN;
1602 } 3019 }
1603 } 3020 }
1604} 3021}
1605 3022
1606SV * 3023SV *
… …
1615 RETVAL = boolSV (coro->flags & ix); 3032 RETVAL = boolSV (coro->flags & ix);
1616 OUTPUT: 3033 OUTPUT:
1617 RETVAL 3034 RETVAL
1618 3035
1619void 3036void
3037throw (Coro::State self, SV *throw = &PL_sv_undef)
3038 PROTOTYPE: $;$
3039 CODE:
3040{
3041 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
3043 SvREFCNT_dec (*throwp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
3046
3047void
1620api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$
3050 C_ARGS: aTHX_ coro, flags
1621 3051
1622SV * 3052SV *
1623has_stack (Coro::State coro) 3053has_cctx (Coro::State coro)
1624 PROTOTYPE: $ 3054 PROTOTYPE: $
1625 CODE: 3055 CODE:
1626 RETVAL = boolSV (!!coro->cctx); 3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1627 OUTPUT: 3058 OUTPUT:
1628 RETVAL 3059 RETVAL
1629 3060
1630int 3061int
1631is_traced (Coro::State coro) 3062is_traced (Coro::State coro)
… …
1633 CODE: 3064 CODE:
1634 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3065 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1635 OUTPUT: 3066 OUTPUT:
1636 RETVAL 3067 RETVAL
1637 3068
1638IV 3069UV
1639rss (Coro::State coro) 3070rss (Coro::State coro)
1640 PROTOTYPE: $ 3071 PROTOTYPE: $
1641 ALIAS: 3072 ALIAS:
1642 usecount = 1 3073 usecount = 1
1643 CODE: 3074 CODE:
… …
1647 case 1: RETVAL = coro->usecount; break; 3078 case 1: RETVAL = coro->usecount; break;
1648 } 3079 }
1649 OUTPUT: 3080 OUTPUT:
1650 RETVAL 3081 RETVAL
1651 3082
3083void
3084force_cctx ()
3085 PROTOTYPE:
3086 CODE:
3087 cctx_current->idle_sp = 0;
3088
3089void
3090swap_defsv (Coro::State self)
3091 PROTOTYPE: $
3092 ALIAS:
3093 swap_defav = 1
3094 CODE:
3095 if (!self->slot)
3096 croak ("cannot swap state with coroutine that has no saved state,");
3097 else
3098 {
3099 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3101
3102 SV *tmp = *src; *src = *dst; *dst = tmp;
3103 }
3104
1652 3105
1653MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
1654 3107
1655BOOT: 3108BOOT:
1656{ 3109{
1657 int i; 3110 int i;
1658 3111
1659 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); 3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1660 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); 3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1661 av_async_pool = get_av ("Coro::async_pool", TRUE); 3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1662 3121
1663 coro_current = get_sv ("Coro::current", FALSE); 3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1664 SvREADONLY_on (coro_current); 3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1665 3126
1666 coro_stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
1667 3128
1668 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1669 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1670 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3131 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1671 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3132 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1674 3135
1675 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1676 coro_ready[i] = newAV (); 3137 coro_ready[i] = newAV ();
1677 3138
1678 { 3139 {
1679 SV *sv = perl_get_sv("Coro::API", 1); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1680 3141
1681 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
3143 coroapi.schedule_to = api_schedule_to;
1682 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
1683 coroapi.cede_notself = api_cede_notself; 3145 coroapi.cede_notself = api_cede_notself;
1684 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
1685 coroapi.is_ready = api_is_ready; 3147 coroapi.is_ready = api_is_ready;
1686 coroapi.nready = &coro_nready; 3148 coroapi.nready = coro_nready;
1687 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
1688 3150
1689 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
1690 sv_setiv (sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
1691 SvREADONLY_on (sv); 3153 SvREADONLY_on (sv);
1692 } 3154 }
1693} 3155}
3156
3157void
3158terminate (...)
3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
3163schedule (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3176
3177void
3178cede (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
3181
3182void
3183cede_notself (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
1694 3192
1695void 3193void
1696_set_current (SV *current) 3194_set_current (SV *current)
1697 PROTOTYPE: $ 3195 PROTOTYPE: $
1698 CODE: 3196 CODE:
1699 SvREFCNT_dec (SvRV (coro_current)); 3197 SvREFCNT_dec (SvRV (coro_current));
1700 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3198 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3199
3200void
3201_set_readyhook (SV *hook)
3202 PROTOTYPE: $
3203 CODE:
3204 SvREFCNT_dec (coro_readyhook);
3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1701 3206
1702int 3207int
1703prio (Coro::State coro, int newprio = 0) 3208prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$
1704 ALIAS: 3210 ALIAS:
1705 nice = 1 3211 nice = 1
1706 CODE: 3212 CODE:
1707{ 3213{
1708 RETVAL = coro->prio; 3214 RETVAL = coro->prio;
… …
1723 3229
1724SV * 3230SV *
1725ready (SV *self) 3231ready (SV *self)
1726 PROTOTYPE: $ 3232 PROTOTYPE: $
1727 CODE: 3233 CODE:
1728 RETVAL = boolSV (api_ready (self)); 3234 RETVAL = boolSV (api_ready (aTHX_ self));
1729 OUTPUT: 3235 OUTPUT:
1730 RETVAL 3236 RETVAL
1731 3237
1732int 3238int
1733nready (...) 3239nready (...)
… …
1736 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
1737 OUTPUT: 3243 OUTPUT:
1738 RETVAL 3244 RETVAL
1739 3245
1740void 3246void
1741throw (Coro::State self, SV *throw = &PL_sv_undef) 3247_pool_handler (...)
1742 PROTOTYPE: $;$ 3248 CODE:
1743 CODE: 3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1744 SvREFCNT_dec (self->throw);
1745 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1746 3250
1747# for async_pool speedup
1748void 3251void
1749_pool_1 (SV *cb) 3252async_pool (SV *cv, ...)
3253 PROTOTYPE: &@
3254 PPCODE:
3255{
3256 HV *hv = (HV *)av_pop (av_async_pool);
3257 AV *av = newAV ();
3258 SV *cb = ST (0);
3259 int i;
3260
3261 av_extend (av, items - 2);
3262 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264
3265 if ((SV *)hv == &PL_sv_undef)
3266 {
3267 PUSHMARK (SP);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3276 }
3277
3278 {
3279 struct coro *coro = SvSTATE_hv (hv);
3280
3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
3285 }
3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
3292 SvREFCNT_dec (hv);
3293}
3294
3295SV *
3296rouse_cb ()
3297 PROTOTYPE:
1750 CODE: 3298 CODE:
1751{ 3299 RETVAL = coro_new_rouse_cb (aTHX);
1752 struct coro *coro = SvSTATE (coro_current);
1753 HV *hv = (HV *)SvRV (coro_current);
1754 AV *defav = GvAV (PL_defgv);
1755 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1756 AV *invoke_av;
1757 int i, len;
1758
1759 if (!invoke)
1760 croak ("\3terminate\2\n");
1761
1762 SvREFCNT_dec (coro->saved_deffh);
1763 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1764
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 invoke_av = (AV *)SvRV (invoke);
1769 len = av_len (invoke_av);
1770
1771 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1772
1773 if (len > 0)
1774 {
1775 av_fill (defav, len - 1);
1776 for (i = 0; i < len; ++i)
1777 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1778 }
1779
1780 SvREFCNT_dec (invoke);
1781}
1782
1783void
1784_pool_2 (SV *cb)
1785 CODE:
1786{
1787 struct coro *coro = SvSTATE (coro_current);
1788
1789 sv_setsv (cb, &PL_sv_undef);
1790
1791 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1792 coro->saved_deffh = 0;
1793
1794 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1795 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1796 croak ("\3terminate\2\n");
1797
1798 av_clear (GvAV (PL_defgv));
1799 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1800 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1801
1802 coro->prio = 0;
1803
1804 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1805 api_trace (coro_current, 0);
1806
1807 av_push (av_async_pool, newSVsv (coro_current));
1808}
1809
1810
1811MODULE = Coro::State PACKAGE = Coro::AIO
1812
1813SV *
1814_get_state ()
1815 CODE:
1816{
1817 struct io_state *data;
1818
1819 RETVAL = newSV (sizeof (struct io_state));
1820 data = (struct io_state *)SvPVX (RETVAL);
1821 SvCUR_set (RETVAL, sizeof (struct io_state));
1822 SvPOK_only (RETVAL);
1823
1824 data->errorno = errno;
1825 data->laststype = PL_laststype;
1826 data->laststatval = PL_laststatval;
1827 data->statcache = PL_statcache;
1828}
1829 OUTPUT: 3300 OUTPUT:
1830 RETVAL 3301 RETVAL
1831 3302
1832void 3303void
1833_set_state (char *data_) 3304rouse_wait (...)
1834 PROTOTYPE: $ 3305 PROTOTYPE: ;$
3306 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3308
3309
3310MODULE = Coro::State PACKAGE = PerlIO::cede
3311
3312BOOT:
3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3314
3315
3316MODULE = Coro::State PACKAGE = Coro::Semaphore
3317
3318SV *
3319new (SV *klass, SV *count = 0)
1835 CODE: 3320 CODE:
1836{ 3321 RETVAL = sv_bless (
1837 struct io_state *data = (void *)data_; 3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3323 GvSTASH (CvGV (cv))
3324 );
3325 OUTPUT:
3326 RETVAL
1838 3327
1839 errno = data->errorno; 3328# helper for Coro::Channel
1840 PL_laststype = data->laststype; 3329SV *
1841 PL_laststatval = data->laststatval; 3330_alloc (int count)
1842 PL_statcache = data->statcache; 3331 CODE:
1843} 3332 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT:
3334 RETVAL
1844 3335
3336SV *
3337count (SV *self)
3338 CODE:
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT:
3341 RETVAL
3342
3343void
3344up (SV *self, int adjust = 1)
3345 ALIAS:
3346 adjust = 1
3347 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3349
3350void
3351down (...)
3352 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3359
3360void
3361try (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 SV *count_sv = AvARRAY (av)[0];
3366 IV count = SvIVX (count_sv);
3367
3368 if (count > 0)
3369 {
3370 --count;
3371 SvIVX (count_sv) = count;
3372 XSRETURN_YES;
3373 }
3374 else
3375 XSRETURN_NO;
3376}
3377
3378void
3379waiters (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
3384
3385 if (GIMME_V == G_SCALAR)
3386 XPUSHs (sv_2mortal (newSViv (wcount)));
3387 else
3388 {
3389 int i;
3390 EXTEND (SP, wcount);
3391 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 }
3394}
3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
3416{
3417 AV *av = (AV *)SvRV (self);
3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
3419}
3420
3421void
3422send (SV *self)
3423 CODE:
3424{
3425 AV *av = (AV *)SvRV (self);
3426
3427 if (AvFILLp (av))
3428 coro_signal_wake (aTHX_ av, 1);
3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
3439
3440
3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
3442
3443BOOT:
3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3445
3446void
3447_schedule (...)
3448 CODE:
3449{
3450 static int incede;
3451
3452 api_cede_notself (aTHX);
3453
3454 ++incede;
3455 while (coro_nready >= incede && api_cede (aTHX))
3456 ;
3457
3458 sv_setsv (sv_activity, &PL_sv_undef);
3459 if (coro_nready >= incede)
3460 {
3461 PUSHMARK (SP);
3462 PUTBACK;
3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3464 }
3465
3466 --incede;
3467}
3468
3469
3470MODULE = Coro::State PACKAGE = Coro::AIO
3471
3472void
3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
3482

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