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Comparing Coro/Coro/State.xs (file contents):
Revision 1.220 by root, Thu Jan 10 05:43:14 2008 UTC vs.
Revision 1.323 by root, Sat Nov 22 06:03:10 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#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
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
55 61
56#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr 63# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
59# endif 65# endif
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 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
77/* 5.8.7 */ 110/* 5.8.7 */
78#ifndef SvRV_set 111#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 113#endif
81 114
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 116# undef CORO_STACKGUARD
92#endif 117#endif
93 118
94#ifndef CORO_STACKGUARD 119#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 126#endif
102 127
103/* 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
104 * 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
105#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
106#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
107 137
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 139
110#if __GNUC__ >= 3 140#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
114#else 144#else
115# define attribute(x) 145# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
118#endif 148#endif
119 149
120#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
122 152
123#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
124 154
125#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
126 157
127#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 159# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 160static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 161# endif
162#endif
135 163
136/* helper storage struct for Coro::AIO */ 164static double (*nvtime)(); /* so why doesn't it take void? */
137struct io_state
138{
139 int errorno;
140 I32 laststype;
141 int laststatval;
142 Stat_t statcache;
143};
144 165
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;
145static size_t coro_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
146static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
147static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env; 174static JMPENV *main_top_env;
149static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
150static volatile 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 */
151 180
152static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook; 183static SV *rv_diehook;
155static SV *rv_warnhook; 184static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
157 186
158/* async_pool helper stuff */ 187/* async_pool helper stuff */
159static SV *sv_pool_rss; 188static SV *sv_pool_rss;
160static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
161static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
195
196/* Coro::AnyEvent */
197static SV *sv_activity;
162 198
163static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
164static int cctx_count, cctx_idle; 200static int cctx_count, cctx_idle;
165 201
166enum { 202enum {
… …
171 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173}; 209};
174 210
175/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
176typedef struct coro_cctx { 212typedef struct coro_cctx
213{
177 struct coro_cctx *next; 214 struct coro_cctx *next;
178 215
179 /* the stack */ 216 /* the stack */
180 void *sptr; 217 void *sptr;
181 size_t ssize; 218 size_t ssize;
… …
184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 221 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 222 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
186 JMPENV *top_env; 223 JMPENV *top_env;
187 coro_context cctx; 224 coro_context cctx;
188 225
226 U32 gen;
189#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
190 int valgrind_id; 228 int valgrind_id;
191#endif 229#endif
192 unsigned char flags; 230 unsigned char flags;
193} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
194 236
195enum { 237enum {
196 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
197 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
198 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
200}; 242};
201 243
202/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct { 245typedef struct
246{
204 SV *defsv; 247 SV *defsv;
205 AV *defav; 248 AV *defav;
206 SV *errsv; 249 SV *errsv;
207 SV *irsgv; 250 SV *irsgv;
208#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
212 255
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214 257
215/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
216struct coro { 259struct coro {
217 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
218 coro_cctx *cctx; 261 coro_cctx *cctx;
219 262
220 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
221 AV *mainstack; 265 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
223 267
268 CV *startcv; /* the CV to execute */
224 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
225 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
226 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
228 274
229 /* statistics */ 275 /* statistics */
230 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
231 277
232 /* coro process data */ 278 /* coro process data */
233 int prio; 279 int prio;
234 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
235 282
236 /* async_pool */ 283 /* async_pool */
237 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
238 287
239 /* linked list */ 288 /* linked list */
240 struct coro *next, *prev; 289 struct coro *next, *prev;
241}; 290};
242 291
243typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
244typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
245 299
246/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
247 301
248#define PRIO_MAX 3 302#define PRIO_MAX 3
249#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
252#define PRIO_IDLE -3 306#define PRIO_IDLE -3
253#define PRIO_MIN -4 307#define PRIO_MIN -4
254 308
255/* for Coro.pm */ 309/* for Coro.pm */
256static SV *coro_current; 310static SV *coro_current;
311static SV *coro_readyhook;
257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
259static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
260 316
261/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
262 318
263static SV * 319static SV *
264coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
265{ 321{
266#if PERL_VERSION_ATLEAST (5,9,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
267 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
268 get_sv (name, create); 324 get_sv (name, create);
269#endif 325#endif
270 return get_sv (name, create); 326 return get_sv (name, create);
271} 327}
272 328
273static AV * 329static AV *
274coro_get_av (pTHX_ const char *name, int create) 330coro_get_av (pTHX_ const char *name, int create)
275{ 331{
276#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
277 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
278 get_av (name, create); 334 get_av (name, create);
279#endif 335#endif
280 return get_av (name, create); 336 return get_av (name, create);
281} 337}
282 338
283static HV * 339static HV *
284coro_get_hv (pTHX_ const char *name, int create) 340coro_get_hv (pTHX_ const char *name, int create)
285{ 341{
286#if PERL_VERSION_ATLEAST (5,9,0) 342#if PERL_VERSION_ATLEAST (5,10,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 343 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_hv (name, create); 344 get_hv (name, create);
289#endif 345#endif
290 return get_hv (name, create); 346 return get_hv (name, create);
291} 347}
292 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
293static AV * 358static AV *
294coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
295{ 360{
296 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
297 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
298 363
299 newpadlist = newAV (); 364 newpadlist = newAV ();
300 AvREAL_off (newpadlist); 365 AvREAL_off (newpadlist);
301#if PERL_VERSION_ATLEAST (5,9,0) 366#if PERL_VERSION_ATLEAST (5,10,0)
302 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 367 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303#else 368#else
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305#endif 370#endif
306 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 371 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307 --AvFILLp (padlist); 372 --AvFILLp (padlist);
308 373
309 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 374 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310 av_store (newpadlist, 1, (SV *)newpad); 375 av_store (newpadlist, 1, (SV *)newpad);
311 376
312 return newpadlist; 377 return newpadlist;
313} 378}
314 379
… …
344 409
345 /* casting is fun. */ 410 /* casting is fun. */
346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 411 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347 free_padlist (aTHX_ padlist); 412 free_padlist (aTHX_ padlist);
348 413
414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
415
349 return 0; 416 return 0;
350} 417}
351 418
352#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
353#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
354 421
355static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
356 0, 0, 0, 0, 423 0, 0, 0, 0,
357 coro_cv_free 424 coro_cv_free
358}; 425};
359 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
360#define CORO_MAGIC(sv,type) \ 432#define CORO_MAGIC(sv, type) \
361 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
362 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
363 ? SvMAGIC (sv) \
364 : mg_find (sv, type) \
365 : 0 435 : 0)
366 436
367#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
368#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
369 439
370static struct coro * 440INLINE struct coro *
371SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
372{ 442{
373 HV *stash; 443 HV *stash;
374 MAGIC *mg; 444 MAGIC *mg;
375 445
… …
390 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
391 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
392} 462}
393 463
394#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
395 469
396/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
397static void 471static void
398get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
399{ 473{
… …
403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 477 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 478 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405 else 479 else
406 { 480 {
407#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
408 /* this is probably cleaner, but also slower? */ 482 /* this is probably cleaner? but also slower! */
483 /* in practise, it seems to be less stable */
409 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
410 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
411 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
412 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
413#else 488#else
414 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
415#endif 490#endif
416 } 491 }
417} 492}
418 493
419static void 494static void
… …
465 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
466 } 541 }
467 542
468 PUTBACK; 543 PUTBACK;
469 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
470} 548}
471 549
472static void 550static void
473save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
474{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
475 { 556 {
476 dSP; 557 dSP;
477 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
478 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
479 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
497 578
498 if (expect_true (CvDEPTH (cv))) 579 if (expect_true (CvDEPTH (cv)))
499 { 580 {
500 EXTEND (SP, 3); 581 EXTEND (SP, 3);
501 PUSHs ((SV *)CvPADLIST (cv)); 582 PUSHs ((SV *)CvPADLIST (cv));
502 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 583 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503 PUSHs ((SV *)cv); 584 PUSHs ((SV *)cv);
504 585
505 CvDEPTH (cv) = 0; 586 CvDEPTH (cv) = 0;
506 get_padlist (aTHX_ cv); 587 get_padlist (aTHX_ cv);
507 } 588 }
… …
546 #undef VAR 627 #undef VAR
547 } 628 }
548} 629}
549 630
550/* 631/*
551 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
552 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
553 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
554 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
555 */ 636 */
556#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
557# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
558#else 639#else
559static void 640static void
560coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
561{ 642{
562 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
587 668
588 New(54,PL_savestack,24,ANY); 669 New(54,PL_savestack,24,ANY);
589 PL_savestack_ix = 0; 670 PL_savestack_ix = 0;
590 PL_savestack_max = 24; 671 PL_savestack_max = 24;
591 672
592#if !PERL_VERSION_ATLEAST (5,9,0) 673#if !PERL_VERSION_ATLEAST (5,10,0)
593 New(54,PL_retstack,4,OP*); 674 New(54,PL_retstack,4,OP*);
594 PL_retstack_ix = 0; 675 PL_retstack_ix = 0;
595 PL_retstack_max = 4; 676 PL_retstack_max = 4;
596#endif 677#endif
597} 678}
… …
599 680
600/* 681/*
601 * destroy the stacks, the callchain etc... 682 * destroy the stacks, the callchain etc...
602 */ 683 */
603static void 684static void
604coro_destroy_stacks (pTHX) 685coro_destruct_stacks (pTHX)
605{ 686{
606 while (PL_curstackinfo->si_next) 687 while (PL_curstackinfo->si_next)
607 PL_curstackinfo = PL_curstackinfo->si_next; 688 PL_curstackinfo = PL_curstackinfo->si_next;
608 689
609 while (PL_curstackinfo) 690 while (PL_curstackinfo)
… …
620 701
621 Safefree (PL_tmps_stack); 702 Safefree (PL_tmps_stack);
622 Safefree (PL_markstack); 703 Safefree (PL_markstack);
623 Safefree (PL_scopestack); 704 Safefree (PL_scopestack);
624 Safefree (PL_savestack); 705 Safefree (PL_savestack);
625#if !PERL_VERSION_ATLEAST (5,9,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
626 Safefree (PL_retstack); 707 Safefree (PL_retstack);
627#endif 708#endif
628} 709}
710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
629 719
630static size_t 720static size_t
631coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
632{ 722{
633 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
634 724
635 if (coro->mainstack) 725 if (coro->mainstack)
636 { 726 {
637 perl_slots tmp_slot;
638 perl_slots *slot;
639
640 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
641 { 728 {
642 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
643 730 CORO_RSS;
644 #define VAR(name,type) slot->name = PL_ ## name;
645 # include "state.h"
646 #undef VAR 731 #undef SYM
647 } 732 }
648 else 733 else
649 slot = coro->slot; 734 {
650 735 #define SYM(sym) coro->slot->sym
651 rss += sizeof (slot->curstackinfo); 736 CORO_RSS;
652 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 #undef SYM
653 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 }
654 rss += slot->tmps_max * sizeof (SV *);
655 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656 rss += slot->scopestack_max * sizeof (I32);
657 rss += slot->savestack_max * sizeof (ANY);
658
659#if !PERL_VERSION_ATLEAST (5,9,0)
660 rss += slot->retstack_max * sizeof (OP *);
661#endif
662 } 739 }
663 740
664 return rss; 741 return rss;
665} 742}
666 743
667/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
668 745
669static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
670static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 747static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
748static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
749
750/* apparently < 5.8.8 */
751#ifndef MgPV_nolen_const
752#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
753 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
754 (const char*)(mg)->mg_ptr)
755#endif
671 756
672/* 757/*
673 * This overrides the default magic get method of %SIG elements. 758 * This overrides the default magic get method of %SIG elements.
674 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 759 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
675 * and instead of tryign to save and restore the hash elements, we just provide 760 * and instead of tryign to save and restore the hash elements, we just provide
… …
683{ 768{
684 const char *s = MgPV_nolen_const (mg); 769 const char *s = MgPV_nolen_const (mg);
685 770
686 if (*s == '_') 771 if (*s == '_')
687 { 772 {
688 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 773 SV **svp = 0;
689 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
781 return 0;
782 }
690 } 783 }
691 784
692 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 785 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
786}
787
788static int
789coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
790{
791 const char *s = MgPV_nolen_const (mg);
792
793 if (*s == '_')
794 {
795 SV **svp = 0;
796
797 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799
800 if (svp)
801 {
802 SV *old = *svp;
803 *svp = 0;
804 SvREFCNT_dec (old);
805 return 0;
806 }
807 }
808
809 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
693} 810}
694 811
695static int 812static int
696coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 813coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
697{ 814{
… …
707 if (svp) 824 if (svp)
708 { 825 {
709 SV *old = *svp; 826 SV *old = *svp;
710 *svp = newSVsv (sv); 827 *svp = newSVsv (sv);
711 SvREFCNT_dec (old); 828 SvREFCNT_dec (old);
712 return; 829 return 0;
713 } 830 }
714 } 831 }
715 832
716 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
717} 834}
718 835
719static void 836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
720coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
721{ 859{
722 /* 860 /*
723 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
724 */ 862 */
… …
731 PL_curpm = 0; 869 PL_curpm = 0;
732 PL_curpad = 0; 870 PL_curpad = 0;
733 PL_localizing = 0; 871 PL_localizing = 0;
734 PL_dirty = 0; 872 PL_dirty = 0;
735 PL_restartop = 0; 873 PL_restartop = 0;
874#if PERL_VERSION_ATLEAST (5,10,0)
875 PL_parser = 0;
876#endif
736 877
737 /* recreate the die/warn hooks */ 878 /* recreate the die/warn hooks */
738 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 879 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
739 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 880 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
740 881
741 GvSV (PL_defgv) = newSV (0); 882 GvSV (PL_defgv) = newSV (0);
742 GvAV (PL_defgv) = coro->args; coro->args = 0; 883 GvAV (PL_defgv) = coro->args; coro->args = 0;
743 GvSV (PL_errgv) = newSV (0); 884 GvSV (PL_errgv) = newSV (0);
744 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 885 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
745 PL_rs = newSVsv (GvSV (irsgv)); 886 PL_rs = newSVsv (GvSV (irsgv));
746 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
747 888
748 { 889 {
749 dSP; 890 dSP;
750 LOGOP myop; 891 UNOP myop;
751 892
752 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
753 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
754 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
755 897
756 PUSHMARK (SP); 898 PUSHMARK (SP);
757 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
758 PUTBACK; 900 PUTBACK;
759 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
760 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
761 SPAGAIN;
762 } 903 }
763 904
764 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
765 * likely was suspended in set_stacklevel, called from entersub. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
766 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
767 * so we ENTER here for symmetry
768 */ 907 */
769 ENTER; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
770} 909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
771 910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
921}
922
772static void 923static void
773coro_destroy (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
774{ 925{
775 if (!IN_DESTRUCT) 926 if (!IN_DESTRUCT)
776 { 927 {
777 /* restore all saved variables and stuff */ 928 /* restore all saved variables and stuff */
778 LEAVE_SCOPE (0); 929 LEAVE_SCOPE (0);
… …
798 949
799 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
800 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
801 952
802 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
803 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
804 957
805 coro_destroy_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
806} 959}
807 960
808static void 961INLINE void
809free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
810{ 963{
811 if (expect_true (coro_mortal)) 964 if (expect_true (coro_mortal))
812 { 965 {
813 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
… …
818static int 971static int
819runops_trace (pTHX) 972runops_trace (pTHX)
820{ 973{
821 COP *oldcop = 0; 974 COP *oldcop = 0;
822 int oldcxix = -2; 975 int oldcxix = -2;
823 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
824 coro_cctx *cctx = coro->cctx;
825 976
826 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
827 { 978 {
828 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
829 980
830 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
831 { 982 {
832 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
833 { 984 {
834 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
835 SV **bot, **top; 986 SV **bot, **top;
836 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
837 SV **cb; 988 SV **cb;
… …
847 : cx->blk_gimme == G_SCALAR ? bot + 1 998 : cx->blk_gimme == G_SCALAR ? bot + 1
848 : bot; 999 : bot;
849 1000
850 av_extend (av, top - bot); 1001 av_extend (av, top - bot);
851 while (bot < top) 1002 while (bot < top)
852 av_push (av, SvREFCNT_inc (*bot++)); 1003 av_push (av, SvREFCNT_inc_NN (*bot++));
853 1004
854 PL_runops = RUNOPS_DEFAULT; 1005 PL_runops = RUNOPS_DEFAULT;
855 ENTER; 1006 ENTER;
856 SAVETMPS; 1007 SAVETMPS;
857 EXTEND (SP, 3); 1008 EXTEND (SP, 3);
… …
874 1025
875 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
876 { 1027 {
877 SV **cb; 1028 SV **cb;
878 1029
879 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
880 { 1031 {
881 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
882 1033
883 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
884 { 1035 {
885 runops_proc_t old_runops = PL_runops;
886 dSP; 1036 dSP;
887 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
888 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
889 1039
890 if (isGV (gv)) 1040 if (isGV (gv))
… …
895 SAVETMPS; 1045 SAVETMPS;
896 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
897 PUSHMARK (SP); 1047 PUSHMARK (SP);
898 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
899 PUSHs (fullname); 1049 PUSHs (fullname);
900 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
901 PUTBACK; 1051 PUTBACK;
902 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
903 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
904 SPAGAIN; 1054 SPAGAIN;
905 FREETMPS; 1055 FREETMPS;
… …
908 } 1058 }
909 1059
910 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
911 } 1061 }
912 1062
913 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
914 { 1064 {
915 dSP; 1065 dSP;
916 1066
917 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
918 ENTER; 1068 ENTER;
… …
937 1087
938 TAINT_NOT; 1088 TAINT_NOT;
939 return 0; 1089 return 0;
940} 1090}
941 1091
942/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
943/* _cctx_init should be careful, as it could be called at almost any time */ 1093
944/* during execution of a perl program */ 1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
945static void NOINLINE 1109static void NOINLINE
946cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
947{ 1111{
948 dSP;
949 LOGOP myop;
950
951 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
952 1113
953 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
954 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
955 1116
956 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
957 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
958 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
959 1121
960 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
961 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
962 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
963 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
964 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
965 PL_op = (OP *)&myop; 1127}
966 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
967 SPAGAIN; 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
968} 1134}
969 1135
970/* 1136/*
971 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
972 */ 1138 */
973static void 1139static void
974cctx_run (void *arg) 1140cctx_run (void *arg)
975{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
976 dTHX; 1148 dTHX;
977 1149
978 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
979 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
980
981 /* we now skip the entersub that lead to transfer() */
982 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
983 1153
984 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
985 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
986 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
987 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
988 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
989 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
990
991 /* 1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1167
1168 /*
992 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
993 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
994 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
995 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
996 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
997 */ 1174 */
998 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
999 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
1000} 1178}
1001 1179
1002static coro_cctx * 1180static coro_cctx *
1003cctx_new () 1181cctx_new ()
1004{ 1182{
1005 coro_cctx *cctx; 1183 coro_cctx *cctx;
1184
1185 ++cctx_count;
1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1006 void *stack_start; 1212 void *stack_start;
1007 size_t stack_size; 1213 size_t stack_size;
1008 1214
1009 ++cctx_count;
1010
1011 Newz (0, cctx, 1, coro_cctx);
1012
1013#if HAVE_MMAP 1215#if HAVE_MMAP
1014 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1015 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
1016 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1017 1219
1018 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1019 { 1221 {
1020# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
1021 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1022# endif 1224 #endif
1023 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1024 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1025 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
1026 } 1228 }
1027 else 1229 else
1028#endif 1230#endif
1029 { 1231 {
1030 cctx->ssize = coro_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1031 New (0, cctx->sptr, coro_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
1032 1234
1033 if (!cctx->sptr) 1235 if (!cctx->sptr)
1034 { 1236 {
1035 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1036 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
1037 } 1239 }
1038 1240
1039 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
1040 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
1041 } 1243 }
1042 1244
1043 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
1044 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1045 1250
1046 return cctx; 1251 return cctx;
1047} 1252}
1048 1253
… …
1050cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1051{ 1256{
1052 if (!cctx) 1257 if (!cctx)
1053 return; 1258 return;
1054 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1055 --cctx_count; 1262 --cctx_count;
1263 coro_destroy (&cctx->cctx);
1056 1264
1265 /* coro_transfer creates new, empty cctx's */
1266 if (cctx->sptr)
1267 {
1057#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
1058 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1059#endif 1270 #endif
1060 1271
1061#if HAVE_MMAP 1272#if HAVE_MMAP
1062 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
1063 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
1064 else 1275 else
1065#endif 1276#endif
1066 Safefree (cctx->sptr); 1277 Safefree (cctx->sptr);
1278 }
1067 1279
1068 Safefree (cctx); 1280 Safefree (cctx);
1069} 1281}
1070 1282
1071/* wether this cctx should be destructed */ 1283/* wether this cctx should be destructed */
1072#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1284#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1073 1285
1074static coro_cctx * 1286static coro_cctx *
1075cctx_get (pTHX) 1287cctx_get (pTHX)
1076{ 1288{
1077 while (expect_true (cctx_first)) 1289 while (expect_true (cctx_first))
… …
1084 return cctx; 1296 return cctx;
1085 1297
1086 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
1087 } 1299 }
1088 1300
1089 return cctx_new (); 1301 return cctx_new_run ();
1090} 1302}
1091 1303
1092static void 1304static void
1093cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
1094{ 1306{
1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1308
1095 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
1096 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
1097 { 1311 {
1098 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
1099 cctx_first = first->next; 1313 cctx_first = first->next;
1100 --cctx_idle; 1314 --cctx_idle;
1101 1315
… …
1110/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1111 1325
1112static void 1326static void
1113transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1114{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1115 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1116 { 1332 {
1117 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1118 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1119 1335
1120 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1121 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1122 1338
1123 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1124 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1125 1341
1126 if (
1127#if PERL_VERSION_ATLEAST (5,9,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1128 expect_false (PL_parser)
1129#else
1130 expect_false (PL_lex_state != LEX_NOTPARSING) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1131#endif
1132 )
1133 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1345#endif
1134 } 1346 }
1135} 1347}
1136 1348
1137/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1138static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1139transfer (pTHX_ struct coro *prev, struct coro *next) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1140{ 1352{
1141 dSTACKLEVEL; 1353 dSTACKLEVEL;
1142 static volatile int has_throw;
1143 1354
1144 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1145 if (expect_false (!next)) 1356 if (expect_false (!prev))
1146 { 1357 {
1147 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1148 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1149 } 1360 }
1150 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1151 { 1362 {
1152 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1153 1364
1154 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1155 { 1366 {
1156 /* create a new empty context */ 1367 /* create a new empty/source context */
1157 Newz (0, prev->cctx, 1, coro_cctx);
1158 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1159 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1160 } 1370 }
1161 1371
1162 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1163 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1164
1165 LOCK;
1166 1374
1167 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1168 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1169 1377
1170 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1175 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1176 } 1384 }
1177 else 1385 else
1178 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1179 1387
1180 prev__cctx = prev->cctx;
1181
1182 /* possibly "free" the cctx */ 1388 /* possibly untie and reuse the cctx */
1183 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1389 if (expect_true (
1390 cctx_current->idle_sp == STACKLEVEL
1391 && !(cctx_current->flags & CC_TRACE)
1392 && !force_cctx
1393 ))
1184 { 1394 {
1185 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1186 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1187
1188 prev->cctx = 0;
1189 1397
1190 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1398 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1191 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1399 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1192 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1400 if (expect_false (CCTX_EXPIRED (cctx_current)))
1193 if (!next->cctx) 1401 if (!next->cctx)
1194 next->cctx = cctx_get (aTHX); 1402 next->cctx = cctx_get (aTHX);
1195 1403
1196 cctx_put (prev__cctx); 1404 cctx_put (cctx_current);
1405 assert (!prev->cctx);//D temporary
1197 } 1406 }
1407 else
1408 prev->cctx = cctx_current;
1198 1409
1199 ++next->usecount; 1410 ++next->usecount;
1200 1411
1201 if (expect_true (!next->cctx)) 1412 cctx_prev = cctx_current;
1202 next->cctx = cctx_get (aTHX); 1413 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1203 1414
1204 has_throw = !!next->throw; 1415 next->cctx = 0;
1205 1416
1206 if (expect_false (prev__cctx != next->cctx)) 1417 if (expect_false (cctx_prev != cctx_current))
1207 { 1418 {
1208 prev__cctx->top_env = PL_top_env; 1419 cctx_prev->top_env = PL_top_env;
1209 PL_top_env = next->cctx->top_env; 1420 PL_top_env = cctx_current->top_env;
1210 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1421 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1211 } 1422 }
1212 1423
1213 free_coro_mortal (aTHX); 1424 transfer_tail (aTHX);
1214 UNLOCK;
1215
1216 if (expect_false (has_throw))
1217 {
1218 struct coro *coro = SvSTATE (coro_current);
1219
1220 if (coro->throw)
1221 {
1222 SV *exception = coro->throw;
1223 coro->throw = 0;
1224 sv_setsv (ERRSV, exception);
1225 croak (0);
1226 }
1227 }
1228 } 1425 }
1229} 1426}
1230 1427
1231struct transfer_args
1232{
1233 struct coro *prev, *next;
1234};
1235
1236#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1428#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1237#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1429#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1238 1430
1239/** high level stuff ********************************************************/ 1431/** high level stuff ********************************************************/
1240 1432
1241static int 1433static int
1242coro_state_destroy (pTHX_ struct coro *coro) 1434coro_state_destroy (pTHX_ struct coro *coro)
1243{ 1435{
1244 if (coro->flags & CF_DESTROYED) 1436 if (coro->flags & CF_DESTROYED)
1245 return 0; 1437 return 0;
1438
1439 if (coro->on_destroy)
1440 coro->on_destroy (aTHX_ coro);
1246 1441
1247 coro->flags |= CF_DESTROYED; 1442 coro->flags |= CF_DESTROYED;
1248 1443
1249 if (coro->flags & CF_READY) 1444 if (coro->flags & CF_READY)
1250 { 1445 {
1251 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1446 /* reduce nready, as destroying a ready coro effectively unreadies it */
1252 /* alternative: look through all ready queues and remove the coro */ 1447 /* alternative: look through all ready queues and remove the coro */
1253 LOCK;
1254 --coro_nready; 1448 --coro_nready;
1255 UNLOCK;
1256 } 1449 }
1257 else 1450 else
1258 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1451 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1259 1452
1260 if (coro->mainstack && coro->mainstack != main_mainstack) 1453 if (coro->mainstack && coro->mainstack != main_mainstack)
1261 { 1454 {
1262 struct coro temp; 1455 struct coro temp;
1263 1456
1264 if (coro->flags & CF_RUNNING) 1457 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1265 croak ("FATAL: tried to destroy currently running coroutine");
1266 1458
1267 save_perl (aTHX_ &temp); 1459 save_perl (aTHX_ &temp);
1268 load_perl (aTHX_ coro); 1460 load_perl (aTHX_ coro);
1269 1461
1270 coro_destroy (aTHX_ coro); 1462 coro_destruct (aTHX_ coro);
1271 1463
1272 load_perl (aTHX_ &temp); 1464 load_perl (aTHX_ &temp);
1273 1465
1274 coro->slot = 0; 1466 coro->slot = 0;
1275 } 1467 }
1276 1468
1277 cctx_destroy (coro->cctx); 1469 cctx_destroy (coro->cctx);
1470 SvREFCNT_dec (coro->startcv);
1278 SvREFCNT_dec (coro->args); 1471 SvREFCNT_dec (coro->args);
1472 SvREFCNT_dec (CORO_THROW);
1279 1473
1280 if (coro->next) coro->next->prev = coro->prev; 1474 if (coro->next) coro->next->prev = coro->prev;
1281 if (coro->prev) coro->prev->next = coro->next; 1475 if (coro->prev) coro->prev->next = coro->next;
1282 if (coro == coro_first) coro_first = coro->next; 1476 if (coro == coro_first) coro_first = coro->next;
1283 1477
… …
1321# define MGf_DUP 0 1515# define MGf_DUP 0
1322#endif 1516#endif
1323}; 1517};
1324 1518
1325static void 1519static void
1326prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1520prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1327{ 1521{
1328 ta->prev = SvSTATE (prev_sv); 1522 ta->prev = SvSTATE (prev_sv);
1329 ta->next = SvSTATE (next_sv); 1523 ta->next = SvSTATE (next_sv);
1330 TRANSFER_CHECK (*ta); 1524 TRANSFER_CHECK (*ta);
1331} 1525}
1332 1526
1333static void 1527static void
1334api_transfer (SV *prev_sv, SV *next_sv) 1528api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1335{ 1529{
1336 dTHX;
1337 struct transfer_args ta; 1530 struct coro_transfer_args ta;
1338 1531
1339 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1532 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1340 TRANSFER (ta); 1533 TRANSFER (ta, 1);
1534}
1535
1536/*****************************************************************************/
1537/* gensub: simple closure generation utility */
1538
1539#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1540
1541/* create a closure from XS, returns a code reference */
1542/* the arg can be accessed via GENSUB_ARG from the callback */
1543/* the callback must use dXSARGS/XSRETURN */
1544static SV *
1545gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1546{
1547 CV *cv = (CV *)newSV (0);
1548
1549 sv_upgrade ((SV *)cv, SVt_PVCV);
1550
1551 CvANON_on (cv);
1552 CvISXSUB_on (cv);
1553 CvXSUB (cv) = xsub;
1554 GENSUB_ARG = arg;
1555
1556 return newRV_noinc ((SV *)cv);
1341} 1557}
1342 1558
1343/** Coro ********************************************************************/ 1559/** Coro ********************************************************************/
1344 1560
1345static void 1561INLINE void
1346coro_enq (pTHX_ SV *coro_sv) 1562coro_enq (pTHX_ struct coro *coro)
1347{ 1563{
1348 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1564 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1349} 1565}
1350 1566
1351static SV * 1567INLINE SV *
1352coro_deq (pTHX) 1568coro_deq (pTHX)
1353{ 1569{
1354 int prio; 1570 int prio;
1355 1571
1356 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1572 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1359 1575
1360 return 0; 1576 return 0;
1361} 1577}
1362 1578
1363static int 1579static int
1364api_ready (SV *coro_sv) 1580api_ready (pTHX_ SV *coro_sv)
1365{ 1581{
1366 dTHX;
1367 struct coro *coro; 1582 struct coro *coro;
1583 SV *sv_hook;
1584 void (*xs_hook)(void);
1368 1585
1369 if (SvROK (coro_sv)) 1586 if (SvROK (coro_sv))
1370 coro_sv = SvRV (coro_sv); 1587 coro_sv = SvRV (coro_sv);
1371 1588
1372 coro = SvSTATE (coro_sv); 1589 coro = SvSTATE (coro_sv);
… …
1374 if (coro->flags & CF_READY) 1591 if (coro->flags & CF_READY)
1375 return 0; 1592 return 0;
1376 1593
1377 coro->flags |= CF_READY; 1594 coro->flags |= CF_READY;
1378 1595
1379 LOCK; 1596 sv_hook = coro_nready ? 0 : coro_readyhook;
1380 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1597 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1598
1599 coro_enq (aTHX_ coro);
1381 ++coro_nready; 1600 ++coro_nready;
1382 UNLOCK; 1601
1602 if (sv_hook)
1603 {
1604 dSP;
1605
1606 ENTER;
1607 SAVETMPS;
1608
1609 PUSHMARK (SP);
1610 PUTBACK;
1611 call_sv (sv_hook, G_VOID | G_DISCARD);
1612
1613 FREETMPS;
1614 LEAVE;
1615 }
1616
1617 if (xs_hook)
1618 xs_hook ();
1383 1619
1384 return 1; 1620 return 1;
1385} 1621}
1386 1622
1387static int 1623static int
1388api_is_ready (SV *coro_sv) 1624api_is_ready (pTHX_ SV *coro_sv)
1389{ 1625{
1390 dTHX;
1391 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1626 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1392} 1627}
1393 1628
1629/* expects to own a reference to next->hv */
1630INLINE void
1631prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1632{
1633 SV *prev_sv = SvRV (coro_current);
1634
1635 ta->prev = SvSTATE_hv (prev_sv);
1636 ta->next = next;
1637
1638 TRANSFER_CHECK (*ta);
1639
1640 SvRV_set (coro_current, (SV *)next->hv);
1641
1642 free_coro_mortal (aTHX);
1643 coro_mortal = prev_sv;
1644}
1645
1394static void 1646static void
1395prepare_schedule (pTHX_ struct transfer_args *ta) 1647prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1396{ 1648{
1397 SV *prev_sv, *next_sv;
1398
1399 for (;;) 1649 for (;;)
1400 { 1650 {
1401 LOCK;
1402 next_sv = coro_deq (aTHX); 1651 SV *next_sv = coro_deq (aTHX);
1403 1652
1404 /* nothing to schedule: call the idle handler */
1405 if (expect_false (!next_sv)) 1653 if (expect_true (next_sv))
1406 { 1654 {
1655 struct coro *next = SvSTATE_hv (next_sv);
1656
1657 /* cannot transfer to destroyed coros, skip and look for next */
1658 if (expect_false (next->flags & CF_DESTROYED))
1659 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1660 else
1661 {
1662 next->flags &= ~CF_READY;
1663 --coro_nready;
1664
1665 prepare_schedule_to (aTHX_ ta, next);
1666 break;
1667 }
1668 }
1669 else
1670 {
1671 /* nothing to schedule: call the idle handler */
1407 dSP; 1672 dSP;
1408 UNLOCK;
1409 1673
1410 ENTER; 1674 ENTER;
1411 SAVETMPS; 1675 SAVETMPS;
1412 1676
1413 PUSHMARK (SP); 1677 PUSHMARK (SP);
1414 PUTBACK; 1678 PUTBACK;
1415 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1679 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1416 SPAGAIN;
1417 1680
1418 FREETMPS; 1681 FREETMPS;
1419 LEAVE; 1682 LEAVE;
1420 continue;
1421 } 1683 }
1422
1423 ta->next = SvSTATE (next_sv);
1424
1425 /* cannot transfer to destroyed coros, skip and look for next */
1426 if (expect_false (ta->next->flags & CF_DESTROYED))
1427 {
1428 UNLOCK;
1429 SvREFCNT_dec (next_sv);
1430 /* coro_nready is already taken care of by destroy */
1431 continue;
1432 }
1433
1434 --coro_nready;
1435 UNLOCK;
1436 break;
1437 } 1684 }
1438
1439 /* free this only after the transfer */
1440 prev_sv = SvRV (coro_current);
1441 ta->prev = SvSTATE (prev_sv);
1442 TRANSFER_CHECK (*ta);
1443 assert (ta->next->flags & CF_READY);
1444 ta->next->flags &= ~CF_READY;
1445 SvRV_set (coro_current, next_sv);
1446
1447 LOCK;
1448 free_coro_mortal (aTHX);
1449 coro_mortal = prev_sv;
1450 UNLOCK;
1451} 1685}
1452 1686
1453static void 1687INLINE void
1454prepare_cede (pTHX_ struct transfer_args *ta) 1688prepare_cede (pTHX_ struct coro_transfer_args *ta)
1455{ 1689{
1456 api_ready (coro_current); 1690 api_ready (aTHX_ coro_current);
1457 prepare_schedule (aTHX_ ta); 1691 prepare_schedule (aTHX_ ta);
1458} 1692}
1459 1693
1694INLINE void
1695prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1696{
1697 SV *prev = SvRV (coro_current);
1698
1699 if (coro_nready)
1700 {
1701 prepare_schedule (aTHX_ ta);
1702 api_ready (aTHX_ prev);
1703 }
1704 else
1705 prepare_nop (aTHX_ ta);
1706}
1707
1708static void
1709api_schedule (pTHX)
1710{
1711 struct coro_transfer_args ta;
1712
1713 prepare_schedule (aTHX_ &ta);
1714 TRANSFER (ta, 1);
1715}
1716
1717static void
1718api_schedule_to (pTHX_ SV *coro_sv)
1719{
1720 struct coro_transfer_args ta;
1721 struct coro *next = SvSTATE (coro_sv);
1722
1723 SvREFCNT_inc_NN (coro_sv);
1724 prepare_schedule_to (aTHX_ &ta, next);
1725}
1726
1460static int 1727static int
1461prepare_cede_notself (pTHX_ struct transfer_args *ta) 1728api_cede (pTHX)
1462{ 1729{
1463 if (coro_nready) 1730 struct coro_transfer_args ta;
1464 { 1731
1465 SV *prev = SvRV (coro_current);
1466 prepare_schedule (aTHX_ ta); 1732 prepare_cede (aTHX_ &ta);
1467 api_ready (prev); 1733
1734 if (expect_true (ta.prev != ta.next))
1735 {
1736 TRANSFER (ta, 1);
1468 return 1; 1737 return 1;
1469 } 1738 }
1470 else 1739 else
1471 return 0; 1740 return 0;
1472} 1741}
1473 1742
1474static void
1475api_schedule (void)
1476{
1477 dTHX;
1478 struct transfer_args ta;
1479
1480 prepare_schedule (aTHX_ &ta);
1481 TRANSFER (ta);
1482}
1483
1484static int 1743static int
1485api_cede (void) 1744api_cede_notself (pTHX)
1486{ 1745{
1487 dTHX; 1746 if (coro_nready)
1747 {
1488 struct transfer_args ta; 1748 struct coro_transfer_args ta;
1489 1749
1490 prepare_cede (aTHX_ &ta); 1750 prepare_cede_notself (aTHX_ &ta);
1491
1492 if (expect_true (ta.prev != ta.next))
1493 {
1494 TRANSFER (ta); 1751 TRANSFER (ta, 1);
1495 return 1; 1752 return 1;
1496 } 1753 }
1497 else 1754 else
1498 return 0; 1755 return 0;
1499} 1756}
1500 1757
1501static int 1758static void
1502api_cede_notself (void)
1503{
1504 dTHX;
1505 struct transfer_args ta;
1506
1507 if (prepare_cede_notself (aTHX_ &ta))
1508 {
1509 TRANSFER (ta);
1510 return 1;
1511 }
1512 else
1513 return 0;
1514}
1515
1516static void
1517api_trace (SV *coro_sv, int flags) 1759api_trace (pTHX_ SV *coro_sv, int flags)
1518{ 1760{
1519 dTHX;
1520 struct coro *coro = SvSTATE (coro_sv); 1761 struct coro *coro = SvSTATE (coro_sv);
1521 1762
1522 if (flags & CC_TRACE) 1763 if (flags & CC_TRACE)
1523 { 1764 {
1524 if (!coro->cctx) 1765 if (!coro->cctx)
1525 coro->cctx = cctx_new (); 1766 coro->cctx = cctx_new_run ();
1526 else if (!(coro->cctx->flags & CC_TRACE)) 1767 else if (!(coro->cctx->flags & CC_TRACE))
1527 croak ("cannot enable tracing on coroutine with custom stack"); 1768 croak ("cannot enable tracing on coroutine with custom stack,");
1528 1769
1529 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1770 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1530 } 1771 }
1531 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1772 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1532 { 1773 {
… …
1537 else 1778 else
1538 coro->slot->runops = RUNOPS_DEFAULT; 1779 coro->slot->runops = RUNOPS_DEFAULT;
1539 } 1780 }
1540} 1781}
1541 1782
1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro)
1785{
1786 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1787 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1788
1789 if (on_destroyp)
1790 {
1791 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1792
1793 while (AvFILLp (on_destroy) >= 0)
1794 {
1795 dSP; /* don't disturb outer sp */
1796 SV *cb = av_pop (on_destroy);
1797
1798 PUSHMARK (SP);
1799
1800 if (statusp)
1801 {
1802 int i;
1803 AV *status = (AV *)SvRV (*statusp);
1804 EXTEND (SP, AvFILLp (status) + 1);
1805
1806 for (i = 0; i <= AvFILLp (status); ++i)
1807 PUSHs (AvARRAY (status)[i]);
1808 }
1809
1810 PUTBACK;
1811 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1812 }
1813 }
1814}
1815
1816static void
1817slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1818{
1819 int i;
1820 HV *hv = (HV *)SvRV (coro_current);
1821 AV *av = newAV ();
1822
1823 av_extend (av, items - 1);
1824 for (i = 0; i < items; ++i)
1825 av_push (av, SvREFCNT_inc_NN (arg [i]));
1826
1827 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1828
1829 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1830 api_ready (aTHX_ sv_manager);
1831
1832 frame->prepare = prepare_schedule;
1833 frame->check = slf_check_repeat;
1834}
1835
1836/*****************************************************************************/
1837/* async pool handler */
1838
1839static int
1840slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1841{
1842 HV *hv = (HV *)SvRV (coro_current);
1843 struct coro *coro = (struct coro *)frame->data;
1844
1845 if (!coro->invoke_cb)
1846 return 1; /* loop till we have invoke */
1847 else
1848 {
1849 hv_store (hv, "desc", sizeof ("desc") - 1,
1850 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1851
1852 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1853
1854 {
1855 dSP;
1856 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1857 PUTBACK;
1858 }
1859
1860 SvREFCNT_dec (GvAV (PL_defgv));
1861 GvAV (PL_defgv) = coro->invoke_av;
1862 coro->invoke_av = 0;
1863
1864 return 0;
1865 }
1866}
1867
1868static void
1869slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1870{
1871 HV *hv = (HV *)SvRV (coro_current);
1872 struct coro *coro = SvSTATE_hv ((SV *)hv);
1873
1874 if (expect_true (coro->saved_deffh))
1875 {
1876 /* subsequent iteration */
1877 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1878 coro->saved_deffh = 0;
1879
1880 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1881 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1882 {
1883 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1884 coro->invoke_av = newAV ();
1885
1886 frame->prepare = prepare_nop;
1887 }
1888 else
1889 {
1890 av_clear (GvAV (PL_defgv));
1891 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1892
1893 coro->prio = 0;
1894
1895 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1896 api_trace (aTHX_ coro_current, 0);
1897
1898 frame->prepare = prepare_schedule;
1899 av_push (av_async_pool, SvREFCNT_inc (hv));
1900 }
1901 }
1902 else
1903 {
1904 /* first iteration, simply fall through */
1905 frame->prepare = prepare_nop;
1906 }
1907
1908 frame->check = slf_check_pool_handler;
1909 frame->data = (void *)coro;
1910}
1911
1912/*****************************************************************************/
1913/* rouse callback */
1914
1915#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1916
1917static void
1918coro_rouse_callback (pTHX_ CV *cv)
1919{
1920 dXSARGS;
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1924 {
1925 /* first call, set args */
1926 AV *av = newAV ();
1927 SV *coro = SvRV (data);
1928
1929 SvRV_set (data, (SV *)av);
1930 api_ready (aTHX_ coro);
1931 SvREFCNT_dec (coro);
1932
1933 /* better take a full copy of the arguments */
1934 while (items--)
1935 av_store (av, items, newSVsv (ST (items)));
1936 }
1937
1938 XSRETURN_EMPTY;
1939}
1940
1941static int
1942slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1943{
1944 SV *data = (SV *)frame->data;
1945
1946 if (CORO_THROW)
1947 return 0;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 return 1;
1951
1952 /* now push all results on the stack */
1953 {
1954 dSP;
1955 AV *av = (AV *)SvRV (data);
1956 int i;
1957
1958 EXTEND (SP, AvFILLp (av) + 1);
1959 for (i = 0; i <= AvFILLp (av); ++i)
1960 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1961
1962 /* we have stolen the elements, so ste length to zero and free */
1963 AvFILLp (av) = -1;
1964 av_undef (av);
1965
1966 PUTBACK;
1967 }
1968
1969 return 0;
1970}
1971
1972static void
1973slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1974{
1975 SV *cb;
1976
1977 if (items)
1978 cb = arg [0];
1979 else
1980 {
1981 struct coro *coro = SvSTATE_current;
1982
1983 if (!coro->rouse_cb)
1984 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1985
1986 cb = sv_2mortal (coro->rouse_cb);
1987 coro->rouse_cb = 0;
1988 }
1989
1990 if (!SvROK (cb)
1991 || SvTYPE (SvRV (cb)) != SVt_PVCV
1992 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1993 croak ("Coro::rouse_wait called with illegal callback argument,");
1994
1995 {
1996 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1997 SV *data = (SV *)GENSUB_ARG;
1998
1999 frame->data = (void *)data;
2000 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2001 frame->check = slf_check_rouse_wait;
2002 }
2003}
2004
2005static SV *
2006coro_new_rouse_cb (pTHX)
2007{
2008 HV *hv = (HV *)SvRV (coro_current);
2009 struct coro *coro = SvSTATE_hv (hv);
2010 SV *data = newRV_inc ((SV *)hv);
2011 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2012
2013 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2014 SvREFCNT_dec (data); /* magicext increases the refcount */
2015
2016 SvREFCNT_dec (coro->rouse_cb);
2017 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2018
2019 return cb;
2020}
2021
2022/*****************************************************************************/
2023/* schedule-like-function opcode (SLF) */
2024
2025static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2026static const CV *slf_cv;
2027static SV **slf_argv;
2028static int slf_argc, slf_arga; /* count, allocated */
2029static I32 slf_ax; /* top of stack, for restore */
2030
2031/* this restores the stack in the case we patched the entersub, to */
2032/* recreate the stack frame as perl will on following calls */
2033/* since entersub cleared the stack */
2034static OP *
2035pp_restore (pTHX)
2036{
2037 int i;
2038 SV **SP = PL_stack_base + slf_ax;
2039
2040 PUSHMARK (SP);
2041
2042 EXTEND (SP, slf_argc + 1);
2043
2044 for (i = 0; i < slf_argc; ++i)
2045 PUSHs (sv_2mortal (slf_argv [i]));
2046
2047 PUSHs ((SV *)CvGV (slf_cv));
2048
2049 RETURNOP (slf_restore.op_first);
2050}
2051
2052static void
2053slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2054{
2055 SV **arg = (SV **)slf_frame.data;
2056
2057 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2058}
2059
2060static void
2061slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2062{
2063 if (items != 2)
2064 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2065
2066 frame->prepare = slf_prepare_transfer;
2067 frame->check = slf_check_nop;
2068 frame->data = (void *)arg; /* let's hope it will stay valid */
2069}
2070
2071static void
2072slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 frame->prepare = prepare_schedule;
2075 frame->check = slf_check_nop;
2076}
2077
2078static void
2079slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2080{
2081 struct coro *next = (struct coro *)slf_frame.data;
2082
2083 SvREFCNT_inc_NN (next->hv);
2084 prepare_schedule_to (aTHX_ ta, next);
2085}
2086
2087static void
2088slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2089{
2090 if (!items)
2091 croak ("Coro::schedule_to expects a coroutine argument, caught");
2092
2093 frame->data = (void *)SvSTATE (arg [0]);
2094 frame->prepare = slf_prepare_schedule_to;
2095 frame->check = slf_check_nop;
2096}
2097
2098static void
2099slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2100{
2101 api_ready (aTHX_ SvRV (coro_current));
2102
2103 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2104}
2105
2106static void
2107slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_cede;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 frame->prepare = prepare_cede_notself;
2117 frame->check = slf_check_nop;
2118}
2119
2120/*
2121 * these not obviously related functions are all rolled into one
2122 * function to increase chances that they all will call transfer with the same
2123 * stack offset
2124 * SLF stands for "schedule-like-function".
2125 */
2126static OP *
2127pp_slf (pTHX)
2128{
2129 I32 checkmark; /* mark SP to see how many elements check has pushed */
2130
2131 /* set up the slf frame, unless it has already been set-up */
2132 /* the latter happens when a new coro has been started */
2133 /* or when a new cctx was attached to an existing coroutine */
2134 if (expect_true (!slf_frame.prepare))
2135 {
2136 /* first iteration */
2137 dSP;
2138 SV **arg = PL_stack_base + TOPMARK + 1;
2139 int items = SP - arg; /* args without function object */
2140 SV *gv = *sp;
2141
2142 /* do a quick consistency check on the "function" object, and if it isn't */
2143 /* for us, divert to the real entersub */
2144 if (SvTYPE (gv) != SVt_PVGV
2145 || !GvCV (gv)
2146 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2147 return PL_ppaddr[OP_ENTERSUB](aTHX);
2148
2149 if (!(PL_op->op_flags & OPf_STACKED))
2150 {
2151 /* ampersand-form of call, use @_ instead of stack */
2152 AV *av = GvAV (PL_defgv);
2153 arg = AvARRAY (av);
2154 items = AvFILLp (av) + 1;
2155 }
2156
2157 /* now call the init function, which needs to set up slf_frame */
2158 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2159 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2160
2161 /* pop args */
2162 SP = PL_stack_base + POPMARK;
2163
2164 PUTBACK;
2165 }
2166
2167 /* now that we have a slf_frame, interpret it! */
2168 /* we use a callback system not to make the code needlessly */
2169 /* complicated, but so we can run multiple perl coros from one cctx */
2170
2171 do
2172 {
2173 struct coro_transfer_args ta;
2174
2175 slf_frame.prepare (aTHX_ &ta);
2176 TRANSFER (ta, 0);
2177
2178 checkmark = PL_stack_sp - PL_stack_base;
2179 }
2180 while (slf_frame.check (aTHX_ &slf_frame));
2181
2182 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2183
2184 /* exception handling */
2185 if (expect_false (CORO_THROW))
2186 {
2187 SV *exception = sv_2mortal (CORO_THROW);
2188
2189 CORO_THROW = 0;
2190 sv_setsv (ERRSV, exception);
2191 croak (0);
2192 }
2193
2194 /* return value handling - mostly like entersub */
2195 /* make sure we put something on the stack in scalar context */
2196 if (GIMME_V == G_SCALAR)
2197 {
2198 dSP;
2199 SV **bot = PL_stack_base + checkmark;
2200
2201 if (sp == bot) /* too few, push undef */
2202 bot [1] = &PL_sv_undef;
2203 else if (sp != bot + 1) /* too many, take last one */
2204 bot [1] = *sp;
2205
2206 SP = bot + 1;
2207
2208 PUTBACK;
2209 }
2210
2211 return NORMAL;
2212}
2213
2214static void
2215api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2216{
2217 int i;
2218 SV **arg = PL_stack_base + ax;
2219 int items = PL_stack_sp - arg + 1;
2220
2221 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2222
2223 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2224 && PL_op->op_ppaddr != pp_slf)
2225 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2226
2227 CvFLAGS (cv) |= CVf_SLF;
2228 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2229 slf_cv = cv;
2230
2231 /* we patch the op, and then re-run the whole call */
2232 /* we have to put the same argument on the stack for this to work */
2233 /* and this will be done by pp_restore */
2234 slf_restore.op_next = (OP *)&slf_restore;
2235 slf_restore.op_type = OP_CUSTOM;
2236 slf_restore.op_ppaddr = pp_restore;
2237 slf_restore.op_first = PL_op;
2238
2239 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2240
2241 if (PL_op->op_flags & OPf_STACKED)
2242 {
2243 if (items > slf_arga)
2244 {
2245 slf_arga = items;
2246 free (slf_argv);
2247 slf_argv = malloc (slf_arga * sizeof (SV *));
2248 }
2249
2250 slf_argc = items;
2251
2252 for (i = 0; i < items; ++i)
2253 slf_argv [i] = SvREFCNT_inc (arg [i]);
2254 }
2255 else
2256 slf_argc = 0;
2257
2258 PL_op->op_ppaddr = pp_slf;
2259 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2260
2261 PL_op = (OP *)&slf_restore;
2262}
2263
2264/*****************************************************************************/
2265/* PerlIO::cede */
2266
2267typedef struct
2268{
2269 PerlIOBuf base;
2270 NV next, every;
2271} PerlIOCede;
2272
2273static IV
2274PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2275{
2276 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2277
2278 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2279 self->next = nvtime () + self->every;
2280
2281 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2282}
2283
2284static SV *
2285PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2286{
2287 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2288
2289 return newSVnv (self->every);
2290}
2291
2292static IV
2293PerlIOCede_flush (pTHX_ PerlIO *f)
2294{
2295 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2296 double now = nvtime ();
2297
2298 if (now >= self->next)
2299 {
2300 api_cede (aTHX);
2301 self->next = now + self->every;
2302 }
2303
2304 return PerlIOBuf_flush (aTHX_ f);
2305}
2306
2307static PerlIO_funcs PerlIO_cede =
2308{
2309 sizeof(PerlIO_funcs),
2310 "cede",
2311 sizeof(PerlIOCede),
2312 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2313 PerlIOCede_pushed,
2314 PerlIOBuf_popped,
2315 PerlIOBuf_open,
2316 PerlIOBase_binmode,
2317 PerlIOCede_getarg,
2318 PerlIOBase_fileno,
2319 PerlIOBuf_dup,
2320 PerlIOBuf_read,
2321 PerlIOBuf_unread,
2322 PerlIOBuf_write,
2323 PerlIOBuf_seek,
2324 PerlIOBuf_tell,
2325 PerlIOBuf_close,
2326 PerlIOCede_flush,
2327 PerlIOBuf_fill,
2328 PerlIOBase_eof,
2329 PerlIOBase_error,
2330 PerlIOBase_clearerr,
2331 PerlIOBase_setlinebuf,
2332 PerlIOBuf_get_base,
2333 PerlIOBuf_bufsiz,
2334 PerlIOBuf_get_ptr,
2335 PerlIOBuf_get_cnt,
2336 PerlIOBuf_set_ptrcnt,
2337};
2338
2339/*****************************************************************************/
2340/* Coro::Semaphore & Coro::Signal */
2341
2342static SV *
2343coro_waitarray_new (pTHX_ int count)
2344{
2345 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2346 AV *av = newAV ();
2347 SV **ary;
2348
2349 /* unfortunately, building manually saves memory */
2350 Newx (ary, 2, SV *);
2351 AvALLOC (av) = ary;
2352 /*AvARRAY (av) = ary;*/
2353 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2354 AvMAX (av) = 1;
2355 AvFILLp (av) = 0;
2356 ary [0] = newSViv (count);
2357
2358 return newRV_noinc ((SV *)av);
2359}
2360
2361/* semaphore */
2362
2363static void
2364coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2365{
2366 SV *count_sv = AvARRAY (av)[0];
2367 IV count = SvIVX (count_sv);
2368
2369 count += adjust;
2370 SvIVX (count_sv) = count;
2371
2372 /* now wake up as many waiters as are expected to lock */
2373 while (count > 0 && AvFILLp (av) > 0)
2374 {
2375 SV *cb;
2376
2377 /* swap first two elements so we can shift a waiter */
2378 AvARRAY (av)[0] = AvARRAY (av)[1];
2379 AvARRAY (av)[1] = count_sv;
2380 cb = av_shift (av);
2381
2382 if (SvOBJECT (cb))
2383 {
2384 api_ready (aTHX_ cb);
2385 --count;
2386 }
2387 else if (SvTYPE (cb) == SVt_PVCV)
2388 {
2389 dSP;
2390 PUSHMARK (SP);
2391 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2392 PUTBACK;
2393 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2394 }
2395
2396 SvREFCNT_dec (cb);
2397 }
2398}
2399
2400static void
2401coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2402{
2403 /* call $sem->adjust (0) to possibly wake up some other waiters */
2404 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2405}
2406
2407static int
2408slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2409{
2410 AV *av = (AV *)frame->data;
2411 SV *count_sv = AvARRAY (av)[0];
2412
2413 /* if we are about to throw, don't actually acquire the lock, just throw */
2414 if (CORO_THROW)
2415 return 0;
2416 else if (SvIVX (count_sv) > 0)
2417 {
2418 SvSTATE_current->on_destroy = 0;
2419
2420 if (acquire)
2421 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2422 else
2423 coro_semaphore_adjust (aTHX_ av, 0);
2424
2425 return 0;
2426 }
2427 else
2428 {
2429 int i;
2430 /* if we were woken up but can't down, we look through the whole */
2431 /* waiters list and only add us if we aren't in there already */
2432 /* this avoids some degenerate memory usage cases */
2433
2434 for (i = 1; i <= AvFILLp (av); ++i)
2435 if (AvARRAY (av)[i] == SvRV (coro_current))
2436 return 1;
2437
2438 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2439 return 1;
2440 }
2441}
2442
2443static int
2444slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2445{
2446 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2447}
2448
2449static int
2450slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2451{
2452 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2453}
2454
2455static void
2456slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2457{
2458 AV *av = (AV *)SvRV (arg [0]);
2459
2460 if (SvIVX (AvARRAY (av)[0]) > 0)
2461 {
2462 frame->data = (void *)av;
2463 frame->prepare = prepare_nop;
2464 }
2465 else
2466 {
2467 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2468
2469 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2470 frame->prepare = prepare_schedule;
2471
2472 /* to avoid race conditions when a woken-up coro gets terminated */
2473 /* we arrange for a temporary on_destroy that calls adjust (0) */
2474 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2475 }
2476}
2477
2478static void
2479slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2482 frame->check = slf_check_semaphore_down;
2483}
2484
2485static void
2486slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2487{
2488 if (items >= 2)
2489 {
2490 /* callback form */
2491 AV *av = (AV *)SvRV (arg [0]);
2492 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2493
2494 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2495
2496 if (SvIVX (AvARRAY (av)[0]) > 0)
2497 coro_semaphore_adjust (aTHX_ av, 0);
2498
2499 frame->prepare = prepare_nop;
2500 frame->check = slf_check_nop;
2501 }
2502 else
2503 {
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_wait;
2506 }
2507}
2508
2509/* signal */
2510
2511static void
2512coro_signal_wake (pTHX_ AV *av, int count)
2513{
2514 SvIVX (AvARRAY (av)[0]) = 0;
2515
2516 /* now signal count waiters */
2517 while (count > 0 && AvFILLp (av) > 0)
2518 {
2519 SV *cb;
2520
2521 /* swap first two elements so we can shift a waiter */
2522 cb = AvARRAY (av)[0];
2523 AvARRAY (av)[0] = AvARRAY (av)[1];
2524 AvARRAY (av)[1] = cb;
2525
2526 cb = av_shift (av);
2527
2528 api_ready (aTHX_ cb);
2529 sv_setiv (cb, 0); /* signal waiter */
2530 SvREFCNT_dec (cb);
2531
2532 --count;
2533 }
2534}
2535
2536static int
2537slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2538{
2539 /* if we are about to throw, also stop waiting */
2540 return SvROK ((SV *)frame->data) && !CORO_THROW;
2541}
2542
2543static void
2544slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 AV *av = (AV *)SvRV (arg [0]);
2547
2548 if (SvIVX (AvARRAY (av)[0]))
2549 {
2550 SvIVX (AvARRAY (av)[0]) = 0;
2551 frame->prepare = prepare_nop;
2552 frame->check = slf_check_nop;
2553 }
2554 else
2555 {
2556 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2557
2558 av_push (av, waiter);
2559
2560 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2561 frame->prepare = prepare_schedule;
2562 frame->check = slf_check_signal_wait;
2563 }
2564}
2565
2566/*****************************************************************************/
2567/* Coro::AIO */
2568
2569#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2570
2571/* helper storage struct */
2572struct io_state
2573{
2574 int errorno;
2575 I32 laststype; /* U16 in 5.10.0 */
2576 int laststatval;
2577 Stat_t statcache;
2578};
2579
2580static void
2581coro_aio_callback (pTHX_ CV *cv)
2582{
2583 dXSARGS;
2584 AV *state = (AV *)GENSUB_ARG;
2585 SV *coro = av_pop (state);
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587
2588 av_extend (state, items - 1);
2589
2590 sv_upgrade (data_sv, SVt_PV);
2591 SvCUR_set (data_sv, sizeof (struct io_state));
2592 SvPOK_only (data_sv);
2593
2594 {
2595 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2596
2597 data->errorno = errno;
2598 data->laststype = PL_laststype;
2599 data->laststatval = PL_laststatval;
2600 data->statcache = PL_statcache;
2601 }
2602
2603 /* now build the result vector out of all the parameters and the data_sv */
2604 {
2605 int i;
2606
2607 for (i = 0; i < items; ++i)
2608 av_push (state, SvREFCNT_inc_NN (ST (i)));
2609 }
2610
2611 av_push (state, data_sv);
2612
2613 api_ready (aTHX_ coro);
2614 SvREFCNT_dec (coro);
2615 SvREFCNT_dec ((AV *)state);
2616}
2617
2618static int
2619slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2620{
2621 AV *state = (AV *)frame->data;
2622
2623 /* if we are about to throw, return early */
2624 /* this does not cancel the aio request, but at least */
2625 /* it quickly returns */
2626 if (CORO_THROW)
2627 return 0;
2628
2629 /* one element that is an RV? repeat! */
2630 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2631 return 1;
2632
2633 /* restore status */
2634 {
2635 SV *data_sv = av_pop (state);
2636 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 SvREFCNT_dec (data_sv);
2644 }
2645
2646 /* push result values */
2647 {
2648 dSP;
2649 int i;
2650
2651 EXTEND (SP, AvFILLp (state) + 1);
2652 for (i = 0; i <= AvFILLp (state); ++i)
2653 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2654
2655 PUTBACK;
2656 }
2657
2658 return 0;
2659}
2660
2661static void
2662slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2663{
2664 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2665 SV *coro_hv = SvRV (coro_current);
2666 struct coro *coro = SvSTATE_hv (coro_hv);
2667
2668 /* put our coroutine id on the state arg */
2669 av_push (state, SvREFCNT_inc_NN (coro_hv));
2670
2671 /* first see whether we have a non-zero priority and set it as AIO prio */
2672 if (coro->prio)
2673 {
2674 dSP;
2675
2676 static SV *prio_cv;
2677 static SV *prio_sv;
2678
2679 if (expect_false (!prio_cv))
2680 {
2681 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2682 prio_sv = newSViv (0);
2683 }
2684
2685 PUSHMARK (SP);
2686 sv_setiv (prio_sv, coro->prio);
2687 XPUSHs (prio_sv);
2688
2689 PUTBACK;
2690 call_sv (prio_cv, G_VOID | G_DISCARD);
2691 }
2692
2693 /* now call the original request */
2694 {
2695 dSP;
2696 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2697 int i;
2698
2699 PUSHMARK (SP);
2700
2701 /* first push all args to the stack */
2702 EXTEND (SP, items + 1);
2703
2704 for (i = 0; i < items; ++i)
2705 PUSHs (arg [i]);
2706
2707 /* now push the callback closure */
2708 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2709
2710 /* now call the AIO function - we assume our request is uncancelable */
2711 PUTBACK;
2712 call_sv ((SV *)req, G_VOID | G_DISCARD);
2713 }
2714
2715 /* now that the requets is going, we loop toll we have a result */
2716 frame->data = (void *)state;
2717 frame->prepare = prepare_schedule;
2718 frame->check = slf_check_aio_req;
2719}
2720
2721static void
2722coro_aio_req_xs (pTHX_ CV *cv)
2723{
2724 dXSARGS;
2725
2726 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2727
2728 XSRETURN_EMPTY;
2729}
2730
2731/*****************************************************************************/
2732
2733#if CORO_CLONE
2734# include "clone.c"
2735#endif
2736
1542MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2737MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1543 2738
1544PROTOTYPES: DISABLE 2739PROTOTYPES: DISABLE
1545 2740
1546BOOT: 2741BOOT:
1547{ 2742{
1548#ifdef USE_ITHREADS 2743#ifdef USE_ITHREADS
1549 MUTEX_INIT (&coro_mutex); 2744# if CORO_PTHREAD
2745 coro_thx = PERL_GET_CONTEXT;
2746# endif
1550#endif 2747#endif
1551 BOOT_PAGESIZE; 2748 BOOT_PAGESIZE;
2749
2750 cctx_current = cctx_new_empty ();
1552 2751
1553 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2752 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1554 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2753 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1555 2754
1556 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2755 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1557 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2756 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1558 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2757 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1559 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1560 2758
1561 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2759 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1562 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2760 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1563 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2761 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1564 2762
… …
1573 main_top_env = PL_top_env; 2771 main_top_env = PL_top_env;
1574 2772
1575 while (main_top_env->je_prev) 2773 while (main_top_env->je_prev)
1576 main_top_env = main_top_env->je_prev; 2774 main_top_env = main_top_env->je_prev;
1577 2775
2776 {
2777 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2778
2779 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2780 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2781
2782 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2783 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2784 }
2785
1578 coroapi.ver = CORO_API_VERSION; 2786 coroapi.ver = CORO_API_VERSION;
1579 coroapi.rev = CORO_API_REVISION; 2787 coroapi.rev = CORO_API_REVISION;
2788
1580 coroapi.transfer = api_transfer; 2789 coroapi.transfer = api_transfer;
2790
2791 coroapi.sv_state = SvSTATE_;
2792 coroapi.execute_slf = api_execute_slf;
2793 coroapi.prepare_nop = prepare_nop;
2794 coroapi.prepare_schedule = prepare_schedule;
2795 coroapi.prepare_cede = prepare_cede;
2796 coroapi.prepare_cede_notself = prepare_cede_notself;
2797
2798 {
2799 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2800
2801 if (!svp) croak ("Time::HiRes is required");
2802 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2803
2804 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2805 }
1581 2806
1582 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2807 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1583} 2808}
1584 2809
1585SV * 2810SV *
1586new (char *klass, ...) 2811new (char *klass, ...)
2812 ALIAS:
2813 Coro::new = 1
1587 CODE: 2814 CODE:
1588{ 2815{
1589 struct coro *coro; 2816 struct coro *coro;
1590 MAGIC *mg; 2817 MAGIC *mg;
1591 HV *hv; 2818 HV *hv;
2819 CV *cb;
1592 int i; 2820 int i;
2821
2822 if (items > 1)
2823 {
2824 cb = coro_sv_2cv (aTHX_ ST (1));
2825
2826 if (!ix)
2827 {
2828 if (CvISXSUB (cb))
2829 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2830
2831 if (!CvROOT (cb))
2832 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2833 }
2834 }
1593 2835
1594 Newz (0, coro, 1, struct coro); 2836 Newz (0, coro, 1, struct coro);
1595 coro->args = newAV (); 2837 coro->args = newAV ();
1596 coro->flags = CF_NEW; 2838 coro->flags = CF_NEW;
1597 2839
… …
1602 coro->hv = hv = newHV (); 2844 coro->hv = hv = newHV ();
1603 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2845 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1604 mg->mg_flags |= MGf_DUP; 2846 mg->mg_flags |= MGf_DUP;
1605 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2847 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1606 2848
2849 if (items > 1)
2850 {
1607 av_extend (coro->args, items - 1); 2851 av_extend (coro->args, items - 1 + ix - 1);
2852
2853 if (ix)
2854 {
2855 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2856 cb = cv_coro_run;
2857 }
2858
2859 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2860
1608 for (i = 1; i < items; i++) 2861 for (i = 2; i < items; i++)
1609 av_push (coro->args, newSVsv (ST (i))); 2862 av_push (coro->args, newSVsv (ST (i)));
2863 }
1610} 2864}
1611 OUTPUT: 2865 OUTPUT:
1612 RETVAL 2866 RETVAL
1613 2867
1614# these not obviously related functions are all rolled into the same xs
1615# function to increase chances that they all will call transfer with the same
1616# stack offset
1617void 2868void
1618_set_stacklevel (...) 2869transfer (...)
1619 ALIAS: 2870 PROTOTYPE: $$
1620 Coro::State::transfer = 1 2871 CODE:
1621 Coro::schedule = 2 2872 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1622 Coro::cede = 3
1623 Coro::cede_notself = 4
1624 CODE:
1625{
1626 struct transfer_args ta;
1627
1628 PUTBACK;
1629 switch (ix)
1630 {
1631 case 0:
1632 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1633 ta.next = 0;
1634 break;
1635
1636 case 1:
1637 if (items != 2)
1638 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1639
1640 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1641 break;
1642
1643 case 2:
1644 prepare_schedule (aTHX_ &ta);
1645 break;
1646
1647 case 3:
1648 prepare_cede (aTHX_ &ta);
1649 break;
1650
1651 case 4:
1652 if (!prepare_cede_notself (aTHX_ &ta))
1653 XSRETURN_EMPTY;
1654
1655 break;
1656 }
1657 SPAGAIN;
1658
1659 BARRIER;
1660 PUTBACK;
1661 TRANSFER (ta);
1662 SPAGAIN; /* might be the sp of a different coroutine now */
1663 /* be extra careful not to ever do anything after TRANSFER */
1664}
1665 2873
1666bool 2874bool
1667_destroy (SV *coro_sv) 2875_destroy (SV *coro_sv)
1668 CODE: 2876 CODE:
1669 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2877 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1670 OUTPUT: 2878 OUTPUT:
1671 RETVAL 2879 RETVAL
1672 2880
1673void 2881void
1674_exit (code) 2882_exit (int code)
1675 int code
1676 PROTOTYPE: $ 2883 PROTOTYPE: $
1677 CODE: 2884 CODE:
1678 _exit (code); 2885 _exit (code);
1679 2886
2887SV *
2888clone (Coro::State coro)
2889 CODE:
2890{
2891#if CORO_CLONE
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899#else
2900 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2901#endif
2902}
2903 OUTPUT:
2904 RETVAL
2905
1680int 2906int
1681cctx_stacksize (int new_stacksize = 0) 2907cctx_stacksize (int new_stacksize = 0)
2908 PROTOTYPE: ;$
1682 CODE: 2909 CODE:
1683 RETVAL = coro_stacksize; 2910 RETVAL = cctx_stacksize;
1684 if (new_stacksize) 2911 if (new_stacksize)
2912 {
1685 coro_stacksize = new_stacksize; 2913 cctx_stacksize = new_stacksize;
2914 ++cctx_gen;
2915 }
1686 OUTPUT: 2916 OUTPUT:
1687 RETVAL 2917 RETVAL
1688 2918
1689int 2919int
2920cctx_max_idle (int max_idle = 0)
2921 PROTOTYPE: ;$
2922 CODE:
2923 RETVAL = cctx_max_idle;
2924 if (max_idle > 1)
2925 cctx_max_idle = max_idle;
2926 OUTPUT:
2927 RETVAL
2928
2929int
1690cctx_count () 2930cctx_count ()
2931 PROTOTYPE:
1691 CODE: 2932 CODE:
1692 RETVAL = cctx_count; 2933 RETVAL = cctx_count;
1693 OUTPUT: 2934 OUTPUT:
1694 RETVAL 2935 RETVAL
1695 2936
1696int 2937int
1697cctx_idle () 2938cctx_idle ()
2939 PROTOTYPE:
1698 CODE: 2940 CODE:
1699 RETVAL = cctx_idle; 2941 RETVAL = cctx_idle;
1700 OUTPUT: 2942 OUTPUT:
1701 RETVAL 2943 RETVAL
1702 2944
1703void 2945void
1704list () 2946list ()
2947 PROTOTYPE:
1705 PPCODE: 2948 PPCODE:
1706{ 2949{
1707 struct coro *coro; 2950 struct coro *coro;
1708 for (coro = coro_first; coro; coro = coro->next) 2951 for (coro = coro_first; coro; coro = coro->next)
1709 if (coro->hv) 2952 if (coro->hv)
… …
1714call (Coro::State coro, SV *coderef) 2957call (Coro::State coro, SV *coderef)
1715 ALIAS: 2958 ALIAS:
1716 eval = 1 2959 eval = 1
1717 CODE: 2960 CODE:
1718{ 2961{
1719 if (coro->mainstack) 2962 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1720 { 2963 {
1721 struct coro temp; 2964 struct coro temp;
1722 2965
1723 if (!(coro->flags & CF_RUNNING)) 2966 if (!(coro->flags & CF_RUNNING))
1724 { 2967 {
… …
1768 RETVAL = boolSV (coro->flags & ix); 3011 RETVAL = boolSV (coro->flags & ix);
1769 OUTPUT: 3012 OUTPUT:
1770 RETVAL 3013 RETVAL
1771 3014
1772void 3015void
3016throw (Coro::State self, SV *throw = &PL_sv_undef)
3017 PROTOTYPE: $;$
3018 CODE:
3019{
3020 struct coro *current = SvSTATE_current;
3021 SV **throwp = self == current ? &CORO_THROW : &self->except;
3022 SvREFCNT_dec (*throwp);
3023 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3024}
3025
3026void
1773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3027api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3028 PROTOTYPE: $;$
3029 C_ARGS: aTHX_ coro, flags
1774 3030
1775SV * 3031SV *
1776has_stack (Coro::State coro) 3032has_cctx (Coro::State coro)
1777 PROTOTYPE: $ 3033 PROTOTYPE: $
1778 CODE: 3034 CODE:
1779 RETVAL = boolSV (!!coro->cctx); 3035 /* maybe manage the running flag differently */
3036 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1780 OUTPUT: 3037 OUTPUT:
1781 RETVAL 3038 RETVAL
1782 3039
1783int 3040int
1784is_traced (Coro::State coro) 3041is_traced (Coro::State coro)
… …
1786 CODE: 3043 CODE:
1787 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3044 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1788 OUTPUT: 3045 OUTPUT:
1789 RETVAL 3046 RETVAL
1790 3047
1791IV 3048UV
1792rss (Coro::State coro) 3049rss (Coro::State coro)
1793 PROTOTYPE: $ 3050 PROTOTYPE: $
1794 ALIAS: 3051 ALIAS:
1795 usecount = 1 3052 usecount = 1
1796 CODE: 3053 CODE:
… …
1800 case 1: RETVAL = coro->usecount; break; 3057 case 1: RETVAL = coro->usecount; break;
1801 } 3058 }
1802 OUTPUT: 3059 OUTPUT:
1803 RETVAL 3060 RETVAL
1804 3061
3062void
3063force_cctx ()
3064 PROTOTYPE:
3065 CODE:
3066 cctx_current->idle_sp = 0;
3067
3068void
3069swap_defsv (Coro::State self)
3070 PROTOTYPE: $
3071 ALIAS:
3072 swap_defav = 1
3073 CODE:
3074 if (!self->slot)
3075 croak ("cannot swap state with coroutine that has no saved state,");
3076 else
3077 {
3078 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3079 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3080
3081 SV *tmp = *src; *src = *dst; *dst = tmp;
3082 }
3083
1805 3084
1806MODULE = Coro::State PACKAGE = Coro 3085MODULE = Coro::State PACKAGE = Coro
1807 3086
1808BOOT: 3087BOOT:
1809{ 3088{
1810 int i; 3089 int i;
1811 3090
1812 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3091 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1813 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3092 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3093 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3094 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3095 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3096 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3097 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3098 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
1815 3099
1816 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3100 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1817 SvREADONLY_on (coro_current); 3101 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3102 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3103 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1818 3104
1819 coro_stash = gv_stashpv ("Coro", TRUE); 3105 coro_stash = gv_stashpv ("Coro", TRUE);
1820 3106
1821 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3107 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1822 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3108 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
1827 3113
1828 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3114 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1829 coro_ready[i] = newAV (); 3115 coro_ready[i] = newAV ();
1830 3116
1831 { 3117 {
1832 SV *sv = perl_get_sv ("Coro::API", TRUE); 3118 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1833 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1834 3119
1835 coroapi.schedule = api_schedule; 3120 coroapi.schedule = api_schedule;
3121 coroapi.schedule_to = api_schedule_to;
1836 coroapi.cede = api_cede; 3122 coroapi.cede = api_cede;
1837 coroapi.cede_notself = api_cede_notself; 3123 coroapi.cede_notself = api_cede_notself;
1838 coroapi.ready = api_ready; 3124 coroapi.ready = api_ready;
1839 coroapi.is_ready = api_is_ready; 3125 coroapi.is_ready = api_is_ready;
1840 coroapi.nready = &coro_nready; 3126 coroapi.nready = coro_nready;
1841 coroapi.current = coro_current; 3127 coroapi.current = coro_current;
1842 3128
1843 GCoroAPI = &coroapi; 3129 /*GCoroAPI = &coroapi;*/
1844 sv_setiv (sv, (IV)&coroapi); 3130 sv_setiv (sv, (IV)&coroapi);
1845 SvREADONLY_on (sv); 3131 SvREADONLY_on (sv);
1846 } 3132 }
1847} 3133}
3134
3135void
3136terminate (...)
3137 CODE:
3138 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3139
3140void
3141schedule (...)
3142 CODE:
3143 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3144
3145void
3146schedule_to (...)
3147 CODE:
3148 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3149
3150void
3151cede_to (...)
3152 CODE:
3153 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3154
3155void
3156cede (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_cede);
3159
3160void
3161cede_notself (...)
3162 CODE:
3163 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3164
3165void
3166_cancel (Coro::State self)
3167 CODE:
3168 coro_state_destroy (aTHX_ self);
3169 coro_call_on_destroy (aTHX_ self);
1848 3170
1849void 3171void
1850_set_current (SV *current) 3172_set_current (SV *current)
1851 PROTOTYPE: $ 3173 PROTOTYPE: $
1852 CODE: 3174 CODE:
1853 SvREFCNT_dec (SvRV (coro_current)); 3175 SvREFCNT_dec (SvRV (coro_current));
1854 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3176 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3177
3178void
3179_set_readyhook (SV *hook)
3180 PROTOTYPE: $
3181 CODE:
3182 SvREFCNT_dec (coro_readyhook);
3183 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1855 3184
1856int 3185int
1857prio (Coro::State coro, int newprio = 0) 3186prio (Coro::State coro, int newprio = 0)
3187 PROTOTYPE: $;$
1858 ALIAS: 3188 ALIAS:
1859 nice = 1 3189 nice = 1
1860 CODE: 3190 CODE:
1861{ 3191{
1862 RETVAL = coro->prio; 3192 RETVAL = coro->prio;
… …
1877 3207
1878SV * 3208SV *
1879ready (SV *self) 3209ready (SV *self)
1880 PROTOTYPE: $ 3210 PROTOTYPE: $
1881 CODE: 3211 CODE:
1882 RETVAL = boolSV (api_ready (self)); 3212 RETVAL = boolSV (api_ready (aTHX_ self));
1883 OUTPUT: 3213 OUTPUT:
1884 RETVAL 3214 RETVAL
1885 3215
1886int 3216int
1887nready (...) 3217nready (...)
… …
1890 RETVAL = coro_nready; 3220 RETVAL = coro_nready;
1891 OUTPUT: 3221 OUTPUT:
1892 RETVAL 3222 RETVAL
1893 3223
1894void 3224void
1895throw (Coro::State self, SV *throw = &PL_sv_undef) 3225_pool_handler (...)
1896 PROTOTYPE: $;$ 3226 CODE:
1897 CODE: 3227 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1898 SvREFCNT_dec (self->throw);
1899 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1900 3228
1901# for async_pool speedup
1902void 3229void
1903_pool_1 (SV *cb) 3230async_pool (SV *cv, ...)
3231 PROTOTYPE: &@
3232 PPCODE:
3233{
3234 HV *hv = (HV *)av_pop (av_async_pool);
3235 AV *av = newAV ();
3236 SV *cb = ST (0);
3237 int i;
3238
3239 av_extend (av, items - 2);
3240 for (i = 1; i < items; ++i)
3241 av_push (av, SvREFCNT_inc_NN (ST (i)));
3242
3243 if ((SV *)hv == &PL_sv_undef)
3244 {
3245 PUSHMARK (SP);
3246 EXTEND (SP, 2);
3247 PUSHs (sv_Coro);
3248 PUSHs ((SV *)cv_pool_handler);
3249 PUTBACK;
3250 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3251 SPAGAIN;
3252
3253 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3254 }
3255
3256 {
3257 struct coro *coro = SvSTATE_hv (hv);
3258
3259 assert (!coro->invoke_cb);
3260 assert (!coro->invoke_av);
3261 coro->invoke_cb = SvREFCNT_inc (cb);
3262 coro->invoke_av = av;
3263 }
3264
3265 api_ready (aTHX_ (SV *)hv);
3266
3267 if (GIMME_V != G_VOID)
3268 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3269 else
3270 SvREFCNT_dec (hv);
3271}
3272
3273SV *
3274rouse_cb ()
3275 PROTOTYPE:
1904 CODE: 3276 CODE:
1905{ 3277 RETVAL = coro_new_rouse_cb (aTHX);
1906 struct coro *coro = SvSTATE (coro_current);
1907 HV *hv = (HV *)SvRV (coro_current);
1908 AV *defav = GvAV (PL_defgv);
1909 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1910 AV *invoke_av;
1911 int i, len;
1912
1913 if (!invoke)
1914 croak ("\3async_pool terminate\2\n");
1915
1916 SvREFCNT_dec (coro->saved_deffh);
1917 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1918
1919 hv_store (hv, "desc", sizeof ("desc") - 1,
1920 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1921
1922 invoke_av = (AV *)SvRV (invoke);
1923 len = av_len (invoke_av);
1924
1925 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1926
1927 if (len > 0)
1928 {
1929 av_fill (defav, len - 1);
1930 for (i = 0; i < len; ++i)
1931 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1932 }
1933
1934 SvREFCNT_dec (invoke);
1935}
1936
1937void
1938_pool_2 (SV *cb)
1939 CODE:
1940{
1941 struct coro *coro = SvSTATE (coro_current);
1942
1943 sv_setsv (cb, &PL_sv_undef);
1944
1945 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1946 coro->saved_deffh = 0;
1947
1948 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1949 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1950 croak ("\3async_pool terminate\2\n");
1951
1952 av_clear (GvAV (PL_defgv));
1953 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1954 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1955
1956 coro->prio = 0;
1957
1958 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1959 api_trace (coro_current, 0);
1960
1961 av_push (av_async_pool, newSVsv (coro_current));
1962}
1963
1964
1965MODULE = Coro::State PACKAGE = Coro::AIO
1966
1967SV *
1968_get_state ()
1969 CODE:
1970{
1971 struct io_state *data;
1972
1973 RETVAL = newSV (sizeof (struct io_state));
1974 data = (struct io_state *)SvPVX (RETVAL);
1975 SvCUR_set (RETVAL, sizeof (struct io_state));
1976 SvPOK_only (RETVAL);
1977
1978 data->errorno = errno;
1979 data->laststype = PL_laststype;
1980 data->laststatval = PL_laststatval;
1981 data->statcache = PL_statcache;
1982}
1983 OUTPUT: 3278 OUTPUT:
1984 RETVAL 3279 RETVAL
1985 3280
1986void 3281void
1987_set_state (char *data_) 3282rouse_wait (...)
1988 PROTOTYPE: $ 3283 PROTOTYPE: ;$
3284 PPCODE:
3285 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3286
3287
3288MODULE = Coro::State PACKAGE = PerlIO::cede
3289
3290BOOT:
3291 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3292
3293
3294MODULE = Coro::State PACKAGE = Coro::Semaphore
3295
3296SV *
3297new (SV *klass, SV *count = 0)
1989 CODE: 3298 CODE:
1990{ 3299 RETVAL = sv_bless (
1991 struct io_state *data = (void *)data_; 3300 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3301 GvSTASH (CvGV (cv))
3302 );
3303 OUTPUT:
3304 RETVAL
1992 3305
1993 errno = data->errorno; 3306# helper for Coro::Channel
1994 PL_laststype = data->laststype; 3307SV *
1995 PL_laststatval = data->laststatval; 3308_alloc (int count)
1996 PL_statcache = data->statcache; 3309 CODE:
1997} 3310 RETVAL = coro_waitarray_new (aTHX_ count);
3311 OUTPUT:
3312 RETVAL
1998 3313
3314SV *
3315count (SV *self)
3316 CODE:
3317 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3318 OUTPUT:
3319 RETVAL
3320
3321void
3322up (SV *self, int adjust = 1)
3323 ALIAS:
3324 adjust = 1
3325 CODE:
3326 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3327
3328void
3329down (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3332
3333void
3334wait (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3337
3338void
3339try (SV *self)
3340 PPCODE:
3341{
3342 AV *av = (AV *)SvRV (self);
3343 SV *count_sv = AvARRAY (av)[0];
3344 IV count = SvIVX (count_sv);
3345
3346 if (count > 0)
3347 {
3348 --count;
3349 SvIVX (count_sv) = count;
3350 XSRETURN_YES;
3351 }
3352 else
3353 XSRETURN_NO;
3354}
3355
3356void
3357waiters (SV *self)
3358 PPCODE:
3359{
3360 AV *av = (AV *)SvRV (self);
3361 int wcount = AvFILLp (av) + 1 - 1;
3362
3363 if (GIMME_V == G_SCALAR)
3364 XPUSHs (sv_2mortal (newSViv (wcount)));
3365 else
3366 {
3367 int i;
3368 EXTEND (SP, wcount);
3369 for (i = 1; i <= wcount; ++i)
3370 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3371 }
3372}
3373
3374MODULE = Coro::State PACKAGE = Coro::Signal
3375
3376SV *
3377new (SV *klass)
3378 CODE:
3379 RETVAL = sv_bless (
3380 coro_waitarray_new (aTHX_ 0),
3381 GvSTASH (CvGV (cv))
3382 );
3383 OUTPUT:
3384 RETVAL
3385
3386void
3387wait (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3390
3391void
3392broadcast (SV *self)
3393 CODE:
3394{
3395 AV *av = (AV *)SvRV (self);
3396 coro_signal_wake (aTHX_ av, AvFILLp (av));
3397}
3398
3399void
3400send (SV *self)
3401 CODE:
3402{
3403 AV *av = (AV *)SvRV (self);
3404
3405 if (AvFILLp (av))
3406 coro_signal_wake (aTHX_ av, 1);
3407 else
3408 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3409}
3410
3411IV
3412awaited (SV *self)
3413 CODE:
3414 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3415 OUTPUT:
3416 RETVAL
3417
3418
3419MODULE = Coro::State PACKAGE = Coro::AnyEvent
3420
3421BOOT:
3422 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3423
3424void
3425_schedule (...)
3426 CODE:
3427{
3428 static int incede;
3429
3430 api_cede_notself (aTHX);
3431
3432 ++incede;
3433 while (coro_nready >= incede && api_cede (aTHX))
3434 ;
3435
3436 sv_setsv (sv_activity, &PL_sv_undef);
3437 if (coro_nready >= incede)
3438 {
3439 PUSHMARK (SP);
3440 PUTBACK;
3441 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3442 }
3443
3444 --incede;
3445}
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::AIO
3449
3450void
3451_register (char *target, char *proto, SV *req)
3452 CODE:
3453{
3454 CV *req_cv = coro_sv_2cv (aTHX_ req);
3455 /* newXSproto doesn't return the CV on 5.8 */
3456 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3457 sv_setpv ((SV *)slf_cv, proto);
3458 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3459}
3460

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