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Comparing Coro/Coro/State.xs (file contents):
Revision 1.206 by root, Tue Oct 9 15:45:26 2007 UTC vs.
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 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 "schmorp.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
23# include <inttypes.h> /* most portable stdint.h */
24#endif
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48
49#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \
53 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
54
55#if !PERL_VERSION_ATLEAST (5,6,0)
56# ifndef PL_ppaddr
57# define PL_ppaddr ppaddr
58# endif
59# ifndef call_sv
60# define call_sv perl_call_sv
61# endif
62# ifndef get_sv
63# define get_sv perl_get_sv
64# endif
65# ifndef get_cv
66# define get_cv perl_get_cv
67# endif
68# ifndef IS_PADGV
69# define IS_PADGV(v) 0
70# endif
71# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0
73# endif
74#endif
75
76/* 5.8.7 */
77#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v)
79#endif
80
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88 55
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
91#endif 58#endif
92 59
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 67#endif
101 68
102/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 70 * portable way as possible. */
71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
73# define STACKLEVEL __builtin_frame_address (0)
74#else
104#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
105#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
106 78
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
108 80
109#if __GNUC__ >= 3 81#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
113#else 85#else
114# define attribute(x) 86# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
117#endif 89#endif
118 90
119#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
121 93
122#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
123 95
124#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
125 98
126#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 100# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 103#endif
134 104
135#define strpair(const) const, sizeof (const) - 1 105#ifdef __linux
106# include <time.h> /* for timespec */
107# include <syscall.h> /* for SYS_* */
108# ifdef SYS_clock_gettime
109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
136 114
137/* helper storage struct for Coro::AIO */ 115static double (*nvtime)(); /* so why doesn't it take void? */
138struct io_state 116static void (*u2time)(pTHX_ UV ret[2]);
139{
140 int errorno;
141 I32 laststype;
142 int laststatval;
143 Stat_t statcache;
144};
145 117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121
122static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 126static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
152 133
153static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
155 136static SV *rv_diehook;
137static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 139
160/* async_pool helper stuff */ 140/* async_pool helper stuff */
161static SV *sv_pool_rss; 141static SV *sv_pool_rss;
162static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
163static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
148
149/* Coro::AnyEvent */
150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
164 157
165static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
167 160
168enum { 161enum {
… …
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 168};
176 169
177/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 171typedef struct coro_cctx
172{
179 struct coro_cctx *next; 173 struct coro_cctx *next;
180 174
181 /* the stack */ 175 /* the stack */
182 void *sptr; 176 void *sptr;
183 size_t ssize; 177 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 182 JMPENV *top_env;
189 coro_context cctx; 183 coro_context cctx;
190 184
185 U32 gen;
191#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
192 int valgrind_id; 187 int valgrind_id;
193#endif 188#endif
194 unsigned char flags; 189 unsigned char flags;
195} coro_cctx; 190} coro_cctx;
196 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
197enum { 196enum {
198 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
199 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
200 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
202}; 202};
203 203
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 205typedef struct
206{
206 SV *defsv; 207 SV *defsv;
207 AV *defav; 208 AV *defav;
208 SV *errsv; 209 SV *errsv;
209 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
210#define VAR(name,type) type name; 212#define VAR(name,type) type name;
211# include "state.h" 213# include "state.h"
212#undef VAR 214#undef VAR
213} perl_slots; 215} perl_slots;
214 216
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 218
217/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
218struct coro { 220struct coro {
219 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 222 coro_cctx *cctx;
221 223
222 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 229 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
225 231
232 CV *startcv; /* the CV to execute */
226 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
230 238
231 /* statistics */ 239 /* statistics */
232 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
233 241
234 /* coro process data */ 242 /* coro process data */
235 int prio; 243 int prio;
236 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
237 246
238 /* async_pool */ 247 /* async_pool */
239 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
240 258
241 /* linked list */ 259 /* linked list */
242 struct coro *next, *prev; 260 struct coro *next, *prev;
243}; 261};
244 262
245typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
247 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
248/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
249 272
250#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
251#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
252#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
253#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
254#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
255#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
256 279
257/* for Coro.pm */ 280/* for Coro.pm */
258static SV *coro_current; 281static SV *coro_current;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static SV *coro_readyhook;
260static int coro_nready; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate;
261static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
262 307
263/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
264 309
265static SV * 310static SV *
266coro_get_sv (const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
267{ 312{
268#if PERL_VERSION_ATLEAST (5,9,0) 313#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 315 get_sv (name, create);
271#endif 316#endif
272 return get_sv (name, create); 317 return get_sv (name, create);
273} 318}
274 319
275static AV * 320static AV *
276coro_get_av (const char *name, int create) 321coro_get_av (pTHX_ const char *name, int create)
277{ 322{
278#if PERL_VERSION_ATLEAST (5,9,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 325 get_av (name, create);
281#endif 326#endif
282 return get_av (name, create); 327 return get_av (name, create);
283} 328}
284 329
285static HV * 330static HV *
286coro_get_hv (const char *name, int create) 331coro_get_hv (pTHX_ const char *name, int create)
287{ 332{
288#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 334 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 335 get_hv (name, create);
291#endif 336#endif
292 return get_hv (name, create); 337 return get_hv (name, create);
293} 338}
294 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
295static AV * 439static AV *
296coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
297{ 441{
298 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
300 444
301 newpadlist = newAV (); 445 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 446 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 447#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 448 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 449#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 451#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 453 --AvFILLp (padlist);
310 454
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
312 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
313 457
314 return newpadlist; 458 return newpadlist;
315} 459}
316 460
317static void 461static void
318free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
319{ 463{
320 /* may be during global destruction */ 464 /* may be during global destruction */
321 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
322 { 466 {
323 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
324 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
325 { 470 {
326 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
327 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
328 { 473 I32 j = AvFILLp (av);
329 SV *sv; 474
330 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
331 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
332
333 SvREFCNT_dec (*svp);
334 }
335 } 480 }
336 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
337 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
338 } 486 }
339} 487}
340 488
341static int 489static int
342coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
343{ 491{
344 AV *padlist; 492 AV *padlist;
345 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
346 498
347 /* casting is fun. */ 499 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
350 502
351 SvREFCNT_dec (av); 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 504
353 return 0; 505 return 0;
354} 506}
355 507
356#define PERL_MAGIC_coro PERL_MAGIC_ext 508static MGVTBL coro_cv_vtbl = {
357 509 0, 0, 0, 0,
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 510 coro_cv_free
359 511};
360#define CORO_MAGIC(cv) \
361 SvMAGIC (cv) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
363 ? SvMAGIC (cv) \
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
365 : 0
366
367static struct coro *
368SvSTATE_ (pTHX_ SV *coro)
369{
370 HV *stash;
371 MAGIC *mg;
372
373 if (SvROK (coro))
374 coro = SvRV (coro);
375
376 if (expect_false (SvTYPE (coro) != SVt_PVHV))
377 croak ("Coro::State object required");
378
379 stash = SvSTASH (coro);
380 if (expect_false (stash != coro_stash && stash != coro_state_stash))
381 {
382 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required");
385 }
386
387 mg = CORO_MAGIC (coro);
388 return (struct coro *)mg->mg_ptr;
389}
390
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 512
393/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
394static void 514static void
395get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
396{ 516{
397 MAGIC *mg = CORO_MAGIC (cv); 517 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 518 AV *av;
399 519
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 520 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 521 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 522 else
403 { 523 {
404#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 525 /* this is probably cleaner? but also slower! */
526 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
410#else 531#else
411 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
412#endif 533#endif
413 } 534 }
414} 535}
415 536
416static void 537static void
417put_padlist (pTHX_ CV *cv) 538put_padlist (pTHX_ CV *cv)
418{ 539{
419 MAGIC *mg = CORO_MAGIC (cv); 540 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 541 AV *av;
421 542
422 if (expect_false (!mg)) 543 if (expect_false (!mg))
423 { 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426 mg->mg_virtual = &vtbl_coro;
427 mg->mg_obj = (SV *)newAV ();
428 }
429 545
430 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
431 547
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
434 550
435 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
436} 552}
437 553
438/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
439 558
440static void 559static void
441load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
442{ 561{
443 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
444 c->slot = 0; 563 c->slot = 0;
445 564
446 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
447 566
448 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
449 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
450 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
451 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
452 572
453 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
454 # include "state.h" 574 # include "state.h"
455 #undef VAR 575 #undef VAR
456
457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459 576
460 { 577 {
461 dSP; 578 dSP;
462 579
463 CV *cv; 580 CV *cv;
… …
470 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
471 } 588 }
472 589
473 PUTBACK; 590 PUTBACK;
474 } 591 }
592
593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
475} 611}
476 612
477static void 613static void
478save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
479{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
633 c->slf_frame = slf_frame;
634
480 { 635 {
481 dSP; 636 dSP;
482 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
494 { 649 {
495 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
496 { 651 {
497 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
498 653
499 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
500 { 655 {
501 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
502 657
503 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
504 { 659 {
505 EXTEND (SP, 3); 660 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 661 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 662 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 663 PUSHs ((SV *)cv);
509 664
510 CvDEPTH (cv) = 0; 665 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 666 get_padlist (aTHX_ cv);
512 } 667 }
… …
528 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
529 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
532 { 687 {
533 int i; 688 unsigned int i;
534 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
535 CXINC; 690 CXINC;
536 } 691 }
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
538 693
539 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
540 695
541 { 696 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543 698
544 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
545 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
546 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
547 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
548 704
549 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
550 # include "state.h" 706 # include "state.h"
551 #undef VAR 707 #undef VAR
552 } 708 }
553} 709}
554 710
555/* 711/*
556 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
560 */ 716 */
561#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
563#else 719#else
564static void 720static void
565coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
566{ 722{
567 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
592 748
593 New(54,PL_savestack,24,ANY); 749 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 750 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 751 PL_savestack_max = 24;
596 752
597#if !PERL_VERSION_ATLEAST (5,9,0) 753#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 754 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 755 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 756 PL_retstack_max = 4;
601#endif 757#endif
602} 758}
… …
604 760
605/* 761/*
606 * destroy the stacks, the callchain etc... 762 * destroy the stacks, the callchain etc...
607 */ 763 */
608static void 764static void
609coro_destroy_stacks (pTHX) 765coro_destruct_stacks (pTHX)
610{ 766{
611 while (PL_curstackinfo->si_next) 767 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 768 PL_curstackinfo = PL_curstackinfo->si_next;
613 769
614 while (PL_curstackinfo) 770 while (PL_curstackinfo)
… …
625 781
626 Safefree (PL_tmps_stack); 782 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 783 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 784 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 785 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 787 Safefree (PL_retstack);
632#endif 788#endif
633} 789}
634 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
635static size_t 800static size_t
636coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
637{ 802{
638 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
639 804
640 if (coro->mainstack) 805 if (coro->mainstack)
641 { 806 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
646 { 808 {
647 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
648 810 CORO_RSS;
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR 811 #undef SYM
652 } 812 }
653 else 813 else
654 slot = coro->slot; 814 {
815 #define SYM(sym) coro->slot->sym
816 CORO_RSS;
817 #undef SYM
818 }
819 }
655 820
656 rss += sizeof (slot->curstackinfo); 821 return rss;
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 822}
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663 823
664#if !PERL_VERSION_ATLEAST (5,9,0) 824/** coroutine stack handling ************************************************/
665 rss += slot->retstack_max * sizeof (OP *); 825
826static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
827static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
828static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
829
830/* apparently < 5.8.8 */
831#ifndef MgPV_nolen_const
832#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
833 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
834 (const char*)(mg)->mg_ptr)
666#endif 835#endif
836
837/*
838 * This overrides the default magic get method of %SIG elements.
839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
840 * and instead of trying to save and restore the hash elements, we just provide
841 * readback here.
842 */
843static int
844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
845{
846 const char *s = MgPV_nolen_const (mg);
847
848 if (*s == '_')
667 } 849 {
850 SV **svp = 0;
668 851
852 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
853 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
854
855 if (svp)
856 {
857 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
858 return 0;
859 }
860 }
861
862 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
863}
864
865static int
866coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
867{
868 const char *s = MgPV_nolen_const (mg);
869
870 if (*s == '_')
871 {
872 SV **svp = 0;
873
874 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
875 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
876
877 if (svp)
878 {
879 SV *old = *svp;
880 *svp = 0;
881 SvREFCNT_dec (old);
882 return 0;
883 }
884 }
885
886 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
887}
888
889static int
890coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
891{
892 const char *s = MgPV_nolen_const (mg);
893
894 if (*s == '_')
895 {
896 SV **svp = 0;
897
898 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
900
901 if (svp)
902 {
903 SV *old = *svp;
904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
905 SvREFCNT_dec (old);
906 return 0;
907 }
908 }
909
910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
911}
912
913static void
914prepare_nop (pTHX_ struct coro_transfer_args *ta)
915{
916 /* kind of mega-hacky, but works */
917 ta->next = ta->prev = (struct coro *)ta;
918}
919
920static int
921slf_check_nop (pTHX_ struct CoroSLF *frame)
922{
669 return rss; 923 return 0;
670} 924}
671 925
672/** coroutine stack handling ************************************************/
673
674static void 926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
675coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
676{ 936{
677 /* 937 /*
678 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
679 */ 939 */
… …
681 941
682 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
683 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
684 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
685 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
686 PL_curpm = 0; 949 PL_curpm = 0;
687 PL_curpad = 0; 950 PL_curpad = 0;
688 PL_localizing = 0; 951 PL_localizing = 0;
689 PL_dirty = 0; 952 PL_dirty = 0;
690 PL_restartop = 0; 953 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 954#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 955 PL_parser = 0;
956#endif
957 PL_hints = 0;
958
959 /* recreate the die/warn hooks */
960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693 962
694 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
698 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 970
701 { 971 {
702 dSP; 972 dSP;
703 LOGOP myop; 973 UNOP myop;
704 974
705 Zero (&myop, 1, LOGOP); 975 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
707 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
708 979
709 PUSHMARK (SP); 980 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
711 PUTBACK; 982 PUTBACK;
712 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN;
715 } 985 }
716 986
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 987 /* this newly created coroutine might be run on an existing cctx which most
718} 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
989 */
990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
719 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
720static void 1011static void
721coro_destroy (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
722{ 1013{
723 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
724 { 1015 {
725 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
734 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
735 1026
736 /* unwind main stack */ 1027 /* unwind main stack */
737 dounwind (-1); 1028 dounwind (-1);
738 } 1029 }
1030}
739 1031
740 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
741 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
742 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
743 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
744 SvREFCNT_dec (PL_rs);
745 SvREFCNT_dec (GvSV (irsgv));
746 1036
747 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook);
749 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
750 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
752 1071 SvREFCNT_dec (coro->invoke_cb);
753 coro_destroy_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
754} 1074}
755 1075
756static void 1076INLINE void
757free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
758{ 1078{
759 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
760 { 1080 {
761 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
766static int 1086static int
767runops_trace (pTHX) 1087runops_trace (pTHX)
768{ 1088{
769 COP *oldcop = 0; 1089 COP *oldcop = 0;
770 int oldcxix = -2; 1090 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx;
773 1091
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 { 1093 {
776 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
777 1095
778 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
779 { 1097 {
780 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
781 { 1099 {
782 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
783 SV **bot, **top; 1101 SV **bot, **top;
784 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
785 SV **cb; 1103 SV **cb;
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 1113 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 1114 : bot;
797 1115
798 av_extend (av, top - bot); 1116 av_extend (av, top - bot);
799 while (bot < top) 1117 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 1118 av_push (av, SvREFCNT_inc_NN (*bot++));
801 1119
802 PL_runops = RUNOPS_DEFAULT; 1120 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 1121 ENTER;
804 SAVETMPS; 1122 SAVETMPS;
805 EXTEND (SP, 3); 1123 EXTEND (SP, 3);
806 PUSHMARK (SP); 1124 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 1125 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 1126 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1127 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 1128 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1129 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1130 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 1131 SPAGAIN;
814 FREETMPS; 1132 FREETMPS;
815 LEAVE; 1133 LEAVE;
816 PL_runops = runops_trace; 1134 PL_runops = runops_trace;
… …
822 1140
823 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
824 { 1142 {
825 SV **cb; 1143 SV **cb;
826 1144
827 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
828 { 1146 {
829 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
830 1148
831 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
832 { 1150 {
833 runops_proc_t old_runops = PL_runops;
834 dSP; 1151 dSP;
835 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
836 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
837 1154
838 if (isGV (gv)) 1155 if (isGV (gv))
… …
843 SAVETMPS; 1160 SAVETMPS;
844 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
845 PUSHMARK (SP); 1162 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 1164 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 1166 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1167 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1169 SPAGAIN;
853 FREETMPS; 1170 FREETMPS;
854 LEAVE; 1171 LEAVE;
855 PL_runops = runops_trace; 1172 PL_runops = runops_trace;
856 } 1173 }
857 1174
858 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
859 } 1176 }
860 1177
861 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
862 { 1179 {
863 dSP; 1180 dSP;
864 1181
865 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
866 ENTER; 1183 ENTER;
… …
869 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1187 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1188 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1189 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1190 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1191 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1192 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1193 SPAGAIN;
877 FREETMPS; 1194 FREETMPS;
878 LEAVE; 1195 LEAVE;
879 PL_runops = runops_trace; 1196 PL_runops = runops_trace;
… …
885 1202
886 TAINT_NOT; 1203 TAINT_NOT;
887 return 0; 1204 return 0;
888} 1205}
889 1206
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1207static struct CoroSLF cctx_ssl_frame;
891/* _cctx_init should be careful, as it could be called at almost any time */ 1208
892/* during execution of a perl program */ 1209static void
1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1211{
1212 ta->prev = 0;
1213}
1214
1215static int
1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1217{
1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
893static void NOINLINE 1224static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
895{ 1226{
896 dSP;
897 LOGOP myop;
898
899 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
900 1228
901 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
902 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
903 1231
904 Zero (&myop, 1, LOGOP); 1232 /* we already must be executing an SLF op, there is no other valid way
905 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
907 1236
908 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
909 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1239
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
912 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
913 PL_op = (OP *)&myop; 1242}
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1243
915 SPAGAIN; 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1245INLINE void
1246transfer_tail (pTHX)
1247{
1248 free_coro_mortal (aTHX);
916} 1249}
917 1250
918/* 1251/*
919 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
920 */ 1253 */
921static void 1254static void
922cctx_run (void *arg) 1255cctx_run (void *arg)
923{ 1256{
1257#ifdef USE_ITHREADS
1258# if CORO_PTHREAD
1259 PERL_SET_CONTEXT (coro_thx);
1260# endif
1261#endif
1262 {
924 dTHX; 1263 dTHX;
925 1264
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1265 /* normally we would need to skip the entersub here */
927 UNLOCK; 1266 /* not doing so will re-execute it, which is exactly what we want */
928
929 /* we now skip the entersub that lead to transfer() */
930 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
931 1268
932 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
934 1271
1272 /* cctx_run is the alternative tail of transfer() */
1273 transfer_tail (aTHX);
1274
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
938
939 /* 1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1281 * runtime errors here, as this is just a random interpreter, not a thread.
1282 */
1283
1284 /*
940 * If perl-run returns we assume exit() was being called or the coro 1285 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug) 1286 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the 1287 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main" 1288 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1289 * coroutine as Coro has no such concept.
1290 * This actually isn't valid with the pthread backend, but OSes requiring
1291 * that backend are too broken to do it in a standards-compliant way.
945 */ 1292 */
946 PL_top_env = main_top_env; 1293 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1294 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1295 }
948} 1296}
949 1297
950static coro_cctx * 1298static coro_cctx *
951cctx_new () 1299cctx_new ()
952{ 1300{
953 coro_cctx *cctx; 1301 coro_cctx *cctx;
1302
1303 ++cctx_count;
1304 New (0, cctx, 1, coro_cctx);
1305
1306 cctx->gen = cctx_gen;
1307 cctx->flags = 0;
1308 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1309
1310 return cctx;
1311}
1312
1313/* create a new cctx only suitable as source */
1314static coro_cctx *
1315cctx_new_empty ()
1316{
1317 coro_cctx *cctx = cctx_new ();
1318
1319 cctx->sptr = 0;
1320 coro_create (&cctx->cctx, 0, 0, 0, 0);
1321
1322 return cctx;
1323}
1324
1325/* create a new cctx suitable as destination/running a perl interpreter */
1326static coro_cctx *
1327cctx_new_run ()
1328{
1329 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1330 void *stack_start;
955 size_t stack_size; 1331 size_t stack_size;
956 1332
957 ++cctx_count;
958
959 Newz (0, cctx, 1, coro_cctx);
960
961#if HAVE_MMAP 1333#if HAVE_MMAP
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1334 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1335 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1336 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1337
966 if (cctx->sptr != (void *)-1) 1338 if (cctx->sptr != (void *)-1)
967 { 1339 {
968# if CORO_STACKGUARD 1340 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1341 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1342 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1343 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1344 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1345 cctx->flags |= CC_MAPPED;
974 } 1346 }
975 else 1347 else
976#endif 1348#endif
977 { 1349 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1350 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1351 New (0, cctx->sptr, cctx_stacksize, long);
980 1352
981 if (!cctx->sptr) 1353 if (!cctx->sptr)
982 { 1354 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1355 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1356 _exit (EXIT_FAILURE);
985 } 1357 }
986 1358
987 stack_start = cctx->sptr; 1359 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1360 stack_size = cctx->ssize;
989 } 1361 }
990 1362
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1363 #if CORO_USE_VALGRIND
1364 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1365 #endif
1366
992 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1367 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1368
994 return cctx; 1369 return cctx;
995} 1370}
996 1371
… …
998cctx_destroy (coro_cctx *cctx) 1373cctx_destroy (coro_cctx *cctx)
999{ 1374{
1000 if (!cctx) 1375 if (!cctx)
1001 return; 1376 return;
1002 1377
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1379
1003 --cctx_count; 1380 --cctx_count;
1381 coro_destroy (&cctx->cctx);
1004 1382
1383 /* coro_transfer creates new, empty cctx's */
1384 if (cctx->sptr)
1385 {
1005#if CORO_USE_VALGRIND 1386 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1387 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1388 #endif
1389
1390#if HAVE_MMAP
1391 if (cctx->flags & CC_MAPPED)
1392 munmap (cctx->sptr, cctx->ssize);
1393 else
1007#endif 1394#endif
1008
1009#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize);
1012 else
1013#endif
1014 Safefree (cctx->sptr); 1395 Safefree (cctx->sptr);
1396 }
1015 1397
1016 Safefree (cctx); 1398 Safefree (cctx);
1017} 1399}
1018 1400
1019/* wether this cctx should be destructed */ 1401/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1402#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1403
1022static coro_cctx * 1404static coro_cctx *
1023cctx_get (pTHX) 1405cctx_get (pTHX)
1024{ 1406{
1025 while (expect_true (cctx_first)) 1407 while (expect_true (cctx_first))
… …
1032 return cctx; 1414 return cctx;
1033 1415
1034 cctx_destroy (cctx); 1416 cctx_destroy (cctx);
1035 } 1417 }
1036 1418
1037 return cctx_new (); 1419 return cctx_new_run ();
1038} 1420}
1039 1421
1040static void 1422static void
1041cctx_put (coro_cctx *cctx) 1423cctx_put (coro_cctx *cctx)
1042{ 1424{
1425 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1426
1043 /* free another cctx if overlimit */ 1427 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1428 if (expect_false (cctx_idle >= cctx_max_idle))
1045 { 1429 {
1046 coro_cctx *first = cctx_first; 1430 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1431 cctx_first = first->next;
1048 --cctx_idle; 1432 --cctx_idle;
1049 1433
… …
1058/** coroutine switching *****************************************************/ 1442/** coroutine switching *****************************************************/
1059 1443
1060static void 1444static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1445transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1446{
1447 /* TODO: throwing up here is considered harmful */
1448
1063 if (expect_true (prev != next)) 1449 if (expect_true (prev != next))
1064 { 1450 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1452 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1067 1453
1068 if (expect_false (next->flags & CF_RUNNING))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070
1071 if (expect_false (next->flags & CF_DESTROYED)) 1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1455 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1073 1456
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1457#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1458 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1459 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1079#endif 1460#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported");
1082 } 1461 }
1083} 1462}
1084 1463
1085/* always use the TRANSFER macro */ 1464/* always use the TRANSFER macro */
1086static void NOINLINE 1465static void NOINLINE /* noinline so we have a fixed stackframe */
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1467{
1089 dSTACKLEVEL; 1468 dSTACKLEVEL;
1090 1469
1091 /* sometimes transfer is only called to set idle_sp */ 1470 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1471 if (expect_false (!prev))
1093 { 1472 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1473 cctx_current->idle_sp = STACKLEVEL;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1474 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1475 }
1097 else if (expect_true (prev != next)) 1476 else if (expect_true (prev != next))
1098 { 1477 {
1099 coro_cctx *prev__cctx; 1478 coro_cctx *cctx_prev;
1100 1479
1101 if (expect_false (prev->flags & CF_NEW)) 1480 if (expect_false (prev->flags & CF_NEW))
1102 { 1481 {
1103 /* create a new empty context */ 1482 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx);
1105 prev->flags &= ~CF_NEW; 1483 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1484 prev->flags |= CF_RUNNING;
1107 } 1485 }
1108 1486
1109 prev->flags &= ~CF_RUNNING; 1487 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1488 next->flags |= CF_RUNNING;
1111 1489
1112 LOCK; 1490 /* first get rid of the old state */
1491 save_perl (aTHX_ prev);
1113 1492
1114 if (expect_false (next->flags & CF_NEW)) 1493 if (expect_false (next->flags & CF_NEW))
1115 { 1494 {
1116 /* need to start coroutine */ 1495 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1496 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1497 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1498 coro_setup (aTHX_ next);
1122 } 1499 }
1123 else 1500 else
1501 load_perl (aTHX_ next);
1502
1503 /* possibly untie and reuse the cctx */
1504 if (expect_true (
1505 cctx_current->idle_sp == STACKLEVEL
1506 && !(cctx_current->flags & CC_TRACE)
1507 && !force_cctx
1508 ))
1124 { 1509 {
1125 /* coroutine already started */ 1510 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1126 save_perl (aTHX_ prev); 1511 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1127 load_perl (aTHX_ next); 1512
1513 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1514 /* without this the next cctx_get might destroy the running cctx while still in use */
1515 if (expect_false (CCTX_EXPIRED (cctx_current)))
1516 if (expect_true (!next->cctx))
1517 next->cctx = cctx_get (aTHX);
1518
1519 cctx_put (cctx_current);
1128 } 1520 }
1521 else
1522 prev->cctx = cctx_current;
1129 1523
1130 prev__cctx = prev->cctx; 1524 ++next->usecount;
1131 1525
1132 /* possibly "free" the cctx */ 1526 cctx_prev = cctx_current;
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1528
1529 next->cctx = 0;
1530
1531 if (expect_false (cctx_prev != cctx_current))
1134 { 1532 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1533 cctx_prev->top_env = PL_top_env;
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1534 PL_top_env = cctx_current->top_env;
1137 1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1138 prev->cctx = 0;
1139
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1142 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1143 if (!next->cctx)
1144 next->cctx = cctx_get (aTHX);
1145
1146 cctx_put (prev__cctx);
1147 } 1536 }
1148 1537
1149 ++next->usecount; 1538 transfer_tail (aTHX);
1150
1151 if (expect_true (!next->cctx))
1152 next->cctx = cctx_get (aTHX);
1153
1154 if (expect_false (prev__cctx != next->cctx))
1155 {
1156 prev__cctx->top_env = PL_top_env;
1157 PL_top_env = next->cctx->top_env;
1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159 }
1160
1161 free_coro_mortal (aTHX);
1162 UNLOCK;
1163
1164 if (expect_false (prev->throw || next->throw))
1165 {
1166 struct coro *coro = SvSTATE (coro_current);
1167
1168 if (coro->throw)
1169 {
1170 SV *exception = coro->throw;
1171 coro->throw = 0;
1172 sv_setsv (ERRSV, exception);
1173 croak (0);
1174 }
1175 }
1176 } 1539 }
1177} 1540}
1178 1541
1179struct transfer_args
1180{
1181 struct coro *prev, *next;
1182};
1183
1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1543#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186 1544
1187/** high level stuff ********************************************************/ 1545/** high level stuff ********************************************************/
1188 1546
1189static int 1547static int
1190coro_state_destroy (pTHX_ struct coro *coro) 1548coro_state_destroy (pTHX_ struct coro *coro)
1191{ 1549{
1192 if (coro->flags & CF_DESTROYED) 1550 if (coro->flags & CF_DESTROYED)
1193 return 0; 1551 return 0;
1552
1553 if (coro->on_destroy && !PL_dirty)
1554 coro->on_destroy (aTHX_ coro);
1194 1555
1195 coro->flags |= CF_DESTROYED; 1556 coro->flags |= CF_DESTROYED;
1196 1557
1197 if (coro->flags & CF_READY) 1558 if (coro->flags & CF_READY)
1198 { 1559 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1560 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */ 1561 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready; 1562 --coro_nready;
1203 UNLOCK;
1204 } 1563 }
1205 else 1564 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1565 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1207 1566
1208 if (coro->mainstack && coro->mainstack != main_mainstack) 1567 if (coro->mainstack
1209 { 1568 && coro->mainstack != main_mainstack
1210 struct coro temp; 1569 && coro->slot
1211 1570 && !PL_dirty)
1212 if (coro->flags & CF_RUNNING)
1213 croak ("FATAL: tried to destroy currently running coroutine");
1214
1215 save_perl (aTHX_ &temp);
1216 load_perl (aTHX_ coro);
1217
1218 coro_destroy (aTHX_ coro); 1571 coro_destruct_perl (aTHX_ coro);
1219
1220 load_perl (aTHX_ &temp);
1221
1222 coro->slot = 0;
1223 }
1224 1572
1225 cctx_destroy (coro->cctx); 1573 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv);
1226 SvREFCNT_dec (coro->args); 1575 SvREFCNT_dec (coro->args);
1576 SvREFCNT_dec (CORO_THROW);
1227 1577
1228 if (coro->next) coro->next->prev = coro->prev; 1578 if (coro->next) coro->next->prev = coro->prev;
1229 if (coro->prev) coro->prev->next = coro->next; 1579 if (coro->prev) coro->prev->next = coro->next;
1230 if (coro == coro_first) coro_first = coro->next; 1580 if (coro == coro_first) coro_first = coro->next;
1231 1581
… …
1269# define MGf_DUP 0 1619# define MGf_DUP 0
1270#endif 1620#endif
1271}; 1621};
1272 1622
1273static void 1623static void
1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1624prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1275{ 1625{
1276 ta->prev = SvSTATE (prev_sv); 1626 ta->prev = SvSTATE (prev_sv);
1277 ta->next = SvSTATE (next_sv); 1627 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1279} 1629}
1280 1630
1281static void 1631static void
1282api_transfer (SV *prev_sv, SV *next_sv) 1632api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1633{
1634 struct coro_transfer_args ta;
1635
1636 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1637 TRANSFER (ta, 1);
1638}
1639
1640/** Coro ********************************************************************/
1641
1642INLINE void
1643coro_enq (pTHX_ struct coro *coro)
1644{
1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1646
1647 SvREFCNT_inc_NN (coro->hv);
1648
1649 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro;
1652}
1653
1654INLINE struct coro *
1655coro_deq (pTHX)
1656{
1657 int prio;
1658
1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1660 {
1661 struct coro **ready = coro_ready [prio];
1662
1663 if (ready [0])
1664 {
1665 struct coro *coro = ready [0];
1666 ready [0] = coro->next_ready;
1667 return coro;
1668 }
1669 }
1670
1671 return 0;
1672}
1673
1674static void
1675invoke_sv_ready_hook_helper (void)
1283{ 1676{
1284 dTHX; 1677 dTHX;
1285 struct transfer_args ta; 1678 dSP;
1286 1679
1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1680 ENTER;
1288 TRANSFER (ta); 1681 SAVETMPS;
1289}
1290 1682
1291/** Coro ********************************************************************/ 1683 PUSHMARK (SP);
1684 PUTBACK;
1685 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1292 1686
1293static void 1687 FREETMPS;
1294coro_enq (pTHX_ SV *coro_sv) 1688 LEAVE;
1295{
1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1297}
1298
1299static SV *
1300coro_deq (pTHX_ int min_prio)
1301{
1302 int prio = PRIO_MAX - PRIO_MIN;
1303
1304 min_prio -= PRIO_MIN;
1305 if (min_prio < 0)
1306 min_prio = 0;
1307
1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
1309 if (AvFILLp (coro_ready [prio]) >= 0)
1310 return av_shift (coro_ready [prio]);
1311
1312 return 0;
1313} 1689}
1314 1690
1315static int 1691static int
1316api_ready (SV *coro_sv) 1692api_ready (pTHX_ SV *coro_sv)
1317{ 1693{
1318 dTHX;
1319 struct coro *coro;
1320
1321 if (SvROK (coro_sv))
1322 coro_sv = SvRV (coro_sv);
1323
1324 coro = SvSTATE (coro_sv); 1694 struct coro *coro = SvSTATE (coro_sv);
1325 1695
1326 if (coro->flags & CF_READY) 1696 if (coro->flags & CF_READY)
1327 return 0; 1697 return 0;
1328 1698
1329 coro->flags |= CF_READY; 1699 coro->flags |= CF_READY;
1330 1700
1331 LOCK; 1701 coro_enq (aTHX_ coro);
1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1702
1333 ++coro_nready; 1703 if (!coro_nready++)
1334 UNLOCK; 1704 if (coroapi.readyhook)
1705 coroapi.readyhook ();
1335 1706
1336 return 1; 1707 return 1;
1337} 1708}
1338 1709
1339static int 1710static int
1340api_is_ready (SV *coro_sv) 1711api_is_ready (pTHX_ SV *coro_sv)
1341{ 1712{
1342 dTHX;
1343 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1713 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1344} 1714}
1345 1715
1346static void 1716/* expects to own a reference to next->hv */
1717INLINE void
1347prepare_schedule (pTHX_ struct transfer_args *ta) 1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1348{ 1719{
1349 SV *prev_sv, *next_sv;
1350
1351 for (;;)
1352 {
1353 LOCK;
1354 next_sv = coro_deq (aTHX_ PRIO_MIN);
1355
1356 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv))
1358 {
1359 dSP;
1360 UNLOCK;
1361
1362 ENTER;
1363 SAVETMPS;
1364
1365 PUSHMARK (SP);
1366 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1368
1369 FREETMPS;
1370 LEAVE;
1371 continue;
1372 }
1373
1374 ta->next = SvSTATE (next_sv);
1375
1376 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */
1382 continue;
1383 }
1384
1385 --coro_nready;
1386 UNLOCK;
1387 break;
1388 }
1389
1390 /* free this only after the transfer */
1391 prev_sv = SvRV (coro_current); 1720 SV *prev_sv = SvRV (coro_current);
1721
1392 ta->prev = SvSTATE (prev_sv); 1722 ta->prev = SvSTATE_hv (prev_sv);
1723 ta->next = next;
1724
1393 TRANSFER_CHECK (*ta); 1725 TRANSFER_CHECK (*ta);
1394 assert (ta->next->flags & CF_READY); 1726
1395 ta->next->flags &= ~CF_READY;
1396 SvRV_set (coro_current, next_sv); 1727 SvRV_set (coro_current, (SV *)next->hv);
1397 1728
1398 LOCK;
1399 free_coro_mortal (aTHX); 1729 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv; 1730 coro_mortal = prev_sv;
1401 UNLOCK;
1402} 1731}
1403 1732
1404static void 1733static void
1734prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1735{
1736 for (;;)
1737 {
1738 struct coro *next = coro_deq (aTHX);
1739
1740 if (expect_true (next))
1741 {
1742 /* cannot transfer to destroyed coros, skip and look for next */
1743 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1744 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1745 else
1746 {
1747 next->flags &= ~CF_READY;
1748 --coro_nready;
1749
1750 prepare_schedule_to (aTHX_ ta, next);
1751 break;
1752 }
1753 }
1754 else
1755 {
1756 /* nothing to schedule: call the idle handler */
1757 if (SvROK (sv_idle)
1758 && SvOBJECT (SvRV (sv_idle)))
1759 {
1760 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1761 api_ready (aTHX_ SvRV (sv_idle));
1762 --coro_nready;
1763 }
1764 else
1765 {
1766 dSP;
1767
1768 ENTER;
1769 SAVETMPS;
1770
1771 PUSHMARK (SP);
1772 PUTBACK;
1773 call_sv (sv_idle, G_VOID | G_DISCARD);
1774
1775 FREETMPS;
1776 LEAVE;
1777 }
1778 }
1779 }
1780}
1781
1782INLINE void
1405prepare_cede (pTHX_ struct transfer_args *ta) 1783prepare_cede (pTHX_ struct coro_transfer_args *ta)
1406{ 1784{
1407 api_ready (coro_current); 1785 api_ready (aTHX_ coro_current);
1408 prepare_schedule (aTHX_ ta); 1786 prepare_schedule (aTHX_ ta);
1409} 1787}
1410 1788
1789INLINE void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{
1792 SV *prev = SvRV (coro_current);
1793
1794 if (coro_nready)
1795 {
1796 prepare_schedule (aTHX_ ta);
1797 api_ready (aTHX_ prev);
1798 }
1799 else
1800 prepare_nop (aTHX_ ta);
1801}
1802
1803static void
1804api_schedule (pTHX)
1805{
1806 struct coro_transfer_args ta;
1807
1808 prepare_schedule (aTHX_ &ta);
1809 TRANSFER (ta, 1);
1810}
1811
1812static void
1813api_schedule_to (pTHX_ SV *coro_sv)
1814{
1815 struct coro_transfer_args ta;
1816 struct coro *next = SvSTATE (coro_sv);
1817
1818 SvREFCNT_inc_NN (coro_sv);
1819 prepare_schedule_to (aTHX_ &ta, next);
1820}
1821
1411static int 1822static int
1412prepare_cede_notself (pTHX_ struct transfer_args *ta) 1823api_cede (pTHX)
1413{ 1824{
1414 if (coro_nready) 1825 struct coro_transfer_args ta;
1415 { 1826
1416 SV *prev = SvRV (coro_current);
1417 prepare_schedule (aTHX_ ta); 1827 prepare_cede (aTHX_ &ta);
1418 api_ready (prev); 1828
1829 if (expect_true (ta.prev != ta.next))
1830 {
1831 TRANSFER (ta, 1);
1419 return 1; 1832 return 1;
1420 } 1833 }
1421 else 1834 else
1422 return 0; 1835 return 0;
1423} 1836}
1424 1837
1425static void
1426api_schedule (void)
1427{
1428 dTHX;
1429 struct transfer_args ta;
1430
1431 prepare_schedule (aTHX_ &ta);
1432 TRANSFER (ta);
1433}
1434
1435static int 1838static int
1436api_cede (void) 1839api_cede_notself (pTHX)
1437{ 1840{
1438 dTHX; 1841 if (coro_nready)
1842 {
1439 struct transfer_args ta; 1843 struct coro_transfer_args ta;
1440 1844
1441 prepare_cede (aTHX_ &ta); 1845 prepare_cede_notself (aTHX_ &ta);
1442
1443 if (expect_true (ta.prev != ta.next))
1444 {
1445 TRANSFER (ta); 1846 TRANSFER (ta, 1);
1446 return 1; 1847 return 1;
1447 } 1848 }
1448 else 1849 else
1449 return 0; 1850 return 0;
1450} 1851}
1451 1852
1452static int 1853static void
1453api_cede_notself (void)
1454{
1455 dTHX;
1456 struct transfer_args ta;
1457
1458 if (prepare_cede_notself (aTHX_ &ta))
1459 {
1460 TRANSFER (ta);
1461 return 1;
1462 }
1463 else
1464 return 0;
1465}
1466
1467static void
1468api_trace (SV *coro_sv, int flags) 1854api_trace (pTHX_ SV *coro_sv, int flags)
1469{ 1855{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv); 1856 struct coro *coro = SvSTATE (coro_sv);
1472 1857
1858 if (coro->flags & CF_RUNNING)
1859 croak ("cannot enable tracing on a running coroutine, caught");
1860
1473 if (flags & CC_TRACE) 1861 if (flags & CC_TRACE)
1474 { 1862 {
1475 if (!coro->cctx) 1863 if (!coro->cctx)
1476 coro->cctx = cctx_new (); 1864 coro->cctx = cctx_new_run ();
1477 else if (!(coro->cctx->flags & CC_TRACE)) 1865 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack"); 1866 croak ("cannot enable tracing on coroutine with custom stack, caught");
1479 1867
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1868 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 } 1869 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1870 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 { 1871 {
… …
1488 else 1876 else
1489 coro->slot->runops = RUNOPS_DEFAULT; 1877 coro->slot->runops = RUNOPS_DEFAULT;
1490 } 1878 }
1491} 1879}
1492 1880
1881static void
1882coro_call_on_destroy (pTHX_ struct coro *coro)
1883{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886
1887 if (on_destroyp)
1888 {
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890
1891 while (AvFILLp (on_destroy) >= 0)
1892 {
1893 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP);
1897
1898 if (statusp)
1899 {
1900 int i;
1901 AV *status = (AV *)SvRV (*statusp);
1902 EXTEND (SP, AvFILLp (status) + 1);
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 }
1907
1908 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1910 }
1911 }
1912}
1913
1914static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1916{
1917 int i;
1918 HV *hv = (HV *)SvRV (coro_current);
1919 AV *av = newAV ();
1920
1921 /* items are actually not so common, so optimise for this case */
1922 if (items)
1923 {
1924 av_extend (av, items - 1);
1925
1926 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 }
1929
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1931
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager);
1934
1935 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat;
1937
1938 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/
1941}
1942
1943/*****************************************************************************/
1944/* async pool handler */
1945
1946static int
1947slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1948{
1949 HV *hv = (HV *)SvRV (coro_current);
1950 struct coro *coro = (struct coro *)frame->data;
1951
1952 if (!coro->invoke_cb)
1953 return 1; /* loop till we have invoke */
1954 else
1955 {
1956 hv_store (hv, "desc", sizeof ("desc") - 1,
1957 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1958
1959 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1960
1961 {
1962 dSP;
1963 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1964 PUTBACK;
1965 }
1966
1967 SvREFCNT_dec (GvAV (PL_defgv));
1968 GvAV (PL_defgv) = coro->invoke_av;
1969 coro->invoke_av = 0;
1970
1971 return 0;
1972 }
1973}
1974
1975static void
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{
1978 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980
1981 if (expect_true (coro->saved_deffh))
1982 {
1983 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0;
1986
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1991 coro->invoke_av = newAV ();
1992
1993 frame->prepare = prepare_nop;
1994 }
1995 else
1996 {
1997 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999
2000 coro->prio = 0;
2001
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0);
2004
2005 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 }
2008 }
2009 else
2010 {
2011 /* first iteration, simply fall through */
2012 frame->prepare = prepare_nop;
2013 }
2014
2015 frame->check = slf_check_pool_handler;
2016 frame->data = (void *)coro;
2017}
2018
2019/*****************************************************************************/
2020/* rouse callback */
2021
2022#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2023
2024static void
2025coro_rouse_callback (pTHX_ CV *cv)
2026{
2027 dXSARGS;
2028 SV *data = (SV *)S_GENSUB_ARG;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 {
2032 /* first call, set args */
2033 SV *coro = SvRV (data);
2034 AV *av = newAV ();
2035
2036 SvRV_set (data, (SV *)av);
2037
2038 /* better take a full copy of the arguments */
2039 while (items--)
2040 av_store (av, items, newSVsv (ST (items)));
2041
2042 api_ready (aTHX_ coro);
2043 SvREFCNT_dec (coro);
2044 }
2045
2046 XSRETURN_EMPTY;
2047}
2048
2049static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{
2052 SV *data = (SV *)frame->data;
2053
2054 if (CORO_THROW)
2055 return 0;
2056
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1;
2059
2060 /* now push all results on the stack */
2061 {
2062 dSP;
2063 AV *av = (AV *)SvRV (data);
2064 int i;
2065
2066 EXTEND (SP, AvFILLp (av) + 1);
2067 for (i = 0; i <= AvFILLp (av); ++i)
2068 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2069
2070 /* we have stolen the elements, so set length to zero and free */
2071 AvFILLp (av) = -1;
2072 av_undef (av);
2073
2074 PUTBACK;
2075 }
2076
2077 return 0;
2078}
2079
2080static void
2081slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2082{
2083 SV *cb;
2084
2085 if (items)
2086 cb = arg [0];
2087 else
2088 {
2089 struct coro *coro = SvSTATE_current;
2090
2091 if (!coro->rouse_cb)
2092 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2093
2094 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0;
2096 }
2097
2098 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,");
2102
2103 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2105 SV *data = (SV *)S_GENSUB_ARG;
2106
2107 frame->data = (void *)data;
2108 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2109 frame->check = slf_check_rouse_wait;
2110 }
2111}
2112
2113static SV *
2114coro_new_rouse_cb (pTHX)
2115{
2116 HV *hv = (HV *)SvRV (coro_current);
2117 struct coro *coro = SvSTATE_hv (hv);
2118 SV *data = newRV_inc ((SV *)hv);
2119 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2120
2121 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2122 SvREFCNT_dec (data); /* magicext increases the refcount */
2123
2124 SvREFCNT_dec (coro->rouse_cb);
2125 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2126
2127 return cb;
2128}
2129
2130/*****************************************************************************/
2131/* schedule-like-function opcode (SLF) */
2132
2133static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2134static const CV *slf_cv;
2135static SV **slf_argv;
2136static int slf_argc, slf_arga; /* count, allocated */
2137static I32 slf_ax; /* top of stack, for restore */
2138
2139/* this restores the stack in the case we patched the entersub, to */
2140/* recreate the stack frame as perl will on following calls */
2141/* since entersub cleared the stack */
2142static OP *
2143pp_restore (pTHX)
2144{
2145 int i;
2146 SV **SP = PL_stack_base + slf_ax;
2147
2148 PUSHMARK (SP);
2149
2150 EXTEND (SP, slf_argc + 1);
2151
2152 for (i = 0; i < slf_argc; ++i)
2153 PUSHs (sv_2mortal (slf_argv [i]));
2154
2155 PUSHs ((SV *)CvGV (slf_cv));
2156
2157 RETURNOP (slf_restore.op_first);
2158}
2159
2160static void
2161slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2162{
2163 SV **arg = (SV **)slf_frame.data;
2164
2165 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2166}
2167
2168static void
2169slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (items != 2)
2172 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2173
2174 frame->prepare = slf_prepare_transfer;
2175 frame->check = slf_check_nop;
2176 frame->data = (void *)arg; /* let's hope it will stay valid */
2177}
2178
2179static void
2180slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 frame->prepare = prepare_schedule;
2183 frame->check = slf_check_nop;
2184}
2185
2186static void
2187slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2188{
2189 struct coro *next = (struct coro *)slf_frame.data;
2190
2191 SvREFCNT_inc_NN (next->hv);
2192 prepare_schedule_to (aTHX_ ta, next);
2193}
2194
2195static void
2196slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 if (!items)
2199 croak ("Coro::schedule_to expects a coroutine argument, caught");
2200
2201 frame->data = (void *)SvSTATE (arg [0]);
2202 frame->prepare = slf_prepare_schedule_to;
2203 frame->check = slf_check_nop;
2204}
2205
2206static void
2207slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2208{
2209 api_ready (aTHX_ SvRV (coro_current));
2210
2211 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2212}
2213
2214static void
2215slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 frame->prepare = prepare_cede;
2218 frame->check = slf_check_nop;
2219}
2220
2221static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop;
2226}
2227
2228/*
2229 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same
2231 * stack offset
2232 * SLF stands for "schedule-like-function".
2233 */
2234static OP *
2235pp_slf (pTHX)
2236{
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238
2239 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare))
2243 {
2244 /* first iteration */
2245 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */
2248 SV *gv = *sp;
2249
2250 /* do a quick consistency check on the "function" object, and if it isn't */
2251 /* for us, divert to the real entersub */
2252 if (SvTYPE (gv) != SVt_PVGV
2253 || !GvCV (gv)
2254 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2255 return PL_ppaddr[OP_ENTERSUB](aTHX);
2256
2257 if (!(PL_op->op_flags & OPf_STACKED))
2258 {
2259 /* ampersand-form of call, use @_ instead of stack */
2260 AV *av = GvAV (PL_defgv);
2261 arg = AvARRAY (av);
2262 items = AvFILLp (av) + 1;
2263 }
2264
2265 /* now call the init function, which needs to set up slf_frame */
2266 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2267 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2268
2269 /* pop args */
2270 SP = PL_stack_base + POPMARK;
2271
2272 PUTBACK;
2273 }
2274
2275 /* now that we have a slf_frame, interpret it! */
2276 /* we use a callback system not to make the code needlessly */
2277 /* complicated, but so we can run multiple perl coros from one cctx */
2278
2279 do
2280 {
2281 struct coro_transfer_args ta;
2282
2283 slf_frame.prepare (aTHX_ &ta);
2284 TRANSFER (ta, 0);
2285
2286 checkmark = PL_stack_sp - PL_stack_base;
2287 }
2288 while (slf_frame.check (aTHX_ &slf_frame));
2289
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291
2292 /* exception handling */
2293 if (expect_false (CORO_THROW))
2294 {
2295 SV *exception = sv_2mortal (CORO_THROW);
2296
2297 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception);
2299 croak (0);
2300 }
2301
2302 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR)
2305 {
2306 dSP;
2307 SV **bot = PL_stack_base + checkmark;
2308
2309 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */
2312 bot [1] = *sp;
2313
2314 SP = bot + 1;
2315
2316 PUTBACK;
2317 }
2318
2319 return NORMAL;
2320}
2321
2322static void
2323api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2324{
2325 int i;
2326 SV **arg = PL_stack_base + ax;
2327 int items = PL_stack_sp - arg + 1;
2328
2329 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2330
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334
2335 CvFLAGS (cv) |= CVf_SLF;
2336 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2337 slf_cv = cv;
2338
2339 /* we patch the op, and then re-run the whole call */
2340 /* we have to put the same argument on the stack for this to work */
2341 /* and this will be done by pp_restore */
2342 slf_restore.op_next = (OP *)&slf_restore;
2343 slf_restore.op_type = OP_CUSTOM;
2344 slf_restore.op_ppaddr = pp_restore;
2345 slf_restore.op_first = PL_op;
2346
2347 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2348
2349 if (PL_op->op_flags & OPf_STACKED)
2350 {
2351 if (items > slf_arga)
2352 {
2353 slf_arga = items;
2354 free (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *));
2356 }
2357
2358 slf_argc = items;
2359
2360 for (i = 0; i < items; ++i)
2361 slf_argv [i] = SvREFCNT_inc (arg [i]);
2362 }
2363 else
2364 slf_argc = 0;
2365
2366 PL_op->op_ppaddr = pp_slf;
2367 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2368
2369 PL_op = (OP *)&slf_restore;
2370}
2371
2372/*****************************************************************************/
2373/* dynamic wind */
2374
2375static void
2376on_enterleave_call (pTHX_ SV *cb)
2377{
2378 dSP;
2379
2380 PUSHSTACK;
2381
2382 PUSHMARK (SP);
2383 PUTBACK;
2384 call_sv (cb, G_VOID | G_DISCARD);
2385 SPAGAIN;
2386
2387 POPSTACK;
2388}
2389
2390static SV *
2391coro_avp_pop_and_free (pTHX_ AV **avp)
2392{
2393 AV *av = *avp;
2394 SV *res = av_pop (av);
2395
2396 if (AvFILLp (av) < 0)
2397 {
2398 *avp = 0;
2399 SvREFCNT_dec (av);
2400 }
2401
2402 return res;
2403}
2404
2405static void
2406coro_pop_on_enter (pTHX_ void *coro)
2407{
2408 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2409 SvREFCNT_dec (cb);
2410}
2411
2412static void
2413coro_pop_on_leave (pTHX_ void *coro)
2414{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417}
2418
2419/*****************************************************************************/
2420/* PerlIO::cede */
2421
2422typedef struct
2423{
2424 PerlIOBuf base;
2425 NV next, every;
2426} PerlIOCede;
2427
2428static IV
2429PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2430{
2431 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2432
2433 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2434 self->next = nvtime () + self->every;
2435
2436 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2437}
2438
2439static SV *
2440PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2441{
2442 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2443
2444 return newSVnv (self->every);
2445}
2446
2447static IV
2448PerlIOCede_flush (pTHX_ PerlIO *f)
2449{
2450 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2451 double now = nvtime ();
2452
2453 if (now >= self->next)
2454 {
2455 api_cede (aTHX);
2456 self->next = now + self->every;
2457 }
2458
2459 return PerlIOBuf_flush (aTHX_ f);
2460}
2461
2462static PerlIO_funcs PerlIO_cede =
2463{
2464 sizeof(PerlIO_funcs),
2465 "cede",
2466 sizeof(PerlIOCede),
2467 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2468 PerlIOCede_pushed,
2469 PerlIOBuf_popped,
2470 PerlIOBuf_open,
2471 PerlIOBase_binmode,
2472 PerlIOCede_getarg,
2473 PerlIOBase_fileno,
2474 PerlIOBuf_dup,
2475 PerlIOBuf_read,
2476 PerlIOBuf_unread,
2477 PerlIOBuf_write,
2478 PerlIOBuf_seek,
2479 PerlIOBuf_tell,
2480 PerlIOBuf_close,
2481 PerlIOCede_flush,
2482 PerlIOBuf_fill,
2483 PerlIOBase_eof,
2484 PerlIOBase_error,
2485 PerlIOBase_clearerr,
2486 PerlIOBase_setlinebuf,
2487 PerlIOBuf_get_base,
2488 PerlIOBuf_bufsiz,
2489 PerlIOBuf_get_ptr,
2490 PerlIOBuf_get_cnt,
2491 PerlIOBuf_set_ptrcnt,
2492};
2493
2494/*****************************************************************************/
2495/* Coro::Semaphore & Coro::Signal */
2496
2497static SV *
2498coro_waitarray_new (pTHX_ int count)
2499{
2500 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2501 AV *av = newAV ();
2502 SV **ary;
2503
2504 /* unfortunately, building manually saves memory */
2505 Newx (ary, 2, SV *);
2506 AvALLOC (av) = ary;
2507#if PERL_VERSION_ATLEAST (5,10,0)
2508 AvARRAY (av) = ary;
2509#else
2510 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2511 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2512 SvPVX ((SV *)av) = (char *)ary;
2513#endif
2514 AvMAX (av) = 1;
2515 AvFILLp (av) = 0;
2516 ary [0] = newSViv (count);
2517
2518 return newRV_noinc ((SV *)av);
2519}
2520
2521/* semaphore */
2522
2523static void
2524coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2525{
2526 SV *count_sv = AvARRAY (av)[0];
2527 IV count = SvIVX (count_sv);
2528
2529 count += adjust;
2530 SvIVX (count_sv) = count;
2531
2532 /* now wake up as many waiters as are expected to lock */
2533 while (count > 0 && AvFILLp (av) > 0)
2534 {
2535 SV *cb;
2536
2537 /* swap first two elements so we can shift a waiter */
2538 AvARRAY (av)[0] = AvARRAY (av)[1];
2539 AvARRAY (av)[1] = count_sv;
2540 cb = av_shift (av);
2541
2542 if (SvOBJECT (cb))
2543 {
2544 api_ready (aTHX_ cb);
2545 --count;
2546 }
2547 else if (SvTYPE (cb) == SVt_PVCV)
2548 {
2549 dSP;
2550 PUSHMARK (SP);
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2552 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 }
2555
2556 SvREFCNT_dec (cb);
2557 }
2558}
2559
2560static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2562{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2565}
2566
2567static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{
2570 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0];
2572
2573 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW)
2575 return 0;
2576 else if (SvIVX (count_sv) > 0)
2577 {
2578 SvSTATE_current->on_destroy = 0;
2579
2580 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else
2583 coro_semaphore_adjust (aTHX_ av, 0);
2584
2585 return 0;
2586 }
2587 else
2588 {
2589 int i;
2590 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */
2593
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current))
2596 return 1;
2597
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2599 return 1;
2600 }
2601}
2602
2603static int
2604slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2607}
2608
2609static int
2610slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2611{
2612 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2613}
2614
2615static void
2616slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2617{
2618 AV *av = (AV *)SvRV (arg [0]);
2619
2620 if (SvIVX (AvARRAY (av)[0]) > 0)
2621 {
2622 frame->data = (void *)av;
2623 frame->prepare = prepare_nop;
2624 }
2625 else
2626 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2635 }
2636}
2637
2638static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2640{
2641 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2642 frame->check = slf_check_semaphore_down;
2643}
2644
2645static void
2646slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2647{
2648 if (items >= 2)
2649 {
2650 /* callback form */
2651 AV *av = (AV *)SvRV (arg [0]);
2652 SV *cb_cv = s_get_cv_croak (arg [1]);
2653
2654 av_push (av, SvREFCNT_inc_NN (cb_cv));
2655
2656 if (SvIVX (AvARRAY (av)[0]) > 0)
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 frame->prepare = prepare_nop;
2660 frame->check = slf_check_nop;
2661 }
2662 else
2663 {
2664 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2665 frame->check = slf_check_semaphore_wait;
2666 }
2667}
2668
2669/* signal */
2670
2671static void
2672coro_signal_wake (pTHX_ AV *av, int count)
2673{
2674 SvIVX (AvARRAY (av)[0]) = 0;
2675
2676 /* now signal count waiters */
2677 while (count > 0 && AvFILLp (av) > 0)
2678 {
2679 SV *cb;
2680
2681 /* swap first two elements so we can shift a waiter */
2682 cb = AvARRAY (av)[0];
2683 AvARRAY (av)[0] = AvARRAY (av)[1];
2684 AvARRAY (av)[1] = cb;
2685
2686 cb = av_shift (av);
2687
2688 if (SvTYPE (cb) == SVt_PVCV)
2689 {
2690 dSP;
2691 PUSHMARK (SP);
2692 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2693 PUTBACK;
2694 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2695 }
2696 else
2697 {
2698 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */
2700 }
2701
2702 SvREFCNT_dec (cb);
2703
2704 --count;
2705 }
2706}
2707
2708static int
2709slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2710{
2711 /* if we are about to throw, also stop waiting */
2712 return SvROK ((SV *)frame->data) && !CORO_THROW;
2713}
2714
2715static void
2716slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2717{
2718 AV *av = (AV *)SvRV (arg [0]);
2719
2720 if (items >= 2)
2721 {
2722 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else if (SvIVX (AvARRAY (av)[0]))
2732 {
2733 SvIVX (AvARRAY (av)[0]) = 0;
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2740
2741 av_push (av, waiter);
2742
2743 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2744 frame->prepare = prepare_schedule;
2745 frame->check = slf_check_signal_wait;
2746 }
2747}
2748
2749/*****************************************************************************/
2750/* Coro::AIO */
2751
2752#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2753
2754/* helper storage struct */
2755struct io_state
2756{
2757 int errorno;
2758 I32 laststype; /* U16 in 5.10.0 */
2759 int laststatval;
2760 Stat_t statcache;
2761};
2762
2763static void
2764coro_aio_callback (pTHX_ CV *cv)
2765{
2766 dXSARGS;
2767 AV *state = (AV *)S_GENSUB_ARG;
2768 SV *coro = av_pop (state);
2769 SV *data_sv = newSV (sizeof (struct io_state));
2770
2771 av_extend (state, items - 1);
2772
2773 sv_upgrade (data_sv, SVt_PV);
2774 SvCUR_set (data_sv, sizeof (struct io_state));
2775 SvPOK_only (data_sv);
2776
2777 {
2778 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2779
2780 data->errorno = errno;
2781 data->laststype = PL_laststype;
2782 data->laststatval = PL_laststatval;
2783 data->statcache = PL_statcache;
2784 }
2785
2786 /* now build the result vector out of all the parameters and the data_sv */
2787 {
2788 int i;
2789
2790 for (i = 0; i < items; ++i)
2791 av_push (state, SvREFCNT_inc_NN (ST (i)));
2792 }
2793
2794 av_push (state, data_sv);
2795
2796 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro);
2798 SvREFCNT_dec ((AV *)state);
2799}
2800
2801static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{
2804 AV *state = (AV *)frame->data;
2805
2806 /* if we are about to throw, return early */
2807 /* this does not cancel the aio request, but at least */
2808 /* it quickly returns */
2809 if (CORO_THROW)
2810 return 0;
2811
2812 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2814 return 1;
2815
2816 /* restore status */
2817 {
2818 SV *data_sv = av_pop (state);
2819 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2820
2821 errno = data->errorno;
2822 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache;
2825
2826 SvREFCNT_dec (data_sv);
2827 }
2828
2829 /* push result values */
2830 {
2831 dSP;
2832 int i;
2833
2834 EXTEND (SP, AvFILLp (state) + 1);
2835 for (i = 0; i <= AvFILLp (state); ++i)
2836 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2837
2838 PUTBACK;
2839 }
2840
2841 return 0;
2842}
2843
2844static void
2845slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2846{
2847 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2848 SV *coro_hv = SvRV (coro_current);
2849 struct coro *coro = SvSTATE_hv (coro_hv);
2850
2851 /* put our coroutine id on the state arg */
2852 av_push (state, SvREFCNT_inc_NN (coro_hv));
2853
2854 /* first see whether we have a non-zero priority and set it as AIO prio */
2855 if (coro->prio)
2856 {
2857 dSP;
2858
2859 static SV *prio_cv;
2860 static SV *prio_sv;
2861
2862 if (expect_false (!prio_cv))
2863 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0);
2866 }
2867
2868 PUSHMARK (SP);
2869 sv_setiv (prio_sv, coro->prio);
2870 XPUSHs (prio_sv);
2871
2872 PUTBACK;
2873 call_sv (prio_cv, G_VOID | G_DISCARD);
2874 }
2875
2876 /* now call the original request */
2877 {
2878 dSP;
2879 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2880 int i;
2881
2882 PUSHMARK (SP);
2883
2884 /* first push all args to the stack */
2885 EXTEND (SP, items + 1);
2886
2887 for (i = 0; i < items; ++i)
2888 PUSHs (arg [i]);
2889
2890 /* now push the callback closure */
2891 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2892
2893 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 }
2897
2898 /* now that the requets is going, we loop toll we have a result */
2899 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req;
2902}
2903
2904static void
2905coro_aio_req_xs (pTHX_ CV *cv)
2906{
2907 dXSARGS;
2908
2909 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2910
2911 XSRETURN_EMPTY;
2912}
2913
2914/*****************************************************************************/
2915
2916#if CORO_CLONE
2917# include "clone.c"
2918#endif
2919
2920/*****************************************************************************/
2921
2922static SV *
2923coro_new (HV *stash, SV **argv, int argc, int is_coro)
2924{
2925 SV *coro_sv;
2926 struct coro *coro;
2927 MAGIC *mg;
2928 HV *hv;
2929 SV *cb;
2930 int i;
2931
2932 if (argc > 0)
2933 {
2934 cb = s_get_cv_croak (argv [0]);
2935
2936 if (!is_coro)
2937 {
2938 if (CvISXSUB (cb))
2939 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2940
2941 if (!CvROOT (cb))
2942 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2943 }
2944 }
2945
2946 Newz (0, coro, 1, struct coro);
2947 coro->args = newAV ();
2948 coro->flags = CF_NEW;
2949
2950 if (coro_first) coro_first->prev = coro;
2951 coro->next = coro_first;
2952 coro_first = coro;
2953
2954 coro->hv = hv = newHV ();
2955 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2956 mg->mg_flags |= MGf_DUP;
2957 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
2958
2959 if (argc > 0)
2960 {
2961 av_extend (coro->args, argc + is_coro - 1);
2962
2963 if (is_coro)
2964 {
2965 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2966 cb = (SV *)cv_coro_run;
2967 }
2968
2969 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2970
2971 for (i = 1; i < argc; i++)
2972 av_push (coro->args, newSVsv (argv [i]));
2973 }
2974
2975 return coro_sv;
2976}
2977
1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2978MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494 2979
1495PROTOTYPES: DISABLE 2980PROTOTYPES: DISABLE
1496 2981
1497BOOT: 2982BOOT:
1498{ 2983{
1499#ifdef USE_ITHREADS 2984#ifdef USE_ITHREADS
1500 MUTEX_INIT (&coro_mutex); 2985# if CORO_PTHREAD
2986 coro_thx = PERL_GET_CONTEXT;
2987# endif
1501#endif 2988#endif
1502 BOOT_PAGESIZE; 2989 BOOT_PAGESIZE;
1503 2990
2991 cctx_current = cctx_new_empty ();
2992
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2993 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2994 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506 2995
2996 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2997 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2998 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2999
1507 hv_sig = coro_get_hv ("SIG", TRUE); 3000 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 3001 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 3002 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1510
1511 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513 3003
1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3004 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515 3005
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3006 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3007 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1522 main_top_env = PL_top_env; 3012 main_top_env = PL_top_env;
1523 3013
1524 while (main_top_env->je_prev) 3014 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev; 3015 main_top_env = main_top_env->je_prev;
1526 3016
3017 {
3018 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3019
3020 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3021 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3022
3023 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3024 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3025 }
3026
1527 coroapi.ver = CORO_API_VERSION; 3027 coroapi.ver = CORO_API_VERSION;
3028 coroapi.rev = CORO_API_REVISION;
3029
1528 coroapi.transfer = api_transfer; 3030 coroapi.transfer = api_transfer;
1529 3031
3032 coroapi.sv_state = SvSTATE_;
3033 coroapi.execute_slf = api_execute_slf;
3034 coroapi.prepare_nop = prepare_nop;
3035 coroapi.prepare_schedule = prepare_schedule;
3036 coroapi.prepare_cede = prepare_cede;
3037 coroapi.prepare_cede_notself = prepare_cede_notself;
3038
3039 {
3040 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3041
3042 if (!svp) croak ("Time::HiRes is required");
3043 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3044
3045 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3046
3047 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3048 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
3049 }
3050
1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3051 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1531} 3052}
1532 3053
1533SV * 3054SV *
1534new (char *klass, ...) 3055new (SV *klass, ...)
3056 ALIAS:
3057 Coro::new = 1
1535 CODE: 3058 CODE:
1536{ 3059 RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1537 struct coro *coro; 3060 OUTPUT:
1538 HV *hv;
1539 int i;
1540
1541 Newz (0, coro, 1, struct coro);
1542 coro->args = newAV ();
1543 coro->flags = CF_NEW;
1544
1545 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first;
1547 coro_first = coro;
1548
1549 coro->hv = hv = newHV ();
1550 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552
1553 av_extend (coro->args, items - 1);
1554 for (i = 1; i < items; i++)
1555 av_push (coro->args, newSVsv (ST (i)));
1556}
1557 OUTPUT:
1558 RETVAL 3061 RETVAL
1559 3062
1560# these not obviously related functions are all rolled into the same xs
1561# function to increase chances that they all will call transfer with the same
1562# stack offset
1563void 3063void
1564_set_stacklevel (...) 3064transfer (...)
1565 ALIAS: 3065 PROTOTYPE: $$
1566 Coro::State::transfer = 1 3066 CODE:
1567 Coro::schedule = 2 3067 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1568 Coro::cede = 3
1569 Coro::cede_notself = 4
1570 CODE:
1571{
1572 struct transfer_args ta;
1573
1574 switch (ix)
1575 {
1576 case 0:
1577 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1578 ta.next = 0;
1579 break;
1580
1581 case 1:
1582 if (items != 2)
1583 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1584
1585 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1586 break;
1587
1588 case 2:
1589 prepare_schedule (aTHX_ &ta);
1590 break;
1591
1592 case 3:
1593 prepare_cede (aTHX_ &ta);
1594 break;
1595
1596 case 4:
1597 if (!prepare_cede_notself (aTHX_ &ta))
1598 XSRETURN_EMPTY;
1599
1600 break;
1601 }
1602
1603 BARRIER;
1604 TRANSFER (ta);
1605
1606 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1607 XSRETURN_YES;
1608}
1609 3068
1610bool 3069bool
1611_destroy (SV *coro_sv) 3070_destroy (SV *coro_sv)
1612 CODE: 3071 CODE:
1613 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3072 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1614 OUTPUT: 3073 OUTPUT:
1615 RETVAL 3074 RETVAL
1616 3075
1617void 3076void
1618_exit (code) 3077_exit (int code)
1619 int code
1620 PROTOTYPE: $ 3078 PROTOTYPE: $
1621 CODE: 3079 CODE:
1622 _exit (code); 3080 _exit (code);
1623 3081
3082SV *
3083clone (Coro::State coro)
3084 CODE:
3085{
3086#if CORO_CLONE
3087 struct coro *ncoro = coro_clone (aTHX_ coro);
3088 MAGIC *mg;
3089 /* TODO: too much duplication */
3090 ncoro->hv = newHV ();
3091 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3092 mg->mg_flags |= MGf_DUP;
3093 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3094#else
3095 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3096#endif
3097}
3098 OUTPUT:
3099 RETVAL
3100
1624int 3101int
1625cctx_stacksize (int new_stacksize = 0) 3102cctx_stacksize (int new_stacksize = 0)
3103 PROTOTYPE: ;$
1626 CODE: 3104 CODE:
1627 RETVAL = coro_stacksize; 3105 RETVAL = cctx_stacksize;
1628 if (new_stacksize) 3106 if (new_stacksize)
3107 {
1629 coro_stacksize = new_stacksize; 3108 cctx_stacksize = new_stacksize;
3109 ++cctx_gen;
3110 }
1630 OUTPUT: 3111 OUTPUT:
1631 RETVAL 3112 RETVAL
1632 3113
1633int 3114int
3115cctx_max_idle (int max_idle = 0)
3116 PROTOTYPE: ;$
3117 CODE:
3118 RETVAL = cctx_max_idle;
3119 if (max_idle > 1)
3120 cctx_max_idle = max_idle;
3121 OUTPUT:
3122 RETVAL
3123
3124int
1634cctx_count () 3125cctx_count ()
3126 PROTOTYPE:
1635 CODE: 3127 CODE:
1636 RETVAL = cctx_count; 3128 RETVAL = cctx_count;
1637 OUTPUT: 3129 OUTPUT:
1638 RETVAL 3130 RETVAL
1639 3131
1640int 3132int
1641cctx_idle () 3133cctx_idle ()
3134 PROTOTYPE:
1642 CODE: 3135 CODE:
1643 RETVAL = cctx_idle; 3136 RETVAL = cctx_idle;
1644 OUTPUT: 3137 OUTPUT:
1645 RETVAL 3138 RETVAL
1646 3139
1647void 3140void
1648list () 3141list ()
3142 PROTOTYPE:
1649 PPCODE: 3143 PPCODE:
1650{ 3144{
1651 struct coro *coro; 3145 struct coro *coro;
1652 for (coro = coro_first; coro; coro = coro->next) 3146 for (coro = coro_first; coro; coro = coro->next)
1653 if (coro->hv) 3147 if (coro->hv)
… …
1658call (Coro::State coro, SV *coderef) 3152call (Coro::State coro, SV *coderef)
1659 ALIAS: 3153 ALIAS:
1660 eval = 1 3154 eval = 1
1661 CODE: 3155 CODE:
1662{ 3156{
1663 if (coro->mainstack) 3157 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1664 { 3158 {
1665 struct coro temp; 3159 struct coro *current = SvSTATE_current;
1666 3160
1667 if (!(coro->flags & CF_RUNNING)) 3161 if (current != coro)
1668 { 3162 {
3163 PUTBACK;
1669 save_perl (aTHX_ &temp); 3164 save_perl (aTHX_ current);
1670 load_perl (aTHX_ coro); 3165 load_perl (aTHX_ coro);
3166 SPAGAIN;
1671 } 3167 }
1672 3168
1673 { 3169 PUSHSTACK;
1674 dSP; 3170
1675 ENTER;
1676 SAVETMPS;
1677 PUSHMARK (SP); 3171 PUSHMARK (SP);
1678 PUTBACK; 3172 PUTBACK;
1679 3173
1680 if (ix) 3174 if (ix)
1681 eval_sv (coderef, 0); 3175 eval_sv (coderef, 0);
1682 else 3176 else
1683 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3177 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1684 3178
3179 POPSTACK;
1685 SPAGAIN; 3180 SPAGAIN;
1686 FREETMPS;
1687 LEAVE;
1688 PUTBACK;
1689 }
1690 3181
1691 if (!(coro->flags & CF_RUNNING)) 3182 if (current != coro)
1692 { 3183 {
3184 PUTBACK;
1693 save_perl (aTHX_ coro); 3185 save_perl (aTHX_ coro);
1694 load_perl (aTHX_ &temp); 3186 load_perl (aTHX_ current);
3187 SPAGAIN;
1695 } 3188 }
1696 } 3189 }
1697} 3190}
1698 3191
1699SV * 3192SV *
… …
1702 ALIAS: 3195 ALIAS:
1703 is_ready = CF_READY 3196 is_ready = CF_READY
1704 is_running = CF_RUNNING 3197 is_running = CF_RUNNING
1705 is_new = CF_NEW 3198 is_new = CF_NEW
1706 is_destroyed = CF_DESTROYED 3199 is_destroyed = CF_DESTROYED
3200 is_suspended = CF_SUSPENDED
1707 CODE: 3201 CODE:
1708 RETVAL = boolSV (coro->flags & ix); 3202 RETVAL = boolSV (coro->flags & ix);
1709 OUTPUT: 3203 OUTPUT:
1710 RETVAL 3204 RETVAL
1711 3205
1712void 3206void
3207throw (Coro::State self, SV *throw = &PL_sv_undef)
3208 PROTOTYPE: $;$
3209 CODE:
3210{
3211 struct coro *current = SvSTATE_current;
3212 SV **throwp = self == current ? &CORO_THROW : &self->except;
3213 SvREFCNT_dec (*throwp);
3214 SvGETMAGIC (throw);
3215 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3216}
3217
3218void
1713api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3219api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3220 PROTOTYPE: $;$
3221 C_ARGS: aTHX_ coro, flags
1714 3222
1715SV * 3223SV *
1716has_stack (Coro::State coro) 3224has_cctx (Coro::State coro)
1717 PROTOTYPE: $ 3225 PROTOTYPE: $
1718 CODE: 3226 CODE:
1719 RETVAL = boolSV (!!coro->cctx); 3227 /* maybe manage the running flag differently */
3228 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1720 OUTPUT: 3229 OUTPUT:
1721 RETVAL 3230 RETVAL
1722 3231
1723int 3232int
1724is_traced (Coro::State coro) 3233is_traced (Coro::State coro)
… …
1726 CODE: 3235 CODE:
1727 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3236 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1728 OUTPUT: 3237 OUTPUT:
1729 RETVAL 3238 RETVAL
1730 3239
1731IV 3240UV
1732rss (Coro::State coro) 3241rss (Coro::State coro)
1733 PROTOTYPE: $ 3242 PROTOTYPE: $
1734 ALIAS: 3243 ALIAS:
1735 usecount = 1 3244 usecount = 1
1736 CODE: 3245 CODE:
… …
1740 case 1: RETVAL = coro->usecount; break; 3249 case 1: RETVAL = coro->usecount; break;
1741 } 3250 }
1742 OUTPUT: 3251 OUTPUT:
1743 RETVAL 3252 RETVAL
1744 3253
3254void
3255force_cctx ()
3256 PROTOTYPE:
3257 CODE:
3258 cctx_current->idle_sp = 0;
3259
3260void
3261swap_defsv (Coro::State self)
3262 PROTOTYPE: $
3263 ALIAS:
3264 swap_defav = 1
3265 CODE:
3266 if (!self->slot)
3267 croak ("cannot swap state with coroutine that has no saved state,");
3268 else
3269 {
3270 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3271 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3272
3273 SV *tmp = *src; *src = *dst; *dst = tmp;
3274 }
3275
3276void
3277cancel (Coro::State self)
3278 CODE:
3279 coro_state_destroy (aTHX_ self);
3280 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3281
3282
3283SV *
3284enable_times (int enabled = enable_times)
3285 CODE:
3286{
3287 RETVAL = boolSV (enable_times);
3288
3289 if (enabled != enable_times)
3290 {
3291 enable_times = enabled;
3292
3293 coro_times_update ();
3294 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3295 }
3296}
3297 OUTPUT:
3298 RETVAL
3299
3300void
3301times (Coro::State self)
3302 PPCODE:
3303{
3304 struct coro *current = SvSTATE (coro_current);
3305
3306 if (expect_false (current == self))
3307 {
3308 coro_times_update ();
3309 coro_times_add (SvSTATE (coro_current));
3310 }
3311
3312 EXTEND (SP, 2);
3313 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3314 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3315
3316 if (expect_false (current == self))
3317 coro_times_sub (SvSTATE (coro_current));
3318}
1745 3319
1746MODULE = Coro::State PACKAGE = Coro 3320MODULE = Coro::State PACKAGE = Coro
1747 3321
1748BOOT: 3322BOOT:
1749{ 3323{
1750 int i;
1751
1752 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3324 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1753 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3325 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3326 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3327 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3328 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1754 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3329 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3330 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3331 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3332 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1755 3333
1756 coro_current = coro_get_sv ("Coro::current", FALSE); 3334 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1757 SvREADONLY_on (coro_current); 3335 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3336 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3337 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1758 3338
1759 coro_stash = gv_stashpv ("Coro", TRUE); 3339 coro_stash = gv_stashpv ("Coro", TRUE);
1760 3340
1761 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3341 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1762 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3342 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1763 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3343 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1764 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3344 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1765 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3345 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1766 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3346 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1767
1768 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1769 coro_ready[i] = newAV ();
1770 3347
1771 { 3348 {
1772 SV *sv = perl_get_sv ("Coro::API", TRUE); 3349 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1773 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1774 3350
1775 coroapi.schedule = api_schedule; 3351 coroapi.schedule = api_schedule;
3352 coroapi.schedule_to = api_schedule_to;
1776 coroapi.cede = api_cede; 3353 coroapi.cede = api_cede;
1777 coroapi.cede_notself = api_cede_notself; 3354 coroapi.cede_notself = api_cede_notself;
1778 coroapi.ready = api_ready; 3355 coroapi.ready = api_ready;
1779 coroapi.is_ready = api_is_ready; 3356 coroapi.is_ready = api_is_ready;
1780 coroapi.nready = &coro_nready; 3357 coroapi.nready = coro_nready;
1781 coroapi.current = coro_current; 3358 coroapi.current = coro_current;
1782 3359
1783 GCoroAPI = &coroapi; 3360 /*GCoroAPI = &coroapi;*/
1784 sv_setiv (sv, (IV)&coroapi); 3361 sv_setiv (sv, (IV)&coroapi);
1785 SvREADONLY_on (sv); 3362 SvREADONLY_on (sv);
1786 } 3363 }
1787} 3364}
3365
3366SV *
3367async (...)
3368 PROTOTYPE: &@
3369 CODE:
3370 RETVAL = coro_new (coro_stash, &ST (0), items, 1);
3371 api_ready (RETVAL);
3372 OUTPUT:
3373 RETVAL
3374
3375void
3376terminate (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3379
3380void
3381schedule (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3384
3385void
3386schedule_to (...)
3387 CODE:
3388 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3389
3390void
3391cede_to (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3394
3395void
3396cede (...)
3397 CODE:
3398 CORO_EXECUTE_SLF_XS (slf_init_cede);
3399
3400void
3401cede_notself (...)
3402 CODE:
3403 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1788 3404
1789void 3405void
1790_set_current (SV *current) 3406_set_current (SV *current)
1791 PROTOTYPE: $ 3407 PROTOTYPE: $
1792 CODE: 3408 CODE:
1793 SvREFCNT_dec (SvRV (coro_current)); 3409 SvREFCNT_dec (SvRV (coro_current));
1794 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3410 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3411
3412void
3413_set_readyhook (SV *hook)
3414 PROTOTYPE: $
3415 CODE:
3416 SvREFCNT_dec (coro_readyhook);
3417 SvGETMAGIC (hook);
3418 if (SvOK (hook))
3419 {
3420 coro_readyhook = newSVsv (hook);
3421 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3422 }
3423 else
3424 {
3425 coro_readyhook = 0;
3426 CORO_READYHOOK = 0;
3427 }
1795 3428
1796int 3429int
1797prio (Coro::State coro, int newprio = 0) 3430prio (Coro::State coro, int newprio = 0)
3431 PROTOTYPE: $;$
1798 ALIAS: 3432 ALIAS:
1799 nice = 1 3433 nice = 1
1800 CODE: 3434 CODE:
1801{ 3435{
1802 RETVAL = coro->prio; 3436 RETVAL = coro->prio;
… …
1804 if (items > 1) 3438 if (items > 1)
1805 { 3439 {
1806 if (ix) 3440 if (ix)
1807 newprio = coro->prio - newprio; 3441 newprio = coro->prio - newprio;
1808 3442
1809 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3443 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1810 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3444 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1811 3445
1812 coro->prio = newprio; 3446 coro->prio = newprio;
1813 } 3447 }
1814} 3448}
1815 OUTPUT: 3449 OUTPUT:
… …
1817 3451
1818SV * 3452SV *
1819ready (SV *self) 3453ready (SV *self)
1820 PROTOTYPE: $ 3454 PROTOTYPE: $
1821 CODE: 3455 CODE:
1822 RETVAL = boolSV (api_ready (self)); 3456 RETVAL = boolSV (api_ready (aTHX_ self));
1823 OUTPUT: 3457 OUTPUT:
1824 RETVAL 3458 RETVAL
1825 3459
1826int 3460int
1827nready (...) 3461nready (...)
… …
1830 RETVAL = coro_nready; 3464 RETVAL = coro_nready;
1831 OUTPUT: 3465 OUTPUT:
1832 RETVAL 3466 RETVAL
1833 3467
1834void 3468void
1835throw (Coro::State self, SV *throw = &PL_sv_undef) 3469suspend (Coro::State self)
1836 PROTOTYPE: $;$ 3470 PROTOTYPE: $
1837 CODE: 3471 CODE:
1838 SvREFCNT_dec (self->throw); 3472 self->flags |= CF_SUSPENDED;
1839 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1840 3473
1841# for async_pool speedup
1842void 3474void
1843_pool_1 (SV *cb) 3475resume (Coro::State self)
3476 PROTOTYPE: $
1844 CODE: 3477 CODE:
1845{ 3478 self->flags &= ~CF_SUSPENDED;
1846 struct coro *coro = SvSTATE (coro_current);
1847 HV *hv = (HV *)SvRV (coro_current);
1848 AV *defav = GvAV (PL_defgv);
1849 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1850 AV *invoke_av;
1851 int i, len;
1852 3479
1853 if (!invoke) 3480void
1854 croak ("\3async_pool terminate\2\n"); 3481_pool_handler (...)
3482 CODE:
3483 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1855 3484
1856 SvREFCNT_dec (coro->saved_deffh); 3485void
1857 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3486async_pool (SV *cv, ...)
3487 PROTOTYPE: &@
3488 PPCODE:
3489{
3490 HV *hv = (HV *)av_pop (av_async_pool);
3491 AV *av = newAV ();
3492 SV *cb = ST (0);
3493 int i;
1858 3494
1859 hv_store (hv, "desc", sizeof ("desc") - 1, 3495 av_extend (av, items - 2);
1860 newSVpvn (strpair ("[async_pool]")), 0); 3496 for (i = 1; i < items; ++i)
3497 av_push (av, SvREFCNT_inc_NN (ST (i)));
1861 3498
1862 invoke_av = (AV *)SvRV (invoke); 3499 if ((SV *)hv == &PL_sv_undef)
1863 len = av_len (invoke_av);
1864
1865 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1866
1867 if (len > 0)
1868 { 3500 {
1869 av_fill (defav, len - 1); 3501 PUSHMARK (SP);
1870 for (i = 0; i < len; ++i) 3502 EXTEND (SP, 2);
1871 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3503 PUSHs (sv_Coro);
3504 PUSHs ((SV *)cv_pool_handler);
3505 PUTBACK;
3506 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3507 SPAGAIN;
3508
3509 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1872 } 3510 }
1873 3511
3512 {
3513 struct coro *coro = SvSTATE_hv (hv);
3514
3515 assert (!coro->invoke_cb);
3516 assert (!coro->invoke_av);
3517 coro->invoke_cb = SvREFCNT_inc (cb);
3518 coro->invoke_av = av;
3519 }
3520
3521 api_ready (aTHX_ (SV *)hv);
3522
3523 if (GIMME_V != G_VOID)
3524 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3525 else
1874 SvREFCNT_dec (invoke); 3526 SvREFCNT_dec (hv);
1875} 3527}
1876 3528
1877void 3529SV *
1878_pool_2 (SV *cb) 3530rouse_cb ()
3531 PROTOTYPE:
1879 CODE: 3532 CODE:
1880{ 3533 RETVAL = coro_new_rouse_cb (aTHX);
1881 struct coro *coro = SvSTATE (coro_current);
1882
1883 sv_setsv (cb, &PL_sv_undef);
1884
1885 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1886 coro->saved_deffh = 0;
1887
1888 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1889 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1890 croak ("\3async_pool terminate\2\n");
1891
1892 av_clear (GvAV (PL_defgv));
1893 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1894 newSVpvn (strpair ("[async_pool idle]")), 0);
1895
1896 coro->prio = 0;
1897
1898 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1899 api_trace (coro_current, 0);
1900
1901 av_push (av_async_pool, newSVsv (coro_current));
1902}
1903
1904
1905MODULE = Coro::State PACKAGE = Coro::AIO
1906
1907SV *
1908_get_state ()
1909 CODE:
1910{
1911 struct io_state *data;
1912
1913 RETVAL = newSV (sizeof (struct io_state));
1914 data = (struct io_state *)SvPVX (RETVAL);
1915 SvCUR_set (RETVAL, sizeof (struct io_state));
1916 SvPOK_only (RETVAL);
1917
1918 data->errorno = errno;
1919 data->laststype = PL_laststype;
1920 data->laststatval = PL_laststatval;
1921 data->statcache = PL_statcache;
1922}
1923 OUTPUT: 3534 OUTPUT:
1924 RETVAL 3535 RETVAL
1925 3536
1926void 3537void
1927_set_state (char *data_) 3538rouse_wait (...)
3539 PROTOTYPE: ;$
3540 PPCODE:
3541 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3542
3543void
3544on_enter (SV *block)
3545 ALIAS:
3546 on_leave = 1
1928 PROTOTYPE: $ 3547 PROTOTYPE: &
1929 CODE: 3548 CODE:
1930{ 3549{
1931 struct io_state *data = (void *)data_; 3550 struct coro *coro = SvSTATE_current;
3551 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1932 3552
1933 errno = data->errorno; 3553 block = s_get_cv_croak (block);
1934 PL_laststype = data->laststype;
1935 PL_laststatval = data->laststatval;
1936 PL_statcache = data->statcache;
1937}
1938 3554
3555 if (!*avp)
3556 *avp = newAV ();
3557
3558 av_push (*avp, SvREFCNT_inc (block));
3559
3560 if (!ix)
3561 on_enterleave_call (aTHX_ block);
3562
3563 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3564 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3565 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3566}
3567
3568
3569MODULE = Coro::State PACKAGE = PerlIO::cede
3570
3571BOOT:
3572 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3573
3574
3575MODULE = Coro::State PACKAGE = Coro::Semaphore
3576
3577SV *
3578new (SV *klass, SV *count = 0)
3579 CODE:
3580{
3581 int semcnt = 1;
3582
3583 if (count)
3584 {
3585 SvGETMAGIC (count);
3586
3587 if (SvOK (count))
3588 semcnt = SvIV (count);
3589 }
3590
3591 RETVAL = sv_bless (
3592 coro_waitarray_new (aTHX_ semcnt),
3593 GvSTASH (CvGV (cv))
3594 );
3595}
3596 OUTPUT:
3597 RETVAL
3598
3599# helper for Coro::Channel and others
3600SV *
3601_alloc (int count)
3602 CODE:
3603 RETVAL = coro_waitarray_new (aTHX_ count);
3604 OUTPUT:
3605 RETVAL
3606
3607SV *
3608count (SV *self)
3609 CODE:
3610 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3611 OUTPUT:
3612 RETVAL
3613
3614void
3615up (SV *self, int adjust = 1)
3616 ALIAS:
3617 adjust = 1
3618 CODE:
3619 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3620
3621void
3622down (...)
3623 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3625
3626void
3627wait (...)
3628 CODE:
3629 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3630
3631void
3632try (SV *self)
3633 PPCODE:
3634{
3635 AV *av = (AV *)SvRV (self);
3636 SV *count_sv = AvARRAY (av)[0];
3637 IV count = SvIVX (count_sv);
3638
3639 if (count > 0)
3640 {
3641 --count;
3642 SvIVX (count_sv) = count;
3643 XSRETURN_YES;
3644 }
3645 else
3646 XSRETURN_NO;
3647}
3648
3649void
3650waiters (SV *self)
3651 PPCODE:
3652{
3653 AV *av = (AV *)SvRV (self);
3654 int wcount = AvFILLp (av) + 1 - 1;
3655
3656 if (GIMME_V == G_SCALAR)
3657 XPUSHs (sv_2mortal (newSViv (wcount)));
3658 else
3659 {
3660 int i;
3661 EXTEND (SP, wcount);
3662 for (i = 1; i <= wcount; ++i)
3663 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3664 }
3665}
3666
3667MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3668
3669void
3670_may_delete (SV *sem, int count, int extra_refs)
3671 PPCODE:
3672{
3673 AV *av = (AV *)SvRV (sem);
3674
3675 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3676 && AvFILLp (av) == 0 /* no waiters, just count */
3677 && SvIV (AvARRAY (av)[0]) == count)
3678 XSRETURN_YES;
3679
3680 XSRETURN_NO;
3681}
3682
3683MODULE = Coro::State PACKAGE = Coro::Signal
3684
3685SV *
3686new (SV *klass)
3687 CODE:
3688 RETVAL = sv_bless (
3689 coro_waitarray_new (aTHX_ 0),
3690 GvSTASH (CvGV (cv))
3691 );
3692 OUTPUT:
3693 RETVAL
3694
3695void
3696wait (...)
3697 CODE:
3698 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3699
3700void
3701broadcast (SV *self)
3702 CODE:
3703{
3704 AV *av = (AV *)SvRV (self);
3705 coro_signal_wake (aTHX_ av, AvFILLp (av));
3706}
3707
3708void
3709send (SV *self)
3710 CODE:
3711{
3712 AV *av = (AV *)SvRV (self);
3713
3714 if (AvFILLp (av))
3715 coro_signal_wake (aTHX_ av, 1);
3716 else
3717 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3718}
3719
3720IV
3721awaited (SV *self)
3722 CODE:
3723 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3724 OUTPUT:
3725 RETVAL
3726
3727
3728MODULE = Coro::State PACKAGE = Coro::AnyEvent
3729
3730BOOT:
3731 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3732
3733void
3734_schedule (...)
3735 CODE:
3736{
3737 static int incede;
3738
3739 api_cede_notself (aTHX);
3740
3741 ++incede;
3742 while (coro_nready >= incede && api_cede (aTHX))
3743 ;
3744
3745 sv_setsv (sv_activity, &PL_sv_undef);
3746 if (coro_nready >= incede)
3747 {
3748 PUSHMARK (SP);
3749 PUTBACK;
3750 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3751 }
3752
3753 --incede;
3754}
3755
3756
3757MODULE = Coro::State PACKAGE = Coro::AIO
3758
3759void
3760_register (char *target, char *proto, SV *req)
3761 CODE:
3762{
3763 SV *req_cv = s_get_cv_croak (req);
3764 /* newXSproto doesn't return the CV on 5.8 */
3765 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3766 sv_setpv ((SV *)slf_cv, proto);
3767 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3768}
3769
3770MODULE = Coro::State PACKAGE = Coro::Select
3771
3772void
3773patch_pp_sselect ()
3774 CODE:
3775 if (!coro_old_pp_sselect)
3776 {
3777 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3778 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3779 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3780 }
3781
3782void
3783unpatch_pp_sselect ()
3784 CODE:
3785 if (coro_old_pp_sselect)
3786 {
3787 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3788 coro_old_pp_sselect = 0;
3789 }
3790
3791

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